EP1835142B1 - Valve assembly, in particular for adjusting the flow of a heating/cooling agent in a motor vehicle - Google Patents
Valve assembly, in particular for adjusting the flow of a heating/cooling agent in a motor vehicle Download PDFInfo
- Publication number
- EP1835142B1 EP1835142B1 EP07004175A EP07004175A EP1835142B1 EP 1835142 B1 EP1835142 B1 EP 1835142B1 EP 07004175 A EP07004175 A EP 07004175A EP 07004175 A EP07004175 A EP 07004175A EP 1835142 B1 EP1835142 B1 EP 1835142B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve member
- line
- valve
- connecting position
- arrangement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000002826 coolant Substances 0.000 title claims description 17
- 238000010438 heat treatment Methods 0.000 title claims description 14
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 239000012530 fluid Substances 0.000 description 24
- 238000002485 combustion reaction Methods 0.000 description 10
- 230000001419 dependent effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000006399 behavior Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000012781 shape memory material Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
- F01P7/165—Controlling of coolant flow the coolant being liquid by thermostatic control characterised by systems with two or more loops
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
- F01P2005/105—Using two or more pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P2007/146—Controlling of coolant flow the coolant being liquid using valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2050/00—Applications
- F01P2050/22—Motor-cars
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2060/00—Cooling circuits using auxiliaries
- F01P2060/08—Cabin heater
Definitions
- the present invention relates to a valve arrangement, in particular for adjusting a heating medium / coolant flow in a motor vehicle, comprising a first valve member, which is adjustable in response to a prevailing between a first line and a second line pressure difference between a first connection position and a second connection position , As well as a second valve member which varies depending on the temperature flow through the first valve member, wherein when positioning the first valve member in the second connection position, a flow connection between the first conduit and a third conduit is substantially released and when positioning the first valve member in the first connection position the Flow connection between the first line and the third line is temperature-dependent changed by the second valve member, according to the preamble of claim 1.
- FIG. 1 schematically shows the structure of this known valve assembly or its integration into the heating / cooling system of a vehicle.
- the generally designated 10 valve arrangement is about three in the Fig. 1 only schematically indicated lines 12, 14, 16 in connection with the overall system 18.
- the first line 12 establishes a connection between the valve assembly 10 and the coolant jacket of an internal combustion engine 20.
- the second line 14 establishes a connection between the valve arrangement 10 and a heat exchanger 22, in which heat can be transmitted to the air to be introduced into the vehicle interior.
- the valve assembly 10 is in communication with the heat exchanger portion 24 of a fuel heater to be operated vehicle heater 26.
- this heat exchanger assembly 24 performs another Line 28 away, in the direction of the heat exchanger 22 leading to the second line 14.
- From the heat exchanger 22 performs a line 30 away.
- this line 30 branches into a line 34 which leads via a check valve 36 and a line 37 to the third line 16 and thus also to the heat exchanger portion 24 of the vehicle heater 26, and in a line 38, which leads to the drive unit or the internal combustion engine 20 and the coolant jacket thereof leads.
- the feed pump 40 is associated with the vehicle heater 26 and conveys the incoming fluid from the lines 16 and 37 via the line 28 and the line 14 to the heat exchanger 22.
- the feed pump 42 is associated with the coolant jacket of the internal combustion engine 20 and promotes that via the line 30 and the line 38 incoming fluid into the conduit 12 and thus to the valve assembly 10th
- the valve assembly 10 shown only schematically includes slidably received in a valve housing 44, a first valve member 46. This can be between the in the Fig. 1 with solid line shown first connection position and in Fig. 1 moved with dashed line shown second connection position. This shift takes place under the pressures prevailing at the two end regions of the valve housing 44, ie primarily in the lines 12 and 14, or the pressure difference that arises. If the pressure P1 in the second line 14 is higher than the pressure P2 in the first line 12, then the first valve member 46 moves into the first connecting position shown by a solid line or remains in this connecting position. If the pressure P2 in the first line 12 is higher than the pressure P1 in the second line 14, the first valve member 46 moves in the second connecting position drawn with dashed lines.
- a second valve member 48 is further included in the first valve member 46. This can move in the first valve member 46, between the in Fig. 1 shown by a solid line first bridging position and in Fig. 1 dashed line shown second bridging position.
- the displacement of the second valve member 48 in the first valve member 46 between its two bridging positions is temperature-dependent. This is one in the Fig. 1 not shown thermally active actuator, such as a built-up of shape memory material element, present at a certain switching temperature increasing temperature in the region of the first valve member 46 and the second valve member 48 of this second valve member 48 against the biasing force of a return spring of the solid line first bridging position moves in the shown in dashed line second bridging position. If the temperature drops below the switching temperature again, the second valve member 48 moves back into the first bridging position.
- this system 18 is as follows: If at a first start or cold start first the feed pump 40 is put into operation and also the vehicle heater 26 is activated, then the fluid which absorbs heat in the heat exchanger area 24 is transferred by the conveying action of the feed pump 40 the line 28 delivered. It also passes via the line 14 into the interior of the valve housing 44, so that there on the one hand, a certain pressure P1 is generated, which acts on the first valve member 46 in the direction of its first connection position. On the other hand, the above-mentioned thermally active actuating element, which is responsible for the movement of the second valve member 48, comes into contact with this increasingly warming fluid.
- the temperature is not sufficiently high, that is still below the switching temperature, so that the second valve member 48 is in its first bridging position.
- the funded by the feed pump 40 fluid flows through the heat exchanger 22 and passes through the line 30, the line 34, the check valve 36 and the line 37 back to the feed pump 40 and the heat exchanger area 24. Since in this phase of operation, the feed pump 42 is not operated and thus the pressure P2 generated in the line 12 is below the pressure P1, the first valve member 46 assumes the already mentioned first connection position. In this first connection position, the connection between the first line 12 and the third line 16 is blocked due to the fact that the second valve element 48 is also in its first bridging position shown by a solid line, whereby possibly a certain leakage flow may be present.
- the fluid which is increasingly heated in the heater 26, flows primarily only via the heat exchanger 22 and thus contributes to heating the air to be conducted into the vehicle interior and thus preheating the vehicle interior.
- the fluid After a certain period of time, the fluid reaches a sufficiently high temperature and has sufficiently heated the area of the first valve member or the thermally active element present there, so that the second valve member 48 moves into its position in FIG Fig. 1 will move with a dashed line shown second bridging position.
- the first valve member 46 remains due to the initially still unchanged pressure conditions in its first connection position.
- the flow connection between the first line 12 and the third line 16 is then basically released, so that when the feed pump 42 is still not activated, the coolant jacket of the internal combustion engine 20 is released for flow through.
- a flow connection between the two lines 12 and 14 possibly interrupted except for a leakage flow explained below.
- the still circulating fluid so for example water or other liquid coolant, enter from the line 12 into the valve housing 44 and there will branch into a partial flow, via the line 16 and the deactivated feed pump 40 to the second line 14th enters, as well as in a partial flow, which passes through the addressed leakage path through the first valve member 46 directly to the second line 14.
- FIGS. 7 to 13 shows the DE 103 59 293 A1 in FIGS. 7 to 13 an embodiment in which a pressure-dependent switching third valve member is provided in the interior of the second valve member. If the first valve member in its second connection position, in which in principle therefore a flow connection between the first line and the second line should be present, the third valve member releases the second valve member and thus also the first valve member for flow, so that regardless of the temperature There is an adjusting positioning of the second valve member in the first valve member a through the first valve member or the second valve member and passing the first and the second line connecting flow path.
- a valve arrangement in particular for adjusting a heating medium / coolant flow in a motor vehicle, comprising a first valve member which, depending on a second valve member, the temperature dependent on the flowability of the first valve member changes, wherein positioning of the first valve member in the second connection position, a flow connection between the the first line and a third line is substantially released and when positioning the first valve member in the first connection position, the flow connection between the first line and the third line is temperature-dependent changed by the second valve member; further comprising a bypass flow path which, when the first valve member is positioned in the second connection position, provides a temperature-independent flow connection between the first line and the second line.
- valve arrangement according to the invention, it is therefore ensured that even when the first valve member is in its second connecting position, a leakage flow is made possible, specifically independently of the prevailing temperatures.
- This is with incorporation of such a valve assembly into a system as previously described with reference to FIGS Fig. 1 has been described, of particular importance, since in the phase in which only the internal combustion engine associated feed pump is operated, a flow path can be provided with a relatively small throttling effect.
- valve arrangement further comprises a valve housing displaceably receiving the first valve member between the first connection position and the second connection position, wherein the bypass flow path on the valve housing comprises a channel arrangement which leads past the first valve member when positioned in the second connection position.
- valve housing has a first housing member receiving the first valve member in positioning in the first connection position, the inner dimension substantially corresponds to the outer dimension of the first valve member, and receiving the first valve member when positioned in the second connection position second housing portion, which has a larger inner dimension than the outer dimension of the first valve member to provide the channel arrangement.
- a guide arrangement for guiding the first valve member into and out of the second connection position is provided in the second housing section.
- the guide arrangement comprises a plurality of guide projections provided on the second housing section.
- the channel arrangement can then be formed between these guide projections.
- a biasing arrangement is provided for biasing the first valve member in the first connection position.
- the present invention further relates to a vehicle heating system comprising a valve arrangement according to the invention, wherein the first line establishes a connection between the coolant jacket of a drive unit and a valve housing of the valve arrangement, the second line establishes a connection between the valve housing and a coolant heat exchanger and the third line connects between the valve housing and a heat exchanger area of a vehicle heater manufactures.
- Fig. 2 recognizes the essential for the explanation of the present invention system areas of in Fig. 1 generally designated 18 heating system, namely the valve assembly 10, the heat exchanger portion 24 of the heater 26 and the feed pump 40.
- the others, in Fig. 2 not shown system areas, can be constructed or cooperate with each other, as in Fig. 1 represented and with reference to the Fig. 1 already generally described.
- the valve housing 44 which, as explained below, here two housing sections 50, 52 has. Both housing sections 50, 52 are substantially tube-like, but have the difference that they provide different internal dimensions.
- the first valve member 46 is positioned when it is in its first connection position, this first connection position is substantially predetermined by an annular housing portion 54 provided in the housing portion 50.
- a biasing spring 56 presses the first valve member 56 into abutment therewith Investment area 54.
- the first valve member 46 is substantially formed as a hollow body and has on its first line 12 facing the end face an opening 58. This is basically closed by the second valve member 48.
- a provided in the first valve member 48 biasing spring 60 which is supported on a support member 62 also provided in the first valve member 46, presses the second valve member in its first bridging position, that is the position in which the opening 58 is closed.
- the support element 62 Since the support element 62 is open, the fluid flowing in through the line 28 or the line region 14 provided here for example as part of the second housing section 52 and heated in the heat exchanger region 24 can enter the interior of the first valve element 46 and thus into heat transfer contact with a helical spring-like manner trained temperature-sensitive actuator 64 come. This has due to its shape memory property on a certain switching temperature, the exceeding of which has the consequence that it expands to move the second valve member 48 against the biasing action of the spring 56 in its second bridging position. In this second bridging position, the opening 58 is then released so that through the interior of the first valve member 46 and through one or more provided in the first valve member 46 openings 66 then the fluid from the first conduit 12 into the third conduit 16 and thus to the feed pump 40 can flow.
- the second valve member 48 Since in the second bridging position, the second valve member 48 is axially supported on the support member 62, but no tight completion of the openings provided in the support member 62 is generated, also in this phase, a flow possibility for the supplied via the line 28 fluid is still present. Also, the fluid flowing in via the first conduit 12 can flow through the interior of the first valve member 46 into the conduit 14, which upon activation of the in Fig. 1 recognizable feed pump 42 due to the fact that the pressure P2 will exceed the pressure P1, will also be the case.
- This bypass flow path establishes a connection between the first line 12 and the second line 14 or the line 28.
- This connection via the bypass flow path 68 or the channel arrangement 70 is always given when positioning the first valve member 46 in its second connecting position, regardless of whether the second valve member 48 is in its first bridging position, as in FIG Fig. 3 is shown, or in its second bridging position, so through the interior of the first Ventilorgangs 46 through an additional flow path is created.
- valve arrangement 44 with the bypass flow path 68 has the result that when the feed pump 42 is in operation and the pressure P2 exceeds the pressure P1, a significantly larger proportion of the pumped fluid via the second line 14 to the heat exchanger 22 passes and not via the feed pump 40 and the heat exchanger region 24th flows into the conduit 28. This is especially advantageous in those operating phases in which the setpoint operating temperature is reached and the feed pump 40 is no longer operated.
- additional flow path namely on the channel assembly 70, created so that a much more efficient flow through the entire system is obtained.
- This bypass flow path 68 may, as in the Fig. 2 and 3 recognizable, be provided by the fact that the valve housing 44 is formed widening. While the first housing portion 50 is dimensioned so that it can absorb and guide the first valve member 46, but with the least possible loss of leakage, the second housing portion 52 adjoining, for example, in a stepped expansion area is larger, so that the bypass flow path 68 at the outside of the first valve member 46 passes. Nevertheless, in order to be able to move the first valve member 46 back and forth between its two connecting positions without the risk of jamming, a guide arrangement in the form of a plurality of rib-like projections 72 is provided in the second housing section 52.
- These rib-like projections 72 extend approximately in the longitudinal direction, ie also displacement direction of the first valve member 46 and form with their inwardly directed surface regions a guide structure which connects substantially flush and steplessly to the inner surface in the first housing portion 50.
- a guide structure which connects substantially flush and steplessly to the inner surface in the first housing portion 50.
- four such rib-like projections that not only ensure the defined guidance of the first valve member 46, but also define channels of the channel arrangement 70 between them.
- a further support member 74 may be held between these projections 72, which provides an abutment for the biasing spring 56.
- valve assembly 10 is basically superfluous, but because of the not very significant additional production costs whose presence can be accepted, especially because it provides the opportunity, subsequently by appropriate switching the line connections also to ensure the more extensive functionality.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air-Conditioning For Vehicles (AREA)
- Multiple-Way Valves (AREA)
- Sliding Valves (AREA)
- Motor Or Generator Cooling System (AREA)
Description
Die vorliegende Erfindung betrifft eine Ventilanordnung, insbesondere zur Einstellung einer Heizmittel/Kühlmittel-Strömung in einem Kraftfahrzeug, umfassend ein erstes Ventilorgan, das in Abhängigkeit von einer zwischen einer ersten Leitung und einer zweiten Leitung vorherrschenden Druckdifferenz zwischen einer ersten Verbindungsstellung und einer zweiten Verbindungsstellung verstellbar ist, sowie ein zweites Ventilorgan, das temperaturabhängig die Durchströmbarkeit des ersten Ventilorgans verändert, wobei bei Positionierung des ersten Ventilorgans in der zweiten Verbindungsstellung eine Strömungsverbindung zwischen der ersten Leitung und einer dritten Leitung im Wesentlichen freigegeben ist und bei Positionierung des ersten Ventilorgans in der ersten Verbindungsstellung die Strömungsverbindung zwischen der ersten Leitung und der dritten Leitung temperaturabhängig vom zweiten Ventilorgan veränderbar ist, gemäß dem Oberbegriff des Anspruchs 1.The present invention relates to a valve arrangement, in particular for adjusting a heating medium / coolant flow in a motor vehicle, comprising a first valve member, which is adjustable in response to a prevailing between a first line and a second line pressure difference between a first connection position and a second connection position , As well as a second valve member which varies depending on the temperature flow through the first valve member, wherein when positioning the first valve member in the second connection position, a flow connection between the first conduit and a third conduit is substantially released and when positioning the first valve member in the first connection position the Flow connection between the first line and the third line is temperature-dependent changed by the second valve member, according to the preamble of claim 1.
Eine derartige Ventilanordnung ist aus der
Um die Fluidströmung zu erzeugen bzw. aufrecht zu erhalten, sind zwei Förderpumpen 40, 42 vorgesehen. Die Förderpumpe 40 ist dem Fahrzeugheizgerät 26 zugeordnet und fördert das von den Leitungen 16 bzw. 37 heranströmende Fluid über die Leitung 28 und die Leitung 14 zum Wärmetauscher 22. Die Förderpumpe 42 ist dem Kühlmittelmantel der Brennkraftmaschine 20 zugeordnet und fördert das über die Leitung 30 und die Leitung 38 heranströmende Fluid in die Leitung 12 und somit zu der Ventilanordnung 10.In order to create or maintain the fluid flow, two
Die nur schematisch dargestellte Ventilanordnung 10 umfasst in einem Ventilgehäuse 44 verschiebbar aufgenommen ein erstes Ventilorgan 46. Dieses kann zwischen der in der
Im ersten Ventilorgan 46 ist weiter ein zweites Ventilorgan 48 aufgenommen. Dieses kann sich im ersten Ventilorgan 46 verschieben, und zwar zwischen der in
Der Betrieb dieses Systems 18 ist wie folgt: Wird bei einem Erststart bzw. Kaltstart zunächst die Förderpumpe 40 in Betrieb gesetzt und dabei auch das Fahrzeugheizgerät 26 aktiviert, so wird durch die Förderwirkung der Förderpumpe 40 das Fluid, das Wärme im Wärmetauscherbereich 24 aufnimmt, über die Leitung 28 abgegeben. Dabei gelangt es auch über die Leitung 14 in das Innere des Ventilgehäuses 44, so dass dort einerseits ein bestimmter Druck P1 erzeugt wird, der das erste Ventilorgan 46 in Richtung seiner ersten Verbindungsstellung beaufschlagt. Andererseits kommt das vorangehend angesprochene thermisch aktive Stellelement, welches für die Bewegung des zweiten Ventilorgans 48 verantwortlich ist, in Kontakt mit diesem zunehmend wärmer werdenden Fluid. Zunächst ist jedoch die Temperatur noch nicht ausreichend hoch, also noch unter der Schalttemperatur, so dass das zweite Ventilorgan 48 in seiner ersten Überbrückungsstellung ist. Das von der Förderpumpe 40 geförderte Fluid durchströmt den Wärmetauscher 22 und gelangt über die Leitung 30, die Leitung 34, das Rückschlagventil 36 und die Leitung 37 wieder zurück zur Förderpumpe 40 bzw. zum Wärmetauscherbereich 24. Da in dieser Betriebsphase die Förderpumpe 42 nicht betrieben wird und somit der in der Leitung 12 generierte Druck P2 unter dem Druck P1 liegt, nimmt das erste Ventilorgan 46 die bereits angesprochene erste Verbindungsstellung ein. In dieser ersten Verbindungsstellung ist auf Grund der Tatsache, dass auch das zweite Ventilorgan 48 in seiner mit durchgezogener Linie dargestellten ersten Überbrückungsstellung ist, die Verbindung zwischen der ersten Leitung 12 und der dritten Leitung 16 blockiert, wobei ggf. eine gewisse Leckageströmung vorhanden sein kann. Dies bedeutet, dass das im Heizgerät 26 zunehmend erwärmte Fluid primär nur über den Wärmetauscher 22 strömt und somit dazu beiträgt, die in den Fahrzeuginnenraum zu leitende Luft zu erwärmen und somit den Fahrzeuginnenraum vorzuwärmen.The operation of this
Nach einer bestimmten Zeitdauer erreicht das Fluid eine ausreichend hohe Temperatur und hat den Bereich des ersten Ventilorgans bzw. das dort vorhandene thermisch aktive Element ausreichend erwärmt, so dass dieses das zweite Ventilorgan 48 in seine in
Beispielsweise mit Inbetriebnahme der Brennkraftmaschine 20 wird dann auch die Förderpumpe 42 in Betrieb gesetzt, die nunmehr zusätzlich zur Förderwirkung der Förderpumpe 40 dafür sorgt, dass verstärkt aus der Leitung 30 heranströmendes Fluid über die Leitung 38 in den Kühlmittelmantel eintritt und über die erste Leitung 12 dann wieder zur Ventilanordnung 10 geleitet wird. Hier sind die Förderkapazitäten dieser beiden Förderpumpen 40, 42 so aufeinander abgestimmt, dass der dann über die Leitung 12 erzeugte Druck P2 den über die Leitung 14 erzeugten Druck P1 überwiegt und somit das erste Ventilorgan 46 sich zusammen mit dem zweiten Ventilorgan 48 in die in
Um diesem Problem entgegenzutreten, zeigt die
Ausgehend von einem derartigen bekannten System ist es die Aufgabe der vorliegenden Erfindung, eine Ventilanordnung, insbesondere zur Einstellung der Heizmittel/Kühlmittel-Strömung in einem Kraftfahrzeug bereitzustellen, mit welcher vereinfacht eine besser an verschiedene Betriebszustände des Heiz/KühlSystems angepasste Funktionalität erlangt werden kann.Starting from such a known system, it is the object of the present invention to provide a valve arrangement, in particular for adjusting the heating medium / coolant flow in a motor vehicle, with which simplified a better adapted to different operating conditions of the heating / cooling system functionality can be obtained.
Erfindungsgemäß wird diese Aufgabe gelöst durch eine Ventilanordnung, insbesondere zur Einstellung einer Heizmittel/Kühlmittel-Strömung in einem Kraftfahrzeug, umfassend ein erstes Ventilorgan, das in Abhängigkeit von einer zwischen einer ersten Leitung und einer zweiten Leitung vorherrschenden Druckdifferenz zwischen einer ersten Verbindungsstellung und einer zweiten Verbindungsstellung verstellbar ist, sowie ein zweites Ventilorgan, das temperaturabhängig die Durchströmbarkeit des ersten Ventilorgans verändert, wobei bei Positionierung des ersten Ventilorgans in der zweiten Verbindungsstellung eine Strömungsverbindung zwischen der ersten Leitung und einer dritten Leitung im Wesentlichen freigegeben ist und bei Positionierung des ersten Ventilorgans in der ersten Verbindungsstellung die Strömungsverbindung zwischen der ersten Leitung und der dritten Leitung temperaturabhängig vom zweiten Ventilorgan veränderbar ist; ferner umfassend einen Bypass-Strömungsweg, welcher bei Positionierung des ersten Ventilorgans in der zweiten Verbindungsstellung temperaturunabhängig eine Strömungsverbindung zwischen der ersten Leitung und der zweiten Leitung bereitstellt.According to the invention, this object is achieved by a valve arrangement, in particular for adjusting a heating medium / coolant flow in a motor vehicle, comprising a first valve member which, depending on a second valve member, the temperature dependent on the flowability of the first valve member changes, wherein positioning of the first valve member in the second connection position, a flow connection between the the first line and a third line is substantially released and when positioning the first valve member in the first connection position, the flow connection between the first line and the third line is temperature-dependent changed by the second valve member; further comprising a bypass flow path which, when the first valve member is positioned in the second connection position, provides a temperature-independent flow connection between the first line and the second line.
Bei der erfindungsgemäßen Ventilanordnung ist also dafür gesorgt, dass auch dann, wenn das erste Ventilorgan in seiner zweiten Verbindungsstellung ist, eine Leckageströmung ermöglicht ist, und zwar primär unabhängig von den vorherrschenden Temperaturen. Dies ist bei Eingliederung einer derartigen Ventilanordnung in ein System, wie es vorangehend mit Bezug auf die
Zu diesem zweck weist, die erfindungsgemäße Ventilanordnung ferner ein das erste Ventilorgan zwischen der ersten Verbindungsstellung und der zweiten Verbindungsstellung verschiebbar aufnehmendes Ventilgehäuse auf, wobei der Bypass-Strömungsweg an dem Ventilgehäuse eine an dem ersten Ventilorgan bei Positionierung in der zweiten Verbindungsstellung vorbeiführende Kanalanordnung umfasst.For this purpose, the valve arrangement according to the invention further comprises a valve housing displaceably receiving the first valve member between the first connection position and the second connection position, wherein the bypass flow path on the valve housing comprises a channel arrangement which leads past the first valve member when positioned in the second connection position.
Diese Kanalanordnung kann in besonders einfacher, gleichwohl sehr effizient die gewünschte Umströmbarkeit bereitstellender Weise dadurch erlangt werden, dass das Ventilgehäuse einen das erste Ventilorgan bei Positionierung in der ersten Verbindungsstellung aufnehmenden ersten Gehäuseabschnitt aufweist, dessen Innenabmessung im Wesentlichen der Außenabmessung des ersten Ventilorgans entspricht, und einen das erste Ventilorgan bei Positionierung in der zweiten Verbindungsstellung aufnehmenden zweiten Gehäuseabschnitt aufweist, der zur Bereitstellung der Kanalanordnung eine größere Innenabmessung als die Außenabmessung des ersten Ventilorgans aufweist.This channel arrangement can be particularly simple, but very efficient the desired flowability providing manner be obtained in that the valve housing has a first housing member receiving the first valve member in positioning in the first connection position, the inner dimension substantially corresponds to the outer dimension of the first valve member, and receiving the first valve member when positioned in the second connection position second housing portion, which has a larger inner dimension than the outer dimension of the first valve member to provide the channel arrangement.
Die Bewegung des ersten Ventilorgans zwischen seinen verschiedenen Verbindungsstellungen muss auch dann sichergestellt werden, wenn die dieses Ventilorgan aufnehmenden Gehäuseabschnitte verschiedene Innenabmessungen aufweisen. Es wird daher vorgeschlagen, dass im zweiten Gehäuseabschnitt eine Führungsanordnung zur Führung des ersten Ventilorgans in die und aus der zweiten Verbindungsstellung vorgesehen ist. Dies kann in einfacher Weise dadurch realisiert werden, dass die Führungsanordnung eine Mehrzahl von am zweiten Gehäuseabschnitt vorgesehenen Führungsvorsprüngen umfasst. Zwischen diesen Führungsvorsprüngen kann dann die Kanalanordnung gebildet sein.The movement of the first valve member between its various connection positions must also be ensured if the housing sections receiving this valve element have different internal dimensions. It is therefore proposed that a guide arrangement for guiding the first valve member into and out of the second connection position is provided in the second housing section. This can be realized in a simple manner in that the guide arrangement comprises a plurality of guide projections provided on the second housing section. The channel arrangement can then be formed between these guide projections.
Um das erste Ventilorgan insbesondere für die Startphase in einer definierten Positionierung bereitzustellen, wird vorgeschlagen, dass eine Vorspannanordnung vorgesehen ist zum Vorspannen des ersten Ventilorgans in die erste Verbindungsstellung.In order to provide the first valve member, in particular for the starting phase in a defined positioning, it is proposed that a biasing arrangement is provided for biasing the first valve member in the first connection position.
Die vorliegende Erfindung betrifft ferner ein Fahrzeugheizsystem, das eine erfindungsgemäße Ventilanordnung umfasst, wobei die erste Leitung eine Verbindung zwischen dem Kühlmittelmantel eines Antriebsaggregats und einem Ventilgehäuse der Ventilanordnung herstellt, die zweite Leitung eine Verbindung zwischen dem Ventilgehäuse und einem Kühlmittelwärmetauscher herstellt und die dritte Leitung eine Verbindung zwischen dem Ventilgehäuse und einem Wärmetauscherbereich eines Fahrzeugheizgerätes herstellt.The present invention further relates to a vehicle heating system comprising a valve arrangement according to the invention, wherein the first line establishes a connection between the coolant jacket of a drive unit and a valve housing of the valve arrangement, the second line establishes a connection between the valve housing and a coolant heat exchanger and the third line connects between the valve housing and a heat exchanger area of a vehicle heater manufactures.
Die Erfindung wird nachfolgend mit Bezug auf die beiliegenden Zeichnungen detailliert beschrieben. Es zeigt:
- Fig. 1
- eine prinzipielle Darstellung eines Fahrzeugheizsystems gemäß dem Stand der Technik;
- Fig. 2
- eine gemäß den Prinzipien der vorliegenden Erfindung aufgebaute Ventilanordnung;
- Fig. 3
- die in
Fig. 2 dargestellte Ventilanordnung in einem anderen Betriebszustand.
- Fig. 1
- a schematic representation of a vehicle heating system according to the prior art;
- Fig. 2
- a valve assembly constructed in accordance with the principles of the present invention;
- Fig. 3
- in the
Fig. 2 shown valve assembly in another operating condition.
In
Man erkennt bei der Ventilanordnung 10 das Ventilgehäuse 44, das, wie nachfolgend noch erläutert, hier zwei Gehäuseabschnitte 50, 52 aufweist. Beide Gehäuseabschnitte 50, 52 sind im Wesentlichen rohrartig ausgebildet, weisen jedoch den Unterschied auf, dass sie unterschiedliche Innenabmessungen bereitstellen. In dem Gehäuseabschnitt 50 ist das erste Ventilorgan 46 positioniert, wenn es in seiner ersten Verbindungsstellung ist, wobei diese erste Verbindungsstellung im Wesentlichen vorgegeben ist durch einen im Gehäuseabschnitt 50 vorgesehenen, ringartigen Anlagebereich 54. Eine Vorspannfeder 56 presst das erste Ventilorgan 56 in Anlage an diesem Anlagebereich 54.It can be seen in the valve assembly 10, the
Man erkennt in
Es wird hier darauf hingewiesen, dass der vorangehend mit Bezug auf die
Bei Aktivierung dieser Förderpumpe 40 wird sich dann, wie vorangehend bereits beschrieben, das erste Ventilorgan 46 im Ventilgehäuse 44 verschieben, und zwar in seine in
Die Ausgestaltung der Ventilanordnung 44 mit dem Bypass-Strömungsweg 68 hat zur Folge, dass dann, wenn die Förderpumpe 42 in Betrieb ist und der Druck P2 den Druck P1 übersteigt, ein deutlich größerer Anteil des geförderten Fluids über die zweite Leitung 14 zum Wärmetauscher 22 gelangt und nicht über die Förderpumpe 40 und den Wärmetauscherbereich 24 in die Leitung 28 strömt. Dies ist vor allen in derjenigen Betriebsphase von Vorteil, in welcher die Sollbetriebstemperatur erreicht ist und die Förderpumpe 40 nicht weiter betrieben wird. Neben der dann nur durch die Förderwirkung der Förderpumpe 42 erzwungenen Durchströmung der Förderpumpe 40 ist ein mit vergleichsweise geringem Strömungswiderstand behafteter zusätzlicher Strömungsweg, nämlich über die Kanalanordnung 70, geschaffen, so dass eine wesentlich effizientere Durchströmung des Gesamtsystems erlangt wird.The embodiment of the
Dieser Bypass-Strömungsweg 68 kann, wie in den
Es sei darauf hingewiesen, dass bei dem vorangehend beschriebenen System bzw. Aufbau verschiedene Modifikationen möglich sind. So kann auf das Vorsehen der Vorspannfeder 56 verzichtet werden, deren primäre Funktion ist, ein durch ihre Vorspannkraft definiertes Umschaltverhalten auch unter Berücksichtigung der beiden Drücke P1 und P2 zu erlangen. Allein durch die aufeinander abgestimmte Erregung der beiden Pumpen 40 und 42 ist es jedoch auch möglich, die Drücke P1 und P2 so einzustellen, dass abhängig von der jeweils vorherrschenden Druckdifferenz das Ventilorgan 46 sich in den in
Weiter sei darauf hingewiesen, dass das vorangehend beschriebene und in
Claims (7)
- A valve arrangement, in particular for adjusting a flow of heating agent/cooling agent in a vehicle, comprising a first valve member (46) switchable between a first connecting position and a second connecting position depending on the pressure difference between a first line (12) and a second line (14), as well as a second valve member (48) modifying flow through the first valve member (46) depending on temperature, wherein during positioning of said first valve member (46) in the second connecting position a flow connection between said first line (12) and a third line (16) is substantially released and during positioning of said first valve member (46) in said first connecting position said flow connection between said first line (12) and said third line (16) is modifiable by said second valve member (48) depending on temperature, further comprising a bypass flow path (68) providing a flow way between said first line (12) and said second line (14) during positioning of said first valve member (46) in said second connecting position depending on temperature, as well as a valve housing (44) moveably receiving said first valve member (46) between said first connecting position and said second connecting position,
characterized in that at said valve housing (44) said bypass flow way (68) comprises a channel arrangement (70) passing by said first valve member (46) during positioning in said second connecting position. - Valve arrangement according to claim 1,
characterized in said valve housing (44) comprising a first housing section (50) receiving said first valve member (46) during positioning in said first connecting position, whose inner dimension substantially corresponds to said outer dimension of said first valve member (46), and comprising a second housing section (52) receiving said first valve member (46) during positioning in said second connecting position, having larger inner dimensions than the outer dimensions of said first valve member (46) for providing said channel arrangement (70). - Valve arrangement according to claim 2,
characterized in a guiding arrangement (72) for guiding said first valve member (46) into and out of said second connecting position being provided inside said second housing section (52). - Valve arrangement according to claim 3,
characterized in said guiding arrangement (72) comprising a plurality of guiding protrusions (72) provided at said second housing section (52). - Valve arrangement according to claim 4,
characterized in said channel arrangement (70) being formed between said guiding protrusions (72). - Valve arrangement according to one of claims 1 to 5,
characterized in a biasing arrangement (56) being provided for biasing said first valve member (46) towards said first connecting position. - Vehicle heating system, comprising a valve arrangement (10) according to one of the preceding claims,
said first line (12) providing a connection between the cooling agent jacket of a drive unit (20) and a valve housing (44) of said valve arrangement (10), said second line (14) providing a connection between said valve housing (44) and a cooling agent heat exchanger (22) and said third line (16) providing a connection between said valve housing (44) and a heat exchanger section (24) of a vehicle heating device (26).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL07004175T PL1835142T3 (en) | 2006-03-16 | 2007-02-28 | Valve assembly, in particular for adjusting the flow of a heating/cooling agent in a motor vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006012212A DE102006012212A1 (en) | 2006-03-16 | 2006-03-16 | Valve arrangement, in particular for adjusting a heating medium / coolant flow in a motor vehicle |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1835142A2 EP1835142A2 (en) | 2007-09-19 |
EP1835142A3 EP1835142A3 (en) | 2008-06-25 |
EP1835142B1 true EP1835142B1 (en) | 2012-09-12 |
Family
ID=38179512
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07004175A Active EP1835142B1 (en) | 2006-03-16 | 2007-02-28 | Valve assembly, in particular for adjusting the flow of a heating/cooling agent in a motor vehicle |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1835142B1 (en) |
DE (1) | DE102006012212A1 (en) |
PL (1) | PL1835142T3 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012220789B4 (en) | 2012-11-14 | 2021-06-24 | Eberspächer Climate Control Systems GmbH | Heat exchanger arrangement, in particular for a vehicle heater |
DE102013225098B4 (en) | 2013-12-06 | 2021-08-12 | Eberspächer Climate Control Systems GmbH | Vehicle heating system |
DE102014203085A1 (en) | 2014-02-20 | 2015-08-20 | Eberspächer Climate Control Systems GmbH & Co. KG | Valve arrangement, in particular for setting a heat transfer medium flow in the heat transfer medium circuit of a vehicle |
CN106870098A (en) * | 2017-03-29 | 2017-06-20 | 安徽江淮汽车集团股份有限公司 | A kind of engine-cooling system |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR869652A (en) * | 1939-03-18 | 1942-02-11 | Bmw Flugmotorenbau Gmbh | Lubrication device for aircraft engines |
US2813545A (en) * | 1955-06-17 | 1957-11-19 | Galland Henning Mfg Company | Inline control valve |
ATE4340T1 (en) * | 1979-09-28 | 1983-08-15 | Caterpillar Tractor Co. | FLUID FOLLOWING CIRCULATOR. |
DE3824412C1 (en) * | 1988-07-19 | 1989-08-24 | Mtu Friedrichshafen Gmbh | |
DE3843827A1 (en) * | 1988-12-24 | 1990-07-05 | Kloeckner Humboldt Deutz Ag | INTERNAL COMBUSTION ENGINE WITH TWO HYDRAULIC LIQUID CIRCUITS |
EP0708716A1 (en) * | 1993-07-21 | 1996-05-01 | Firma J. Eberspächer | Dual-circuit vehicle heater |
DE10128634B4 (en) * | 2001-06-13 | 2004-08-05 | Itw Henschel Gmbh | thermostatic valve |
CA2429321A1 (en) * | 2002-05-22 | 2003-11-22 | Tesma International Inc. | Linear proportional valve |
DE10359293B4 (en) * | 2003-12-17 | 2006-02-09 | J. Eberspächer GmbH & Co. KG | Valve arrangement, in particular for adjusting the Heizmittel- / coolant flow in a motor vehicle |
-
2006
- 2006-03-16 DE DE102006012212A patent/DE102006012212A1/en not_active Withdrawn
-
2007
- 2007-02-28 EP EP07004175A patent/EP1835142B1/en active Active
- 2007-02-28 PL PL07004175T patent/PL1835142T3/en unknown
Also Published As
Publication number | Publication date |
---|---|
EP1835142A2 (en) | 2007-09-19 |
PL1835142T3 (en) | 2013-03-29 |
DE102006012212A1 (en) | 2007-09-20 |
EP1835142A3 (en) | 2008-06-25 |
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