DE102019219545A1 - Ventilation device, in particular an air conditioning device, expediently an HVAC air conditioning device, for a road vehicle, preferably for an electrically driven road vehicle and pinion shaft for such a ventilation device - Google Patents

Abstract

The present invention relates to a ventilation device (1,200) with a fluid channel system (2), with a slide arrangement (12,204) for providing mixed fluid (11) from cold fluid (5) and / or hot fluid (8), the slide arrangement (12,204) has a slide (13,202a, 202b) which can be actuated back and forth between a hot position (15), a cold position (16) and at least one intermediate position (17) as part of a slide movement (14) is, the slide arrangement (12,204) having a pinion shaft (18,215) arranged in contact with the slide (13,202a, 202b) in a circumferential direction (19,225) around its longitudinal axis (20,229) for actuating the slide (13,202a, 202b) in the Frame of the slide movement (14) and wherein the ventilation device (1,200) has a rod extension (57) which is arranged on the pinion shaft (18,215) in order to extend the pinion shaft (18,2115) in the direction of the longitudinal axis (20,229).

Description

The invention relates to a ventilation device, in particular an air conditioning device, expediently an HVAC air conditioning device, for a road vehicle, preferably for an electrically drivable road vehicle, according to claim 1. The invention also relates to a pinion shaft for such a ventilation device.

A ventilation device or an air conditioning device, also known in specialist circles by the acronym HVAC air conditioning device or HVAC air conditioning or HVAC air conditioning system, is preferably used for ventilating or air conditioning a motor vehicle interior of a road vehicle. The abbreviation “HVAC”, which is common among experts, denotes a “Heating-Ventilating and Air Conditioning Device” in German, for example a “Heating, Ventilation and Air Conditioning Device”, ie a device for conditioning room air, for example. In this context, the term “conditioning” means that the temperature, humidity, purity and the composition of room air, for example, can be controlled or regulated.

The known ventilation devices regularly have a fluid channel system which has a cold channel for guiding a cold fluid stream from cold fluid, a hot channel for guiding a hot fluid stream from hot fluid and a mixing channel for guiding mixed fluid. The cold fluid is tempered relatively cold in comparison with the hot fluid. In order to meet the temperature requirements of the user, provision is usually made for the mixed fluid to be provided by mixing the cold fluid flow with the hot fluid flow in accordance with user specifications. So-called slides are regularly used for mixing, which allow the volume proportion of the cold fluid flow from the cold runner and the volume proportion of the hot fluid flow from the hot runner to be set in the mixed fluid volume provided. As a result, a mixed fluid at a relatively hot or cold temperature can optionally be provided, which is introduced into a motor vehicle interior of a road motor vehicle, for example, via ventilation openings. The slide is preferably actuated by a drivable pinion shaft rotatably mounted in a housing of the ventilation device; for example, it is customary to provide a controllable actuator on the housing, which is drivingly coupled to the pinion shaft. As is common in the automotive sector, there is also a need for lightweight and space-optimized design solutions in the area of ventilation devices. So it is now also desirable in the area of pinion shafts to be able to provide structurally optimized solutions, with particular attention being paid to optimizing the weight of the pinion shaft.

Based on this problem, the object of the invention is to provide an improved or at least a different embodiment for a ventilation device.

In the present invention, this object is achieved in particular by the subjects of the independent claims. Advantageous embodiments are the subject of the dependent claims and the description.

The basic idea of the invention is to provide an optimized pinion shaft for a ventilation device. For this purpose, a ventilation device, in particular an air conditioning device, expediently an HVAC air conditioning device, is provided for a road vehicle, preferably for an electrically drivable road vehicle, with a fluid duct system. The fluid channel system has at least one cold channel for guiding a cold fluid stream from cold fluid, for example air, at least one hot channel for guiding a hot fluid stream from hot fluid, for example air, and at least one mixing channel for guiding a mixed fluid stream from mixed fluid. The mixed fluid, for example air, is made up of cold fluid and / or hot fluid. The ventilation device also has a slide arrangement for providing mixed fluid from cold fluid and / or hot fluid, which comprises a slide which can be actuated back and forth between a hot position, a cold position and at least one intermediate position as part of a slide movement. The slide arrangement further comprises a pinion shaft which can be driven in rotation around its axial longitudinal axis and is expediently arranged in contact with the slide and serves to actuate the slide as part of the slide movement. For example, the pinion shaft can be driven in rotation by means of an actuator. The ventilation device now also has a rod extension which is arranged on the pinion shaft in order to expand or lengthen it in the direction of the longitudinal axis. The rod extension can thus serve, for example, as a rotary actuator for the pinion shaft or be used in the context of a pinion shaft assembly for handling the pinion shaft. This offers the advantage that the pinion shaft can be actuated relatively easily or can be moved relatively easily within the framework of an assembly, for example manually by hand or automatically by means of automation devices.

The pinion shaft can expediently have a shaft body, a mounting surface on which the rod extension is arranged being formed on at least one free shaft end of the shaft body.

Further expediently, the rod extension can define an axial rod extension longitudinal axis along its main extent, the rod extension longitudinal axis and the longitudinal axis of the pinion shaft being aligned coaxially with one another. An angled arrangement of the rod extension on the pinion shaft is conceivable, but it has been shown that the coaxial arrangement enables much better handling.

In order to remove the rod extension relatively easily and without additional tools from the pinion shaft, for example after the assembly of the pinion shaft, at least one predetermined breaking section can be formed between the rod extension and the pinion shaft, which enables the rod extension to be removed from the pinion shaft as desired.

In particular, the predetermined breaking section can be implemented as a cross-sectional taper. In this case, at least one single predetermined breaking cross section of the predetermined breaking section is designed to be small in terms of area in relation to each rod extension cross section of the rod extension and in relation to every pinion shaft cross section of the pinion shaft.

Furthermore, in particular, the predetermined breaking section can be implemented as a material weakening section, the material properties of the predetermined breaking section being implemented to promote the breaking of the target relative to the material properties of the areas on the pinion shaft and the rod extension that directly surround the predetermined breaking section. In this context, the predetermined breaking point is conducive to the fact that the mechanical material properties in particular are comparatively poor in the predetermined breaking section or that the mechanical resistance is expediently weaker than in the areas of the pinion shaft and the rod extension surrounding the predetermined breaking section.

The rod extension can expediently be arranged on the pinion shaft with a material fit and / or a force fit and / or a form fit. This ensures that the rod extension is always firmly fixed to the pinion shaft, in particular also in the event of loads during assembly, and is not unintentionally detached from the pinion shaft.

It is also expedient for the rod extension and the pinion shaft to be embodied in one piece, that is to say integrally. For example, an injection molding process lends itself to this, within the framework of which a one-piece rod extension and pinion shaft component can be manufactured at low cost.

The rod extension can have a hollow-cylindrical or cylindrical base body. The base body can have circular, annular, oval, oval-ring or polygonal basic cross-sectional areas of constant area at any point along its longitudinal axis of the rod extension. In principle, one can also imagine that the basic cross-sectional areas change along the longitudinal axis of the rod extension, for example the basic cross-sectional areas can become smaller in area with increasing distance from the pinion shaft if the rod extension is arranged on the pinion shaft, so that a cone-like cone that tapers towards the outside Base body is formed.

Furthermore, functional elements, preferably tooth flanks or the like, which are spaced apart from one another in the circumferential direction around the pinion shaft, can be arranged on an outer circumferential surface of the rod extension. In particular, a tool can engage the rotating functional elements in a touching manner. One can also imagine that an actuator is arranged on the functional elements in order to operate the pinion shaft.

A further basic idea of the invention, which can be implemented in addition or optionally to the above idea, can be to prevent noise development on or through the slide and / or on or through the pinion shaft during operation of the ventilation device by means of one on the slide or in the To counteract the area of the slide and / or the locking device arranged on the pinion shaft, an acoustic locking device so to speak. As a result, practically no acoustic noise is generated when the ventilation device is in operation.

For this purpose, a ventilation device, in particular an air conditioning device, expediently an HVAC air conditioning device, is provided for a road motor vehicle, preferably for an electrically drivable road motor vehicle, with a fluid duct system. The fluid channel system has at least one cold channel for guiding a cold fluid stream from cold fluid, for example air, at least one hot channel for guiding a hot fluid stream from hot fluid, for example air, and at least one mixing channel for guiding a mixed fluid stream from mixed fluid. The mixed fluid, for example air, is made up of cold fluid and / or hot fluid. The ventilation device also has a slide arrangement for providing mixed fluid from cold fluid and / or hot fluid, which comprises a slide which can be actuated back and forth between a hot position, a cold position and at least one intermediate position as part of a slide movement. The slide arrangement further comprises a device which can be driven in rotation around its axial longitudinal axis and is expediently in contact with the slide arranged pinion shaft, which is used to actuate the slide as part of the slide movement. For example, the pinion shaft can be driven in rotation by means of an actuator. The ventilation device also has a blocking device which is sandwiched between the slide and the pinion shaft and defines a sealing gap between the slide and the pinion shaft, which blocks a bypass fluid flow of mixed fluid and / or of cold fluid and / or of hot fluid in order to Operation of the ventilation device to avoid or reduce acoustic noise generated by the bypass fluid flow on the slide or on the pinion shaft. This offers the advantage that ventilation devices can be operated with relatively little noise, which is particularly interesting in the case of electrically operated road vehicles, because there are no other noise sources that act acoustically, such as an internal combustion engine.

The locking device can expediently have one or more locking ribs which are arranged in contact with the slide or formed integrally on the slide, that is to say designed in one piece with the slide. A sealing gap is formed between a free rib edge of the locking rib and the pinion shaft, in particular between a circular cylindrical shaft body of the pinion shaft. A relatively inexpensive way of realizing a locking device is described by means of locking ribs. As a result, a blocking device can be implemented on a ventilation device with an economically justifiable expense.

The locking device can preferably have only one or more counter-locking ribs which are arranged in contact with the pinion shaft or formed integrally on the pinion shaft, that is to say made in one piece with the pinion shaft. In this case, a sealing gap is formed between a free counter-rib edge of the counter-locking rib and the slide, in particular a flat slide body of the slide.

In particular, the locking device can have one or more locking ribs and one or more counter-locking ribs. Each locking rib can be arranged on the slide in a contacting manner or formed integrally on the slide, that is to say made in one piece with the slide. Each counter-locking rib can for its part be arranged in a contacting manner on the pinion shaft or integrally formed on the pinion shaft, that is to say made in one piece with the pinion shaft. A sealing gap is expediently formed between a single locking rib and a single opposing locking rib, expediently between a free rib edge of the respective locking rib and a free opposing rib edge of the respective opposing locking rib.

It is useful if the blocking device of the ventilation device is equipped with sealing means in order to cover the sealing gap formed so that a bypass fluid flow can practically be completely prevented. This has the advantage that no interfering noises can arise. The sealing means can expediently be arranged on the locking rib, in particular on its free rib edge, or on the counter-locking rib, again in particular on its free counter-rib edge, in order to expediently seal the sealing gap in a fluid-tight manner.

The sealing means themselves can be formed by an elastic sealing lip. The sealing lip can have a root section by means of which the sealing lip is arranged in contact, for example glued, on the locking rib, in particular on its free rib edge, or on the counter-locking rib, in particular on its free counter-rib edge. Furthermore, the sealing lip can have a tongue section which is implemented, for example, at an end of the sealing lip opposite to the root section. The tongue section can contact a locking rib spaced apart from the root section, in particular on its free rib edge, or on a counter-locking rib spaced apart from the root section, in particular on its free counter-rib edge, in a touching and gap-free manner in order to cover the sealing gap so that a bypass Fluid flow can be prevented practically completely. The tongue section can be designed to taper in the direction from the root section to its free tongue section end, in such a way that the sealing lip is made relatively thick at the root section and relatively thin at the free tongue section end of the tongue section.

It is also expediently provided that a locking rib and / or a counter-locking rib is formed by a one-piece or multi-part flat body, which expediently has two large surfaces that are oppositely oriented, in particular substantially oppositely oriented, and a circumferential face that connects the large surfaces with one another. This describes a possible physical design of a locking rib and / or a counter-locking rib, although different designs can of course be imagined. Furthermore, the flat bodies can be made from a plastic material or from a composite material. The flat bodies or the locking rib and / or a counter-locking rib are expediently made from the same material as the slide, namely in particular a plastic material or a composite material.

In particular, the slide can be a cuboid, plate-shaped slide body have, which extends along two body axes aligned at right angles to one another, so to speak in terms of length and width. The slide body can have a free edge running around the outside, with at least one locking rib and / or a counter-locking rib being arranged parallel, in particular essentially parallel, or at an angle to a cutout of the edge on the slide body referred to as an edge section. It is also conceivable that a locking rib and / or a counter-locking rib is arranged parallel, in particular essentially parallel, or at an angle with respect to one of the body axes.

Expediently, two or more locking ribs and / or two counter-locking ribs can be arranged parallel to one another, in particular essentially parallel.

Furthermore, the opposite large surfaces of two adjacent locking ribs and / or those of two adjacent counter-locking ribs can be arranged parallel to one another, in particular essentially parallel, but also at an angle to one another.

Furthermore, the slide can have a plate-shaped or cuboid slide body which extends length and width along two body axes aligned at right angles to one another, a body plane being spanned between the body axes. The locking device can comprise at least one locking rib which is arranged on the slide body and protrudes from the slide body at an angle, in particular at right angles or transversely, to the plane of the body.

The locking device preferably has at least one locking rib and / or a counter-locking rib, which is implemented as a one-component 1K component. This has the advantage that a locking rib and / or a counter-locking rib can be produced relatively inexpensively, for example in the context of an injection molding process.

It is possible for the locking device to have at least one row of saw teeth, which is formed from saw teeth that are in contact with one another in a stacking direction. The row of saw teeth can be arranged on or in the area around a circumferential free edge of a slide body of the slide and can be arranged parallel, in particular essentially parallel, to a locking rib and / or a counter-locking rib. Particularly in conjunction with a locking rib and / or a counter-locking rib, a row of sawtooths can contribute to reduced noise generation on the slide, in particular because fluid flowing along the slide is swirled, which means that the fluid flow speeds are relatively low and therefore the vibration effects on the slide are less pronounced.

In the hot position, the slide expediently closes a cold orifice opening surface of the cold channel, so that hot fluid can flow from the hot channel into the mixing channel. In the cold position, the slide closes a hot orifice opening area of the hot runner, so that cold fluid flows from the cold runner into the mixing channel. Furthermore, in at least one intermediate position between the cold position and the hot position, the slide can specify a predeterminable or predefined area proportion, for example ^{specified in m 2} , of the cold orifice opening area of the cold runner and a predeterminable or predefined area proportion, for example in m ² , close the hot orifice opening area of the hot runner, so that hot fluid from the hot runner and cold fluid from the cold runner can flow into the mixing channel in a predeterminable or predetermined volume mixing ratio. Furthermore, the slide can have an actuating device for actuating the slide as part of the slide movement, for example a pinion shaft or a pinion shaft profile or teeth lined up next to one another, with at least one counteracting device, in particular a tooth profile, on the pinion shaft, in particular cooperating with the pinion shaft or the pinion shaft profile or the teeth , is arranged. The counteracting device protrudes transversely to the longitudinal axis over the pinion shaft and interacts in a touching manner when the ventilation device is in operation with the actuating device of the slide to operate the slide during the slide movement. The pinion shaft, the slide, the actuating device and the counter-actuating device can delimit a clear passage between them, into which a locking rib and / or a counter-locking rib protrude from the slide and / or the pinion shaft, forming the sealing gap. This has the effect that the clear passage is closed, so to speak sealed. This has the advantage that practically no fluid can flow between the pinion shaft and the slide, which prevents the formation of noise.

Another basic concept of the invention is to provide a pinion shaft for a ventilation device. A corresponding pinion shaft has a cylindrical shaft body, a longitudinal axis defined by the pinion shaft and a rod extension arranged cohesively on the shaft body, the rod extension defining an axial rod extension longitudinal axis along its main extension, the rod extension longitudinal axis and the longitudinal axis of the pinion shaft being aligned coaxially to one another, wherein between the rod extension and the pinion shaft at least one predetermined breaking section is formed which, as desired, enables the rod extension to be removed from the pinion shaft and wherein the predetermined breaking section is implemented as a cross-sectional taper or as a circumferential notch.

In summary, it remains to be stated: The present invention preferably relates to a ventilation device, with a fluid channel system, with a slide arrangement for providing mixed fluid from cold fluid and / or hot fluid, the slide arrangement having a slide that moves between a hot and cold fluid as part of a slide movement. Position, a cold position and at least one intermediate position can be actuated back and forth, wherein the slide arrangement has a pinion shaft that is rotatably drivable in the circumferential direction about its longitudinal axis and is arranged in contact with the slide for actuating the slide during the slide movement, and wherein the ventilation device has a rod extension which is arranged on the pinion shaft in order to extend the pinion shaft in the direction of the longitudinal axis.

Further important features and advantages of the invention emerge from the subclaims, from the drawings and from the associated description of the figures on the basis of the drawings.

It goes without saying that the features mentioned above and those yet to be explained below can be used not only in the respectively specified combination, but also in other combinations or on their own, without departing from the scope of the present invention.

Preferred exemplary embodiments of the invention are shown in the drawings and are explained in more detail in the following description, with the same reference symbols referring to the same or similar or functionally identical components.

• 1a eine perspektivische Ansicht eines bevorzugten Ausführungsbeispiels einer Belüftungsvorrichtung mit in einem Gehäuse führbar angeordneten Schiebern und Ritzelwellen einer Schieber-Anordnung,
• 1b in einer Schnittansicht eine Belüftungsvorrichtung,
• 1c eine perspektivische Ansicht eines bevorzugten Ausführungsbeispiels einer Belüftungsvorrichtung mit einem einzigen in einem Gehäuse führbar angeordneten Schieber und eine Ritzelwelle,
• 2a eine perspektivische Ansicht einer ersten Schieber-Bauausführung einer ersten Variante des Schiebers mit einer Ritzelwelle gemäß den 1a und 1c,
• 2b eine perspektivische Ansicht einer zweiten Schieber-Bauausführung der ersten Variante des Schiebers gemäß den 1a und 1c, allerdings ohne Ritzelwelle, so dass der Schieber besser zu erkennen ist,
• 2c eine Vorderansicht des Schiebers gemäß 2b gemäß einem in 2b eingetragenen Pfeil IIc, nun allerdings mit Ritzelwelle,
• 2d eine perspektivische Ansicht einer ersten Schieber-Bauausführung einer zweiten Variante des Schiebers ohne Ritzelwelle gemäß den 1a und 1c,
• 2e eine Vorderansicht des Schiebers gemäß 2d nach einem in 2d eingetragenen Pfeil Ile, nun allerdings mit Ritzelwelle,
• 3a in einer Schnittansicht der Belüftungsvorrichtung aus 1c gemäß einer mit gestrichelten Linien illustrierten Schnittebene, in Blickrichtung eines in 1c eingetragenen Pfeils lila, einen Schieber gemäß der ersten Schieber-Bauausführung der ersten Variante des Schiebers und eine Ritzelwelle,
• 3b in einer Schnittansicht der Belüftungsvorrichtung aus 1c gemäß einer mit gestrichelten Linien illustrierten Schnittebene, in Blickrichtung eines in 1c eingetragenen Pfeils Illa, einen Schieber gemäß der ersten Schieber-Bauausführung der zweiten Variante des Schiebers und eine Ritzelwelle,
• 4 eine Schnittansicht der gemäß einer in 2a mit gestrichelten Linien eingetragenen Schnittebene geschnittenen Ritzelwelle der Belüftungsvorrichtung aus 2a, mit Blickrichtung eines in 2a eingetragenen Pfeils IV,
• 5 bis 8 in mehreren Schnittansichten jeweils eine Variante einer gemäß einer nicht dargestellten Schnittebene geschnittenen Ritzelwelle.

It show, each schematically

• 1a a perspective view of a preferred embodiment of a ventilation device with sliders and pinion shafts of a slider arrangement that can be guided in a housing,
• 1b in a sectional view a ventilation device,
• 1c a perspective view of a preferred embodiment of a ventilation device with a single slide guided in a housing and a pinion shaft,
• 2a a perspective view of a first slide construction design of a first variant of the slide with a pinion shaft according to FIG 1a and 1c ,
• 2 B a perspective view of a second slide design of the first variant of the slide according to FIG 1a and 1c , but without pinion shaft, so that the slide can be seen better,
• 2c a front view of the slide according to 2 B according to an in 2 B marked arrow IIc, but now with pinion shaft,
• 2d a perspective view of a first slider design of a second variant of the slider without a pinion shaft according to FIG 1a and 1c ,
• 2e a front view of the slide according to 2d after an in 2d entered arrow Ile, but now with pinion shaft,
• 3a in a sectional view of the ventilation device 1c according to a sectional plane illustrated with dashed lines, in the viewing direction of an in 1c marked purple arrow, a slide according to the first slide design of the first variant of the slide and a pinion shaft,
• 3b in a sectional view of the ventilation device 1c according to a sectional plane illustrated with dashed lines, in the viewing direction of an in 1c registered arrow Illa, a slide according to the first slide design of the second variant of the slide and a pinion shaft,
• 4th a sectional view of the according to an in 2a with dashed lines plotted section plane cut out pinion shaft of the ventilation device 2a , looking towards an in 2a registered arrow IV,
• 5 to 8th in several sectional views each a variant of a pinion shaft cut according to a cutting plane (not shown).

The 1 a to 8th show overall preferred exemplary embodiments of a ventilation device 1,200 which is preferably used for ventilating or air-conditioning a motor vehicle interior of a road motor vehicle, in particular on or in an electrically drivable road motor vehicle. Insofar as components with an identical or at least similar function are present in the exemplary embodiments, identical reference symbols have been assigned in order to avoid repetition.

The 1a shows an example of a first embodiment of a ventilation device 200 in a perspective view. The 1b shows same ventilation device 200 , but in a sectional view. The ventilation device 200 has a housing 201 on, the inside two or more movably arranged slide 202a , 202b and pinion shafts 215 a slide arrangement 204 the ventilation device 200 houses. You can still see the case 201 the ventilation device 200 a fluid channel system 2 has or forms, through the fluid in the in 1b directions indicated by arrows can flow. The fluid channel system 2 has or limits a cold runner 3 , a hot runner 6th and a mixing channel 9 . The cold runner 3 serves to direct a flow of cold fluid 4th from cold fluid 5 , the hot runner 6th serves to direct a flow of hot fluid 7th from hot fluid 8th and the mixing channel 9 serves to direct a mixed fluid flow 10 from mixed fluid 11 , the mixing fluid 11 from cold fluid 5 and / or hot fluid 8th is provided. An example can be in the cold runner 3 an unillustrated refrigeration device and in the hot runner 6th a heat generator 223 be arranged to cool or heat the fluid in the respective channel 3, 6, 9 as desired. The two sliders 202a , 202b according to the 1a and 1b serve to guide one or more of the fluid flows 4, 7, 10 through the fluid channel system 2 to control according to a predetermined or predeterminable volume flow or mass flow and for this purpose a predetermined or predeterminable temperature of the mixed fluid 11 set by mixing. It has been recognized that it is advantageous to use the two slides 202a , 202b to optimize the design according to functional aspects, namely in such a way that the one slide 202a is relatively well suited for setting a volume flow or mass flow of the respective fluid flow and the other slide 202b relatively good for mixing the fluid streams 4, 7, 10 and for adjusting a temperature of the mixing fluid 11 suitable is. This gives a first slide specifically designed for controlling the fluid flows 4, 7, 10 as a function of the volume flow or mass flow 202a , which is also referred to in specialist circles as a forward flow slide valve, and one for providing mixed fluid 11 a second slide suitable for a predetermined or predeterminable temperature 202b , which is known in the relevant specialist circles as the reverse flow slide valve. The slider 202a , 202b are in the housing 201 the ventilation device 200 via a guide device not described in more detail 55 each separately, i.e. independently of one another, can be guided so that the slide 202a , 202b each independently of one another and within the framework of an in 1a and 1b slide movement indicated by double arrows 14th are movable. The first slide can expediently 202a , so the Forward Flow slide, between a hot position 15th , a cold position 16 , an intermediate position 17th (not illustrated) can be operated back and forth. The second slide can expediently 202b , i.e. the reverse flow slide, between a first mixing position 220 , a second mixed position 221 and an intermix position 222 (not illustrated) can be operated back and forth. The different positions 15th , 16 , 220 , 221 are exemplary in 1b indicated.

The slide arrangement 204 points next to the first slide 202a and the second slide 202b two pinion shafts as an example 215 each touching one of the two sliders 202a , 202b are arranged, see the 1a and 1b . The pinion shafts 215 the slide assembly 204 are each cylindrical in shape and have a substantially cylindrical shaft body 224 on, whose cross-section is designed to be round or oval or polygonal. The pinion shafts 215 are in a circumferential direction 225 by one through the respective pinion shaft 215 or longitudinal axis defined by its shaft body 224 229 designed to be driven in rotation around the respective slide 202a , 202b within the scope of the respective slide movement 14th to be able to drive, see esp. 1a . For example, it can be used to drive the pinion shafts 215 a single common actuator or a separate actuator 226 on the housing 201 the ventilation device 200 arranged and driven with the pinion shafts 215 be connected, see esp. 1a , where a separate actuator is used as an example 226 is provided. The actuators 226 can expediently be activated and / or regulated via a control system that is not illustrated.

Furthermore, the pinion shafts 215 on the sliders 202a , 202 are each applied in a touching manner, so that by means of the pinion shafts 215 an actuation of the respective slide 202a , 202b within the scope of the respective slide movement 14th is possible. In this context one can esp. In the 1a realize that every slide 202a , 202b an actuator 227 , in particular a pair of toothed racks or rows of teeth, by means of which the respective slide 202a , 202b within the scope of the respective slide movement 14th is actuatable. The controls 227 the slide 202a , 202b each act appropriately with one on one of the pinion shafts 215 arranged and to the control devices 227 complementary designed counter-actuation device 228 touching together, especially each with a pair of gears or pinions. The counter-actuation devices 228 expediently protrude transversely or at an angle to the respective longitudinal axis 229 over the shaft body 224 the respective pinion shaft 215 so that they are in operation of the ventilation device 200 with the actuator 227 as part of the slide movement 14th can interact in a touching manner without the respective shaft body 224 on the respective slide 202a , 202b grazes.

The 1c shows a further embodiment, namely an exemplary ventilation device 1 in a perspective view, the ventilation device 1 with a housing 53 , with a fluid channel system 2 and with a slide arrangement 12th is equipped, as in the previous embodiment. The case 53 has or limits a fluid channel system 2 from a cold runner 3 , a hot runner 6th and a mixing channel 9 , also as in the previous embodiment. The cold runner 3 serves to direct a flow of cold fluid 4th from cold fluid 5 , the hot runner 6th serves to direct a flow of hot fluid 7th from hot fluid 8th and the mixing channel 9 serves to direct a mixed fluid flow 10 from mixed fluid 11 , the mixing fluid 11 from cold fluid 5 and / or hot fluid 6th is provided, see in particular the 1c . An example can be in the cold runner 3 an unillustrated refrigeration device and in the hot runner 6th a heat generating device not illustrated here 223 be arranged to cool or heat fluid in the respective channel 3, 6 as desired. The slide arrangement 12th is again used to provide mixed fluid 11 from cold fluid 5 and / or hot fluid 8th , especially for mixing cold fluid 5 with hot fluid 8th . The slide arrangement is designed for this purpose 12th , in contrast to the previous embodiment, via a single one with the reference number 13th designated slide and a pinion shaft 18th . The slider 13th , which can be either a forward flow gate valve or a reverse flow gate valve or a combination of forward flow and reverse flow gate valve, is in the housing 53 via a guide device not described in detail 55 movably mounted so that the slide 13th in the context of an esp 1c by a double arrow indicated slide movement 14th between a hot position 15th , a cold position 16 and at least one intermediate position 17th can be actuated back and forth, the different positions 15th , 16 exemplarily in 3a are indicated.

The esp. In the 1c pinion shaft to be recognized 18th the slide assembly 12th is cylindrical in shape and has a substantially cylindrical shaft body 26th on, whose cross-section is designed to be round or oval or polygonal. The pinion shaft 18th is in a circumferential direction 19th around one through the pinion shaft 18th or through its shaft body 26th defined longitudinal axis 20th designed around rotationally drivable, as in the first embodiment. For example, it can be used to drive the pinion shaft 18th an actuator 54 on the housing 53 the ventilation device 1 arranged and driven with the pinion shaft 18th be connected, as in the first embodiment, see esp. 1a and / or 1c. The actuator 54 can expediently via a control 56 controlled and / or regulated according to 1c is the controller 56 advantageously in the actuator 54 integrated. Furthermore is the pinion shaft 18th on the slide 13th touching so that by means of the pinion shaft 18th an actuation of the slide 13th as part of the slide movement 14th is possible.

In this context one can especially in the 1c realize that the slide 13th an actuator 47 , esp. A pair of racks or rows of teeth, by means of which the slide 13th as part of the slide movement 14th is actuatable. The actuator 47 acts with one on the pinion shaft 18th arranged and to the actuating device 47 complementary designed counter-actuation device 48 together, especially with a gear or a pinion. The counter-actuation device 48 expediently protrudes transversely or at an angle to the longitudinal axis 20th over the shaft body 26th the pinion shaft 18th so that they are in operation of the ventilation device 1 with the actuator 47 to operate the slide 13th as part of the slide movement 14th can interact in a touching way.

As indicated above, the slider can 13,202a , 202b According to the two preceding exemplary embodiments, it can in principle be provided in two different variants, namely either as a forward flow slide or as a reverse flow slide. Each variant can include other valve designs. Based on 2a , 2 B and 2c the following describes the function and shape of the first variant of the slide, referred to as the forward flow slide 13th or the slide 202a explained. The described first variant of the slide 13th or the slide 202a can be used in two different valve designs.

The valve known as the Forward Flow valve 13th or slide 202a according to the first variant basically has a slide body 29 which is, for example, cuboid or trapezoidal in shape. The valve body 29 can preferably be made of a plastic or, which can also at least be imagined, of a metal material. The valve known as the Forward Flow valve 13th or slide 202a is used especially for volume flow or mass flow dependent control of the fluid flows 4,7,10 through the ventilation device 1,200. The slide is preferred 13th or the slide 202a upstream, that is in front of the fluid flow, of the heat generating device 223 arranged.

In the 2a , 2d , 2e you can see a perspective view of a first slide construction of the slide 13,202a according to the first variant of the slide 13,202a with one on the slide 13,202a pinion shaft in contact 18.215 detect. The slider 13,202a has a slide body, in particular an essentially plate-shaped slide body 29 which extends length and width along two body axes 35, 36 aligned at an angle to one another, especially at right angles, see esp. 2a . The body axes 35,36 can have a body plane between them 40 clamp, in which the valve body 29 lies.

The valve body 29 extends vertically along a vertical axis which is oriented orthogonally to the body axes 35, 36 and is not illustrated in the figures. In the direction of the vertical axis, however, it is designed only relatively short in comparison with the extension of the length and width. The valve body 29 defines a circumferential, free and flat, contiguous edge 39 . The first valve construction version of the first variant of the valve 13,202a is characterized by a honeycomb reinforced edge 39 which is also called the labyrinth edge 39 could denote, see 2a . As indicated, the edge of the labyrinth has 39 a multitude of honeycomb-like or box-like design elements that are used to stiffen the slider body 29 along the valve body 29 , there especially directly on the edge 39 , are arranged. The individual honeycomb-like or box-like design elements expediently each have a circumferential wall and an opening, the mouth surface of which faces away from the slide body in the direction of the vertical axis 29 shows. Furthermore, the extension of the slide body 29 in the direction of the vertical axis, especially in comparison with the following second slider designs of the first variant, made relatively strong or thick, namely a few millimeters thick, especially 1mm, 2mm or 3mm thick, so that one can say that the edge 39 a thick border 39 forms. The edge 39 or the edge of the labyrinth 39 is, especially in comparison with the following second slider construction of the first variant, relatively stiff and offers relatively high resistance to deformation, for example to pressure load deformation.

The second slider construction version of the first variant of the slider 13,202a , according to 2 B and 2c , also has a slide body 29 which, as above, extends width and length along body axes 35,36. In contrast to the labyrinth edge explained above 39 the second slide design of the first variant of the slide is characterized 13,202a by a C-shaped or U-shaped tapering edge 39 from that compared with the maze edge 39 the first valve construction version of the first variant of the valve 13,202a is designed to be relatively thin and / or flat. The extension of the slider body 29 in the direction of the vertical axis is therefore only a few millimeters thick, for example 0.2mm, 0.5mm or 0.9mm or 1mm, so that one can say that the edge 39 a flat edge 39 forms. This has the beneficial effect that the valve body 29 is relatively flexible and lightweight overall.

For the sake of completeness it should be mentioned that in the 2a , 2c , 2e can also see that the respective pinion shaft 18.215 one with an actuating device 47, 227 of the respective slide 13,202a , 202b has counteracting device 48,228 which can be brought into engagement and furthermore with a rod extension 57 is equipped, which is an example of a free shaft end 58 of the shaft body 26,224 is attached. To the pole extension 57 For example, the actuator 54, 226 can act as a drive. The pole extension 57 can with functional elements all around the outside 67 be equipped, for example. Tooth flanks or the like. Alternatively or additionally, the rod extension 57 Can be used for assembly purposes, e.g. as an insertion aid for the pinion shaft 18.215 in recesses arranged on the housing 53,201. With regard to the pole extension 57 at this point refer to the description of the 4th to 7th pointed out, where it is described in more detail how the rod extension 57 is designed.

Based on 2d and 2e the function and shape of a second variant of the slide known as a reverse flow slide 13th or the slide 202b explained. The slide described 13th , 202b is only presented in a single slider design, but can of course make the modifications described above according to the first and second slider designs of the first variant of the slider 13th , 202a exhibit.

The valve known as the reverse flow valve 13th or slide 202b basically has a valve body 29 which is, for example, cuboid or trapezoidal in shape. The valve body 29 can preferably be made of a plastic or, which can also at least be imagined, of a metal material. The valve known as the reverse flow valve 13th , 202b When the ventilation device 1,200 is in operation, it serves as a temperature mixing flap; it is therefore preferably downstream of a heat generating device in the fluid flow direction 223 arranged and mixed, depending on the position as part of the slide movement 14th , Cold fluid 5 and / or hot fluid 8th to mixed fluid 11 . This allows mixed fluid 11 be provided with a predetermined or predeterminable temperature. The valve body 29 extends along two body axes 35, 36 aligned at an angle to one another, especially at right angles, in length and width, see esp. 2d . The valve body 29 extends vertically along a vertical axis that is oriented orthogonally to the body axes 35, 36 and is not illustrated in the figures, but in comparison with the extension of the length and width it is only relatively short. The valve body 29 defines a circumferential, free and flat, contiguous edge 39 .

Using the in 2d , 2e shown views of the slide 13th , 202b you can see that the valve body 29 a relatively thick circumferential edge 39 if you have the slider 13th , 202b according to the second slide variant with the slide 13,202a according to the first variant, which is therefore also called a labyrinth edge 39 could denote. As indicated, the edge stands out 39 through a variety of box-like design elements that stiffen the slider body 29 , especially transversely or parallel to the body axes 35,36, along the slide body 29 , especially on the edge 39 , are arranged. The individual box-like design elements expediently have an opening, the mouth surface of which is in the direction of one of the body axes 35, 36 away from the slide body 29 demonstrate. Furthermore, the extension of the slide body 29 in the direction of the vertical axis, especially in comparison with the above slider designs of the first slider variant, made relatively strong or thick, namely a few millimeters thick, especially 1mm, 2mm or 3mm thick, so that one can say that the edge 39 a relatively thick border 39 forms. The edge 39 is, especially in comparison with the above construction variants of the first slide variant, relatively stiff and offers relatively high resistance to deformation, for example to pressure load deformation.

The 3a shows in a sectional view the ventilation device 1,200 with a slide referred to as a forward flow slide 13,202a according to the second slider design of the first slider variant, i.e. a forward flow slider with a C-shaped or U-shaped edge 39 . You can see that the slide 13,202a upstream of a heat generating device indicated by dotted lines 223 is arranged. You can also see that the slide 13,202a in the housing 53,201 via a guide device not described in detail 55 is movably mounted so that the slide 13,202a within the scope of the slide movement indicated by a double arrow 14th between a hot position 15th , a cold position 16 and at least one intermediate position 17th can be operated back and forth. This allows a fluid flow through the fluid channel system 2 optionally controlled and / or regulated, in particular according to a predetermined or predeterminable volume flow or mass flow.

The 3b shows in a sectional view the ventilation device 1,200, which is equipped with a slide designed as a reverse flow slide 13th , 202b is equipped according to the first slide design of the second slide variant. The slider 13th , 202b is in the housing 53,201 via a guide device not described in detail 55 movably mounted so that the slide 13th , 202b in the context of a slide movement indicated by a double arrow 14th between a first mixed position 220 , a second mixed position 221 and an intermix position 222 can be operated back and forth. The slider 13th , 202b can in the first mixed position 220 a cold orifice area 44 of the cold runner 3 close fluid-tight so that hot fluid 8th from the hot runner 6th into the mixing channel 9 flows. Furthermore, the slide 13, 202b in the second mixed position 221 a hot orifice area 45 of the hot runner 6th close fluid-tight so that cold fluid 5 from the cold runner 3 into the mixing channel 9 flows. Furthermore, the slide 13th , 202b in at least one intermediate mixing position 222 between the first and second mixed position 220 , 221 be operated so that the slide 13th , 202b a predeterminable or predefined area proportion of the cold mouth opening area 44 and a predeterminable or predefined area proportion of the hot orifice opening area 45 closes so that volume fractions of hot fluid that can be adjusted as required 8th from the hot runner 6th and of cold fluid 5 from the cold runner 3 in the mixing channel 9 can be provided mixed.

On the basis of the figure, it can also be seen that the ventilation device 1,200, for example, has a locking device 21 which means on the slide 13,202a , 202b arranged locking ribs 24 and / or by means of the pinion shaft 18th arranged counter-locking ribs 27 a particularly relatively narrow, in particular a 0.1mm, 0.2mm, 0.5mm, 1mm or 2mm narrow sealing gap 23 between the slide 13,202a , 202b and the pinion shaft 18.215 Are defined. As far as in the following only from "slide 13, 202a , 202b ”is, of course, all variants described above are included. In any case, it can be used to connect an in 3a bypass fluid flow indicated in each case by a dotted line 22nd from mixed fluid 11 and / or from cold fluid 5 and / or from hot fluid 8th between the slide 13,202a , 202b and the pinion shaft 18.215 be reduced or prevented. How the sealing gap works 23 is like that of a labyrinth seal, for example. Due to the decreased bypass fluid flow 22nd between the slide 13,202a , 202b and the pinion shaft 18.215 acoustic noise can be heard when the ventilation device is operating 1,200 on the slide 13,202a , 202b and / or on the pinion shaft 18.215 reduced or practically completely prevented, for example because a reduced vibration excitation of the slide 13,202a , 202b and / or the pinion shaft 18.215 is realized.

The sealing gap 23 is especially also in 2c and 2e to recognize, whereby he is evident between a free edge of the rib 25th a barrier rib 24 and a cylindrical shaft body 26,224 the pinion shaft 18.215 is formed. Appropriately form the pinion shaft 18.215 , the slider 13,202a , 202b , the actuator 47 and the counteracting device 48 between them a clear passage 49 into the one from the slider 13,202a , 202b and / or from the pinion shaft 18.215 outgoing barrier rib 24 and / or the counter-locking rib 27 with the formation of the sealing gap 23 protrude. It is of course also possible that the sealing gap 23 between a free opposite rib edge 28 the counter-locking rib 27 and a slider body 29 of the slide 13,202a , 202b is formed.

The locking device 21 can have a sealant 30th available, see esp. 3a , the example of the counter-locking rib 27 , there namely on its free opposite rib edge 28 , is arranged. The sealant 30th can the between slide 13,202a , 202b and pinion shaft 18.215 formed sealing gap 23 Expediently cover in a fluid-tight manner and thus achieve an improved sealing effect. In 3a can also be seen that the sealant 30th as an elastic sealing lip 31 is realized via one on the counter-locking rib 27 , especially on its free counter-rib edge 28 , touching root section 50 and over a tongue section 51 that is in contact with the locking rib 24 , especially on the free edge of the ribs 25th or on the slide 13,202a , 202b can be touching. It can also be seen that the tongue section 51 or the sealing lip 31 in the direction of the free end of the tongue 52 is designed to be tapered.

A barrier rib 24 or a counter-locking rib 27 can each from a one-piece flat body 32 be formed, the two oppositely oriented large areas 33 and a circumferential one, the large areas 33 interconnecting, end face 34 has, see esp. the 3a . Anyway, there is a barrier rib 24 and a counter-locking rib 27 parallel to an edge section 38 of the edge 39 on the valve body 29 arranged. The barrier ribs are exemplary 24 so on the slide 13,202a , 202b arranged that they are each angled, in particular at right angles, to the plane of the body 40 from the valve body 29 stick out.

Furthermore shows in particular 2c one with the reference number 41 Labeled sawtooth row of the locking device 21 that preferred with the locking rib 24 and / or with the counter-locking rib 27 cooperates in order to counteract the formation of interfering noises during the operation of the ventilation device 1,200. A row of saw teeth 41 has several saw teeth 43 or other protrusion bodies that are in an in 2c stacking direction indicated by a dotted double arrow line 42 are lined up touching each other. The stacking direction 42 is expediently parallel or essentially parallel to the body axis 35 aligned. Between the individual saw teeth 43 a tooth gap is formed in each case. The saw teeth 43 and the tooth gaps can interact with the fluid flow in the ventilation device 1,200 in a streamlined manner from an acoustic point of view. The tooth gaps are not labeled in detail here. In any case, one or more are, according to 2c two, sawtooth rows 41 on or in the area around the surrounding free edge 39 of the valve body 29 of the slide 13,202a , 202b arranged and in each case parallel to a locking rib 24 and a counter-locking rib 27 aligned.

The 4th shows in a sectional view a part of the along its longitudinal axis 20.229 or the pinion shaft cut along a section plane plotted with dashed lines 18.215 out 2a with the viewing direction of an arrow IV entered there. As described above, at a free shaft end 58 of the shaft body 26,224 the pinion shaft 18.215 , especially on a placement area 59 of the free end of the shaft 58 , in the direction of the longitudinal axis 20.229 a rod extension 57 appended. The pole extension 57 is as a hollow cylindrical base body 65 designed with a circular base cross-sectional area. The pole extension 57 or its base body 65 can cohesively and / or non-positively and / or positively on the pinion shaft 18.215 be arranged, in particular by integrally connecting a cohesive component made of rod extension 57 and pinion shaft 18.215 can provide, so to speak, a one-piece pinion shaft rod extension component. The pole extension 57 extends the pinion shaft 18.215 in the direction of the longitudinal axis 20.229 to one side. It is conceivable if the pinion shaft 18.215 two free shaft ends 58 has to the pinion shaft 18.215 two rod processes 57 to equip, namely one rod extension each 57 on a mounting surface 59 a free shaft end 58 so as to extend the pinion shaft 18.215 in the direction of the longitudinal axis 20.229 to be reached on both sides.

Every pole extension 57 defines an axial longitudinal axis of the rod extension along its main extent 60 . According to 4th is provided as an example, the rod extension 57 so at the free end 58 the pinion shaft 18.215 to arrange that the pole extension longitudinal axis 60 of the rod process 57 and the longitudinal axis 20.229 the pinion shaft 18.215 are aligned coaxially to one another. In principle, one can also imagine the pole extension 57 angular on the pinion shaft 18.215 to be arranged so that the longitudinal axis of the pole extension 60 at an angle to the longitudinal axis 20.229 is aligned. For example, to save weight, especially after the pinion shaft has been assembled 18.215 in the Housing 53,201 is provided as an example that between the pinion shaft 18.215 and the pole extension 57 a predetermined breaking section 61 is formed. The predetermined breaking section 61 expediently extends along the mounting surfaces 59 or is formed by it. The predetermined breaking section 61 serves to completely remove the rod extension as desired 57 from the pinion shaft 18.215 to enable, for example, in which the rod extension 57 , in particular manually by hand or automatically by an automation device, is loaded with a predetermined breaking torque until the predetermined breaking section 61 gives way and there is a break between the rod process 57 and pinion shaft 18.215 or to detach the rod extension 57 from the pinion shaft 18.215 comes. One can imagine the predetermined breaking section 61 to be realized as a cross-sectional tapering, with at least a single predetermined breaking cross-section 62 of the predetermined breaking section 61 based on each rod extension cross-section 63 of the rod process 57 and based on each pinion shaft cross-section 64 the pinion shaft 18.215 is designed smaller in area. As a result, a mechanical weak point is established, so to speak, in terms of construction, which means that the rod extension is removed 57 from the pinion shaft 18.215 enables. Furthermore, the predetermined breaking section 61 be realized as a material weakening section. Here are the material properties of the predetermined breaking section 61 decide for a fracture behavior or for the removal. The material properties of the predetermined breaking section 61 are expediently based on the material properties of the predetermined breaking section 61 immediately surrounding areas of the pinion shaft 18.215 and the extension of the rod 57 Realized in a way that promotes breaking.

According to 4th one can also see that the rod extension 57 an outside circumferential outer jacket surface 66 Has. On the outer jacket surface 66 can in the circumferential direction 19,225 around the rod extension 57 around spaced apart functional elements 67 , preferably tooth flanks, to which a tool can be placed in contact or to which the in 4th Actuator 54, 226 indicated in sections by dotted lines can be arranged to drive, in particular around the pinion shaft 18.215 to operate. If necessary, you can at a free end of the pinion shaft 18.215 form a chamfer and / or taper to ensure the function as an insertion aid. In any case, the predetermined breaking section 61 be dimensioned so that it can withstand a maximum torque of the drive actuator over the required service life.

The functional elements preferably extend 67 over the predetermined breaking section 61 away. An actuator can then with the left of the predetermined breaking section 61 remaining functional elements come into operative connection as soon as the rod extension 57 was removed. As a result, a relatively rigid and torque-safe solution can be made possible.

The invention has further recognized that in an alternative form of the invention, the rod extension 57 on the pinion shaft 18.215 can remain so that no predetermined breaking section 61 is required. In this case, the profile with the functional elements 67 be used for torque transmission or the end protrudes correspondingly deep into the actuator or this has a hollow profile open at both ends, then the area provided with a chamfer as an assembly aid protrudes from the drive.

In the 5 to 8th are different variants of a pinion shaft in several sectional views 18.215 with rod extension 57 to recognize. In the 5 is a variant of the pinion shaft 18.215 with rod extension 57 shown in which the rod extension 57 a hollow-cylindrical base body 65 with a circular base cross-sectional area, as in 4th . In contrast to the variant from 4th is off for the variant 5 provided the base body 65 the pinion shaft 18.215 to be made smaller in diameter than the pinion shaft there 18.215 or its shaft body 26,224 . In particular, it is provided in the area around or directly on the predetermined breaking section 61 a circumferential notch 19,225 68 bring in. The notch 68 can be V-shaped when viewed in cross-section, the base of the notch being the notch 68 is expediently designed to taper to a point, so that starting from the notch base of the notch 68 a break / crack can be initiated to the pinion shaft 18.215 from the pole process 57 to remove.

In the 6th is a variant of the pinion shaft 18.215 with rod extension 57 to recognize, with the base body there 65 of the rod process 57 a solid material base body 65 is. The base body 65 is therefore not designed to be hollow on the inside, but instead is made entirely of a plastic material or a composite material, for example. The base body 65 according to 6th still has at his in the direction of the longitudinal axis 20.229 from the pinion shaft 18.215 leading free end a single or a set of lead-in surfaces 69 that are angular, in particular acutely angled, with respect to the longitudinal axis 20.229 are designed. For example, is the lead-in area 69 designed as a circumferential conical or spherical surface between itself and the longitudinal axis 20.229 encloses an angle of 10 ° to about 90 °. Through the lead-in surfaces 69 can inserting the pinion shaft 18.215 with rod extension 57 in a recess of the housing 53,201 expediently in the context of an assembly of the pinion shaft 18.215 be favored.

In the 7th is a variant of the pinion shaft 18.215 with rod extension 57 illustrated, with the base body there 65 of the rod process 57 a solid material base body 65 is. In contrast to the previous variants, the basic body is 65 according to 7th Thin in diameter like a pencil lead, in particular 1 mm, 2 mm, 3 mm or 4 mm thin. So you can use the base body 65 or the rod extension 57 still relatively good as an insertion aid when assembling the pinion shaft 18.215 use. In addition, the base body 65 relatively easy, for example by hand, from the pinion shaft because of its thin diameter 18.215 canceled. In this variant, in particular, a separate predetermined breaking section can be formed 61 dispense.

In the 8th is another variant of the pinion shaft 18.215 with rod extension 57 shown, with the base body there 65 of the rod process 57 is designed as a hollow cylinder.

Claims (15)

Ventilation device, in particular an air conditioning device, expediently an HVAC air conditioning device, for a road vehicle, preferably for an electrically drivable road vehicle, - With a fluid channel system (2) from a cold channel (3) for guiding a cold fluid stream (4) from cold fluid (5), a hot channel (6) for guiding a hot fluid stream (7) from hot fluid (8) and a mixing channel (9) to Conducting a mixed fluid stream (10) from mixed fluid (11) provided from cold fluid (5) and / or hot fluid (6), - With a slide arrangement (12, 204) for providing mixed fluid (11) from cold fluid (5) and / or hot fluid (8), - wherein the slide arrangement (12,204) has a slide (13,202a, 202b) which, in the course of a slide movement (14), in particular between a hot position (15), a cold position (16) and at least one intermediate Position (17), can be actuated back and forth, - wherein the slide arrangement (12,204) has a pinion shaft (18,215) for actuating the slide (13,202a, 202b) which can be driven in rotation around its longitudinal axis (20,229) and is arranged in contact with the slide (13,202a, 202b) in the circumferential direction (19,225) The frame of the slide movement (14), - and wherein the ventilation device (1,200) has a rod extension (57) which is arranged on the pinion shaft (18,215) in order to extend the pinion shaft (18,215) in the direction of the longitudinal axis (20,229), so that the rod extension (57) is a rotary actuation the pinion shaft (18,215) and / or in the context of a pinion shaft assembly for handling the pinion shaft (18,215). Device according to Claim 1 , characterized in that the pinion shaft (18,15) has a shaft body (26,224), a mounting surface (59) on which the rod extension (57) is arranged is formed on at least one free shaft end (58) of the shaft body (26,224) . Device according to Claim 1 or 2 , characterized in that the rod extension (57) defines an axial rod extension longitudinal axis (60) along its main extension, the rod extension longitudinal axis (60) and the longitudinal axis (20,229) of the pinion shaft (18,215) being coaxially aligned with one another. Device according to one of the preceding claims, characterized in that at least one predetermined breaking section (61) is formed between the rod extension (57) and the pinion shaft (18,215), which, as desired, enables the rod extension (57) to be removed from the pinion shaft (18,215). Device according to Claim 4 , characterized in that the predetermined breaking section (61) is realized as a cross-sectional taper, with at least one single predetermined breaking cross section (62) of the predetermined breaking section (61) based on each rod extension cross section (63) of the rod extension (57) and based on each pinion shaft cross section ( 64) of the pinion shaft (18,215) designed to be smaller in area. Device according to Claim 4 , characterized in that the predetermined breaking portion (61) is realized as a material weakening portion, the material properties of the predetermined breaking portion (61) based on the material properties of the areas immediately surrounding the predetermined breaking portion (61) on the pinion shaft (18, 215) and the rod extension (57) being realized in a way that promotes breaking are. Device according to one of the preceding claims, characterized in that the rod extension (57) is arranged on the pinion shaft (18, 215) with a material fit and / or force fit and / or form fit. Device according to one of the preceding claims, characterized in that the rod extension (57) and the pinion shaft (18, 215) are made in one piece. Device according to one of the preceding claims, characterized in that the rod extension (57) has a hollow-cylindrical or cylindrically shaped base body (65) which is circular, circular, oval, oval-ring-shaped or polygonal at every point along the longitudinal axis (60) of the rod extension Has basic cross-sectional area. Device according to one of the preceding claims, characterized in that functional elements (67), preferably tooth flanks, which are spaced apart from one another in the circumferential direction (19, 225) and on which a tool can be placed in contact or on which are arranged on an outer jacket surface (66) of the rod extension (57) an actuator can be arranged to drive the pinion shaft (18,215). Device, in particular according to one of the preceding claims, characterized in that the ventilation device (1,200) has a blocking device (21) which emits a bypass fluid flow (22) between the slide (13,202a, 202b) and the pinion shaft (18,215) Mixing fluid (11) and / or from cold fluid (5) and / or from hot fluid (8) inhibiting or blocking sealing gap (23) defined in order to avoid acoustic noise and vibrations generated by the bypass fluid flow (22) during operation of the ventilation device (1,200) to reduce, wherein the locking device (21) has a locking rib (24) which is arranged in contact with the slide (13,202a, 202b) or integrally formed on the slide (13,202a, 202b), the sealing gap (23) between a free rib edge (25) of the locking rib (24) and a cylindrical shaft body (26,224) of the pinion shaft (18,215) is formed. Device according to the preceding claim, characterized in that the locking device (21) has a sealing means (30) which is attached to the locking rib (24), in particular to its free rib edge (25), or to the counter-locking rib (27), in particular is arranged on its free counter-rib edge (28) in order to expediently seal the sealing gap (23) in a fluid-tight manner, the sealing means (30) being formed by an elastic sealing lip (31) which covers the sealing gap (23), the sealing lip (31) is arranged in a touching manner via a root section (50) on the locking rib (24), in particular on its free rib edge (25), or on the counter-locking rib (27), in particular on its free counter-rib edge (28), and wherein the sealing lip (31) has a tongue section (51) which is in contact with the locking rib (24), in particular on its free rib edge (25), or on the counter-locking rib (27), in particular on its free counter-rib edge (28), is in contact in order to cover the sealing gap (23), the tongue section (51) tapering in the direction of its free tongue end (52). Device according to one of the preceding claims, characterized in that the locking device (21) has at least one sawtooth row (41) which is formed from sawtooths (43) touching one another in a stacking direction (42), the sawtooth row (41) on or in Area around a circumferential free edge (39) of a slide body (29) of the slide (13, 202a, 202b) and is arranged parallel, in particular essentially parallel, to a locking rib (24) and / or a counter-locking rib (27). Device according to one of the preceding claims, characterized in that the slide (13, 202a, 202b) in the hot position (15) closes a cold orifice opening surface (44) of the cold channel (3) in a fluid-tight manner, so that hot fluid (8) is discharged the hot runner (6) flows into the mixing channel (9), - wherein the slide (13, 202a, 202b) in the cold position (16) closes a hot orifice surface (45) of the hot runner (6) in a fluid-tight manner, so that cold fluid ( 5) flows out of the cold channel (3) into the mixing channel (9), - the slide (13, 202a, 202b) in at least one intermediate position (17) between the cold position (16) and the hot position (15 ) a predeterminable or predetermined area portion (46) of the cold outlet opening surface (44) of the cold runner (3) and a predeterminable or predetermined area portion (46) of the hot outlet opening area (45) of the hot runner (6) closes so that hot fluid (8) from the hot runner (6) and cold fluid (5) from the cold runner (3) in a predeterminable or vo - The slide (13, 202a, 202b) has an actuating device (47) for actuating the slide (13, 202a, 202b) during the slide movement (14), with the pinion shaft (18, 215 ) at least one counter-actuation device (48) is arranged, which protrudes transversely to the longitudinal axis (20,229) over the pinion shaft (18,215) and during operation of the ventilation device (1,200) with the actuation device (47) of the slide (13,202a, 202b) for operating the slide (13,202a, 202b) interacts in a touching manner in the course of the slide movement (14), - wherein the pinion shaft (18,215), the slide (13,202a, 202b), the actuating device (47) and the counter-actuating device (48) have a clear passage between them ( 49) into which a locking rib (24) and / or a counter-locking rib (27) protrude from the slide (13,202a, 202b) and / or from the pinion shaft (18,215) to form the sealing gap (23). Pinion shaft for a ventilation device (1,200), in particular an air conditioning device, expediently an HVAC air conditioning device, for a road motor vehicle, preferably for an electrically drivable road motor vehicle, expediently according to one of the preceding claims, with a cylindrical shaft body (26,224), one through the pinion shaft (18,215 ) defined longitudinal axis (20,229) and a rod extension arranged in a cohesive manner on the shaft body (26,224) (57), the rod extension (57) defining an axial rod extension longitudinal axis (60) along its main extent, the rod extension longitudinal axis (60) and the longitudinal axis (20,229) of the pinion shaft (18,215) being aligned coaxially to one another, with between the Rod extension (57) and the pinion shaft (18,215) at least one predetermined breaking section (61) is formed which, as desired, enables the rod extension (57) to be removed from the pinion shaft (18,215) and wherein the predetermined breaking section (61) is a cross-sectional taper or a circumferential notch (68 ) is realized.

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