DE102017003550A1 - Method for operating a heating, ventilation and / or air conditioning system and heating, ventilation and / or air conditioning system - Google Patents

Abstract

The invention relates to a method for operating a heating, ventilation and air conditioning system (K) of a vehicle (F) with at least one steerable outlet, for introducing an air flow into a vehicle interior (1). According to the invention, the vehicle interior (1) is subdivided into a plurality of ventilation zones (B1 to B4) and it is detected in which ventilation zone (B1 to B4) a vehicle seat (2, 3) with an occupant is located, ventilation of the respective ventilation zone (B1 to B4) is activated in response to an occupant in it.

Description

The invention relates to a method for operating a heating, ventilation and / or air conditioning system of a vehicle with at least one steerable outlet, for introducing an air flow into a vehicle interior. Furthermore, the invention relates to a heating, ventilation and / or air conditioning system of a vehicle.

From the DE 10 2015 115 066 A1 For example, a directed infra-red target seeking heating, ventilating and air conditioning system and a method for controlling such a heating, ventilating and air conditioning system are known. The heating, ventilation and air conditioning system has a steerable outlet for introducing a flow of treated air into the passenger compartment of a vehicle. A thermographic imager is configured to capture thermographic images, covering a fixed region in the passenger compartment in which an occupant is potentially located. An HVAC control circuit is configured to compress a thermographic image on a temperature map representing pixels of the thermographic image that fall within a predetermined temperature range corresponding to the occupant. In addition, the HVAC control circuit is configured to filter the temperature map in accordance with a sliding window to merge continuous regions of pixels falling on average within the predetermined temperature range, to quantify an area for each continuous region, a center of gravity of a continuous region locate a largest area and direct the steerable outlet to the center of gravity. Air flows are routed to different occupant areas based on seat occupancy detection.

The invention has for its object to provide a comparison with the prior art improved method for operating a heating, ventilation and / or air conditioning system of a vehicle and an improved heating, ventilation and air conditioning system for a vehicle.

The object is achieved with respect to the method by the in claim 1 and in terms of the heating, ventilation and / or air conditioning system by the features specified in claim 10.

Advantageous embodiments of the invention are the subject of the dependent claims.

A method for operating a heating, ventilation and / or air conditioning system of a vehicle with at least one steerable outlet for introducing an air flow into a vehicle interior provides according to the invention that the vehicle interior is divided into several ventilation zones and is detected in which ventilation zone Vehicle seat is located with an occupant, wherein aeration of the respective ventilation zone is activated in response to an occupant located in this ventilation zone.

By means of the method, a zone-based ventilation concept is specified, which can be implemented independently of a position of a vehicle seat in the vehicle interior, whereby a thermal comfort in the vehicle interior can be significantly increased.

In particular, in autonomous driving, the vehicle seat can be positioned, for example, backward facing the direction of travel, so that the occupant faces a rear area of the vehicle on the vehicle seat.

By means of the method, it is possible that the ventilation for the occupant on the vehicle seat is independent of its position and / or regardless of its seat settings.

In addition, an energy efficiency of the heating, ventilation and air conditioning system is increased, since an air conditioning is made possible substantially only occupant related.

In one embodiment of the method, the ventilation is carried out by means of fixed roof and / or floor outlet openings of the vehicle and by means of vehicle-specific ventilation openings.

In this case, each ventilation zone stationary roof and / or Bodenausströmöffnungen of the vehicle and vehicle-specific ventilation openings are assigned, so that each zone of the vehicle interior ventilated, in particular ventilated, can be.

A further possible embodiment provides that, depending on an external climate, cold air is supplied by means of the roof outflow openings, or warm air is supplied to the vehicle interior by means of the floor outlet openings.

Preferably, the heating, ventilation and / or air conditioning system is controlled so that the ventilation zone cold air is supplied through the Dachausströmöffnungen, as this decreases due to their higher density down and thereby reaches the occupant better than if the cold air of the corresponding ventilation zone is supplied via the Bodenausströmöffnungen.

In particular, the respective ventilation zone cold air at relatively high ambient temperatures, ie in cooling, automatically fed through the Dachausströmöffnungen so that the ventilation zone cools relatively quickly and a temperature-related well-being of the occupant can adjust relatively quickly in this ventilation zone.

In cooling, a development of the method provides that cold air is sucked in by means of a fan arranged in the vehicle seat, guided through the vehicle seat and led out of the vehicle seat.

The cold air heats up during the passage through the vehicle seat and thus increases due to their lower density upwards, so that there is a largely closed flow roll around the vehicle seat in the interaction between the stationary Dachausströmöffnungen, the blower in the vehicle seat and the vehicle-mounted ventilation openings. This flow roll changes due to the vehicle-mounted elements, i. H. due to the blower and the ventilation openings, in a change of a position of the vehicle seat within the vehicle interior with.

In one possible embodiment, the ventilation zone is automatically supplied with warm air in a heating case via the stationary floor outlet openings assigned to the ventilation zone.

In one embodiment, in the case of heating, a direction of rotation of a fan arranged in the vehicle seat is reversed with respect to a cooling case, with warm air being guided through the vehicle seat and led out of the vehicle seat downwards.

By a suction effect of the air taken out from the vehicle seat downwards, part of the warm air flowing out of the bottom outflow openings is entrained and directed in the direction of the feet of the occupant on the vehicle seat in the corresponding ventilation zone. This considerably increases comfort for the occupant. Even in the heating case, a flow roll is built around the vehicle seat due to the arrangement of the respective outflow and ventilation openings.

In a further embodiment it is provided that moisture is added to a led out of the roof outflow air. The addition of moisture is used to increase comfort for the occupant on the vehicle seat, as dry mucous membranes can be largely avoided, and the occupant can also be vitalized by the moisture.

It is possible that the addition of moisture is predetermined in time, so that the enrichment of the air with moisture, for example as a comfort function with respect to an activated assistance system for detecting fatigue and / or inattention of an occupant, in particular a driver of the vehicle, this offered. The assistance system is known as a so-called attention assistant.

Moreover, the invention relates to a heating, ventilation and / or air conditioning system of a vehicle, in which a vehicle interior is subdivided into ventilation zones, wherein each ventilation zone stationary roof and / or Bodenausströmöffnungen the vehicle and vehicle-mounted ventilation openings are assigned and a presence of an occupant a vehicle seat can be detected, wherein a ventilation of the respective ventilation zone in response to an occupant in this occupant is activated.

Embodiments of the invention are explained in more detail below with reference to drawings.

• 1 schematisch eine Schnittdarstellung eines Fahrzeuginnenraumes mit Bestandteilen eines Heizungs-, Lüftungs- und Klimatisierungssystems,
• 2 schematisch eine Schnittdarstellung des Fahrzeuginnenraumes mit einander zugewandten Fahrzeugsitzen im Kühlfall,
• 3 schematisch eine Schnittdarstellung des Fahrzeuginnenraumes mit verschieden positionierten Fahrzeugsitzen im Heizfall,
• 4 schematisch eine erste Anordnung von Dachausströmöffnungen im Fahrzeuginnenraum,
• 5 schematisch eine zweite Anordnung von Dachausströmöffnungen im Fahrzeuginnenraum,
• 6 schematisch eine dritte Anordnung von Dachausströmöffnungen im Fahrzeuginnenraum und
• 7 schematisch eine vierte Anordnung von Dachausströmöffnungen im Fahrzeuginnenraum.

Showing:

• 1 1 is a schematic sectional view of a vehicle interior with components of a heating, ventilation and air conditioning system;
• 2 schematically a sectional view of the vehicle interior with mutually facing vehicle seats in the case of cooling,
• 3 schematically a sectional view of the vehicle interior with differently positioned vehicle seats in the heating case,
• 4 schematically a first arrangement of Dachausströmöffnungen in the vehicle interior,
• 5 schematically a second arrangement of Dachausströmöffnungen in the vehicle interior,
• 6 schematically a third arrangement of Dachausströmöffnungen in the vehicle interior and
• 7 schematically a fourth arrangement of Dachausströmöffnungen in the vehicle interior.

Corresponding parts are provided in all figures with the same reference numerals.

1 shows a sectional view of a vehicle F, in particular a vehicle interior 1 , with two consecutively arranged vehicle seats 2 . 3 and components of one Heating, ventilation and air conditioning system K, ie an air conditioning system of the vehicle 1 ,

Such a heating, ventilation and air conditioning system K in the vehicle F serves to create a thermally comfortable climate vehicle interior regardless of the weather and largely uphold.

As described above, two consecutively arranged vehicle seats 2, 3 are shown in their seat back 2.1 . 3.1 one seat occupancy sensor each 4 is arranged.

In addition, in a seat cushion forming a seat 2.2 . 3.2 one fan each 5 , arranged a so-called seat blower, wherein the seat cushion 2.2 . 3.2 on a bottom a number of ventilation holes 2.3 . 3.3 having.

At one area of the backrest 2.1 . 3.1 of the respective vehicle seat 2 . 3 There are a number of other ventilation openings 2.4 . 3.4 ,

At the ventilation openings 2.3 . 3.3 of the respective seat cushion 2.2 . 3.2 and the other ventilation openings 2.4 . 3.4 the respective seat back 2.1 . 3.1 Depending on the operating case, these are discharge openings or intake openings which interact with the heating, ventilation and air conditioning system K.

In addition, has a vehicle roof 6 a number of roof outlets 6.1 to 6.4 on, in which 1 to 3 only two roof outlets 6.1 . 6.2 are shown.

According to the present embodiment, the roof outflow openings 6.1 the vehicle seat 2 and the other roof outlets 6.2 the other vehicle seat 3 assigned.

It also includes a vehicle floor 7 a number of floor outlets 7.1 . 7.2 , where also the Bodenausströmöffnungen 7.1 the vehicle seat 2 and the other Bodenausströmöffnungen 7.2 the other vehicle seat 3 assigned.

Furthermore, in the 1 a windshield 8th and a rear window 9 of the vehicle F shown.

In order for a vehicle seat 2 . 3 , In particular for a non-illustrated occupant on one of the vehicle seats 2 . 3 , An air conditioning during a driving operation of the vehicle F regardless of a position of the corresponding vehicle seat 2 . 3 inside the vehicle interior 1 to allow is provided according to the invention, the vehicle interior 1 divided into ventilation zones B1 to B4, wherein in the 1 to 3 only two ventilation zones B1, B2 are shown.

In particular, in a vehicle F, which is moved in autonomous driving, a driver of the vehicle F is his driving task, which takes over the vehicle F.

As a result, the driver as occupant of the vehicle F has the opportunity to devote himself to other activities, such as reading.

In addition, the driver can his vehicle seat 2 turn in the direction of a rear area, leaving the vehicle seat 2 is oriented backwards to the direction of travel, as in 2 is shown in more detail.

In 2 is a sectional view of the vehicle interior 1 with activated heating, ventilation and air conditioning system K using the example of a cooling case, in particular a summer ventilation case shown.

As described above, the vehicle interior is 1 divided into ventilation zones B1, B2, wherein in the present embodiment each vehicle seat 2 . 3 is arranged in a ventilation zone B1, B2. This is the vehicle seat 2 in a ventilation zone B1 and the other vehicle seat 3 in a further ventilation zone B2 of the vehicle interior 1 ,

Based on detected signals of the respective seat occupancy sensor 4 it is determined which vehicle seat 2 . 3 of the vehicle F is occupied by an occupant. In the present embodiment according to 2 no occupants are shown, with embodiments described below on occupied by occupants vehicle seats 2 . 3 Respectively.

On the basis of detected signals of at least one further sensor (not shown), it is determined in which ventilation zone B1, B2 a vehicle seat occupied by an occupant is located 2 . 3 is, wherein this ventilation zone B1, B2 preferably ventilated, in particular air-conditioned, is. In this case, the at least one sensor can be particularly preferably designed as an image acquisition unit, in particular as a camera. In this case, the at least one sensor is in the vehicle interior 1 arranged that each ventilation zone B1, B2 and each vehicle seat 2 . 3 is within the detection range of the sensor.

If the vehicle F is a vehicle F which can not be moved in a partial or autonomous driving mode, the sensor for determining which ventilation zone B1, B2 is in is vehicle seat 2 . 3 is not required. In such a case, detected signals of a respective seat occupancy sensor 4 sufficient. When cooling, cold air L1 is released through the roof outlets 6.1 . 6.2 the vehicle interior 1 supplied because cold air L1 due to their higher density in the vehicle interior 1 goes down.

Around the sinking cold air L1 like a kind of air curtain in the area of the respective vehicle seat 2 . 3 to keep that in the seat cushion 2.2 . 3.2 arranged blower 5 activated.

By means of the blower 5 gets the cold air L1 through the ventilation holes 2.3 . 3.3 in the respective seat cushion 2.2 . 3.2 sucked, flows through the vehicle seat 2 . 3 and then exits the vents 2.4 . 3.4 the respective seat back 2.1 . 3.1 of the vehicle seat 2 . 3 out.

Includes the respective vehicle seat 2 . 3 like in the 2 seat ventilation openings represented by arrows 2.5 . 3.5 that the inmate on the vehicle seat 2 . 3 are facing, so can part of the through the vehicle seat 2 . 3 flowing air L1 from these seat ventilation openings 2.5 . 3.5 be led out.

The air L1 thus passes partially through a perforated, the occupant facing surface of the vehicle seat 2 . 3 out.

The through the ventilation holes 2.4 . 3.4 the respective seat back 2.1 . 2.3 and the seat vents 2.5 . 3.5 Outflowing air L1 heats up on its way, especially when flowing through the vehicle seat 2 . 3 , and is rising due to its lower density.

This results in the interaction between the Dachausströmöffnungen 6.1 . 6.2 , the blower 5 and the vents 2.3 . 2.4 . 3.3 . 3.4 a substantially closed flow roll, which is the vehicle seat 2 . 3 surrounds. The flow roll may also be referred to as an air roll, air curtain or air curtain.

This flow roll changes through the seat-fixed elements, ie by the blower 5 and the vents 2.3 . 2.4 . 3.3 . 3.4 when changing a position of the vehicle seat 2 . 3 in the vehicle interior 1 accordingly with.

An exemplary embodiment of a heating case, in particular a winter ventilation case, is in 3 shown in more detail.

3 shows a sectional view of the vehicle interior 1 where the vehicle seat 2 is positioned in the direction of travel of the vehicle F, whereas the other vehicle seat 3 is positioned opposite to the direction of travel.

For example, the vehicle F is moved in the semi-autonomous, autonomous or normal driving mode, in which the driver of the vehicle F has taken over the driving task.

In the heating case, warm air L2 is through the respective vehicle seat 2 . 3 associated Bodenausströmöffnungen 7.1 . 7.2 the vehicle interior 1 , in particular the vehicle seat 2 . 3 supplied in the corresponding aeration zone B1, B2.

The warm air L2 has a lower density than cold air L1, whereby the warm air L2 in the vehicle interior 1 goes up.

By reversing a direction of rotation of the respective seat cushion 2.2 . 3.2 arranged blower 5 opposite to the 2 described cooling case, the warm air L2 passes over the ventilation holes 2.4 . 3.4 in the seat backrests 2.1 . 3.1 in the appropriate vehicle seat 2 . 3 one.

The respective vehicle seat 2 . 3 is flowed through by the warm air L2 and over in the seat cushions 2.2 . 3.2 located ventilation openings 2.3 . 3.3 , so led out of this down.

By the suction effect of the bottom of the seat cushion 2.2 . 3.2 Outgoing air L2 becomes part of the bottom outflow openings 7.1 . 7.2 flowing warm air L2 towards the feet of one on the vehicle seat 2 . 3 seated inmates, which can increase well-being for the respective occupant. In particular in terms of comfort, this air supplied to the feet L2 should be relatively warm, which can be relatively easily realized by means of such a ventilation concept.

As in 3 can be shown in the respective seat cushion 2.2 . 3.2 a heating element 10 be arranged to pass through the seat cushion 2.2 . 3.2 led air L2 in addition to heat.

Even in the heating case results, as described in the cooling case, a largely closed flow roll to the respective vehicle seat 2 . 3 around, resulting in changing the position of the respective vehicle seat 2 . 3 amended accordingly.

In addition, a non-illustrated mixed case is possible in which the vehicle interior 1 both cold air L1 and warm air L2 through the roof outlets 6.1 . 6.2 as well as the Bodenausströmöffnungen 7.1 . 7.2 is supplied. In this case, an air conveying direction of the respective blower 5 be selected depending on load case.

For example, it can be selected that from the Bodenausströmöffnungen 7.1 . 7.2 outgoing warm air L2 towards the feet of the occupant on the vehicle seat 2 . 3 is guided, with an upper body with from the Dachausströmöffnungen 6.1 . 6.2 exiting cold air L1 is cooled.

The 4 to 7 show various arrangements of Dachausströmöffnungen 6.1 to 6.4 , wherein in each case a view of the vehicle roof 6 is shown.

The roof outlets can 6.1 to 6.4 perforated surfaces or outlets with fixed or adjustable lamellae, the different areas of the vehicle roof 6 can take.

In an in 4 The first arrangement shown are the respective Dachausströmöffnungen 6.1 to 6.4 each ventilation zone B1 to B4 arranged rectangular and preferably formed as perforated surfaces. As a result, flows from the roof outflow openings 6.1 to 6.4 leaking air L1 substantially perpendicular, ie in the direction of the vehicle vertical axis z down.

In a second arrangement, the in 5 is shown, are the Dachausströmöffnungen 6.1 to 6.4 in the area of the vehicle roof 6 arranged laterally, the air L1 preferably in the direction of the vehicle transverse axis y in the vehicle interior 1 flows. Due to the higher density of the cold air but then falls in the further flow again in the z direction down in the direction of the occupants located on the 2.3 seats.

In particular, the Dachausströmöffnungen 6.1 to 6.4 arranged in this case in the range of roof rails, not shown.

In an in 6 illustrated third arrangement of Dachausströmöffnungen 6.1 to 6.4 these are each arranged ventilation zone B1 to B4 such that the air L1 substantially in the direction of the vehicle longitudinal axis x in the vehicle interior 1 flows out and then in turn sinks later in the course of flow in the direction of the vehicle vertical axis z down.

Here are the Dachausströmöffnungen 6.1 to 6.4 arranged in particular in the area of roof cross members.

In 7 is a fourth arrangement of the roof outlets 6.1 to 6.4 in the sense of a so-called Dachmittenaussströmers shown, these with respect to the dimensions of a surface of the vehicle roof 6 are arranged centrally.

The roof outlets can 6.1 to 6.4 be arranged in a circle in its entirety, wherein in each case a quarter of the circle a range of each one ventilation zone B1 to B4 associated Dachausströmöffnungen 6.1 to 6.4 represents.

An air supply of in 5 to 7 illustrated Dachausströmöffnungen 6.1 to 6.4 can be done for example via air ducts not shown, which can be arranged in the region of the A, Covenant / C-pillars of the vehicle F.

In one possible embodiment of the roof outlets 6.1 to 6.4 outflowing air L1 added or added to moisture, in particular to increase comfort in the head region of the occupant in the respective ventilation zone B1 to B4. For example, by means of the addition of moisture, a risk of drying out of the mucous membranes in the head region of the occupant can at least be reduced. Alternatively or additionally, the occupant can be vitalized by the addition of moisture, which, for example, his attention can be increased.

In this case, the addition of moisture to the from the Dachausströmöffnungen 6.1 to 6.4 flowing air L1 permanently or temporally controlled.

An arrangement of floor outlet openings 7.1 to 7.2 of which in the 1 to 3 only two are shown, analogous to the Dachausströmöffnungen 6.1 to 6.4 be realized. The air is supplied via in the vehicle floor 7 arranged, not shown in detail air ducts.

QUOTES INCLUDE IN THE DESCRIPTION

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Cited patent literature

• DE 102015115066 A1 [0002]

Claims (10)

Method for operating a heating, ventilation and / or air conditioning system (K) of a vehicle (F) with at least one steerable outlet for introducing an air flow into a vehicle interior (1), characterized in that the vehicle interior (1) into a plurality of ventilation zones (B1 to B4) is divided and is detected in which ventilation zone (B1 to B4) is a vehicle seat (2, 3) with an occupant, wherein aeration of the respective ventilation zone (B1 to B4) depending on a in this Ventilation zone (B1 to B4) occupant is activated. Method according to Claim 1 , characterized in that the ventilation by means of stationary Dachausströmöffnungen (6.1 to 6.4) and / or stationary Bodenausströmöffnungen (7.1, 7.2) of the vehicle (F) and by means of vehicle-specific ventilation openings (2.3, 2.4, 3.3, 3.4) is performed. Method according to Claim 1 or 2 , characterized in that in response to an external climate by means of Dachausströmöffnungen (6.1 to 6.4) cold air (L1) or by means of Bodenausströmöffnungen (7.1, 7.2) warm air (L2) the vehicle interior (1) is supplied. Method according to one of the preceding claims, characterized in that the respective ventilation zone (B1 to B4) cold air (L1) in a cooling case automatically via the aeration zone (B1 to B4) associated Dachausströmöffnungen (6.1 to 6.4) is supplied. Method according to Claim 4 , characterized in that in the cooling case, the cold air (L1) by means of a vehicle seat (2, 3) arranged fan (5) sucked through the vehicle seat (2, 3) and guided out of the vehicle seat (2, 3). Method according to one of the preceding claims, characterized in that the ventilation zone (B1 to B4) warm air (L2) in a heating case automatically via the aeration zone (B1 to B4) associated Bodenausströmöffnungen (7.1, 7.2) is supplied. Method according to Claim 6 , characterized in that in the heating case, a direction of rotation of a vehicle seat (2, 3) arranged fan (5) is reversed with respect to a cooling case, said warm air (L2) through the vehicle seat (2, 3) directed and down from the vehicle seat ( 2, 3) is led out. Method according to one of Claims 2 to 7 , characterized in that from the roof outflow openings (6.1 to 6.4) led out air (L1) moisture is added. Method according to Claim 8 , characterized in that the addition of moisture is predetermined in time. Heating, ventilation and / or air conditioning system (K) of a vehicle (F), characterized in that a vehicle interior (1) in ventilation zones (B1 to B4) is divided, each ventilation zone (B1 to B4) fixed Dachausströmöffnungen (6.1 bis 6.4) and / or Bodenausströmöffnungen (7.1, 7.2) of the vehicle (F) and vehicle-mounted ventilation openings (2.3, 2.4, 3.3, 3.4) are assigned and a presence of an occupant on a vehicle seat (2, 3) can be detected, wherein a ventilation of Respective ventilation zone (B1 to B4) in response to an occupant in this ventilation zone (B1 to B4) is activated.

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