KR102136606B1 - Air-conditioning system for a motor vehicle - Google Patents

Abstract

The present invention relates to an air conditioning system (1) for automobiles with air transport and conditioning means. The air conditioning system (1) has a housing (2) comprising an air distributor (4), wherein the air distributor (4) is air outlets (4a, 4b, 4c) and two or more arranged to be perfusion capable of simultaneous flow It is formed with flow paths (8, 9). The air mass flows guided through the first flow path 8 and the second flow path 9, respectively, have different temperatures. At least one of the air outlets 4a, 4b, and 4c is formed with a separate mixing zone 19, and the mixing zone guides in the flow direction 13 through the first flow path 8 It has a first inlet (13a) for introducing the air mass flow and a second inlet (14a) for introducing the air mass flow guided in the flow direction 14 through the second flow path (9). The mixing zone 19 is formed for mixing such air mass flows. The inlets 13a, 14a are arranged such that air mass flows enter the mixing zone 19 in different directions.

Description

Air conditioning system for automobiles{AIR-CONDITIONING SYSTEM FOR A MOTOR VEHICLE}

The present invention relates to an air conditioning system for a vehicle equipped with means for transporting and conditioning air. The air conditioning system is provided with a housing including an air distributor, and the air distributor is formed with air outlets and two or more flow paths arranged to be flowable at the same time. The air mass flows through the first flow path and the second flow path, respectively, have different temperatures.

Due to the increasing number of technical parts in the case of vehicles, optimization related to the installation volume is required so that various desired functions can be absolutely guaranteed through a method of embedding these parts. For this reason, bulky air conditioning components, such as are known in stationary air conditioners in the form of mixing chambers, flow guides and vortex devices, for example, cannot be inserted into vehicles due to the tight space conditions.

Additional conditions for automotive air conditioning units to coordinate supplied air mass flows, and, in some cases, to split, and to guide individual air mass flows to different areas of the vehicle cabin, are directed to the various air outlets of the air conditioning unit depending on location and function. The need is to supply different air mass flows with temperature control. In this case, the supplied air mass flow passes through several heat exchangers, consequently, the air is cooled and dehumidified and, if necessary, heated again and then directed to the room. At this time, the air is blown into the leg room, for example, and through the openings in the dashboard to the cabin, and is also guided directly through the windshield side outlets to prevent fogging of the windshield or to remove frost.

In the case of air conditioners of this type, the air mass flow to be supplied to the vehicle compartment is divided into two partial air mass flows. The required air flow temperature is controlled by temperature flaps and different control mechanisms. In this case one partial air mass flow is guided and heated through a heat exchanger. At the same time, as the cold air, the second partial air mass flow passes by the heat exchanger. The two temperature air streams, which are subsequently differently regulated, are mixed to reach the target temperature required to achieve sufficient comfort of the air in the vehicle cabin.

The mixing process of cold air mass flow and hot air mass flow is very difficult because the flow path is very short, the flow rate according to the operation mode of the air conditioning system is complicated, and the temperature flap adjustment inside the housing is also not easy. . In addition, the air conditioning system takes a long time to mix the air mass flow.

Typically, air mass flow is supplied from one cavity mixing chamber to various air outlets of the air conditioner. However, due to the different requirements of the individual functions of the air outlets, different temperatures of the air mass flows have to be ensured, and this situation is achieved by additional inserts such as hot air channels or cold air channels. Different air mass flow temperatures at different outlets, such as legrooms, dashboards, and windshield side vents, are denoted as temperature stratification.

In addition, for example, in order to guide the harmonized air in the direction of the air outlet in the legroom, in addition to hot air channels or cold air channels, additional guiding devices, in particular air flaps formed on the housing side, are provided. In addition, the air outlets of the housings that match each other are usefully arranged for natural stratification of the air mass flows inside the housing as intended. The possibility of fluctuations in the housing and in the air guide inside the housing is necessary because of the complexity due to many factors of the recent development process which is very time consuming.

DE 101 47 114 A1 describes an air conditioning system for an automobile with an arrangement for distributing air inlet and air outlet regions and air mass flows to different vehicle compartments. The device includes a housing having two flow paths from the air inlet to the air outlet. The air guided along the first air flow path is heated. The temperature flap regulates the inflow of air from the first flow path and/or the second flow path to the air outlet region.

In the case of systems known in the prior art, these systems have very complicated additional elements, which require additional space and cause additional installation complexity and corresponding maintenance complexity as well as cost. In addition, the additional inserts result in increased back pressure in the air stream, which in turn leads to increased power demands as well as reduced power consumption and further reduction of the overall efficiency of the vehicle.

The object of the present invention, with respect to the temperature and the mixing time of the air to be supplied to the vehicle cabin, the optimum mixing of the air mass flows, as well as the optimum air temperature control according to the individual air outlet is implemented and the minimum The complexity is to provide an air conditioning system capable of temperature control. In this case, the air should be guided as intended, and the number of parts used, as well as the installation space demand for these parts, should be minimal. In addition, manufacturing, installation and maintenance costs incurred must also be minimal.

The above object is solved by an object having the features of the independent claims. Improvements are described in the dependent claims.

The above object is solved by the air conditioning system for a differential vehicle according to the present invention. The air conditioning device has a housing with means for conveying and conditioning air, in particular for cooling, dehumidifying and heating and an air distributor. The air distributor is formed with air outlets and two or more flow paths arranged to be flowable at the same time. The partial air mass flows through the first flow path and the second flow path, respectively, have different temperatures.

According to the concept of the present invention, one or more air outlets of the air outlets are formed with separate mixing zones. The mixing zone is guided in a defined flow direction through the first flow path or is guided in a defined flow direction through the first inlet and second flow paths for introducing the air mass flow exiting from the first flow path or the second flow path It has a second inlet for introducing the air mass flow flowing out from.

The mixing zone, preferably only assigned to the air outlet, is formed in this case for mixing air mass flows, in particular for mixing mass flows of different temperatures. The inlets of the mixing zone are arranged to introduce air mass flows into the mixing zone from different directions. The air mass flow exiting from the mixing zone in mixed form is then guided to the air outlet.

The air outlet is preferably formed with a flow guide device for closing and opening. In this case, the mixing zone is formed in front of the flow guide device of the air outlet when viewed in the flow direction of air.

According to one preferred embodiment of the present invention, the air distributor is formed with at least one windshield side air outlet, a legroom side air outlet, and an air outlet in the dashboard.

In this case, preferably, the leg room side air outlet and/or the windshield side air outlet and/or the air outlet in the dashboard may be formed with a separate mixing zone. In addition, a separate mixing zone may be assigned to each air outlet.

In this case, the air outlet may also mean a group of air outlets, and as a result, the air mass flow out of the mixing zone may be a specific air outlet such as a legroom side air outlet group, a windshield side air outlet group, or an air outlet group in a dashboard. Guided to the group.

According to a refinement of the invention, the mixing zone is formed inside the housing, by one or more first separating elements, in particular in a manner that is separate from the other mixing zones, and/or when forming multiple mixing chambers. have.

According to an alternative first embodiment of the invention, the air conditioning system comprises at least one second separation element, which separation element at least locally blocks the first flow path, and the first flow path and the second flow. It is arranged to guide air mass flows guided through the path as intended. In this case, the air mass flow guided through the first flow path flows around the second separation element, while the air mass flow guided through the second flow path flows along the second separation element.

The separating elements are each preferably formed as a separating wall, in particular a fixed separating wall. The second separating element can in this case also be formed as an air channel, in particular at least locally as a broadly closed air channel, in which the air channel is provided with a first flow path, in particular in the mixing chamber and in the inlet region. Cross.

According to a second alternative embodiment of the present invention, the air conditioning system comprises at least one second separation element, which separation element is arranged to guide the air mass flow guided through the second flow path as intended. have. In this case, the air mass flow guided through the first flow path flows past the second separation element, while the air mass flow guided through the second flow path flows along the second separation arc.

The second separating element in this case is preferably formed as a wide closed or at least partially open air channel. This air channel is preferably disposed in the wall area of the housing and projects into the volume closed by the housing or projects outward from the housing wall. At this time, the air channel may be formed in a manner that is opened toward the volume closed by the housing, and may have a U-shaped wall. The air mass flow guided through the first flow path preferably flows past the second separating element, e.g., flows over the open side, oriented towards the volume enclosed by the housing, without additional air resistance. Additional air resistance occurs, for example, when passing or overflowing the separation element, especially the air channel on the outer side.

The arrangement and formation of the separation elements and the inlets of the mixing zone allows the air mass flows of cold and hot air, guided through the flow paths, to be introduced into the mixing zone at different angles to ensure sufficient mixing within the mixing zone. As such, the flow directions of air mass flows upon entry into the mixing zone are oriented at a predetermined angle, in particular in the range of 30° to 150°.

The first inlet is preferably formed between the wall of the housing and the end face of the first separating element. In this case the flow cross section of the first inlet is limited by the wall of the housing and the end face of the first separating element. The second inlet is preferably formed as a cutout or opening inside the first separating element.

According to another preferred embodiment of the present invention, the mixing zone with the second inlet, the air mass flow guided in the flow direction defined through the second flow path or discharged from the second flow path flows straight into the mixing zone. It is arranged as much as possible.

In this case the mixing zone is preferably assigned to the air outlet of the legroom. Straight flow means that the air mass flow is not deflected and flows out of the second flow path and flows directly into the second inlet of the mixing zone, especially without direction fluctuations.

A further advantage of the present invention is that the air mass flow guided in the flow direction defined through the first flow path or discharged from the first flow path flows out of the first flow path and is then deflected at a deflection angle (α). The mixing zone with the inlet is arranged. At this time, the deflection angle α is determined between the flow direction of the air mass flow flowing out of the first flow path and the flow direction of the air mass flow flowing into the first inlet of the mixing zone.

In this case, the deflection angle α is preferably greater than 90°, particularly reaching 180°.

According to a further preferred embodiment of the present invention, a blower is formed as a means for conveying air, an evaporator of a refrigerant circulation system is formed as a means for cooling and/or dehumidifying air, and heating the air As a means for this, a heat exchanger is formed, and these means are arranged inside the housing.

According to a refinement of the present invention, the heating heat exchanger is arranged in a first flow path in a manner that occupies a cross-sectional space of the flow path. The contact surface between the heating heat exchanger and the wall of the flow path is preferably closed in a technically air-tight manner, so that the air mass flow guided through the first flow path is entirely guided through the heat transfer area of the heat exchanger.

The second flow path is preferably formed as a bypass bypassing the heat exchanger. Therefore, the air mass flow guided through the bypass does not contact the heat transfer area of the heat exchanger.

As a result, the flow paths formed inside the air distributor are: hot air air mass flow in the first flow path or air mass flow having a relatively high temperature, and cold air air mass flow in the second flow path or air mass having a relatively low temperature. The flow can be operated to be transported. The air mass flows guided through the flow paths are mixed with each other inside the mixing zone.

According to a further preferred embodiment of the invention, the flow paths are formed with flow guide devices so that the flow paths can be opened and closed independently of each other, in which case the air mass flow through the air distributor flows through the flow paths. It can be divided into partial air mass flows passing through.

The flow guide devices of the flow path and/or the flow guide devices of the air outlet are preferably arranged in such a manner that they are continuously rotatably supported around the axis of rotation, resulting in a flow cross-section and/or of the flow path. The flow cross-sections of the air outlet can be opened and closed continuously between 0% and 100%, respectively.

According to a refinement of the invention, the air distributor guides the air mass flow, such that it directs at least one partial air mass flow of the air mass flow guided through the first flow path from the outlet of the flow path into the mixing zone of the air outlet. It is equipped with a device for, in particular, a warm air channel. In this case mixing with the second air mass stream is prevented.

The air conditioning system according to the present invention has several other advantages:

-Optimal mixing is achieved in relation to the temperature of the air supplied to the occupants,

-Less time to mix air to be harmonized,

-In addition to minimizing control complexity, the air temperature is optimally adjusted according to the individual air outlet,

-Stable temperature stratification is realized,

-Installation space is reduced by minimizing the number of parts,

-The operating efficiency of the air conditioning system increases and

-Maximum comfort for passengers in the cabin is realized.

Further details, features and advantages of the present invention are revealed from the following detailed description of embodiments made with reference to the associated drawings. In the drawing:
1 shows a prior art automotive air conditioning system in cross-section, with one air inlet and several air outlets and a common mixing chamber followed by flow paths,
2a and 2b show a car air conditioning system in side view and perspective view with a single air intake and several air outlets and separate mixing zones for the flow paths and air outlets of the legroom, and
3A and 3B are graphs showing temperature fluctuations of the air mass flow of the air outlet of the legroom according to the position of the flow guide device for opening and closing the flow paths,
3A shows a graph of temperature fluctuations of the air conditioning system 1'of the prior art according to FIG. 1, and
3b shows a graph of the temperature fluctuations of the air conditioning system 1 according to FIGS. 2a and 2b.

1 shows a prior art air conditioning system 1'with a housing 2'having one air inlet 3 and an air distributor 4'having several air outlets 4a, 4b, 4c, in particular The air conditioner is shown in cross section.

The air conditioning system 1'is equipped with a blower (not shown in the figure) for sucking air through the air inlets 3 and transferring air through the housing 2'. The air mainly sucked in the horizontal direction (x) is subsequently guided through the evaporator region to the air distributor 4', where the air distributor is the windshield side air outlet 4a, the legroom side air outlet 4b and the dash It is formed with an air discharge port 4c in the board.

The air mass flow through the evaporator region is guided through the heat transfer region of the first heat exchanger (6) described as an evaporator of the refrigerant circulation system. When the heat transfer region of the evaporator 6 overflows, air may be cooled and/or dehumidified. The evaporator 6 is arranged in front of the air distributor 4'as viewed in the air flow directions 13 and 14.

The air mass flow that is then harmonized upon evaporation of the evaporator 6 can then be divided into an air mass flow flowing through the first flow path 8, in particular the hot air path and the second flow path 9, especially the cold air path. In this case, each of the air mass flows may all be guided to one of the flow paths 8, 9 or may be divided into two flow paths 8, 9 in proportion. When entering into the warm air path 8, the air mass flow is deflected from the horizontal direction (x) to the vertical direction (y).

The air mass flow guided through the warm air path 8 is heated when the second heat exchanger 7 and the heat exchanger overflow. The heated air mass flow can be divided continuously from now on, in which case the first partial air mass flow is introduced directly into the mixing chamber 10 and then, likewise, into the mixing chamber 10, cold air air mass Mixed with the flow, wherein the cold air mass flow is guided through the cold air path (9). The second warm air partial air mass flow may be guided directly through the warm air channel 12 to the air outlet, for example, the windshield side air outlet 4a.

The air conditioning system 1', in particular the housing 2'and the heat exchangers 6, 7 extend in the depth direction z.

The second flow path 9 is formed as a bypass bypassing the heat exchanger 7 disposed inside the first flow path 8. The second flow path 9 in this case guides the air cooled and/or dehumidified (as cold air and partial air mass flow) in the evaporator 6 around the heat exchanger 7. The air mass flow guided through the flow path 9 formed as a bypass bypassing the heat exchanger 7 does not fluctuate in temperature. The air mass flow guided through the first flow path 8 is all guided and heated via the heat transfer region of the heat exchanger 7. Therefore, inside the air distributor 4', in some cases, the pre-conditioned air mass flow in the evaporator 6 may be heated as at least a partial mass flow upon overflow of the heat transfer region of the heat exchanger 7.

The air outlets 4a, 4b, 4c are flow paths such as flow paths 8, 9 for guiding hot and cold air, respectively, and are connected to the cavity mixing chamber 10. In order to guide the already pre-conditioned air in the direction of specific air outlets 4a, 4b, 4c, a hot air channel inside the mixing chamber 10 can be arranged as a device 12 for guiding air mass flow. In this case, in particular, one or more warm air partial mass flows may be guided in the direction of the air outlet 4a of the windshield.

In the legroom side air outlet 4b, air mixed with warm air guided in the flow direction 13 through the first flow path 8 and cold air guided in the flow direction 14 through the second flow path 9 An air mass flow consisting of is supplied. The warm air and cold air are mixed in the mixing chamber 10 before being discharged through the air outlet 4b.

The air distributor 4'is different in the form of air flaps for closing or opening these air outlets 4a, 4b, 4c, in addition to the flow paths 8, 9 and the air outlets 4a, 4b, 4c. It is provided with flow guide devices (5a, 5b, 5c), in which case the air outlets can be appropriately controlled as needed.

The air mass flows through the hot air path 8 and the cold air path 9 are controlled with the help of a temperature flap 11 that closes or opens these flow paths 8, 9.

The very complex process of air guiding, splitting and conditioning inside the air conditioning system 1'makes it difficult to control the desired temperature of the air mass flow of the various air outlets 4a, 4b, 4c when operating in different operating modes.

2A and 2B , flow paths 8, 9 with one air inlet 3 and several air outlets 4a, 4b, 4c and separate mixing zones 19 for the air outlets 4b of the legroom The vehicle air conditioning system 1 with) is disclosed in a side view and a perspective view.

The air conditioning system 1 is also equipped with a blower (not shown in the figure) for transporting air through the housing 2 by inhaling air through the air intake 3. The sucked air is led through the evaporator region to the air distributor 4. The air distributor 4 is formed with an air outlet 4a of the windshield, an air outlet 4b of the legroom, and an air outlet 4c in the dashboard.

After flowing into the housing 2, the first heat exchanger acts as an evaporator of the refrigerant circulation system when flowing through the evaporator region disposed in front of the air distributor 4, when the air mass flow is viewed in the flow direction 13, 14 of the air It is guided via the heat transfer region of the group 6. At this time, the air can be cooled and/or dehumidified.

The harmonized air mass flow at the time of evaporator 6 overflow can then be divided into an air mass flow flowing through the first flow path 8, in particular the warm air path and the second flow path 9, especially the cold air path. In this case, each of the air mass flows may be guided to one of the flow paths 8 and 9, or may be divided into two flow paths 8 and 9 in proportion.

Upon overflow of the second heat exchanger 7 disposed in the warm air path 8 and formed as a heat exchanger, the air mass flow absorbs heat. The heated air mass flow can subsequently be divided continuously, in which case at least the first partial air mass flow is passed through the mixing chamber 10 to one or more mixing zones of the air outlet 4b. The second warm air partial air mass flow can be guided directly through the warm air channel 12 disposed inside the mixing chamber 10 to an air outlet, for example, the wind outlet air outlet 4a, or not shown in the figure As not, it can be guided to the air outlet 4c in the dashboard.

The second flow path 9 formed in this case as a bypass bypassing the heat exchanger 7 is the first flow path for the air cooled and/or dehumidified (as cold air and partial air mass flow) in the evaporator 6 (8) The heat exchanger 7 arranged in the inside is guided by turning. The air mass flow guided through the second flow path 9 does not fluctuate in temperature. The air mass flow, which passes through the first flow path 8 and is simultaneously guided through the heat transfer zone of the heat exchanger 7, is all heated. In some cases, the pre-conditioned air mass flow in the evaporator 6 can be heated when the heat transfer region of the heat exchanger 7 overflows.

In addition, the air distributor 4, like the air distributor 4'of the air conditioning system 1'according to FIG. 1, has several air flaps for closing or opening the air outlets 4a, 4b, 4c. And flow guiding devices 5a, 5b, 5c.

The air mass flows to be guided through the hot air path 8 and the cold air path 9 are controlled with the aid of flow guide devices 15 and 16 which close or open these flow paths 8 and 9. In this case, the flow guide device 15 is used to block or open the flow cross section of the first flow path 8 of the heat exchanger 7 disposed in the first flow path, and is also represented by the warm air channel 15 . By the flow guide device 16 of the second flow path 9, the air mass flow of the cold air flowing in the mixing chamber 10 direction can be changed. The flow guide device 16 in the cold air path is also represented as a cold air flap.

The flow guide devices 5a, 5b, 5c of the air outlets 4a, 4b, 4c and the flow guide devices 15, 16 can be suitably controlled as needed. When viewed in a cross section given by a plane unfolded in the horizontal direction (x) and in the vertical direction (y), the flow guide devices 5a, 5b, 5c, 15, and 16, which are usually formed in a straight plane, are each continuously rotated around the axis of rotation. It is rotatably supported and extends in the depth direction (z). Along with this, the flow paths 8, 9 and the air outlets 4a, 4b, 4c can also be closed and opened continuously between 0% and 100%, respectively.

Each of the individual air outlets 4a, 4b, 4c is assigned a separate mixing zone, which is illustratively shown in FIGS. 2a and 2b in relation to the mixing zone 19 of the legroom air outlet 4b.

The mixing zone 19 is formed in front of the flow guide device 5b of the legroom air outlet 4b, formed of an air flap as viewed in the flow direction 13, 14 of the air and has a first separation element 17, in particular separation It is separated from the mixing chamber 10 by a wall. In this case, the first separating element 17 is preferably fixedly formed, and basically in a plane spread across the vertical direction (y) and the depth direction (z) and the vertical direction (y) and the horizontal direction (x). Is extended.

The second separating element 18 is arranged to at least locally block the mixing chamber 10 and the warm air path 8 at the subsequent inlet and extend in a plane essentially spread across the horizontal directions (x, z). It is done. However, the second separation element can be formed as a closed air channel, also referred to as a cold air channel, wherein the cold air channel is oriented in the horizontal direction (x) and at least one air mass flows through the cold air path (9). To the mixing zone 19 as intended. The mass flow of air flowing through the warm air path 8 flows around the cold air channel.

The separating elements 17 and 18 can be formed, for example, on the wall of the housing 2 and in the middle of the housing 2.

According to an embodiment not shown in the figures, the second separating element is a wide closed or at least partially open air channel, which is formed in the wall region of the housing 2. In this case the air channels are arranged in such a way that they protrude into a volume closed by the housing 2 or protrude outward from the walls of the housing 2 in such a way as to expand the volume enclosed by the housing 2. It is done. The air channel can be formed in such a way that it is opened or closed in a volume direction surrounded by the housing 2. The open air channel has a U-shaped wall when viewed in cross section.

The air mass flow guided through the warm air path 8 flows past the second separation element formed as an air channel without, for example, additional air resistance that occurs when passing through or over the separation element.

In particular, the mixing chamber 19 separated from the mixing chamber 10 by the first separation element 17 has two inlets 13a, 14a. In this case, the first inlet (13a) is a heating heat exchanger (7) disposed in the warm air path (8) in order to flow the warm air heated in the case of overflow into the mixing zone (19) and the second inlet (14a) is an evaporator ( 6) Cooling and/or dehumidifying on overflow was provided to introduce cold air directed through the cold air path 9 into the mixing zone 19. The first inlet 13a is in this case formed between the wall of the housing 2 and the end face of the first separating element 17, while the second inlet 14a is opening or cutting inside the first separating element. It is formed as a part.

The cold air flows into the mixing zone 19 in the shortest flow path, basically in a straight line and flows in the horizontal direction (x) through the mixing chamber 10 along the second separation element 18. The cold air in this case is guided around the warm air channel 12, which is particularly evident in FIG. 2B. The second inlet 14a is arranged so that cold air flowing out from the cold air path 9 flows in immediately.

The warm air flowing through the warm air path 8 and the mixing chamber 10 and flowing into the mixing zone 19 turns the separation element 18 within the region of the second separation element 18 and guides it into the mixing chamber 10. do.

The warm air is also guided along a streamline 20 different from the straight line, as compared to the cold air. The warm air flowing into the first inlet 13a and basically flowing in the vertical direction y flows out from the warm air path 8 and is then deflected at a deflection angle α. Along with this, the second inlet 14a is arranged such that the cold air flowing out from the warm air path 8 is not immediately, but can be introduced through the shortest flow path.

The deflection angle of the warm air mass flow defined between the flow direction 13 of the warm air flowing from the warm air path 8 into the mixing chamber 10 and the direction of the warm air flowing into the first inlet 13a of the mixing zone 19 ( α) is greater than 90°. In the embodiment of FIG. 2B, the warm air is deflected within a deflection angle of about 180°.

By the arrangement of the separating elements 17, 18 and the inlets 13a, 14a, it is achieved that cold and warm air are introduced into the mixing zone 19 at different angles.

As a result, in the legroom side air outlet 4b, mixing of the hot air guided in the flow direction 13 through the first flow path 8 and the cold air guided in the flow direction 14 through the second flow path 9 An air mass stream of air is supplied. These hot and cold air are mixed inside the mixing zone 19 assigned to this air outlet 4b before being discharged through the air outlet 4b.

The mixing zone 19 and the mixing chamber 10 are separated by the arrangement of the first separation element 17. By the second separation element 18, the warm air flowing into the mixing chamber 10 from the warm air path 8 is not displaced by the cold air flowing out from the cold air path 9, but is directed toward the air outlet 4b directly. Is guaranteed. Otherwise, a large amount of warm air is supplied to the air outlet 4b. Mixing with cold air and controlling the temperature of the air mass flow in the leg-room side air outlet 4b may be difficult.

The hot and cold air flaps 16, which are assigned to the windshield side air outlets 4a, but not shown in the drawing, flow out of the hot air path 8 as necessary, and then guided through the hot air channel 12. The cold air guided through the flow cross section of the cold air path 9, which can be closed by, can be supplied. The hot air flowing through the first inlet of the mixing zone and the cold air flowing through the second inlet of the mixing zone are then allocated inside the mixing zone allocated to the windshield side air outlet 4a before being discharged through the air outlet 4a. Are mixed in.

The air outlet port 4c in the dashboard may also be provided with a mixing zone not shown in the drawing, and the mixing zone may include cold air flowing from the warm air path 8 and cold air that can be closed by a cold air flap 16 as needed. Cold air is guided through the flow cross-section of path 9. The air mass flows of the hot and cold air are guided as desired through the mixing chamber 10 to the mixing zone, for example by means of separation elements, in particular air channels. Again, the hot air flowing through the first inlet of the mixing zone and the cold air flowing through the second inlet of the mixing zone are within the mixing zone allocated to the air outlet 4c in the dashboard before being discharged through the air outlet 4c. Mix. The air outlet port 4c in the dashboard is also expressed as an air outlet port that is incident to the passenger or driver, because the air mass flow guided through the air outlet port 4c can be directly incident to the passenger.

Therefore, a separate separation zone is assigned to each of the air outlets 4a, 4b, and 4c. In this case, the mixing chamber 10 is divided into special regions, ie mixing zones. Air mass flows entering the mixing zones are guided as intended. In addition, the temperature of the air mass flows discharged through the air outlets 4a, 4b, 4c can be very simply controlled.

Figures 3a and 3b , respectively, according to the position of the flow guide device (11, 15, 16) and in addition to the division of the air mass flow through the hot air path (8) and cold air path (9) legroom air outlet (4b) ) Indicates the temperature fluctuation of the air mass flow. 3A shows the temperature fluctuation for the air conditioning system 1'of the prior art according to FIG. 1, and FIG. 3B shows the temperature fluctuation for the air conditioning system 1 according to FIGS. 2A and 2B. The positions of the flow guide devices 11, 15, 16 are each indicated by "% warm air".

In this case, temperature represents the maximum possible percentage of the temperature of the air mass flow. The air conditioning systems 1, 1'are operated in air outlets 4a in the at least partially opened dashboard and air outlets 4c in the legroom side at least partially opened, respectively.

The air sucked into the housing 2, 2'through the air intake 3 by the blower is guided through the heat transfer region of the first heat exchanger 6 acting as an evaporator, while simultaneously cooling and/or dehumidifying do. The air mass flow that is then harmonized upon evaporation of the evaporator 6 is the temperature flap of the air conditioning system 1'of FIG. 1, either by the position of the flow guiding device 11 or the flow guiding device of the air conditioning system 1 of FIG. 2A ( 15, 16) is divided into the air mass flow flowing through the hot air path 8 and the cold air path 9 by the positions of the 15).

The air mass flow guided through the warm air path 8 heats up when the heat transfer region of the second heat exchanger 7 acts as a heat exchanger. The condition of the air mass flow guided through the cold air path 9 as a bypass bypassing the heating heat exchanger remains unchanged.

The heated air mass flow guided through the warm air path 8 enters the mixing chamber 10 or mixing zone 19, is guided through the cold air path 9 and likewise mix chamber 10 or mixing zone ( 19) It is mixed with the air mass flow introduced into it.

In this example of operation, the air mass flow of the air outlet 4b of the legroom side of the air conditioning system 1'according to FIG. 1 reaches an average temperature of about 51°C at the position of the temperature flap 11 that is 50% warm air.

The air conditioning system 1 according to FIGS. 2A and 2B with separate mixing zones of separate outlets enables air mass flow temperature control of the corresponding outlets 4a, 4b, 4c. By massing and forming the mixing zone 19, in particular by the structure and arrangement of the separating elements 17 and 18 and the flow directions of the air mass flows formed by these separating elements, the air mass flows are solely the mixing chamber. Mixing is much more effective and better in the mixing zones 19 assigned to the air outlets 4a, 4b, 4c than mixing in (10).

In this case, the temperature mass flow of the air outlet 4b of the legroom side is 50% warm air, and the air conditioning system 1'according to FIG. 3a at the position of the flow guide devices 15, 16 of the air conditioning system 1 according to FIG. It reaches an average temperature much lower than that of its operation. The flow guiding device 16 of the cold air path 9 at the 30% position is arranged in such a way as to close the flow cross section of the cold air path 9 by 30%, while the flow guiding device 15 of the warm air path 8 ) Is arranged in such a way that the flow cross-section of this warm air path 8 is 30% open. Correspondingly, the flow guide devices 15, 16 at the 70% position are arranged in such a way that they close the flow cross section of the cold air path 9 by 70% and open the flow cross section of the warm air path 8 by 70%.

The formation of the mixing zones of the air outlets 4a, 4b, 4c in a separate manner makes it very easy to control the temperature of the individual air outlets 4a, 4b, 4c air mass flow. In addition, separate mixing zones reduce the mixing time of the cold and warm air mass flows and ensure a more stable temperature stratification.

1, 1': air conditioning system
2, 2': housing
3: Air intake
4, 4': air distributor
4a: windshield air outlet
4b: legroom air outlet
4c: Dashboard air outlet
5a: flow guide device, air flap of windshield air outlet (4a)
5b: flow guide device, air flap of the legroom air outlet 4b
5c: flow guide device, air flap of dashboard air outlet (4c)
6: First heat exchanger, evaporator
7: Second heat exchanger, heating heat exchanger
8: First flow path, warm air path
9: Second flow path, cold wind path
10: mixing chamber
11: flow guide device, temperature flap
12: device, warm air channel
13: direction of warm air flow
13a: first inlet
14: cold wind flow direction
14a: second inlet
15: flow guide device of the warm air path 8, warm air flap
16: First flow guiding device of cold air path 9, cold air flap
17: first separation element
18: second separation element
19: mixing zone of the legroom air outlet (4b)
20: wired
α: deflection angle in the direction of the warm air flow
x: horizontal direction
y: vertical direction
z: depth direction, horizontal direction

Claims (20)

It is provided with a housing (2) comprising an air distributor (4), wherein the air distributor (4) is air outlets (4a, 4b, 4c) and two or more flow paths (8, 9) arranged at the same time through flow ), and the air mass flows guided through the first flow path 8 and the second flow path 9, respectively, have different temperatures, and the first and second flow paths 8, 9 Air conditioning system (1) having means for transporting and conditioning air, including a common mixing chamber (10) for at least one of the air outlets (4a, 4b, 4c) by mixing air introduced from) ) As
One or more air outlets 4a, 4b, and 4c of the air outlets are formed with the common mixing chamber 10 and a separate mixing zone 19, and the mixing zone comprises a first flow path 8 The first inlet 13a for introducing the air mass flow guided in the flow direction 13 through and the second inlet for introducing the air mass flow guided in the flow direction 14 through the second flow path 9 (14a), and is formed to mix the above air mass flows, wherein the inlets 13a, 14a are mixed after the air mass flows pass through the common mixing chamber 10 in different directions. An air conditioning system (1), characterized in that it is arranged to flow into the zone (19). According to claim 1, The air outlet (4a, 4b, 4c) is formed with a flow guide device (5a, 5b, 5c) for closing and opening, wherein the mixing zone 19 is the flow of air An air conditioning system (1) characterized in that it is formed in front of the flow guide devices (5a, 5b, 5c) of the air outlets (4a, 4b 4c) when viewed in the directions (13, 14). The air distributor (4) according to claim 1, characterized in that the air distributor (4) is formed with at least one windshield side air outlet (4a), a legroom side air outlet (4b) and an air outlet (4c) in the dashboard. , Air conditioning system (1). The air conditioning system (1) according to claim 3, wherein the legroom side air outlet (4b) is formed with a separate mixing zone (19). The air conditioning system (1) according to claim 1, characterized in that each air outlet (4a, 4b, 4c) is formed with a separate mixing zone (19). The air conditioning system (1) according to claim 1, characterized in that the mixing zone (19) is formed to be separated by one or more first separation elements (17) inside the housing (2). 7. The method according to claim 6, wherein at least one second separating element (18) at least locally blocks the first flow path (8) and through the first flow path (8) and the second flow path (9). It is arranged to guide the air mass flows guided through as intended, wherein the air mass flow guided through the first flow path 8 flows around the second separation element 18, and An air conditioning system (1) characterized in that the air mass flow guided through the two flow paths (9) flows along the second separation element (18). The air conditioning system (1) according to claim 7, characterized in that the separation elements (17, 18) are formed as separation walls. 2. The method according to claim 1, wherein one or more second separation elements are arranged to guide the air mass flow guided through the second flow path (9) as intended, through the first flow path (8 ). Air conditioning, characterized in that a guided air mass flow flows past the second separation element, and a guided air mass flow through the second flow path (9) flows along the second separation element (18). System (1). 10. The air conditioning system (1) according to claim 9, characterized in that the second separating element is formed as an air channel. Air conditioning system (1) according to claim 6, characterized in that the first inlet (13a) is formed between the wall of the housing (2) and the end face of the first separating element (17). The air conditioning system (1) according to claim 7, characterized in that the second inlet (14a) is formed as a cutout inside the first separating element (17). The mixing zone (19) of claim 1, wherein the air mass flow guided in the flow direction (14) through the second flow path (9) flows straight into the mixing zone (19). An air conditioning system (1) characterized by being arranged with (14a). The first flow of the mixing zone (19) according to claim 1, characterized in that air mass flow guided in the flow direction (13) through the first flow path (8) flows out from the first flow path (8). The air conditioning system (1), characterized in that it is deflected at a prescribed deflection angle (α) between the flow direction of the air mass flow flowing into the inlet (13a) and the flow direction (13). The air conditioning system (1) according to claim 14, characterized in that the deflection angle (α) is greater than 90°. The heat exchanger (7) according to claim 1, wherein a blower as a means for conveying air, an evaporator (6) of a refrigerant circulation system as a means for cooling or dehumidifying the air, and a means for heating air are formed, The means is arranged inside the housing (2), air conditioning system (1). 17. The first flow path (8) according to claim 16, characterized in that the heating heat exchanger (7) is arranged in the first flow path (8) in such a way as to occupy a cross-sectional space of the flow path (8). ) All air mass flow guided through is guided through the heat transfer region of the heat exchanger 7, and the second flow path 9 bypasses the heat exchanger 7 bypass ), an air conditioning system (1). The flow path (8, 9) is formed with flow guide devices (15, 16) so that the flow paths (8, 9) can be opened and closed independently of each other, wherein the air The air conditioning system (1), characterized in that the air mass flow through the distributor (4) can be divided into partial mass flows passing through the flow paths (8, 9). 3. The flow of claim 2, wherein the flow cross-section of the air outlets (4a, 4b, 4c) or the flow cross-section of the flow paths (8, 9) can be opened and closed continuously between 0% and 100%, respectively. The air conditioning system (1), characterized in that the guide devices (5a, 5b, 5c, 15, 16) are respectively supported and arranged to be continuously rotatable about an axis of rotation. The air outlet (4a, 4b) according to claim 1, wherein the air distributor (4) divides a portion of the air mass flow guided through the first flow path (8) and bypasses the common mixing chamber. It is formed with a device 12 for guiding one of 4c), wherein the divided air mass flow is characterized in that mixing with the rest of the air mass flow is prevented, the air conditioning system (1).

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