KR101647253B1 - Device for guiding air of an air-conditioning system for a motor vehicle - Google Patents

Device for guiding air of an air-conditioning system for a motor vehicle Download PDF

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Publication number
KR101647253B1
KR101647253B1 KR1020150039144A KR20150039144A KR101647253B1 KR 101647253 B1 KR101647253 B1 KR 101647253B1 KR 1020150039144 A KR1020150039144 A KR 1020150039144A KR 20150039144 A KR20150039144 A KR 20150039144A KR 101647253 B1 KR101647253 B1 KR 101647253B1
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South Korea
Prior art keywords
air
heat exchanger
conditioning system
air conditioning
flow
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KR1020150039144A
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Korean (ko)
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KR20160034171A (en
Inventor
클라인 토르스텐
늘렌하우스 토마스
위즈먼 랄프
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한온시스템 주식회사
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00007—Combined heating, ventilating, or cooling devices
    • B60H1/00021—Air flow details of HVAC devices
    • B60H1/00035—Air flow details of HVAC devices for sending an air stream of uniform temperature into the passenger compartment
    • B60H1/00042—Air flow details of HVAC devices for sending an air stream of uniform temperature into the passenger compartment the air passing only one heat exchanger
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00007—Combined heating, ventilating, or cooling devices
    • B60H1/00021—Air flow details of HVAC devices
    • B60H1/00035—Air flow details of HVAC devices for sending an air stream of uniform temperature into the passenger compartment
    • B60H1/0005—Air flow details of HVAC devices for sending an air stream of uniform temperature into the passenger compartment the air being firstly cooled and subsequently heated or vice versa
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00321—Heat exchangers for air-conditioning devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00507—Details, e.g. mounting arrangements, desaeration devices
    • B60H1/00557—Details of ducts or cables
    • B60H1/00564—Details of ducts or cables of air ducts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/24—Devices purely for ventilating or where the heating or cooling is irrelevant
    • B60H1/26—Ventilating openings in vehicle exterior; Ducts for conveying ventilating air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00007—Combined heating, ventilating, or cooling devices
    • B60H1/00021—Air flow details of HVAC devices
    • B60H2001/00078—Assembling, manufacturing or layout details
    • B60H2001/00092—Assembling, manufacturing or layout details of air deflecting or air directing means inside the device
    • B60H2001/00321—

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

The present invention relates to an air guide device (15) for guiding air, in particular for introducing air into a heat exchanger (5), comprising at least one stationary fixing means (17) and at least one movable air guide means ). The device (15) is arranged in a state of being spaced apart from the heat exchanger (5) in the air flow direction (13). The air guiding means 18 automatically opens or closes the flow path 7 with respect to the frontal area of the heat exchanger 5 due to the pressure difference relating to the gravity and material properties of the movable air guiding means 18, And is connected to the fixing means 17 so as to be connected thereto. The present invention also relates to an air conditioning system (1) for an automobile having means for transporting, cooling and heating air mass flow. The air conditioning system 1 comprises a housing 2 having two or more flow paths 6 and 7 formed to communicate with a mixing chamber 8, an evaporator 4 disposed inside the housing 2, Wherein the first flow path 6 is formed as a bypass for the heating heat exchanger 5 disposed in the second flow path 7 . The air conditioning system is equipped with the air guidance device 15 described above in which the device 15 is connected to the heating heat exchanger 5 and in the flow direction 13 of the air mass flow, (5).

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an air-guiding apparatus for an air-

The present invention relates to an air guide apparatus, and more particularly to an air guide apparatus for introducing air into a heat exchanger. The apparatus comprises at least one stationary fixation means and at least one movable air guide means. The invention also relates to an automotive air conditioning system having means for transporting, cooling and heating air mass flow. The air conditioning system includes a housing having two or more flow paths formed to communicate with the mixing chamber, an evaporator disposed within the housing, and a temperature flap disposed in the mixing chamber region. In this case, the first flow path is formed as a bypass for the heating heat exchanger disposed in the second flow path.

In the case of automobiles, due to the increase in the number of technical components, optimization with respect to the total installation size is required so that the desired functionality can be ensured through the arrangement of the components. A further requirement of automotive air conditioning systems is to distribute and condition and optionally mix the supplied air mass flow as needed and to guide individual or mixed air mass flows into different areas of the vehicle. In this case, the supplied air mass flow passes through different heat exchangers so that the air is cooled, heated or cooled and dehumidified, and if necessary heated again before the air is guided to the vehicle. At this time, the air is blown into the vehicle room, for example, through the openings in the legroom and on the dashboard side, and also to mist-free the windshield or melt the windshield And is guided to the windshield through the windshield side outlets.

In the case of air conditioning systems of the same class, the air mass flow to be supplied to the passenger compartment can be divided into two partial mass flows by a flap, also referred to as a temperature flap. The required air flow temperature is regulated by the temperature flaps and the different control mechanisms. In this case, one partial air mass flow of the two partial mass flows is passed through the heating heat exchanger disposed in the lower region of the air conditioning system, and is heated. At the same time, the second part air mass flow as a cold wind passes by bypassing the heat exchanger. The two partial air mass flows with different temperatures are then mixed to reach the desired target temperature. By closing the hot air path where the heat exchanger is located at the first end position of the temperature flap, the total air mass flow fed to the air conditioning system passes through the evaporator and then bypasses the heat exchanger in the cold air path formed as bypass It passes. The air conditioning system operates in the cooling unit mode. When the temperature flap is positioned at the second end position, the total air mass flow fed to the air conditioning system passes through the heating heat exchanger. The cold air path is closed.

Fig. 1 shows a prior art air conditioning system 1 'with a temperature flap 9. Fig. The air conditioning system 1 'includes a fan, an evaporator 4 and a heating heat exchanger 5', not shown in the drawing for sucking and conveying air in the flow direction 13 through the air conditioning system 1 ' Wherein the fan, the evaporator 4 and the heating heat exchanger 5 'are disposed in the housing 2'. The housing 2 'includes three air outlets 3a, 3b and 3c and a mixing chamber 8. The air mass flow sucked by the fan and guided towards the evaporator 4 in the flow direction 13 is entirely passed through the area of the heat exchanger of the evaporator 4 and then divided into two paths 6 ' . The first flow path 6 ', also referred to as the cooling path 6', guides the air cooled and / or dehumidified in the evaporator 4 as a partial air mass flow around the heat exchanger 5 ' . In this case, the first flow path 6 'is arranged above the heating heat exchanger 5' in the vertical direction y of the air conditioning system 1 ', and the heating heat exchanger is arranged in the horizontal direction x, Is disposed within the flow path 7 '. The partial mass flow passing through the second flow path 7 'is entirely heated through the heat exchanger area of the heating heat exchanger 5'. Therefore, the flow path 7 'is also referred to as a hot air path 7'. The flow paths 6 ', 7' each lead to a mixing chamber 8. Partial air mass flows distributed to the flow paths 6 ', 7' again converge in the mixing chamber 8 and are conditioned before the conditioned air is supplied to the vehicle room through the individual air outlets 3a, 3b, 3c Mixed. The horizontal (x) arrangement of the heat exchanger 5 'requires a large space requirement.

The air mass flow through the evaporator 4 can be divided by the temperature flap 9 into the flow paths 6 ', 7' in the form of partial air mass flows. Depending on the position of the temperature flap 9, the partial air mass flows through the flow paths 6 ', 7', that is, the part of the total air mass flow passing through the air conditioning system 1 ' So that the temperature at the air outlets 3a, 3b, 3c can be controlled.

The windshield side air outlet 3a and the leg room side air outlet 3b can be closed or opened by the air flaps 10 and 11. [ The air outlet 3c is also referred to as a passenger side or a driver side outlet because the air mass flow guided through the air outlet 3c can be blown directly to the passengers. A temperature flap 9 formed in a double-leaf shape in a cross section given by a plane formed in the horizontal direction x and in the vertical direction y is rotatably supported about the rotation axis, ).

 In the arrangement of the temperature flaps 9 shown in FIG. 1, the air mass flow is guided to the vehicle room through the cold air path 6 'and the air outlet 3c in the air flow direction 14. The air flaps 12 are open. The hot wind path 7 'is closed at the outlet to the mixing chamber 8. The air conditioning system 1 'is operated in the cooling device mode.

Figure 2 shows an air conditioning system 1 "similar to the air conditioning system 1 'according to Figure 1. The housing 2" comprises a cold wind path 6 "with a temperature flap 9a, And the heating heat exchanger 5 "is arranged in the vertical direction y inside the hot air path 7 ". The hot air path 7 "can be closed by the temperature flap 9b in front of the heating heat exchanger 5" at the inlet and in the direction of air flow 13 therewith. The temperature flap 9b is arranged in the region of the hot air path 7 "having the smallest cross-section. The air conditioning system 1" is operated in the cooling device mode.

When the air conditioning system 1 ', 1 "operates in the cooling device mode and on the one hand the hot air paths 7' and 7" Air flows into the heat exchangers 5 ', 5' 'undesirably. Air mass flows flow into the hot air paths 7 ', 7 "and pass through the surface area of the heat exchangers 5', 5 ". In this case, the air is heated, which reduces the operating efficiency of the air conditioning systems 1 ', 1' ', thereby introducing unwanted heat into the passenger compartment.

In addition, air conditioning systems known in the prior art have members for opening and closing the hot air path on both sides of the hot air path in order to prevent air mass flow from passing through the heating heat exchanger or from being guided to the heating heat exchanger . However, such additional members with their associated driving devices and actuating members increase the complexity of the air conditioning system and the number of members, which again increases the cost of space, manufacturing and maintenance and system weight. The very long walls of the housing arranged in front of the heating heat exchanger in the flow direction cause high heat loss.

US 6 231 437 B1 discloses an air conditioning system for a vehicle having a mixing chamber having a refrigerant path, a hot air path in which a heating heat exchanger is disposed, and air outlets and mixing devices. One of the mixing devices is formed as a drum-like slider with a closed wall which closes the outlet of the cold air path at the "hot wind" position and the " Closes the outlet of the hot air path. The mixing device also has at least one auxiliary slider, for example a throttle flap, which is supported in front of the heating heat exchanger in the direction of air flow inside the hot air path.

KR 10 2012 0086426 A describes an air conditioning system for automobiles similar to the above-mentioned air conditioning systems, in which case end-swing individual flaps for closing or opening the cold air path and the hot air path are formed. The individual flaps close the hot air path where the heat exchanger is located at the inlet, i. E. In front of the heat exchanger in the flow direction. A flap which is opened or closed automatically due to a pressure difference is arranged in the switching part to the mixing chamber and the outlet of the hot air path. The end swinging individual flap means a rotatable flap, and the axis of rotation of the rotatable flap is formed at the outside edge. Such types of flaps exhibit inadequate linear characteristics between the movement of the flaps and the cross section of the flow of air mass flow. Also, since such a flap is located at a position where the flow cross section is the smallest in the warm air path, a very high back pressure is formed, which reduces the efficiency of operation of the air conditioning system. In addition, the seals of the flaps are located very close to the outlet of the evaporator, which leads to an inadequate distribution of air mass flows with an inadequate temperature distribution or a different temperature.

Thus, the systems known in the prior art have a reduced flow cross section at the outlet of the hot air path, so that on the one hand the air can not be optimally introduced into the entire area of the heat exchanger and on the other hand pressure losses occur. Due to the insertion of the rotating flaps, the air mass flow through the hot air path can not be controlled linearly at the flap position.

EP 1 457 363 B1 discloses an automotive air heating module having an air inlet and an air outlet, a warm air path extending between said air inlet and outlet and a cold air path and a closure member. A heating heat exchanger is disposed inside the warm air path. The cold air path is formed as a bypass for circulating the heating heat exchanger. The closure member is used to at least partially block the paths. The air heating module also has a flow control structure with a front side and a back side, the back side being arranged parallel to the first surface of the heat exchanger, the first side being located on the open end side of the heating channel I'm headed. The flow control structure has a plurality of through openings leading from the front side to the back side and prevents the air flow to be conditioned in the cooling device mode from flowing directly into the heating heat exchanger. Contact of the heating heat exchanger with the air mass flow is reduced. The heat of the heat exchanger is transferred to the air mass flow less than if it had no additional flow control structure. The hot wind path can not be closed by the flow control structure.

The air conditioning systems known in the prior art also have additional components on the device which require additional space and which, in addition to cost, result in additional complexity and corresponding maintenance costs during assembly. In addition, additional inserts restrict and constrict flow paths, resulting in increased pressure loss in the air flow, which again increases power requirements and energy consumption, thereby reducing efficiency in air conditioning systems and automobiles as a whole.

An object of the present invention is to provide an improved air conditioning system and an air guide apparatus, particularly an air guide apparatus for an automobile air conditioning system, which are designed in a compact and space-saving configuration, without members having drive devices causing additional costs . The air guiding device and the air conditioning system must be capable of operating with minimal pressure loss and low back pressure of the air mass flow, especially low back pressure in the hot air path of the air conditioning system. The air conditioning system should also be configured so that the distribution of air mass flows is as linear as possible. The total area of the heat exchanger must be effectively utilized for heat transfer to the air.

This problem is solved by objects having the features of the independent claims. Improvements are set forth in the dependent claims.

The above object is solved by an air guiding apparatus according to the present invention for introducing air into an air guiding apparatus, in particular, a heat exchanger according to the present invention. The apparatus comprises at least one stationary fixation means and at least one movable air guide means.

According to the concept of the present invention, the air guide apparatus is disposed in front of the heat exchanger at intervals in the air flow direction. In this case, due to the pressure difference in the direction of the air flow direction as compared with the side opposite to the air flow direction in relation to gravity and material characteristics of the movable air guide means, the frontal area of the heat exchanger face area (meaning a cross-sectional area effective for the flow of air) is automatically opened or closed in accordance with the flow conditions. Therefore, the device can be operated without additional drive, operation control member or control means. The material properties in particular mean flexural strength or elastic deformation. In this case, the bending strength depends on the elastic characteristics of the material to be manufactured and the structure of the air guide means.

According to a preferred form of the invention, the movable air guide means is arranged in such a way that it is pivotably supported on the stationary fixing means. In this case, the air guide means is pivoted about a rotation axis passing through the fixing position of the air guide means fixed to the fixing means and aligned in the depth direction, and opens the perfusion opening or closes the perfusion opening according to the position. The depth direction preferably proceeds perpendicular to the main flow direction of the air or the horizontal air flow into the heat exchanger. The perfusion opening preferably has a rectangular cross-section. Alternatively, the perfusion opening may have a circular, elliptical, polygonal or other shape of a cross-section. The air guide means each have a shape conforming to the cross-sectional shape of the perfusion opening.

The rotary shaft preferably passes through the upper surface apex of the movable air guide means. The upper surface also refers to the side of the air guide means aligned vertically in the vertical direction in which gravity acts. As a result, gravity directed downward from above acts as a lower portion in the fixed position of the air guide means fixed to the fixing member.

According to a further preferred form of embodiment of the invention, the stationary fixing means are arranged in a planar alignment manner such that the plane is parallel to the plane of the frontal area of the heat exchanger. Thus, the stationary fixation member is aligned parallel to the frontal area of the heat exchanger.

According to a preferred embodiment of the present invention, at least one stationary fixing means and at least one movable air guide means are formed in a strip shape. In this case, the strips have a rectangular area having a first longitudinal side, a second longitudinal side and two narrow sides. The longitudinal side surfaces and the narrow side surfaces are arranged to face each other. The spacing between the longitudinal sides corresponds to the width of the individual strips, and the spacing between the narrow sides corresponds to the length of the individual strips. The stationary fixing means and the movable air guiding means are arranged such that the longitudinal sides are preferably aligned in the horizontal depth direction.

According to an improvement of the invention, the first longitudinal side of the movable air guiding means is arranged on the first longitudinal side of the securing means in such a way that it is connected with the securing means. The air guide means is pivotally supported about its first longitudinal side. Wherein the direction of the first longitudinal side means a rotation axis through which the air guide means can rotate or swivel.

The rectangular area of the air guide means is disposed in such a manner that it is preferably in a planar alignment in the closed state of the apparatus, and the plane is likewise advanced parallel to the plane of the front surface area of the heat exchanger. The air guiding means therefore preferably combines with the securing means to form a primarily coplanar surface. Depending on an alternative formative example and depending on the shape of the flow cross-section of the flow-through opening, such as a rectangle, circle, ellipse, polygon or other similar shape, and the shape of the air guide means conforming to the shape of the flow cross-section, It is also possible to have other shapes such as a shape, a convex shape or the like.

The stationary fixing means and the movable air guiding means extend in a combined manner, preferably over the entire effective flow area, and the effective area preferably corresponds to the frontal area of the heat exchanger.

In a further preferred form of the invention, the air guide device is formed by a plurality of stationary fixing means and a plurality of movable air guide means coinciding with the plurality of stationary fixing means. In this case, the stationary fixing means and the movable air guide means are alternately arranged in the vertical direction. In addition, the stationary fixing means and the movable air guide means are preferably alternately arranged in the horizontal direction.

According to a preferred embodiment of the present invention, the air guide means are arranged in a closed state of the device such that the second longitudinal sides opposite to the first longitudinal sides are arranged in a manner in contact with the fixing member in the second longitudinal side region of the fixing members Respectively. According to an alternative exemplary embodiment and in accordance with the formation of air guide means conforming to the flow cross-sectional profile of the perfusion aperture and the flow cross-sectional profile of this perfusion aperture, such as rectangle, circle, ellipse, polygon or similar, Contact the fixation member in a manner that closes the perfusion opening at the side edges that limit the perfusion opening. In this case, the air guide means abuts against the fixing members on the side of the air guide means, which faces the front face area of the heat exchanger in the horizontal direction.

The air guiding means and the fixing members are preferably formed of a low thermal conductivity material to minimize heat transfer from the air guiding device to the air mass flow flowing along the air guiding device.

The above object of the present invention is also solved by an air conditioning system for an automobile according to the present invention, which has means for transporting, cooling and heating an air mass flow. The air conditioning system includes a housing having at least two flow paths formed to communicate with the mixing chamber. The mixing chamber is thus formed at the ends of the flow paths or outlets of the flow paths in the flow direction of the air mass flow. The air conditioning system also includes a temperature flap disposed in the evaporator and mixing chamber region disposed within the housing, wherein the first flow path is formed as a bypass of the heating heat exchanger disposed in the second flow path . The evaporator is formed in front of the individual inlets leading to the flow paths so that the air mass flow can be distributed according to the operating mode of the air conditioning system after passing through the evaporator.

According to the concept of the present invention, the air conditioning system is equipped with the above-described air guiding device. In this case, the air guide device is disposed in front of the heating heat exchanger in combination with the heating heat exchanger and in the flow direction of the air mass flow.

In this case, the air guide device is designed so that the air mass flow through the evaporator and at the same time the conditioned air mass flow does not reach the frontal area of the heating heat exchanger, and in some cases the heat is transferred from the heating heat exchanger to the air mass flow It is used to close two flow paths. A temperature flap disposed within the mixing chamber is used to close the flow paths at the outlet. By preventing heat transfer from the heat exchanger to the air mass flow, undesired heat transfer to the vehicle body is prevented or minimized. The air conditioning system does not incur the additional cost of material and / or manufacturing as compared with the conventional air conditioning system by using the above-described air guiding device. In addition, no additional actuators are required, such as actuators or actuating members. In addition, the air conditioning system has significantly fewer extensions in the horizontal direction, i. E. In the vehicle direction, and is very compact due to the minimization of the required space.

The air guide apparatus according to the present invention is preferably arranged in a manner supported by the heat exchanger. According to one alternative embodiment, the air guiding device is connected to the housing of the air conditioning system in a supporting manner.

According to one improvement of the present invention, the temperature flap supported rotatably about the rotation axis has a closing member on the arc. The closure members each extend over the depth of the flow path to be closed such that the flow paths can be proportionally or completely closed depending on the rotational position of the temperature flap and the air mass flow through the evaporator is proportional to the partial air mass And may be distributed as a flow into the flow paths.

In summary, the device according to the present invention for reducing heat absorption through air mass flow in an air conditioning system operating in a cooling device mode has several advantages:

- Simple construction required for high efficiency operation of air conditioning system,

By arranging the evaporator and the heat exchanger compactly at a minimum distance between the heat exchangers or at a small distance between the heat exchangers, the heat exchanger can be arranged immediately behind the evaporator in the direction of air flow, The extremely compact housing implementation, which minimizes the space required for the air conditioning system,

The use of a simple double flap as a temperature flap, the formation of additional temperature flaps with additional driving devices and operation control elements is unnecessary, which minimizes the manufacturing cost of the air conditioning system,

- a minimum pressure loss implementation in the hot air path, which causes a minimal back pressure in the hot air path, thereby allowing the cold air path to flow to a relatively larger flow cross section and allowing the maximum cold air mass flow to pass due to the relatively greater linearity And

- very low backpressure of the air mass flow after the evaporator coarse when the hot wind path is closed, which increases the linearity,

- minimization of heat absorption by air mass flow, and

- Due to the back pressure generated by itself or due to the flexibility of the flow conditions, the air guide can close the air flow to the hot air path and also to the heating heat exchanger.

Additional details, features and advantages of the formation examples of the present invention are set forth in the following description of embodiments with reference to the accompanying drawings.

1 is a prior art air conditioning system having a bifurcated temperature flap and a horizontally disposed heating heat exchanger,
2 is a prior art air conditioning system having a temperature flap and a vertically oriented heating heat exchanger disposed in a cold air path and a warm air path, respectively,
3 is an arrangement of a heating heat exchanger having an air guide for guiding air and preventing undesired heat transfer,
Fig. 4 is an air conditioning system with an arrangement according to Fig. 3, in which case the heating heat exchanger is arranged in a vertical direction in the warm air path,
Figure 5 is an arrangement of a heating heat exchanger having an air guide for guiding air and preventing undesired heat transfer when the air conditioning system is operating in the cooling system mode,
6 is an arrangement of a heating heat exchanger having an apparatus for guiding air in an open state when the air conditioning system operates in a heat pump mode or a reheat mode.

3 shows an air guiding device 15 having a holding member 16, fixing members 17 and movable air guiding means 18 for preventing undesired heat transfer to the air mass flow in the heating heat exchanger 5 The arrangement of the heat exchanger 5, in particular the heat exchanger 5, is shown. The air guiding device 15 is automatically closed in accordance with the flow conditions of the air mass flow as a result of the back pressure generated by itself or due to the desired formation of the movable air guiding means 18. The expression "automatically" herein means that the air guide device 15, in particular the movable air guide means 18, without additional drive or other means, interrupts the air mass flow through or through the air mass flow ≪ / RTI >

The air guiding device 15 has a holding member 16 and a fixing member 18 in which the device 15 is arranged in such a way that it is supported by the holding member and fixing members in the heat exchanger 5 . The holding members 16 formed in a closed planar shape are generally vertically aligned with respect to the frontal area plane of the heat exchanger 5 by the longitudinal sides 16a and 16b and the first longitudinal sides 16a are connected to the heat exchanger 5) region or the upper outer edge region of the front face area. The holding member 16 has a narrow strip shape with a rectangular bottom surface and the bottom surface is arranged in a plane formed by the horizontal direction x and the depth direction z. Such strip formation is related to the ratio of the length formed in the depth direction z to the width formed in the horizontal direction x, in which case the length is greater than the width. The holding member 16 fixed to the heat exchanger 5 extends over the entire depth of the heat exchanger 5. The narrow sides 16c of the holding member 16 are in contact with the housing such that contact edges which do not pass air between the housing and the holding member 16 and between the holding member 16 and the heat exchanger 5 Respectively. The fixing members 17 formed in a closed planar shape are arranged parallel to the plane of the front surface area of the heat exchanger 5 and are generally spaced apart from the heat exchanger 5 by the width of the holding member 16, (5). The fixing members 17 have a narrow strip shape whose bottom surface is rectangular, and the bottom surface is arranged in a plane formed by the vertical direction (y) and the depth direction (z). The narrow strip formation as described above is related to the ratio of the length formed in the depth direction z to the width formed in the vertical direction y, in which case the length has a size greater than the width. The fixing members (17) extend over the entire depth of the heat exchanger (5). The narrow side surfaces 17c of the fixing members 17 are in contact with the housing such that contact edges are formed between the housing and the fixing members 17 so that little air passes through them. The holding member 16 is preferably hermetically connected to the fixing member 17 at the second longitudinal side 16b opposite the first longitudinal side 16a. In this case, the fixing member 17 is coupled to the holding member 16 by the second longitudinal side surface 17b.

According to an alternative embodiment, the holding member 16 and the fixing members 17 are fixed in such a way that they are supported by the housing, resulting in a load-bearing connection to the heat exchanger 5 Need not be formed.

Movable air guiding means 18 are arranged on the first longitudinal sides 17a of the fixing members 17 aligned in the vertical direction y, And is rotatably supported on the first longitudinal side surfaces 18a facing the first longitudinal side surfaces 18a. The fixing members 17 and the movable air guiding means 18 are connected to each other through the first longitudinal side surfaces 17a and the first longitudinal side surfaces 18a so that the air guiding means 18 are arranged in the vertical direction y, (In Fig. 3) due to the gravity acting on the wrist. The air guide means 18 are rotatable or foldable in the pivot direction 19 about a rotation axis passing through the connection of the longitudinal side surfaces 17a and longitudinal side surfaces 18a, respectively, and are therefore also referred to as flap members. Accordingly, the second longitudinal sides 18b of the air guide means 18, which face the first longitudinal sides 18a, are formed in an unfixed or free state.

In the closed state of the air guide device 15, the air guide means 18 are arranged such that the second longitudinal sides 18b facing the first longitudinal sides 18a are in contact with the second longitudinal sides 17b of the fixing members 17, (Y) so as to abut on the fixing members (17) in the region where the fixing members (17) are located. At this time, the air guide means 18 abuts against the fixing members 17 on the side facing the front face area of the heat exchanger 5 in the horizontal direction (x).

The air guide means 18 are formed longitudinally or in the depth direction z so that the narrow sides 18c are each formed with a gap with respect to the housing. Therefore, the air guide means 18 have a size smaller than the fixing members 17 in the longitudinal direction in order to ensure the movability. The gap corresponds to the gap to the housing and the possible movement with respect to the fixed housing.

The air guiding means 18 and the fixing members 17 are formed of a material with a low thermal conductivity so that they are transferred to the air collected in the gap between the front face area of the heat exchanger 5 and the device 15 Heat is no longer transferred to the device 15 or such heat transfer is minimized. Thus, additional heat transfer to the air mass flow to be heated and conditioned by the device 15 is also minimized.

The frontal area of the heat exchanger 5 and the gap between the devices may not necessarily be closed by airtightness. In addition to the gaps between the air guiding means 18 and the housing, in particular the gaps for the mobility of the air guiding means 18, there is formed an additional perfusion opening 20 which can be opened or closed. The arrangement of the fixing members 17 and the air guide means 18 and the vertical alignment of the device 15 with respect to the frontal area of the heat exchanger 5, which are substantially vertical in the closed state of the device 15, The perforation opening has an area that substantially coincides with the holding member 16 formed in the plane extending in the horizontal direction x and the depth direction z.

Fig. 4 shows an air conditioning system 1 having an arrangement according to Fig. 3 and a heat exchanger 5 arranged in a vertical direction y in a hot air path 7. The air conditioning system 1 includes a fan, an evaporator 4 and a heating heat exchanger 5 (not shown in the drawing) for sucking and conveying air in the flow direction 13, 14 through the air conditioning system 1 Wherein the fan, the evaporator 4 and the heating heat exchanger 5 are arranged in the housing 2. The housing 2 includes three air outlets 3a, 3b and 3c and a mixing chamber 8. All of the air mass flow delivered by the fan passes through the heat exchanger area of the evaporator 4 and then is proportionally distributed to the flow paths 6,7. The first flow path 6, also referred to as the cooling path 6, guides the air cooled and / or dehumidified in the evaporator 4 around the heat exchanger 5 as a partial air mass flow. In this case, the first flow path 6 is formed on the heating heat exchanger 5 in the vertical direction y of the air conditioning system 1, and the heating heat exchanger is disposed in the second flow path 7 . The partial mass flow passing through the second flow path 7 is entirely passed through the heat exchanger area of the heat exchanger 5 and is heated. Therefore, the flow path 7 corresponds to the hot air path 7.

The air mass flow through the evaporator 4 can be distributed by the temperature flaps 21 to the flow paths 6, 7 in the form of partial air mass flows. The temperature flap 21 formed in a partial cylinder shape in a cross section given by a plane formed in the horizontal direction x and in the vertical direction y includes a closing member 21a on the arc and is rotatably supported And extends in the depth direction z. In this case, the closure member 21a extends over the entire depth of the flow path 5, 6 to be closed, respectively. Regarding the air flow directions 13 and 14, the front surface area of the closing member 21a is formed in a convex shape. Depending on the rotational position of the temperature flap 21 with the closing member 21a, the flow paths 5, 6 are proportionally or completely closed. By virtue of the formation of the temperature flaps 21, a high linearity is achieved between the flow cross-section adjustment of the flow paths 5, 6 to the perfused air mass flow or between the position and the release.

Air mass flow at the arrangement of the temperature flaps 21 shown in Fig. 4 is guided to the vehicle room through the cold air path 6 and the air outlet 3c in the air flow direction 14. The hot air path 7 is closed at the outlet to the mixing chamber 8. The air conditioning system 1 is operated in the cooling device mode.

The hot air path 7 can be closed in front of the heating heat exchanger 5 having the air guiding device 15 at the inlet and in the flow direction 13 of the air with it. Wherein the device 15 extends over the entire frontal area of the heat exchanger 5. When the air conditioning system 1 operates in the cooling device mode, the device 15 prevents air from being introduced into or supplied to the front surface area of the heating heat exchanger 5. Although the air is introduced into the clearance between the front face area of the heating heat exchanger 5 and the device 15, the heat emitted from the heating heat exchanger 5 stays in the gap without being discharged as air mass flow and flowing into the passenger compartment have. The device 15 closes the hot air path 7 at the inlet. At the same time, the hot air path 7 is closed by the temperature flap 21 at the outlet and at the inlet to the mixing chamber therewith. Air does not pass through the hot air path 7 or into the hot air path 7 when the air conditioning system 1 operates in pure cooling mode.

Due to the formation of the device 15 arranged in front of the heating heat exchanger 5 in the direction of air flow, the heating heat exchanger 5 is arranged immediately, i.e. very closely, and with a small distance to the evaporator 4 .

5 shows a heat exchanger 5 having an air guiding device 15 for guiding air in the closed state and preventing undesired heat transfer when the air conditioning system 1 operates in the cooling device mode, Arrangement of machine 5 is presented.

The air guide device 15 is closed and prevents the air mass flow discharged, cooled and / or dehumidified from the evaporator 4 from causing a superfluous phenomenon on the high temperature surface of the heat exchanger 5. The heating heat exchanger 5 is, for example, perfused by a coolant of an engine cooling circuit, which can carry the engine heat to the air conditioning system 1. In this case, the hot coolant can always be guided through the heat exchanger 5. However, in order to prevent heat transfer to the air conditioning system 1, for example, when operating in the cooling device mode, no air mass flow is introduced into the heat exchanger 5.

A low pressure is generated in the front face area as a result of the flow velocity of the air mass flow in the flow direction 13 to the cold air path 7 and the air mass flow passing therethrough the front face area of the device 15. [ At the same time, at the back of the device 15 towards the front face area and towards the heating heat exchanger 5, or at the gap between the device 15 and the heating heat exchanger 5, A higher static pressure 22 is formed than in the frontal area of FIG. The flexible air-moving means 18 are automatically pressed against the fixing members 17 due to the difference in pressure between the front face of the device 15 and the rear face. At this time, the air guide means 18 may be formed with a small wall thickness. The wall thickness of the air guiding means 18 is designed with individual flow conditions.

It is preferable that air guiding means (not shown) is provided for the flow condition having a relatively larger static pressure 22 at the side of the device 15 facing the heating heat exchanger 5 or at the gap between the device 15 and the heating heat exchanger 5 18 are formed of a more rigid and less inelastic material or of a thicker wall thickness so that they are discharged, cooled and / or cooled by the evaporator 4 through the gap between the device 15 and the heating heat exchanger 5, Or the introduction or perfusion of the dehumidified air mass flow and the heating of the low temperature air mass flow can be prevented. In this case, however, the air guiding means 18 are arranged in such a way that the device 15 can be moved in the direction of rotation 19 So as to be opened to the outside. The static pressure at the front face area of the device 15 rises, for example, when the air conditioning system 1 operates in the heat pump mode or the reheating mode. When operating in the heat pump mode or the reheating mode, the air mass flow is at least partially guided through the hot air path 7, and the air mass flow is heated as a result of the superfluous phenomenon in the heat exchanger area of the heat exchanger 5 . At this time, due to the movement of the temperature flap 21, the cold air path 6 is at least partly closed and the hot air path 7 is at least partly opened.

6 shows an arrangement of a heating heat exchanger 5 having an apparatus 15 for guiding air in an open state when the air conditioning system 1 operates in a heat pump mode or a reheating mode.

When the air conditioning system 1 is operated in the heat pump mode or the reheating mode, the cold air path 6 is closed, so that the static pressure increases in the front surface area of the apparatus 15. By thus increasing the pressure in the frontal area of the device 15 the air guide means 18 are automatically opened and the inlet of the hot air path 7 in the form of a gap 23 is opened, Is guided into the hot air path (7) through the heat exchanger (23) and heated in the heat exchanger area (5) in the event of the occurrence of a swirling phenomenon. In this case, the gaps 23 are created between the air guide means 18 and the fixing members 17 by moving the air guide means 18 in the revolving direction 19. After the superheating of the heating heat exchanger 5, the air mass flow is guided in the flow direction 24 through the hot air path 7.

1, 1 ', 1 ": air conditioning system
2, 2 ', 2 ": housing
3a: windshield side air outlet
3b: leg room side air outlet
3c: Dashboard side air outlet
4: Evaporator
5, 5 ', 5 ": heat exchanger, heat exchanger
6, 6 ', 6 ": flow path, cold path
7, 7 ', 7 ": flow path, hot air path
8: Mixing chamber
9, 9a, 9b: temperature flap
10: Air flap of the windshield side air outlet 3a
11: An air flap on the leg room side air outlet 3b
12: An air flap on the dashboard side air outlet 3c
13: direction of air flow
14: direction of flow of air passing through the cold air path 6
15: Device for guiding air
16: Holding member
16a: a first kind side surface of the holding member 16
16b: the second longitudinal side of the holding member 16
16c: a narrow side of the holding member 16
17: Fixing member
17a: a first longitudinal side surface of the fixing member 17
17b: the second longitudinal side surface of the fixing member 17
17c: the narrow side of the fixing member 17
18: Air guide means
18a: a first longitudinal side of the air guiding means 18
18b: the second longitudinal side of the air guide means 18
18c: the narrow side of the air guide means 18
19: the direction of rotation of the air guide means 18
20: Perforation opening
21: Temperature flap
21a: closing member
22: static pressure
23: Gap
24: direction of flow of air passing through the hot air path 7
x: horizontal direction
y: vertical direction
z: depth direction

Claims (12)

1. An automotive air conditioning system (1) having means for transporting, cooling and heating an air mass flow,
The air conditioning system 1 includes a housing 2 having two or more flow paths 6 and 7 formed to communicate with a mixing chamber 8, an evaporator 4 disposed inside the housing 2, Wherein the first flow path (6) is formed as a bypass for the heat exchanger (5) disposed in the second flow path (7) In an air conditioning system,
An air guide device 15 for introducing air into the heat exchanger 5 is formed,
The device (15)
At least one stationary fixation means (17) and at least one movable air guide means (18)
Is arranged in a state of being spaced apart in front of the heat exchanger (5) in the air flow direction (13), and
The front face area of the heat exchanger 5 due to the gravity acting on the movable air guide means 18 and the pressure difference between the upstream and downstream of the movable air guide means 18 generated by the operation of the temperature flap 21 characterized in that the air guide means (18) is formed in such a way that the air guide means (18) is connected with the fixing means (17) so as to automatically open or close the flow path (7)
Air conditioning system. The method according to claim 1,
Wherein said movable air guide means are arranged in such a way that they can be pivotally supported on said stationary fixing means and said air guide means are arranged in such a way that they pass through a fixed position and are aligned Characterized in that it is pivoted about an axis of rotation which is opened and closed,
Air conditioning system. 3. The method of claim 2,
Characterized in that said rotation axis passes through a top surface apex of said movable air guide means (18)
Air conditioning system. The method of claim 3,
Characterized in that the stationary fixing means (17) are arranged in such a way that they are aligned in a plane going parallel to the plane of the front face area of the heat exchanger (5)
Air conditioning system. 5. The method of claim 4,
The at least one stationary fixing means 17 and the at least one movable air guiding means 18 are formed in a strip shape having a first longitudinal side 17a and a second longitudinal side 17b , 18b and narrow sides 17c, 18c, said longitudinal sides 17a, 18a, 17b, 18b being aligned in the horizontal depth direction z.
Air conditioning system. 6. The method of claim 5,
The first longitudinal side surface 18a of the movable air guide means 18 and the fixing means 17 are connected at the first longitudinal side 17a of the fixing means 17, Characterized in that it is rotatably supported about said first longitudinal side (18a)
Air conditioning system. The method according to claim 6,
In the closed state of the device (15), the air guiding means (18) having a rectangular area are arranged in such a way that they are aligned in a plane parallel to the plane of the front face area of the heat exchanger (5) RTI ID = 0.0 > (17) < / RTI >
Air conditioning system. 8. The method of claim 7,
Characterized in that the device (15) is formed by a plurality of stationary fixing means (17) and a plurality of movable air guiding means (18) arranged alternately with each other,
Air conditioning system. 9. The method of claim 8,
Characterized in that the air guide means (18) in the closed state of the device (15) are arranged such that the second longitudinal sides (18b) facing the first longitudinal sides (18a) (18) are arranged in a manner in contact with the fixing means (17) in the region of the heat exchanger (17b), the air guiding means (18) (17). ≪ RTI ID = 0.0 >
Air conditioning system. delete The method according to claim 1,
The outlet opening amount of the first flow path (6) and the outlet opening amount of the second flow path (7) are adjusted in accordance with the operation of the temperature flap (21)
Characterized in that the pressure difference between the upstream and downstream of the movable air guide means (18) is controlled by the opening amount of the outlet of the first flow path (6) and the opening amount of the outlet of the second flow path (7) system. The method according to claim 1,
In the cooling mode, the second flow path 7 is closed when the inlet of the second flow path 7 is closed by the device 15 and the outlet of the second flow path 7 is closed by the temperature flap 21. [ Is closed by the air conditioning system.
KR1020150039144A 2014-09-19 2015-03-20 Device for guiding air of an air-conditioning system for a motor vehicle KR101647253B1 (en)

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FR3072613B1 (en) * 2017-10-24 2020-02-07 Valeo Systemes Thermiques HEATING DEVICE, PARTICULARLY FOR AIR CONDITIONING HOUSING OF A MOTOR VEHICLE
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