EP4509765A1 - Climatiseur avec volet auxiliaire disposé sur le volet secondaire - Google Patents

Climatiseur avec volet auxiliaire disposé sur le volet secondaire Download PDF

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Publication number
EP4509765A1
EP4509765A1 EP23191895.4A EP23191895A EP4509765A1 EP 4509765 A1 EP4509765 A1 EP 4509765A1 EP 23191895 A EP23191895 A EP 23191895A EP 4509765 A1 EP4509765 A1 EP 4509765A1
Authority
EP
European Patent Office
Prior art keywords
flap
auxiliary
horizontal
air conditioner
air
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP23191895.4A
Other languages
German (de)
English (en)
Inventor
Josef Ceský
Michal Kutlák
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daikin Europe NV
Original Assignee
Daikin Europe NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daikin Europe NV filed Critical Daikin Europe NV
Priority to EP23191895.4A priority Critical patent/EP4509765A1/fr
Priority to CN202480052552.9A priority patent/CN121729596A/zh
Priority to PCT/EP2024/072923 priority patent/WO2025036940A1/fr
Publication of EP4509765A1 publication Critical patent/EP4509765A1/fr
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0011—Indoor units, e.g. fan coil units characterised by air outlets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/0057—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in or on a wall
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F24F13/1413—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre using more than one tilting member, e.g. with several pivoting blades

Definitions

  • the present invention relates to an air conditioner. More particularly, the present invention relates to such air conditioner having an auxiliary flap provided on the sub flap.
  • a conventional air conditioner in particular a wall-mounted indoor unit, in general includes an indoor heat exchanger, an indoor fan that circulates air, which has undergone heat exchange in the indoor heat exchanger, indoors; an indoor outlet that blows out the air, which has undergone heat exchange in the indoor heat exchanger, indoors; a main horizontal deflector (main flap) that is arranged in the indoor outlet to change an air direction in a vertical direction and a sub horizontal deflector (sub flap), and the like.
  • main flap main horizontal deflector
  • main flap As the air that flows around the main horizontal deflector (main flap) has high velocity, based on Bernoulli's equation, there is a pressure drop at the two edges of the main horizontal deflector. Due to the greater pressure drop, ambient moister air is sucked in from the side. This side airflow brings moisture and because of this, more sweat is produced on the edges of the main horizontal deflector. Depending on the angle of the main horizontal deflector, this effect is weaker or stronger. In addition, if for example, the vertical deflectors are turned to the left to direct the airflow to the left, there will be less airflow around the right edge of the horizontal deflectors, particularly the main horizontal deflector, increasing the formation of condensation (sweat).
  • the fan guard provided to protect fingers from the rotating fan reduces the airflow and therefore increases the risk of condensation forming on the edges (corners) of the main horizontal deflector. Therefore, in order to avoid or reduce the generation/formation of condensation (sweat), it is necessary to reduce the working area (angle) of the main horizontal deflector and the sub horizontal deflector, especially in relation to each other.
  • setting the combination of flap angles to match the movement so that generation of condensation (sweat) is avoided or at least reduced has the disadvantage that the maximum airflow of the air conditioner cannot be achieved, resulting in a decrease in capacity and efficiency.
  • an air conditioner in particular an indoor unit, more particularly an indoor unit of a separate type air conditioner, having a fan inside and being configured to blow, from an outlet, air sucked by the fan from an inlet
  • the air conditioner including: a first horizontal flap (horizontal deflector; sub flap) having a first surface and a second surface that guide the blowout air, which is provided rotatably at the outlet, a second horizontal flap (horizontal deflector; main flap) placed above the first horizontal flap and on the downstream side of the airflow in an installation situation of the air conditioner, and an auxiliary flap provided on the first surface of the first horizontal flap, wherein the auxiliary flap has a third surface facing the first surface of the first horizontal flap, the third surface of the auxiliary flap having a shape that at least partially approximates a first arc, so that the blowout air flowing along the third surface is guided or deflected towards the lower surface of the second horizontal
  • an air conditioner capable of increasing capacity and efficiency of the air conditioner by maintaining the maximum airflow of the air conditioner, independent of ambient air temperature and humidity, while avoiding or at least reducing generation of sweat at the main flap, in particular on the two opposite edges of the main flap.
  • the term or feature "at least partially approximates a first arc" refers to any type of shape that in approximation replicates the shape of an arc. Accordingly, the third surface of the auxiliary flap can also be formed by for example three (at least three) straight portions or increments that replicate an arc.
  • the term "guided" with respect to the auxiliary flap, in particular the third surface refers to altering or changing the flow direction of the blowout air towards a desired direction or point, in case of the third surface of auxiliary flap 8 towards the lower surface of the second horizontal flap.
  • the first arc of the third surface of the auxiliary flap is formed in a plane parallel to the blow-out direction of the air and perpendicular to a pivot axis X1 about which the first horizontal flap is pivoted, wherein a centre of the first arc preferably lies on the side of the auxiliary flap facing the second horizontal flap.
  • the third surface of the auxiliary flap is formed convex towards the first surface of the first horizontal flap.
  • the auxiliary flap has a fourth surface facing the lower surface of the second horizontal flap having a shape that at least partially approximates a second arc, so that the blowout air flowing along the fourth surface is guided or deflected towards the lower surface of the second horizontal flap.
  • the second arc of the fourth surface of the auxiliary flap is formed in a/the plane parallel to the blow-out direction of the air and perpendicular to a/the pivot axis X1 about which the first horizontal flap is pivoted, wherein a centre of the second arc preferably lies on the side of the auxiliary flap facing the second horizontal flap.
  • the fourth surface of the auxiliary flap is formed concave towards the lower surface of the second horizontal flap.
  • the radius of the first arc is smaller than the radius of the second arc.
  • the auxiliary flap is placed on the airflow upstream side of the first surface of the horizontal flap.
  • auxiliary flap when viewed in a cross-section parallel to the blow-out direction of the air and perpendicular to a/the pivot axis X1 about which the first horizontal flap is pivoted, thickness of the auxiliary flap on the downstream side of the airflow is bigger than the thickness of it on the upstream side of the airflow.
  • a first distance D 1 between a first end of the airflow downstream side of the auxiliary flap and the first surface is bigger than a second distance D 2 between a second end of the airflow upstream side of the auxiliary flap and the first surface.
  • a third distance D 3 between the third surface of the auxiliary flap and the first surface of the first horizontal flap gradually increases from the airflow upstream side towards the airflow downstream side of the auxiliary flap.
  • the third surface of the auxiliary flap is formed convex towards the first surface of the first horizontal flap, the auxiliary flap is arranged and orientated in such way that the closest point of the auxiliary flap to the first horizontal flap lies on the most airflow upstream point of the auxiliary flap. Accordingly, the third distance D 3 increases from the value of the second distance D 2 to the value of the first distance D 1 .
  • the first horizontal flap has a support part that is preferably formed integral with the first horizontal flap and supports the auxiliary flap, in particular in a direction perpendicular to the first surface of the first horizontal flap.
  • the auxiliary flap when viewed in a cross-section parallel to the blow-out direction of the air and perpendicular to a/the pivot axis X1 about which the first horizontal flap is pivoted, includes a first section, which is arranged on the airflow downstream side of the auxiliary flap outside the radius of the first arc, thereby increasing the thickness of the auxiliary flap at the airflow downstream side, wherein preferably the thickness of the first section gradually increases towards the airflow downstream side of the auxiliary flap.
  • the Coanda effect of the auxiliary flap By improving the Coanda effect, the formation/generation of condensation (sweat) on the lower surface of the second horizontal flap (main flap) and the third surface (lower surface) of the auxiliary flap can be reduced.
  • the auxiliary flap when viewed in a cross-section parallel to the blow-out direction of the air and perpendicular to a/the pivot axis X1 about which the first horizontal flap is pivoted, includes a second section, which is arranged on the airflow downstream side of the auxiliary flap inside the radius of the second arc, thereby increasing the thickness of the auxiliary flap at the airflow downstream side, wherein preferably the thickness of the second section gradually increases towards the airflow downstream side of the auxiliary flap. In this way it is possible to build a countermeasure for the main flap (second horizontal flap).
  • the angle/curvature of the auxiliary flap can be increased on the downstream side of the airflow towards the second horizontal flap (main flap), thus providing more flexibility with respect to the working angle range of the main and sub flaps. More specifically, by adding the second section to the auxiliary flap, the deflection of the airflow at the sub flap can be increased, making it unnecessary to change the angle of the sub flap too much upwards, thereby ensuring maximum airflow.
  • two auxiliary flaps are provided on the first surface of the first horizontal flap on opposite sides of the first horizontal flap, in a direction parallel to the pivot axis X1, both auxiliary flaps extending a predetermined length from the respective end of the first horizontal flap towards each other.
  • the first arc and/or the second arc are formed such way that the blowout air flowing along the auxiliary flap is guided or deflected towards a predetermined area on the airflow downstream side of the lower surface of the second horizontal flap.
  • example implementations of the present invention relate to an air conditioner.
  • the air conditioner in accordance with the present embodiment includes a wall-mounted indoor unit 1 shown in Figure 1 and an outdoor unit 20 (refer to Figure 2 ) and performs heat-pump type cooling and heating operations.
  • the wall-mounted indoor unit 10 is entirely elongated in one direction and mounted on a wall surface of a room so that its longitudinal direction is horizontal. As shown in Fig. 1 , the wall-mounted indoor unit 10 includes a casing 2, an indoor fan 3 accommodated in the casing 2, an indoor heat exchanger 4, sideward deflectors 5, a first horizontal deflector 6 (first horizontal flap; sub flap), a second horizontal deflector 7 (second horizontal flap; main flap), and the like.
  • the casing 2 includes a substantially box-shaped casing base 11 and a front panel 12.
  • the casing base 11 is open at the front, and the front panel 12 covers the open front portion of the casing base 11.
  • the casing base 11 includes an upper surface, in which an indoor inlet 13 is formed, and a lower surface, in which an indoor outlet 14 is formed.
  • the indoor inlet 13 is a grid-like opening elongated in a sideward direction
  • the indoor outlet 14 is a rectangular opening elongated in the sideward direction.
  • the indoor fan 3 which is arranged in an airflow path from the indoor inlet 13 to the indoor outlet 14, is driven to draw in air through the indoor inlet 13 so that the air performs heat exchange (i.e., becomes heated or cooled) in the indoor heat exchanger 4 and is then blown out of the indoor outlet 14 into the room.
  • heat exchange i.e., becomes heated or cooled
  • the sideward deflectors 5 are arranged at an inner side of the indoor outlet 14 to adjust an air direction of the air blown out of the indoor outlet 14 in the sideward direction.
  • the first horizontal deflector 6 adjusts the air direction of the air blown out of the indoor outlet 14 in a vertical direction.
  • the first horizontal deflector 6 includes a pivot centre C1 at an intermediate position of the indoor outlet 14 in the vertical direction.
  • the first horizontal deflector 6 indicated by the solid lines in Fig. 1 is located at the uppermost position in a blow-out direction adjustment range of the first horizontal deflector 6. Further, the first horizontal deflector 6 indicated by the double-dashed lines in Fig. 1 is located at the lowermost position in the blow-out direction adjustment range of the first horizontal deflector 6.
  • the uppermost position in the blow-out direction adjustment range corresponds to a position at which the first horizontal deflector 6 is practically horizontal in the same manner as a typical wall-mounted indoor unit.
  • the first horizontal deflector 6 is configured to be swung by a drive motor (not shown) between the solid line position and the double-dashed line position and held at any position between the solid line position and the double-dashed line position.
  • the second horizontal deflector 7 (main flap) is arranged along an upper structural portion of the indoor outlet 14 to prevent water from collecting on the inner surface of the first horizontal deflector 6 during a cooling operation.
  • the second horizontal deflector 7 is configured to adjust the air direction of the blown-out air between a solid line position and a double-dashed line position in Fig. 1 about a pivot center C2.
  • the second horizontal deflector 7 is automatically controlled to be held at an optimal position in cooperation with the position of the first horizontal deflector 6 in the blow-out direction adjustment range during a cooling operation. However, during a heating operation, the second horizontal deflector 7 is held at the uppermost position (solid line in Fig. 1 ) in a blow-out direction adjustment range.
  • the first horizontal deflector 6 and the second horizontal deflector 7 are each configured to be pivoted to a position located further upward from the uppermost position in the corresponding blow-out direction adjustment range so that the first horizontal deflector 6 and the second horizontal deflector 7 are in contact with the upper structural portion of the indoor outlet 14 (that is, closed positions) to close the indoor outlet 14.
  • the first horizontal deflector 6 and the second horizontal deflector 7 also serve as cover members of the indoor outlet 14.
  • FIG. 2 shows a functional block diagram of the air conditioner 1 in accordance with one embodiment of the present invention.
  • the wall-mounted indoor unit 10 incorporates a controller 30 that entirely controls the operation of the air conditioner.
  • the controller 30 is configured by a memory that stores predetermined control programs, a processor that runs on the control programs to perform various controls, and the like.
  • the controller 30 includes an air volume controller 31 and an air direction controller 32.
  • the air volume controller 31 restricts the air volume produced by the indoor fan 3 at the start of a heating operation.
  • the air direction controller 32 controls the vertical air direction with the first horizontal deflector 6 and the second horizontal deflector 7.
  • the controller 30 further includes a transmission/reception circuit unit 33, which performs communication with the outdoor unit 20, and the like.
  • the controller 30 may comprise one or more processing units or modules (e.g., a central processing unit (CPU) such as a microprocessor, or a suitably programmed field programmable gate array (FPGA) or application-specific integrated circuit (ASIC)). Additionally, or alternatively, the controller 30 may be provided with any memory sections (not shown) necessary to perform its function of controlling operation of the air conditioner 1. Such memory sections may be provided as part of (comprised in) the controller 30 (e.g., integrally formed or provided on the same chip) or provided separately, but electrically connected to the controller 30. By way of example, the memory sections may comprise both volatile and non-volatile memory resources, including, for example, a working memory (e.g., a random access memory).
  • a working memory e.g., a random access memory
  • the memory sections may include an instruction store (e.g., a ROM in the form of an electrically-erasable programmable read-only memory (EEPROM) or flash memory) storing a computer program comprising computer-readable instructions which, when executed by the controller 30, cause the controller 30 to perform various functions described herein.
  • an instruction store e.g., a ROM in the form of an electrically-erasable programmable read-only memory (EEPROM) or flash memory
  • EEPROM electrically-erasable programmable read-only memory
  • flash memory storing a computer program comprising computer-readable instructions which, when executed by the controller 30, cause the controller 30 to perform various functions described herein.
  • the computer program comprising the computer-readable instructions which, when executed by the controller 30, cause the controller 30 to perform various functions described herein may, for example, be a software or a firmware program.
  • the control device 30 is connected to the indoor fan 3 and an indoor heat-exchanger temperature sensor 41.
  • the indoor fan 3 is an indoor circulation fan that circulates the air, which has undergone heat exchange in the indoor heat exchanger 4, indoors.
  • the indoor fan 3 includes a drive motor, of which rotational speed is controlled based on an instruction from the air volume controller 31 for control of the air volume.
  • the indoor heat-exchanger temperature sensor 41 is attached to the indoor heat exchanger 4 at a position that allows for detection of an average temperature of the indoor heat exchanger 4 as an indoor heat exchanger temperature Tr.
  • the indoor heat exchanger temperature Tr detected by the indoor heat-exchanger temperature sensor 41 is transmitted to the controller 30 and used as reference data for the air volume control of the indoor fan 3 by the air volume controller 31 and the air direction control of the first horizontal deflector 6 and the second horizontal deflector 7 by the air direction controller 32.
  • controller 30 is connected to drive units of the first horizontal deflector 6, the second horizontal deflector 7, and the sideward deflector 5 so that the deflectors are controlled by the air direction controller 32.
  • control device 30 is connected to an electric expansion valve 42 that controls a refrigerant to the indoor heat exchanger 4. An opening degree of the electric expansion valve 42 is controlled by an instruction from the controller 30.
  • the wall-mounted indoor unit 10 includes a remote-control unit 43 as an accessory.
  • the remote-control unit 43 functions as an operation unit of the air conditioner 1 and includes an operation switch, an operation mode selection portion, a setting portion, an air volume setting portion, a means of feedback (e.g., a display), and the like.
  • the operation switch starts and ends operation of the air conditioner 1.
  • the setting portion sets a set temperature for the indoor air.
  • the air volume setting portion sets the air volume of the indoor fan during a normal heating operation.
  • the display shows the indoor temperature or the air volume of the indoor fan.
  • the remote-control unit 43 is configured to transmit operating information, which is selected or set, to the controller 30 through wireless communication.
  • the outdoor unit 20 includes a compressor 21, an outdoor fan 22, as well as an outdoor controller 23 that controls these devices. Further, the outdoor unit 20 includes a four-way switching valve (not shown) that switches a refrigerant circuit between a cooling cycle and a heating cycle. The switching of the four-way switching valve is controlled by the outdoor controller 23. Also, the controller 30 of the wall-mounted indoor unit 10 is electrically connected to the outdoor controller 23 via the transmit/receive circuit unit 33, and operating information from the remote-control unit 43 received by the controller 30 is also transmitted to the outdoor controller 23.
  • the outdoor unit further comprises an outdoor air temperature sensor (not shown) for monitoring the outdoor air temperature.
  • Figure 3 shows a partial view of the cross-sectional view of the wall-mounted indoor unit 1 of Figure 1 , showing in more detail the first horizontal flap 6 (sub flap) and the second horizontal flap 7 (main flap).
  • the first horizontal flap 6 has a first surface 6A and a second surface 6B which are used to guide the blowout air in a desired direction.
  • the first surface 6A faces upwards, towards the second horizontal flap 7, in particular towards the lower surface 7A of the second horizontal flap 7.
  • an auxiliary flap 8 is provided having a third surface 8A facing the first surface 6A of the first horizontal flap 6.
  • the third surface 8A of the auxiliary flap 8 faces downward.
  • the auxiliary flap 8 has a shape and orientation, in particular an arcuate shape, such that the auxiliary flap 8 extends from an airflow upstream side to an airflow downstream side of the flap 8 towards the second horizontal flap 7 (main flap), in particular in an open position of the two flaps 6 and 7.
  • the auxiliary flap 8 has an arcuate shape, in particular the third surface 8A of the auxiliary flap 8 has a shape that at least partially approximates a first arc, the blowout air flowing along the third surface is deflected towards the lower surface 7A of the second horizontal flap 7 facing the first surface 6A of the first horizontal flap 6.
  • Figure 4 shows a schematic cross-sectional side view of a first horizontal flap with an auxiliary flap in accordance with one embodiment of the present invention.
  • the first horizontal flap 6 is provided with an auxiliary flap 8, which is provided on the first surface 6A of the first horizontal flap 6.
  • the term "provided on the first surface” is to be understood such that the auxiliary flap 8 is provided with the first horizontal flap 6, in particular on a side of the first surface 6A, but not necessarily directly on the first surface 6A.
  • the auxiliary flap 8 is provided at some distance from the first surface 6A and is supported or fixed by some supporting means, such as the support part 9 shown in Figure 5 .
  • the auxiliary flap 8 is only supported by a mounting part 10 of the first auxiliary flap 8, which is used to fix the first auxiliary flap 8 to its rotational drive shaft (not shown).
  • Figure 4 also shows that the auxiliary flap 8 has a fourth surface 8B facing the lower surface 7A of the second horizontal flap 7 (shown in Figure 3 ) having a shape that at least partially approximates a second arc, so that the blowout air flowing along the fourth surface 8B is deflected towards the lower surface 7A of the second horizontal flap 7 (main flap).
  • the airflow direction is from the right to the left. Without the auxiliary flap 8 being provided on the first horizontal flap 6, the airflow would flow in general along the side surfaces 6A and 6B of the flap 6, as indicated by the arrows A G .
  • auxiliary flap 8 on the first horizontal flap 6, the air flowing along the first surface 6A of the flap 6 is deflected upwards, namely towards the second horizontal flap 7 as indicated by the arrow A D .
  • auxiliary flap on the airflow upstream side of the horizontal flap 6.
  • a first distance D 1 defined between a first end 8End 1 of the airflow downstream side of the auxiliary flap 8 and the first surface 6A, is bigger than a second distance D 2 , defined between a second end 8End 2 of the airflow upstream side of the auxiliary flap 8 and the first surface 6A.
  • a third distance D 3 defined between the third surface 8A of the auxiliary flap 8 and the first surface 6A of the first horizontal flap 6, gradually increases from the airflow upstream side towards the airflow downstream side of the auxiliary flap 8.
  • the auxiliary flap 8 is supported not only by the mounting part 10, but also by the support part 9.
  • the support part 9 is formed integral with the first horizontal flap 6, in particular in a direction perpendicular to the first surface 6A of the first horizontal flap 6.
  • the support part 9 may also be formed as a separate part which is fixed to the first horizontal flap 6 by a fixing means such as a screw.
  • Figure 6 shows a schematic spatial view of the first horizontal flap with an auxiliary flap in accordance with an alternative embodiment, third embodiment of the present invention, in which the auxiliary flap 8 is not supported by a support part 9. Instead, the auxiliary flap 8 is formed as part of the mounting part 10, extending longitudinally towards the centre of the first horizontal flap 6.
  • FIG. 7 shows a schematic cross-sectional view of the auxiliary flap 8 in accordance with the present invention.
  • the first arc of the third surface 8A of the auxiliary flap 8 is formed in a plane E (shown in Fig. 5 ) parallel to the blow-out direction of the air (airflow) and perpendicular to a pivot axis X1 about which the first horizontal flap 6 is pivoted (shown in Fig. 3 ), wherein a centre of the first arc lies on the side of the auxiliary flap 8 facing the second horizontal flap 7.
  • the third surface 8A of the auxiliary flap 8 is formed convex towards the first surface 6A of the first horizontal flap 6.
  • the second arc of the fourth surface 8B of the auxiliary flap 8 is formed in the plane E parallel to the blow-out direction of the air and perpendicular to a/the pivot axis X1 of the first horizontal flap 6, wherein a centre of the second arc lies on the side of the auxiliary flap 8 facing the second horizontal flap 7.
  • the fourth surface 8B of the auxiliary flap 8 is formed concave towards the lower surface 7A of the second horizontal flap 7.
  • the radius of the first arc is smaller than the radius of the second arc.
  • Figure 7 further shows that a thickness of the auxiliary flap 8 on the downstream side of the airflow is greater than its thickness on the upstream side of the airflow.
  • the curvature of the fourth surface 8B of the auxiliary flap increases towards its downstream end.
  • the auxiliary flap 8 can be provided with a first section A, which lies on the airflow downstream side of the auxiliary flap 8 outside (radially outward) the radius of the first arc. In this way, it is possible to increase the thickness of the auxiliary flap 8 at the airflow downstream side, wherein the thickness of the first section A gradually increases towards the airflow downstream side of the auxiliary flap 8.
  • auxiliary flap 8 with a second section B, which lies on the airflow downstream side of the auxiliary flap 8 inside (radially inward) the radius of the second arc. In this way, it is possible to further increase the thickness of the auxiliary flap 8 at the airflow downstream side, wherein preferably the thickness of the second section B gradually increases towards the airflow downstream side of the auxiliary flap 8. In this way, it is additionally possible to increase the curvature of the fourth surface 8B of the auxiliary flap 9 towards its downstream end.
  • Figure 8 shows an airflow simulation of conventional horizontal flaps (main flap and sub flap) without the installation of an auxiliary flap.
  • the sub flap cannot sufficiently support the main flap. In other words, the sub flap cannot generate sufficient upward airflow to push the air flowing along the main flap upwards, closer to the lower surface 7A of the main flap (second horizontal flap).
  • the airflow along the main flap does not fully conform to the shape of the main flap, particularly at the end of the main flap (as seen in the direction of airflow).
  • the airflow breaks away from the surface of the main flap, leaving an area of slow flowing air (having low velocity) on the downstream side of the lower surface 7A of the main flap (second horizontal flap).
  • the airflow velocity near the lower surface 7A, in particular at its end is low, condensation occurs in the area of low velocity, resulting in the formation of undesired water droplets.
  • Figure 9 shows an airflow simulation of an arrangement of horizontal flaps according to the present invention, namely using a sub flap having an auxiliary flap.
  • the sub flap first horizontal flap 6
  • the auxiliary flap 8 the high velocity air flowing along the first surface (upper surface) 6A of the sub flap 6 is guided upwards towards the lower surface 7A of the main flap (second horizontal flap).
  • the air normally flowing along the main flap and breaking away from the surface of the main flap is pushed upwards closer to the surface of the main flap. This avoids an area of slow flowing air (with low velocity) on the downstream side of the lower surface 7A of the main flap (second horizontal flap) .

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Flow Control Members (AREA)
EP23191895.4A 2023-08-17 2023-08-17 Climatiseur avec volet auxiliaire disposé sur le volet secondaire Pending EP4509765A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP23191895.4A EP4509765A1 (fr) 2023-08-17 2023-08-17 Climatiseur avec volet auxiliaire disposé sur le volet secondaire
CN202480052552.9A CN121729596A (zh) 2023-08-17 2024-08-14 具有设置在副导风板上的辅助导风板的空调
PCT/EP2024/072923 WO2025036940A1 (fr) 2023-08-17 2024-08-14 Climatiseur ayant un volet auxiliaire disposé sur le sous-volet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP23191895.4A EP4509765A1 (fr) 2023-08-17 2023-08-17 Climatiseur avec volet auxiliaire disposé sur le volet secondaire

Publications (1)

Publication Number Publication Date
EP4509765A1 true EP4509765A1 (fr) 2025-02-19

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP23191895.4A Pending EP4509765A1 (fr) 2023-08-17 2023-08-17 Climatiseur avec volet auxiliaire disposé sur le volet secondaire

Country Status (3)

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EP (1) EP4509765A1 (fr)
CN (1) CN121729596A (fr)
WO (1) WO2025036940A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108105859B (zh) * 2017-12-11 2020-05-22 芜湖美智空调设备有限公司 空调室内机及其控制方法
CN111351130A (zh) * 2020-03-26 2020-06-30 青岛海尔空调器有限总公司 空调室内机
WO2022068952A1 (fr) * 2021-04-02 2022-04-07 青岛海尔空调器有限总公司 Dispositif de guidage d'air de climatiseur, et climatiseur
EP3982052A1 (fr) * 2020-10-09 2022-04-13 Panasonic Intellectual Property Management Co., Ltd. Climatiseur

Patent Citations (4)

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