WO2013047126A1 - 空調室内機 - Google Patents
空調室内機 Download PDFInfo
- Publication number
- WO2013047126A1 WO2013047126A1 PCT/JP2012/072585 JP2012072585W WO2013047126A1 WO 2013047126 A1 WO2013047126 A1 WO 2013047126A1 JP 2012072585 W JP2012072585 W JP 2012072585W WO 2013047126 A1 WO2013047126 A1 WO 2013047126A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- adjusting plate
- air
- direction adjusting
- wind direction
- indoor unit
- Prior art date
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 69
- 230000000694 effects Effects 0.000 claims abstract description 69
- 238000007664 blowing Methods 0.000 claims description 44
- 230000036544 posture Effects 0.000 claims description 20
- 238000009423 ventilation Methods 0.000 abstract description 11
- 238000011144 upstream manufacturing Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 6
- 230000001143 conditioned effect Effects 0.000 description 4
- 238000013459 approach Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 230000000414 obstructive effect Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15C—FLUID-CIRCUIT ELEMENTS PREDOMINANTLY USED FOR COMPUTING OR CONTROL PURPOSES
- F15C4/00—Circuit elements characterised by their special functions
-
- 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
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- 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
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/79—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling the direction of the supplied air
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- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/28—Details or features not otherwise provided for using the Coanda effect
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/206—Flow affected by fluid contact, energy field or coanda effect [e.g., pure fluid device or system]
- Y10T137/218—Means to regulate or vary operation of device
- Y10T137/2202—By movable element
Definitions
- the present invention relates to an air conditioning indoor unit.
- the vertical wind direction plate approaches the upper end of the air outlet and makes the air outlet obstructive, so that the pressure loss increases.
- the subject of this invention is providing the air-conditioning indoor unit which can guide
- An air-conditioning indoor unit is an air-conditioning indoor unit having a Coanda effect utilization mode that guides the flow of blown air blown from a blowout outlet in a predetermined direction by the Coanda effect, and the first airflow direction adjustment
- the board, the 2nd wind direction adjustment board, and the control part are provided.
- the first wind direction adjusting plate is a movable adjusting plate that changes the vertical direction of the blown air.
- the second wind direction adjusting plate is provided in the vicinity of the air outlet, and at the time of housing, at least the tip is housed in the front surface of the indoor unit outside the air passage.
- the control unit controls the postures of the first wind direction adjusting plate and the second wind direction adjusting plate.
- the control unit takes a posture in which the second wind direction adjusting plate is separated from the front surface of the indoor unit, and the first wind direction adjusting plate and the first wind direction adjusting plate form a predetermined angle.
- the attitudes of the wind direction adjusting plate and the second wind direction adjusting plate are controlled to make the blown air a Coanda airflow along the lower surface of the second wind direction adjusting plate.
- the blown air whose air direction is adjusted by the first air direction adjusting plate flows along the lower surface of the second air direction adjusting plate that is separated from the front surface of the indoor unit by the Coanda effect.
- Coanda airflow can be achieved.
- the air conditioning indoor unit is the air conditioning indoor unit according to the first aspect, and further includes a scroll that guides the air-conditioned air to the outlet.
- the control unit executes the Coanda effect utilization mode
- the first wind direction adjusting plate and the second wind direction adjusting plate have an inner angle formed by the tangent of the scroll end portion and the second wind direction adjusting plate, and the tangent of the scroll end portion.
- a posture that satisfies the condition that it is larger than the inner angle formed by the first wind direction adjusting plate is taken.
- the blown air can be greatly deflected from the tangential direction of the end portion of the scroll. Therefore, the blown air is directed to the ceiling surface and delivered far along the ceiling surface.
- the air conditioning indoor unit according to the third aspect of the present invention is the air conditioning indoor unit according to the first aspect or the second aspect, and in the Coanda effect utilization mode, the tip of the second wind direction adjusting plate is directed upward from the horizontal. .
- this air conditioning indoor unit even if the blown air whose airflow is adjusted by the first airflow direction adjusting plate is horizontal or slightly downward, it becomes upward air due to the Coanda effect, so the air immediately after passing through the air outlet is forced upward There is no need to be done. That is, the wind direction is changed while the pressure loss due to the ventilation resistance of the first wind direction adjusting plate is suppressed.
- the air conditioning indoor unit according to the fourth aspect of the present invention is the air conditioning indoor unit according to the third aspect, and in the Coanda effect utilization mode, the tip of the second wind direction adjusting plate is positioned above the outlet.
- the tip of the second airflow direction adjusting plate is in the air passage, the Coanda airflow along the lower surface of the second airflow direction adjusting plate interferes with the blown air passing through the upper side of the second airflow direction adjusting plate, and the upward airflow Progress may be inhibited.
- this air conditioning indoor unit since the tip of the second air direction adjusting plate is located above the air outlet, the generation of strong airflow on the upper side of the second air direction adjusting plate is suppressed. Therefore, the upward guidance of the Coanda airflow is hardly inhibited.
- An air conditioner indoor unit is the air conditioner indoor unit according to any one of the first to fourth aspects, and in the Coanda effect utilization mode, The height position is lower than when the operation is stopped.
- the rear end portion of the second wind direction adjustment plate enters the upstream side of the traveling path of the blown air whose air direction has been adjusted by the first wind direction adjustment plate. It becomes easier to generate a Coanda airflow due to the Coanda effect on the upstream side.
- An air conditioning indoor unit pertaining to a sixth aspect of the present invention is the air conditioning indoor unit pertaining to any one of the first to fifth aspects, wherein the tip of the second wind direction adjusting plate is blown in the Coanda effect utilization mode. Projects outward from the exit. In this air conditioning indoor unit, the tip of the second air direction adjusting plate protrudes outward from the air outlet, so that the Coanda airflow reaches further away.
- the air conditioner indoor unit according to the seventh aspect of the present invention is the air conditioner indoor unit according to the sixth aspect, and in the Coanda effect utilization mode, the second wind direction adjusting plate is separated from the front surface of the indoor unit as it goes forward. Controlled by attitude. In this air conditioning indoor unit, the Coanda airflow moves away from the suction port, so that a short circuit is prevented.
- An air conditioning indoor unit is the air conditioning indoor unit according to any one of the first to seventh aspects, and the longitudinal dimension of the second wind direction adjusting plate is the first wind direction adjustment. It is not less than the longitudinal dimension of the plate.
- the second wind direction adjusting plate since the second wind direction adjusting plate receives all the blown air whose air direction has been adjusted by the first air direction adjusting plate, it is possible to prevent the blown air from being short-circuited from the side of the second air direction adjusting plate.
- An air conditioning indoor unit pertaining to a ninth aspect of the present invention is the air conditioning indoor unit pertaining to any one of the first to eighth aspects, wherein the second wind direction adjusting plate pivots about a predetermined pivot axis. To do.
- the rotating shaft is provided at a location that is out of the air passage.
- the second wind direction adjusting plate takes a posture in which the height position of the rear end portion becomes lower than that at the time of operation stoppage by rotation. Therefore, since the rear end part enters the upstream side of the traveling path of the blown air whose air direction is adjusted by the first air direction adjusting plate, the Coanda airflow due to the Coanda effect is more easily generated on the upstream side.
- the air conditioning indoor unit according to the tenth aspect of the present invention is the air conditioning indoor unit according to the first aspect, and the control unit has a down blowing mode.
- the lower blowing mode is a mode in which the leading ends of the first air direction adjusting plate and the second air direction adjusting plate are directed downward in the forward direction and the air is guided downward.
- the wind direction can be made more downward in the down blowing mode.
- the wind direction control is not easy with only the first wind direction adjusting plate. Airflow is easily generated.
- the air conditioning indoor unit according to the eleventh aspect of the present invention is the air conditioning indoor unit according to the first aspect, and the posture of the front surface of the indoor unit is the same when the operation is stopped and during the operation.
- this air conditioning indoor unit by executing the Coanda effect utilization mode, the blown air whose air direction is adjusted by the first air direction adjusting plate flows along the lower surface of the second air direction adjusting plate away from the front surface of the indoor unit by the Coanda effect. Coanda airflow can be achieved.
- the air conditioning indoor unit according to the twelfth aspect of the present invention is the air conditioning indoor unit according to the first aspect, and in the Coanda effect utilization mode, the rear end of the second wind direction adjusting plate enters the flow path of the blown air. As a result, the air-conditioning indoor unit easily generates a Coanda airflow due to the Coanda effect.
- the blown air whose wind direction is adjusted by the first wind direction adjusting plate is used to convert the blown air by the Coanda effect to the front part of the indoor unit.
- a Coanda airflow that flows along the lower surface of the second airflow direction adjusting plate away from the second airflow direction adjusting plate can be obtained.
- the blown air can be greatly deflected from the tangential direction of the end portion of the scroll. Therefore, the blown air is directed to the ceiling surface and delivered far along the ceiling surface.
- the blown air whose air direction is adjusted by the first air direction adjusting plate is horizontal or slightly downward, so that it becomes upward air due to the Coanda effect. The air does not have to be forced upwards. That is, the wind direction is changed while the pressure loss due to the ventilation resistance of the first wind direction adjusting plate is suppressed.
- the tip of the second wind direction adjusting plate is located above the outlet, the generation of strong airflow is suppressed above the second wind direction adjusting plate. Therefore, the upward guidance of the Coanda airflow is hardly inhibited.
- the rear end portion of the second wind direction adjusting plate enters the upstream side of the traveling path of the blown air whose air direction has been adjusted by the first wind direction adjusting plate, so the rear end portion is stationary. In comparison with this type, a Coanda airflow is more easily generated due to the Coanda effect on the upstream side.
- the tip of the second airflow direction adjusting plate protrudes outward from the outlet, so that the Coanda airflow reaches farther away.
- the Coanda airflow moves away from the suction port, thereby preventing a short circuit.
- the second wind direction adjusting plate since the second wind direction adjusting plate receives all of the blown air whose wind direction has been adjusted by the first wind direction adjusting plate, the blown air is short-circuited from the side of the second wind direction adjusting plate. Is prevented.
- the second wind direction adjusting plate takes a posture in which the height position of the rear end portion is lower than that at the time of operation stoppage by rotation. Therefore, since the rear end part enters the upstream side of the traveling path of the blown air whose air direction is adjusted by the first air direction adjusting plate, the Coanda airflow due to the Coanda effect is more easily generated on the upstream side.
- the wind direction can be made more downward in the downward blowing mode.
- the first wind direction adjusting plate is downward from the tangential angle of the end of the scroll, it is not easy to control the wind direction with the first wind direction adjusting plate alone. Coanda airflow is easily generated.
- the side view of the 1st wind direction adjustment board and the 2nd wind direction adjustment board at the time of blowing front air normally.
- the side view of the 1st wind direction adjustment board and the 2nd wind direction adjustment board at the time of blowing air blowing normally forward downward.
- the conceptual diagram which shows the direction of blowing air and the direction of Coanda airflow.
- the conceptual diagram showing an example of the opening angle of a 1st wind direction adjustment board and a 2nd wind direction adjustment board.
- FIG. 1 is a cross-sectional view of the air conditioning indoor unit 10 when operation is stopped according to an embodiment of the present invention.
- FIG. 2 is a cross-sectional view of the air conditioning indoor unit 10 during operation. 1 and 2, the air conditioning indoor unit 10 is a wall-hanging type, and a main body casing 11, an indoor heat exchanger 13, an indoor fan 14, a bottom frame 16, and a control unit 40 are mounted thereon.
- the main body casing 11 has a top surface portion 11a, a front panel 11b, a back plate 11c, and a lower horizontal plate 11d, and houses an indoor heat exchanger 13, an indoor fan 14, a bottom frame 16, and a control unit 40 therein. .
- the top surface part 11a is located in the upper part of the main body casing 11, and the inlet (not shown) is provided in the front part of the top surface part 11a.
- the front panel 11b constitutes the front part of the indoor unit, and has a flat shape without a suction port. Further, the upper end of the front panel 11b is rotatably supported by the top surface portion 11a, and can operate in a hinged manner.
- the indoor heat exchanger 13 and the indoor fan 14 are attached to the bottom frame 16.
- the indoor heat exchanger 13 exchanges heat with the passing air.
- the indoor heat exchanger 13 has an inverted V-shape in which both ends are bent downward in a side view, and the indoor fan 14 is located below the indoor heat exchanger 13.
- the indoor fan 14 is a cross-flow fan, blows air taken in from the room against the indoor heat exchanger 13 and then blows it into the room.
- An air outlet 15 is provided at the lower part of the main body casing 11.
- a first air direction adjusting plate 31 that changes the direction of the air blown from the air outlet 15 is rotatably attached to the air outlet 15.
- the first wind direction adjusting plate 31 is driven by a motor (not shown) and can change the direction of the blown air, and can also open and close the blowout port 15.
- the first wind direction adjusting plate 31 can take a plurality of postures having different inclination angles.
- a second air direction adjusting plate 32 is provided in the vicinity of the air outlet 15.
- the second wind direction adjusting plate 32 can take a posture inclined in the front-rear direction by a motor (not shown), and is accommodated in the accommodating portion 130 provided in the front panel 11b when the operation is stopped.
- the second wind direction adjusting plate 32 can take a plurality of postures having different inclination angles.
- the air outlet 15 is connected to the inside of the main body casing 11 by the air outlet channel 18.
- the blowout channel 18 is formed along the scroll 17 of the bottom frame 16 from the blowout port 15.
- the indoor air is sucked into the indoor fan 14 through the suction port and the indoor heat exchanger 13 by the operation of the indoor fan 14, and blown out from the blower outlet 15 through the blowout passage 18 from the indoor fan 14.
- the control unit 40 is located on the right side of the indoor heat exchanger 13 and the indoor fan 14 when the main body casing 11 is viewed from the front panel 11b, and controls the number of rotations of the indoor fan 14, the first wind direction adjusting plate 31 and the second. The operation of the wind direction adjusting plate 32 is controlled.
- the depth of the depression in this region is set so as to match the thickness dimension of the second air direction adjusting plate 32, and constitutes an accommodating portion 130 in which the second air direction adjusting plate 32 is accommodated.
- the surface of the accommodating part 130 is also a gentle circular curved surface.
- the blower outlet 15 is formed in the lower part of the main body casing 11, and is a rectangular opening which makes a horizontal direction (direction orthogonal to the paper surface of FIG. 1) a long side.
- the lower end of the blower outlet 15 is in contact with the front edge of the lower horizontal plate 11d, and the virtual plane connecting the lower end and the upper end of the blower outlet 15 is inclined forward and upward.
- Scroll 17 The scroll 17 is a partition wall curved so as to face the indoor fan 14 and is a part of the bottom frame 16.
- the end F of the scroll 17 reaches the vicinity of the periphery of the air outlet 15.
- the air passing through the blowout flow path 18 travels along the scroll 17 and is sent in the tangential direction of the end F of the scroll 17. Therefore, if there is no first air direction adjusting plate 31 at the air outlet 15, the air direction of the air blown out from the air outlet 15 is a direction substantially along the tangent L 0 of the terminal end F of the scroll 17.
- the vertical wind direction adjusting plate 20 includes a plurality of blade pieces 201 and a connecting rod 203 that connects the plurality of blade pieces 201. Further, the vertical air direction adjusting plate 20 is disposed in the vicinity of the indoor fan 14 in the outlet flow path 18 rather than the first air direction adjusting plate 31.
- the plurality of blade pieces 201 swing left and right around a state perpendicular to the longitudinal direction as the connecting rod 203 horizontally reciprocates along the longitudinal direction of the outlet 15.
- the connecting rod 203 is horizontally reciprocated by a motor (not shown).
- First wind direction adjusting plate 31 The first wind direction adjusting plate 31 has an area that can close the air outlet 15.
- the outer side surface 31 a is finished to have a gentle circular curved surface that protrudes outwardly as if it is an extension of the curved surface of the front panel 11 b. Further, the inner side surface 31b (see FIG. 2) of the first wind direction adjusting plate 31 also forms an arc curved surface substantially parallel to the outer surface.
- the first wind direction adjusting plate 31 has a rotation shaft 311 at the lower end.
- the rotating shaft 311 is connected to the rotating shaft of a stepping motor (not shown) fixed to the main body casing 11 in the vicinity of the lower end of the air outlet 15.
- a stepping motor not shown
- the upper end of the first air direction adjusting plate 31 is moved away from the upper end side of the outlet 15 to open the outlet 15.
- the rotation shaft 311 rotates in the clockwise direction in front view in FIG. 1
- the upper end of the first air direction adjusting plate 31 operates so as to approach the upper end side of the outlet 15 to close the outlet 15.
- the air blown out from the air outlet 15 flows substantially along the inner surface 31 b of the first air direction adjusting plate 31. That is, the air direction of the air blown out substantially along the tangential direction of the terminal end F of the scroll 17 is changed slightly upward by the first air direction adjusting plate 31.
- Second wind direction adjusting plate 32 The second air direction adjusting plate 32 is accommodated in the accommodating portion 130 while the air-conditioning operation is stopped or in an operation in the normal blowing mode described later. The second wind direction adjusting plate 32 moves away from the accommodating portion 130 by rotating.
- the rotation shaft 321 of the second wind direction adjusting plate 32 is provided in the vicinity of the lower end of the housing portion 130 and inside the main body casing 11 (a position above the upper wall of the blowout flow path 18). The lower end portion of the plate 32 and the rotation shaft 321 are connected with a predetermined distance therebetween.
- the rotation shaft 321 rotates and the second air direction adjustment plate 32 moves away from the accommodating portion 130 of the front surface of the indoor unit, the height position of the lower end of the second air direction adjustment plate 32 is rotated to be lower. .
- the inclination when the second wind direction adjusting plate 32 rotates and opens is gentler than the inclination of the front surface of the indoor unit.
- the accommodating portion 130 is provided outside the air passage, and the entire second wind direction adjusting plate 32 is accommodated outside the air passage when being accommodated.
- the second air direction adjusting plate 32 may be accommodated outside the air passage, and the rest may be accommodated in the air passage (for example, the upper wall portion of the air passage).
- the rotation shaft 321 rotates counterclockwise as viewed from the front in FIG. 1, the upper end and the lower end of the second wind direction adjusting plate 32 are separated from the accommodating portion 130 while drawing an arc.
- the shortest distance between the upper indoor unit front portion and the accommodating portion 130 is larger than the shortest distance between the lower end and the accommodating portion 130.
- the operating state of the second wind direction adjusting plate 32 includes a state in which the second wind direction adjusting plate 32 is housed, a posture in which the second wind direction adjusting plate 32 is rotated, tilted forward and upward, further rotated and substantially horizontal, and further rotated and tilted forward and downward. There is a posture.
- the outer side surface 32a of the second wind direction adjusting plate 32 is a gentle circular arc that is convex outward such that it is on the extension of the gentle arc curved surface of the front panel 11b. It has a curved surface. Further, the inner side surface 32 b of the second wind direction adjusting plate 32 is finished to have an arcuate curved surface along the surface of the housing portion 130. Further, the dimension in the longitudinal direction of the second air direction adjusting plate 32 is set to be equal to or larger than the dimension in the longitudinal direction of the first air direction adjusting plate 31.
- the air-conditioning indoor unit of the present embodiment is a means for controlling the direction of blown air, and a normal blowout mode in which only the first wind direction adjusting plate 31 is rotated to adjust the direction of blown air.
- the first wind direction adjusting plate 31 and the second wind direction adjusting plate 32 are rotated, and the Coanda effect utilization mode is configured to change the blown air to the Coanda air flow along the outer surface 32a of the second wind direction adjusting plate 32 by the Coanda effect;
- the first air direction adjusting plate 31 and the second air direction adjusting plate 32 have a lower blowing mode in which the leading ends of the first air direction adjusting plate 31 and the second air direction adjusting plate 32 are directed downward and the blowing air is guided downward.
- the normal blowout mode is a mode in which only the first wind direction adjusting plate 31 is rotated to adjust the direction of the blown air, and “normal forward blow” and “normal forward lower blow” are performed. Including. (3-1-1) Normal Front Blow FIG.
- FIG. 3A is a side view of the first wind direction adjusting plate 31 and the second wind direction adjusting plate 32 when the blown air is normally forward blown.
- the control unit 40 rotates the first wind direction adjusting plate 31 to a position where the inner side surface 31 b of the first wind direction adjusting plate 31 becomes substantially horizontal.
- the inner side surface 31b of the first wind direction adjusting plate 31 has an arcuate curved surface as in the present embodiment, the first wind direction adjusting plate 31 is moved until the tangent at the front end E1 of the inner side surface 31b becomes substantially horizontal. Rotate. As a result, the blown air is in a front blowing state.
- FIG. 3B is a side view of the first wind direction adjusting plate 31 and the second wind direction adjusting plate 32 when the blown air is normally forward down blown.
- the control part 40 rotates the 1st wind direction adjustment board 31 until the tangent in the front end E1 of the inner surface 31b of the 1st wind direction adjustment board 31 becomes a front drop rather than horizontal. As a result, the blown air is in a front lower blowing state.
- Coanda (effect) means that if there is a wall near the flow of gas or liquid, it flows in the direction along the wall surface even if the direction of the flow is different from the direction of the wall. It is a phenomenon to try (Asakura Shoten “Dictionary of Law”).
- the Coanda utilization mode includes “Coanda airflow front blowing” and “Coanda airflow ceiling blowing” using this Coanda effect.
- FIG. 4A is a conceptual diagram showing the direction of blown air and the direction of Coanda airflow.
- the inclination of the direction (D1) of the blown air changed by the first wind direction adjusting plate 31 is the second wind direction adjusting plate 32. It is necessary to be close to the posture (tilt). If they are too far apart, the Coanda effect will not occur.
- the second wind direction adjusting plate 32 and the first wind direction adjusting plate 31 need to be less than a predetermined opening angle, so that both adjusting plates (31, 32) are within the range.
- the above relationship is established.
- FIG. 4B is a conceptual diagram illustrating an example of an opening angle between the first wind direction adjusting plate 31 and the second wind direction adjusting plate 32.
- the angle between the straight line connecting the front and rear ends of the inner side surface 31 b of the first wind direction adjusting plate 31 and the horizontal line is the inclination angle ⁇ 1 of the first wind direction adjusting plate 31, and the front and rear sides of the outer side surface 32 a of the second wind direction adjusting plate 32.
- the first wind direction adjusting plate 31 and the second wind direction adjusting plate 32 have an inner angle formed by the tangent to the end F of the scroll 17 and the second wind direction adjusting plate 32. It is preferable to take a posture that satisfies the condition that it is larger than the internal angle formed by the tangent to the end F of the scroll 17 and the first airflow direction adjusting plate 31. 5A (the inner angle R2 formed by the tangent L0 of the end F of the scroll 17 and the second airflow direction adjusting plate 32 when the Coanda airflow is blown forward, and the tangent L0 of the end F of the scroll 17 and the first airflow direction adjustment.
- FIG. 5B comparative diagram with the inner angle R1 formed by the plate 31
- FIG. 5B the inner angle R2 formed by the tangent L0 of the end F of the scroll 17 and the second wind direction adjusting plate 32 when the Coanda airflow ceiling is blown, and the end F of the scroll 17 (Refer to the comparison diagram of the internal angle R1 formed by the tangent L0 and the first wind direction adjusting plate 31).
- 3C is a side view of the first wind direction adjusting plate 31 and the second wind direction adjusting plate 32 when the Coanda airflow forward blow is performed.
- the control unit 40 performs the first wind direction until the tangent L1 at the front end E1 of the inner side surface 31b of the first wind direction adjusting plate 31 is lowered from the front. The adjustment plate 31 is rotated.
- the control part 40 rotates the 2nd wind direction adjustment board 32 to the position where the outer surface 32a of the 2nd wind direction adjustment board 32 becomes substantially horizontal.
- the outer surface 32a of the second wind direction adjusting plate 32 has an arcuate curved surface as in the present embodiment, the second wind direction adjusting plate 32 is maintained until the tangent L2 at the front end E2 of the outer surface 32a becomes substantially horizontal. Rotate. That is, as shown in FIG. 5A, the inner angle R2 formed by the tangent line L0 and the tangent line L2 is larger than the inner angle R1 formed by the tangent line L0 and the tangent line L1.
- the blown air adjusted to the front lower blow by the first wind direction adjusting plate 31 becomes a flow adhering to the outer side surface 32a of the second wind direction adjusting plate 32 by the Coanda effect, and changes to a Coanda air flow along the outer side surface 32a. Therefore, even if the tangent L1 direction at the front end E1 of the first wind direction adjusting plate 31 is a forward downward blow, the tangential L2 direction at the front end E2 of the second wind direction adjusting plate 32 is horizontal, so that the blown air has a Coanda effect. Is blown out in the tangential L2 direction at the front end E2 of the outer surface 32a of the second wind direction adjusting plate 32, that is, in the horizontal direction.
- the second wind direction adjusting plate 32 is separated from the front surface of the indoor unit and the inclination becomes gentle, and the blown air becomes more susceptible to the Coanda effect in front of the front panel 11b.
- the blown air whose wind direction is adjusted by the first wind direction adjusting plate 31 is the front lower blow, it becomes horizontal blown air due to the Coanda effect.
- Patent Document 1 the conventional method in which the air immediately after passing through the air outlet is brought close to the front panel and is directed upward by the Coanda effect of the front panel. While the wind direction is changed.
- 3D is a side view of the first wind direction adjusting plate 31 and the second wind direction adjusting plate 32 when the Coanda airflow ceiling blows.
- the control unit 40 rotates the first wind direction adjusting plate 31 until the tangent L1 at the front end E1 of the inner side surface 31b of the first wind direction adjusting plate 31 becomes horizontal. Move.
- the control part 40 rotates the 2nd wind direction adjustment board 32 until the tangent L2 in the front end E2 of the outer side surface 32a becomes front upward. That is, as shown in FIG. 5B, the inner angle R2 formed by the tangent line L0 and the tangent line L2 is larger than the inner angle R1 formed by the tangent line L0 and the tangent line L1.
- the blown air adjusted to be blown horizontally by the first wind direction adjusting plate 31 becomes a flow adhering to the outer surface 32a of the second wind direction adjusting plate 32 due to the Coanda effect, and changes to a Coanda airflow along the outer surface 32a.
- the second wind direction adjusting plate 32 is separated from the front surface of the indoor unit and the inclination becomes gentle, and the blown air becomes more susceptible to the Coanda effect in front of the front panel 11b.
- the pressure loss due to the ventilation resistance of the first air direction adjusting plate 31 is suppressed as compared with the conventional method (Patent Document 1) in which the air immediately after passing through the air outlet is brought close to the front panel and is directed upward by the Coanda effect of the front panel. While the wind direction is changed.
- the blown air is guided toward the ceiling while the air outlet 15 is open. That is, the blown air is guided toward the ceiling in a state where the ventilation resistance is kept low.
- the longitudinal dimension of the second wind direction adjusting plate 32 is equal to or larger than the longitudinal dimension of the first wind direction adjusting plate 31. Therefore, all of the blown air whose air direction is adjusted by the first air direction adjusting plate 31 can be received by the second air direction adjusting plate 32, and short circuit of the air blowing from the side of the second air direction adjusting plate 32 is prevented. There is also an effect that.
- FIG. 3E is a side view of the first wind direction adjusting plate 31 and the second wind direction adjusting plate 32 during down blowing.
- the control unit 40 rotates the first wind direction adjusting plate 31 until the tangent at the front end E1 of the inner side surface 31b of the first wind direction adjusting plate 31 is directed downward.
- the control part 40 rotates the 2nd wind direction adjustment board 32 until the tangent in the front end E2 of the outer surface 32a turns downward.
- the blown air passes between the first wind direction adjusting plate 31 and the second wind direction adjusting plate 32 and is blown downward.
- the control unit 40 executes the down blowing mode so that the second wind direction adjusting plate 32 is applied to the outer surface 32 a. Can generate a downward air flow.
- the control unit 40 executes the Coanda effect use mode, whereby the blown air whose wind direction is adjusted by the first wind direction adjusting plate 31 is separated from the front surface of the indoor unit by the Coanda effect.
- a Coanda airflow that flows along the lower surface of the substrate can be obtained.
- the blown air is guided in a predetermined direction with the airflow resistance kept low, while the air outlet 15 remains open compared to the conventional configuration that generates the airflow along the front panel 11b.
- the first wind direction adjusting plate 31 and the second wind direction adjusting plate 32 have an inner angle formed by the tangent to the terminal end of the scroll 17 and the second wind direction adjusting plate 32. , Larger than the inner angle formed by the tangent line of the end portion of the scroll 17 and the first wind direction adjusting plate 31 ”. As a result, the blown air is directed to the ceiling surface and delivered far along the ceiling surface.
- the tip of the second wind direction adjusting plate 32 faces forward upward from the horizontal. As a result, even if the blown air whose airflow direction is adjusted by the first airflow direction adjusting plate 31 is horizontal or slightly downward, it becomes upward air due to the Coanda effect, so that the air immediately after passing through the air outlet 15 is forced upward. Therefore, the wind direction is changed while the pressure loss due to the ventilation resistance of the first wind direction adjusting plate 31 is suppressed.
- the tip of the second air direction adjusting plate 32 is located above the air outlet. As a result, the generation of an air current that passes above the second wind direction adjusting plate is suppressed, and the upward guidance of the Coanda air current is less likely to be inhibited.
- the height position of the rear end portion of the second wind direction adjusting plate 32 is lower than when the operation is stopped.
- the rear end portion of the second air direction adjusting plate 32 enters the upstream side of the traveling path of the blown air whose air direction has been adjusted by the first air direction adjusting plate 31, and the Coanda airflow due to the Coanda effect on the upstream side is easily generated.
- the tip of the second air direction adjusting plate 32 projects outward from the air outlet. As a result, the Coanda airflow can be made to reach further away.
- the dimension in the longitudinal direction of the second wind direction adjusting plate 32 is equal to or larger than the dimension in the longitudinal direction of the first wind direction adjusting plate 31.
- all the blown air whose air direction has been adjusted by the first air direction adjusting plate 31 can be received by the second air direction adjusting plate 32, and short circuit of the air being blown from the side of the second air direction adjusting plate 32 is prevented.
- the (4-9) since the 2nd wind direction adjustment board 32 rotates centering on the rotating shaft provided in the place remove
- control unit 40 has a lower blowing mode in which the leading ends of the first wind direction adjusting plate 31 and the second wind direction adjusting plate 32 are directed downward and the blowing air is guided downward.
- the control unit 40 executes the down blowing mode, so that the second wind direction adjusting plate 32 extends along the outer surface 32 a. A downward airflow is generated.
- the present invention is particularly useful for a wall-mounted air conditioning indoor unit because the blown air can be guided in a predetermined direction without making the air outlet 15 obstructive.
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Abstract
Description
本発明の課題は、圧力損失をそれほど大きくすることなく吹出空気を所定方向に誘導することができる空調室内機を提供することにある。
この空調室内機では、吹出空気がスクロールの終端部の接線方向から大幅に偏向されることが可能となる。それゆえ、吹出空気が天井面に向けられ、且つ天井面に沿って遠くまで届けられる。
この空調室内機では、第1風向調整板で風向調節された吹出空気が水平、若しくは、やや下向きであってもコアンダ効果によって上向きの空気となるので、吹出口通過直後の空気が無理に上向きにされる必要がない。つまり、第1風向調整板の通風抵抗による圧損が抑制されつつ風向が変更される。
例えば、第2風向調整板の先端が送風路内にある場合、第2風向調整板の下面に沿ったコアンダ気流が第2風向調整板の上側を通過した吹出空気と干渉し、上向きの気流の進行が阻害される可能性がある。
これに対し、この空調室内機では、第2風向調整板の先端部が吹出口よりも上方に位置するため、第2風向調整板の上側で強い気流の発生は抑制される。それゆえ、コアンダ気流の上方への誘導が阻害されにくくなる。
この空調室内機では、第2風向調整板の後端部が第1風向調整板で風向調節された吹出空気の進行路上流側に進入するので、後端部が不動のタイプとの比較において、より上流側でのコアンダ効果によるコアンダ気流が生成し易くなる。
この空調室内機では、第2風向調整板の先端部が吹出口より外側に突出することによって、コアンダ気流がより遠方に到達するようになる。
この空調室内機では、コアンダ気流が吸込口から遠ざかるので、ショートサーキットが防止される。
この空調室内機では、第1風向調整板で風向調節された吹出空気すべてを第2風向調整板が受けるので、第2風向調整板の側方から吹出空気がショートサーキットすることが防止される。
この空調室内機では、第2風向調整板は、回動によって、後端部の高さ位置が運転停止時よりも低くなる姿勢をとる。それゆえ、後端部が第1風向調整板で風向調節された吹出空気の進行路の上流側に進入するので、より上流側で、コアンダ効果によるコアンダ気流が生成し易くなる。
この空調室内機では、下吹きモードでは、風向をより下向きにすることができる。特に、第1風向調整板がスクロールの終端部の接線方向より下向きになったときなどは、第1風向調整板だけでは風向制御が容易ではないが、第2風向調整板があることによって下向きの気流が生成され易くなる。
この空調室内機では、コアンダ効果利用モードを実行することによって、第1風向調整板で風向調節された吹出空気をコアンダ効果によって室内機前面部から離れた第2風向調整板の下面に沿って流れるコアンダ気流にすることができる。その結果、前面パネルに沿わせた気流を生じさせる従来構成と比べて、吹出口が開き気味のまま、吹出空気が所定方向へ誘導されることが可能となる。つまり、通風抵抗が低く保たれた状態で吹出空気が所定方向へ誘導される。
本発明の第2観点に係る空調室内機では、吹出空気がスクロールの終端部の接線方向から大幅に偏向されることが可能となる。それゆえ、吹出空気が天井面に向けられ、且つ天井面に沿って遠くまで届けられる。
本発明の第3観点に係る空調室内機では、第1風向調整板で風向調節された吹出空気が水平、若しくは、やや下向きであってもコアンダ効果によって上向きの空気となるので、吹出口通過直後の空気が無理に上向きにされる必要がない。つまり、第1風向調整板の通風抵抗による圧損が抑制されつつ風向が変更される。
本発明の第5観点に係る空調室内機では、第2風向調整板の後端部が第1風向調整板で風向調節された吹出空気の進行路上流側に進入するので、後端部が不動のタイプとの比較において、より上流側でのコアンダ効果によるコアンダ気流が生成し易くなる。
本発明の第6観点に係る空調室内機では、第2風向調整板の先端部が吹出口より外側に突出することによって、コアンダ気流がより遠方に到達するようになる。
本発明の第7観点に係る空調室内機では、コアンダ気流が吸込口から遠ざかるので、ショートサーキットが防止される。
本発明の第9観点に係る空調室内機では、第2風向調整板は、回動によって、後端部の高さ位置が運転停止時よりも低くなる姿勢をとる。それゆえ、後端部が第1風向調整板で風向調節された吹出空気の進行路の上流側に進入するので、より上流側で、コアンダ効果によるコアンダ気流が生成し易くなる。
本発明の第10観点に係る空調室内機では、下吹きモードでは、風向をより下向きにすることができる。特に、第1風向調整板がスクロールの終端部の接線角度より下向きになったときなどは、第1風向調整板だけでは風向制御が容易ではないが、第2風向調整板があることによって下向きのコアンダ気流が生成され易くなる。
(1)空調室内機10の構成
図1は、本発明の一実施形態に係る運転停止時の空調室内機10の断面図である。また、図2は、運転時の空調室内機10の断面図である。図1及び図2において、空調室内機10は壁掛けタイプであり、本体ケーシング11、室内熱交換器13、室内ファン14、底フレーム16、及び制御部40が搭載されている。
本体ケーシング11は、天面部11a、前面パネル11b、背面板11c及び下部水平板11dを有し、内部に室内熱交換器13、室内ファン14、底フレーム16、及び制御部40を収納している。
前面パネル11bは室内機の前面部を構成しており、吸込口がないフラットな形状を成している。また、前面パネル11bは、その上端が天面部11aに回動自在に支持され、ヒンジ式に動作することができる。
室内熱交換器13及び室内ファン14は、底フレーム16に取り付けられている。室内熱交換器13は、通過する空気との間で熱交換を行う。また、室内熱交換器13は、側面視において両端が下方に向いて屈曲する逆V字状の形状を成し、その下方に室内ファン14が位置する。室内ファン14は、クロスフローファンであり、室内から取り込んだ空気を、室内熱交換器13に当てて通過させた後、室内に吹き出す。
また、吹出口15の近傍には第2風向調整板32が設けられている。第2風向調整板32は、モータ(図示せず)によって前後方向に傾斜した姿勢をとることが可能であり、運転停止時に前面パネル11bに設けられた収容部130に収容される。第2風向調整板32は、傾斜角が異なる複数の姿勢をとることが可能である。
また、吹出口15は、吹出流路18によって本体ケーシング11の内部と繋がっている。吹出流路18は、吹出口15から底フレーム16のスクロール17に沿って形成されている。
制御部40は、本体ケーシング11を前面パネル11bから視て室内熱交換器13及び室内ファン14の右側方に位置しており、室内ファン14の回転数制御、第1風向調整板31及び第2風向調整板32の動作制御を行う。
(2)詳細構成
(2-1)前面パネル11b
図1に示すように、前面パネル11bは本体ケーシング11の上部前方からなだらかな円弧曲面を描きながら下部水平板11dの前方エッジに向かって延びている。前面パネル11bの下部に本体ケーシング11の内側に向かって窪んだ領域がある。この領域の窪み深さは第2風向調整板32の厚み寸法に合うように設定されており、第2風向調整板32が収容される収容部130を成している。収容部130の表面もなだらかな円弧曲面である。
図1に示すように、吹出口15は、本体ケーシング11の下部に形成されており、横方向(図1紙面と直交する方向)を長辺とする長方形の開口である。吹出口15の下端は下部水平板11dの前方エッジに接しており、吹出口15の下端と上端とを結ぶ仮想面は前方上向きに傾斜している。
(2-3)スクロール17
スクロール17は、室内ファン14に対峙するように湾曲した隔壁であり、底フレーム16の一部である。スクロール17の終端Fは、吹出口15の周縁近傍まで到達している。吹出流路18を通る空気は、スクロール17に沿って進み、スクロール17の終端Fの接線方向に送られる。したがって、吹出口15に第1風向調整板31がなければ、吹出口15から吹き出される吹出空気の風向は、スクロール17の終端Fの接線L0に概ね沿った方向である。
垂直風向調整板20は、図1及び図2に示すように、複数の羽根片201と、複数の羽根片201を連結する連結棒203を有している。また、垂直風向調整板20は、吹出流路18において、第1風向調整板31よりも室内ファン14近傍に配置されている。
複数枚の羽根片201は、連結棒203が吹出口15の長手方向に沿って水平往復移動することによって、その長手方向に対して垂直な状態を中心に左右に揺動する。なお、連結棒203は、モータ(図示せず)によって水平往復移動する。
(2-5)第1風向調整板31
第1風向調整板31は、吹出口15を塞ぐことができる程度の面積を有している。第1風向調整板31が吹出口15を閉じた状態において、その外側面31aは前面パネル11bの曲面の延長上にあるような外側に凸のなだらかな円弧曲面に仕上げられている。また、第1風向調整板31の内側面31b(図2参照)も、外面にほぼ平行な円弧曲面を成している。
回動軸311が図1正面視反時計方向に回動することによって、第1風向調整板31の上端が吹出口15の上端側から遠ざかるように動作して吹出口15を開ける。逆に、回動軸311が図1正面視時計方向に回動することによって、第1風向調整板31の上端が吹出口15の上端側へ近づくように動作して吹出口15を閉じる。
第1風向調整板31が吹出口15を開けている状態において、吹出口15から吹き出された吹出空気は、第1風向調整板31の内側面31bに概ね沿って流れる。すなわち、スクロール17の終端Fの接線方向に概ね沿って吹き出された吹出空気は、その風向が第1風向調整板31によってやや上向きに変更される。
第2風向調整板32は、空調運転が停止している間や後述する通常吹出モードでの運転では収容部130に収納されている。第2風向調整板32は回動することによって収容部130から離れる。第2風向調整板32の回動軸321は、収容部130の下端近傍で且つ本体ケーシング11の内側の位置(吹出流路18上壁の上方の位置)に設けられており、第2風向調整板32の下端部と回動軸321とは所定の間隔を保って連結されている。それゆえ、回動軸321が回動して第2風向調整板32が室内機前面部の収容部130から離れるほど、第2風向調整板32の下端の高さ位置は低くなるように回転する。また、第2風向調整板32が回転して開いたときの傾斜は室内機前面部の傾斜よりも緩やかである。
また、回動軸321が図1正面視反時計方向に回動することによって、第2風向調整板32の上端および下端ともに円弧を描きながら収容部130から離れるが、そのとき、上端と吹出口より上方の室内機前面部の収容部130との最短距離は、下端と収容部130との最短距離より大きい。すなわち、第2風向調整板32は前方に行くにしたがって前記室内機前面部から離れるような姿勢に制御される。そして、回動軸321が図1正面視時計方向に回動することによって、第2風向調整板32は収容部130に近づき、最終的に収容部130に収容される。第2風向調整板32の運転状態の姿勢としては、収容部130に収納された状態、回転して前方上向きに傾斜した姿勢、さらに回転してほぼ水平な姿勢、さらに回転して前方下向きに傾斜した姿勢がある。
また、第2風向調整板32の長手方向の寸法は、第1風向調整板31の長手方向の寸法以上となるように設定されている。この理由は第1風向調整板31で風向調節された吹出空気すべてを第2風向調整板32で受けるためであり、その目的は第2風向調整板32の側方からの吹出空気がショートサーキットすることを防止することである。
(3)吹出空気の方向制御
本実施形態の空調室内機は、吹出空気の方向を制御する手段として、第1風向調整板31のみを回動させて吹出空気の方向を調整する通常吹出モードと、第1風向調整板31及び第2風向調整板32を回動させてコアンダ効果によって吹出空気を第2風向調整板32の外側面32aに沿わせたコアンダ気流にするコアンダ効果利用モードと、第1風向調整板31及び第2風向調整板32それぞれの先端を前方下向きにして吹出空気を下方に導く下吹きモードを有している。
(3-1)通常吹出モード
通常吹出モードは、第1風向調整板31のみを回動させて吹出空気の方向を調整するモードであり、「通常前吹き」と「通常前方下吹き」とを含む。
(3-1-1)通常前吹き
図3Aは、吹出空気が通常前吹き時の第1風向調整板31及び第2風向調整板32の側面図である。図3Aにおいて、ユーザーが「通常前吹き」を選択したとき、制御部40は第1風向調整板31の内側面31bが略水平になる位置まで第1風向調整板31を回動させる。なお、本願実施形態のように第1風向調整板31の内側面31bが円弧曲面をなしている場合は、内側面31bの前方端E1における接線が略水平になるまで第1風向調整板31を回動させる。その結果、吹出空気は、前吹き状態となる。
図3Bは、吹出空気が通常前方下吹き時の第1風向調整板31及び第2風向調整板32の側面図である。図3Bにおいて、ユーザーは吹出方向を「通常前吹き」よりも下方に向けたいとき、「通常前方下吹き」を選択すればよい。
このとき、制御部40は、第1風向調整板31の内側面31bの前方端E1における接線が水平よりも前下がりになるまで第1風向調整板31を回動させる。その結果、吹出空気は、前方下吹き状態となる。
(3-2)コアンダ効果利用モード
コアンダ(効果)とは、気体や液体の流れのそばに壁があると、流れの方向と壁の方向とが異なっていても、壁面に沿った方向に流れようとする現象である(朝倉書店「法則の辞典」)。コアンダ利用モードは、このコアンダ効果を利用した「コアンダ気流前方吹き」および「コアンダ気流天井吹き」を含む。
また、第1風向調整板31と第2風向調整板32との開き角度については、基準位置の取り方次第で定義の方法が異なるが、以下に一例を示す。図4Bは、第1風向調整板31と第2風向調整板32との開き角度の一例を表す概念図である。図4Bにおいて、第1風向調整板31の内側面31bの前後端を結ぶ直線と水平線との角度を第1風向調整板31の傾斜角θ1とし、第2風向調整板32の外側面32aの前後端を結ぶ直線と水平線との角度を第2風向調整板32の傾斜角θ2としたとき、第1風向調整板31と第2風向調整板32との開き角度θ=θ2-θ1である。なお、θ1及びθ2は絶対値ではなく、図4B正面視において水平線よりも下方となる場合は負の値である。
なお、内角については、図5A(コアンダ気流前方吹き時のスクロール17の終端Fの接線L0と第2風向調整板32とが成す内角R2と、スクロール17の終端Fの接線L0と第1風向調整板31とが成す内角R1との比較図)、および図5B(コアンダ気流天井吹き時のスクロール17の終端Fの接線L0と第2風向調整板32とが成す内角R2と、スクロール17の終端Fの接線L0と第1風向調整板31とが成す内角R1との比較図)を参照のこと。
また、第2風向調整板32の後端部の高さ位置は運転停止時よりも低くなっているので、上流側でのコアンダ効果によるコアンダ気流が生成し易い。
(3-2-1)コアンダ気流前方吹き
図3Cは、コアンダ気流前方吹き時の第1風向調整板31及び第2風向調整板32の側面図である。図3Cにおいて、「コアンダ気流前方吹き」が選択されたとき、制御部40は、第1風向調整板31の内側面31bの前方端E1における接線L1が水平よりも前下がりになるまで第1風向調整板31を回動させる。
第1風向調整板31で前方下吹きに調整された吹出空気は、コアンダ効果によって第2風向調整板32の外側面32aに付着した流れとなり、この外側面32aに沿ったコアンダ気流に変わる。
したがって、第1風向調整板31の前方端E1における接線L1方向が前方下吹きであっても、第2風向調整板32の前方端E2における接線L2方向が水平であるので、吹出空気は、コアンダ効果によって第2風向調整板32の外側面32aの前方端E2における接線L2方向、すなわち水平方向に吹き出される。
(3-2-2)コアンダ気流天井吹き
図3Dは、コアンダ気流天井吹き時の第1風向調整板31及び第2風向調整板32の側面図である。図3Dにおいて、「コアンダ気流天井吹き」が選択されたとき、制御部40は第1風向調整板31の内側面31bの前方端E1における接線L1が水平になるまで第1風向調整板31を回動させる。
したがって、第1風向調整板31の前方端E1における接線L1方向が前方吹きであっても、第2風向調整板32の前方端E2における接線L2方向が前方上吹きであるので、吹出空気は、コアンダ効果によって第2風向調整板32の外側面32aの前方端E2における接線L2方向、すなわち天井方向に吹き出される。第2風向調整板32の先端部は吹出口15より外側に突出しているので、コアンダ気流はより遠方に到達する。さらに、第2風向調整板32の先端部は吹出口15よりも上方に位置しているので、第2風向調整板の上側を通過するような気流の発生は抑制され、コアンダ気流の上方への誘導が阻害されにくい。
その結果、前面パネルに沿わせた気流を生じさせる特許文献1に記載の発明と比べて、吹出口15が開き気味のまま、吹出空気が天井方向へ誘導される。つまり、通風抵抗が低く保たれた状態で吹出空気が天井方向へ誘導される。
なお、第2風向調整板32の長手方向の寸法は、第1風向調整板31の長手方向の寸法以上である。それゆえ、第1風向調整板31で風向調節された吹出空気すべてを第2風向調整板32で受けることができ、第2風向調整板32の側方から吹出空気がショートサーキットすることが防止されるという効果も奏している。
図3Eは、下吹き時の第1風向調整板31及び第2風向調整板32の側面図である。図3Eにおいて、「下吹き」が選択されたとき、制御部40は第1風向調整板31の内側面31bの前方端E1における接線が下向きなるまで第1風向調整板31を回動させる。
次に、制御部40は、外側面32aの前方端E2における接線が下向きとなるまで第2風向調整板32を回動させる。その結果、吹出空気は、第1風向調整板31と第2風向調整板32との間を通過し、下向きに吹き出される。
特に、第1風向調整板31がスクロール17の終端部の接線角度より下向きになったときでも、制御部40が下吹きモードを実行することによって、第2風向調整板32の外側面32aに当てて下向きの気流を生成することができる。
(4-1)
空調室内機10では、制御部40がコアンダ効果利用モードを実行することによって、第1風向調整板31で風向調節された吹出空気をコアンダ効果によって室内機前面部から離れた第2風向調整板32の下面に沿って流れるコアンダ気流にすることができる。その結果、前面パネル11bに沿わせた気流を生じさせる従来構成と比べて、吹出口15が開き気味のまま、通風抵抗が低く保たれた状態で吹出空気が所定方向へ誘導される。
(4-2)
また、制御部40がコアンダ効果利用モードを実行するとき、「第1風向調整板31および第2風向調整板32は、スクロール17の終端部の接線と第2風向調整板32とが成す内角が、スクロール17の終端部の接線と第1風向調整板31とが成す内角よりも大きい」、という条件を満たす姿勢をとる。その結果、吹出空気が天井面に向けられ、且つ天井面に沿って遠くまで届けられる。
また、コアンダ効果利用モードにおいて、第2風向調整板32の先端部は水平より前方上向きとなる。その結果、第1風向調整板31で風向調節された吹出空気が水平、若しくは、やや下向きであってもコアンダ効果によって上向きの空気となるので、吹出口15通過直後の空気が無理に上向きにされる必要がなく、第1風向調整板31の通風抵抗による圧損が抑制されつつ風向が変更される。
(4-4)
また、コアンダ効果利用モードにおいて、第2風向調整板32の先端部は吹出口よりも上方に位置する。その結果、第2風向調整板の上側を通過するような気流の発生は抑制され、コアンダ気流の上方への誘導が阻害されにくくなる。
また、コアンダ効果利用モードにおいて、第2風向調整板32の後端部の高さ位置は運転停止時よりも低くなる。その結果、第2風向調整板32の後端部が第1風向調整板31で風向調節された吹出空気の進行路上流側に進入し、上流側でのコアンダ効果によるコアンダ気流が生成し易くなる。
(4-6)
また、コアンダ効果利用モードにおいて、第2風向調整板32の先端部は吹出口より外側に突出する。その結果、コアンダ気流をより遠方に到達させることができる。
(4-7)
また、第2風向調整板32先端と本体ケーシング11との最短距離は、第2風向調整板32後端と本体ケーシング11との最短距離よりも大きい。その結果、コアンダ気流が吸込口から遠ざかるので、ショートサーキットが防止される。
また、第2風向調整板32の長手方向の寸法は、第1風向調整板31の長手方向の寸法以上である。その結果、第1風向調整板31で風向調節された吹出空気すべてを第2風向調整板32で受けることができ、第2風向調整板32の側方から吹出空気がショートサーキットすることが防止される。
(4-9)
また、第2風向調整板32が、送風路から外れた場所に設けられた回動軸を中心に回動するので、後端部の高さ位置が運転停止時よりも低くなる。それゆえ、後端部が第1風向調整板31で風向調節された吹出空気の進行路の上流側に進入し、より上流側で、コアンダ効果によるコアンダ気流が生成し易くなる。
また、制御部40は、第1風向調整板31および第2風向調整板32それぞれの先端を前方下向きにして吹出空気を下方に導く下吹きモードを有している。第1風向調整板31がスクロール17の終端部の接線角度より下向きになったときなどは、制御部40が下吹きモードを実行することによって、第2風向調整板32の外側面32aに沿った下向きの気流が生成される。
15 吹出口
17 スクロール
31 第1風向調整板
32 第2風向調整板
40 制御部
130 収容部
321 回動軸
Claims (12)
- 吹出口(15)から吹き出される吹出空気の流れをコアンダ効果により所定の方向へ誘導するコアンダ効果利用モードを有する空調室内機であって、
前記吹出空気の上下方向を変更する可動の第1風向調整板(31)と、
前記吹出口(15)の近傍に設けられ、収容時に少なくとも先端部が送風路の外側において室内機前面部に収容される第2風向調整板(32)と、
前記第1風向調整板(31)及び前記第2風向調整板(32)の姿勢を制御する制御部(40)と、
を備え、
前記コアンダ効果利用モードにおいて、前記制御部(40)は、前記第2風向調整板(32)が前記室内機前面部から離間した姿勢をとると共に前記第2風向調整板(32)と前記第1風向調整板(31)とが所定角度を成すように前記第1風向調整板(31)及び前記第2風向調整板(32)の姿勢を制御して、前記吹出空気を前記第2風向調整板(32)の下面に沿わせたコアンダ気流にする、
空調室内機(10)。 - 空気調和された空気を前記吹出口(15)まで導くスクロール(17)をさらに備え、
前記制御部(40)が前記コアンダ効果利用モードを実行するとき、前記第1風向調整板(31)及び前記第2風向調整板(32)は、
前記スクロール(17)の終端部の接線と前記第2風向調整板(32)とが成す内角が、前記スクロール(17)の終端部の接線と前記第1風向調整板(31)とが成す内角よりも大きい、
という条件を満たす姿勢をとる、
請求項1に記載の空調室内機(10)。 - 前記コアンダ効果利用モードにおいて、前記第2風向調整板(32)の先端部は水平より前方上向きとなる、
請求項1又は請求項2に記載の空調室内機(10)。 - 前記コアンダ効果利用モードにおいて、前記第2風向調整板(32)の先端部は前記吹出口(15)よりも上方に位置する、
請求項3に記載の空調室内機(10)。 - 前記コアンダ効果利用モードにおいて、前記第2風向調整板(32)の後端部の高さ位置は運転停止時よりも低くなる、
請求項1から請求項4のいずれか1項に記載の空調室内機(10)。 - 前記コアンダ効果利用モードにおいて、前記第2風向調整板(32)の先端部は前記吹出口(15)より外側に突出する、
請求項1から請求項5のいずれか1項に記載の空調室内機(10)。 - 前記コアンダ効果利用モードにおいて、前記第2風向調整板(32)は前方に行くにしたがって前記室内機前面部から離れるような姿勢に制御される、
請求項6に記載の空調室内機(10)。 - 前記第2風向調整板(32)の長手方向の寸法は、前記第1風向調整板(31)の長手方向の寸法以上である、
請求項1から請求項7のいずれか1項に記載の空調室内機(10)。 - 前記第2風向調整板(32)は所定の回動軸(321)を中心に回動し、
前記回動軸(321)は、前記送風路から外れた場所に設けられている、
請求項1から請求項8のいずれか1項に記載の空調室内機(10)。 - 前記制御部(40)は、前記第1風向調整板(31)及び前記第2風向調整板(32)それぞれの先端を前方下向きにして前記吹出空気を下方に導く、下吹きモードを有する、
請求項1に記載の空調室内機(10)。 - 運転停止時および運転時の前記室内機前面部の姿勢が同じである、
請求項1に記載の空調室内機(10)。 - 前記コアンダ効果利用モードにおいて、前記第2風向調整板(32)の後端が前記吹出空気の進行路に入り込む、
請求項1に記載の空調室内機(10)。
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AU2012318045A AU2012318045B2 (en) | 2011-09-30 | 2012-09-05 | Air conditioning indoor unit |
KR1020147011375A KR101425774B1 (ko) | 2011-09-30 | 2012-09-05 | 공조 실내기 |
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CN201280046848.7A CN103827594B (zh) | 2011-09-30 | 2012-09-05 | 空调室内机 |
EP12835047.7A EP2762795B1 (en) | 2011-09-30 | 2012-09-05 | Air-conditioning indoor unit |
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CN104949198A (zh) * | 2014-03-28 | 2015-09-30 | 三菱电机株式会社 | 空调机 |
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Also Published As
Publication number | Publication date |
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US20140227961A1 (en) | 2014-08-14 |
MY166480A (en) | 2018-06-27 |
EP2762795A1 (en) | 2014-08-06 |
US9234671B2 (en) | 2016-01-12 |
ES2793969T3 (es) | 2020-11-17 |
KR101425774B1 (ko) | 2014-08-04 |
CN103827594B (zh) | 2015-06-10 |
JP5365675B2 (ja) | 2013-12-11 |
SG11201401094UA (en) | 2014-09-26 |
AU2012318045B2 (en) | 2015-09-10 |
AU2012318045A1 (en) | 2014-05-15 |
BR112014007722A2 (pt) | 2017-08-08 |
EP2762795A4 (en) | 2014-08-06 |
KR20140059309A (ko) | 2014-05-15 |
IN2014KN00868A (ja) | 2015-10-02 |
EP2762795B1 (en) | 2020-03-04 |
US20160076786A1 (en) | 2016-03-17 |
JP2013076530A (ja) | 2013-04-25 |
CN103827594A (zh) | 2014-05-28 |
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