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
  • F24F1/0047—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in the ceiling or at the ceiling
• • 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

Definitions

• the present invention relates to a decorative panel, an air outlet unit, and an air conditioner of an air conditioner, and more particularly, to a horizontal blade provided at an air outlet to adjust a blowing direction of conditioned air, and the horizontal blade is provided. It relates to the structure of an air outlet. ⁇ .
• a horizontal blade capable of changing a blowing direction of conditioned air up and down is provided at an air outlet.
• the airflow direction of the conditioned air is made relatively downward during the heating operation by the horizontal blades, while it is made relatively upward during the cooling operation so as to be nearly parallel to the ceiling surface (so-called horizontal airflow).
• horizontal airflow the temperature distribution in the room is evened out to improve air conditioning efficiency.
• the air from the end of the air outlet (a) blows at a low speed due to the slow flow velocity and is attached to the ceiling surface (b) near the outlet (a) by the negative pressure.
• the dust in the slow airflow blown from the end of the air outlet (a) (the dust contained in the slow airflow from the end of the air outlet (a) and the slow airflow Roll the dust ) Adhere to the ceiling surface (b).
• the ceiling dirt is substantially V-shaped and is formed on both sides of the air outlet (a) such that the ceiling dirt moves from both ends of the air outlet (a) toward the center as the distance from the air outlet (a) increases. Many are distributed in the adjacent area (D) (see Fig. 2).
• an auxiliary fin for shifting the blowing direction to the ceiling surface is detachably provided on the horizontal blade, and the auxiliary fin is easily removed from the ceiling.
• a technology for attaching and detaching according to the conditions In the air conditioner described in this publication, for example, the auxiliary fins are removed in an environment where indoor air is likely to have a large amount of dust and ceiling dirt is likely to occur, or in places where there is a particularly high need for dirt prevention such as hospitals. While the blades face downward, auxiliary fins are installed in an environment where ceiling dirt is unlikely to occur or where dirt prevention is not required so that horizontal blowing can be performed.
• the auxiliary fins are provided as in the conventional example described above, the auxiliary fins must be removed in an environment where ceiling dirt is likely to occur, and in this case, the conditioned air always blows downward from the air outlet at this time.
• the cooling operation in which air should be blown out horizontally, not only does air-conditioning efficiency drop, but also the sense of discomfort (so-called draft feeling) due to the direct blow of cold air to people in the room. Also occurs.
• the opening length in the longitudinal direction of the air outlet (a) may be different between the body casing side and the decorative panel side as shown in FIG.
• the air outlet (a) has, at its longitudinal end, an enlarged portion that extends the length of the opening of the air passage in the longitudinal direction of the air outlet (a) at a portion facing the indoor space. (C) will be formed.
• the present invention has been made in view of such a problem, and an object of the present invention is to improve the shape of horizontal blades provided at an air outlet to improve the operating condition of an air conditioner. It is an object of the present invention to make it possible to set an appropriate blowing direction in accordance with the above, and also to prevent the ceiling surface from being stained when an enlarged portion is provided at the longitudinal end of the air outlet. Disclosure of the invention
• the present invention improves the horizontal blades so that the conditioned air is guided inside the enlarged portion of the air outlet in a direction substantially perpendicular to the longitudinal direction of the air outlet, so that the conditioned air does not easily flow into the enlarged portion. It was done.
• a solution taken by the present invention is to provide an air outlet (16) that blows out conditioned air from the ceiling surface (70) toward the indoor space, and the air outlet (16) is provided with air-conditioned air.
• a decorative panel and an air outlet unit of an air conditioner provided with horizontal blades (18) for adjusting the blowing direction; an air conditioner on which the decorative panel (14) is mounted along a ceiling surface; It is assumed that the air conditioner has a unit (51) attached to a ceiling surface and connected to an air conditioner body (53) through a ventilation duct (52).
• an enlarged portion (16L) is provided in which a longitudinal opening length is increased at a portion facing the indoor space, and the horizontal blade (18) is provided with an air blower.
• the air is guided in a direction substantially perpendicular to the longitudinal direction of the air outlet (16).
• the direction in which the conditioned air is guided is the direction that does not flow into the enlarged section (16L). In this case, the direction is not necessarily orthogonal (the same applies hereinafter).
• the horizontal blade (18) is provided at a position substantially corresponding to the inner end of the enlarged portion (16L) of the air outlet (16) in a direction substantially perpendicular to the longitudinal direction of the air outlet (16). (G).
• the guide means (18g) can be constituted by a guide plate provided on the upper surface (18f) of the horizontal blade (18) in the horizontal blowing state.
• the guide plate (18g) is preferably disposed along a direction substantially perpendicular to the longitudinal direction of the horizontal blade (18).
• the conditioned air may be inclined so as to be guided toward the center in the longitudinal direction of the air outlet (16).
• the conditioned air when the conditioned air is blown from the air outlet (16) toward the room, during the cooling operation, the conditioned air flows in the central portion of the air outlet (16) having a relatively high flow rate. Are guided in a substantially horizontal direction.
• the air-conditioned air hitting the horizontal blade (18) hardly flows into the enlarged portion (16L) by means of a guide plate or the like provided on the upper surface (18f) of the horizontal blade (18). It flows along the guide plate (18g) and is blown out almost horizontally at a high flow rate.
• part of the conditioned air that hits the horizontal blades (18) flows to the enlarged section (16L), but the amount is small, and the amount of air flowing out from the end of the air outlet (16) is small. .
• the flow rate of the conditioned air having a low initial blowing speed flowing along the ceiling surface decreases. Further, during the heating operation, by adjusting the horizontal blades (18) downward, the conditioned air is blown downward from the entire air outlet (16) into the room.
• the upstream edge of the airflow at the substantially longitudinal end (that is, the periphery of both ends) of the horizontal blade (18) substantially corresponds to the enlarged portion (16L) of the air outlet (16). It is preferable that the conditioned air pass through the region, and for example, an opening (18c) can be provided by cutting out a part of the horizontal blade (18).
• the conditioned air is guided in a substantially horizontal direction at the center of the air outlet (16), which has a relatively high flow rate, while the air flow rate is relatively low.
• the part is blown downward from the central part through an opening (18c) at the substantially end of the horizontal blade (18). Therefore, the flow rate of the conditioned air having a low initial velocity at the end of the air outlet (16) flows along the ceiling surface.
• the air outlet (16) has a side wall (16b-s) substantially corresponding to the enlarged portion (16L) at the longitudinal end and a side wall (16b-c) at the central portion in the longitudinal direction. It is also preferable that the air is blown downward from the air outlet.
• the angle of the side wall of the air outlet (16) with respect to the ceiling surface may be different between the center and the end in the longitudinal direction. Can be.
• the conditioned air is reliably blown downward at the longitudinal end of the air outlet (16) having a relatively low flow rate from the central portion in the longitudinal direction.
• the flow rate of the conditioned air having a low initial velocity flowing along the ceiling surface is reduced.
• the air flowing downward in the air passage (W) hardly hits the horizontal blade (18) and flows outward in the longitudinal direction (toward the enlarged portion (16)).
• the air at the end of the air outlet (16) is decelerated by this outward air flow and flows out sideways, and the air at the end of the air outlet (16) is reduced to a negative pressure at the center.
• the air at the end of the air outlet (16) hardly adheres to the ceiling surface (70), and dirt hardly occurs. It becomes. For this reason, especially in the cooling operation that requires the horizontal blowing of the conditioned air, the direction of the conditioned air blowing can be made closer to the horizontal direction than before, while preventing the ceiling surface (70) from being stained.
• the air-conditioning efficiency can be ensured and the sense of inconsistency (draft feeling) of indoor residents can be eliminated. Further, since the ceiling surface (70) is hardly soiled, the beauty of the ceiling surface (70) is not impaired, and cleaning is not required.
• the air-conditioning air is configured to pass through the airflow upstream edge near the longitudinal end of the horizontal blade (18), or the side wall (16b-s) of the longitudinal end of the air outlet (16) is formed.
• the air-conditioning air is blown downward from the side wall (16b-c) at the center in the longitudinal direction, so that the air-conditioned air is blown downward from the end of the air outlet (16). This, combined with the low air volume in this area, can reliably prevent dirt from adhering to the ceiling surface (70).
• FIG. 1 is a schematic sectional view of an air conditioner embedded in a ceiling according to an embodiment of the present invention.
• C FIG. 2 is a perspective view of the air conditioner installed on the ceiling as viewed from below.
• Fig. 3 is an enlarged structural diagram of the air outlet, showing the air-conditioning air blowing direction set to horizontal blowing.
• FIG. 4 is a diagram showing a state in which the blowing direction of the conditioned air in FIG. 3 is set to downward blowing.
• FIG. 5 is a perspective view of the air outlet viewed from below.
• FIG. 6 is a perspective view of the horizontal blade.
• FIG. 7 is a partial perspective view when an enlarged portion is provided in the air outlet.
• FIG. 8 is a schematic configuration diagram of a duct type air conditioner.
• 9A to 9D are perspective views showing the shape of the opening of the horizontal blade.
• FIG. 10 is an explanatory diagram showing a state of a blown airflow of conditioned air from an air outlet when the conventional air conditioner is viewed from the side.
• FIG. 11 is a partial perspective view of a conventional air conditioner in which an enlarged portion is provided at an air outlet.
• FIG. 1 is a longitudinal sectional view showing a configuration of an embedded ceiling air conditioner (1) according to the present embodiment.
• this air conditioner (1) has a casing (10) containing a fan (20) and a heat exchanger (30), and a ceiling plate (ceiling surface) (70). It is embedded in the installation opening (71) that opens in the ceiling and is installed in the space above the ceiling.
• the casing (10) includes a box-shaped main body casing (11) that opens downward and a decorative panel (14) that covers a bottom opening of the main body casing ( ⁇ ), not shown. Is suspended and fixed to an upper beam or the like by a suspension fitting. More specifically, the main body casing (11) includes a top plate (12) formed by cutting out four corners of a square into a chamfered shape to form an octagonal shape (not shown), and a lower portion extending from an outer edge of the top plate (12). And a side plate (13) extending to the front.
• the decorative panel (14) has a substantially square plate shape and is attached to the lower end of the side plate (13) of the main casing (11). The decorative panel (14) is mounted along the ceiling plate (70) such that the peripheral edge thereof abuts on the lower surface of the ceiling plate (70).
• FIG. 2 which is a perspective view of the state in which the air conditioner (1) is installed on the ceiling
• the air inlet ( 15) are formed, and four elongated air outlets (16) are formed along the outer sides of the four sides of the air inlet (15), respectively.
• the air inlet (15) is provided with an air filter (17) over its entire surface for removing suspended matters such as particulate dust contained in the room air.
• the entire lower surface of 17) is supported by a grid-shaped cover.
• the air outlet (16) of the decorative panel (14) is provided on the outer guide surface (16a, 16b) which is a side wall of the air passage on the outer peripheral side of the panel (right side in the figure).
• inner guide surfaces (16c, 16d) which are side walls on the inner peripheral side of the panel (left side in the figure).
• the outer guide surface (16a, 16b) has a first outer guide surface (16a) extending substantially vertically downward, and extends from the lower end of the first outer guide surface (16a) to the lower surface of the decorative panel (14) toward the panel outer peripheral side.
• a second outer guide surface (16b) inclined obliquely downward, and both outer guide surfaces (16a, 16b) are smoothly connected to each other.
• the second outer guide surface (16b) has a central portion (16b-c) located at a central portion in the longitudinal direction of the air outlet (16), and a relatively small angle (about 30 °) with respect to the ceiling surface (70). Degrees), while both ends (16b-s), which are located at both ends in the longitudinal direction of the air outlet (16), are relatively large angles (about 60 degrees) with respect to the ceiling surface (70). Is set to The inclination of the second outer guide surface (16b) gradually changes from the center (16b-c) toward both ends (16b-s), and the angle formed with the ceiling surface (70) changes continuously. ing. As shown in FIG. 5, which is a perspective view of the air outlet (16) viewed from below, the lower edge (16be) of the second outer guide surface (16b) is formed in an arc shape.
• the inner guide surfaces (16c, 16d) include a first inner guide surface (16c) extending substantially vertically downward, and a panel from the lower end of the first inner guide surface (16c).
• a second inner guide surface (16d) that is gently inclined downward toward the outer peripheral side, and both inner guide surfaces (16c, 16d) are smoothly connected to each other.
• the outer guide surfaces (16a, 16b) are formed on an outer member (14a) of the decorative panel (14), and the inner side inner surfaces (16c, 16d) are formed on an inner member (14b) of the decorative panel (14).
• the air outlet (16) is formed between the outer guide surfaces (16a, 16b) and the inner guide surfaces (16c, 16d) as described above. And, this air outlet (16), blowing direction to be adjusted up or down horizontal wings of the conditioned air (18), an outer guide surface of the outer member (14a) (16a 3 16b) and inner member (Mb) Between the inner guide surfaces (16c, 16d).
• the horizontal blade (18) is a long plate member as shown in FIG. 6, and is slightly curved in the width direction.
• the horizontal blade (18) is attached to the air outlet (16) so as to be swingable about the connecting pins (18b, 18b). More specifically, the horizontal blade (18) is configured to be swingable around the connection pin (18b, 18b) as a rotation center by a motor (not shown). In the above configuration, when the conditioned air is blown out most downward, the horizontal blades (18) are set downward as shown in Fig. 4. On the other hand, when a so-called horizontal blowing state is set, the horizontal blades (18) are set upward as shown in FIG.
• the outer guide surface (16a 3 16b) are (not necessarily in the shape of a curved, may be a generally along the shape in the horizontal vane (18)) of substantially the same manner to bend the cross-sectional shape of the horizontal vane (18) Single
• the inner guide surfaces (16c, 16d) are generally formed so as to extend vertically below the outer guide surfaces (16a, 16b) of the outer member (14a).
• the shape of the inner guide surfaces (16c, 16d) may be arbitrarily selected.
• the two opposing wall surfaces (outer guide surfaces (16a, 16b) and inner guide surfaces (16c, 16d)) having the above-described shapes are aligned in the longitudinal direction of the air outlet (16) (perpendicular to the paper surface). Direction), and the air passage sandwiched between both walls (16a, 16b) (16c, 16d) regulates the flow of conditioned air toward the air outlet (16). It has the function of a runway to change the direction of the road.
• the piping and the electrical component box are arranged at the corners in the main body casing (11).
• the shape of the opening is the same for all four.
• the opening length in the longitudinal direction of the air passage is different between the body casing (11) side and the decorative panel (14) side.
• the air outlet (16) has, at substantially both ends in the longitudinal direction, an enlarged portion (16L) that extends in the longitudinal direction of the air outlet (16) at a portion facing the indoor space in the opening length of the air passage. ) Is formed.
• the length of the enlarged portion (16L) varies depending on the air outlet (16) of the product.
• the second outer guide surface (16b) has a side wall (16b-s) of a region substantially corresponding to the enlarged portion (16L) and a side wall at the center in the longitudinal direction. It is formed with the above-mentioned angle setting so that the conditioned air is blown downward from (16b-c).
• the central part (16b-c) of the side wall (16b) located at the central part in the longitudinal direction of the air outlet (16) is at a relatively small angle (about 30 degrees) with respect to the ceiling surface (70).
• both ends (16b-s) of the side wall (16b) correspond to the ceiling surface (70) almost corresponding to the enlarged portions (16L) located at both ends in the longitudinal direction of the air outlet (16).
• Relatively large angle (approximately 60 degrees) Is set to
• the horizontal blade (18) directs the conditioned air in a direction substantially orthogonal to the longitudinal direction of the air outlet (16) at a position substantially corresponding to the inner end of the enlarged portion (16L) of the air outlet (16). It is configured to guide you. Specifically, the horizontal blade (18) is located at a position substantially corresponding to the inner end of the enlarged portion (16L) of the air outlet (16) in a direction substantially orthogonal to the longitudinal direction of the air outlet (16). (11 ⁇ 2).
• the guide means (i8g) is constituted by a guide plate (18g) provided on the upper surface (18f) of the horizontal blade (18) in a horizontal blowing state, and the guide plate (18g) is ) Are arranged along a direction substantially perpendicular to the longitudinal direction.
• the guide plate (18g) may be slightly inclined so as to guide the conditioned air toward the longitudinal center of the air outlet (16).
• a cutout (18c) is formed at the airflow upstream edge at substantially both ends in the longitudinal direction of the horizontal blade (18) as an opening through which the conditioned air passes.
• the notch (18c) is located in a region substantially corresponding to the enlarged portion (16L) of the air outlet (16), and specifically, has a length approximately one quarter of the longitudinal length of the horizontal blade (18). By the way, it is formed at the air flow upstream edge at substantially both ends in the longitudinal direction.
• the horizontal blade (18) is formed in a shape in which the width of both ends (18e) is smaller than that of the central portion (18d) by about two-thirds.
• the specific dimensions of the horizontal wing (18) are, for example, about 480 thighs in length, about 37 mm in width (width of the center (I8d)), and about 25 mm in width at both ends (18e).
• the length of the notch (18c) can be reduced to about 120 mm.
• the fan (20) is provided at a substantially central position inside the main body casing (11).
• This fan is a so-called turbo fan in which a blade (23) is held between a shroud (21) and a hub (22).
• the drive shaft (26) of the fan motor (25) attached to the top plate (12) of the main casing (11) is inserted and fixed to the hub (22) of the fan (20).
• a bell mouth (27) is provided below the fan (20) to guide the air flowing into the casing (10) from the air inlet (15) to the fan (20). Have been.
• the heat exchanger (30) is a so-called cross-fin heat exchanger composed of a number of plate-like fins (31) provided in parallel with each other and a heat transfer tube (32) provided through the fins (31). It is an exchanger.
• the heat exchanger (30) is formed in a tubular shape having a rectangular shape in plan view so as to surround the periphery of the fan (20), and is connected to an outdoor unit via a refrigerant pipe (not shown).
• the heat exchanger (30) functions as an evaporator during the cooling operation and as a condenser during the heating operation, and regulates the temperature state of the air sent from the fan (20).
• a drain pan (33) for receiving drain water is provided below the heat exchanger (30).
• the casing (11) of the air conditioner (1) has an air filter (17), a bell mouth (27) and a fan (20) from the air inlet (15) of the decorative panel (14). ) And an air passage (W) leading to the air outlet (16) via the heat exchanger (30).
• the fan (20) When the fan (20) is driven during the air-conditioning operation, the room air taken into the casing (10) from the air inlet (15) through the air filter (17) is supplied to the bell mouth (27), The heat flows through the air flow passage (W) in the order of the fan (20) and the heat exchanger (30), and exchanges heat with the refrigerant in the heat exchanger (30) to control the temperature (for cooling operation, After being cooled (heated in the heating operation), the air is blown out from the air outlet (16) into the indoor space as air-conditioned air, thereby performing air conditioning in the indoor space.
• the horizontal blades (18) are directed substantially vertically downward as shown in FIG.
• the air blows downward along the horizontal blade (18) between the side walls (16a, 16b) on the outer peripheral side of the panel and the inner side walls (16c, 16d) on the inner side of the panel as shown by the arrow S in the same figure.
• the conditioned air that has flowed downward through the air flow passage (W) generally flows along the guide plate (18g) as shown in FIG. Only a small part flows into the enlarged section (16L), and its flow rate is small.
• the small amount of air-conditioning air that has flowed into the enlarged section (16L) passes through the notches (18c) at almost both ends (18e) of the horizontal blade (18), and is almost downward as shown by the arrow S2 in FIG. Is blown out.
• the air blown from both ends of the air outlet (16) has a shape in which both ends (16b-s) of the second outer guide surface (16b) stand up more than the central portion (16b-c) (small inclination).
• the air blown from both ends of the air outlet (16) is discharged from the ceiling plate (70), particularly during the cooling operation in which horizontal blowing of the conditioned air is required. ), It is difficult to flow along the lower surface of the air outlet (16). Therefore, even if the horizontal blades (18) approach the lower surface of the ceiling plate (70) by, for example, about 30 to 35 °, generation of ceiling dirt can be prevented.
• the air flowing downward in the air passage (W) does not hit the horizontal blade (18) and flow outward in the longitudinal direction. rare.
• the air at the end of the air outlet (16) is decelerated and laterally flows out by the outward airflow, and the air at the end of the air outlet (16) is While the negative pressure makes it easy to adhere to the ceiling surface (70), in the present embodiment, the air at the end of the air outlet (16) does not easily adhere to the ceiling surface (70), and dirt is generated. It becomes difficult.
• the air-conditioning air blowing direction can be reduced while preventing the ceiling surface (70) from being stained, particularly during a cooling operation in which horizontal air-conditioning air blowing is required. It is possible to move closer to the horizontal direction than before, thereby ensuring air conditioning efficiency and eliminating the sense of discomfort (draft) for indoor occupants. Further, since the ceiling surface (70) is hardly soiled, the beauty of the ceiling surface (70) is not impaired, and cleaning is not required.
• the notch (18c) of the horizontal blade (18) is formed only in a region of about one quarter of both ends (18d) of the horizontal blade (18). While preventing dirt, it can fully satisfy the horizontal blowout as a whole.
• the present invention is not limited to the above embodiments, but includes other various embodiments.
• the guide plate (1) is provided at substantially both ends of the horizontal blade (18) one by one, but the guide plate (18g) may be plural. If the enlarged portion (16L) is provided only at one end of the air outlet (16), the guide plate (18g) should be provided only at the end where the enlarged portion (16L) is provided. Good.
• the present invention is applied to a so-called four-sided air-conditioning system with a built-in four-sided air-conditioning system (1) that is equipped with a turbofan and blows out conditioned air in four directions, but is not limited to this.
• the present invention can also be applied to a so-called ceiling embedded two-way blow type air conditioner that blows out conditioned air in two directions.
• the present invention can be applied not only to a ceiling-mounted type air conditioner but also to a duct type air conditioner.
• the duct-type air conditioner (50) has an air outlet unit (51) attached to the ceiling panel (70) and is installed on the roof of a building via a ventilation duct (52).
• the air conditioner is connected to the air conditioner body (53) to be operated.
• a guide plate (18g) is provided on the longitudinal end side of the horizontal blade (18) arranged in the air outlet (16).
• the notch (18c) is formed as an opening at almost both ends (18e) of the horizontal blade (18), but the opening (18c) is not necessarily provided.
• a through hole may be provided in the horizontal blade (18) instead of the notch (18c). It is sufficient if air is blown downward from both ends of the airbag.
• shape and dimensions of the horizontal blade (18) and the like and the shape and dimensions of the notch (opening) (18c) are merely examples, and it is naturally possible to appropriately change them according to the shape and the like of the actual product. is there.
• the notch (18c) can be formed, for example, in a shape as shown in FIG. 9A to FIG. 9C, which shows the end of the horizontal blade (18).
• Fig. 9A shows an example in which the airflow upstream edge at almost both ends in the longitudinal direction of the horizontal blade (18) is formed in an arc shape
• Fig. 9B shows the airflow upstream edge formed obliquely in a straight line.
• Example, Figure 9C shows the airflow This is an example in which the flow side edge is formed in an arc shape opposite to that of FIG. 9A.
• the end of the horizontal blade (18) is connected to the airflow upstream edge from the center in the longitudinal direction of the horizontal blade (18) toward both ends as shown in FIG. 9D.
• the shape may be three-dimensionally twisted so that is gradually raised. In this case, since it is difficult for the air to be separated at the end of the horizontal blade (18), there is also an advantage that the surrounding warm air is hard to get into the end of the horizontal blade (18) and dew condensation hardly occurs. .
• the inclination of the second outer guide surface (16b) of the air outlet (16) is set so that both ends (16b-s) are closer to a vertical angle than the central portion (16b-c).

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• 2000
  • 2000-09-06 JP JP2000269692A patent/JP3624813B2/ja not_active Expired - Fee Related
• 2001
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  • 2001-08-30 WO PCT/JP2001/007504 patent/WO2002021051A1/ja active IP Right Grant
  • 2001-08-30 EP EP01961228A patent/EP1326054B1/en not_active Expired - Lifetime
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  • 2001-09-04 CN CNB011326921A patent/CN1209586C/zh not_active Expired - Fee Related
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