JP5263350B2 - Blower - Google Patents

Description

  The present invention includes an intake port for sucking in indoor air, a discharge port for discharging air sucked from the intake port, an intake means for sucking air through the intake port, and an air sucked by the intake means. The present invention relates to a blower device including a damper that leads to an outlet.

  In general buildings, many air blowers are installed to perform air conditioning in the building. In recent years, since it is obliged to install a 24-hour ventilation system in a building having a living room, a bathroom air conditioner or the like is often used as a blower for indoor ventilation.

  Today's bathroom air conditioners often provide not only ventilation in the bathroom, but also a drying function for drying clothes by using both bathroom ventilation and circulation heating.

  In this way, when ventilation and air circulation in the bathroom are used together, the passage of the air sucked into the bathroom air conditioner is divided into two paths by a damper, and one air is heated by a heater and then circulated in the bathroom. And the other air is discharged to the outdoors (see, for example, Patent Document 1).

JP 2004-340407 A (page 4-6, FIG. 1)

  However, when the air sucked by the damper is divided, there is a problem that air turbulence is likely to occur at the tip of the damper, and wind noise may occur.

  In particular, because the damper is structured to move (turn) according to the operation mode of the bathroom air conditioner, there is a risk that noise will be noticeable due to slight differences in the angle of the stopped damper. It was.

  This invention is made | formed in view of the said problem, and makes it a subject to provide the air blower which can aim at reduction of the noise in a damper front-end | tip.

  In order to solve the above-described problems, a blower according to the present invention includes an air intake port that sucks in indoor air, an exhaust port that discharges air sucked from the air intake port, and the air that passes through the air intake port. Inhalation means for inhaling and a damper for guiding the air inhaled by the inhalation means to the discharge port, and a convex curved portion is formed at the end of the damper facing the upstream direction of the inhaled air It is characterized by being.

  Further, the blower device according to the present invention is such that the vertical width of the convex curved portion is wider than the thickness of the damper main body, and at least one of the upper surface and the lower surface following the damper main body from the convex curved portion. May be formed by a continuous surface extending from the convex curved portion to the damper main body.

  Furthermore, a rectifying plate may be formed on the upper surface of the damper to rectify the air guided from the convex curved portion to the discharge port along the upper surface.

  Moreover, the said current plate may be installed in the state which orient | assigned the rear-end part of the said current plate to the said discharge port direction.

  Further, the rectifying plate may have a wing shape in which the horizontal cross-sectional width is continuously narrowed as it proceeds from the front end portion to the rear end portion, and the corner portion of the front end portion is processed into a round shape. .

  According to the blower device of the present invention, since the convex curved portion is formed at the end portion of the damper, the air guided to the end portion of the damper is smoothly divided along the curved surface of the convex curved portion. It is possible to reduce wind noise and the like at the end of the damper.

  In addition, since the vertical width of the convex curved part is wider (thick) than the thickness of the damper main body, the air flowing from the upstream side is convex curved without disturbing the airflow at the tip of the damper It can guide to the upper surface or the lower surface along the bulge of the surface of the part, and it becomes possible to reduce the noise at the end of the damper.

  Furthermore, since at least one of the upper surface or the lower surface that continues from the convex curved portion to the damper main body is formed by a continuous surface that continues from the convex curved portion to the damper main body, the air divided by the convex curved portion is It becomes possible to guide to the damper without causing turbulence of the air flow along the continuous surface on the upper surface or the lower surface of the part. Thus, since the airflow divided | segmented along the continuous surface which continues from a convex curve part to a damper main body is guide | induced smoothly, generation | occurrence | production of the noise in a damper can be reduced.

  Further, since the current plate is formed on the upper surface of the damper, it is possible to suppress the turbulence of the air flowing along the upper surface of the damper from the convex curved portion, and it is possible to reduce noise. Furthermore, since the flow of the airflow can be smoothed by providing the rectifying plate, it is possible to improve the air exhaust efficiency in the blower.

  In particular, the rectifying plate is installed with the rear end facing the discharge port, and the air guided to the upper surface of the damper is guided toward the discharge port while being rectified by the rectifying plate. Occurrence of vortices or the like can be reduced, and noise of air passing through the upper surface of the damper can be reduced.

  In addition, the horizontal flow width of the current plate is continuously reduced as it advances from the front end to the rear end, and the airflow of the current plate is reduced because the front edge has a rounded wing shape. Thus, noise such as wind noise can be further reduced.

It is the perspective view which showed the bathroom air conditioner which concerns on embodiment. It is side sectional drawing which showed the bathroom air conditioner in which a damper is in a fully-closed state. It is the bottom view which showed the main body case in which the fan unit and the damper were installed from the lower surface. It is the perspective view which showed the damper from the diagonally downward direction. It is the perspective view which showed the damper from diagonally upward direction. (A) shows a top view of the damper, and (b) shows a bottom (bottom) view of the damper. It is the block diagram which showed the control structure of the bathroom air conditioner which concerns on embodiment. (A) is the side sectional view showing the bathroom air conditioner in which a damper is in a full open state, and (b) is the side sectional view showing the bathroom air conditioner in which a damper is in a half open state. (A) is the side perspective view which showed the damper which concerns on embodiment, (b), (c) is the side perspective view which showed the damper which concerns on another form.

  Hereinafter, the case where the air blower according to the present invention is used as a bathroom air conditioner will be described.

  FIG. 1 is a perspective view showing a bathroom air conditioner, and FIG. 2 is a side sectional view showing the bathroom air conditioner. The bathroom air conditioner 1 includes a fan unit 2, a main body case 3, a damper 4, a case lower lid 5, a heater 6, and a front panel 7.

  The fan unit 2 includes a fan motor 8 and a sirocco fan 9. The sirocco fan 9 has a plurality of blades 9b disposed on the periphery of a disk-shaped base 9a, and a rotating shaft 8a of the fan motor 8 is fixed to the center of the base 9a. When a driving force is applied to the rotating shaft 8a by driving the fan motor 8, the sirocco fan 9 rotates together with the rotating shaft 8a, and the air in front of the base 9a is moved to the side of the sirocco fan 9 via the blades 9b of the sirocco fan 9. And inhale.

  The main body case 3 is a box having an opening opened downward, and as shown in FIG. 3, a fan storage portion 12 for installing the fan unit 2 and a damper storage portion for storing the damper 4. 13 are formed.

  The fan storage portion 12 is a substantially cylindrical recess whose diameter is larger than the diameter of the sirocco fan 9. The sirocco fan 9 is housed in the fan housing portion 12 with the pivot shaft 8a protruding so that the center 9a of the sirocco fan 9 is fixed to the tip of the pivot shaft 8a.

  Between the side wall surface 12b of the fan housing 12 and the outer peripheral side 9c of the sirocco fan 9, there is a narrow passage 20 for passing the sucked air in the outer peripheral side 9c of the sirocco fan 9, as shown in FIG. It extends about 3/4 rounds counterclockwise along. Further, the narrow passage 20 is communicated with an expansion passage 21 that guides air passing through the narrow passage 20 to the damper storage portion 13.

  The width of the expansion passage 21 is increased as it proceeds from the narrow passage 20 to the damper storage portion 13, and one side wall 21 a of the passage extends from the side wall surface 12 b of the fan storage portion 12 to the damper storage portion 13. The other side wall 21 b is formed by the outer peripheral side 9 d of the sirocco fan 9 and the side wall 22 a of the tongue-like wall portion 22 that forms the boundary between the narrow passage 20 and the damper storage portion 13.

  Three passage rectifying plates 25 a to 25 c are formed in the expansion passage 21, and each of the passage rectification plates 25 a to 25 c is maintained at a substantially uniform interval with respect to the passage width of the expansion passage 21. It is arranged on the upper surface of. Each of the passage rectifying plates 25 a to 25 c is gently curved in order to smoothly guide the air flowing from the narrow passage 20 to the damper storage portion 13, and the rear end of the passage rectifying plates 25 a to 25 c is widened of the passage width of the expansion passage 21. It is spaced so that it gradually spreads according to the

  The damper storage part 13 is a substantially rectangular parallelepiped recess in which the damper 4 can be rotatably stored. A heater 6 is installed below the damper storage part 13 and an outlet (exhaust port) to be described later is provided. ) 15 is formed, and an exhaust port (exhaust port) 16 for exhausting air to the outside is formed on the side wall of the damper storage portion 13.

  The damper 4 has a substantially rectangular shape in a plan view, and has a gently curved shape with a central convex portion in a side view as shown in FIG. A shaft 4 a is formed at the lower end of the damper 4, and both ends of the shaft 4 a are pivotally supported on the side wall of the damper storage portion 13. Further, a rib 4b is formed on the lower surface of the damper 4, and a guide hole 4c for guiding the protruding portion 19 of the cam 18 that is rotated according to the operation mode of the bathroom air conditioner 1 is formed on the rib 4b. ing. When the cam 18 rotates, the stop position of the projection 19 changes according to the rotation angle, and the rotation angle of the damper 4 is adjusted.

  4 (a), 4 (b), FIG. 5 (a), and FIG. 5 (b) at the end of the damper on the side of the expansion passage 21, that is, the end on the upstream side of the airflow flowing to the damper storage portion 13. As shown in FIG. 6B and FIG. 9A, a convex curved portion 30 having a substantially hemispherical shape in a side view in which the tip portion swells in a drop shape is formed. When the damper 4 is rotated to a half-open position, which will be described later, the convex curved portion 30 faces the upstream side of the airflow into which the drop-like bottom portion 30a (see FIG. 9A) flows. It is formed. The vertical width L1 of the convex curved portion 30 is larger than the thickness L2 of the damper 4 body, and the outer surface of the convex curved portion 30 and the upper surface 4d and the lower surface 4e of the damper 4 are connected by a continuous surface. ing.

  On the upper surface 4d of the damper 4, as shown in FIGS. 5 (a), 5 (b) and 6 (a), the upper surface rectification for guiding the air flowing along the upper surface 4d to the exhaust port 16 is provided. A plurality of plates (rectifying plates) 31 are formed. Each upper surface rectifying plate 31 is formed in parallel along the short direction of the damper 4, and each upper surface rectifying plate 31 is disposed with the rear end portion directed toward the exhaust port 16.

  Further, the upper face rectifying plate 31 has a wing shape in which the horizontal cross-sectional width is continuously narrowed as it goes from the front end portion to the rear end portion, and the corner portion of the front end portion is rounded. Further, when the damper 4 is rotated to a position where it closes the exhaust port 16, the front upper surface 31 a, the rear upper surface 31 b and the wall surface of the damper storage portion 13 come into contact with each other and there is a gap between the damper 4 and the exhaust port 16. Therefore, the front upper surface 31a and the rear upper surface 31b of the upper surface rectifying plate 31 are configured by inclined surfaces that decrease in height as they go to the ends. By forming such inclined surfaces on the front upper surface 31a and the rear upper surface 31b, even when the damper 4 is rotated to a position closing the exhaust port 16 as shown in FIG. The upper face rectifying plate 31 can be accommodated between the upper face 4 d of the damper 4 and the side wall of the damper accommodating portion 13 without forming a gap between the opening 16.

  Further, as shown in FIGS. 3, 4 (a), 4 (b), and 6 (b), air flowing along the lower surface 4 e is directed to the blower outlet 15 on the lower surface 4 e of the damper 4. Three lower face rectifying plates 32a to 32c for guiding are formed. The front end portions 33a to 33c of the respective bottom face rectifying plates 32 are directed toward the rear end portions of the passage rectifying plates 25a to 26c formed in the expansion passage 21, and are connected to the damper storage portion 13 by the respective passage rectifying plates 25a to 25c. By rectifying the introduced air so that each bottom face rectifying plate 32 takes over, it is possible to suppress the turbulence of the airflow.

  Further, the rear end portions 34a to 34c of the respective bottom face rectifying plates 32 are directed in the direction of the blowout port 15, and the opening (see FIG. The bottom face rectifying plate 32 is arranged with the rear end portions 34a to 34c facing in a direction in which the opening width L3) shown in FIG.

  Similarly to the upper face rectifying plate 31, the lower face rectifying plate 32 is continuously reduced in horizontal cross-section width from the front end portions 33a to 33c to the rear end portions 34a to 34c, and the corner portions of the front end portions 33a to 33c are reduced. It is formed into a rounded wing shape.

  The case lower lid 5 as a fan cover is installed so as to cover the lower surface of the main body case 3 as shown in FIGS. The case lower lid 5 is formed with a suction hole 5a for guiding air to the center of the sirocco fan 9 and a blowout hole 5b for circulating the air carried to the damper storage part 13 indoors. Yes. The suction hole 5 a is a circular opening formed so as to face the front surface of the base 9 a of the sirocco fan 9, and the blowout hole 5 b is a substantially rectangular opening formed so as to face the damper storage portion 13. By installing the case lower lid 5 on the lower surface of the main body case 3, the lower surfaces of the narrow passage 20 and the expansion passage 21 are constituted by the case lower lid 5.

  A heater 6 is installed in the blowout hole 5 b of the case lower lid 5. As the heater 6, a PTC heater is used, and ON / OFF control of the heater 6 is performed by measuring the temperature of air heated by a temperature sensor such as a thermistor (not shown) provided in the suction hole 5a. .

  A front panel 7 is installed on the lower surface of the main body case 3 on which the case lower lid 5 is installed. In the front panel 7, an inlet (intake port) 38 is formed at a position corresponding to the suction hole 5 a of the case lower lid 5, and an outlet 15 is formed at a position corresponding to the outlet hole 5 b of the case lower lid 5. ing. A filter 39 for preventing the inhalation of dust is detachably attached to the suction port 38. The bathroom air conditioner 1 is fixed to the ceiling surface 40a so that the main body case 3 protrudes in the direction of the ceiling, and is installed in the bathroom with only the front panel 7 exposed on the ceiling surface 40a of the bathroom.

  Next, the case where the bathroom air conditioner 1 comprised in this way operates is demonstrated.

  When operating the bathroom air conditioner 1, the user selects an operation mode by operating an operation panel 40 (see FIG. 7) installed in a bathroom dressing room or the like. Specifically, a heating mode for heating the bathroom, a ventilation mode for ventilating the bathroom, a drying mode for drying the bathroom and clothes, and a cool air mode for introducing cool air into the bathroom are selected. Further, in a building such as a condominium that needs to be ventilated for 24 hours, the operation in the 24-hour ventilation mode is performed when the operation mode of the bathroom air conditioner 1 is not selected.

  When the operation mode is selected by the user, the selected operation mode information is transmitted to the control unit 41 installed in the bathroom air conditioner 1, as shown in FIG. The controller 41 controls the rotation angle of the cam 18 by driving the cam driving motor 42 according to the selected operation mode, and adjusts the rotation position of the damper 4 to full open, half open, or full closed. To do. Further, the control unit 41 drives the fan motor 8 of the fan unit 2 according to the selected operation mode to adjust the rotational speed of the sirocco fan 9 to either strong or weak, and to turn the heater 6 on / off. Take control.

  Note that the state where the rotation position of the damper 4 is fully closed means that the damper 4 is rotated to a position where the exhaust port 16 is closed and flows through the narrow passage 20 and the expansion passage 21 as shown in FIG. This means a state in which air is guided to the air outlet 15 (see the air flow indicated by arrows A to B in FIG. 2), and the fully opened state closes the air outlet 15 as shown in FIG. A state in which the damper 4 is rotated to a position to guide the air flowing through the narrow passage 20 and the wide passage 21 to the exhaust port 16 (see the air flow indicated by the arrows A to C in FIG. 8A). The half-open state means that the damper 4 is shown in FIG. 8B in order to guide the air flowing through the narrow passage 20 and the wide passage 21 to both the blowout port 15 and the exhaust port 16. The state shown in FIG. 8 (b) is indicated by arrows A to B and arrows A to C. It refers to the flow reference).

  Next, the operation of the bathroom air conditioner 1 will be described separately for each operation mode.

<In the heating mode>
When the heating mode is set by the user, as shown in FIG. 2, the control unit 41 turns the damper 4 to the fully closed position, sets the rotation speed of the sirocco fan 9 to be strong, and turns the heater 6 on. Turn it on. When the rotation speed of the sirocco fan 9 is set to be strong, the air in the bathroom is sucked into the main body case 3 from the suction port 38 as the sirocco fan 9 rotates.

  The sucked air passes between the blades 9 b of the sirocco fan 9 and is guided to the narrow passage 20 and guided to the expansion passage 21. In the expansion passage 21, the passage width of the expansion passage 21 is wider than the passage width of the narrow passage 20, so that airflow is likely to be disturbed, but the expansion passage 21 is provided with passage rectifying plates 25a to 25c. It is possible to guide air to the damper storage portion 13 without disturbing the airflow in the expansion passage 21.

  In the damper storage part 13, since the damper 4 is rotated to the fully closed position, as shown in FIG. 2, the upper part of the convex curved part 30 of the damper 4 abuts on the upper surface of the main body case 3, and the damper 4 The exhaust port 16 is blocked by the upper surface 4d. For this reason, the air guided to the damper housing part 13 changes the air flow direction downward along the lower surface 4 e of the damper 4 and flows to the heater 6.

  At this time, the lower face rectifying plates 32 a to 32 c are formed on the lower face 4 e of the damper 4, and the front end portions 33 a to 33 c of the lower face rectifying plates 32 a to 32 c are formed in the narrow passage 20. Since the air is directed toward the lower surface 4e of the damper 4 by the passage rectifying plates 25a to 25c, the air is rectified by the lower surface rectifying plates 32a to 32c and blown without disturbing the airflow. You are guided to the exit 15. As described above, the lower surface rectifying plate 32 formed on the lower surface 4e of the damper 4 can reduce the turbulence of the air flowing from the expansion passage 21 to the damper accommodating portion 13, so that the noise in the damper accommodating portion 13 can be reduced. Generation can be reduced.

  In particular, the lower face rectifying plates 32a to 32c have a horizontal cross-sectional width that is continuously reduced as they proceed from the front end portions 33a to 33c to the rear end portions 34a to 34c, and the corner portions of the front end portions 32a to 32c are processed to be round. Since it has a shape, it is possible to reduce the air resistance of the bottom face rectifying plates 32a to 32c, and to further reduce noise such as wind noise.

  Moreover, each lower surface baffle plate 32a-32c has each rear-end part 34a-34c in the direction in which the opening of the blower outlet 15 is divided | segmented substantially equally by the extending direction (extension line 35) of each rear-end part 34a-34c. Since it is formed on the lower surface 4e of the damper 4 in the state of being directed, the air guided from the expansion passage 21 to the lower surface 4e of the damper 4 is uniformly distributed to the outlet 15 by the lower surface rectifying plate 32. Will be guided. Thus, since the flow rate of the air guided along the lower surface 4e of the damper 4 can be made uniform at the air outlet 15, turbulence of the air current in the vicinity of the air outlet 15 can be reduced, and noise can be generated. It becomes possible to suppress.

  Furthermore, since the flow rate of the air guided toward the blowout port becomes equal, the air can be evenly introduced into the heater 6. For this reason, the temperature unevenness of the warm air heated by the heater 6 can be reduced, and the air volume and temperature of the warm air circulated in the bathroom can be made uniform regardless of the position of the outlet 15. .

  In this way, the air heated by the heater 6 is circulated in the bathroom, and the bathroom is heated.

<Ventilation mode and 24-hour ventilation>
When the ventilation mode is set by the user, the control unit 41 turns the damper 4 to the fully open position and sets the rotation speed of the sirocco fan 9 to be strong as shown in FIG. Set 6 to OFF. When the rotation speed of the sirocco fan 9 is set to be strong, air in the bathroom is sucked into the main body case 3 through the suction port 38 as the sirocco fan 9 rotates.

  The sucked air passes between the blades 9 b of the sirocco fan 9 and is guided to the narrow passage 20 and guided to the expansion passage 21. In the expansion passage 21, the passage width of the expansion passage 21 is wider than the passage width of the narrow passage 20, so that airflow is likely to be disturbed, but the expansion passage 21 is provided with passage rectifying plates 25a to 25c. It is possible to guide air to the damper storage portion 13 without disturbing the airflow in the expansion passage 21.

  In the damper storage part 13, since the damper 4 is rotated to the fully open position, as shown in FIG. 8 (a), the lower part of the convex curved part 30 of the damper 4 abuts against the case lower lid 5, and the damper 4 The air outlet 15 is closed by the lower surface 4e. For this reason, the air guided to the damper storage portion 13 flows into the space of the damper storage portion 13 on the upper surface 4 d side of the damper 4, and is guided to the exhaust port 16 through the damper storage portion 13.

  At this time, since the upper face rectifying plate 31 is formed on the upper face 4d of the damper 4, the air passing along the upper face 4d of the damper 4 is guided toward the exhaust port 16 while being rectified by the upper face rectifying plate 31. . As described above, since the air flow toward the exhaust port 16 can be rectified by the upper surface rectifying plate 31, it is possible to reduce noise of the air passing through the damper storage portion 13.

  In particular, since the upper surface rectifying plate 31 is installed with the rear end portion directed toward the exhaust port 16, the air guided to the upper surface 4 d of the damper 4 is guided to the exhaust port 16 while being rectified by the upper surface rectifying plate 31. In addition, it is possible to reduce the occurrence of air vortex or the like in the damper storage portion 13, and it is possible to further reduce the noise of the air passing through the upper surface 4 d of the damper 4.

  Moreover, since the flow of the airflow can be made smooth by providing the upper surface rectifying plate 31, it becomes possible to improve the exhaust efficiency of the air in the bathroom air conditioner 1.

  The air rectified by the upper face rectifying plate 31 is guided to the exhaust port 16 as described above and discharged outside the bathroom, thereby ventilating the bathroom.

  In addition, when performing ventilation for 24 hours, while the control part 41 rotates the damper 4 to a full open position, the rotational speed of the sirocco fan 9 is set to weak, and the heater 6 is turned off. In the 24-hour ventilation mode, there is a difference that the wind speed of the air introduced into the main body case 3 becomes weak, but air is sucked and discharged through the same route as the ventilation mode described above.

  For this reason, even if it is a case where it ventilates for 24 hours, it becomes possible by using the bathroom air conditioner 1 which concerns on embodiment to suppress the noise which generate | occur | produces by the disturbance of air. In particular, when performing 24-hour ventilation, the fan unit 2 operates even in the middle of the night. By using the bathroom air conditioner 1, indoor ventilation can be performed without making the user aware of the operation of the bathroom air conditioner 1. Can be done.

<Dry mode and cool breeze mode>
Next, a case where the drying mode and the cool air mode are selected will be described. Here, the drying mode is an operation mode in which a laundry pipe (not shown) is installed in the bathroom and the clothes hung on the laundry pipe are dried, and the cool air mode is a room temperature air blown into the bathroom. This is an operation mode in which a bather can use the bathroom air conditioner 1 like a fan in summer or the like.

  When the user sets the drying mode, as shown in FIG. 8B, the control unit 41 rotates the damper 4 to the half-open position and sets the rotation speed of the sirocco fan 9 to be strong. Set 6 to ON. When the rotation speed of the sirocco fan 9 is set to be strong, air in the bathroom is sucked into the main body case 3 through the suction port 38 as the sirocco fan 9 rotates.

  The sucked air passes between the blades 9 b of the sirocco fan 9 and is guided to the narrow passage 20 and guided to the expansion passage 21. Since the air guided to the expansion passage 21 is rectified by the passage rectifying plates 25a to 25d as in the heating mode, the ventilation mode, and the 24-hour ventilation mode described above, the air is supplied to the damper storage unit without causing turbulence of the airflow. 13 can be guided.

  In the damper storage part 13, since the damper 4 is rotated to the half-open position, the air guided to the damper storage part 13 is divided vertically by the convex curved part 30 formed at the tip of the damper 4. At this time, the convex curved portion 30 swells in a drop shape to form a hemispherical cross section in a side view, and the vertical width L1 of the convex curved portion 30 is thicker than the thickness L2 of the damper 4 body. Therefore, the air flowing into the damper storage portion 13 is divided and guided to the upper surface or the lower surface along the bulge of the surface of the convex curved portion 30 at the tip portion of the damper 4. As described above, the air is separated into the upper and lower sides along the bulge of the convex curved portion 30 without causing separation or vortex, so that noise at the tip portion of the damper 4 can be reduced.

  Furthermore, since the convex curved portion 30 is connected to the upper surface 4d and the lower surface 4e of the damper 4 body by a continuous surface, a part of the air divided by the convex curved portion 30 is convex without causing turbulence of the airflow. The lower surface rectifying plate 32a of the damper is guided along the lower surface 4e of the convex curved portion 30 without causing turbulence of the airflow, and the remaining air is guided along the upper surface of the curved curved portion 30 to the upper surface rectifying plate 31 of the damper 4. To 32c.

  The air guided to the upper surface rectifying plate 31 of the damper 4 is guided in the direction of the exhaust port 16 while being rectified by the upper surface rectifying plate 31, as already described in the case of the ventilation mode and the 24-hour ventilation. Noise of air passing along the upper surface 4d can be reduced.

  In particular, since the upper surface rectifying plate 31 is installed with the rear end portion directed toward the exhaust port 16, the air guided to the upper surface 4 d of the damper 4 is guided to the exhaust port 16 while being rectified by the upper surface rectifying plate 31. In addition, it is possible to reduce the occurrence of air vortex or the like in the damper storage portion 13, and it is possible to further reduce the noise of the air passing through the upper surface 4 d of the damper 4.

  Further, as already described in the case of the heating mode, the air guided to the lower surface rectifying plates 32a to 32c of the damper 4 is guided to the outlet 15 while being rectified by the lower surface rectifying plates 32a to 32c. The noise of the air passing along the lower surface 4e can be reduced.

  Moreover, each lower surface baffle plate 32a-32c orient | assigns the rear-end parts 34a-34c to the direction in which the opening of the blower outlet 15 is divided | segmented substantially equally by the extending direction (extension line 35) of each rear-end part 34a-34c. Since it is formed in this way, the flow rate of the air guided downward along the lower surface 4e of the damper 4 becomes uniform in the vicinity of the blowout port 15, and air flow turbulence and noise in the vicinity of the blowout port 15 are suppressed. Is possible.

  Furthermore, since the flow rate of the air guided downward is uniform, the temperature variation of the warm air heated through the heater 6 can be reduced, and the air volume of the warm air circulated in the bathroom can be reduced, It becomes possible to make it uniform irrespective of the position of the blower outlet 15.

  Further, the upper face rectifying plate 31 and the lower face rectifying plates 32a to 32c have wing shapes in which the horizontal cross-sectional width is continuously narrowed from the front end portion toward the rear end portion, and the corner portions of the front end portion are processed to be round. Therefore, the air resistance of the upper surface rectifying plate 31 and the lower surface rectifying plates 32a to 32c can be reduced, and noise such as wind noise can be further reduced.

  When the cool breeze mode is selected, the same operation as in the drying mode is performed except that the heater 6 is turned off.

  As described above, in the bathroom air conditioner 1, the convex curved portion 30 having a hemispherical shape in a side view that swells in a drop shape is formed at the tip of the damper 4. The air is smoothly divided along the curved surface of the convex curved portion 30, and wind noise and the like at the tip of the damper 4 can be reduced.

  Further, since the vertical width L1 of the convex curved portion 30 is thicker than the thickness L2 of the damper 4 main body, the convex curved curve can be obtained without disturbing the airflow at the tip end portion of the damper 4 from the upstream side. It can be guided to the upper surface or the lower surface along the bulge of the surface of the portion 30, and the noise at the tip of the damper 4 can be reduced.

  Further, since the convex curved portion 30 is connected to the upper surface 4d and the lower surface 4e of the damper 4 main body by the continuous surface, a part of the air divided by the convex curved portion 30 is convex without causing turbulence of the airflow. Along the upper surface of the curved curved portion 30 is guided to the upper surface rectifying plate 31 of the damper 4, and the remaining air also flows along the lower surface of the convex curved portion 30 without causing turbulence of the air flow. 32c. Thus, since the airflow divided | segmented at the front-end | tip of the damper 4 is smoothly guide | induced to the upper surface rectifying plate 31 or the lower surface rectifying plates 32a-32c, generation | occurrence | production of the noise in the front part of a damper can be reduced.

  Moreover, since the upper surface baffle plate 31 is formed on the upper surface of the damper 4, the turbulence of the air flowing along the upper surface 4d of the damper 4 from the convex curved portion 30 can be suppressed, and noise can be reduced. It becomes possible.

  Furthermore, since the flow of the airflow can be made smooth by providing the upper face rectifying plate 31, the air exhaust efficiency in the bathroom air conditioner 1 can be improved.

  In particular, the upper surface rectifying plate 31 is installed with the rear end portion directed toward the exhaust port 16, and the air guided to the upper surface 4 d of the damper 4 is guided toward the exhaust port 16 while being rectified by the upper surface rectifying plate 31. In addition, it is possible to reduce the occurrence of air vortices and the like in the damper accommodating portion 13, and it is possible to reduce the noise of air passing through the upper surface 4 d of the damper 4.

  Further, since the lower face rectifying plates 32a to 32c are formed on the lower face 4e of the damper 4, it is possible to guide the air guided to the damper accommodating portion 13 downward without causing the turbulence of the airflow. It becomes.

  In particular, since the front end portions 33a to 33c of the lower surface rectifying plates 32a to 32c are directed toward the rear end portions of the respective passage rectifying plates 25a to 25c formed in the narrow passage 20, the passage rectifying plates 25a to 25c The guided air can be guided to the air outlet 15 without disturbing the airflow by the bottom face rectifying plates 32a to 32c. As described above, by providing the lower face rectifying plates 32a to 32c, the air flowing from the expansion passage 21 to the damper accommodating portion 13 can be smoothly rectified in the damper accommodating portion 13, so Generation of noise can be reduced.

  In addition, each of the bottom face rectifying plates 32a to 32c has the rear end portions 34a to 34c directed in a direction in which the opening of the outlet 15 is divided approximately evenly by the extending direction (extension line 35) of each rear end portion 34a to 34c. Therefore, the air guided from the expansion passage 21 to the lower surface 4e of the damper 4 is guided so as to be evenly distributed to the outlet 15 by the lower surface rectifying plates 32a to 32c. . Since the flow rate of the air guided downward along the lower surface 4e of the damper 4 can be made uniform, the turbulence of the airflow in the vicinity of the air outlet 15 can be reduced, and the generation of noise can be suppressed.

  Furthermore, since the flow rate of the air guided downward is uniform, the temperature variation of the warm air heated through the heater 6 can be reduced, and the air volume of the warm air circulated in the bathroom can be reduced, It becomes possible to make it uniform irrespective of the position of the blower outlet 15.

  Further, the upper face rectifying plate 31 and the lower face rectifying plates 32a to 32c have a blade shape in which the horizontal cross-sectional width is continuously narrowed from the front end portion to the rear end portion, and the corner portions of the front end portion are processed to be round. Therefore, the air resistance of the upper surface rectifying plate 31 and the lower surface rectifying plates 32a to 32c can be reduced, and noise such as wind noise can be further reduced.

  As described above, the embodiment in which the air blower according to the present invention is used for the bathroom air conditioner 1 has been described for each operation mode. However, the air conditioner according to the present invention is not limited to the above-described embodiment. Absent. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. Understood.

  For example, the convex curved portion 30 formed at the tip of the damper 4 is not limited to the shape described in the embodiment. For example, as shown in FIG. 9 (a), it may be a convex curved portion 41a that has a shape of a fishing hook with a rounded tip, and as shown in FIG. 9 (b), it is cylindrical in a side view. The convex curved part 42a which provided the cylindrical member which has a cross section in the front-end | tip part of a damper may be sufficient. Even in the convex curved portions 41a and 42a configured as described above, the inflowing air can be smoothly divided into upper and lower portions by the curved surface of the tip portion, so that noise at the tip portion of the damper can be reduced. Is possible.

  Moreover, in the said embodiment, as shown in FIG.5, FIG.6, the eight upper surface current plate 31 is installed in the upper surface 4d of the damper 4, and lower surface current plate 32a-32c is shown in FIG.3, FIG.4, FIG.6. Although three are installed on the lower surface 4e of the damper 4, the number of the upper surface rectifying plate 31 and the lower surface rectifying plate 32 is not limited to these, and any number is provided as long as air can be rectified. May be.

  Furthermore, although the said embodiment demonstrated the bathroom air conditioner which ventilates (circulates) and exhausts air using the one fan unit 2, both the fan unit for ventilation and the fan unit for exhaust are used. Even if it is provided, the same effect can be obtained by applying the configuration of the blower according to the present invention.

  Moreover, although the air conditioner for bathroom was demonstrated in embodiment mentioned above, the air blower which concerns on this invention is not limited to the air conditioner for bathrooms, Even if it is an air conditioner used other than a bathroom Good.

DESCRIPTION OF SYMBOLS 1 ... Bathroom air conditioner 2 ... Fan unit 3 ... Body case 4 ... Damper 4a ... (Damper) shaft 4b ... Rib 4c ... Guide hole 4d ... (Damper) upper surface 4e ... (Damper) lower surface 5 ... Case lower cover 6 ... heater 7 ... front panel 8 ... fan motor 8a ... rotating shaft 9 ... sirocco fan 9a ... base 9b ... blades 9c and 9d ... outer peripheral side 12 (of sirocco fan) ... fan storage part 12b ... side wall surface (of fan storage part) 13 ... damper storage part 15 ... outlet (discharge port)
16 ... Exhaust port (exhaust port)
18 ... Cam 19 ... Projection 20 ... Narrow passage 21 ... Wide passage 21a ... Side wall 21b (of wide passage) ... Side wall 22 (of wide passage) ... Tongue wall portion 22a ... (Tongue wall portion) Side walls 25a to 25c ... Passage rectifying plates 30, 41, 42 ... Convex curved portion 31 ... Top rectifying plate (rectifying plate)
31a ... front upper surface 31b (of the upper surface current plate) ... rear upper surfaces 32a to 32c (of the upper surface current plate) ... lower surface current plates 33a to 33c ... (the lower surface current plate) front end portions 34a to 34c ... (of the lower surface current plate) Rear end 35 ... Extension line 38 (of bottom face baffle) ... Suction port (suction port)
39 ... Filter 40a ... Ceiling surface

Claims (3)

An intake port for sucking the air in the bath room,
And exhaust port for discharging the air sucked from the intake port to the bathroom outside,
A blowout port that blows out air sucked from the intake port into the bathroom;
Inhalation means for inhaling the air through the intake port;
A damper for guiding the air sucked by the suction guide means to said exhaust port or said outlet,
A control unit for controlling the drive of the damper ,
The damper is a bathroom air conditioner that is controlled so that air sucked from the air inlet can be simultaneously blown to the air outlet and the air outlet,
At the end of the damper facing the upstream direction of the sucked the air, convex curvature vertical width is wider than the thickness of the damper body is formed,
On the upper surface of the damper, a rectifying plate that rectifies the air guided from the convex curved portion to the exhaust port is formed,
The convex curved portion at least from at the same time the upper forms a semicircular cross-section, prior Symbol least one of upper or lower surface following the damper body from the convex curved portion said convex curvature in a side view Formed by a continuous surface leading to the damper body,
The bathroom air conditioner is characterized in that the rectifying plate is formed so as to be continuous from the convex curved portion and is directed toward the exhaust port . The lower surface of the damper is formed with a second rectifying plate that rectifies the air guided from the convex curved portion to the outlet .
The second rectifying plate is formed in the damper in a state in which the rear end portion is directed in a direction in which the opening of the outlet is substantially equally divided by the extending direction of the rear end portion. The bathroom air conditioner according to claim 1. The rectifying plate has a horizontal cross-sectional width that is continuously reduced as it proceeds from the front end to the rear end,
The bathroom air conditioner according to claim 1 or 2, wherein a corner portion of the front end portion has a wing shape processed into a round shape .

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