JP7345675B2 - Air blower - Google Patents

Description

The present disclosure relates to a blower device provided with an operation section used for controlling operation.

Conventionally, components such as a motor and a fan are provided inside a casing that forms an outer shell, and an air blowing device is used that sucks air through an intake port and blows it out from an exhaust port. Such a blower device can be used as a ventilation device that sucks indoor air through an intake port and exhausts the sucked indoor air to the outdoors through an exhaust port.

Patent Document 1 discloses a ceiling-embedded electric motor having a configuration in which operation is controlled by an electric motor in which a centrifugal blower blade is attached to a rotating shaft, a sensor provided on the front side to detect the indoor environment, and a control unit. A ventilator of the type is disclosed.

Patent No. 3661435

However, in the ventilation device disclosed in Patent Document 1, the circuit box housing the circuit board for controlling the operation of the ventilation device protrudes outward from the front surface of the main body frame where the opening on the indoor side is provided. It is arranged as follows. The circuit box is generally provided with an operating section protruding to the outside for controlling the operation of the ventilation system. For this reason, in the ventilation device disclosed in Patent Document 1, there is a possibility that the operating section may be damaged when the ventilator is placed on the ground with the front side facing down during transportation or construction.

The present disclosure has been made in view of the above, and an object of the present disclosure is to obtain a blower device that can protect an operating section for controlling the operation of a ventilation device during transportation or construction.

In order to solve the above-mentioned problems and achieve the objectives, an air blower according to the present disclosure includes a casing in which an intake port and an exhaust port are formed, and a plurality of flanges provided at the end of the casing on the intake port side. and a blower that is housed in the casing and forms an airflow that flows into the casing from an intake port of the casing and exits from an exhaust port of the casing. In addition, the blower device includes a scroll part in which an opening leading to an intake port and an opening leading to an exhaust port are formed to form an air path of the blower and the blower is accommodated therein, and a scroll part in which an opening leading to an intake port and an opening leading to an exhaust port are formed, and a scroll part having an opening leading to an intake port and an opening leading to an exhaust port. It includes an orifice that closes an opening leading from the intake port side of the casing to the intake port of the scroll component, and a box body that is attached to the surface of the orifice on the intake port side of the casing and houses a control circuit that controls the operation of the blower. In the blower device, the surface of the box body on the side of the intake port of the casing has an uneven shape with unevenness in the height direction of the box body, and the bottom surface of the recess in the uneven shape has an operation part for controlling the operation of the blower. provided. In the blower device, the height of the operation part is equal to or less than the height of the convex part in the uneven shape.

The blower device according to the present disclosure has the effect that the operating section for controlling the operation of the ventilation device can be protected during transportation or construction.

Cross-sectional view of the air blower according to Embodiment 1 A bottom view of the air blower according to the first embodiment with the decorative grill removed. A bottom view showing a state in which parts on the indoor side from the orifice are removed from the air blower according to Embodiment 1. Cross-sectional view along line IV-IV in Figure 2 Cross-sectional view along line V-V in Figure 2 Cross-sectional view along the VI-VI line in Figure 2 A top view of the control component showing details of the protruding part of the air blower according to the first embodiment Cross-sectional view along line VIII-VIII in Figure 7 Cross-sectional view along line IX-IX in Figure 7

Below, a blower device according to an embodiment will be described in detail based on the drawings.

Embodiment 1.
FIG. 1 is a sectional view of the air blower according to the first embodiment. FIG. 2 is a bottom view of the air blower according to the first embodiment with the decorative grille removed. In addition, in FIG. 1, part of the side surface of the motor 3 and fan 4 is also shown. FIG. 3 is a bottom view showing a state in which the parts on the indoor side from the orifice are removed from the air blower according to the first embodiment.

The blower device 100 according to the first embodiment includes a blower 1 which is a ventilation drive body that circulates air to be ventilated, and a cylindrical shape with an open top and bottom, and an exhaust port 2b which serves as an airflow outlet on the side. The casing 2 includes a casing 2, a top surface 28 that closes an opening on the top surface of the casing 2, and a duct connection port 8 installed on a side surface of the casing 2. The air blower 100 is installed in the main body embedding opening 26 provided in the ceiling material 25, and the duct connection port 8 is inserted from the indoor 202 side into the duct 14 installed in the attic 201 and connecting the indoor and outdoor areas. used.

The air blower 100 according to the first embodiment is embedded in the main body embedding opening 26 made in the ceiling material 25 from the indoor 202 side, and is inserted into the ceiling material through the screw hole 27 provided in the flange 2a of the casing 2. It is fixed to the ceiling material 25 by being screwed to 25.

In the casing 2, an exhaust port 2b is formed on the side surface, and an opening on the bottom surface serves as an intake port 2c. A duct connection port 8 is connected to the exhaust port 2b. The duct connection port 8 extends from the side surface of the casing 2 in a direction perpendicular to the side surface of the casing 2 . The duct connection port 8 extends the position at which air is discharged from the casing 2 to a position where it communicates with the duct 14. The duct connection port 8 allows air discharged from the exhaust port 2b to the outside of the casing 2 to be discharged from the discharge port 10.

The duct connection port 8 has a cylindrical shape and a stepped outer shape with different diameters. Since the outer shape of the duct connection port 8 is step-shaped with different diameters, it is possible to connect to the ducts 14 with different diameters, and workability such as taping is improved. A shutter 9 is provided inside the duct connection port 8 and is opened and closed by wind pressure. The shutter 9 opens by wind pressure when the air blower 100 is in operation, and closes the duct connection port 8 by its own weight when the blower 9 is stopped. By providing the shutter 9 inside the duct connection port 8, it is possible to prevent outside air from entering the room when the blower device 100 is stopped.

A duct 14 is connected to the discharge port 10 of the duct connection port 8 . The duct 14 extends, for example, outdoors, and is connected to a hood (not shown) provided on the exterior wall of the building. By connecting the duct 14 communicating with the outdoors to the discharge port 10 of the duct connection port 8, a ventilation air path connecting the indoor room 202 and the outdoors is formed. The blower device 100 is used as a duct ventilation fan that ventilates the air in a house by sucking in air from a room 202 and exhausting the sucked air to the outdoors through the duct connection port 8 and the duct 14.

On the other hand, if the duct 14 communicates with the indoor room 202 at a location different from the installation location of the blower device 100 in the indoor room 202, the blower device 100 transfers the air sucked from the indoor room 202 to the blower device 100 in the indoor room 202. It is used as an internal air circulation device that returns indoor air from a location different from where it is installed.

The casing 2 includes a scroll component 6 that forms an air path of the blower 1, and an orifice 5 in which a suction port 5a is formed and which closes the scroll component 6 from the suction port 2c side except for the suction port 5a. The scroll component 6 has an opening communicating with the intake port 2c of the casing 2 and an opening communicating with the exhaust port 2b of the casing 2 to form an air path for the blower 1, and accommodates the blower 1 therein. The orifice 5 presses and fixes the scroll component 6 from the opening side, and forms an air path together with the scroll component 6.

The orifice 5 includes a suction port 5a, presses and fixes the scroll component 6 from the suction port 2c side toward the top surface 28, and forms an air path together with the scroll component 6. The orifice 5 is fixed to an orifice fixing member 21 attached to the side surface of the casing 2 with a screw 33. Components such as a spring fixing portion 7 and a control component 15 are attached to the surface of the orifice 5 on the side of the intake port 2c by screwing or locking. The orifice 5 may be fixed to the top surface 28 by caulking or welding to the scroll component 6, or may be molded integrally with the scroll component 6 from resin and fixed to the top surface 28.

Furthermore, the casing 2 is provided with a plurality of flanges 2a, which are used for screwing the casing 2 to the ceiling material 25, at the end in the direction from the inside of the casing 2 toward the intake port 2c, which is an opening in the bottom surface of the casing 2. It is being The direction from the inside of the casing 2 toward the intake port 2c, which is an opening on the bottom surface, is a direction parallel to the axial direction of a drive shaft 3a of the motor 3, which will be described later. The flange 2a has a flange surface 2aa, which is a main surface extending in a direction perpendicular to a direction parallel to the axial direction of the drive shaft 3a of the motor 3, and a flange surface 2aa, which is a main surface extending in a direction perpendicular to a direction parallel to the axial direction of the drive shaft 3a of the motor 3, and a flange surface 2aa, which extends from the inside of the casing 2 toward an intake port 2c, which is an opening in the bottom surface of the casing 2. It has a folded part 2ab folded back from the end of the flange surface 2aa in the direction.

The plurality of flanges 2a provided on the casing 2 have the same shape and size. Therefore, the positions of the ends of the four flanges 2a in the direction from the inside of the casing 2 toward the intake port 2c, which is the opening in the bottom surface of the casing 2, are at the same position. That is, in the plurality of flanges 2a, the flange surface 2aa, which is the main surface of the flange 2a, is arranged on a virtual plane perpendicular to the direction from the inside of the casing 2 toward the intake port 2c, which is the opening in the bottom surface of the casing 2. . In this embodiment, the flange surfaces 2aa of the four flanges 2a provided on the casing 2 are arranged on a virtual plane perpendicular to the direction from the inside of the casing 2 toward the intake port 2c, which is an opening in the bottom surface of the casing 2. ing. The positions of the end portions of the folded portions 2ab of the four flanges 2a provided on the casing 2 in the direction from the inside of the casing 2 toward the intake port 2c, which is the opening on the bottom surface of the casing 2, are at the same position. .

The air blower 100 includes a decorative grille 12 that is a decorative part that covers the lower surface of the air blower 100 in order to prevent internal parts such as the orifice 5 from being visible and resulting in poor appearance. The decorative grille 12 includes a spring 13 for attaching to the main body, and is fixed to the orifice 5 by hooking the spring 13 to a spring fixing portion 7 provided in the orifice 5.

The blower 1 includes a motor 3 and a fan 4 coupled to a drive shaft 3a of the motor 3. The fan 4 forms an airflow that flows into the casing 2 from the intake port 2c and flows out from the exhaust port 2b. Motor 3 drives fan 4 . The motor 3 is fixed to the top surface 28. When the top surface 28 is formed integrally with the casing 2, the motor 3 can be directly attached to the top surface 28. A part of the blower 1 is housed in a casing 2.

The wire connecting device 20 and the motor 3 are electrically connected by a motor wire (not shown). As shown in FIG. 2, the wire connecting device 20 is isolated from the air path section by the terminal cover 11, and the intrusion of dust and moisture is suppressed. Electric power supplied through an external power wire (not shown) flows from the motor wire to the motor 3 via the wire connection device 20, thereby converting electrical energy into rotational motion of the drive shaft 3a of the motor 3. The fan 4 rotates as the motor 3 transmits rotational motion to the fan 4, and air flow is formed in the air path formed by the scroll component 6 and the orifice 5.

FIG. 4 is a sectional view taken along line IV-IV in FIG. 2. FIG. 5 is a sectional view taken along line VV in FIG. 2. FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. As shown in FIG. 4 , the blower 100 includes a control component 15 that houses a control board 18 for controlling the operation of the blower 1 and controlling the operation of the blower 100 . The control component 15 is attached to a mounting surface 5b, which is a surface of the orifice 5 facing the indoor 202 side. The mounting surface 5b is a flat surface. The control component 15 includes a box-shaped protective case 16 with one side open and a protective cover 17 that closes the opening of the protective case 16. The control component 15 is attached to the orifice 5 with the protective case 16 facing the orifice 5 and the protective cover 17 facing the intake port 2c of the casing 2. The protective cover 17 can be opened and closed by being attached to and removed from the protective case 16. The protective cover 17 closes the opening of the protective case 16 when closed.

The control component 15 houses a control board 18 and a sensor 29, which will be described later, inside a box made up of a protective case 16 and a protective cover 17. Hereinafter, the box formed by the protective case 16 and the protective cover 17 may be simply referred to as a box.

The control board 18 is electrically connected to the motor 3, the sensor 29, and a power source (not shown), and controls the motor 3 and the sensor 29 to control the operation of the air blower 100. A control circuit 40 for controlling the motor 3 and the sensor 29 to control the operation of the blower device 100 is mounted on one side of the control board 18 in the longitudinal direction. Note that the control circuit 40 is shown in FIG. 7, which will be described later. When the blower device 100 does not include the sensor 29, the control circuit 40 controls the motor 3 to control the operation of the blower 1. Therefore, the control circuit 40 controls at least the operation of the blower 1. In the first embodiment, the bottom surface 16a of the protective case 16, the top surface of the protective cover 17, and the control board 18 are arranged parallel to the mounting surface 5b of the orifice 5. Here, a top surface 17a of another area, which will be described later, and a bottom surface 19a of the recessed portion 19 constitute the top surface of the protective cover 17.

The sensor 29 is a sensor that measures the state of the air in the room 202 by measuring the state of the air sucked into the air blower 100 from the intake port 2c. The sensors 29 are various environmental sensors such as a temperature sensor, a humidity sensor, a miscellaneous gas sensor, and a carbon dioxide concentration sensor.

In the control component 15, the surface of the box body on the side of the intake port 2c of the casing 2 has a concave-convex shape having concaves and convexities in the height direction of the box body. Specifically, in the control component 15, the top surface of the protective cover 17 has a concave-convex shape with concavities and convexities in the height direction of the box body, and a part of the top surface of the protective cover 17 in the longitudinal direction is provided with the protective cover. A recessed portion 19 is provided on the upper surface of 17, which is a recessed portion that is lower in height than other areas. The height direction is the height direction of the box. The height position is a position in the height direction of the box.

That is, the height of the bottom surface 19a of the recessed portion 19 is lower than the height of the top surface of the other area of the protective cover 17 other than the recessed portion 19. In the first embodiment, the recessed portion 19 is provided on the upper surface of the protective cover 17 in a region in the longitudinal direction from near the center to one end side where the sensor 29 is housed.

The other area on the upper surface of the protective cover 17 is the area around the recessed part 19 on the upper surface of the protective cover 17, and is a protrusion 24 that is a convex part in the uneven shape of the upper surface of the protective cover 17. The protrusion 24 protrudes higher than the recess 19 in the height direction when viewed from the recess 19 . A plurality of protrusions 24 are provided on the upper surface of the protective cover 17 so as to surround the recess 19 in a direction parallel to the in-plane direction of the recess 19 .

The control component 15 is provided with an operating section operated by a user in order to control the operation of the blower 1 and the blower device 100 on the bottom surface of the concave portion in the uneven shape. That is, the operating section is provided so as to protrude from the outer surface of the box. Specifically, the control component 15 is provided with an operating section on the bottom surface 19a of the recessed portion 19 for controlling the operation of the blower 1. In the first embodiment, a switch 22 that can change the control mode of the blower 100 and a knob 23 that adjusts the sensitivity of the sensor 29 are provided on the bottom surface 19a of the recessed part 19 as operation parts. There is.

As shown in FIGS. 4 to 6, the height of the upper end 22a of the switch 22 provided on the bottom surface 19a of the recessed portion 19 is lower than the height of the upper surface 24a of the protrusion 24. Similarly, the height of the upper end 23a of the knob 23 provided on the bottom surface 19a of the recessed portion 19 is lower than the height of the upper surface 24a of the protrusion 24.

For example, as shown in FIGS. 4 to 6, the height from the bottom surface 19a of the recess 19 to the top surface 24a of the protrusion 24 is a. The height from the bottom surface 19a of the recessed portion 19 to the upper end portion 23a of the knob portion 23 is defined as b. In this case, in the blower device 100, the relationship “a>b” holds true. That is, the heights of the switch 22 and the knob 23, which are operation parts, are lower than the height of the convex part in the uneven shape. Therefore, the switch 22 and the knob portion 23, which are operating portions, do not protrude outward beyond the convex portion of the uneven shape provided at the end of the casing 2 on the side of the intake port 2c. In addition, from the viewpoint that the operating part does not protrude outward beyond the convex part in the uneven shape, it is sufficient that the height of the operating part is equal to or less than the height of the convex part in the uneven shape, and the relationship "a≧b" holds. .

The height from the mounting surface 5b of the orifice 5 to which the control component 15 is mounted to the flange 2a of the casing 2 is c. The height from the mounting surface 5b of the orifice 5 to the upper surface 24a of the protrusion 24 is d. In this case, in the blower device 100, the relationship “c>d” holds true. The mounting surface 5b is a surface of the orifice 5 on the intake port 2c side. That is, the switch 22 and the knob portion 23, which are operating portions, are located closer to the inside of the casing 2 than the flange 2a provided at the end of the casing 2 on the side of the intake port 2c. Therefore, the switch 22 and the knob 23, which are operation parts, do not protrude outward beyond the flange 2a provided at the end of the casing 2 on the side of the intake port 2c. More specifically, the switch 22 and the knob 23, which are operation parts, do not protrude outward beyond the ends of the folded parts 2ab of the four flanges 2a provided on the casing 2.

By providing the operating portion on the bottom surface 19a of the recessed portion 19 under the above-mentioned conditions, compared to the case where the operating portion is provided on the upper surface 24a of the protruding portion 24, the operating portion does not protrude outward beyond the flange 2a. Since the height of the operating section can be increased and the operating section can be easily operated, the operability of the operating section is improved. That is, by providing the switch 22 on the bottom surface 19a of the recessed portion 19 under the above-mentioned conditions, the operating portion can be made to protrude outward beyond the flange 2a compared to the case where the switch 22 is provided on the top surface 24a of the protruding portion 24. Therefore, the height of the switch 22 can be increased, that is, the size of the switch 22 in the height direction can be increased. As a result, in the blower device 100, the switch 22 can be easily operated, so that the operability of the switch 22 is improved. Further, by providing the knob 23 on the bottom surface 19a of the recessed portion 19 under the above-mentioned conditions, the height of the knob 23 is made higher than when the knob 23 is provided on the top surface 24a of the protrusion 24. In other words, the size of the knob portion 23 in the height direction can be increased. As a result, in the blower device 100, the knob portion 23 can be easily operated, so that the operability of the knob portion 23 is improved.

Furthermore, by providing the operating portion on the bottom surface 19a of the recessed portion 19 under the above-mentioned conditions, in the blower device 100, the operating portion does not protrude outward beyond the flange 2a in the casing 2. As a result, in the blower device 100, the operating section can be protected when the blower device 100 is placed on the ground with the intake port 2c side of the casing 2 facing downward during transportation or construction of the blower device 100. It is possible. Note that if at least the condition "a≧b" is satisfied, the above-mentioned effect of protecting the operating section can be obtained.

Further, since the relationships of "a≧b" and "c≧d" hold, in the blower 100, the control component 15 itself does not protrude outward from the flange 2a of the casing 2, so that the control component 15 including the control circuit 40 It is possible to protect the whole. Therefore, in the blower device 100, even if the surface on which the blower device 100 is placed with the intake port 2c side of the casing 2 facing downward is a hard surface such as a concrete floor, the control component 15 including the operating section It can prevent damage. Moreover, by protecting the control component 15 with the flange 2a, it is possible to prevent problems such as failure of the control circuit 40 due to distortion of the box body and the control board 18 due to external force.

FIG. 7 is a top view of the control component showing details of the protrusion of the air blower according to the first embodiment. FIG. 8 is a cross-sectional view taken along line VIII-VIII in FIG. FIG. 9 is a cross-sectional view taken along line IX-IX in FIG. In the first embodiment, the protrusion 24 includes a first protrusion 241 and a second protrusion 241, which is a first protrusion, located above a region on one end side in the longitudinal direction, which is the side where the sensor 29 is housed in the box body. a second protrusion 242 that is a protrusion; and a third protrusion 243 that is a third protrusion located above the area on the other end side in the longitudinal direction of the box body, which is the side where the control circuit 40 is accommodated; including. The third protrusion 243 on the box accommodates at least a portion of the control circuit 40. The first protrusion 241 , the second protrusion 242 , and the third protrusion 243 are arranged to surround the recessed part 19 . Note that the protruding portion 24 may be provided in a shape that covers the entire circumference of the recessed portion 19.

In addition, in this Embodiment 1, the height of the 1st protrusion part 241, the 2nd protrusion part 242, and the 3rd protrusion part 243 is made into the same height. Therefore, the height of the top surface of the first protrusion 241, the height of the top surface of the second protrusion 242, and the height of the top surface of the third protrusion 243 are the top surface of the area other than the recess 19 in the protective cover 17. It is 17a.

The height of the upper end 22a of the switch 22 provided on the bottom surface 19a of the recessed portion 19 is the height of the upper surface of the first protruding portion 241, the height of the upper surface of the second protruding portion 242, and the height of the upper surface of the third protruding portion 242. The height is lower than the height of the upper surface of the protrusion 243. Similarly, the height of the upper end 23a of the knob 23 provided on the bottom surface 19a of the recessed portion 19 is the height of the upper surface of the first protrusion 241 and the height of the upper surface of the second protrusion 242. and the height of the upper surface of the third protrusion 243 . Therefore, the switch 22 and the knob portion 23, which are operating portions, do not protrude outward beyond the convex portion of the uneven shape provided at the end of the casing 2 on the side of the intake port 2c. This provides the effect of providing the operating section on the bottom surface 19a of the recessed portion 19 as described above.

As shown in FIGS. 7 to 9, the first protrusion 241 and the second protrusion 242 are provided with the sensor 29 in between in the lateral direction of the protective cover 17. The first protrusion 241 and the second protrusion 242 are provided with openings to allow air from the room 202 to enter and exit the box.

The first protrusion 241 is located on the upstream side of the air flow between the inside of the box and the outside of the box. The first protrusion 241 has a first slit 30a which is an inlet opening that communicates between the inside of the box and the outside of the box and serves as an entrance for air sucked into the casing 2 into the inside of the box. is formed. The second protrusion 242 is located on the downstream side of the air flow between the inside of the box and the outside of the box. The second protrusion 242 has a second slit 30b that is an outlet opening that communicates between the inside of the box and the outside of the box and serves as an outlet for air from the inside of the box to the outside of the box. It is formed.

In the protective cover 17, a gap is formed between the first protrusion 241 and the second protrusion 242 and the protective case 16 inside the box. On the other hand, in the protective cover 17, no gap is formed between the protective case 16 and the inside of the box except for the first protrusion 241 and the second protrusion 242.

The sensor 29 housed inside the box is mounted in the area between the first slit 30a and the second slit 30b within the plane of the control board 18. That is, the sensor 29 is mounted inside the box in a region between the first protrusion 241 and the second protrusion 242. Further, the first slit 30a and the second slit 30b are arranged with the sensor 29 in between in a direction parallel to the plane of the control board 18. That is, the sensor 29 is housed in a region corresponding to the first protrusion 241 and the second protrusion 242 inside the box, and measures the state of the air.

As shown by the arrow in FIG. 9, the air that has flowed into the internal space of the box from the first slit 30a passes through the internal space of the protective case 16 and flows out of the box from the second slit 30b. The arrows in FIG. 9 indicate the flow of air between the inside of the box and the outside of the box. Thereby, in the blower device 100, the air in the room 202 sucked into the casing 2 can be efficiently supplied to the sensor 29, and the state of the air in the room 202 can be detected with high accuracy by the sensor 29. ing.

The first slit 30a can be referred to as an entrance opening. The first protrusion 241 can be referred to as an entrance protrusion. Furthermore, the second slit 30b can be referred to as an exit opening. The second protrusion 242 can be referred to as an outlet protrusion.

As described above, in the blower device 100 according to the first embodiment, the recess 19 is provided on the upper surface of the box of the control component 15 in which the control circuit 40 is housed, and the operation section is provided on the bottom surface 19a of the recess 19. A switch 22 and a knob 23 are provided. Further, the height of the operating section is set to be equal to or lower than the height of the upper surface 24a of the protruding section 24. The operating portion is located closer to the inside of the casing 2 than the flange 2a of the casing 2. Therefore, in the blower device 100, the operating section does not protrude outward beyond the flange 2a in the casing 2.

As a result, in the blower device 100, the operating section can be protected when the blower device 100 is placed on the ground with the intake port 2c side of the casing 2 facing downward during transportation or construction of the blower device 100. It is possible. In addition, in the blower device 100, since the control component 15 itself does not protrude outward from the flange 2a of the casing 2, when the blower device 100 is placed on the ground with the intake port 2c side of the casing 2 facing downward, the control circuit It is possible to protect the entire control component 15, including 40.

Therefore, according to the first embodiment, it is possible to improve the operability of the operating section that can adjust the control mode of the blower 1 and the detection sensitivity of the sensor 29, and also to lower the intake port 2c side of the casing 2 during construction. A blower device 100 is obtained in which the operating section can be protected when the blower device 100 is placed on the ground, and the control component 15 as a whole can be protected.

The configuration shown in the above embodiments is an example, and it is possible to combine it with another known technology, and a part of the configuration can be omitted or changed without departing from the gist. It is possible.

1 blower, 2 casing, 2a flange, 2aa flange surface, 2ab folded part, 2b exhaust port, 2c intake port, 3 motor, 3a drive shaft, 4 fan, 5 orifice, 5a suction port, 5b mounting surface, 6 scroll parts, 7 Spring fixing part, 8 Duct connection port, 9 Shutter, 10 Discharge port, 11 Terminal cover, 12 Decorative grill, 13 Spring, 14 Duct, 15 Control parts, 16 Protective case, 16a, 19a Bottom, 17 Protective cover, 17a, 24a top surface, 18 control board, 19 recess, 20 wire connection device, 21 orifice fixing component, 22 switch, 22a, 23a upper end, 23 knob, 24 protrusion, 25 ceiling material, 26 main body embedding opening, 27 screw hole, 28 top surface, 29 sensor, 30a first slit, 30b second slit, 33 screw, 40 control circuit, 100 blower, 201 ceiling, 202 room, 241 first protrusion, 242 second protrusion , 243 Third protrusion.

Claims (4)

a casing in which an intake port and an exhaust port are formed;
a plurality of flanges provided at an end of the casing on the intake port side;
a blower that is housed in the casing and forms an airflow that flows into the casing from the intake port of the casing and flows out from the exhaust port;
a scroll component having an opening communicating with the intake port and an opening communicating with the exhaust port forming an air path for the blower and accommodating the blower therein;
an orifice in which a suction port is formed and which closes an opening leading from the suction port side of the casing to the suction port of the scroll component, excluding the suction port;
a box body that is attached to a surface of the casing in the orifice on the intake port side and houses a control circuit that controls the operation of the blower;
Equipped with
A surface of the box body on the side of the intake port of the casing has an uneven shape having depressions and depressions in the height direction of the box body, and an operation for controlling the operation of the blower is provided on the bottom surface of the recess in the uneven shape. A department has been established,
the height of the operation part is equal to or less than the height of the convex part in the uneven shape;
A blower device featuring: the operating portion does not protrude further outside the casing than the flange;
The blower device according to claim 1, characterized in that: In the uneven shape, a plurality of the convex portions are provided around the concave portion;
The blower device according to claim 2, characterized in that: a first convex portion provided with an inlet opening that serves as an inlet for air sucked into the casing;
a second convex portion provided with an outlet opening through which air flows out from the inside of the box;
a third convex portion that accommodates the control circuit;
a sensor that is housed in a corresponding area between the first convex part and the second convex part inside the box body and measures the state of the air;
has
the first convex portion, the second convex portion, and the third convex portion are arranged to surround the concave portion in which the operating portion is provided;
The blower device according to claim 2, characterized in that:

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