TWI714981B - Bathroom dryer - Google Patents

Abstract

A bathroom dryer, comprising: a fan motor, forming a first drain hole (11g, 11h) on its outer profile; a fan, which is driven by the rotation of the fan motor; a heater, which heats the air blown by the fan; a body, It is a box shape with an opening formed on one side, accommodating fan motors, fans, and heaters; the panel has a filter to remove foreign matter in the air sucked into the fan, and is installed on the body in a way that the opening can be opened and closed; motor cover (36), which is installed on the outer profile by screws to cover the first drain hole (11g, 11h); the motor cover (36) has a drain receiving portion, which accepts the fan motor through the first drain hole (11g, 11h) The drained water; the drain receiving part forms the second drain hole (36j, 36n) for draining the drained water; the first drain hole (11g, 11h) is viewed from the front of the second drain hole (36j, 36n) It does not overlap with the second drain hole (36j, 36n).

Description

Bathroom dryer

The present invention relates to a bathroom dryer, which has a heating operation that blows warm air to the bathroom, a ventilation operation that discharges bathroom air to the outside, and a drying operation that simultaneously blows warm air to the bathroom and discharges air from the bathroom , And switch the wind path by airlock.

The bathroom dryer contains a fan, a fan motor, and a heater in a box-shaped body with an opening formed on one side. The opening surface of the main body is covered by a panel provided with a filter to remove foreign matter in the air sucked into the fan. When the bathroom dryer is operated in a high humidity state in the bathroom, the environment around the fan motor in the air duct also becomes high humidity, and moisture invades into the fan motor.

When moisture invades into the fan motor, dew is formed on the inner surface of the fan motor's outer profile, and drained water accumulates in the lower part. As shown in Patent Document 1, in order to drain the drain water, a drain hole is generally provided on the side surface of the fan motor to drain water. Advanced technical literature Patent Literature:

Patent Document 1: Japanese Patent Application Publication No. 2015-173535

The problem that the invention solves

In order to clean the filter, you can open the panel of the bathroom dryer without tools. Water may directly splash on the fan motor. Even if a drain hole is provided on the outer profile of the fan motor to allow it to drain the water inside the fan motor, it is still necessary to prevent water from entering the fan motor from the outside through the drain hole. Therefore, as in Patent Document 1, a bathroom dryer using a fan motor with a drain hole provided on the side of the motor outer frame must have waterproof performance to prevent water from entering the fan motor when the panel is opened. Therefore, it must be a structure that does not allow water to enter the fan motor from the drain hole even if water is splashed on the outer frame of the fan motor, and can surely discharge the drain water generated by condensation inside the fan motor from the drain hole.

In view of this, the object of the present invention is to obtain a bathroom dryer that can prevent water from intruding into the fan motor from the outside, and at the same time can discharge the discharged water generated from the fan motor to the outside. Means to solve the problem

In order to solve the above-mentioned problems and achieve the objective, the present invention includes: a fan motor with a first drainage hole formed on its outer profile; a fan, which is driven by the rotation of the fan motor; a heater, which heats the air blown by the fan; a body, which It is a box shape with an opening formed on one side, accommodating the front fan motor, the front fan and the front heater; the panel has a filter to remove foreign matter in the air sucked into the fan, and is installed on the body in a way that the opening can be opened and closed; The motor cover is installed on the outer frame with screws to cover the first drain hole. The motor cover has a drain receiving portion that receives drain water discharged from the fan motor through the first drain hole. The drain receiving portion forms a second drain hole for draining drain water. When viewing the second drain hole from the front, the first drain hole and the second drain hole do not overlap. The fan motor includes a motor frame and a motor bracket that constitute an outer frame. The motor frame and the motor bracket respectively have flanges on their ends. The motor cover is formed with a fixing groove that engages with the front flange portion. Invention effect

The bathroom dryer of the present invention has the effect of preventing water from intruding into the fan motor and at the same time discharging the discharged water generated in the fan motor to the outside.

Hereinafter, the bathroom dryer of the embodiment of the present invention will be described in detail based on the drawings. In addition, the present invention is not limited to this embodiment.

Implementation mode 1. Fig. 1 is a perspective view showing an installation state of a bathroom dryer according to Embodiment 1 of the present invention. The bathroom dryer 1 has a panel 2 that constitutes a design surface on the inner surface of the bathroom, and a main body 20 covered by a box-shaped metal shell. The panel 2 includes a panel substrate 3 and a front panel 4. The panel 2 sucks in air from the upper and the left and right directions between the panel substrate 3 and the front panel 4. The front panel 4 can be opened by turning the panel handle 5 to remove the engaging part of the front panel 4 and the panel substrate 3. In addition, the illustration of the engagement portion of the front panel 4 and the panel substrate 3 is omitted.

The air outlet 10 is formed in the front panel 4 to blow out warm air.

Fig. 2 is a longitudinal sectional view showing the internal structure of the main body of the bathroom dryer of the first embodiment. The main body part 20 includes: an outer frame 21 forming an outer profile, a fan 22 for blowing air, a fan motor 11 for driving the fan 22, a body 7 made of resin that forms an air path for the airflow generated by the fan 22, and a fan case for blowing air体23. The main body 7 has a box shape with an opening formed on one surface. The surface of the main body 7 where the opening is formed is covered by the panel 2. In addition, in FIG. 2, the fan motor 11 is hidden behind the fan 22, and only the motor shaft 11d is shown in the figure. In addition, the main body 20 contains a heater 24 for heating the air blown by the fan 22, a blowout port 10 for blowing out the heated air, an air brake 25 for switching the operation modes of ventilation, heating, and drying, and A motor driven by the air brake 25 and an exhaust opening 21a for expelling air outward.

The bathroom dryer 1 performs an exhaust operation to discharge air from the exhaust opening 21a by driving the air brake 25 to switch the air path, and a heating operation to cause heated air to flow into the bathroom from the air outlet 10, Or, a part of the air in the bathroom is discharged from the exhaust opening 21a, and a part of the air is heated and then returned to the bathroom for drying operation.

In addition, the air sucked from between the panel substrate 3 and the front panel 4 passes through the filter 6 and then flows in the air passage. The filter 6 removes foreign matter in the air sucked by the fan 22.

Fig. 3 is a front view of the bathroom dryer of the first embodiment with the panel opened. Turn the panel handle 5 installed on the panel substrate 3 to the horizontal direction to loosen the hook 4a provided at the lower part of the front panel 4, thereby making the front panel 4 the engaging part of the front panel 4 and the upper panel substrate 3 as the center and upward Turn the direction to open the front panel 4. The filter 6 is mounted on the panel substrate 3. The filter 6, even when the front panel 4 is closed, can be removed from the right side 3a of the panel substrate by holding the filter right handle 6a, or it can be removed from the panel substrate by holding the filter left handle 6b Remove from the left side 3b. In addition, if the front panel 4 has been opened, the filter 6 can be removed from the front by grasping the filter front handle 6c. As described above, the filter 6 can be removed in plural directions. Therefore, even if there are wall surfaces on either side of the main body 20 of the bathroom dryer 1, the filter 6 can be removed, thereby removing the installation restriction of the bathroom dryer 1 and improving its maintainability.

Fig. 4 is a front view of the bathroom dryer in the first embodiment with the panel opened and the filter removed. The front panel 4 and the filter 6 can be removed without using tools. The opening after the filter 6 is removed is provided with a fan 22 for blowing air as shown in FIG. 2, a fan motor 11 for driving the fan 22, a motor fixing plate 12 for holding the fan motor 11, and an air path forming the fan 22 The fan housing 23. The fan 22 sucks in air from the air suction portion 8a between the fan housing 23 and the protruding portion 7a of the main body 7 of the storage product drive circuit (not shown), and the air suction portion 8b between the fan housing 23 and the fan motor 11 And blow it.

Fig. 5 is a perspective view of a state where the panel, filter, and fan housing of the bathroom dryer of the first embodiment have been removed. Fig. 6 is a perspective view of a state where the panel, filter, fan case, and fan of the bathroom dryer of Embodiment 1 have been removed. A motor fixing plate 12 is installed on the body 7. The fan motor 11 is mounted on the motor fixing plate 12. The fan 22 is mounted on the motor shaft 11d of the fan motor 11. The fan 22 is attached to the motor shaft 11d of the fan motor 11 with the rotation shaft facing in the horizontal direction. The fan 22 is a double suction blade which sucks in air from both the air suction parts 8a and 8b.

The motor frame 11a and the motor bracket 11b are provided with a flange portion 11c on their mutual contact surfaces. The flange portion 11c has a plurality of convex screw locking portions 11e forming holes through which the screws 15 can penetrate. The screw lock portion 11e is fixed to the motor fixing plate 12. The fan 22 is fixed to the metal motor shaft 11d by a metal nut 13.

The adhesive is applied to the entire circumference of the flange portion 11c. In addition, the lead insertion part is plugged with a sleeve 34 made of resin. Moreover, the bearing system on the side of the motor frame 11a is of a sealed type. The bathroom dryer 1 of Embodiment 1 prevents moisture from entering the inside of the fan motor 11 by these moisture intrusion prevention measures.

Fig. 7 is a perspective view of the surface side of the motor cover of the bathroom dryer of the first embodiment. Fig. 8 is a perspective view of the back side of the motor cover of the bathroom dryer of the first embodiment. Fig. 9 is a plan view of the motor cover of the bathroom dryer of the first embodiment. Figure 10 is a cross-sectional view of the motor cover of the bathroom dryer of the first embodiment. Fig. 10 shows a cross-section along the line X-X in Fig. 9. The motor cover 36 has a shape having a long side direction and a short side direction. In Embodiment 1, the motor cover 36 has a rectangular parallelepiped shape. A first recess and a second recess are formed on the surface 36q of the motor cover 36. The first recess is a sliding groove 36c extending to the side surface 36u extending in the longitudinal direction. The second recess is composed of a screw fixing groove 36d and a U groove 36f, and it extends to the side surface 36r at one end in the longitudinal direction. The first recess and the second recess are connected by a U groove 36p. The U groove 36p is a narrow part whose width is narrower than the head of the screw 15.

In the first recess, an insertion hole 36e is formed at the end on the U groove 36p side. The side wall at the end of the U groove 36p side of the first recess is a slope 36a projecting over the insertion hole 36e in an eave shape.

In addition, a second drain hole 36n is provided on the surface 36q on the side opposite to the side adjacent to the U groove 36p of the first recess. In addition, in the surface 36q, a second drain hole 36j is provided adjacent to the second recess in the width direction.

The inner surface 36s of the motor cover 36 is open, and concave drainage receiving portions 36m and 36k are formed with the surface 36q as the bottom. The side surfaces 36r, 36t of the motor cover 36 extending in the short-side direction (that is, the side surfaces 36r and the back 36s side of the two ends in the long-side direction) are curved and recessed with the same curvature as the outer diameter of the fan motor 11.

Fig. 11 is a perspective view of a fan motor, a fixing plate and a fan of the bathroom dryer of the first embodiment. Fig. 12 is an exploded perspective view of the fan motor, the fixing plate and the motor cover of the bathroom dryer of the first embodiment. The sliding groove 36c extends to the end of the motor cover 36 in a direction intersecting the extending direction of the U groove 36f, and the screw fixing portion 12a is slidable. The motor cover 36 is installed under the fan motor 11 in a state where the bathroom dryer 1 is installed. The motor cover 36 is fixed to the outer profile of the fan motor 11 in a state where the side of the back 36s faces the outer profile of the fan motor 11. Specifically, the flange portion 11c is inserted into the flange groove 36g, and the screw locking portion 11e protruding from the flange portion 11c is inserted into the insertion hole 36e of the motor cover 36, so that the inclined surface 36a and the screw locking portion 11e The outer shape abuts, and the screw lock portion 11e is fitted into the insertion hole 36e. Furthermore, the positions are aligned so that the shaft 11f of the screw locking portion 11e and the shaft 36b of the motor cover 36 coincide. With the shaft 11f of the screw locking portion 11e aligned with the shaft 36b of the motor cover 36, the motor frame 11a is passed through the through hole 12c of the motor fixing plate 12 and rotated in the circumferential direction of the fan motor 11 to move toward the through hole 12c The screw fixing portion 12a protruding in the center direction of the screw passes through the sliding groove 36c and slides it so that the position of the shaft 11f of the screw locking portion 11e and the shaft 12b of the screw fixing portion 12a are aligned. Since the sliding groove 36c extends to the end of the motor cover 36, the screw fixing portion 12a can be inserted into and removed from the sliding groove 36c when the motor cover 36 is positioned relative to the outer profile of the fan motor 11. The screw 15 is inserted from the screw fixing groove 36d of the motor cover 36 into the U groove 36p which is a narrow part for screw fixing, and the motor cover 36 and the fan motor 11 are locked to the motor fixing plate 12 together. Specifically, the screw locking portion 11e penetrating the insertion hole 36e and the U groove 36p of the motor cover 36 are locked together on the screw fixing portion 12a by the screw 15. Since the U groove 36f is formed on the motor cover 36 along the shaft 36b, the handle of the screwdriver is prevented from interfering with the motor cover 36 when the screw 15 is locked.

The bathroom dryer 1 must have a waterproof performance equivalent to the anti-foam type IPX4 in the International Electrotechnical Commission (IEC) waterproof rating. In the bathroom dryer 1, the side surfaces of the motor cover 36 and the fan motor 11 and the flange portion 11c and the flange groove 36g of the motor cover 36 are in contact with each other or only have a small gap between them. Therefore, even if it is splashed Water does not intrude into the motor cover 36 from between the motor cover 36 and the side surface of the fan motor 11. In addition, the second drain holes 36j and 36n of the motor cover 36 are arranged at positions shifted from the first drain hole 11g of the motor bracket 11b and the first drain hole 11h of the motor frame 11a. Therefore, when viewed in the direction of the second drain hole 36j from the front, the second drain hole 36j and the first drain hole 11g do not overlap. Similarly, when viewed from the direction of the second drain hole 36n from the front, the second drain hole 36n and the first drain hole 11h do not overlap each other. As described above, since the second drain holes 36j, 36n of the motor cover 36 and the first drain hole 11g of the motor bracket 11b and the first drain hole 11h of the motor frame 11a do not overlap, the first drain holes 11h, 11g are covered by the motor. 36 occlusion. Therefore, even if water intrudes into the motor cover 36 due to water scattering, the water does not intrude into the fan motor 11. In particular, although water from the outside is likely to splash on the motor bracket 11b side, the protrusion 36h formed by the thickness of the screw fixing groove 36d and the U groove 36f prevents water from passing through the second drain hole 36j of the motor cover 36 It splashes linearly to the path of the first drain hole 11g of the motor bracket 11b.

When the inside of the fan motor 11 generates drain water due to condensation, on the motor bracket 11b side, the drain water that falls into the drain receiving portion 36k of the motor cover 36 from the first drain hole 11g passes through one of the two motor covers 36 The second drain hole 36j is discharged. On the motor frame 11a side, the drain water that has fallen into the drain receiving portion 36m of the motor cover 36 from the first drain hole 11h is drained through the second drain hole 36n of the motor cover 36. The second drain holes 36j and 36n of the motor cover 36 are of a size that prevents water from being accumulated by surface tension. Specifically, the size of the second drainage holes 36j, 36n is such that the surface tension of the water film formed by the discharged water in the second drainage holes 36j, 36n is weaker than the gravity acting on the water film. If the second drain holes 36j, 36n are of a size that meets this condition, water will not accumulate in the drain receiving parts 36k, 36m, even if the water film formed in the second drain holes 36j, 36n is not removed from above. In a state where the drain water is pushed, the drain water does not accumulate in the second drain holes 36j, 36n.

In the bathroom dryer 1 of Embodiment 1, the motor cover 36 is fixed to the fan motor 11 with screws 15 to block the first drain holes 11h, 11g. Therefore, even if water is poured from the outside, it can prevent water from entering the fan motor 11 . In addition, in the motor cover 36, drain receiving portions 36k, 36m for receiving the drain water discharged from the inside of the fan motor 11 are provided on the front of the first drain holes 11h, 11g, and second drain holes 36j are provided on the drain receiving portions 36k, 36m. , 36n, therefore, the discharge water generated inside the fan motor 11 can be discharged to the outside of the fan motor 11.

In particular, when the bathroom dryer is of a wall-mounted type or a window-mounted type, the installation position is lower than when it is installed on the ceiling, so there is a high possibility that water will directly splash on the fan motor. Therefore, the bathroom dryer installed on the wall or window must take measures to prevent water from outside from entering the fan motor. The bathroom dryer 1 of Embodiment 1 can prevent water from the outside from entering the inside of the fan motor 11, so it can be installed below the ceiling.

The configuration shown in the above embodiment is an example of the content of the present invention, which can be combined with other known technologies, and part of the configuration can be omitted or changed without departing from the gist of the present invention.

1: Bathroom dryer 2: Panel 3: Panel substrate 3a: The right side of the panel substrate 3b: The left side of the panel substrate 4: Front panel 4a: Hook 5: Panel handle 6: filter 6a: Filter right handle 6b: Left handle of filter 6c: front handle of filter 7: body 7a: protrusion 8a, 8b: Air suction part 10: Blow out 11: Fan motor 11a: Motor frame 11b: Motor bracket 11c: flange 11d: Motor shaft 11e: Screw lock part 11f, 12b, 36b: axis 11g, 11h: the first drainage hole 12: Motor fixing plate 12a: Screw fixing part 12c: Through hole 13: Nut 15: Screw 20: Body part 21: Outer frame 21a: Exhaust opening 22: Fan 23: Fan housing 24: heater 25: Airlock 34: sleeve 36: Motor cover 36a: inclined plane 36c: Sliding groove 36d: Screw fixing groove 36e: Insert hole 36f, 36p: U groove 36g: flange groove 36h: protrusion 36j, 36n: 2nd drainage hole 36k, 36m: Drainage receiving part 36q: surface 36r, 36t, 36u: side 36s: inside

[Fig. 1] A perspective view showing the installation state of the bathroom dryer in Embodiment 1 of the present invention [Fig. 2] A longitudinal sectional view showing the internal structure of the main body of the bathroom dryer in Embodiment 1 [Figure 3] The front view of the bathroom dryer in Embodiment 1 with the panel removed [Figure 4] The front view of the bathroom dryer in the first embodiment with the panel and filter removed [Fig. 5] A perspective view of a state where the panel, filter, and fan housing of the bathroom dryer of Embodiment 1 are removed [Figure 6] A perspective view of the bathroom dryer panel, filter, fan case, and fan in the first embodiment [Fig. 7] A perspective view of the surface side of the motor cover of the bathroom dryer of Embodiment 1 [Figure 8] A perspective view of the back side of the motor cover of the bathroom dryer of the first embodiment [Figure 9] A plan view of the motor cover of the bathroom dryer in the first embodiment [Figure 10] Sectional view of the motor cover of the bathroom dryer in the first embodiment [Figure 11] A perspective view of the fan motor, fixing plate, and fan of the bathroom dryer of Embodiment 1 [Figure 12] An exploded perspective view of the fan motor, fixing plate, and motor cover of the bathroom dryer of Embodiment 1

11g, 11h: the first drainage hole

36: Motor cover

36b: shaft

36c: Sliding groove

36d: Screw fixing groove

36e: Insert hole

36f, 36p: U groove

36j, 36n: 2nd drainage hole

36r, 36t, 36u: side

36j, 36n: 2nd drainage hole

36k, 36m: Drainage receiving part

36q: surface

36r, 36t, 36u: side

36s: inside

Claims (4)

A bathroom dryer, which is characterized by comprising: a fan motor, which forms a first drainage hole on its outer profile; a fan, which is driven by the fan motor in the preceding paragraph; a heater, which heats the air blown by the fan; It is a box shape with an opening on one side, which houses the front fan motor, the front fan and the front heater; the panel has a filter to remove foreign matter in the air sucked into the front fan, and is installed in a way that the front opening can be opened and closed. The preface body; the motor cover, which is installed on the outline of the preface by screws to cover the first drainage hole of the preface; the preface motor cover has a drain receiving part, which receives the drain water discharged from the preface fan motor through the first drainage hole of the preface ; The second drainage hole is formed in the drainage receiving part of the previous note; the first drainage hole of the previous note does not overlap with the second drainage hole of the previous note in the direction of the second drainage hole when viewed from the front; Outer profile motor frame and motor bracket; the aforementioned motor frame and the aforementioned motor bracket, respectively, have flanges on their end surfaces; the aforementioned motor cover forms a fixed groove that engages with the aforementioned flanges. As described in the first item of the scope of patent application, the bathroom dryer includes: a fixing plate with a screw fixing part for locking the front screw; a front flange part with a convex shape forming a hole through which the front screw can penetrate Screw locking part; front motor cover formation: the insertion hole through which the front screw locking part can penetrate, the narrow part narrower than the head of the front screw, preventing it and the front screw locking part and the front narrowing that will penetrate the insertion hole Use the front screws to lock the U groove in the interference of the tools of the front screw fixing part. For example, in the bathroom dryer described in item 2 of the scope of patent application, the aforementioned motor cover forms a sliding groove, which extends in the direction intersecting the extension direction of the aforementioned U groove and reaches the end of the aforementioned motor cover, and the aforementioned screw fixing part can slide on among them. For the bathroom dryer described in any one of items 1 to 3 in the scope of the patent application, the size of the second drainage hole mentioned above is configured so that the surface tension of the water film formed by the drainage water in the previous paragraph is more effective Yu Qianji's water film has weaker gravity.

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