TW202016474A - Bathroom dryer - Google Patents

Abstract

This bathroom dryer comprises: a fan motor in which first drain holes (11g, 11h) are formed in the outer shell; a fan that is driven by the fan motor; a heater that warms air blown by the fan; a body that has a box shape in which an opening is formed on one side and that accommodates the fan motor, the fan, and the heater; a panel that has a filter to remove foreign matter in the air taken in by the fan and that is mounted to the body so as to be able to open and close the opening; and a motor cover (36) that covers the first drain holes (11g, 11h) by being attached to the outer shell with a screw. The motor cover (36) has a drain receiving section to receive drain water discharged from the fan motor through the first drain holes (11g, 11h); second drain holes (36j, 36n) to discharge drain water are formed in the drain receiving section; the first drain holes (11g, 11h) and the second drain holes (36j, 36n) do not overlap in a direction in which the second drain holes (36j, 36n) are viewed from the front.

Description

Bathroom dryer

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

In the bathroom dryer, a fan, a fan motor, and a heater are housed 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 that removes foreign substances in the air drawn 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 path also becomes high humidity, and moisture invades into the fan motor.

When moisture invades into the fan motor, the inner surface of the outer surface of the fan motor is condensed, and the drain water accumulates in the lower part. As shown in Patent Document 1, in order to discharge the discharged water, a drain hole is generally provided on the side of the outer contour of the fan motor to drain the water. Advanced technical literature Patent Literature:

Patent Document 1: Japanese Patent Laid-Open No. 2015-173535

Problems to be solved by invention

In order to clean the filter, the bathroom dryer that can open the panel without tools may splash water directly to its fan motor. Even if a drain hole is provided on the outer contour of the fan motor so that the water inside the fan motor can be drained, it is necessary to prevent water from intruding into the fan motor from the outside through the drain hole. Therefore, as in Patent Document 1, a bathroom dryer using a fan motor provided with a drain hole on the side of the motor outline must have waterproof performance to prevent water from entering the fan motor when the panel is opened. Therefore, it must be a structure that prevents water from entering the fan motor through the drain hole even if water splashes on the outer surface of the fan motor, and can reliably discharge the drain water generated by condensation inside the fan motor from the drain hole.

In view of this, an object of the present invention is to obtain a bathroom dryer that can prevent water from invading the inside of the fan motor from the outside, and at the same time can discharge the discharge water generated inside 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 drain hole formed in its outer contour; a fan driven by the fan motor rotating; a heater to heat the air sent by the fan; a body, which It is a box shape with an opening formed on one side, accommodating the fan motor, fan and heater; the panel has a filter to remove foreign objects in the air sucked into the fan, and is installed in the body in such a way that the opening can be opened and closed; The motor cover is attached to the outer frame by 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 the drain water. The first drain hole and the second drain hole do not overlap in the front view of the second drain hole. The fan motor includes a motor frame and a motor bracket that constitute an outer profile. The motor frame and the motor bracket respectively have flange portions at their end engagement surfaces. A fixing groove that engages with the flange portion of the previous note is formed in the motor cover. Invention effect

The effect of the bathroom dryer of the present invention is to prevent water from intruding into the inside of the fan motor, and at the same time, discharge the water generated inside the fan motor to the outside.

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

Embodiment 1. FIG. 1 is a perspective view showing an installation state of a bathroom dryer in Embodiment 1 of the present invention. The bathroom dryer 1 has a panel 2 that forms a design surface on the inner surface of the bathroom, and a body 20 covered with a box-shaped metal shell. The panel 2 includes a panel substrate 3 and a front panel 4. The panel 2 draws air in three directions from the top and the left and right between the panel substrate 3 and the front panel 4. The front panel 4 can be opened by rotating the panel handle 5 to detach the engaging portion of the front panel 4 and the panel substrate 3. In addition, the illustration of the engaging portion of the front panel 4 and the panel substrate 3 is omitted.

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

2 is a longitudinal cross-sectional view showing the internal structure of the main body of the bathroom dryer according to the first embodiment. The main body 20 includes an outer frame 21 forming an outer frame, a fan 22 for supplying air, a fan motor 11 for driving the fan 22, a main body 7 made of resin for forming an air path generated by the fan 22, and a fan case for sending air体23。 23. The body 7 has a box shape with an opening formed on one side. The surface of the 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 11 d is shown in the figure. In addition, the body portion 20 contains: a heater 24 for heating the air blown by the fan 22, an air outlet 10 for blowing out the heated air, an air lock 25 for switching the operation modes of ventilation, heating and drying, and A motor driven by an air lock 25, and an exhaust opening 21a for exhausting air outward.

The bathroom dryer 1 performs an exhaust operation that exhausts air from the exhaust opening 21a by driving the air lock 25 to switch the air path, and a heating operation that causes heated air to flow from the outlet 10 to the bathroom. Alternatively, a part of the air in the bathroom is discharged from the exhaust opening 21a, and a part of the air is heated to return it to the drying operation in the bathroom.

In addition, the air sucked 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.

3 is a front view of the state in which the panel of the bathroom dryer of the first embodiment has been opened. The panel handle 5 mounted on the panel substrate 3 is turned horizontally to loosen the hook portion 4a provided on the lower part of the front panel 4, thereby making the front panel 4 upwardly centered on the engaging portion of the front panel 4 and the upper panel substrate 3 The front panel 4 can be opened by turning in the direction. The filter 6 is attached to the panel substrate 3. The filter 6 can be removed from the right side 3a of the panel substrate by holding the right handle 6a of the filter even when the front panel 4 is closed, or removed from the panel substrate by the left handle 6b of the filter Remove on the left 3b side. In addition, if the front panel 4 has been opened, the filter 6 can be detached from the front by grasping the filter front handle 6c. As described above, the filter 6 can be detached from plural directions. Therefore, even if there is a wall surface on either of the left and right sides of the body portion 20 of the bathroom dryer 1, the filter 6 can be detached, thereby removing the restriction on installation of the bathroom dryer 1 and improving its maintainability.

Fig. 4 is a front view of the state in which the panel of the bathroom dryer in the first embodiment has been opened and the filter has been removed. The front panel 4 and the filter 6 can be removed without using tools. The opening of the filter 6 after removal is provided with a fan 22 for blowing air as shown in FIG. 2, a fan motor 11 that drives the fan 22, a motor fixing plate 12 that holds the fan motor 11, and an air path that forms the fan 22之fan shell 23. The fan 22 sucks air from the air suction part 8a between the fan case 23 and the protruding part 7a of the body 7 containing the product drive circuit (not shown) and the air suction part 8b between the fan case 23 and the fan motor 11 And blow it.

5 is a perspective view of a state in which the panel, filter, and fan case of the bathroom dryer of Embodiment 1 have been removed. 6 is a perspective view of a state in which a panel, a filter, a fan case, and a fan of the bathroom dryer of Embodiment 1 are removed. The motor fixing plate 12 is attached to the body 7. The fan motor 11 is mounted on the motor fixing plate 12. The fan 22 is attached to 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 axis oriented in the lateral direction. The fan 22 is a double suction blade that sucks air from both the air suction parts 8a and 8b.

The motor frame 11a and the motor bracket 11b are provided with flange portions 11c on the surfaces where they meet. The flange portion 11c has a plurality of convex screw lock portions 11e that form holes through which the screws 15 can pass. 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.

An adhesive is applied to the entire periphery of the flange portion 11c. In addition, the lead-through portion is plugged with a sleeve 34 made of resin. Furthermore, the bearing system on the motor frame 11a side is a sealed type. The bathroom dryer 1 according to the first embodiment prevents these moisture intrusion prevention measures from intruding into the inside of the fan motor 11.

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

In the first recess, an insertion hole 36e is formed at the end of the U groove 36p side. The side wall of the end portion of the first concave portion on the U-groove 36p side is formed as a slope 36a projecting above the insertion hole 36e.

In addition, a second drain hole 36n is provided on the surface 36q on the opposite side to the side adjacent to the U groove 36p of the first recess. In addition, on 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 a concave drainage receiving portion 36m, 36k with a surface 36q as a bottom is formed. The side surfaces 36r, 36t of the motor cover 36 extending in the short side direction (that is, the inner sides 36r side of the side surfaces 36r, 36t at both ends of the long side direction) are curved and recessed with the same curvature as the outer diameter of the fan motor 11.

11 is a perspective view of the fan motor, fixing plate, and fan of the bathroom dryer of the first embodiment. 12 is an exploded perspective view of the fan motor, fixing plate, and 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 crossing 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 the state where the bathroom dryer 1 is installed. The motor cover 36 is fixed to the outer shape of the fan motor 11 in a state where the side surface of the inner surface 36s faces the outer shape 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 shapes are in contact, and the screw lock portion 11e is fitted into the insertion hole 36e. Moreover, the position is aligned so that the shaft 11f of the screw lock portion 11e and the shaft 36b of the motor cover 36 coincide. With the shaft 11f of the screw locking portion 11e and the shaft 36b of the motor cover 36 aligned, the motor frame 11a is passed through the through hole 12c of the motor fixing plate 12 to rotate in the circumferential direction of the fan motor 11 toward the through hole 12c The screw fixing portion 12a protruding in the central direction of the shaft passes through the sliding groove 36c and slides so that the positions of the shaft 11f of the screw locking portion 11e and the shaft 12b of the screw fixing portion 12a coincide. 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 in a state where the motor cover 36 is positioned with respect to the outer contour of the fan motor 11. Then, 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 portion 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 and the U groove 36p of the motor cover 36 that penetrate the insertion hole 36e are locked to the screw fixing portion 12a by the screw 15 together. Since the U groove 36f is formed along the shaft 36b in the motor cover 36, the screwdriver handle 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 IPX4 in the waterproof grade of the International Electrotechnical Commission (IEC). In the bathroom dryer 1, the side 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 or only have a dimensional relationship through a small gap, so even if it is splashed Water does not enter 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 offset from the first drain holes 11g of the motor bracket 11b and the first drain holes 11h of the motor frame 11a. Therefore, when viewed from the front, the second drain hole 36j does not overlap the second drain hole 36j and the first drain hole 11g. Similarly, when viewed from the front, the second drain hole 36n does not overlap the second drain hole 36n and the first drain hole 11h. 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 the water intrudes into the motor cover 36 due to the scattering of water, the water does not intrude into the inside of the fan motor 11. In particular, although water from the outside is easily splashed to the side of the motor bracket 11b, the protrusion 36h formed by the thickness of the screw fixing groove 36d and the U groove 36f blocks the water from the second drain hole 36j of the motor cover 36 A path that linearly splashes onto the first drain hole 11g of the motor bracket 11b.

In the case where discharge water is generated inside the fan motor 11 due to condensation, on the motor bracket 11b side, the discharge water falling from the first drain hole 11g into the drain receiving portion 36k of the motor cover 36 passes through two of the motor covers 36 The second drain hole 36j is discharged. On the side of the motor frame 11a, the water discharged from the first drain hole 11h into the drain receiving portion 36m of the motor cover 36 is discharged through the second drain hole 36n of the motor cover 36. The second drain holes 36j, 36n of the motor cover 36 are of a size that prevents water from accumulating due to surface tension. Specifically, the size of the second drain holes 36j, 36n is such that the surface tension of the water film formed by the drain water in the second drain holes 36j, 36n is weaker than the gravity acting on the water film. If the second drain holes 36j, 36n are of a size satisfying this condition, water will not accumulate in the drain receiving portion 36k, 36m, even if the water film formed by the drain water in the second drain holes 36j, 36n is not affected from above In the 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 according to the first embodiment, the motor cover 36 is fixed to the fan motor 11 with screws 15 to block the first drain holes 11h and 11g. Therefore, even if water splashes from the outside, the water can be prevented from entering the fan motor 11 . In addition, the motor cover 36 is provided with drain receiving portions 36k, 36m that receive the discharged water discharged from the inside of the fan motor 11 on the front surface of the first drain holes 11h, 11g, and second drain holes 36j are provided on the drain receiving portions 36k, 36m 36n, therefore, the discharged 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 the wall installation type or the window installation type, the installation position is lower than that of the installation on the ceiling, so the possibility that water directly splashes on the fan motor becomes high. Therefore, the bathroom dryer installed in the wall or the window must implement measures to prevent water from the outside from entering the fan motor. The bathroom dryer 1 of the first embodiment can prevent water from the outside from entering the fan motor 11 and can therefore be installed at a position lower than the ceiling.

The configuration shown in the above embodiment is an example of the content of the present invention, and it can be combined with other well-known technologies, and a 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: Right side of panel substrate 3b: left side of panel substrate 4: front panel 4a: hook 5: Panel handle 6: filter 6a: Filter right handle 6b: Filter left handle 6c: Filter front handle 7: Ontology 7a: protrusion 8a, 8b: air intake 10: Blow out 11: Fan motor 11a: Motor frame 11b: Motor bracket 11c: Flange 11d: Motor shaft 11e: Screw lock 11f, 12b, 36b: shaft 11g, 11h: the first drain hole 12: Motor fixing plate 12a: Screw fixing part 12c: through hole 13: Nut 15: screw 20: Body 21: outline frame 21a: Exhaust opening 22: Fan 23: Fan housing 24: heater 25: Airlock 34: sleeve 36: Motor cover 36a: Bevel 36c: Sliding groove 36d: screw fixing groove 36e: Insert hole 36f, 36p: U groove 36g: flange groove 36h: protrusion 36j, 36n: 2nd drain hole 36k, 36m: Drainage receiving part 36q: surface 36r, 36t, 36u: side 36s: inside

[Fig. 1] A perspective view showing an installation state of a bathroom dryer according to Embodiment 1 of the present invention [FIG. 2] A longitudinal cross-sectional view showing the internal structure of the main body of the bathroom dryer according to the first embodiment [FIG. 3] The front view of the state which removed the panel of the bathroom dryer of Embodiment 1. [Fig. 4] A front view of the state in which the panel and the filter of the bathroom dryer of Embodiment 1 have been removed [Fig. 5] A perspective view of a state in which a panel, a filter, and a fan case of a bathroom dryer of Embodiment 1 have been removed [Fig. 6] A perspective view of a state in which a panel, a filter, a fan case, and a fan of a bathroom dryer of Embodiment 1 are removed [FIG. 7] The perspective view of the surface side of the motor cover of the bathroom dryer of Embodiment 1 [Fig. 8] A perspective view of the back side of the motor cover of the bathroom dryer of embodiment 1 [FIG. 9] The plan view of the motor cover of the bathroom dryer of Embodiment 1 [Fig. 10] A cross-sectional view of the motor cover of the bathroom dryer in the first embodiment [FIG. 11] A perspective view of the fan motor, fixing plate, and fan of the bathroom dryer of the first embodiment [Fig. 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 drain hole

36: Motor cover

36a: Bevel

36c: Sliding groove

36d: screw fixing groove

36e: Insert hole

36f, 36p: U groove

36g: flange groove

36h: protrusion

36j, 36n: 2nd drain hole

36k, 36m: Drainage receiving part

36q: surface

36r, 36t, 36u: side

36s: inside

Claims (4)

A bathroom dryer is characterized by including: The fan motor is formed with a first drain hole in its outer profile; Fan, which is driven by the fan motor of the previous note; Heater to heat the air from the fan in the previous note; The body, which is a box shape with an opening formed on one side, houses the fan fan motor, fan fan and heater in the front; The panel has a filter to remove foreign substances in the air of the fan of the previous note, and is installed on the main body of the previous note in such a way that the opening of the previous note can be opened and closed; Motor cover, which is installed on the outline of the previous note by screws to cover the first drain hole of the previous note; The previous motor cover has a drain receiving part that receives the drain water discharged from the previous fan motor through the first drain hole of the previous script; The second drain hole of the previous note forms a second drain hole for discharging the previous note; In the direction of the front view of the second drainage hole of the previous note, the first drainage hole of the previous note and the second drainage hole of the previous note do not overlap; The fan motor of the previous note is equipped with a motor frame and a motor bracket that form the outline of the previous note; The front motor frame and the front motor bracket have flanges at the joint surfaces of their ends; A fixing groove that engages with the flange portion of the previous note is formed in the previous note motor cover. The bathroom dryer described in item 1 of the patent application scope includes: A fixing plate, which has a screw fixing part for locking the prescript screw; The preface flange portion has a convex screw locking portion formed with a hole through which the preface screw can penetrate; Former motor cover is formed: an insertion hole through which the screw lock portion of the previous note can pass, a narrow portion with a narrower width than the head of the previous note screw, prevent it from being combined with the previous note screw locking portion and the previous note screw for the previous narrow section that will penetrate the insertion hole of the previous note Lock the U groove that interferes with the tool in the screw fixing part of the previous note. For the bathroom dryer described in item 2 of the patent application scope, the motor cover is formed with a sliding groove, which extends in the direction intersecting the extending direction of the U groove and reaches the end of the motor cover. The screw fixing part of the motor can slide on among them. For the bathroom dryer described in any one of claims 1 to 3, the size of the second drain hole in the first note is such that the surface tension of the water film formed by the second drain hole in the previous note is more effective than the previous note. The gravity of the water film is even weaker.

Images