KR20240117369A - Bathroom ventilator with hot-air drying function - Google Patents

Abstract

The present invention relates to a bathroom ventilation device with a hot air drying function.
The bathroom ventilation device with a hot air drying function according to an embodiment of the present invention is capable of hot air drying that minimizes the influence of high humidity air inside the bathroom even if the hot air drying function and the exhaust function of air inside the bathroom are performed simultaneously.

Description

Bathroom ventilation device with hot air drying function {BATHROOM VENTILATOR WITH HOT-AIR DRYING FUNCTION}

The present invention relates to a bathroom ventilation device, and more specifically, to a bathroom ventilation device with a hot air drying function.

In general, a bathroom creates a high humidity environment due to evaporating water. In particular, hot water, which is widely used in the winter, generates a large amount of water vapor, and the high humidity environment created in a closed space called a bathroom can cause discomfort to bathroom users and can also cause mold and odor.

Therefore, it is common to install a ventilation device in a bathroom to ventilate the air inside the bathroom to the outside. Typically, the exhaust fan is installed to automatically operate when the bathroom light is turned on.

Typically, a bathroom is a space where showers or baths take place, and as described above, there is a problem in which users cannot quickly remove moisture remaining on their bodies due to the high humidity environment.

Accordingly, in recent years, the demand for hot air drying devices installed inside the bathroom is increasing. For example, the bathroom drying booth disclosed in Korean Patent No. 10-1923031 is a bathroom that installs a separate space for hot air drying inside the bathroom. The technology has been disclosed.

However, given that the size of the bathroom is limited, it is not realistic to provide a separate space for hot air drying inside the bathroom.

To solve this problem, Korea Public Utility Model Publication No. 20-2020-0001258 discloses a bathroom ventilation fan with a body drying function.

The bathroom ventilation fan disclosed in the Korean Public Utility Model Publication sucks in the indoor air of the bathroom, collects moisture from the sucked indoor air, then discharges it separately, separates the moisture from the indoor air of the bathroom, and then uses a body dryer. To provide functionality, dried air is supplied into the bathroom.

The technology disclosed in the Korea Public Utility Model Publication has the disadvantage of using high humidity air inside the bathroom to dry the body, and requires a separate structure for moisture separation.

In addition, in the case of the Korean Utility Model Publication, there is a problem in that the exhaust operation mode for discharging the air inside the bathroom to the outside and the body dryer operation mode for drying the body are performed separately.

In general, the interior of the bathroom after the user takes a shower maintains an environment of high humidity, but the structure disclosed in the Korean Utility Model Publication has the disadvantage of having to operate in the exhaust operation mode and then perform the body dryer operation mode. This has a contradictory structure in that the hot air drying function aims to quickly remove moisture after showering.

If the body dryer operating mode is executed immediately after showering using the above Korean Utility Model Publication, hot air is provided in a high humidity environment inside the bathroom, which may result in blowing high humidity hot air to the user, which is not desirable. don't do it

In addition, there is a problem in that air with high moisture flows into the structure for moisture separation, thereby accelerating the replacement cycle of the moisture separation structure.

The present invention relates to a bathroom ventilation device having a hot air drying function. The purpose of the present invention is to provide a bathroom ventilation device that can simultaneously perform an exhaust function of air inside the bathroom and a hot air drying function.

Another object of the present invention is to provide a bathroom ventilation device that can perform a hot air drying function and an exhaust function without installing a separate moisture removal structure.

Another object of the present invention is to provide a bathroom ventilation device capable of operating in various modes including a hot air drying function and an exhaust function.

The bathroom ventilation device with a hot air drying function according to an embodiment of the present invention is capable of hot air drying that minimizes the influence of high humidity air inside the bathroom even if the hot air drying function and the exhaust function of air inside the bathroom are performed simultaneously.

A bathroom ventilation device according to an embodiment of the present invention may be configured to include a housing and a partition wall. The housing may be embedded in the ceiling of the bathroom such that the bottom plate is exposed toward the bathroom. Additionally, a flow space may be formed inside the housing. Additionally, the partition wall can divide the flow space into an exhaust space and a hot air space.

A bathroom ventilation device according to an embodiment of the present invention may be configured to include at least two exhaust ports, a hot air vent, and an intake port.

In one embodiment, two or more exhaust ports may be formed in the lower plate so that the exhaust space communicates with the bathroom. Additionally, the hot air vent and suction port may be formed in the lower plate so that the hot air space communicates with the bathroom.

A bathroom ventilation device according to an embodiment of the present invention may be configured to include at least two exhaust opening/closing modules and an exhaust fan. The exhaust opening and closing module is installed in the housing and can open and close each exhaust port. Additionally, the exhaust fan is in communication with the exhaust space and can exhaust the air in the bathroom through the exhaust port.

A bathroom ventilation device according to an embodiment of the present invention may be configured to include a hot air module and a suction opening/closing module. In one embodiment, the hot air module is installed in the housing and can blow hot air into the bathroom through the hot air vent.

In one embodiment, the intake opening and closing module may be installed in the housing to open and close the intake port. Here, the suction opening/closing module may open the suction port so that air from the bathroom is sucked into the hot air space when the hot air module operates.

In one embodiment, a heating port, an intake port, and at least two exhaust ports are sequentially formed in a row in one direction on the lower plate.

In one embodiment, when the hot air module operates, the exhaust fan may operate with at least one of the exhaust opening/closing modules opening the exhaust port.

In an embodiment of the present invention, it is assumed that a pair of exhaust ports are formed in the lower plate. Also, for example, the exhaust opening/closing module and the exhaust fan are installed in pairs, and one exhaust opening/closing module and one exhaust fan operate in synchronization with each other.

In one embodiment, when the hot air module operates, a pair of exhaust fans may be operated with each exhaust port opened by each exhaust opening/closing module.

In one embodiment, the bathroom ventilation device according to the embodiment of the present invention is a pair of hot air vents and suction ports closed by a hot air module and a suction opening and closing module, and each exhaust port open by each exhaust opening and closing module. It can be operated in quick exhaust mode where the exhaust fan operates.

In one embodiment, the bathroom ventilation device according to the embodiment of the present invention has the hot air vent and the intake port closed by the hot air module and the suction opening and closing module, and one of the pair of exhaust ports is opened by the corresponding exhaust opening and closing module. , it can operate in a low-noise exhaust mode in which one of a pair of exhaust fans operates.

In an embodiment of the present invention, it is assumed that a partition wall is installed in the housing to enable mutual opening and partition between the exhaust space and the hot air space.

In one embodiment, the bathroom ventilation device has one of a first operating mode in which the partition wall operates with the exhaust space and the hot air space open, and a second operating mode in which the partition wall operates in a state in which the exhaust space and the hot air space are partitioned. It can operate as either one.

Here, the first operating mode may include an exhaust mode in which the exhaust fan operates with the intake port opened by the intake opening and closing module and the exhaust port opened by the exhaust opening and closing module.

In one embodiment, the second operating mode may include any one of a hot air mode, a quick exhaust mode, and a low noise exhaust mode.

In the bathroom ventilation device according to an embodiment of the present invention, in the hot air mode, the hot air module and the exhaust fan can be operated with the intake port opened by the intake opening and closing module and at least one exhaust port opened by the corresponding exhaust opening and closing module. there is.

In the bathroom ventilation device according to an embodiment of the present invention, the exhaust fan may be operated in a quick exhaust mode with the intake port closed by the intake opening/closing module and at least two or more exhaust ports opened by the corresponding exhaust opening/closing module.

In the bathroom ventilation device according to an embodiment of the present invention, in a low-noise exhaust mode, the exhaust fan can be operated with the intake portion closed by the intake opening and closing module and some of at least two or more exhaust ports opened by the corresponding exhaust opening and closing module. there is.

In one embodiment, the hot air module may close the hot air vent when not operating.

The exhaust opening/closing module according to an embodiment of the present invention may be configured to include an exhaust head and an exhaust lifting module.

The cutting head according to an embodiment of the present invention may protrude toward the lower side of the bottom plate to open the exhaust port, and may rise toward the bottom plate to close the exhaust port. Here, the exhaust lifting module can move the exhaust head up and down.

In one embodiment, the exhaust lifting module may include an outer frame, an inner frame, an exhaust lifting motor, a pair of vertical guide balls, a pair of spiral guide balls, and a pair of guide holders.

In one embodiment, the outer frame may be installed on a floor plate within the flow space and may have a cylindrical shape open downward.

In one embodiment, the inner frame may be arranged to be rotatable about an axis in the vertical direction while being accommodated inside the outer frame. Additionally, the inner frame may have a cylindrical shape in which the exhaust head is disposed to move up and down, and is open downward so that the lower portion of the exhaust head is discharged toward the exhaust port.

In one embodiment, the exhaust lifting motor is supported by the outer frame and may rotate the inner frame.

In one embodiment, a pair of vertical guide balls may be formed through a side plate of either the inner frame or the outer case along the vertical direction.

In one embodiment, the pair of spiral guide balls may be formed through the side plate of the other of the inner frame and the outer case and may be formed in a spiral shape along the circumferential direction.

In one embodiment, one side of a pair of guide holders may pass through each spiral guide ball and vertical guide ball to be coupled to the exhaust head. Additionally, one area on the other side of the pair of guide holders may be inserted across the spiral guide ball and the vertical guide ball to be able to move along the spiral guide ball and the vertical guide ball. Here, the pair of guide holders moves the exhaust head inside the inner frame up and down according to the forward and reverse rotation of the inner frame.

In an embodiment of the present invention, it is assumed that the intake opening and closing module opens and closes the intake port with the same structure as the exhaust opening and closing module.

The hot air module according to an embodiment of the present invention may be configured to include a hot air opening/closing module and a hot air fan.

In one embodiment, the hot air opening and closing module is installed on the lower plate inside the flow space and can open and close the hot air vent.

The hot air opening and closing module according to an embodiment of the present invention may be configured to include a support bracket, a wind guard, a hot air head, and a hot air lifting module.

In one embodiment, the support bracket is installed on the lower plate inside the flow space and may have a cylindrical shape.

In one embodiment, the wind guard is supported by a support bracket inside the support bracket and is open in a vertical direction to allow hot air from the hot air fan to flow into the bathroom.

In one embodiment, the hot air head is installed to be able to move up and down inside the wind guard, so that the wind guard can be opened and closed. Here, the hot air lifting module can lift and move the hot air head.

In an embodiment of the present invention, the support bracket may include a ball bracket extending downward from the inner wall surface inward, and a ball magnet installed at an inner end of the ball bracket.

In addition, the wind guard may include a Sarah bracket extending inward from the inner wall surface, and a Sarah magnet installed on the Sarah bracket toward the ball magnet and attached to the ball magnet by magnetic force.

Here, the wind guard is supported on the support bracket by the magnetic force of the Sarah magnet and the ball magnet, so that the blowing direction of the wind guard can be adjusted.

The hot air lifting module according to an embodiment of the present invention may be configured to include a hot air lifting motor, a motor bracket, a connecting arm, a crank rod, and a crank shaft.

In one embodiment, the motor bracket may support the hot air lifting motor while coupled to the wind guard.

In one embodiment, one side of the connecting arm is connected to the rotation axis of the hot air lifting motor, and the other side may rotate along the circumferential direction when the hot air lifting motor rotates.

In one embodiment, the crank rod may be formed with a T-shaped horizontal guide groove into which the other side of the connecting arm is inserted.

In addition, the crank shaft may be coupled to the hot air head by extending along the direction of the rotation axis of the hot air lifting motor with one end of the crank shaft coupled to the crank rod.

Here, the other side of the connecting arm moves along the horizontal guide groove as the hot air lifting motor rotates, so that the vertical movement of the crank rod and crank shaft in the vertical direction can be transmitted to the lifting and lowering movement of the hot air head.

In one embodiment, the hot air fan may be installed inside the housing while being placed on top of the hot air opening/closing module, and blow hot air into the bathroom through the hot air opening/closing module.

The bathroom ventilation device with a hot air drying function according to the present invention has one or more of the following effects.

First, a bathroom ventilation device is provided in which the interior of the housing is divided into a hot air space and an exhaust space by a partition wall, providing an environment in which the exhaust function and the hot air drying function can be performed simultaneously.

Second, the exhaust function and the hot air drying function are executed simultaneously, making it possible to minimize situations in which hot air with high humidity is provided through the exhaust function without installing a separate moisture removal structure.

Third, through selective operation of a pair of exhaust fans, a pair of exhaust ports, and a pair of exhaust opening/closing modules, a quick exhaust mode for rapid exhaust and a low-noise exhaust mode for low-noise exhaust are provided.

Fourth, the partition wall is configured to open and partition the hot air space and the exhaust space, providing the effect of enabling operation in various modes.

Figure 1 is a diagram showing a state in which a bathroom ventilation device with a hot air drying function according to an embodiment of the present invention is installed on the bathroom ceiling.
Figure 2 is a perspective view of a bathroom ventilation device with a hot air drying function according to an embodiment of the present invention.
Figure 3 is a control block diagram of a bathroom ventilation device with a hot air drying function according to an embodiment of the present invention.
Figure 4 is a diagram for explaining examples of operating modes of a bathroom ventilation device with a hot air drying function according to an embodiment of the present invention.
FIG. 5 is a cross-sectional view taken along line V-V in FIG. 1.
Figure 6 is a perspective view of an exhaust opening/closing module according to an embodiment of the present invention.
Figure 7 is an exploded perspective view of an exhaust opening/closing module according to an embodiment of the present invention.
Figure 8 is a top plan view of the outer case and inner case of the exhaust opening and closing module according to an embodiment of the present invention.
Figure 9 is a perspective view of a hot air opening and closing module according to an embodiment of the present invention.
Figure 10 is an exploded perspective view of a hot air opening and closing module according to an embodiment of the present invention.
Figure 11 is a perspective view of the head lifting module and the hot air head of the hot air opening and closing module according to an embodiment of the present invention.
Figure 12 is a cross-sectional view taken along the line ⅩⅡ-ⅩⅡ.

The advantages and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below and may be implemented in various different forms. The present embodiments are merely provided to ensure that the disclosure of the present invention is complete and to be understood by those skilled in the art in the technical field to which the present invention pertains. It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Figure 1 is a diagram showing a state in which a bathroom ventilation device 10 with a hot air drying function according to an embodiment of the present invention is installed on the bathroom ceiling C, and Figure 2 is a diagram showing a state in which a bathroom ventilation device 10 with a hot air drying function according to an embodiment of the present invention is installed. This is a perspective view of the bathroom ventilation device 10.

When described with reference to FIGS. 1 and 2 , the bathroom ventilation device 10 according to an embodiment of the present invention may be configured to include a housing 100.

The housing 100 according to an embodiment of the present invention may be embedded in the ceiling C of the bathroom so that the lower plate 110 is exposed toward the bathroom. Also, flow spaces 131 and 132 may be formed inside the housing 100. Here, the flow spaces 131 and 132 not only provide a flow path through which air can flow to perform the hot air function and the exhaust function, but also provide an installation space for components to be described later.

In one embodiment, the housing 100 may include a lower plate 110, a side plate 120, and an upper plate 130. As previously described, the lower plate 110 may be exposed on the ceiling (C) side of the bathroom to form the ceiling (C) side appearance of the bathroom ventilation device 10 according to an embodiment of the present invention.

The upper plate 130 is disposed to be spaced upward from the lower plate 110. And, the side plate 120 connects the upper plate 130 and the lower plate 110 to form flow spaces 131 and 132 therein.

In an embodiment of the present invention, the plate surfaces of the upper plate 130 and the lower plate 110 are provided in a race track shape, and the anode edge on the longitudinal side has a round shape.

The bathroom ventilation device 10 according to an embodiment of the present invention may be configured to include a partition wall 140. The partition wall 140 divides the flow spaces 131 and 132 inside the housing 100 into an exhaust space 131 and a hot air space 132. In one embodiment, the partition wall 140 is installed to partition the exhaust space 131 and the hot air space 132 in the longitudinal direction.

The bathroom ventilation device 10 according to an embodiment of the present invention may be configured to include at least two exhaust ports 111. Here, the exhaust port 111 may be formed by penetrating the lower plate 110 of the housing 100 in the vertical direction so that the exhaust space 131 communicates with the bathroom.

In the embodiment of the present invention, two exhaust ports 111 are formed as an example, but the technical idea of the present invention is not limited to this, and of course, three or more exhaust ports 111 can be formed. Hereinafter, the formation of two exhaust ports 111 will be described as an example.

The bathroom ventilation device 10 according to an embodiment of the present invention may be configured to include a hot air vent 113 and an intake port 112. Each of the hot air vent 113 and the suction port 112 may be formed by penetrating the lower plate 110 of the housing 100 in the vertical direction so that the hot air space 132 and the bathroom communicate with each other.

In an embodiment of the present invention, as an example, a heating port 113, a suction port 112, and two exhaust ports 111 are sequentially formed in a row along the longitudinal direction on the lower plate 110, a detailed description of which will be described later. .

The bathroom ventilation device 10 according to an embodiment of the present invention may be configured to include an exhaust opening/closing module 300. The exhaust opening/closing module 300 is installed in the housing 100 and can open and close each exhaust port 111.

In an embodiment of the present invention, it is assumed that two exhaust ports 111 are formed in the lower plate 110, and two exhaust opening and closing modules 300 open and close each exhaust port 111.

The bathroom ventilation device 10 according to an embodiment of the present invention may be configured to include at least one exhaust fan 210. The exhaust fan 210 communicates with the exhaust space 131 inside the housing 100 and can exhaust air from the bathroom through the exhaust port 111.

In an embodiment of the present invention, two exhaust fans 210 are used as an example. Also, as an example, one exhaust fan 210 and one exhaust opening/closing module 300 operate in synchronization with each other. For example, when one exhaust fan 210 operates, the exhaust opening/closing module 300 linked with the corresponding exhaust fan 210 opens the exhaust port 111, and when the other exhaust fan 210 operates, the exhaust opening/closing module 300 opens the exhaust port 111. Another exhaust opening/closing module 300 linked to the exhaust fan 210 may open the exhaust port 111. Here, the pair of exhaust fans 210 can operate individually, and the pair of exhaust fans 210 can operate simultaneously, which will be described later.

The bathroom ventilation device 10 according to an embodiment of the present invention may be configured to include a hot air module 400 and a hot air opening/closing module 420. The hot air module 400 is installed in the housing 100 and can blow hot air into the bathroom through the hot air outlet 113.

The suction opening/closing module 300a is installed in the housing 100 to open and close the suction port 112. Here, the suction opening/closing module 300a opens the suction port 112 so that air from the bathroom is sucked into the hot air space 132 when the hot air module 400 operates, so that the bathroom and the hot air space according to the operation of the hot air module 400 It enables the sharing flow of (132).

According to the above configuration, inside the housing 100, the flow of air by the hot air module 400 and the flow of air by the exhaust fan 210 are partitioned by the partition wall 140, and the hot air module 400 ) and the exhaust fan 210 operate simultaneously, mutually independent flow paths can be formed inside the housing 100, providing a paid environment in which the hot air drying function and the exhaust function can be performed simultaneously.

In addition, when the hot air drying function and the exhaust function are executed simultaneously, that is, when the hot air module 400 is operated while the intake opening and closing module 300a opens the intake port 112, one of the pair of exhaust opening and closing modules 300 The exhaust fan 210 may be operated with at least one exhaust port 111 open. In one embodiment, the two exhaust plates may operate together with both exhaust ports 111 open.

As described above, when the hot air drying function and the exhaust function are executed simultaneously, while the moist air in the bathroom is quickly exhausted through the exhaust port 111, hot air is provided to the user according to the operation of the hot air module 400 to perform the hot air drying function. becomes available.

Therefore, there are problems with the prior art in which the hot air drying function and the exhaust function are executed separately, that is, the time-consuming problem of executing the hot air drying function after executing the exhaust function, and the problem of executing the hot air drying function without executing the exhaust function. Thus, the problem of receiving hot air with high humidity can also be solved.

In addition, the effect of reducing the manufacturing cost and size of the product is also provided by not installing a moisture removal structure, that is, a dehumidification structure, which was installed to solve the problem of high humidity hot air.

Meanwhile, the partition wall 140 according to an embodiment of the present invention is installed in the housing 100 to enable mutual opening and partitioning of the exhaust space 131 and the hot air space 132. That is, the partition wall 140 can open the exhaust space 131 and the hot air space 132 to allow air to flow between them. In addition, as described above, the partition wall 140 may partition the two spaces so that the exhaust space 131 and the hot air space 132 are closed to each other.

In one embodiment, a communication opening is formed in the partition wall 140 to communicate the exhaust space 131 and the hot air space 132, and the two spaces can be opened or partitioned through a damper structure that opens and closes the communication opening. As another example, a part of the partition wall 140 may slide to the remaining part to open or partition the two spaces. Here, the structure in which the partition wall 140 opens and partitions the exhaust space 131 and the hot air space 132 may be implemented in various forms.

Figure 3 is a control block diagram of a bathroom ventilation device 10 with a hot air drying function according to an embodiment of the present invention.

Referring to FIG. 3, as described above, it may be configured to include two exhaust opening/closing modules 300, two exhaust fans 210, an intake opening/closing module 300a, and a hot air module 400. Additionally, the bathroom ventilation device 10 may be configured to include a partition opening/closing module 140a.

In one embodiment, the partition opening and closing module 140a may operate to open and close the damper structure described above and may slide a portion of the partition wall 140.

The bathroom ventilation device 10 according to an embodiment of the present invention may be configured to include a communication unit 520, a remote controller 530, and a controller 510.

The remote controller 530 is placed outside the housing 100 and can transmit various signals to the controller 510 according to the user's manipulation. In one embodiment, the remote controller 530 may be removably installed on the wall of a bathroom. As another example, the remote controller 530 may be placed embedded in a wall of a bathroom. As another example, it is provided as a function of a smart mirror installed in a bathroom, and a signal can be transmitted through a touch on the screen of the smart mirror.

The communication unit 520 according to an embodiment of the present invention is installed in the housing 100 and can receive signals from the remote controller 530. In one embodiment, the communication unit 520 may receive a signal from the remote controller 530 through an infrared communication method, Bluetooth communication, or Zigbee communication method.

Through the above configuration, the user can select and use various operating modes according to an embodiment of the present invention by manipulating the remote controller 530. Hereinafter, examples of operating modes of the bathroom ventilation device 10 according to an embodiment of the present invention will be described with reference to FIGS. 1 and 4.

First, as shown in (a) of FIG. 4, when the hot air module 400 and the exhaust fan 210 are not operating, the pair of exhaust ports 111 and the intake port 112 are connected to each exhaust opening and closing module ( It is maintained in a closed state by 300) and the suction opening/closing module (300a).

In an embodiment of the present invention, when the hot air module 400 is not operating, the hot air outlet 113 is maintained in a closed state by the hot air opening and closing module 420 of the hot air module 400, which will be described later. This will be described later.

For example, the bathroom ventilation device 10 according to an embodiment of the present invention is provided to be operable in a first operation mode and a second operation mode. The first operating mode is operated with the partition wall 140 opening the exhaust space 131 and the hot air space 132. And, the second operating mode operates with the partition wall 140 dividing the exhaust space 131 and the hot air space 132. Here, the second operating mode can also be applied to an embodiment in which the partition wall 140 is not provided to be openable and closed, but is fixed in a state in which the exhaust space 131 and the hot air space 132 are partitioned.

The second operating mode according to an embodiment of the present invention includes at least one of a hot air mode, a quick exhaust mode, and a low noise exhaust mode.

In one embodiment, when the user selects the quick exhaust mode through manipulation of the remote controller 530, as shown in (b) of FIG. 4, the controller 510 operates a pair of exhaust opening and closing modules 300. Each exhaust port 111 is controlled to open, and both exhaust fans 210 are operated. Here, the controller 510 maintains the hot air outlet 113 and the suction port 112 in a closed state by the hot air opening/closing module 420 and the suction opening/closing module 300a, respectively, in the quick exhaust mode.

As described above, in the quick exhaust mode, all exhaust ports 111 are opened and all exhaust fans 210 are in operation, making it possible to quickly exhaust air, such as water vapor, in the bathroom.

In one embodiment, when the user selects the low-noise exhaust mode through manipulation of the remote controller 530, as shown in FIG. 1, the controller 510 selects one of the pair of exhaust opening and closing modules 300 to open the exhaust port. (111) is controlled to open, and one of the pair of exhaust fans (210) is operated. Here, the controller 510 maintains the hot air outlet 113 and the suction port 112 in a closed state by the hot air opening/closing module 420 and the suction opening/closing module 300a, respectively, in the low-noise exhaust mode.

As described above, in the low-noise exhaust mode, only one of the exhaust ports 111 and the exhaust fan 210 operates, and compared to the quick exhaust mode in which two exhaust fans 210 operate, the noise is relatively reduced. You can do it.

In one embodiment, when the user selects the hot air mode through manipulation of the remote controller 530, as shown in (c) of FIG. 4, the controller 510 operates a pair of exhaust opening and closing modules 300. Each exhaust port 111 is controlled to open, and both exhaust fans 210 are operated. In addition, the controller 510 controls the hot air port 113 and the suction port 112 to be opened by the hot air opening/closing module 420 and the suction opening/closing module 300a, respectively, and the hot air module 400 to operate.

Through this, hot air drying by the hot air module 400 is possible in a state in which water air in the bathroom is quickly exhausted through the pair of exhaust ports 111 with both of the pair of exhaust fans 210 operating. , it is possible to minimize the supply of moist hot air by water vapor.

Meanwhile, the controller 510 may control the partition wall opening/closing module 140a in the first operating mode to control the partition wall 140 to open the exhaust space 131 and the hot air space 132. And, as shown in (d) of FIG. 4, the controller 510 causes the hot air opening/closing module 420 to close the hot air vent 113, and the intake opening/closing module 300a and a pair of exhaust opening/closing modules 300. ) can be controlled to open the intake port 112 and the pair of exhaust ports 111, respectively. Also, the controller 510 can operate both the pair of exhaust fans 210 to exhaust the air in the bathroom.

Through this configuration, the air in the bathroom flows in and is exhausted not only through the pair of exhaust ports 111 but also through the intake port 112, thereby increasing the amount of exhausted air and improving the exhaust speed.

Referring again to FIG. 2 , for example, the exhaust fan 210 according to an embodiment of the present invention is installed outside the housing 100 and connected to the housing 100 through the connection duct 220.

Here, as described above, as an example, a pair of exhaust fans 210 are applied, and a pair of connection ducts 220 connect each exhaust fan 210 and the exhaust space 131 of the housing 100. Take connection as an example. In one embodiment, the connection duct 220 is provided in the form of a corrugated pipe.

In addition, as an example, a pair of communication holes 123 penetrating the side plate 120 of the housing 100 are formed. Accordingly, the pair of connection ducts 220 may be connected to the exhaust space 131 through each communication hole 123.

And, the exhaust fan 210 is connected to the exhaust duct 230 that communicates with the outside of the bathroom, and exhausts the bathroom air flowing through the connection duct 220 to the outside.

In an embodiment of the present invention, it is assumed that a pair of exhaust dampers 240 that open and close each communication hole 123 are installed. Here, the controller 510 opens the exhaust damper 240 only when the exhaust fan 210 operates, so that when the exhaust fan 210 is not operating, external air flows into the housing 100 through the exhaust duct 230 and the connection duct 220. It can block the inflow inside.

Meanwhile, FIG. 5 is a cross-sectional view taken along line V-V in FIG. 1. As shown in FIG. 5, a pair of exhaust opening/closing modules 300 and an intake opening/closing module 300a are installed in the housing 100, respectively, inside the housing 100. As an example, it is fixedly installed on the lower plate 110 of the housing 100.

In addition, the hot air module 400 has a structure in which the hot air fan 410 and the hot air opening and closing module 420 are arranged vertically, a detailed description of which will be described later.

Hereinafter, an example of the configuration of the exhaust opening/closing module 300 according to an embodiment of the present invention will be described in detail with reference to FIGS. 6 to 8. Figure 6 is a perspective view of the exhaust opening and closing module 300 according to an embodiment of the present invention, Figure 7 is an exploded perspective view of the exhaust opening and closing module 300 according to an embodiment of the present invention, and Figure 8 is a perspective view of the exhaust opening and closing module 300 according to an embodiment of the present invention. This is a top plan view of the outer case and inner case of the exhaust opening/closing module 300.

When described with reference to FIGS. 6 to 8 , the exhaust opening/closing module 300 according to an embodiment of the present invention may be configured to include an exhaust head 310 and an exhaust lifting module.

As shown in FIGS. 1 and 2, the exhaust head 310 according to an embodiment of the present invention protrudes toward the lower side of the bottom plate to open the exhaust port 111, and rises toward the bottom plate to close the exhaust port 111. can do.

Also, the exhaust lifting module can move the exhaust head 310 up and down. Here, the exhaust lifting module lifts and moves the exhaust head 310 while being fixed to the bottom plate inside the housing 100.

The exhaust lifting module according to an embodiment of the present invention may be configured to include an outer frame 330. The outer frame 330 may be installed on the floor plate within the flow spaces 131 and 132, that is, the exhaust space 131. In addition, the outer frame 330 may have a cylindrical shape that is open toward the lower direction, that is, toward the exhaust port 111.

The exhaust lifting module according to an embodiment of the present invention may be configured to include an inner frame 320. The inner frame 320 may be arranged to be rotatable about an axis in the vertical direction while being accommodated inside the outer frame 330. In addition, the exhaust head 310 is disposed within the inner frame 320 to be able to move up and down, and the lower part of the exhaust head 310 has a cylindrical shape open downward so that it can be discharged through the exhaust port 111. You can.

The exhaust lifting module according to an embodiment of the present invention may be configured to include an exhaust lifting motor 350. The exhaust lifting motor 350 rotates the inner frame 320 while being supported by the outer frame 330. Accordingly, when the exhaust lifting motor 350 rotates, the inner frame 320 rotates about the axis in the vertical direction inside the outer frame 330.

Referring to FIG. 8 , air flow holes 324 and 333 may be formed on the upper sides of the inner frame 320 and the outer frame 330, respectively, to allow air to flow. As an example, air flow holes 324 and 333 may be formed between the cylindrical inner frame 320 and a plurality of support bars 323 and 332 extending inward from the lower end of the outer frame 330.

In one embodiment, an installation bracket 334 on which the exhaust lifting motor 350 is installed may be provided on the radial inner side of the plurality of support bars 332 of the outer frame 330. Here, the lifting motor may be fixedly installed on the installation bracket 334 with its rotation axis extending toward the inner frame 320 through the shaft passage hole 335 formed in the installation bracket 334.

In one embodiment, a shaft coupling hole 325 coupled to the rotation axis of the exhaust lifting motor 350 may be formed on the radial inner side of the plurality of support bars 325 of the inner bracket. Through this, when the exhaust lifting motor 350 rotates, the inner bracket rotates on its axis in the vertical direction inside the outer bracket.

Meanwhile, the exhaust lifting module according to an embodiment of the present invention may be configured to include a pair of guide balls. A pair of vertical guide holes 321 may be formed by penetrating the side plate of the inner frame 320 in the lateral direction. In one embodiment, the pair of vertical guide balls 321 may be formed symmetrically on both sides with respect to the vertical axis. And, it may be formed along the vertical direction on the side plate of the frame.

Additionally, the exhaust lifting module according to an embodiment of the present invention may be configured to include a pair of spiral guide balls 331. A pair of spiral guide holes 331 may be formed by penetrating the side plate of the outer case in the lateral direction. In one embodiment, the pair of spiral guide balls 331, like the vertical guide balls 321, may be formed symmetrically on both sides with respect to the vertical axis. Here, for example, the spiral guide hole 331 is formed in a spiral shape along the circumferential direction on the side plate of the outer frame 330.

The exhaust lifting module according to an embodiment of the present invention may be configured to include a pair of guide holders 340.

One side of each guide holder 340 may be coupled to the exhaust head 310 by sequentially passing through the spiral guide ball 331 and the vertical guide ball 321 at corresponding positions. And the other area of the guide holder can be inserted across the spiral guide ball 331 and the vertical guide ball 321 to be able to move along the spiral guide ball 331 and the vertical guide ball 321.

According to the above configuration, when the inner frame 320 rotates forward and backward according to the forward and reverse rotation of the exhaust lifting motor 350, the exhaust head 310 moves up and down inside the inner frame 320.

To be more specific, when the inner frame 320 rotates, the guide holder 340 rotates together with the inner frame 320 while being caught on the vertical guide ball 321. The guide holder 340 rotates While moving along the spiral guide ball 331, the height in the vertical direction increases.

Accordingly, the exhaust head 310 coupled to one side of the guide holder 340 rotates together with the rotation of the inner frame 320 and can move up and down. At this time, since the guide holder 340 moves up and down along the vertical guide hole 321 of the inner frame 320, the inner frame 320 moves along the vertical direction inside the outer frame 330 without moving up and down. It just rotates.

Here, a guide rod 322 protruding downward may be formed inside the inner frame 320. The guide rod 322 is inserted into the exhaust head 310 to guide the exhaust head 310 to stably move up and down within the inner frame 320.

In the above-described embodiment, a pair of vertical guide balls 321 are formed in the inner frame 320, and one spiral guide ball 331 is formed in the outer frame 330. However, the positions may be changed. do.

Meanwhile, the exhaust head 310 according to an embodiment of the present invention may be configured to include a head cover 316 and a head body 311.

In one embodiment, the head cover 316 may be coupled to the lower side of the head body 311 to form the exterior of the exhaust head 310.

Here, the head body 311 may be configured to include a disc-shaped lower body 314 and an upper body 312 spaced apart in the vertical direction. Also, the lower body 314 and the upper body 312 may be connected through the upper and lower extension portions 313. The upper and lower extension portions 313 may have a shape whose diameter becomes thinner toward the middle portion in the vertical direction.

In addition, the plate surface of the upper body 312 has the shape of a grill 315 penetrating upward and downward, so that when the exhaust port 111 is opened, the bathroom air flowing upward along the upper and lower extension portions 313 enters the exhaust space. It becomes possible to flow toward the (131) side. Here, a holder coupling portion 314a to which the guide holder 340 is coupled may be formed in the upper body 312.

In an embodiment of the present invention, it is assumed that the intake opening and closing module 300a is formed in the same structure as the exhaust opening and closing module 300 described above. The configuration of the intake opening and closing module 300a is that of the exhaust opening and closing module 300 described above. Replace with explanation.

Hereinafter, an example of the configuration of the hot air module 400 of the bathroom ventilation device 10 according to an embodiment of the present invention will be described with reference to FIGS. 9 to 12.

As shown in Figure 5, the hot air module 400 according to an embodiment of the present invention is configured to include a hot air opening and closing module 420 and a hot air fan 410.

In one embodiment, the hot air opening and closing module 420 is installed on the lower plate inside the flow spaces 131 and 132, that is, in the distribution of the hot air space 132, and can open and close the hot air vent 113.

As shown in FIGS. 9 to 12, the hot air opening and closing module 420 according to an embodiment of the present invention includes a support bracket 424, a wind guard 423, a hot air head 421, and a head hot air lifting module 422. ) may be configured to include.

The support bracket 424 according to an embodiment of the present invention is installed on the lower plate inside the flow spaces 131 and 132, and may have a cylindrical shape. Here, the support bracket 424 has a cylindrical shape that is open in the vertical direction.

The wind guard 423 may be supported by the support bracket 424 inside the support bracket 424 . Additionally, the wind guard 423 can be opened in the vertical direction to allow hot air from the hot air fan 410 to flow into the bathroom.

The hot air head 421 is installed to be able to move up and down inside the wind guard 423, so that the wind guard 423 can be opened and closed. Here, when the hot air head 421 closes the wind guard 423, the flow of hot air through the wind guard 423 is blocked, and as a result, the hot air outlet 113 may be closed. On the other hand, when the hot air head 421 opens the wind guard 423, hot air can flow through the wind guard 423, thereby creating a structure in which the hot air vent 113 is opened.

The hot air lifting module 422 according to an embodiment of the present invention can lift and move the hot air head 421. In one embodiment, the hot air lifting module 422 includes a hot air lifting motor 4221, a motor bracket 4222, a connecting arm 4221a, a crank rod 4223, and a crank shaft 4224. .

The motor bracket 4222 according to an embodiment of the present invention can support the hot air lifting motor 4221 while coupled to the wind guard 423.

One side of the connecting arm 4221a according to an embodiment of the present invention may be connected to the rotation axis of the hot air lifting motor 4221. And, the other side of the connecting arm (4221a) extends in the circumferential direction of the rotation axis of the hot air lifting motor 4221, and rotates along the circumferential direction as the hot air lifting motor 4221 rotates.

A T-shaped horizontal guide groove 4223a may be formed in the crank rod 4223 according to an embodiment of the present invention. Here, the other side of the connecting arm 4221a may be inserted into the horizontal guide groove 4223a.

According to this configuration, when the hot air lifting motor 4221 rotates, the other side of the connecting arm 4221a moves along the T-shaped horizontal guide groove 4223a, and the crank rod 4223 moves vertically in the vertical direction. It becomes possible. At this time, since the motor bracket 4222 is fixed to the wind guard 423, the vertical movement of the crank rod 4223 in the vertical direction is a relative movement with respect to the wind guard 423.

Meanwhile, the crank shaft 4224 may be arranged to extend along the rotation axis direction of the hot air lifting motor 4221, with one end of the crank shaft 4224 coupled to the crank rod 4223. And, the crankshaft 4224 may be coupled to the hot air head 421 at the lower side of the hot air head 421.

Here, in the embodiment of the present invention, the hot air head 421 is configured to include a head plate 4211 and a pair of connecting bars 4212 extending upward from the head plate 4211. And, the connecting bar 4212 may be coupled to the crankshaft 4224 at the upper side.

According to the above configuration, the vertical movement of the crank rod 4223 in the vertical direction is transmitted to the hot air head 421 through the crank shaft 4224, so that the hot air head 421 moves up and down inside the wind guard 423. While doing so, the wind guard 423 is opened and closed.

Meanwhile, the support bracket 424 according to an embodiment of the present invention may be configured to include a ball bracket 4241 and a ball magnet 4242, as shown in FIG. 12. And, the wind guard 423 may be configured to include a Sarah bracket 4231 and a Sarah magnet 4232.

In one embodiment, the ball bracket 4241 may extend downward from the inner wall surface of the support bracket 424 toward the inside. Additionally, the ball magnet 4242 may be installed at the inner end of the ball bracket 4241.

In one embodiment, the Sarah bracket 4231 may extend inward from the inner wall surface of the wind guard 423. In addition, the Sarah magnet 4232 is installed on the Sarah bracket 4231 and can be installed toward the ball magnet 4242.

In an embodiment of the present invention, it is assumed that the wind guard 423 is supported on the support bracket 424 by being attached by the magnetic force of the ball magnet 4242 and the Sarah magnet 4232. That is, as described above, the motor bracket 4222 constituting the hot air lifting module 422 is installed on the wind guard 423 and supports the hot air head 421 so that it can move up and down, and the hot air head 421 ), the wind guard 423 and the hot air lifting module 422 are coupled to each other.

In addition, the wind guard 423 is supported on the support bracket 424 by the combination between the ball magnet 4242 and the Sarah magnet 4232, so that the hot air opening and closing module 420 according to an embodiment of the present invention is connected to the lower plate 110. It becomes possible to install.

Here, the Sarah magnet 4232 is formed with a round groove on the plate surface that is coupled to the ball magnet 4242, and is coupled to the ball magnet 4242, so that the wind guard 423 is connected to the support bracket 424 as desired. Rotation or tilting in any direction is possible.

Therefore, the user can adjust the blowing direction of the wind guard 423 by rotating or tilting the wind guard 423.

Here, in the embodiment of the present invention, it is assumed that the weight 4213 is formed on the upper side of the hot air head 421. Through this, when the wind guard 423 is rotated or tilted, the weight can be rotated or tilted together to provide a force that maintains the position. Therefore, it is possible to minimize the situation in which the wind guard 423 moves to its original position due to gravity.

In the embodiment of the present invention, securing the installation space for the hot air lifting motor 4221 and the motor bracket 4222, and securing the space for movement of the hot air lifting motor 4221 and the motor bracket 4222 according to the movement of the wind guard 423. For this purpose, as an example, a cutout portion in which a portion of the side plate of the support bracket 424 is cut off is formed in the support bracket 424.

Meanwhile, as shown in FIG. 5, the hot air fan 410 may blow hot air to the hot air opening and closing module 420 while being disposed on the upper part of the hot air opening and closing module 420. In an embodiment of the present invention, it is assumed that the hot air fan 410 includes a pair of axial fans 411 and a heating wire 412. Here, as an example, fixed blades are installed between a pair of axial fans 411 to increase blowing pressure.

Although embodiments of the present invention have been described above with reference to the attached drawings, the present invention is not limited to the above embodiments and can be manufactured in various different forms, and can be manufactured in various different forms by those skilled in the art. It will be understood by those who understand that the present invention can be implemented in other specific forms without changing its technical spirit or essential features. Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive.

10: bathroom ventilation device 100: housing
110: lower plate 111: exhaust port
112: suction port 113: hot air vent
120: side plate 123: communication hole
130: upper plate 131: exhaust space
132: hot air space 140: partition wall
140a: Bulkhead opening and closing module 210: Exhaust fan
220: connection duct 230: exhaust duct
240: exhaust damper 300: exhaust opening and closing module
310: exhaust head 311: head body
312: upper body 313: upper and lower extension parts
314: lower body 315: grill
316: Head cover 320: Inner frame
321: Vertical guide ball 322: Guide rod
330: Outer frame 331: Spiral guide ball
340: Guide holder 350: Exhaust lifting motor
400: hot air module 410: hot air fan
411: Axial fan 412: Heating wire
420: Hot air opening/closing module 421: Hot air head
4211: Head plate 4212: Connecting bar
422: Hot air lifting module 4221: Hot air lifting motor
4221a: Connecting arm 4222: Motor bracket
4223: Crank rod 4223a: Horizontal guide groove
4224: Crankshaft 423: Wind Guard
4231: Sarah Bracket 4232: Sarah Magnet
424: Support bracket 4241: Ball bracket
4242: Ball magnet 4243: Cutout part

Claims (18)

a housing embedded in the ceiling of the bathroom so that the lower plate is exposed toward the bathroom, and a housing having a flow space formed therein;
a partition wall dividing the flow space into an exhaust space and a hot air space;
at least two exhaust ports formed in the lower plate to communicate with the exhaust space and the bathroom;
a hot air vent and a suction port formed in the lower plate to communicate with the hot air space and the bathroom;
At least two exhaust opening/closing modules installed in the housing to open and close each exhaust port;
at least one exhaust fan that communicates with the exhaust space and exhausts air from the bathroom through the exhaust port;
a hot air module installed in the housing to blow hot air into the bathroom through the hot air vent;
Bathroom ventilation with a hot air drying function, characterized in that it includes a suction opening and closing module installed in the housing to open and close the suction port, and opening the suction port to allow air from the bathroom to be sucked into the hot air space when the hot air module operates. Device. According to paragraph 1,
A bathroom ventilation device with a hot air drying function, wherein the hot air vent, the suction port, and at least two or more exhaust ports are sequentially formed in a row on the lower plate in one direction. According to paragraph 1,
A bathroom ventilation device with a hot air drying function, wherein when the hot air module operates, the exhaust fan operates with at least one of the exhaust opening/closing modules opening the exhaust port. According to paragraph 3,
A pair of exhaust ports are formed in the lower plate;
A bathroom ventilation device with a hot air drying function, wherein the exhaust opening/closing module and the exhaust fan are installed in pairs, and one exhaust opening/closing module and one exhaust fan operate in synchronization with each other. According to paragraph 4,
A bathroom ventilation device with a hot air drying function, wherein when the hot air module operates, the pair of exhaust fans operates with each exhaust port opened by each exhaust opening/closing module. According to paragraph 4,
A quick exhaust mode in which a pair of exhaust fans operate in a state in which the hot air outlet and the intake port are closed by the hot air module and the intake opening and closing module, and each exhaust port is opened by each of the exhaust opening and closing modules; ;
In a state where the hot air vent and the intake port are closed by the hot air module and the intake opening/closing module, and any one of the pair of exhaust ports is opened by the corresponding exhaust opening/closing module, one of the pair of exhaust fans A bathroom ventilation device with a hot air drying function, characterized in that it can be operated in any of the low-noise exhaust modes. According to paragraph 1,
A bathroom ventilation device with a hot air drying function, wherein the partition wall is installed in the housing to enable mutual opening and partition between the exhaust space and the hot air space. In clause 7,
Operating in one of a first operating mode in which the partition wall operates in a state in which the exhaust space and the hot air space are opened, and a second operating mode in which the partition wall operates in a state in which the exhaust space and the hot air space are partitioned. A bathroom ventilation device having a hot air drying function. According to clause 8,
The first operating mode includes an exhaust mode in which the exhaust fan operates with the intake port opened by the intake opening and closing module and the exhaust port opened by the exhaust opening and closing module. A bathroom ventilation device having a. According to clause 8,
The second operating mode is
a hot air mode in which the hot air module and the exhaust fan operate with the intake port opened by the intake opening and closing module and at least one exhaust port opened by the corresponding exhaust opening and closing module;
a quick exhaust mode in which the exhaust fan operates while the intake port is closed by the intake opening/closing module and at least two of the exhaust ports are opened by the corresponding exhaust opening/closing module;
Characterized in that it includes at least one of a low-noise exhaust mode in which the exhaust fan operates in a state in which the intake portion is closed by the intake opening and closing module, and some of the at least two exhaust ports are opened by the corresponding exhaust opening and closing module. Bathroom ventilation device with hot air drying function. According to claim 9 or 10,
A bathroom ventilation device with a hot air drying function, wherein the hot air module closes the hot air vent when not operating. According to paragraph 1,
The exhaust opening/closing module is
an exhaust head that protrudes toward a lower side of the bottom plate to open the exhaust port and rises toward the bottom plate to close the exhaust port;
A bathroom ventilation device with a hot air drying function, comprising an exhaust elevating module that raises and lowers the exhaust head. According to clause 12,
The exhaust lifting module is
a cylindrical outer frame installed on the bottom plate within the flow space and open downward;
It is arranged to be rotatable about an axis in the vertical direction while accommodated inside the outer frame, and the exhaust head is disposed therein to move up and down, and the lower part of the exhaust head has a cylindrical shape open downward to discharge toward the exhaust port. Inner frame and;
an exhaust lifting motor supported by the outer frame and rotating the inner frame;
a pair of vertical guide holes formed through a side plate of one of the inner frame and the outer case and formed along a vertical direction;
a pair of spiral guide holes formed through a side plate of the other one of the inner frame and the outer case and formed in a spiral shape along a circumferential direction;
One side passes through each of the spiral guide ball and the vertical guide ball and is coupled to the exhaust head, and one area of the other side is capable of moving along the spiral guide ball and the vertical guide ball. A bathroom ventilation device with a hot air drying function, comprising a pair of guide holders that are inserted across and lift and move the exhaust head inside the inner frame according to forward and reverse rotation of the inner frame. According to clause 13,
A bathroom ventilation device with a hot air drying function, wherein the suction opening/closing module opens and closes the intake port in the same structure as the exhaust opening/closing module. According to paragraph 1,
The craze module is
a hot air opening and closing module installed on the lower plate within the flow space and opening and closing the hot air vent;
A bathroom ventilation device with a hot air drying function, comprising a hot air fan disposed above the hot air opening and closing module and installed inside the housing to blow hot air into the bathroom through the hot air opening and closing module. According to clause 15,
The hot air opening and closing module is
a cylindrical support bracket installed on the lower plate within the flow space;
a wind guard inside the support bracket, supported by the support bracket, and open in a vertical direction to allow hot air from the hot air fan to flow into the bathroom;
a hot air head installed to be movable inside the wind guard to open and close the wind guard;
A bathroom ventilation device with a hot air drying function, comprising a hot air lifting module that raises and lowers the hot air head. According to clause 16,
The support bracket is
A ball bracket extending downward inward from the inner wall surface,
It includes a ball magnet installed at an inner end of the ball bracket;
The wind guard is
A Sarah bracket extending medially from the inner wall surface;
It includes a Sarah magnet installed on the Sarah bracket toward the ball magnet and attached to the ball magnet by magnetic force;
The wind guard is supported on the support bracket by the magnetic force of the Sarah magnet and the ball magnet, so that the blowing direction of the wind guard is adjustable. A bathroom ventilation device with a hot air drying function. According to clause 16,
The hot air lifting module is
a hot air lifting motor;
a motor bracket coupled to the wind guard and supporting the hot air lifting motor;
a connecting arm on one side connected to the rotation axis of the hot air lifting motor and on the other side rotating along the circumferential direction when the hot air lifting motor rotates;
a crank rod having a T-shaped horizontal guide groove into which the other side of the connecting arm is inserted;
It includes a crank shaft with one end coupled to the crank rod and extending along the direction of the rotation axis of the hot air lifting motor and coupled to the hot air head;
As the hot air lifting motor rotates, the other side of the connecting arm moves along the horizontal guide groove, and the vertical movement of the crank rod and the crank shaft is transmitted to the lifting movement of the hot air head. A bathroom ventilation device with a hot air drying function.

Images