JP2018004135A - Bathroom ventilation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem in which, in a conventional ventilation device, mold grows due to scattering and attachment to a ceiling of dirt fine particles which generate during bathing.SOLUTION: A bathroom ventilation device 1 is operated during bathing, and the air containing dirt sucked from a suction port 8 is purified by allowing the air to pass through air purification means 12, and an air flow is flowed along a ceiling surface from a circulation air blowout port 9. Thereby, dirt fine particles occurring during bathing are captured, and the fine particles attaching to the ceiling surface is suppressed by the airflow. Thus, the bathroom ventilation device 1 can be acquired which can continuously facilitate moisture drying and suppress growth of mold.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a bathroom ventilator that is embedded in an opening provided in a ceiling of a sanitary space such as a bathroom or a washroom, is connected to a duct that is piped behind the ceiling and communicates with the outside, and ventilates the room.

Conventionally, as this type of bathroom ventilation device, air is supplied to the indoor side from a space different from the room targeted for ventilation, and at the same time, the air in the room to be ventilated is exhausted to further ventilate and dry the room. Bathroom ventilators with increased efficiency are known. (For example, see Patent Document 1)
Hereinafter, this type of bathroom ventilation apparatus will be described with reference to FIG.

  As shown in FIG. 10, a bathroom ventilator body 101 as a ventilator is installed in an attic space or a ceiling space in a building, and at the same time, an air supply type ventilator 102 is installed in a similar space. The ventilator main body 101 has a supply air suction port 104 on the side surface of the main body frame 103 and an exhaust port 105 on the other side surface, and an indoor suction portion 111 on the lower surface so as to cover the indoor side surface of the ventilator main body 101. A decorative grill 106 having an indoor discharge portion 112 is disposed in the periphery. In addition, an electric motor 107 is fixed inside the ventilation apparatus main body 101, and a centrifugal blower blade 108 is fixed to the electric motor 107. The centrifugal blower blade 108 is disposed in an air supply chamber formed by a casing 109, and an orifice 110 is provided below the air supply chamber. An air supply air passage 113 is provided between the main body frame 103 and the casing 109.

  In this structure, indoor air passes through the indoor suction portion 111 by the centrifugal blower blades 108 and is sucked into the ventilator main body 101 from the orifice 110, and then exhausted from the exhaust port 105 to the outside through the exhaust duct. On the other hand, the air supplied from the air supply type ventilator 102 is introduced from the air supply inlet 104, passes through the air supply air passage 113 inside the ventilator main body 101, and passes through the indoor discharge portion 112 of the decorative grill 106 to the room. It is configured to be supplied with air.

Japanese Patent Application Laid-Open No. 7-145973

  In such a conventional bathroom ventilator, since the air can be supplied simultaneously to the bathroom ventilator that performs only indoor exhaust, the ventilation effectiveness is excellent. However, in order to suppress the adhesion of dirt in the air that causes mold, ventilation must be activated during bathing where dirt occurs, and the wind directly hits the person bathing, especially in winter I had the problem of feeling.

  Therefore, the present invention solves the above-described conventional problems, and provides a ventilator that operates during bathing, suppresses generation of mold and residual odor, and prevents direct exposure of a person during bathing. For the purpose.

  In order to achieve this object, the present invention includes a box-shaped frame that is installed on an indoor ceiling surface and has an opening on the lower surface, a blower disposed in the frame, and a ceiling panel that covers the opening. A ventilation port for sucking indoor air into the ceiling panel, and a circulating air outlet for blowing air into the room and circulating it, and the suction port and the circulating air outlet in the frame. A circulation air passage that communicates with the air purification means, and an air purification means that collects dirt in the air in the circulation air passage, and a dirt removal means that removes dirt adhering to the air purification means. This is to achieve the intended purpose.

According to the present invention, a box-shaped frame installed on the ceiling surface of the bathroom and having an opening on the lower surface;
In a bathroom ventilator provided with a blower disposed in the frame and a ceiling panel covering the opening, an air inlet for sucking room air into the ceiling panel and air to blow out and circulate into the room A circulation air outlet, and a circulation air passage communicating the suction opening and the circulation air outlet in the frame, and an air purifying means for collecting dirt in the air in the circulation air passage, A dirt removing means for removing dirt adhering to the air purifying means is provided. As a result, it is possible to operate the ventilator so that it does not directly hit the person during bathing, and it is difficult to feel cold, and the air purified by the air purifying means that can remove the dirt by the dirt removing means Since the circulation air generated by the air can suppress the adhesion of dirt to the surface of the ceiling and walls of the bathroom, it is possible to continuously suppress the generation of mold and odor, The effect is that the wind is not directly hit.

Side surface sectional drawing which shows the bathroom ventilation apparatus of Embodiment 1 of this invention The figure which shows the front structure of the ceiling panel of the Embodiment 1 The figure which shows the steam collection and vaporization filter structure of the air purification means of Embodiment 1 The figure which shows the dirt collection filter structure of the air purifying means of Embodiment 1 The figure which shows the filter structure of the air purification | cleaning means of Embodiment 1. The conceptual diagram which shows the suppression effect of the stain | pollution | contamination adhering to the ceiling of Embodiment 1 The figure which shows the opening degree adjustment state of each air passage of the Embodiment 1, and the airflow inside an apparatus The figure which shows the position of the operation means in the bathroom side surface sectional drawing of Embodiment 1 Flow chart of the regeneration process of the air purification means of the first embodiment Side sectional view showing a conventional ventilation system

  A bathroom ventilator as a ventilator according to the present invention includes a box-shaped frame that is installed on an indoor ceiling surface and has an opening on a lower surface, a blower disposed in the frame, and a ceiling panel that covers the opening. The ventilation device includes a suction port for sucking room air into the ceiling panel, and a circulating air blowing port for blowing and circulating air into the room, and the suction port and the circulating wind blowing in the frame. A circulation air passage communicating with the mouth and an air purification means for collecting dirt in the air in the circulation air passage, and a dirt removal means for removing dirt adhering to the air purification means are provided. As a result, dirt and mold spores generated together with steam during bathing can be collected by air purification means that can remove dirt by the dirt removing means, and the circulation does not contain dirt or mold spores. By allowing the wind to flow along the ceiling and wall surface, the circulation wind on the ceiling and wall surface of the bathroom can prevent dirt from adhering to the surface, thus continuously suppressing mold generation and odor residue. There is an effect.

  The dirt removing means is a heater that heats air, and is characterized by removing dirt adhered to the air purifying means by the air heated by the heater. Thereby, the dirt adhering to the air purification means can be removed at a high temperature, and the adhering dirt can be removed with high controllability with a simple configuration, so that the apparatus can be downsized.

  In addition, an exhaust air passage that exhausts air to the outside is provided, and air containing dirt removed from the air purification means by the dirt removing means is discharged from the exhaust air passage.

  As a result, the dirt accumulated in the air purification means can be removed by the dirt removal means, and the dirt can be discharged to the outside via the exhaust air passage, so the dirt removed from the air purification means in the bathroom is reattached. This has the effect of suppressing the operation.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(Embodiment 1)
As shown in FIG. 1, a bathroom ventilator 1 as a ventilator of the present embodiment is installed on the ceiling of a room (for example, a high humidity bathroom, a dressing room, a washroom, a toilet, a clothes drying room, etc.). . The frame 2 forming the main body has an opening 24 on the lower surface, and an exhaust air passage 4 for connecting a duct 3 communicating to the outside on one side surface.

  A blower 5 is provided inside the frame 2. The blower 5 is fixed to the rotating shaft of the electric motor 6 and has a configuration of a centrifugal type blower that rotates by driving the electric motor 6 and blows air by using a centrifugal force as a starting force.

  Further, the lower surface of the frame 2 has an opening 24 on the indoor side, and the ceiling panel 7 is provided so as to cover the opening 24. As shown in FIG. 2, a suction port 8 for taking in air from the room is provided at the center of the ceiling panel 7. Further, a circulating air outlet 9 for blowing out air in the horizontal direction along the ceiling is provided at the peripheral edge of the ceiling panel 7. The circulating air outlet 9 has four locations near the outer periphery of the ceiling panel 7 and discharges in four directions. In addition, although it described as four places in this Embodiment 1, if it is a form which blows off from the outer peripheral part of the ceiling panel 7, it will not be limited to four places, but the number may be four or less and more than four. Also good.

  The circulating air outlet 9 has an opening area necessary for forming an air flow along the ceiling and an opening height of the opening surface (short axis of the opening surface). The opening height is configured to be smaller than the distance in the height direction between the surface of the ceiling panel 7 and the ceiling surface due to the thickness of the ceiling panel 7. When the opening height is large, the pressure loss is small, so that a larger air volume can be obtained. On the other hand, if the opening height is small, an air flow can be generated only in a space closer to the ceiling surface, and if the air volume is the same, the blowing air speed can be increased and the air can be blown to the peripheral portion of the ceiling surface. For this reason, it is preferable to design an optimal shape that can obtain the blowing air speed and the air volume for obtaining the necessary air speed at the peripheral edge of the ceiling from the size and shape of the room to be installed. The opening height may be, for example, 3 mm or more and 30 mm or less.

  The circulating air outlet 9 is provided with airflow control means 10 for controlling the airflow in order to generate an airflow along the ceiling. The airflow control means 10 is composed of a rectifying plate or a rib having a flat surface or a curved surface for controlling the wind direction, and can be a fixed type or a movable type having a hinge structure as a fixed portion to the ceiling panel 7. In order to flow the airflow along the ceiling, the representative surface of the airflow control means 10 is provided in parallel to the ceiling surface, or an angle is provided toward the ceiling surface. The angle is an extension line in the direction of the air flow of the blown wind as shown in the figure so that the air flow can reach the peripheral part of the ceiling surface along the ceiling surface with a wind speed above a certain level. If the angle between the ceiling surface and the ceiling surface is θ, the angle θ is 0 degrees when blown out parallel to the ceiling surface. For example, the angle θ should be 0 degrees or more and 60 degrees or less and be directed to the ceiling. It is more preferable that the airflow control means 10 is installed facing the ceiling so as to be in the range of 10 degrees or less.

  When the air flow control means 10 is moved, it is preferable that the angle of movement is wide and the opening / closing control of the opening surface of the circulating air outlet 9 can be performed because the air path switching control becomes easy. It can also be used to dry the condensed water on the ceiling after taking a bath using circulating air.In this case, the opening area can be reduced depending on the intended use, such as reducing the opening area to increase the blowing air speed. It is preferable to perform control and adjustment of the opening.

  A circulation air passage 11 that communicates the suction port 8 and the circulation air outlet 9 is provided inside the frame 2. In the circulation air passage 11, the air taken in from the suction port 8 is boosted by the blower 5, and the opening necessary for discharging from the circulation air outlet 9 and the airflow for suppressing the loss of the airflow Form a guide surface. As a result, the loss of airflow, noise, and vibration can be suppressed, air can be efficiently sucked from the suction port 8, and the air can be evenly blown from the plurality of circulating wind outlets 9.

  In the circulation air passage 11, air purification means 12 is provided for collecting and purifying fine particulate dirt contained in the air taken in from the room. The air purification means 12 has a configuration capable of collecting fine particles, and a filtration method, a collision collection method, an electrostatic adhesion method, a centrifugal method, a gas-liquid contact method, or the like can be applied. However, a filtration method that can be downsized with a simple shape and has little structural influence on the air passage is preferable.

  The air purification means 12 shown in FIG. 3 is a steam collecting / vaporizing filter 12a capable of collecting steam containing dirt, mold spores and the like in the air, and is made of a resin having a contact angle of 50 ° to 90 °. Alternatively, the metal filter strands 12c are formed in a mesh structure. The network structure is a structure of a two-dimensional structure or a three-dimensional structure formed by knitting or weaving a thin fibrous material as a strand, and includes a flat knitting, warp knitting, raschel knitting, plain knitting, twill weaving, Folding weave, rhombus knitting, etc. are used. In addition, the steam collecting and vaporizing filter may be further processed after weaving, and if it is formed by waving such as pleating or corrugating, the surface area can be increased with low pressure loss and the collection efficiency can be improved. .

  Moreover, since it becomes easy to adsorb | suck a water | moisture content according to a hydrophilic effect, the collection efficiency of steam can be raised. Moreover, the fiber used at this time should have a wire diameter of 0.1 mm to 5.0 mm, more preferably 0.5 mm to 1.0 mm. By using these thick fibers, less water gets into the back of the fibers, and since it is a hydrophilic material, the water does not solidify and spread throughout, so the collected steam is combined into water droplets It can be vaporized before and prevent water droplets from continuing to accumulate in the mesh. As a result, the steam collection efficiency can be increased while the pressure loss is low.

  Further, the dirt collecting filter 12b as shown in FIG. 4 is a resin or fiber formed in a mesh shape, and is preferably oleophilic. As a result, the water vaporized from the steam collecting and vaporizing filter does not adhere to the dirt collecting filter, while adsorbing lipophilic components such as sebum that could not be collected by the steam collecting and vaporizing filter. it can. Moreover, the fiber used at this time should have a wire diameter of 0.1 mm to 5.0 mm, more preferably 0.1 mm to 1.0 mm. As a result, the dirt and mold spores that could not be collected by the steam collecting and vaporizing filter can be collected by the dirt collecting filter, and the collection efficiency of the air purification means 12 can be improved.

  Further, as shown in FIG. 5, the air purifying means 12 is installed between the suction port 8 and the blower 5, and includes a steam collecting / vaporizing filter 12a and a dirt collecting filter 12b. It is preferable that 12a is on the suction port 8 side and the dirt collecting filter 12b is on the blower 5 side. As a result, the steam is collected by the steam collecting and vaporizing filter 12a. However, the collected steam is vaporized without forming water droplets, so there is no formation of water droplets on the mesh and low pressure loss. Dirt and mold spores that could not be collected by the gas collecting filter 12a can be collected by the dirt collecting filter 12b. Thereby, the collection efficiency can be further increased.

  In addition, as a filter used in the filtration method, other materials that can collect steam and dirt contained in the air in the bathroom, such as those formed by foam or particles, or a punching material or a structure formed by tension or compression As long as it is a porous material, it is not particularly limited.

  Examples of the dirt collected by the air purification means 12 include organic substances containing soap and sebum and other lipids that are generated during bathing and drift in the bathroom on the steam, and mold scattered from the ceiling and walls of the bathroom. The spore is considered. These are considered to occur mainly from bathers during bathing, diffuse into the air in the bathroom, reach the ceiling, wall surface, etc., and condense and adhere as condensed water. Since the main component of condensed water is water, it can be removed by evaporating the water by bathing or drying with warm air, etc., but dirt such as sebum is a high boiling point compound, so after adhering to the wall, It is thought to remain and accumulate by repeated bathing. FIG. 6 is a conceptual diagram of the accumulation and accumulation of dirt due to repeated use of the bathroom. Conventionally, the ventilation fan is stopped during bathing, so that the dirt fills the bathroom and adheres to the ceiling, etc., though in a small amount. By repeating this, it is considered that the amount of dirt gradually increases, leading to the generation of mold (indicated by a broken line B). These organic contaminants also serve as a nutrient source for molds attached to the ceiling and walls, leading to the growth of molds. On the other hand, as shown in this embodiment, if dirt in the air can be collected during bathing and dirt adhesion can be suppressed, accumulation of dirt on the ceiling and wall surface can be prevented, and mold generation can be suppressed. Yes (indicated by solid line A).

  The dirt collected by the air purification means 12 may become a source of mold if it continues to accumulate, so the collected dirt can be removed automatically, or it can be easily removed and washed / removed by the user. Need to be able to. That is, the air purification means 12 can be brought close to the state before use by carrying out a regeneration process for removing dirt collected by the air purification means 12 as it is used. In the regeneration process, removal of attached dirt, that is, dirt removal means for removing and removing dirt, such as removal by air heat desorption, hot water cleaning, detergent cleaning, oxidative decomposition, physical cleaning such as a brush, etc. is used. However, since the structure can be simplified, it is preferable to use the air heating and desorption method as the dirt removing means.

  In order to perform removal by air heating desorption using a heater for heating air as the dirt removing means, an air heating means 13 is provided in the circulation air passage 11 as shown in FIG. The air heating means is for heating the air in the atmosphere by supplying a medium from an internal heat source or an external heat source, and includes a heat radiating plate to increase contact with the air. Examples of the heat source include an electric heater and hot water, but are not limited thereto. For example, in the case of an electric heater, nichrome, titanium, iron, copper, or the like can be used, or the conductor is embedded or covered with an insulating material such as ceramic or quartz glass.

  The air heated by the air heating means 13 is vented to the air purification means 12 to heat the surface of the air purification means 12 to remove and remove the dirt, and is then discharged to the outside through the duct. The higher the temperature of the air to be removed by removing the dirt, the higher the effect. However, since there is a possibility of causing deterioration of the material, the temperature is preferably 40 ° C. or higher and 200 ° C. or lower, and preferably 60 ° C. or higher and 120 ° C. or lower. At this time, it is preferable that the air purification means 12 is made of metal since the material is hardly deteriorated by heat.

  The air heating means 13 may be used as warm air generating means for heating to warm the air in the bathroom. At this time, as shown in FIG. 1, the position of the air heating means 13 is preferably near the local outlet 14 for blowing out air toward the bathroom washroom. At this time, in order to circulate the warmed air to the air purification means 12, a heating circulation air passage 15 for communicating the upstream side of the air purification means 12 of the circulation air passage 11 and the downstream side of the air heating means 13 is provided. Provide. Further, when a heating circulation air passage opening adjusting means 16 and a local air outlet opening adjusting means 17 for adjusting the opening of the heating circulation air passage 15 and the local outlet 14 are provided, the opening is adjusted according to the operation mode. Thus, it is convenient because the air path can be switched as appropriate so that removal by heating and desorption and bathroom heating can be performed individually. In order to adjust the opening, it is preferable to use dampers and shutters. These can be controlled to an appropriate position by the amount of rotation of the motor for adjusting the opening of the dampers and shutters provided individually. preferable.

  FIG. 7 is a diagram showing the state of the opening adjusting means and the flow of air at each air passage and outlet.

  As shown in FIG. 7 (a), when air purification is performed during bathing, the heating circulation air passage opening degree adjusting means 16 and the local outlet opening degree adjusting means 17 are closed and not shown. However, the exhaust air passage 4 is also closed so that airflow is discharged from the circulation air outlet 9.

  If dirt accumulates by repeating this for several days, in order to remove the attached dirt of the air purifying means 12 by heat desorption and discharge it, as shown in FIG. The air that has been opened and the exhaust air passage 4 is opened and the dirt is re-released while circulating the heated air in the machine is discharged to the outside through the duct.

  Further, as shown in FIG. 7 (c), when heated air is used for bathroom heating or clothes drying, the local outlet opening adjusting means 17 is opened in a predetermined direction and the heating circulation air passage is opened. Control is performed so that the temperature adjusting means 16 and the circulating airflow control means 10 are closed and the warm air is blown out from the local outlet 14.

  As shown in FIG. 1, a temperature detection means 18 for detecting the temperature in the bathroom and a humidity detection means 19 for detecting the humidity can be provided in the vicinity of the inlet 8 of the main body. This function is intended to purify the air by collecting and removing the splash of steam and dirt generated in the bathroom, especially during bathing. Therefore, the temperature detection means 18 detects a sudden rise in temperature in the bathroom, and the humidity detection means 19 detects a shower action in the bathroom or generation of steam due to hot water, and automatically starts operation, so that bathing is possible. It is preferable because a large amount of fine dirt generated after the start can be prevented from adhering to the ceiling surface or the like. The temperature detecting means 18 is preferably one that can electrically detect the temperature, and uses, for example, a thermistor. The humidity detector 19 may be any device that can detect the relative humidity and the absolute water content in the air. For example, the polymer resistance type, the polymer capacity type, the aluminum oxide capacity type, the lithium chloride type, the Asman ventilation type. A moisture meter is known and is not limited to any one, but a polymer resistance type is preferred because of its high stability, detection of relative humidity, and low cost. In addition, in order to complement the detection information of the humidity detection means 19, it is also useful to install the temperature detection means 18 at a close position and use it in combination.

  In addition to these detection means, fine particle detection means 20 that can directly detect fine dirt particles may be provided. Of the fine particles, those that are adjusted to detect dirt floating in the bathroom are good. For example, optical lenses using a lens and a laser as a light source or an LED and a photodiode as a light receiving unit. Detection means can be used.

  Operation | movement of the bathroom ventilation apparatus 1 at the time of using these structures is demonstrated. The bathroom ventilator 1 of the present invention is operated during bathing in order to remove fine particulate organic substances generated during bathing, which is one of the causes of bathroom mold. As shown in FIG. 8, after starting bathing, the user himself / herself activates the activation means 21 of the bathroom ventilator 1, or the temperature detection means 18 and the humidity detection means 19 installed in the bathroom ventilator 1 are detected. After the start of bathing is detected by the means, the operation of the bathroom ventilator 1 is started. When the operation is started, first, the exhaust air passage 4 and the heating circulation air passage 15 are closed, and the blower 5 operates to suck air in the bathroom from the suction port 8, through the air purification means 12 and the circulation air passage 11. Then, air is blown out from the circulating air outlet 9 along the ceiling, and the air is circulated through the bathroom 23.

  As shown in FIG. 8, the bathroom ventilation device 1 is installed facing downward on the ceiling of the bathroom 23, and the human body during the shower or bathing water surface of the floor or bathtub by the rising air current of the steam. Fine particles scattered from the surface toward the ceiling are sucked from the suction port 8 together with air. The sucked fine particles pass through the air purification means 12 installed in the circulation air passage 11, and dirt components such as organic substances are collected by filtration and adsorption. At this time, steam is also collected by the air purification means 12 at the same time, but since it immediately evaporates by the air passing through the air purification means 12, the air purification means 12 is less likely to be blocked by condensed water. The air that has passed through the air purification means 12 is pressurized by the blower 5 and is sent downstream of the circulation air passage 11. The air purified by the air purifying means 12 is blown along the surface of the ceiling through the circulating air outlets 9. The fine particles scattered in the bathroom 23 are suppressed from adhering to the ceiling surface and fall again to the vicinity of the floor surface due to the circulation effect. Since the circulating air blown from the bathroom ventilator 1 has fine particles removed by the air purification means 12, the concentration of the fine particles contained in the air near the ceiling can be lowered, and the effect of suppressing the generation of mold Can be increased.

  After bathing, switch to ventilated operation to drain moisture in the bathroom. Switching is performed by operating means 22 such as a remote controller. When performing the ventilation operation, the air sucked from the suction port 8 is exhausted from the exhaust air passage 4 through the duct 3 to the outside.

  By discharging the circulating air from the circulating air outlet 9 along the ceiling, in addition to the flow of sucking the air in the bathroom 23 into the bathroom ventilator 1, it is possible to send the air to a portion where the air is difficult to spread. Become. Since the air purified by the air purification means 12 is distributed throughout the bathroom, it is possible to suppress odor residue and promote moisture drying. Furthermore, since it becomes possible to keep the inside of a bathroom dry, generation | occurrence | production of mold | fungi can also be suppressed.

  A regeneration process for regenerating the air purification means 12 of the bathroom ventilation apparatus 1 of the present embodiment by the dirt removing means will be described with reference to the flowchart of FIG. Each operation shown in the flowchart is executed by control from a microcomputer (not shown) based on a program stored in a memory (not shown) of a control unit (not shown). As the dirt removing means, an electric heater as the air heating means 13 is used.

  When the user of the bathroom ventilation device 1 determines that a large amount of dirt is collected in the air purification means 12, an air purification means regeneration button (not shown) is pressed (S0), and the dirt is removed by air heating and desorption. The regeneration process of the air purifying means 12 is started. The heating circulation air passage opening adjusting means 16 is opened (S1), the exhaust air passage 4 is opened (S2), and the circulation air outlet 9 is closed (S3), and then the blower 5 is operated (S4). Further, when the air heating means 13 is energized (S5), the heated air heated by the air heating means 13 passes through the heating circulation air passage 15 and reaches the air purification means 12. The air containing dirt re-released from the air purifying means 12 is discharged from the exhaust air passage 4 to the outside. After the air heating means 13 is energized, counting of energization time is started in the microcomputer (S6), and it is determined whether or not a predetermined time has elapsed (S7). If a time (for example, 5 minutes to 10 minutes) necessary for the air purifying means 12 to be sufficiently regenerated is set as the predetermined time, when it is determined that the predetermined time has passed (S7), the air The energization of the heating means 13 is stopped (S8), the blower 5 is stopped (S9), and the regeneration process of the air purification means 12 is completed.

  It should be noted that the start of the regeneration process of the air purification means 12 is not the press of the air purification means regeneration button (S0), but may be automatically started when the accumulated operation time of the bathroom ventilator 1 exceeds a certain time. The effect of can be obtained.

  Further, the determination of the completion of regeneration of the air purification means 12 is performed not only by counting the energization time (S6) and determination of the elapse of a predetermined time (S7), but also the amount of gas components generated from the air purification means 12 being regenerated. A similar effect can be obtained even if it is determined that the regeneration is completed when the gas component is detected by a gas sensor or the like and the gas component resulting from the desorption of the dirt component decreases.

  The bathroom ventilator according to the present invention is expected to be used as a bathroom ventilator in a high-humidity environment around a water such as a bathroom or a washroom, or is expected to be used as an indoor ventilator.

DESCRIPTION OF SYMBOLS 1 Bathroom ventilation apparatus 2 Frame 3 Duct 4 Exhaust air path 5 Blower 6 Electric motor 7 Ceiling panel 8 Suction port 9 Circulating air outlet 10 Airflow control means 11 Circulating air path 12 Air purifying means 12a Hot water collection and aeration filter 12b Dirt collection filter 12c Filter element wire 13 Air heating means 14 Local air outlet 15 Heating circulation air passage 16 Heating circulation air passage opening degree adjusting means 17 Local air outlet opening degree adjusting means 18 Temperature detecting means 19 Humidity detecting means 20 Fine particle detecting means 21 Starting means 22 Operating means 23 Bathroom 24 Opening

Claims (3)

A box-shaped frame installed on the ceiling surface of the bathroom and having an opening on the lower surface;
A blower disposed in the frame;
In a bathroom ventilator provided with a ceiling panel covering the opening,
A suction port for sucking room air into the ceiling panel and a circulation wind outlet for blowing air to circulate in the room;
A circulation air passage communicating the suction port and the circulation air outlet in the frame;
An air purification means for collecting dirt in the air in the circulation air passage,
A bathroom ventilator comprising dirt removing means for removing dirt adhering to the air purification means. The dirt removing means is a heater for heating air,
The bathroom ventilation apparatus according to claim 1, wherein dirt attached to the air purification means is removed by air heated by the heater. It has an exhaust air passage that exhausts air outside.
The bathroom ventilator according to claim 2, wherein air containing dirt removed from the air purification means by the dirt removing means is discharged from the exhaust air passage.