Toilet ventilation mechanism

Abstract

To provide an air ventilation structure capable of efficiently ventilating a toilet room without excessively raising a bad odor from a filth pool where filth is collected so that a user does not feel the bad odor of the filth in the filth pool, and keep the beauty and appearance inside and outside the room.SOLUTION: An air ventilation mechanism for a toilet comprises: an air inlet (11) for outdoor air provided only at a predetermined height within a range of an upper one-third part of a door (1) of a toilet room; an air outlet (21) for indoor air provided inside the toilet room at a position lower than an upper edge height (30F) of a filth pool (30) in a sink unit (3); and an air discharge device (2) which communicates with the air outlet (21) outside the toilet room. An obliquely downward air current is generated from the air intake (11) above the door (1) to the air outlet (21) at a lower part of the toilet room as the air discharge device (2) operates to discharge air, so that the toilet room is ventilated together with in-room air above the filth pool (30) of the sink unit (3).SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a ventilation mechanism for ventilating a toilet room (including toilets, bathrooms, and washrooms) in which a sink (toilet bowl, waste sink) is installed, and in particular to a ventilation mechanism that has a deodorizing or deodorizing function for odors caused by waste in the sink (toilet bowl, waste sink). [Background technology]

[0002] As a conventional door with a ventilation function for ventilating indoor air, for example, Patent Document 1 (Japanese Utility Model Application Laid-Open No. 61-085687) discloses a door with a ventilation-type vent section. According to this document, a first type of door (1) has a double, approximately rectangular vent section (3) at the bottom, a second type of door has a double, approximately rectangular vent section at the top and an arc-shaped vent section at the bottom, a third type of door has a roughly rectangular vent section at the top and an M-shaped vent section at the bottom, and a fourth type of door has vent sections (3) with louvered lattices that communicate with the front and back surfaces at two locations below the central panel.

[0003] Patent Document 2 (Patent No. 04570158) also discloses a door with a ventilation structure. According to this document, even when the gap between the top of the door frame and the top edge of the door installed inside the house is small, as in the case of the door with a ventilation structure disclosed in the second embodiment shown in Figure 6, the cutout 12 ensures sufficient ventilation. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Actual opening Showa 61-085687 [Patent Document 2] Tokuto-04570158 DISCLOSURE OF THE INVENTION [Problem to be solved by the invention]

[0005] However, the configurations of Patent Documents 1 and 2 have the following problems and are therefore not practical.

[0006] In other words, the configuration of Patent Document 1 above supplies fresh air into the room from the top and bottom, and therefore the indoor air is exhausted by a multi-layer airflow including an ascending airflow, which has the problem that users are likely to smell filth during ventilation.

[0007] Furthermore, the configuration of Patent Document 2 described above has a special door structure, which cannot be said to be efficient for ventilation in terms of maintenance and operation control, and it is difficult to maintain the beauty and appearance of the interior and exterior of the room.

[0008] Therefore, the present invention aims to provide a ventilation structure that efficiently ventilates the room in a toilet room equipped with a toilet bowl and a waste sink without excessively increasing the odor from the waste puddle where waste accumulates, making it difficult for users to sense the odor of the waste in the puddle, and that can maintain the beauty and appearance of the room and outside. [Means for solving the problem]

[0009] The ventilation structure for a toilet of the present invention has the following features: The numbers or letters in parentheses following the names of each component are symbols added for convenience to facilitate understanding by referring to the drawings shown as examples, and do not have any meaning or concept of their own.

[0010] [1] A third-class ventilation structure for a toilet room (toilet, bathroom, washroom) equipped with a sink (3) (a toilet bowl or a waste sink) with a waste basin (30), an outdoor air intake port (11) provided at a predetermined height within the upper third of the toilet door (1) (at least above the reference height of the nasal cavity of a standing user and below the top edge of the door); an indoor air exhaust port (21) provided in the toilet room at a position lower than the upper edge height (30F) of the waste basin (30) of the sink (3); and an exhaust device (2) outside the toilet room, the exhaust device (2) communicating with the exhaust port (21), As the exhaust device (2) operates to exhaust air, an indoor air current is generated obliquely downward from the air inlet (11) at the top of the door (1) to the exhaust outlet (21) at the bottom of the toilet room.

[0011] This indoor air flow draws in the indoor air above the waste basin (30) of the sink (3) for ventilation.

[0012] When the door is closed, the top of the door serves as the only air inlet (11) into the toilet room. Therefore, the outdoor air taken in through the air inlet (11) at the top of the door (1) forms a downward airflow that flows diagonally downward from above in the toilet room, drawing in indoor air containing odors emanating from the sewage basin (30) and exhausting it to the exhaust port (21) at the bottom. This allows the odor caused by the filth in the sewage basin (30) in the sink (3) to be exhausted to the outside without rising to a point where it can be detected by a user. This allows the indoor air to be efficiently ventilated while preventing users from sensing the odor of the filth.

[0013] In addition, by opening and closing the door equipped with a fresh air intake, the position and area of the air supply to the room can be changed without significantly changing the direction of the downward airflow, which allows for efficient ventilation without creating stagnant areas of indoor air.

[0014] [2] A ventilation structure for a toilet in which a sink (1) having a waste basin (30) is installed near the back wall of the room, an air intake port (11) provided at the top of the toilet room door (1) and always open to naturally supply air into the room; The toilet comprises an exhaust device (2) with an exhaust port (21) provided at the bottom of the toilet room. The door (1) is provided in front of or to the side of the sink (3) installed in the toilet room, The air intake (11) has a horizontally elongated rectangular opening shape of a predetermined height, and the centroid (center) of the opening shape is set to be at the center of the door width direction and at a predetermined height (110 HC) from the floor of the toilet room, The exhaust port (2) has a circular or rectangular opening shape with a predetermined diameter or a predetermined width, and the centroid (center) of the opening shape is set to be on the floor or wall on one side and / or rear of the sink (3), at a predetermined rear distance (210D) directly behind the inner surface of the door toward the rear wall, When viewed from the front or side of the toilet room, at least a part of a central airflow area (A20) formed by linearly connecting the lower and upper ends of the air intake port (11) at the specified height on the inner surface of the door (1) with the front and rear ends of the air exhaust port at the specified width is set so as to intersect with a part of the waste basin (30) of the sink (3).

[0015] [3] The air intake (11) is a long, horizontal opening with a predetermined representative width, with a horizontal lower edge and an upper edge parallel to the horizontal lower edge at equal intervals, and is characterized in that it is located in the center of the width of the door (1), with the predetermined representative width of the opening being at least one-third of the width of the toilet room when viewed from the wall on which the door (1) is installed.

[0016] [4] The air intake (11) is characterized by being formed by a combination of a cutout portion (11B, 11S) cut out into a polygonal cross section with a cutout surface (11B) parallel to the upper edge of the door and inclined surfaces (11S) at both ends of the cutout surface, and an upper frame 12T of the door.

[0017] [5] In any of the above-mentioned ventilation structures for toilets, the door is a hinged door that opens to the outside, and the exhaust device is controlled to operate while the door is open or closed.

[0018] [6] A ventilation structure for a toilet, characterized in that the exhaust device (2) is connected to the outside of the toilet room from the exhaust port and is composed of a shared fan connected to other rooms. [Effects of the Invention]

[0019] In the present invention, an oblique downward airflow is generated with the central airflow area as the main area to ventilate the indoor air, and the area of the filth puddle where the filth accumulates and this central airflow area intersect at least partially when viewed from the side or front of the room, thereby enabling efficient indoor ventilation without excessively increasing the odor of the filth in the filth puddle. [Brief explanation of the drawings]

[0020] [Figure 1] Front view of the door and door frame and perspective view of the toilet room [Figure 2] Front view of the ventilation structure inside the toilet [Figure 3] Enlarged view of the air intake inlet in Figure 1 [Figure 4] Side view of the ventilation structure inside the toilet [Figure 5] Enlarged view of part of Figure 4 [Figure 6] Plan view of the ventilation structure inside the toilet [Figure 7] An explanatory diagram of the ventilation structure inside the toilet room when it is open BEST MODE FOR CARRYING OUT THE INVENTION

[0021] Hereinafter, embodiments of the present invention will be described with reference to the drawings shown as Examples 1 to 7. The present invention is a ventilation mechanism for ventilating a toilet room (including a toilet, a bathroom, and a washroom) in which one or more toilet bowls or waste sinks are installed, A door (1) with an air intake, the upper part of which is the only air intake (11) in the toilet room; An exhaust device (2) that exhausts outside through an exhaust port (21) provided in the toilet room; The toilet is provided with a sink (3) having a waste basin (30) installed near one wall of the toilet room.

[0022] The door (1) is installed to the side or in front of the sink (3) installed in the toilet room, and the air intake (11) is installed at a specific height or at the top of the door (1) as an effective ventilation opening, with no other ventilation openings that are always open (except for gaps such as the area where the door meets the frame, which do not perform ventilation functions). The air intake is not connected to a fan or the like, and air is naturally drawn in.

[0023] On the other hand, the exhaust port (21) is provided on a wall surface (excluding the door contact surface) or floor surface below a predetermined height in the room, in an area excluding the front, side, or planar projection area of the sink, and is connected to a duct and a fan, which is an exhaust device, the end of which is connected to the exhaust. When the exhaust device is operating, a central ventilation area is formed in which outdoor air taken in through the door's air intake port flows toward the indoor exhaust port, and this central ventilation area generates an indoor air current flowing diagonally downward, thereby ventilating the air in the room.

[0024] The sink (3) comprises a flushable drain (including a toilet bowl) having a waste basin (30) for temporarily storing waste.

[0025] The definition or concept of each component, the necessary contents and meaning of each component, and the functions and actions of each component will be explained below.

[0026] (Toilet room) A toilet room is a semi-closed toilet room with one or more sinks installed in the room, that is, a room with a ventilation structure that has no exhaust equipment other than a natural ventilation intake and a mechanical exhaust outlet when the door is closed, and includes toilets, bathrooms, and washrooms. However, it does not refer to a strictly closed structure, and includes those that have a gap between the door and the door frame when closed in addition to the only air intake.

[0027] The toilet door (1) is a hinged door for indoor and outdoor access, and is located in front of or to the side of the sink installed in the toilet room. When the door is opened, a gap is created between the door and the door frame, and the door opening and closing action changes the indoor airflow. It is preferable that the exhaust device connected to the exhaust port starts or continues exhaust operation when this indoor airflow change occurs. For example, in addition to detecting the normal ventilation switch being turned on, the exhaust device can be controlled to start exhaust operation when it detects either the door being opened or closed or the lights being turned on in the room. Alternatively, the exhaust device can be controlled to start an exhaust operation stop timer when it detects the use of the sink, the use of a flush, or the light being turned off in the room. Taking advantage of the fact that the indoor airflow changes depending on the door opening and closing, the toilet room can be more efficiently ventilated by controlling the exhaust operation to occur when the door is opened or closed or around the time of opening and closing.

[0028] The sink (3) refers to a toilet or a sink in a wastewater system that has a waste basin (30) for waste disposal, and includes toilet bowls, waste sinks, and ostomate sinks. The waste basin is a container that temporarily collects discharged waste, and in the case of a flush toilet, the upper edge height (30F) of the waste basin is set at a predetermined horizontal line and is formed to expand into a predetermined planar shape. The horizontal line of the upper edge height (30F) of the waste basin refers to the predetermined height of the surface of the periphery of the waste basin that is closest to the horizontal. In the case of a flush toilet, the horizontal line of the upper edge height (30F) of the waste basin or its vicinity serves as a water basin for sealing and flushing. The air intake (11) is the only ventilation opening provided on the door for supplying air into the room, and naturally draws air from outside. The exhaust opening (21) is a ventilation opening for discharging indoor air, and is connected to a duct that leads to a fan, which is an exhaust device.

[0029] (Features of the air intake (11) and exhaust (21)) The air intake (11) is a horizontally elongated opening of a predetermined height, and is provided only at the center of the door width direction at a predetermined height (110Hc) from the toilet room floor. The air intake (11) is the only ventilation opening that naturally ventilates the toilet room with the outside when the door is closed, and is a horizontally elongated opening of a certain height, and is set so that the centroid of the opening shape on the inside of the door is the center of the door width direction and at a predetermined height from the toilet room floor. The representative width of the opening on the inside of the door (meaning the average width if there is a difference between the upper and lower positions) is set to be at least one-third of the room width.

[0030] (Position of air intake (11)) The height and number of outdoor air intakes (11) are set to a predetermined height within the upper third of the toilet door (1), more preferably within the upper quarter, and only one is provided on the toilet door. Note that the predetermined height here refers to the centroid of the shape of the intake, which is a ventilation opening. In the case of a rectangle, the centroid is the intersection of the diagonals, and the height of this centroid from the indoor floor is the predetermined height.

[0031] "Within the upper one-third of the door, and more preferably within one-quarter of the door height" means that the height of the center of the mouth shape is set within the range from the top edge of the door or from the top edge to a position one-third of the door height. The door is set based on the user's height plus an extra length, and if the height is within the upper one-third of the door, and more preferably within one-quarter of the door height, it is possible to more reliably set the central airflow area higher than the height of the user's nasal cavity that picks up odors, making it less likely that a standing user will sense the odor from the waste puddle.

[0032] The predetermined height of the air intake port can also be determined based on the height of the users of the toilet room. In this case, the reference height of the nasal cavity is determined by subtracting at least 10 centimeters from the average height of the users. For example, if the users are women, the reference height is set to 148 centimeters or more, which is 10 centimeters shorter than the average height, and if the users are all men, the reference height is set to 160 centimeters, which is 10 centimeters shorter than the average height.

[0033] Furthermore, by providing the air intake port (11) inside the door, the change in the indoor airflow when the door is opened or closed is promoted, making it difficult to sense any odor remaining in the room.

[0034] The exhaust port (21) has a circular or rectangular opening shape with a predetermined diameter or width, and is provided only at the rear of at least one side of the sink (3), at a floor position a predetermined distance (210Dv) behind the inner surface of the door and directly behind the rear wall. Specifically, the centroid of the opening shape of the exhaust port (21) is set to be on the floor or wall on one side and / or behind the sink, at a position a predetermined distance behind the inner surface of the door and directly behind the rear wall.

[0035] (Position of exhaust port (21)) The exhaust port (21) is located on the wall or floor of the room, excluding the door, at a position lower than the upper edge of the sink's waste basin, and in an area excluding the front, side, or planar projection of the sink. When the horizontal line of the upper edge of the waste basin (30F) is defined, the exhaust port (21) is located on the side or rear wall lower than this horizontal line, in an area excluding the side or front projection of the sink. For example, it is located within or on the surface of the cross-patterned area (A20) in the figure. Alternatively, it is located on the floor near the rear wall of the room, in an area excluding the planar projection of the sink. In addition, to generate a diagonally downward airflow in the room from the central ventilation area, it is preferable to install it at a rear position a predetermined horizontal distance from the inner surface of the door toward the back wall. The air intake and exhaust ports on the floor surface allow for efficient ventilation of the room without the odor of waste rising.

[0036] (Setting the central airflow area) The toilet features a central airflow area, which is formed by an air intake port provided at a predetermined height on the door and an exhaust port provided on a wall or floor below the toilet cesspool, and part of this central airflow area is set so that it intersects with part of the sink cesspool in either a side or front view. This airflow, which is generated mainly in the central airflow area, ventilates the room, effectively preventing the odor of waste from the cesspool from unnecessarily rising from the cesspool, and has a deodorizing or odor-preventing function in particular.

[0037] When viewed from the side of the toilet room, at least a part of a central airflow area (A20) formed by linearly connecting the lower and upper ends of the air intake port (11) at the specified height on the inner surface of the door (1) with the front and rear ends of the air exhaust port at the specified width is set to intersect with the rear distance of the waste collection section (30) of the sink (3).

[0038] (Central airflow area in side view) Here, the central airflow area (A20) of the present invention in a side view will be described.

[0039] The central airflow area (A20) is a rectangular spatial area conceptualized by connecting the upper and lower ends of the air intake port (11) at a predetermined height with the front and rear ends of the exhaust port (21) at a predetermined width, respectively, when the toilet compartment is viewed from the side. For example, it is an area partitioned by straight lines, as shown by dots in Figures 4 and 5. In a third-class ventilation structure in which outdoor air naturally drawn in through the air intake port (11) is forcibly ventilated to the outside through the exhaust port inside the toilet compartment, the side-view area formed by connecting the vertical height of the air intake port (11) and the front and rear width of the exhaust port (21) is conceptualized as the area of the direct exhaust line.

[0040] As shown in Figures 4 and 5, when viewed from the side of the toilet room, the height of the air supply port and the position of the exhaust port are set so that at least a part, preferably the entire central ventilation area intersects with the front and rear areas of the sink waste basin. In Figure 4, in particular, the entire front-to-rear width of the central ventilation area is located within the front and rear areas of the sink waste basin. This means that the room air above or in front of the sink waste basin is forcibly ventilated downwards in the room.

[0041] In a toilet room that is longer front to back than width, if the sink is installed closer to the back wall, the toilet user enters the room through the door on the front side of the sink and stands or sits above the sink's waste pit.The air is exhausted to the outside through a roughly rectangular central airflow area diagonally downward when viewed from the side, which runs from the only air intake port at the top of the door to the exhaust port, effectively preventing odors from rising upward from the waste pit.

[0042] (Central airflow area in plan view) In a plan view of the toilet room as shown in Figures 6 and 7, at least a part of a central airflow area (A20) formed by linearly connecting the left and right ends of a predetermined width of the air intake port (11) on the inner surface of the door (1) with the left and right ends of a predetermined width of the air exhaust port is set so as to intersect with a part of the width direction of the waste collection section (30) of the sink (3).

[0043] (Central airflow area in front view) When viewed from the front of the toilet room as shown in Figure 2, at least a part of a central airflow area (A20) formed by linearly connecting the left and right ends of a predetermined width of the air intake port (11) on the inner surface of the door (1) and the left and right ends of a predetermined width of the air exhaust port is set so as to intersect with a part of the width of the waste collection section (30) of the sink (3).

[0044] In addition, the air near the floor below the sink's waste collection area is close to the exhaust port, so it is efficiently exhausted to the outside by the exhaust airflow that flows from the front door toward the rear of the room in a plan view.

[0045] As shown in Figure 7, even when the door is open, the exhaust efficiency is particularly high from the central area (Z22) connecting the door opening width and the exhaust port opening width to the side area (Z3) on the exhaust port side. As a result, air near the floor is efficiently exhausted to the opposite side area (Z21), making it difficult for odors to travel upward beyond the waste accumulation area.

[0046] This takes advantage of the fact that indole, the main component of the smell of human feces, is about four times heavier than air, and the smell of feces accumulates near the floor.It also allows for efficient ventilation that maintains appearance while preventing the smell of filth from becoming too strong.

[0047] The positions and heights of the air intake and exhaust ports in the room, as well as the shape and size of each port, are set so that the horizontal area of the filth puddle and the central airflow area partially intersect when viewed from the side or front of the room. This allows for efficient ventilation of the room without excessively increasing the odor of the filth in the filth puddle.

[0048] (Air intake shape) The air intake (11) is a long, horizontally elongated polygonal shape with two parallel sides, the upper and lower sides of which extend horizontally at equal distances, and the width of the opening is variable between the upper and lower sides. The lower side in the horizontal direction and the upper side parallel to this side are equally spaced apart, and the air intake (11) is provided only at the center of the upper part of the door (1).

[0049] More preferably, the shape is a polygon with the top edge longer than the bottom edge, particularly a horizontally elongated inverted trapezoid or a shape similar to this. By using a trapezoidal indoor opening with a predetermined height, such as the air intake vent (11) in the embodiment, and making the top edge longer than the bottom edge, a slight difference in intake air flow velocity occurs between the high and low parts of the air intake vent. This allows for efficient ventilation of the air in the toilet room.

[0050] More specifically, the air intake is installed above the door to create a difference in the air intake speed between the top and bottom. Meanwhile, the exhaust is installed near the back wall of the toilet room, so that, when viewed from the side, the air above and in front of the sink's waste collection area is exhausted more efficiently than the air further above and behind. This difference in intake air speed within the room prevents unnecessary air accumulation (dead zones), allowing the toilet room to be efficiently exhausted.

[0051] The width of the air intake opening shape is a predetermined representative width on the inner surface of the door (if it varies slightly at the upper and lower corners or is different at the top and bottom, the average width is used as the representative width), and is located in the center of the door's width direction, with the predetermined representative width of the opening being at least one-third of the width of the toilet room as seen from the wall on which the door is installed.

[0052] In addition, the air intake port (11) of the embodiment is configured by combining a cutout portion (11B, 11S) cut out in a multi-faceted shape including a cutout surface (11B) parallel to the upper edge of the door and an upper frame (12T) of the door facing the vicinity of the cutout surface, so that the combination can be separated when the door is opened or closed.

[0053] By forming the air intake port by combining the cutout portion and the upper frame of the door, it is possible to secure the intake air flow rate through a relatively large single air intake port, while making the toilet door look good and have excellent visibility blocking properties.

[0054] The cutout surface is a horizontal surface, and both ends of the cutout surface are formed by flat or curved inclined surfaces (11S). The inclined surfaces (11S) at both ends are inclined outwardly upward at a predetermined inclination angle 11θ relative to the horizontal so that the width of the air intake port (11) decreases from top to bottom. The inclination angle of the inclined surfaces relative to the horizontal is set to at least between 30 and 60 degrees, preferably between 30 and 45 degrees, thereby ensuring an asymmetric airflow state in the vertical direction due to changes in the opening width.

[0055] The air intake vent in this example has an inclined surface that opens upward at the top edge of the door, with a predetermined width notch cut at an approximately 45-degree angle on both ends to widen the width upward, combined with the upper door frame opposite it, and is separated into upper and lower parts as the door opens and closes. In particular, when the door is a hinged door, the opening width near the top edge of the air intake vent expands as the door opens and closes, separating it from the upper frame, changing the indoor airflow or creating turbulence in the room when the door is opened and closed. This allows for more efficient ventilation of the air in the toilet room.

[0056] The inclined surfaces (11S) at both ends of the cutout surface are characterized by being made up of straight or curved sides inclined obliquely upward and outward at an angle within the range of 30 to 60 degrees relative to the horizontal.

[0057] This ventilation structure for a toilet room in a house that has a toilet room and other living rooms is characterized in that the exhaust device (2) is composed of a shared fan that is duct-connected to the toilet room's exhaust port and also to each of the exhaust ports of one or more other living rooms. In other words, the exhaust device (2) composed of a shared fan serves not only as a ventilation structure for the toilet room but also as a ventilation system for the entire house, serving as a ventilation system for one or more other living rooms. The shared fan is connected in parallel to each of the exhaust ports provided in the toilet and each living room of the house, and mechanically exhausts the indoor air from the toilet room and each living room. The operation of the exhaust device, which is a shared fan, is controlled not only by detecting whether the toilet room is in use (for example, whether the lights are on or off), but also by detecting whether other rooms are in use (for example, whether the lights are on or off).

[0058] By generating a central airflow for forced exhaust with the oblique downward airflow as the central airflow region in the room, the room is efficiently ventilated without causing the odor in the room air above the filth pile to rise unnecessarily.

[0059] Example 1 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0060] The toilet room of the embodiment shown in Figs. 1 to 7 is an explanatory diagram of the ventilation structure of a toilet room in which one toilet bowl, which is a sink, is installed.

[0061] This toilet room does not have any natural ventilation openings for outside air other than the air intake opening on the door, and is exhausted by natural air intake from the air intake opening and mechanical exhaust from the exhaust opening of the exhaust device (2), so when viewed as a single toilet room, it has a ventilation structure of type 3 ventilation. However, even if the entire house is equipped with a mechanical air intake system that leads to the interior of the house, it will still be considered as type 3 ventilation when viewed as a single toilet room. The ventilation structure of type 3 ventilation does not exclude type 1 ventilation equipment for the entire house.

[0062] The basic structure of the toilet room is as follows: A door (1) having the only air intake (11) in the toilet room at the top end of the door; An exhaust device (2) that exhausts outside through an exhaust port (21) provided in the toilet room; The toilet is provided with a sink (3) having a waste basin (30) installed near the back wall of the toilet room.

[0063] The toilet room of the embodiment has a planar interior shape that is relatively longer in the depth direction than in the width direction, and a hinged door (1) is provided at the front of the room, and a sink (3) is installed near the back wall of the room. In other words, the door (1) is provided directly in front of the sink (3).

[0064] The air intake (11) is a horizontally elongated opening of a predetermined fixed height provided at the top end of the door between the door's upper frame, and is provided at the center of the door's width at a predetermined height (110Hc) from the floor of the toilet room, with a predetermined average opening width.

[0065] The exhaust port (2) has a circular or rectangular mouth shape of a predetermined width and is provided only at a floor position at the rear of at least one side of the sink (3), a predetermined rear distance (210D) away from the inner surface of the door directly behind the rear wall.

[0066] As shown in Figures 4 and 5, in a side view of the toilet room, at least a part of a central airflow area (A20) formed by linearly connecting the lower and upper ends of the air intake port (11) at the predetermined height on the inner surface of the door (1) and the front and rear ends of the air exhaust port at the predetermined width is set so as to intersect with a horizontal imaginary line (horizontal line 30F) of the waste basin (30) of the sink (3).

[0067] The embodiment is further characterized by the fact that the room can be efficiently ventilated without the odor of waste rising by means of an air intake port having a horizontally long inverted trapezoidal opening that is asymmetrical from top to bottom, located on the front door of the room, and an exhaust port having a point-symmetric opening on the floor, located near the rear of the room.

[0068] However, during the door opening operation and when the door is open, the position of the air intake changes, the entrance opening functions as an air intake for ventilation, and the position of the fresh air intake is changed without significantly changing the direction of the downward airflow, which is mainly in the central airflow area of the room, thereby efficiently ventilating the indoor air.

[0069] In this embodiment, both ends of the cutout surface are symmetrically formed with inclined surfaces (11S) having a predetermined relative horizontal inclination angle 11SA so that the width of the air intake port (11) decreases from top to bottom.

[0070] The inclined surfaces at both ends of the cutout surface preferably comprise straight or curved sides inclined at an angle of at least 30 degrees to 60 degrees.

[0071] The horizontal or inclined surface that constitutes the cutout surface is not limited to a flat surface, and may be a curved surface that is at least partially curved along the thickness direction of the door.

[0072] The door is a swing door, and when it is opened and closed while the exhaust system is in operation, turbulence is generated in the room as the door opens and closes, and the change in the ventilation airflow in the room allows for efficient ventilation.

[0073] By exhausting air to the outside through an exhaust port provided on the floor or wall near the rear side of the toilet, ventilation can be performed efficiently without being affected by objects installed inside the room.

[0074] In this example, the toilet does not have an independent pipe fan, but is connected to the ventilation system for the entire house, which uses a sirocco fan, to exhaust the air. This avoids the situation where the static pressure (power) of the pipe fan is weak, even if the pipe fan is turned on under negative pressure, which is easy to occur in airtight houses.

[0075] If a centrifugal fan with relatively strong static pressure is used as the shared fan mentioned above, ventilation can be carried out as planned without succumbing to negative pressure.

[0076] The ventilation volume of the toilet room is, for example, 30 to 40 m 3 / h, or 7.5 to 10 times / h. By design, the ventilation volume is set so that the air in the toilet is replaced every 6 to 8 minutes, and the exhaust device is controlled to operate continuously so that ventilation continues even when the door is open or closed.

[0077] By combining air intake from the top of the room through the door with air exhaust from the bottom at a position lower than the waste puddle, it is difficult for bad odors to pass in front of the nose, making them less noticeable. This ventilation structure makes good use of the fact that indole, the main component of the smell of human feces, is about four times heavier than air and tends to accumulate near the floor. Furthermore, ammonia, the main component of the smell of urine, is lighter than air, but by ventilating the air above with entrainment flow, the odor is not noticeable.

[0078] Furthermore, by varying the width of the intake port (i.e., the length of the cutout) depending on the top and bottom of the opening shape, the flow rate in the center of the room is slightly higher than at the edges of the room. This creates a difference in the flow speed of the ventilation airflow between the top and bottom, and the exhaust efficiency is higher in the area of the room facing the filth pit than in the area above the central ventilation airflow in the diagonally downward direction.

[0079] The embodiments of the present invention are not limited to the configurations, shapes, and dimensions described above, and various modifications, extraction of partial elements, separation configurations, or combinations are possible. [Explanation of symbols]

[0080] 1 door (swing door) 11 Air supply port 110HC Air Inlet Installation Height 11B 11S Notched surface, inclined surface 12T Door upper frame 2. Exhaust system 21 Exhaust port 210D Rear distance of exhaust outlet 30 Cess Pit 30F Height of upper edge of waste basin 31F Height of waste pit 3. Sink (toilet or waste sink) EH Nasal cavity reference height for standing users RS room floor RW1,RW2,RW3 Room wall RC ceiling

Claims

1. A ventilation structure for a toilet room equipped with a sink with a waste basin, An outdoor air intake port for the toilet room, which is formed by combining a notch provided within the central third of the upper part of the toilet room door and an upper frame of the door; An exhaust port for indoor air of the toilet room, which is provided on the floor surface at a rear position in the toilet room and on one side of the sink at a rear position; an exhaust device outside the toilet room that is in communication with the exhaust port, The air intake is a ventilation opening that has no partition and allows natural ventilation to the outside of the toilet room when the door is closed, and is a single opening with a horizontal, elongated shape and a predetermined representative width that is provided in the center of the door width direction; When the exhaust system is operating, an indoor airflow is generated by a central airflow area that runs diagonally downward from the air intake port at the top center of the door to the exhaust port on the floor below the toilet room. This ventilation structure for a toilet room is characterized in that the indoor air above the waste pit of the sink is drawn in and ventilated by this indoor air flow, and the odors that accumulate near the floor of the toilet room on the sides around the sink are ventilated by the lower exhaust.

2. A ventilation structure for a toilet in which a sink with a waste basin is installed near the back wall of the room, An air intake vent that is always open and provides natural air intake into the toilet room, and an exhaust device with an exhaust port, the exhaust port being provided on the floor surface at the bottom of the toilet room; The door is provided in front of or to the side of the sink installed in the toilet room, The air intake is a horizontally elongated rectangle of a constant height with its upper and lower sides parallel, and the predetermined representative width of the opening shape is set to one-third or more of the width of the toilet room when viewed from the wall on which the door is installed, and the width of the horizontally elongated rectangle decreases from top to bottom, and the centroid of the opening shape on the inner surface of the door is set to be the center of the door width direction and at a predetermined height from the floor of the toilet room, The exhaust port has a circular or rectangular opening shape with a predetermined diameter or a predetermined width, and the centroid of the opening shape is set to be on the floor or wall on one side and / or rear of the sink, and at a predetermined rear distance directly behind the inner surface of the door to the rear wall, The ventilation structure for a toilet room as described in claim 1, characterized in that when a central airflow area is virtually defined by linearly connecting the lower and upper ends of the air intake port opening shape on the inner surface of the door and the front and rear ends of the specified diameter or specified width of the exhaust port when viewed from the front or side of the toilet room, at least a portion of this central airflow area intersects with a portion of the sink's waste basin when viewed from the front or side.

3. The air intake has a horizontally long, horizontal opening shape with a predetermined representative width, and has a horizontal lower side formed by a notch in the center of the upper side of the door, and an upper side parallel to the horizontal lower side formed by the upper frame of the door, and is provided in the center of the width direction of the door with a predetermined representative width of the opening shape of the air intake that is one-third or more of the width of the toilet room as seen from the wall on which the door is installed, In addition, the door is a swing door, and the position of the air intake changes with the opening of the door, and the entrance opening functions as an air intake for ventilation, The ventilation structure for a toilet room as described in claim 1, characterized in that the exhaust device is controlled to continue operating so that ventilation continues while the door is open and closed, so that the swing door is opened and closed while the exhaust device is operating, and indoor turbulence is generated by opening and closing the swing door.

4. The ventilation structure for a toilet room as described in claim 3, characterized in that the air intake is formed by a cutout portion cut out in a polygonal cross section with a cutout surface parallel to the upper edge of the door and inclined surfaces at both ends thereof, combined with the upper frame of the door, and has an indoor opening shape of a trapezoid with an upper side longer than the lower side.

5. 5. The ventilation structure for a toilet room according to claim 4, wherein the door is a hinged door, and the exhaust device is controlled to be in operation while the door is open or closed.

6. 2. The ventilation structure for a toilet according to claim 1, wherein the exhaust device is connected to the outside of the toilet from an exhaust port and is composed of a shared fan connected to other rooms.

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