Smoking room ventilation system

Abstract

To provide a technology which is capable of maintaining an air flow flown into a smoking room from an adjacent space through an entrance / exit when a door is opened at a prescribed wind speed or more and securing air supply into the smoking room when the door is closed while being excellent in design and adopting a simple and rational structure in a smoking room ventilation system which is divided from an adjacent space, installed in the smoking room provided with doors at the entrance / exit to / from the adjacent space, and is provided with compulsory exhaustion means forcibly exhausting the air in the smoking room outside.SOLUTION: A smoking room ventilation system includes: a path duct 20 communicating an adjacent space 1 with a smoking room 2; and path duct interlock opening / closing means X which interlocks with opening / closing operation of a door 5 and opens / closes the path duct 20 in the mode that opens the path duct 20 when the door 5 is closed and closes the path duct 20 when the door 5 is opened.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a smoking room ventilation system which is installed in a smoking room which is partitioned off from an adjacent space and has a door at the entrance / exit to the adjacent space, and which is equipped with a forced exhaust means for forcibly discharging air from the smoking room to the outside. [Background technology]

[0002] The Ministerial Ordinance amending part of the Enforcement Regulations of the Health Promotion Law stipulates that, as technical standards for preventing the escape of tobacco smoke from a smoking room, the smoking room must be separated from the adjacent space (outdoors), and that the airflow flowing into the smoking room from the adjacent space through the entrance must be at least a specified wind speed of, for example, 0.2 m per second. A smoking room ventilation system that conforms to such technical standards has been proposed (see, for example, Patent Document 1). That is, the smoking room ventilation system described in Patent Document 1 is installed in a smoking room that is partitioned off from an adjacent space and has a door at the entrance to the adjacent space, and is equipped with forced exhaust means (exhaust fan 56) that forcibly exhausts the air in the smoking room to the outside. In this smoking room ventilation system, when the forced exhaust means forcibly exhausts the air in the smoking room to the outside and the door switch detects that the door has been opened, the supply of outside air to the smoking room is stopped and the supply of outside air to the adjacent space is increased. Then, the outside air introduced into the adjacent space flows into the smoking room through the entrance, and the airflow flowing from the adjacent space into the smoking room through the entrance reaches a specified wind speed or higher. In addition, the smoking room ventilation system described in Patent Document 1 has an opening in the wall separating the adjacent space from the smoking room, which allows the two spaces to communicate with each other. When the door is closed, the difference in the intake and exhaust rates between the adjacent space and the smoking room ensures that air can be supplied from the adjacent space through the opening to the smoking room. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2017-089968 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the smoking room ventilation system described in Patent Document 1, air continues to be supplied from the adjacent space to the smoking room through the opening even when the door is open, and this supply of air through the opening causes a decrease in the airflow generated at the entrance. Therefore, if a sufficient amount of outside air is introduced into the adjacent space in order to maintain the airflow generated at the entrance at or above a specified wind speed, there is a problem that the device configuration becomes complicated, and if the opening is made small, there is a problem that the air supply to the smoking room when the door is closed is insufficient. In addition, in order to prevent air from entering the smoking room from adjacent spaces through any means other than the entrance when the door is open, it is possible to provide the above-mentioned opening as a louver in the door. However, providing a louver in the door causes problems such as a deterioration in the design and leakage of sounds from conversations. In view of this situation, the main object of the present invention is to provide a technology in a smoking room ventilation system which is installed in a smoking room which is partitioned off from an adjacent space and has a door at the entrance / exit to the adjacent space, and which is equipped with a forced exhaust means which forcibly exhausts the air in the smoking room to the outside, and which employs a design-friendly, simple and rational configuration, capable of maintaining the airflow flowing into the smoking room from the adjacent space through the entrance / exit at or above a specified wind speed when the door is open, and which can ensure the supply of air to the smoking room when the door is closed. [Means for solving the problem]

[0005] The first characteristic configuration of the present invention is installed in a smoking room that is partitioned off from an adjacent space and has a door at the entrance to the adjacent space, A smoking room ventilation system comprising a forced exhaust means for forcibly exhausting air in the smoking room to the outside, A path duct that communicates the adjacent space with the smoking room; The path duct is opened when the door is closed and closed when the door is opened, and a path duct linked opening / closing means is provided for opening and closing the path duct in conjunction with the opening and closing operation of the door.

[0006] According to this configuration, when the door is closed, the path duct that communicates the adjacent space with the smoking room is opened by the path duct interlocking opening / closing means, so that the supply of air from the adjacent space to the smoking room can be ensured through the path duct without providing a louver that would cause poor design and sound leakage on the door as in the conventional technology. On the other hand, when the door is open, the path duct that communicates the adjacent space with the smoking room is closed, so that all air flows into the smoking room from the adjacent space through the entrance / exit. Therefore, the airflow flowing into the smoking room from the adjacent space through the entrance / exit can be easily maintained at or above the specified wind speed without adopting a complicated configuration that stops the supply of outside air to the smoking room and increases the supply of outside air to the adjacent space. Therefore, according to the present invention, in a smoking room ventilation system which is installed in a smoking room which is partitioned off from an adjacent space and has a door at the entrance / exit to the adjacent space, and which is equipped with a forced exhaust means which forcibly exhausts the air in the smoking room to the outside, it is possible to provide a technology which employs a design-friendly, simple and rational configuration, while maintaining the airflow flowing into the smoking room at the entrance / exit to the adjacent space at or above a specified wind speed when the door is open, and which ensures the supply of air to the smoking room when the door is closed.

[0007] A second characteristic feature of the present invention is that the path duct interlocking opening and closing means includes a differential pressure damper that opens and closes the path duct in response to a pressure difference between the adjacent space side and the smoking room side in the path duct.

[0008] According to this configuration, when the door is closed, the supply of air to the smoking room through the entrance is stopped, and the forced exhaust by the forced exhaust means reduces the pressure in the smoking room and increases the pressure difference with the adjacent space. When the pressure difference between the adjacent space side and the smoking room side in the path duct reaches a predetermined set value or more, the differential pressure damper automatically transitions to an open state to open the path duct, thereby ensuring the supply of air from the adjacent space to the smoking room through the path duct. On the other hand, when the door is open, air is supplied to the smoking room through the entrance, and the pressure in the smoking room rises and the pressure difference with the adjacent space decreases. When the pressure difference between the adjacent space side and the smoking room side in the path duct falls below the set value, the differential pressure damper automatically transitions to a closed state to close the path duct, thereby easily maintaining the airflow flowing from the adjacent space to the smoking room through the entrance at a specified wind speed or more. Furthermore, by adopting the differential pressure damper as the path duct linked opening and closing means, it is possible to open and close the path duct using the pressure difference between the adjacent space and the smoking room as a power source in response to the opening and closing of the door, eliminating the need for a sensor to detect the opening and closing of the door or a motor to drive the damper that opens and closes the path duct.

[0009] A third characteristic configuration of the present invention is a door opening / closing detection means for detecting an opening / closing state of the door; a motor damper which opens and closes the path duct in response to the open / closed state of the door detected by the door open / close detection means, as the path duct interlocking opening / closing means.

[0010] According to this configuration, when the door opening / closing detection means detects that the door is closed, the motor damper is shifted to an open state to open the path duct, thereby ensuring the supply of air from the adjacent space to the smoking room through the path duct. On the other hand, when the door opening / closing detection means detects that the door is open, the motor damper is shifted to a closed state to close the path duct, thereby easily maintaining the airflow flowing from the adjacent space through the doorway into the smoking room at or above a specified wind speed. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1 is a diagram showing a schematic configuration of a smoking room ventilation system according to a first embodiment and a state in which a door is closed; [Diagram 2] FIG. 1 is a diagram showing a schematic configuration of a smoking room ventilation system according to a first embodiment and a state in which a door is open. [Diagram 3] FIG. 13 is a diagram showing a schematic configuration of a smoking room ventilation system of a second embodiment and a state in which the door is closed. [Figure 4] FIG. 13 is a diagram showing a schematic configuration of a smoking room ventilation system of a second embodiment and a state in which the door is open. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] [First embodiment] A first embodiment of the present invention will be described with reference to the drawings. The configuration of a smoking room ventilation system of this embodiment (hereinafter referred to as "the first ventilation system") is shown in Figs. 1 and 2. This first ventilation system is a system for ventilating a smoking room 2. The smoking room 2 is generally partitioned off from an adjacent space 1 such as a corridor or an anteroom, and a door 5 is provided at an entrance 4 to the adjacent space 1. This first ventilation system is provided with an exhaust fan 10 in an exhaust duct 11 that connects an exhaust port 12 opening into the smoking room 2 to the outdoors, as a forced exhaust means for forcibly discharging air from the smoking room 2 to the outside. That is, by operating the exhaust fan 10, air from the smoking room 2 is taken into the exhaust duct 11 from the exhaust port 12, and is discharged to the outdoors through the exhaust duct 11.

[0013] In order to ventilate such a smoking room 2, as shown in FIG. 2, when the door 5 is opened, the airflow F flowing from the adjacent space 1 into the smoking room 2 through the entrance / exit 4 is required to have a specified wind speed of, for example, 0.2 m per second or more. This first ventilation system employs a simple and rational configuration with excellent design, which maintains the airflow F flowing from the adjacent space 1 into the smoking room 2 through the entrance / exit 4 at or above a specified wind speed when the door 5 is open (see Figure 2), and which ensures the supply of air to the smoking room 2 when the door 5 is closed (see Figure 1), the details of which are described below.

[0014] A path duct 20 which connects an adjacent space side opening 21 opening, for example, in the ceiling part of the adjacent space 1, and a smoking room side opening 22 opening, for example, in the ceiling part of the smoking room 2, and communicates the adjacent space 1 and the smoking room 2, is provided, for example, in the ceiling space above the partition wall between the adjacent space 1 and the smoking room 2. Note that in order to set up a fire compartment between the adjacent space 1 and the smoking room 2, a fire damper (not shown) which closes in the event of a fire can be appropriately installed in the path duct 20. Furthermore, the path duct 20 is provided with a differential pressure damper 31 which opens and closes the path duct 20 in response to the differential pressure between the adjacent space 1 side and the smoking room 2 side. This differential pressure damper 31 is configured to close when the differential pressure between the adjacent space 1 side and the smoking room 2 side is less than a predetermined set value, and to open when the pressure on the smoking room 2 side drops and the differential pressure with the adjacent space 1 side becomes equal to or greater than the set value. Note that as this type of differential pressure damper 31, a differential pressure damper or positive pressure damper which is generally used to maintain a positive pressure in the room can be used, and is selected based on the required air volume when opened and the set value of the differential pressure when transitioning from a closed state to an open state.

[0015] That is, when the door 5 is closed (see FIG. 1), the supply of air to the smoking room 2 through the entrance 4 is stopped by the closed door 5, so that the pressure in the smoking room 2 drops due to the forced exhaust by the exhaust fan 10, and the pressure difference with the adjacent space 1 increases. Then, when the pressure difference between the adjacent space 1 side and the smoking room 2 side in the pass duct 20 reaches or exceeds a predetermined set value, the differential pressure damper 31 automatically transitions to an open state, and the pass duct 20 is opened. Then, the supply of air from the adjacent space 1 to the smoking room 2 is secured through the pass duct 20. The aperture of the pass duct 20 and the specifications of the differential pressure damper 31 are selected based on the volume of airflow F generated at the entrance 4 when the door 5 is open (see FIG. 2).

[0016] On the other hand, when the door 5 is open (see FIG. 2), an airflow F is generated from the adjacent space 1 toward the smoking room 2 at the open entrance 4, causing the pressure in the smoking room 2 to rise and reducing the pressure difference with the pressure in the adjacent space 1. When the pressure difference between the adjacent space 1 side and the smoking room 2 side in the path duct 20 falls below the set value, the differential pressure damper 31 automatically transitions to the closed state and the path duct 20 is closed. Then, all air flowing from the adjacent space 1 to the smoking room 2 passes through the entrance 4, so that the airflow F flowing from the adjacent space 1 into the smoking room 2 through the entrance 4 is maintained at or above the specified wind speed.

[0017] In short, the above-mentioned differential pressure damper 31 functions as a pass duct interlocking opening / closing means X for opening and closing the pass duct 20 in conjunction with the opening and closing operation of the door 5, in a form in which the pass duct 20 is opened when the door 5 is closed (see FIG. 1) and closed when the door 5 is opened (see FIG. 2). By providing such a pass duct interlocking opening / closing means X, it is possible to ensure the supply of air from the adjacent space 1 to the smoking room 2 through the pass duct 20 when the door 5 is closed (see FIG. 1), while easily maintaining the airflow F flowing from the adjacent space 1 to the smoking room 2 through the entrance / exit 4 at a specified wind speed or higher when the door 5 is open (see FIG. 2), without providing a louver in the door 5 that would deteriorate the design and cause sound leakage.

[0018] Second Embodiment A second embodiment of the present invention will be described with reference to the drawings. Note that the same reference numerals are used for the same components as those in the above-mentioned embodiment, and the description thereof may be omitted. The configuration of the smoking room ventilation system of this embodiment (hereinafter referred to as "the second ventilation system") is shown in Figs. 3 and 4. Like the above-mentioned first ventilation system (FIGS. 1 and 2), the second ventilation system is provided with an exhaust fan 10 as forced exhaust means for forcibly discharging air from the smoking room 2 to the outside. This second ventilation system employs a simple and rational configuration with excellent design, which maintains the airflow F flowing from the adjacent space 1 through the entrance / exit 4 into the smoking room 2 at or above a specified wind speed when the door 5 is open (see Figure 4), and which ensures the supply of air to the smoking room 2 when the door 5 is closed (see Figure 3), the details of which are described below.

[0019] A path duct 20 which connects an adjacent space side opening 21 which opens, for example, into the ceiling portion of the adjacent space 1 and a smoking room side opening 22 which opens, for example, into the ceiling portion of the smoking room 2, and communicates the adjacent space 1 and the smoking room 2, is provided, for example, in the ceiling space above the partition wall between the adjacent space 1 and the smoking room 2. Further, a door open / close detection means 37 such as a magnet sensor for detecting whether the door 5 is open or closed is provided. Further, the path duct 20 is provided with a motor damper 34 that opens and closes the path duct 20 in response to the open / closed state of the door 5 detected by a door open / close detection means 37. This motor damper 34 is configured to be opened when the door 5 is closed (see FIG. 3) and closed when the door 5 is open (see FIG. 4).

[0020] That is, when the door 5 is closed (see FIG. 3), the door open / close detection means 37 detects that the door 5 is closed, and the motor damper 34 automatically transitions to an open state, opening the pass duct 20. This ensures that air is supplied from the adjacent space 1 to the smoking room 2 through the pass duct 20. The aperture of the pass duct 20 and the specifications of the motor damper 34 are selected based on the volume of airflow F generated at the entrance / exit 4 when the door 5 is open (see FIG. 4).

[0021] On the other hand, when the door 5 is open (see FIG. 4), the door open / close detection means 37 detects that the door 5 is open, and the motor damper 34 automatically transitions to a closed state to close the path duct 20. Then, all air flowing from the adjacent space 1 to the smoking room 2 passes through the entrance / exit 4, so that the airflow F flowing from the adjacent space 1 to the smoking room 2 through the entrance / exit 4 is maintained at or above the specified wind speed.

[0022] In short, the door opening / closing detection means 37 and the motor damper 34 function as a path duct interlocking opening / closing means X for opening and closing the path duct 20 in conjunction with the opening and closing of the door 5, in a form in which the path duct 20 is opened when the door 5 is closed (see FIG. 3) and closed when the door 5 is opened (see FIG. 4). By providing such a path duct interlocking opening / closing means X, it is possible to ensure the supply of air from the adjacent space 1 to the smoking room 2 through the path duct 20 when the door 5 is closed (see FIG. 3), while easily maintaining the airflow F flowing from the adjacent space 1 to the smoking room 2 through the entrance / exit 4 at a prescribed wind speed or higher when the door 5 is open (see FIG. 4), without providing a louver in the door 5 that would deteriorate the design and cause sound leakage.

[0023] [Another embodiment] Other embodiments of the present invention will be described below. Note that the configurations of the embodiments described below are not limited to being applied alone, but may also be applied in combination with the configurations of other embodiments.

[0024] (1) In the above embodiment, the path duct 20 is provided in the ceiling space above the partition wall between the adjacent space 1 and the smoking room 2, but the installation location of the path duct 20 may be appropriately changed, such as by providing it in the partition wall or in the underfloor space below the partition wall.

[0025] (2) In the first embodiment (see FIGS. 1 and 2), the differential pressure damper 31 is provided as the path duct interlocking opening / closing means X, and in the second embodiment, the door opening / closing detection means 37 and the motor damper 34 are provided as the path duct interlocking opening / closing means X. However, the path duct interlocking opening / closing means X may be any means that opens and closes the path duct 20 in conjunction with the opening and closing operation of the door 5, and the configuration thereof may be changed as appropriate. [Explanation of symbols]

[0026] 1 Adjacent Space 2 Smoking Room 4 Entrance / exit 5 Doors 10 Exhaust fan (forced exhaust means) 20 Pass Duct 31 Differential pressure damper 34 Motor damper 37 Door opening / closing detection means F Airflow X-path duct interlocking opening and closing means

Claims

1. It is installed in a smoking room that is partitioned off from an adjacent space and has a door at the entrance to the adjacent space, A smoking room ventilation system comprising a forced exhaust means for forcibly exhausting air in the smoking room to the outside, A path duct that communicates the adjacent space with the smoking room; The smoking room ventilation system is provided with a path duct interlocking opening / closing means for opening and closing the path duct in conjunction with the opening and closing operation of the door, in a form in which the path duct is opened when the door is closed and closed when the door is opened.

2. 2. A smoking room ventilation system according to claim 1, further comprising a differential pressure damper as said path duct interlocking opening and closing means for opening and closing said path duct in accordance with a pressure difference between said adjacent space side and said smoking room side in said path duct.

3. A door opening / closing detection means for detecting an opening / closing state of the door; 2. A smoking room ventilation system according to claim 1, further comprising a motor damper as said path duct interlocking opening / closing means for opening and closing said path duct in accordance with the open / closed state of said door detected by said door open / close detection means.

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