JP5149632B2 - Smoke system - Google Patents

Description

  The present invention guides contaminated air typified by tobacco smoke from the near end to the far end along the table, for example, non-smokers adjacent to smokers are less susceptible to tobacco smoke. The present invention relates to a table and an indoor ventilation structure that can effectively separate smoke. Specifically, the present invention includes a top plate that is continuous from the near end to the far end and at least the far end is bent into a curved surface, and an air discharge that discharges air from the near end to the far end. The present invention relates to a table having an outlet and capable of generating an airflow flowing from the vicinity of the near end portion toward the far end portion along the top plate.

  Recently, smokers smoking when non-smokers (or smokers) are present are required to make efforts to prevent passive smoking under the “Health Promotion Act” enforced in May 2003. There is a difficult social situation because it is clearly written and smoking is being divided into cigarette smoke in the building. In order to solve this problem, in many office buildings, restaurants, etc., a method of providing a smoking space and a non-smoking space, such as accommodating a smoker in an isolated space, and completely separating the space is taken.

  The above method is of course effective in terms of isolating non-smokers from cigarette smoke, but a natural colleague, friend, family, etc., depending on the presence or absence of smoking, rather than staying together, except for the presence or absence of smoking. This causes the inconvenience of being isolated. If a group of smokers and non-smokers uses a restaurant, all use the smoker's table and put up with the smoker's cigarette smoke, or all use the non-smoker's table Smokers are then forced to put up with smoking or choose to use separate tables for smokers and non-smokers.

The present invention eliminates the inconvenience as described above, and the cigarette smoke is moved from around the smoker by the local airflow so that no problem occurs even if a smoker and a non-smoker are present. It provides a table and a room ventilation structure that are naturally discharged toward the room.
In the specification, the present invention will be described by taking the case of cigarette smoke as a typical example. However, the present invention slowly introduces and uses polluted air and smoke on an air flow toward the vicinity of the far end of the table. It is suitable for creating a comfortable space that is not easily affected by polluted air and smoke as well as tobacco smoke. It should be noted that in the following description, the portion described as cigarette smoke can be read as contaminated air or smoke.

  In the present invention, in order to guide the local airflow containing tobacco smoke in a predetermined direction, a slow airflow (a phenomenon called the Coanda effect) that flows from the near end to the far end of the table along the table top plate. Related airflow) is being used effectively. When an object fixed in or near the airflow exists, the airflow has a property of flowing along the surface of the object. This phenomenon is one of the manifestations of surface tension (the underlying force is intermolecular attractive force) and Bernoulli's theorem, just as a fluid placed in a vacuum takes a spherical form due to surface tension. A fluid force acts on the airflow contacting the boundary surface with the fixed object in the direction attracted to the boundary surface.

For example, Japanese Patent Application Laid-Open No. 11-18957 discloses a prior art relating to the creation of an airflow in a specific direction to discharge smoke. The publication relates to a so-called hot plate, which is provided with an air outlet toward the center of the plate at the upper part of the peripheral wall of the dish-shaped plate, and a suction port at the center of the plate, together with the air discharged from the outlet. The smoke generated during cooking is sucked from the suction port.
In the case of this invention, since the blowout port and the suction port are separated from each other by only about several tens of centimeters, no special consideration is given to the shape of the plate, and the technical idea of creating an airflow that slowly flows along the solid surface There is no.

  Japanese Patent Laid-Open No. 2007-228986 is another example of the invention that generates airflow. The invention described in the publication relates to a device for removing suspended substances in air. According to the publication, the suspended solids removal apparatus includes a surface provided in the air, an induced airflow generating unit that generates an induced airflow and blows out the induced airflow in the vicinity of the surface, and an adsorption attached to the surface. It consists of an agent. It is described that the induced airflow from the induced airflow generation unit is guided toward the surface and flows along the surface.

The above is an example of a device that creates an air flow and obtains the desired effect, but is a device that presupposes a considerably high flow velocity, and slowly in a predetermined direction along the surface as in the present invention. The idea of generating a constant airflow cannot be found. Regarding tobacco smoke treatment, as in the device described in Japanese Patent Laid-Open No. 2001-245649, a device that sucks tobacco smoke and processes it with a filter or the like, or Japanese Patent Laid-Open No. 7-63380. A system for sucking an updraft generated by an airflow generator provided at the center of a desk from a suction port at the ceiling position is disclosed as in the described device, but the near end along the top plate of the table is disclosed. It is not a device that intends to emit cigarette smoke naturally while maintaining a comfortable environment for the user by generating a slow air flow from the end to the far end.
Japanese Patent Laid-Open No. 11-18957 JP 2007-228986 A JP 2001-245649 A JP-A-7-63380

  In view of the above problems in the current state of the art, the present invention creates a local and gentle airflow along the table top surface, and the smoke of tobacco from nearby smokers gently moves toward the far end of the table. An object was to provide a device that is led and discharged.

  In order to achieve the above object, the present invention provides a top plate that is continuous from the near end portion to the far end portion and at least the far end portion is bent in a curved shape, and air is directed from the near end portion toward the far end portion. Provided is a table having an air discharge port for discharging, and capable of generating an airflow flowing from the vicinity of the near end portion toward the far end portion along the top plate.

  In this invention, the near end part of a table refers to the edge part of the side which a user contacts. In the case of a table on the assumption that the user touches only one side, such as a counter, the far end of the table has an edge on the opposite side of the near end, that is, an edge that is not touched by a person. Point to. In the case of a table in which the user touches the surroundings regardless of the shape, such as a round shape, a rectangle, or an ellipse, the far end indicates the vicinity of the center of the table. For example, in the case of a donut-shaped table, the edge in contact with the center circle is the far end, but in the case of a circular table without a hole, the edge does not exist, but for convenience, the vicinity of the center is near the far end. I will call it.

  The air discharge port that discharges air from the near end portion toward the far end portion is provided so as to discharge air from the edge portion on which the user sits toward the opposite side or the center of the table. A device using a driving force such as a fan may be provided at the discharge port, or only an opening may be provided to create an air flow by natural convection. The air discharged from the air discharge port gently flows on the top plate from the vicinity of the near end portion toward the far end portion, and along with this, the smoke of the cigarette smoked by the smoker gradually moves along the table top plate. To the far end of the table.

  A device for generating an updraft or a device for generating a downdraft may be provided near the far end of the top plate. The device that generates the upward airflow may be a device (for example, a fan) having a driving force that generates an upward airflow, or may simply be a heat source. Alternatively, it may be heat generated by a lighting device provided at the far end of the table, heat generated by some device, or heat received by irradiating illumination near the far end of the table. The apparatus for generating the downdraft is not limited to this, but is a fan, for example. By providing the above-mentioned apparatus, the slow air flow from the near end portion to the far end portion of the table becomes more prominent, and it becomes possible to effectively discharge cigarette smoke.

  Most of the top surface of the top plate may be flat, but it is preferable that the far end is bent in a curved shape upward or downward. For example, when the airflow guided to the far end along the table top is intended to rise from the table far end, an illumination device or a fan is provided at the far end, so that the upper surface of the table top If the shape swells upward toward the far end, the airflow toward the far end along the top plate is more effectively guided. Similarly, when a downward airflow is generated at the far end of the table, it is desirable that the far end bends downward in a curved shape in order to effectively guide the airflow.

  The top plate may be substantially circular or elliptical, and the central portion may be convex or concave upward. In the present specification, a table having a convex central portion called a far end portion is compatible with a configuration that generates an upward air flow from the central portion. On the contrary, a table with a concave central part is compatible with a configuration in which a downward air flow is generated from the central part. In that case, it is desirable to have a suction port in the center of the table.

  There may be an opening in the center of the top plate, but this is not essential. In the case where the central portion is open, a device for generating an updraft or a downdraft can be provided in the opening. When the central portion of the top plate is not open, a rising airflow can be generated by using a heat source in the central portion, heat generated by the lighting device, or heat received by illuminating the central portion. It is obvious that the planar shape of the top plate is not limited and may be rectangular or square.

  According to the present invention, further, the table and the indoor structure provided with a suction port above or below the far end of the table are combined from the near end to the far end along the table top plate. It is possible to realize an indoor ventilation structure that effectively promotes an airflow that flows slowly toward the vehicle.

  If it is assumed that an ascending air current is generated from the vicinity of the far end of the table, it is effective to provide a suction port above it, that is, on the ceiling of the room and above the far end of the table. However, the suction port does not necessarily have to be directly above the far end of the table. It is important to provide a suction port at a position where ventilation can be efficiently performed according to the room shape. In order to generate a downdraft from the vicinity of the far end of the table, it is effective to provide a suction port on the floor or in the lower part of the room.

  The airflow can be further promoted by including the table described above and an ascending airflow generating device that generates an ascending airflow at the far end of the table or a device that generates a descending airflow.

It may be positioned so that there is a gap between the far end of the top plate and the indoor wall, and a suction port may be provided above or below the gap to promote airflow due to the Coanda effect.
Furthermore, the indoor ventilation structure described above can discharge cigarette smoke more effectively by using a replacement ventilation system together.

In the case of using the above-described present invention, although smoke is smoked at or near the end of the table, the cigarette smoke is gently guided to the far end of the table along the upper surface of the table and discharged from the room. When a smoker and a non-smoker are present, the non-smoker does not feel uncomfortable with the smoke, and at the same time, the smoker can freely smoke. Smokers are not stressed because they are not confined in a small smoking space or forced to smoke in front of a particular device. Moreover, since it is not necessary to turn a powerful fan or the like, it is possible to provide a quiet and comfortable space, which also saves energy. Therefore, the present invention is effective when applied to many spaces such as a conference room, a common room, a dining room, and a office room that require a quiet and comfortable space.
The present invention creates not only tobacco smoke but also polluted air, smoke emission, or fresh air introduction in an extremely gentle manner without noise and generation of intense airflow, creating a comfortable space. can do.

  Hereinafter, specific embodiments of the present invention will be described based on examples. However, the present invention is not limited to the examples described below, and the examples are described to help the understanding of the invention. It goes without saying that it is not too much.

  FIG. 1 is a conceptual diagram schematically showing a table 100 according to the present invention. The top plate 110 has a substantially elliptical planar shape, and the upper surface has a convex shape with the central portion bulging upward. An incandescent bulb 120 is housed in the center of the top plate 100, illuminates and warms the center, and generates a rising airflow from the center of the top plate. Around the incandescent bulb 120, an air inlet 130 is opened on the lower surface of the table, and the air introduced from the inlet 130 is guided through the top 110 toward the vicinity of the table near end 140, From the discharge port 150, it discharges toward the center part (far end part) of a table. In the case of the present embodiment, the fan 160 provided in the top plate 110 generates an air flow from the suction port 130 to the discharge port 150. However, if a sufficient air flow is secured by natural convection, the fan 160 is not provided. May be.

  The airflow discharged from the discharge port 150 is guided to the vicinity of the central portion (far end portion) on the table along the top surface of the top plate 110, and is carried away upward from the central portion of the table by the rising airflow. What is important here is that the smoke of cigarettes by smokers located near the near end of the table is caught in the airflow that slowly flows on the table toward the center and guided to the center of the table .

  FIG. 2 is an enlarged view of the vicinity of the near end including the discharge port 150 of the table shown in FIG. An air flow path 152 extending from a suction port (not shown) to the discharge port 150 is formed inside the table. The discharge port may be provided with a louver that regulates the air flow rate and the discharge direction.

  FIG. 3 shows the result of simulating the airflow property using the above table by a computer. When a smoker sits near the table's near end and smokes, the smoke discharged from the near end to the far end of the table is attracted by the airflow on the table and merges with it. It is discharged upward by riding on the rising airflow from the section. Further, the sidestream smoke rising upward is not significantly affected by the disturbance and is effectively discharged by the replacement ventilation.

FIG. 4 is a schematic diagram of an experiment for examining the effectiveness of a cigarette smoke exhaust mechanism using a local airflow, assuming that an air discharge port is provided at the near end of the table and an upward airflow is generated by a heat source at the far end. It is. In this experiment, various conditions are set so as to correspond to approximately 1/2 scale with respect to the actual table size.
The air discharge port has a structure in which air is supplied by a fan (not shown) installed under the top plate and airflow is uniformly generated from the discharge port 150 along the curved surface toward the far end. The far-end heat source has a planar heating element. When cigarette smoke is generated near the top edge of the near-end top plate, the smoke of the cigarette is attracted to the local airflow under the conditions where the wind speed of the discharge airflow is 0.1 to 0.5 m / s and the surface temperature of the heating element is 74.0 ° C. It was observed that it was discharged efficiently to the upper part of the club.
In this experiment, the replacement ventilation system for the entire room was not used together, and the experiment was performed in a general air-conditioned room with a dry bulb temperature of 23.8 ° C around the experimental apparatus.

  FIG. 5 is a conceptual diagram schematically showing an indoor ventilation structure including the table. The airflow rising from the vicinity of the center of the table 100 installed in the center of the room is sucked from the suction port 200 provided in the upper part (ceiling) of the table center and discharged outside. At the same time, fresh air is introduced into the room from a discharge port 210 provided in the lower part of the room. The discharge port 210 may be provided at the lower part of the side surface of the room so as to promote airflow on the table as a whole, or may be provided on the floor surface 220 to promote replacement ventilation.

The conceptual diagram which shows the table based on this invention Enlarged view of the vicinity of the near end of the table including the air outlet Computer simulation results showing airflow distribution according to the present invention Outline diagram of the experiment examining the effectiveness of tobacco smoke exhaust mechanism by local airflow The conceptual diagram which shows the ventilation structure based on this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Table 110 ... Top plate 120 ... Incandescent light bulb 130 ... Suction port 140 ... Table near end 150 ... Discharge port 160 ... Fan 200 ... Suction port 210 ..Discharge port 220 ... Floor surface

Claims (6)

A table having an air outlet,
The central part of the table top plate protrudes upward or is recessed downward,
The air outlet is in the vicinity of the edge of the top surface of the table top plate,
A table that is set up to draw air toward the center of the table. A table having an air outlet,
A part of the upper edge of the table top plate protrudes upward or is recessed downward,
The air outlet is in the vicinity of the remaining edge of the top surface of the table top,
The table provided so that air may be taken out toward the said one edge part. Protrude above the top plate upper surface or in the vicinity of a portion recessed downward, the table according to claim 1 or 2 having a device for generating updraft or downdraft. The table according to claim 3, wherein a central portion of the top plate is open. And table according to any one of claims 1 to 4, of the table, protrudes above the top plate upper face or of the portion is recessed downward, upward or downward equipped with air inlet, interior An indoor ventilation structure that sucks air and promotes an airflow that flows from the vicinity of the air discharge port along the top plate toward the portion that protrudes above the top surface of the top plate or is recessed downward . The indoor ventilation structure according to claim 5 , wherein a replacement ventilation system is used in combination.

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