JP2014025621A - Air supply/exhaust system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air supply/exhaust system configured to improve efficiency in collecting exhaust gas, such as steam and lamp black occurred in a room, such a kitchen, by an exhaust hood.SOLUTION: An air supply/exhaust system includes: a square cylindrical shaped exhaust hood 4 with outer side surfaces 4d disposed in a room S so as to project downward from a ceiling surface T; an exhaust apparatus 8 that exhausts room air collected by the exhaust hood to the outside of the room; and a plurality of air outlets 9 disposed on the ceiling surface T. The supply exhaust system also includes an air supply apparatus that blows out and supplies outdoor air from the air outlets into the room. The outdoor air blown out of the air outlets descends along the entire outer side surfaces of the exhaust hood.

Description

  Embodiments described herein relate generally to an air supply / exhaust system that exhausts indoor air and supplies outdoor air into the room.

  Conventionally, as an example of this type of air supply / exhaust system, there is one described in Patent Document 1. This Patent Document 1 includes a circulation device that forms a circulating air flow in the kitchen by sucking air from the kitchen and blowing it out into the kitchen, and air that is blown into the room from the circulation device from the lower end of the front surface of the range hood to the air curtain. A circulating air blower for kitchen and a kitchen ventilation system are described that blow out from the upper part of the interior of the kitchen toward the front surface of the range hood so as to form the bottom.

JP 2002-250554 A

  However, in such a conventional system, since an air curtain is formed only on the front surface of the range hood, there is a possibility that exhaust gas such as steam and oil smoke that is not collected leaks from the side surface of the range hood to the kitchen. Furthermore, since exhaust gas such as leaking steam and oily smoke is circulated in the circulation device, the entire system may be contaminated.

  The problem to be solved by the present invention is to provide an air supply / exhaust system that improves the efficiency of collecting exhaust gas such as steam and smoke generated in a room such as a kitchen by an exhaust hood.

  The air supply / exhaust system according to the embodiment exhausts indoor air collected by the exhaust hood having a rectangular tube shape having an outer surface disposed in the room so as to protrude downward from the ceiling surface to the outside. An exhaust device and a plurality of air outlets disposed on the top surface are provided.

  Moreover, the air supply apparatus which blows off and supplies outdoor air to a room | chamber interior from a blower outlet is comprised, and it is comprised so that the outdoor air blown out from the blower outlet may descend | fall along the whole outer surface of an exhaust hood.

The external appearance perspective view of a part of air supply / exhaust system of 1st Embodiment. The figure which shows the whole structure of the air supply / exhaust system of 1st Embodiment. The figure which shows the whole structure of the air supply / exhaust system of 2nd Embodiment. The figure which shows the whole structure of the air supply / exhaust system of 3rd Embodiment. The figure which shows the whole structure of the air supply / exhaust system of 4th Embodiment. The principal part schematic plan view of the air supply / exhaust system of 5th Embodiment. The principal part schematic block diagram of the air supply / exhaust system of 5th Embodiment. The principal part schematic plan view of the air supply / exhaust system of 6th Embodiment.

  Hereinafter, an air supply / exhaust system according to an embodiment will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same or an equivalent part in several drawing.

(First embodiment)
FIG. 1 is an external perspective view of a part of the air supply / exhaust system according to the first embodiment, and FIG. 2 is a diagram showing an overall configuration of the air supply / exhaust system according to the first embodiment. The air supply / exhaust system 1 is disposed in a room S such as a kitchen.

  The room S is the kitchen itself, or includes the kitchen as part of the room. A cooking table 2 is installed on the floor surface F of the room S, and a cooking utensil 3 is placed on the cooking table 2. The cooking table 2 is a heating device provided with a gas stove, for example, and the cooking utensil 3 is, for example, a pan or a pot.

  An exhaust hood 4 is disposed on the ceiling surface T above the cooking table 2 and the cooking utensil 3 so as to protrude from the ceiling surface T to the room S side below the figure. The exhaust hood 4 has a rectangular tube shape such as a square tube, and includes a main body 4a that forms a rectangular tube-shaped body, and an upper end portion 4b that protrudes from the ceiling surface T of the main body 4a into the ceiling back Ta in the figure. Have. The upper end 4b is provided with a discharge port 4e. The main body 4a hangs down from the ceiling surface T into the room S and opens the lower end 4c. On the outer surface of the main body 4a, a plurality of side surfaces 4d and 4d hang down from the ceiling surface T into the room S are formed. The exhaust hood 4 sucks and collects exhaust gas such as steam and oil smoke generated from the cooking utensil 3 from the lower open end 4c together with room air.

  One end of an exhaust duct 5 disposed in the ceiling back Ta is connected to the exhaust port 4e of the upper end portion 4b of the exhaust hood 4 so that the exhaust duct 5 communicates with the outside. Is connected. In the middle of the exhaust duct 5, an exhaust blower 7 for blowing the exhaust to the outside is provided.

  The exhaust device 8 includes the exhaust hood 4, the exhaust duct 5, the exhaust port 6, and the exhaust fan 7.

  Then, four air outlets 9 are provided on the ceiling surface T of the room S so as to surround each side of the outer periphery of the exhaust hood 4, for example, four sides. Each outlet 9 has substantially the same length as the length in the width direction (the length in the lateral direction in FIG. 2) of each outer surface 4d of the exhaust hood 4. Each air outlet 9 has an end portion on the ceiling back Ta side connected to one end of an air supply duct 10 disposed in the ceiling back Ta so as to be able to communicate therewith. The other end of the air supply duct 10 is connected to an outside air introduction port 11 communicating with the outside of the room S. An air supply fan 12 is provided in the air supply duct 10. The air supply device 13 includes the outside air inlet 11, the air supply duct 10, and the air supply fan 12.

  The air supply duct 10 connects the outside air inlet 11 and the air supply fan 12 by one duct, and the air supply fan 12 and the four air outlets 9 are connected by four branch ducts. .

  Each air outlet 9 is disposed in the vicinity of each outer side surface 4d of the exhaust hood 4 and is formed in an elongated slit shape. Each air outlet 9 is configured to blow air downward in the vertical direction along each outer surface 4 d of the exhaust hood 4.

  Next, the operation of the air supply / exhaust system 1 will be described.

  First, the exhaust device 8 and the air supply device 13 are operated. For this reason, the indoor air in the room S is sucked and collected by the exhaust hood 4 by the operation of the exhaust fan 7 and then exhausted from the exhaust port 6 to the outside through the exhaust duct 5.

  On the other hand, outdoor air, which is outside air, is introduced from the outside air introduction port 11 by the operation of the air supply blower 12, and then supplied to the room S from each outlet 9 through the air supply duct 10. Thereby, indoor air is ventilated.

  When cooking is performed on the cooking table 2 in such a ventilation environment, the cooking utensil 3 exhausts steam or smoke. Since the exhaust gas such as steam and smoke is heated, an upward airflow A rising upward is generated. The ascending air current A is sucked and collected from the lower open end 4c of the exhaust hood 4 by the operation of the exhaust device 8 and exhausted to the outside.

  On the other hand, the outdoor air (outside air) blown out from each outlet 9 by the operation of the air supply device 13 descends downward along the entire outer side surfaces 4d, 4d,. Airflow B is generated. When the descending airflow B descends past the lower end 4c of the exhaust hood 4, a flow that is sucked into the exhaust hood 5 is added to the descending flow, and the direction of the downward airflow B changes greatly. This flow acts so as to wrap the exhaust gas such as steam and smoke generated from the cooking utensil 3. That is, it acts to prevent the exhaust gas such as steam and smoke from diffusing into the room S. For this reason, the updraft A that tries to escape from the suction of the exhaust hood 4 is forcibly guided to the exhaust hood 4. Since the blower outlet 9 is arrange | positioned at the perimeter of the exhaust hood 4, the uniform downward airflow B without a bias can be formed. Thereby, exhaust gas such as steam and oily smoke can be efficiently collected from any direction of the exhaust hood 4, and exhaust gas such as steam and oily smoke that escapes into the room S without being collected by the exhaust hood 4 can be reduced. Can do.

(Second Embodiment)
FIG. 3 is a diagram showing an overall configuration of an air supply / exhaust system 1A according to the second embodiment. As shown in FIG. 3, the air supply / exhaust system 1 </ b> A replaces the air supply blower 12 of the air supply / exhaust system 1 according to the first embodiment with a built-in duct type air conditioner 21, and the outside air introduction port 11. Is mainly connected to an air supply opening 23 that opens into the room S via the second air supply duct 22.

  That is, this air supply / exhaust system 1A is provided with a suction port 21a of a built-in type duct-type air conditioner 21 in the room S, while its outlet side is connected to four outlets 9 via four intake ducts 10. Is connected to each.

  Therefore, according to this air supply / exhaust system 1A, as shown in FIG. 3, the indoor air is sucked into the air conditioner body from the suction port 21a by the blower of the duct type air conditioner 21, where Heat is exchanged with the refrigerant flowing in the exchanger, and the air-conditioned air is blown into the room S from each outlet 9. The air blown out from each air outlet 9 descends downward along each outer side surface 4d of the exhaust hood 4 to generate a downdraft B as in the air supply / exhaust system 1 according to the first embodiment. For this reason, it is possible to reduce the diffusion of the exhaust gas such as steam and oily smoke into the room S and to improve the ventilation efficiency by the exhaust hood 4.

  Moreover, since the indoor air air-conditioned by the duct type air conditioner 21 is blown out around the cooking table 2, the comfort of the cook around the cooking table 2 can be improved.

  In addition, outdoor air is naturally supplied from the air supply port 23 to the room S via the external air introduction port 11 and the second air supply duct 22. That is, in this air supply / exhaust system 1A, the blower of the duct type air conditioner 21 blows out the indoor air sucked from the suction port 21a through the blower outlet 9 into the room S and circulates through the room S, while the exhaust device 8 By exhausting the room S by the above operation, the room S can be set to a negative pressure. For this reason, outside air is naturally introduced from the outside air introduction port 11 and can be supplied to the negative pressure chamber S.

(Third embodiment)
FIG. 4 is a diagram showing an overall configuration of an air supply / exhaust system 1B according to the third embodiment. As shown in FIG. 4, this air supply / exhaust system 1B replaces the built-in type duct-type air conditioner 21 of the air supply / exhaust system 1A according to the second embodiment with an external air conditioner 31, thereby providing a second air supply The main feature is that the duct 22 and the air supply port 23 are omitted.

  In other words, the external air conditioner 31 can be ventilated by connecting the suction port 31a to the outside air introduction port 11 through a duct, taking outdoor air from the outside air introduction port 11, exchanging heat, and blowing it out into the room S as conditioned air. This is a duct type air conditioner.

  According to this air supply / exhaust system 1B, the effects similar to those of the air supply / exhaust system 1A according to the second embodiment can be obtained, and the air supply fan 12 does not need to be provided. Cost can be reduced.

(Fourth embodiment)
FIG. 5 is a diagram showing an overall configuration of an air supply / exhaust system 1C according to the fourth embodiment. As shown in FIG. 5, the air supply / exhaust system 1 </ b> C has a main feature in that each air outlet 9 of the air supply / exhaust system 1 according to the first embodiment is replaced with a second air outlet 39.

  That is, the air supply / exhaust system 1C generates the downdraft B that is blown out from the second air outlets 39 directly onto the outer side surfaces 4d of the exhaust hood 4 and descends along the outer side surfaces 4d. It is characterized in that each of the second air outlets 39 is inclined at an angle to be made.

  According to this air supply / exhaust system 1C, the air blown out from each second air outlet 39 is blown against each outer side surface 4d of the exhaust hood 4, so that a descending airflow B descending along each outer side surface 4d is generated. Efficiency can be improved. Note that the air outlets 9 and 39 blow out air in the horizontal direction along the ceiling surface T toward the upper end portion near the ceiling surface T of the exhaust hood 4, and then at the upper end portion near the ceiling surface T of the exhaust hood 4. You may comprise so that it may descend | fall along each outer side surface 4d, after spraying. Moreover, you may comprise so that the air blown off from the blower outlet 9 to required downward directions, such as the orthogonal | vertical direction, may be blown against each outer surface 4d of the exhaust hood 4 by the ventilation guide not shown.

  The second air outlet 39 may be replaced with the air outlet 9 of the air supply / exhaust systems 1A and 1B according to the second and third embodiments.

(Fifth embodiment)
FIG. 6 is a diagram showing an overall configuration of an air supply / exhaust system 1D according to the fifth embodiment. As shown in FIG. 6, this air supply / exhaust system 1D is mainly characterized in that the air outlet 9 and the second air outlet 39 are replaced with a pair of upper and lower third air outlets 49 and 59 shown in FIG. Have.

  The third outlets 49 and 59 are arranged substantially in parallel in the vicinity of the outer sides of the outer side surfaces 4d of the opposing sides facing each other in the vertical direction of the exhaust hood 4 in the figure.

  These third air outlets 49 and 59 are formed to have a required length longer than the longitudinal direction in the figure of each of the outer side surfaces 4d facing each other of the exhaust hood 4, and project slightly longer in the longitudinal direction than the longitudinal direction length of each outer side surface 4d. A pair of end portions 49b, 49c, 59b, 59c is formed on each main body portion 49a, 59a.

  The pair of third outlets 49 and 59 are vertically downward (as shown by arrows in the figure) along the two opposing outer surfaces 4d of the exhaust hood 4 in the main body portions 49a and 59a (FIG. 6). In FIG. 7, air is blown out obliquely downward along the outer side surface 4 d of the exhaust hood 4 as shown by the arrows in FIG. 7. It is configured as follows.

  According to the air supply / exhaust system 1D, the third air outlets 49 and 59 may be provided on the two outer sides of the exhaust hood 4, so that the air outlets 9 and 39 of the first to fourth embodiments are used. Cost reduction can be achieved compared with the case where four are provided.

(Sixth embodiment)
Further, the air outlets 9 and 39 may be configured as a fourth air outlet 69 having an L-shaped planar shape as shown in FIG. These fourth outlets 69 are corners formed by the two outer side surfaces 4d, 4d,... Of the exhaust hood 4 adjacent to each other. Are arranged side by side.

  The fourth air outlet 69 blows air obliquely downward along the outer side surface 4d of the exhaust hood 4 from the L-shaped end portions 69b and 69c, while the main body 69a is connected to the outside of the exhaust hood 4. Air is blown out vertically along the side surface 4d (in FIG. 8, in the direction of the back surface of the paper).

  The fourth air outlet 69 may be provided at the two corners of the exhaust hood 4, so that the cost can be reduced as compared with the case where four exhaust ports are provided.

  In addition, you may apply the said 3rd, 4th blower outlet 49,59,69 to the blower outlet 9,39 which concerns on the said 1st-4th embodiment.

  As mentioned above, although several embodiment of this invention was described, these embodiment is shown as an example and is not intending limiting the range of this invention. These novel embodiments can be implemented in various other forms, and various omissions, substitutions, and changes can be made without departing from the scope of the present invention. These embodiments and modifications thereof are included in the scope and gist of the present invention, and are included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 1,1A, 1B, 1C, 1D ... Supply / exhaust system, 4 ... Exhaust hood, 8 ... Exhaust device, 9 ... Air outlet, 13 ... Air supply device, 21 ... Built-in type duct type air conditioner, 21a ... Suction port , 23 ... Air supply port, 31 ... External air conditioner, 31a ... Suction port, 39 ... Second air outlet, 49, 59 ... Third air outlet, S ... Indoor, T ... Ceiling surface.

Claims (4)

A rectangular tube-shaped exhaust hood having an outer surface disposed in the room so as to protrude downward from the ceiling surface;
An exhaust device for exhausting indoor air collected by the exhaust hood to the outside;
A plurality of air outlets disposed on the top surface;
An air supply device that blows out and supplies outdoor air from the outlet to the room,
An air supply / exhaust system, wherein outdoor air blown out from the air outlet is configured to descend along the entire outer surface of the exhaust hood. A rectangular tube-shaped exhaust hood having an outer surface disposed in the room so as to protrude downward from the ceiling surface;
An exhaust device for exhausting indoor air collected by the exhaust hood to the outside;
A plurality of air outlets disposed on the top surface;
An air conditioner for supplying air-conditioned air after taking in indoor air and exchanging heat from the outlet to the room;
An air supply device for supplying outdoor air into the room through an air supply port,
The air supply / exhaust system, wherein the conditioned air blown out from the outlet is configured to descend along the entire outer surface of the exhaust hood. A rectangular tube-shaped exhaust hood having an outer surface disposed in the room so as to protrude downward from the ceiling surface;
An exhaust device for exhausting indoor air collected by the exhaust hood to the outside;
A plurality of air outlets disposed on the top surface;
An air conditioner for supplying the conditioned air after taking in outdoor air and exchanging heat from the outlet to the room,
The air supply / exhaust system, wherein the conditioned air blown out from the outlet is configured to descend along the entire outer surface of the exhaust hood. The air supply / exhaust system according to any one of claims 1 to 3, wherein the air blown out from the blowout port is blown out toward the entire outer side surface of the exhaust hood.

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