JP2000283515A - Air supply exhaust device for kitchen - Google Patents

Abstract

PROBLEM TO BE SOLVED: To collect cook exhaust gas from a cooking apparatus through an exhaust hood. SOLUTION: This air supply exhaust device for a kitchen comprises an air intake duct 2 extending downward from a ceiling toward a floor surface along the back of a cooking apparatus 22 installed on a floor surface; an exhaust hood 6 disposed above the cooking apparatus 22; an exhaust duct 4 connected to the exhaust hood 6; and an exhaust fan to discharge cooking exhaust through the exhaust hood 6 and the exhaust duct 4. Outside air introduced through the air intake duct 2 flows in a kitchen through a space between the cooking apparatus 22 and the floor surface, and cooking exhaust gas from the cooking apparatus flows upward and flows out to the outside through the exhaust hood 6 and the exhaust duct 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a kitchen air supply / exhaust device for introducing outside air into a kitchen and discharging cooking exhaust gas generated by a cooking appliance to the outside.

[0002]

2. Description of the Related Art A cooking appliance such as a gas stove is installed in a kitchen. Above the cooking appliance, cooking exhaust gas (eg, oil smoke, odor), combustion exhaust gas, and the like generated by the cooking appliance are collected. An exhaust hood is provided. The exhaust hood is opened to the outside through an exhaust duct, and an exhaust fan is provided in connection with the exhaust hood. In such a device, an exhaust fan sucks air in the kitchen (combustion exhaust gas, oil smoke, etc.), and the air collected by the exhaust hood is exhausted outside through an exhaust duct. Then the exhaust in the kitchen is performed.

[0003]

However, in such a device, the air in the kitchen is discharged outside the room. Therefore, when air conditioning the kitchen, the conditioned air is discharged to the outside and the air discharged to the outside is discharged. There is a problem that the same amount of air must be air-conditioned, and the cost of air-conditioning increases.

In order to solve such a problem, a supply / exhaust device has been proposed in which outside air is introduced into a kitchen, and a part of the introduced outside air flows into an exhaust hood to improve the efficiency of air conditioning. I have. As an example of this air supply / exhaust device, one disclosed in, for example, JP-A-61-66036 is known. In this known air supply / exhaust device, an air outlet of an intake duct is arranged above cooking equipment in a kitchen, and an air inlet of an exhaust duct is arranged between the air outlet of the intake duct and the cooking equipment. The outlet and the suction port of the exhaust duct are disposed relatively close to each other.

[0005] In such a supply / exhaust device, a part of the outside air blown out from the outlet of the intake duct is collected in the inlet of the exhaust duct. Of the air conditioning efficiency is suppressed. However, since the outside air is blown out near the suction port of the exhaust duct, the flow of air flowing through the exhaust duct is disturbed by the outside air blown through the intake duct, and a part of the air flowing through the exhaust duct is attracted by the flow of the outside air, As a result, there is a problem that cooking exhaust gas including oil smoke and the like flows to the indoor side and pollutes surrounding air.

As another example of the air supply / exhaust device, one disclosed in Japanese Patent Publication No. 7-35916 is known. In this air supply / exhaust device, an exhaust hood is provided above cooking equipment in a kitchen, and the exhaust hood is open to the outside via an exhaust duct. In addition, an intake duct for introducing outside air extends into the cooking appliance, and an outlet thereof is elongated along the front surface and both side portions of the cooking appliance.

In such a supply / exhaust device, the outside air from the intake duct blows upward from blowout ports provided on the front and both sides of the cooking appliance, and the blown air forms an air curtain around the cooking appliance. Then, the exhaust gas is collected by the exhaust hood, and thus the cooking exhaust gas such as oil smoke is prevented from flowing to the indoor side. However, because the air curtain flowing from the outlet to the exhaust hood disrupts the air flow near the cooking appliance,
There is a problem that the heating efficiency of a cooking appliance (for example, a gas stove or the like) is reduced. In addition, since the airflow of the air curtain flows toward the exhaust hood in addition to the cooking exhaust gas and the combustion exhaust gas, the amount of air collected by the exhaust hood increases, and the cooking exhaust gas containing oil smoke and the like from the exhaust hood. , And the combustion exhaust becomes easy to overflow. In order to prevent the cooking exhaust gas from overflowing, it is necessary to increase the size of the exhaust hood and the exhaust capacity of the exhaust fan.

[0008] It is an object of the present invention to provide a kitchen air supply / exhaust device capable of collecting cooking exhaust gas from a cooking appliance via an exhaust hood and suppressing a decrease in heating efficiency in the cooking appliance. It is.

[0009]

According to the present invention, there is provided an air intake duct which extends downward from the ceiling toward the floor surface on the back side of cooking equipment installed on the floor, and an exhaust air arranged above the cooking equipment. A hood, an exhaust duct connected to the exhaust hood, and an exhaust fan for exhausting cooking exhaust through the exhaust hood and the exhaust duct. The outside air introduced through the intake duct is connected to the cooking appliance and the floor. And the cooking exhaust air from the cooking appliance flows upward and flows out through the exhaust hood and the exhaust duct to the outside.

According to the present invention, the intake duct extends from the ceiling to the floor on the back side of the cooking appliance, and outside air introduced through the intake duct passes through the kitchen between the cooking appliance and the floor on which the cooking appliance is installed. It is discharged into. An exhaust hood is provided above the cooking appliance. By providing the intake duct and the exhaust hood in this way, the distance between the outlet of the intake duct and the intake of the exhaust hood increases,
Thereby, the disturbance of the flow of the cooking exhaust gas is reduced, and the collection efficiency of the cooking exhaust gas by the exhaust hood can be improved. In addition, thereby, the exhaust duct and the intake duct are both arranged on the ceiling side, and these ducts can be configured as one unit. Further, by providing the intake duct on the back side of the cooking appliance, the intake duct and the introduced outside air flowing therethrough have a heat insulating effect on the wall surface, and the cooking appliance can be installed closer to the wall surface.

Further, in the present invention, a blow-out portion extending between the cooking appliance and the floor is provided at a lower end portion of the suction duct, and the outside air introduced through the suction duct is supplied from the blow-out portion to the outside through the blow-off portion. It is characterized by being blown out to the front side of the cooking appliance.

According to the present invention, a blow-off portion is provided at the lower end of the intake duct, and the introduced outside air is discharged from the blow-out portion to the front side of the cooking appliance. From above to the exhaust hood, and the cooking air can be collected in the exhaust hood by such an air flow. When the cooking appliance is a combustion appliance such as a gas stove, for example, the air flowing toward the exhaust hood is used as combustion air, so that the combustion state of the combustion appliance can always be kept in a good state.

In the present invention, a plurality of air outlets are provided in a portion of the intake duct on the back side of the cooking appliance, and a part of the outside air flowing through the air intake duct is provided in the plurality of air outlets. From the back side of the cooking appliance.

According to the present invention, a blow-off hole is provided in a part of the exhaust duct, and a part of the outside air flowing through the intake duct blows out from the blow-out hole to the back side of the cooking appliance. The rise can be suppressed, and the back side can be kept in a dry state.

In the present invention, the amount of outside air introduced through the intake duct is 20 to 60% of the amount of outflow through the exhaust hood.

According to the present invention, since the introduced amount of outside air is 20 to 60% of the outflow amount of air flowing out through the exhaust hood, the cooking exhaust gas from the cooking appliance can be discharged to the outside together with the introduced air. Overflow of cooking exhaust, combustion exhaust, and the like in the exhaust hood can be reduced.

Further, in the present invention, the cooking appliances are arranged on both sides of the intake duct, the intake ducts function as partition walls in a kitchen, and the exhaust hoods are arranged above the cooking appliances on both sides, respectively. The outside air introduced through the intake duct is blown out from the lower end to both sides through the space between the cooking appliance and the floor, and the blown out air flows upward and is collected by the exhaust hood opposed to the cooking appliance. It is characterized by.

According to the present invention, since cooking appliances are arranged on both sides of the intake duct, the suction duct can function as a partition in the kitchen. In addition, air introduced through the suction duct blows out to both sides of the intake duct, and the blown air flows toward the corresponding exhaust hood. Can be discharged.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a kitchen air supply / exhaust device according to the present invention will be described with reference to the accompanying drawings. First Embodiment FIG. 1 is a perspective view schematically showing a first embodiment of an air supply / exhaust device according to the present invention, and FIG. 2 is a simplified view showing an indoor space where the air supply / exhaust device of FIG. 1 is installed. It is sectional drawing.

Referring to FIGS. 1 and 2, the air supply / exhaust device according to the first embodiment includes an intake duct 2, an exhaust hood 4, and an exhaust duct 6. The intake duct 2 defines an intake passage having a rectangular cross section inside, and one end 8 of the intake duct 2 extends outside along the ceiling 10 behind the ceiling 10 of the building (not shown). ing. The other end 12 of the intake duct 2 extends substantially vertically downward from the ceiling 10 to the floor 14 of the kitchen, and the other end is installed on the floor 14. The other end 8 of the intake duct 2 is arranged, for example, close to a kitchen wall surface. The other end of the intake duct 2 is provided with a blow-out portion 16, which extends into the kitchen room. A rectangular air outlet 18 is provided at the distal end face of the air outlet 16, and outside air introduced through the air intake duct 2 is discharged from the air outlet of the air outlet 16 into the kitchen. In addition, as shown in the drawing, a deflection plate 20 can be provided at an air outlet 18 of the intake duct 2 so as to be capable of adjusting the angle at intervals, if necessary.
If necessary, an intake fan (not shown) for forcibly introducing outside air into the kitchen can be provided.

A cooking appliance 22 is installed in front of the other end 12 of the intake duct 2, that is, inside the kitchen. The illustrated cooking appliance 22 includes a kitchen table 24 installed on the floor surface.
And a gas stove 26 accommodated in a stove accommodating portion 25 provided above the kitchen table 24. For example, a cooking pot 28 is placed on the gas stove 26, and the pan 28 is heated by a flame from the gas stove 26. You. The illustrated kitchen table 24 has a bottom plate 30, leg members 32 are provided at four corners of the bottom surface of the bottom plate 30, and four support columns 34 are also provided between the bottom plate 30 and the stove accommodating portion 25. ing. The outlet 16 of the intake duct 2 is provided below the cooking appliance 22, specifically, the bottom plate 30 and the floor 14 of the kitchen table 24.
And the tip (air outlet 18)
The kitchen table 24 extends to near the front end of the bottom plate 30.
By arranging the outlet 16 in this manner, the outside air introduced through the intake duct 2 is discharged from the front side of the cooking appliance 22 into the kitchen.

The exhaust hood 6 is arranged above the cooking appliance 22. The exhaust hood 6 includes a hollow hood body 38 having a rectangular parallelepiped shape, and a lower surface (a surface facing the cooking appliance 22) of the hood body 38 is opened, and a suction port is formed in the lower surface. The suction port of the hood main body 38 is formed, for example, to have substantially the same size as the cooking appliance 22 or a somewhat larger size. The exhaust hood 6 is attached so as to protrude downward from the ceiling 10 of the kitchen.

The exhaust duct 4 defines an exhaust passage having a rectangular cross section inside, and one end 40 of the exhaust duct 4 extends along the ceiling 10 behind the ceiling 10 (not shown) of the building. It extends to open. The other end 42 of the exhaust duct 4 is bent in an L shape and located in the hood main body 38, and a suction portion 44 is provided at the other end. Suction unit 4 shown
4 has a substantially triangular cross section, and has suction ports 46 (only one is shown in FIG. 1) formed on two lower inclined surfaces, and a plurality of suction guide plates 48 are provided at each suction port 46 at intervals. Is provided. Further, an exhaust fan (not shown) for sucking air in the kitchen is arranged in the suction section 44.

In such an air supply / exhaust device, outside air outside is guided to the kitchen through the intake duct 2 and flows into the kitchen from the outlet 18 of the intake duct 2. On the other hand, when the exhaust fan (not shown) operates, the cooking exhaust (for example, oil smoke,
Odor, etc.), and the combustion exhaust gas flows upward, and is collected through an air inlet on the lower surface of the exhaust hood 6. At this time, the intake duct 2
The air that has flowed in from the air outlet 18 flows upward by the suction action of an exhaust fan (not shown), and is collected in the exhaust hood 6 together with the cooking exhaust of the cooking appliance 22 and the like. Since the outlet 18 of the suction duct 2 is located near the floor surface 14 and the outlet of the exhaust hood 6 is located near the ceiling 10, the distance between the two is large. The flow of the cooking exhaust and the like flowing from the cooking appliance 22 toward the exhaust hood 6 is hardly disturbed, and the cooking exhaust and the like flows along the air flow flowing from the outlet 18 of the intake duct 2 to the exhaust hood 6. The cooking exhaust gas can be collected in the exhaust hood 6. Cooking exhaust gas and the like collected in the exhaust hood 6 are guided to the exhaust duct 4 through the suction port 46 and discharged outside through the exhaust duct 4. As described above, cooking exhaust gas and the like from the cooking appliance 22 can be collected and discharged outside, and the air in the kitchen can be kept clean. Further, in this air supply / exhaust device, the intake duct arranged on the back side of the cooking appliance 22 and the intake air flowing therethrough have a heat insulating effect, and can prevent the kitchen wall surface from being heated by the cooking appliance 22. . In such a supply / exhaust device, the introduction amount of the outside air introduced through the intake duct 2 is set to 20 to 20 times the outflow amount (discharge amount) of the air flowing out through the exhaust hood 6 to the outside.
It is desirable to set it to 60%. With this setting, the cooking exhaust from the cooking appliance 22 can be collected in the exhaust hood 6 together with the introduced outside air.
In this case, it is possible to almost eliminate overflow of cooking exhaust and the like.

The air supply / exhaust device of the first embodiment can be installed in a kitchen, for example, as shown in FIG. FIG.
In the example, a counter 54 is provided between a kitchen 50 and a dining room (room) 52. The above-described air supply / exhaust device is installed in the kitchen 50, the outside air is introduced into the kitchen 50 through the air intake duct 2, and the air in the kitchen 50 is exhausted by the exhaust hood 6 together with the cooking exhaust from the cooking appliance 22 and the like.
And discharged through the exhaust duct 4 to the outside. An intake duct 58 is provided behind the ceiling 10 of the passenger compartment 56, and one end of the intake duct 58 opens into the passenger compartment 52,
The other end is open to the outside, and an intake fan 60 is provided in the intake duct 58. Therefore, the intake fan 60
Is activated, outside air is introduced into the passenger compartment 52 from the ceiling 60 side through the intake duct 58 by the suction action.

When outside air is introduced into the cabin 52 as described above, it is desirable to introduce more air into the cabin 52 than into the kitchen 50. With this configuration, as indicated by the arrow, an airflow flows from the cabin 52 to the kitchen 50, and cooking exhaust, combustion exhaust, and the like in the kitchen 50 can be suppressed from flowing to the cabin 52. The air inside can be kept clean.

In the first embodiment, the outlets 18 are provided on the distal end surface of the outlet 16 of the intake duct 2, but may be provided on both sides of the outlet 16 instead of or in addition to this. It may be. Second Embodiment Next, a second embodiment of the air supply / exhaust device according to the present invention will be described with reference to FIGS. FIG. 3 is a perspective view schematically showing a second embodiment of the air supply / exhaust device of the present invention, and FIG. 4 is a partial perspective view showing the vicinity of an outlet of an intake duct of the air supply / exhaust device of FIG. FIG. 5 is a partial side view showing a lower end portion of a modified intake duct. In addition, this second
In the second embodiment, the same reference numerals are given to members that are substantially the same as those in the first embodiment, and description thereof is omitted.

Referring to FIGS. 3 and 4, cooking appliance 22A
Is a microwave oven 102, for example, the length of its leg member 104 is generally short, so that the microwave oven 1
The distance between the bottom plate 106 of the second embodiment 02 and the floor surface 14 to be installed is small. Further, some cooking appliances are provided with a waste oil tank at a lower part thereof, and the interval between the cooking appliance and the floor surface 14 is narrow.

When installed in connection with such a cooking appliance 22A, this second embodiment is advantageously used. In the second embodiment, a rectangular outlet 18A is provided on the kitchen side surface at the lower end of the intake duct 2A,
The outlet extending to the kitchen side is omitted. The outlet 18A is provided with, for example, a wire net 108 in order to prevent dust and the like from entering. Other configurations of the second embodiment are substantially the same as those of the first embodiment.

In the second embodiment, the air introduced from the outside is discharged from the outlet 18A of the intake duct 2A, and the blown air is supplied to the space between the bottom surface 106 and the floor 14 of the cooking appliance 22A. Through the kitchen. Therefore, ventilation of the lower side of the cooking appliance 22A is improved, and the lower space of the cooking appliance 22A can be kept in a dry state.
Note that the air that has flowed into the kitchen flows toward the exhaust hood 6 above the cooking appliance 22A, and is collected by the exhaust hood 6 together with the cooking exhaust gas and the like, so that the same effects as in the first embodiment are achieved. You.

The lower end of the intake duct 2 may be configured as shown in FIG. Referring to FIG. 5, in this modified embodiment, the lower end of intake duct 2B is linearly inclined upward toward the kitchen side, and the outlet thereof is configured to face obliquely downward. 108 are provided. With this configuration, most of the air discharged from the outlet of the intake duct 2B flows through the space between the cooking appliance 22A and the floor surface 14, as indicated by arrows in FIG. Rear of 22A and intake duct 2B
, And the airflow on the back side can suppress an increase in temperature and an increase in humidity in the space on the back side of the cooking appliance 2B. Third Embodiment Next, a third embodiment of an intake / exhaust device according to the present invention will be described with reference to FIGS. FIG. 6 is a perspective view schematically showing a third embodiment of the supply / exhaust device according to the present invention, and FIG. 7 is a partial perspective view showing a lower end portion of an intake duct of the supply / exhaust device of FIG. FIG. 8 is a partial perspective view showing a lower end portion of a modified intake duct. In addition, this third
In the third embodiment, the same members as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

Referring to FIGS. 6 and 7, in the third embodiment, the intake duct body 1 is located at a predetermined installation position in the kitchen.
The intake duct body 120 includes a plurality of intake ducts 2C, 2D, 3E, 2F, and 2G, and each of the intake ducts 2C to 2G extends substantially from a ceiling (not shown) to a floor surface 14. It extends vertically upward and downward. Various cooking appliances 1 are provided on one side (the right side in FIG. 6) of the intake duct 2C.
22, 124, a cooking table 126 and a sink 128 are provided. The cooking appliance 122 is, for example, a fryer, and is installed, for example, on the front side of the intake duct 2D. The cooking appliance 122 is, for example, a microwave oven, and is installed in front of the intake duct 2E. Further, the sink 128 is installed on the front side of the intake duct 2F. Since the cooking appliances 122 and 124 are installed in this manner, a desired dish can be cooked in one side area of the intake duct 2C. In addition, various cooking appliances 130 (one of which is shown in FIG. 6), a cooking table (not shown), and a sink (not shown) are installed on the other side (the left side in FIG. 6) of the intake duct 2C, The cooking appliance 130 is, for example, a gas stove, and is installed on the other side of the intake duct 2C. Further, other cooking equipment (not shown), a cooking table (not shown), and a sink (not shown) are also provided in the intake duct 2.
D, 2E, 2F, and 2G are installed on the other side. Since the cooking device 130 and the like are installed in this manner, a desired dish can be cooked even in the other side area of the intake duct 2C.

In this embodiment, as can be understood from FIG. 6, the intake duct body 120 includes various cooking appliances 122 and 12.
4, provided in correspondence with the cooking table 126 and the sink 128, and functions as a partition wall for separating one side of the various cooking appliances 122, 124 and the like from the other side of the various cooking devices 128 and the like, and the intake duct body 120 (the intake duct 2C). ~ 2G) can be used to partition the kitchen as required.

Each intake duct 2C (or 2D, 2E, 2
F, 2G), various cooking appliances 122, 12
4, 130, that is, both sides of the intake duct body 120 (FIG. 6)
, A rectangular outlet 132a opening on the left and right sides
132b is formed. In addition, each intake duct 2C
A partition plate 134 is provided inside the lower end of (2D-2G).
Is provided. Each partition plate 134 is provided between the outlets 132a and 132b of each of the intake ducts 2C (2D to 2G), and is located at a substantially central portion of the outlets 132a and 132b in a vertical direction from slightly above the outlets 132a and 132b. Extending to In addition, a specific intake duct, in this embodiment, a portion of the intake duct 2E facing the cooking appliance 124 (in this embodiment, a region from the region facing the cooking appliance 124 to a region slightly above the cooking appliance 124). A number of small outlets 134 are provided (over the area).

The other basic configuration of the air supply / exhaust device is substantially the same as that of the first embodiment.
Exhaust hoods 6C and 6D are provided above them corresponding to 2, 124 and 130, and the insides of the exhaust hoods 6C and 6D are open to the outside via exhaust ducts (not shown). In this embodiment, on one side of the intake duct body 120,
Cooking appliances 122 and 124, counter 126 and sink 12
8, a large common exhaust hood 6C is provided, and cooking exhaust from the cooking appliances 122 and 124 is configured to be collected by the common exhaust hood 6C. Cooking exhaust gas from the cooking appliance 130 or the like is configured to be collected in the common exhaust hood 6D. With such a configuration, the arrangement of the intake duct body 120, the exhaust hoods 6C, 6D, and the like is maintained. In this state, the arrangement of various cooking appliances can be appropriately changed. Instead of the common exhaust ducts 6C and 6D, one exhaust hood may be provided for each of the cooking appliances 122, 124 and 130.

In the third embodiment, each intake duct 2
Outside air introduced through C to 2G is discharged to both sides from outlets 132a and 132b at the lower end. Since the partition plate 134 is provided inside each of the intake ducts 2C to 2G, the air flowing through the intake ducts 2C to 2G is guided by the partition plate 134, and
The air flowing on one side of the outlet 34 is guided to one outlet 132a, discharged from the outlet 132a to one side of the intake duct body 120, and the air flowing on the other side of the partition plate 134 is guided to the other outlet 132b. This outlet 1
The air discharged from the air inlet 32b to the other side of the intake duct body 120 flows into the kitchen through the space between the cooking appliances 122, 124, and 130, the cooking table 126 and the sink 128 and the floor 14, and the above-described air flows into the kitchen. The same effect as that of the first embodiment is achieved. Furthermore, since a plurality of outlets 134 are provided in the specific intake duct 2E, a part of the air flowing through the intake duct 2E flows out of the outlets 134 into the kitchen. Therefore, the blown air flow flows in the back space of the cooking appliance 124, the back space can be maintained in a dry state, and the air flow can prevent a rise in the temperature of the intake duct 2E.
It should be noted that such an outlet 134 can be applied to the intake ducts 2 and 2A of the first and second embodiments.

The lower end of the intake duct may be configured as shown in FIG. Referring to FIG. 8, in this modification, at the lower end of intake duct 2 </ b> C ′, blow-off portion 142 protruding toward the kitchen side is provided.
An outlet 144 is provided at the tip end surface of the second. By providing the blowout portion 142 in the same manner as in the first embodiment, the air flowing through the intake duct 2C '
2 is blown out from the outlet 144. It should be noted that such a blowing section 142 is provided corresponding to the cooking appliance when a relatively large space exists between the installed cooking appliance and the floor surface 14.

Although various embodiments of the kitchen air supply / exhaust device according to the present invention have been described above, the present invention is not limited to these embodiments, and various modifications and corrections can be made without departing from the scope of the present invention. Is possible.

[0039]

According to the first aspect of the present invention, since the distance between the air outlet of the intake duct and the air inlet of the exhaust hood is large, the disturbance of the flow of the cooking exhaust gas is reduced, and the exhaust hood is used. The collection efficiency of cooking exhaust gas can be improved. Further, by providing the intake duct on the back side of the cooking appliance, the intake duct and the introduced outside air flowing therethrough have a heat insulating effect, and the cooking appliance can be installed closer to the wall surface.

According to the second aspect of the present invention, since the blow-off portion is provided at the lower end portion of the intake duct, the introduced outside air is discharged from the blow-out portion to the front side of the cooking appliance. Is done.

Further, according to the air supply / exhaust device of the third aspect of the present invention, since a part of the outside air blows out from the outlet of the intake duct to the back side of the cooking appliance, it is possible to suppress a rise in temperature on the back side of the cooking appliance. In addition to this, the back side can be kept in a dry state.

According to the air supply / exhaust device of the present invention, the cooking exhaust gas from the cooking appliance can be discharged to the outside together with the introduced outside air, and the exhaust hood also has less overflow of cooking exhaust gas, combustion exhaust gas and the like. can do.

Furthermore, according to the air supply / exhaust device of the fifth aspect of the present invention, since cooking appliances are arranged on both sides of the intake duct, the suction duct can function as a partition in the kitchen. Further, the outside air introduced through the suction duct can be discharged to both sides of the intake duct.

[Brief description of the drawings]

FIG. 1 is a perspective view schematically showing a first embodiment of a supply / exhaust device according to the present invention.

FIG. 2 is a cross-sectional view schematically showing an indoor space where the air supply / exhaust device of FIG. 1 is installed.

FIG. 3 is a perspective view schematically showing a second embodiment of a supply / exhaust device of the present invention.

FIG. 4 is a partial perspective view showing the vicinity of an air outlet of an intake duct of the supply / exhaust device of FIG. 3;

FIG. 5 is a side view showing a part of a modified form of the intake duct in the second embodiment.

FIG. 6 is a perspective view schematically showing a third embodiment of a supply / exhaust device according to the present invention.

FIG. 7 is a partial perspective view showing a lower end portion of an intake duct of the air supply / exhaust device of FIG. 6;

FIG. 8 is a side view showing a part of a modified form of the intake duct body in the third embodiment.

[Explanation of Signs] 2, 2A, 2B, 2C, 2C ', 2D, 2E, 2F, 2
G Inlet duct 4 Exhaust duct 6, 6C, 6D Exhaust hood 10 Ceiling 14 Floor surface 16, 142 Blowout part 22, 22A, 122, 124, 130 Cooking equipment 50 Kitchen 134 Blowout hole

Claims (5)

[Claims] 1. An air intake duct extending downward from a ceiling to a floor on a back side of a cooking appliance installed on a floor, an exhaust hood disposed above the cooking appliance, and connected to the exhaust hood. Exhaust duct, and an exhaust fan for exhausting cooking exhaust through the exhaust hood and the exhaust duct, and the outside air introduced through the intake duct flows into the kitchen through the space between the cooking appliance and the floor surface. The cooking exhaust air from the cooking appliance flows upward and flows out through the exhaust hood and the exhaust duct to the outside. 2. A lower end portion of the intake duct is provided with a blowout portion extending between the cooking appliance and a floor surface, and outside air introduced through the intake duct flows from the blowout portion to a front surface of the cooking appliance. The kitchen air supply / exhaust device according to claim 1, wherein the air is blown to the side. 3. A plurality of air holes are provided in a portion of the intake duct on the back side of the cooking appliance, and a part of the outside air flowing through the air intake duct is supplied from the plurality of air holes to the cooking appliance. The air supply / exhaust device for a kitchen according to claim 1 or 2, wherein the air is blown to the rear side of the kitchen. 4. The air intake system according to claim 1, wherein the amount of outside air introduced through the intake duct is 20 to 60% of the amount of outflow discharged through the exhaust hood. Kitchen air supply and exhaust system. 5. The cooking appliance is arranged on both sides of the intake duct, the intake duct functions as a partition wall in a kitchen, and the exhaust hood is arranged above the cooking appliances on both sides, respectively. The outside air introduced through the intake duct is blown out from the lower end to both sides through the space between the cooking appliance and the floor, and the blown out air flows upward and is collected in the opposed exhaust hood. The kitchen air supply / exhaust device according to claim 1.