JP3472370B2 - Kitchen room ventilation system - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation device for a kitchen room, particularly a commercial kitchen room.

[0002]

2. Description of the Related Art Conventionally, a hood is provided above a cooking appliance, and combustion exhaust gas emitted from the cooking appliance, various steam generated by cooking, oil smoke, etc. (hereinafter referred to as "gas to be exhausted") are externally provided. Has been discharged. The hood is generally connected to a duct that communicates with the outside, and a fan is provided in this duct.

However, the cooking appliance and the hood are open for cooking, and a part of the gas to be exhausted from the cooking appliance or the like leaks into the kitchen room. In order to prevent this, the fan installed in the hood should be made stronger, but the power cost of the fan increases, and the air in the kitchen room is sucked excessively, causing a malfunction of the air conditioning in the rooms connected to the kitchen room. become.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a ventilation device for a kitchen room, which efficiently discharges gas to be exhausted that leaks from a cooking appliance or the like into the kitchen room.

[0005]

According to the present invention, there is provided a hood which is provided above a cooking appliance and which is connected to a duct which communicates with the outside and which has a fan, and a hood which is provided on a ceiling of a kitchen and connected to a duct which communicates with the outside. A ventilating device for a kitchen room, comprising: an openable and closable opening, and a temperature detector provided in the vicinity of the opening, and the opening is opened when the temperature of the temperature detector exceeds a predetermined temperature. is there. Further, according to the present invention, the fan in the hood has a variable capacity depending on the load of the cooking appliance, an exhaust fan is provided in the duct connected to the opening, and the exhaust fan operates when the opening opens. Characterize. Further, the present invention is characterized in that the duct connected to the opening is connected to the duct connected to the hood on the upstream side of the fan of the duct connected to the hood.

[0006]

According to the present invention, in addition to the hood provided above the cooking appliance, an openable and closable opening communicating with the outside and a temperature detector near the opening are provided in the ceiling of the kitchen room for exhausting air. When the temperature in the vicinity of the ceiling where the extremely high temperature gas stays becomes equal to or higher than a predetermined temperature, the opening is opened, and the gas to be exhausted remaining in the vicinity of the ceiling is released to the outside.

Further, according to the present invention, in a large kitchen room in which the capacity of the fan provided in the hood is variable depending on the load of the cooking equipment, the amount of gas to be exhausted may be large, so that the vicinity of the ceiling is likely to be exhausted. When the temperature becomes higher than a predetermined temperature, the opening is opened and at the same time the exhaust fan provided in the duct connected to the opening is operated to exhaust the gas to be exhausted at once.

Further, according to the present invention, the hood and the opening are connected to the duct communicating to the outside, and the fan is provided on the downstream side of the connecting portion, and one fan always operates from the hood, if necessary. The gas to be discharged is discharged from the hood and the opening.

[0009]

The present invention will be described more specifically with reference to the following examples.

FIG. 1 shows a kitchen room 1 according to an embodiment of the present invention.
FIG. 3 is a simplified cross-sectional view of a dining room having a guest room and a guest room 2. The cooking appliance 10 has a heating means such as city gas, and the food is cooked by, for example, the pan 11. Cooking equipment 10
A hood 12 is provided above and is connected to a duct 13 communicating with the outside. A fan 14 is installed in the duct 13.
Is provided. The gas to be exhausted from the cooking appliance 10 or the like has a relatively high temperature, so rises upward,
It is collected by the hood 12, sucked by the fan 14, and discharged to the outside through the duct 13. The lower end of the hanging portion 15 of the hood 12 is provided at a distance from the cooking device 10 for cooking. Therefore, a part of the gas to be exhausted leaks to the kitchen room 1 and stays near the ceiling 21 due to the high temperature. In addition to this, the kitchen room 1 has a cooking table 22 for preparing and serving. Also at this time, some heat is generated from the hot food, which rises near the ceiling. A dining table 23 is provided near the boundary between the guest room 2 and the kitchen room 1, and food is served in the guest room 2. Chairs and tables are provided in the guest room 2, but these are omitted.

The fan 14 provided in the duct 13 is ideally capable of sucking the air in the kitchen room 1 together with the gas to be exhausted to the extent that hot air and odors in the kitchen room 1 are not emitted to the passenger room. . If this is too large, the inside of the passenger compartment 2 will be under negative pressure, and when the door of the passenger compartment 2 is opened, outside air will suddenly invade and the air conditioning will fail. If this is too small, a large amount of gas that should be exhausted from the cooking appliance 10 or the like leaks to the kitchen room 1 in large quantities. The gas to be exhausted near the ceiling of kitchen room 1
When the amount increases, it flows out from the lower part of the hanging wall 24 at the boundary between the kitchen room 1 and the guest room 2 toward the guest room 2, and brings hot air and odor to the guest room.

Even if the size of the fan 13 is suitable, a part of the gas to be exhausted leaks to the kitchen room 1 and stays near the ceiling 21 due to the high temperature. In order to discharge this gas, the ceiling 21
An opening 27 having a damper 26 that can be opened and closed is provided in the housing and is connected to a duct 28 that communicates with the outside. The damper 26 is
When the temperature detector 29 provided near the opening 27 detects a predetermined temperature, for example, 40 ° C., it opens, and it closes at a temperature slightly lower than that, for example, 38 ° C. Damper 26
When the door is opened, the gas to be exhausted remaining in the vicinity of the ceiling 21 is discharged to the outside through the damper 28 by the draft action.

In the large kitchen room 1 in which the number of cooking appliances 10 to be cooked is large and the number of cooking appliances to be used frequently changes, it is preferable that the fan 14 provided in the duct 13 connected to the hood 12 has variable capacity. Further, in such a large kitchen room 1, a fan 30 is also provided in the duct 28 connected to the opening 27,
It is preferable to operate the fan 30 at the same time when the damper 26 is opened. In this case, if the fan 30 with a damper is used, the damper 26 may not be separately provided. Further, the fan 30 may be provided in the duct 28 instead of the large kitchen room.

FIG. 2 shows a kitchen room 3 according to another embodiment of the present invention.
FIG. 1 is a simplified cross-sectional view of a dining room having 1 and a guest room 2. This embodiment is similar to the embodiment shown in FIG. 1, but
It should be noted that the duct 33 connected to the hood 32 and the duct 38 connected to the opening 37 are connected to the outside as one duct 40. The fan 34 is provided in one duct 40. In this embodiment,
When the damper 26 is opened, the fan 34 sucks air from the hood 32 and the opening 37, so the suction force from the hood 32 is reduced, and the amount of gas to be exhausted from the cooking appliance 10 leaks to the kitchen room 1. However, since it is sucked from the opening 37, there is no particular problem if it is used in a room other than the large kitchen room.

[0015]

As described above, according to the present invention, if the amount of gas to be exhausted that has stayed near the ceiling of the kitchen room remains above a certain amount, the temperature is detected and the opening provided in the ceiling is detected. Since this gas is released and the gas is discharged, the kitchen room can be sufficiently ventilated, and the hot air and odor of the kitchen room do not enter the guest room from the kitchen room.

[Brief description of drawings]

FIG. 1 is a simplified sectional view of a kitchen room 1 according to an embodiment of the present invention.

FIG. 2 is a simplified sectional view of a kitchen room 31 according to another embodiment of the present invention.

[Explanation of symbols]

1.31 kitchen room 10 Cooking equipment 12,32 hood 13, 28, 33, 38, 40 ducts 14, 30, 34 fans 21 ceiling 26 damper 27,37 opening 29 Temperature detector

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-5-346252 (JP, A) JP-A-7-49138 (JP, A) Actually open Sho-58-188532 (JP, U) Actually open 2- 114845 (JP, U) (58) Fields surveyed (Int.Cl. ⁷ , DB name) F24F ^7/ 04-7/ ¹⁰

Claims (3)

(57) [Claims] 1. A hood that is provided above the cooking appliance and is connected to a duct that communicates with the outside and that has a fan; and an openable and closable opening that is provided on the ceiling of the kitchen and that is connected to the duct that communicates with the outside. A ventilation device for a kitchen room, comprising: a temperature detector provided in the vicinity of the opening, wherein the opening is opened when the temperature of the temperature detector exceeds a predetermined temperature. 2. A fan in the hood has a variable capacity depending on a load of cooking equipment, an exhaust fan is provided in a duct connected to the opening, and the exhaust fan operates when the opening is opened. The ventilation device for a kitchen room according to claim 1. 3. The duct connected to the opening is connected to the duct connected to the hood on the upstream side of the fan of the duct connected to the hood.
Ventilation device for the kitchen room described.