JPH0442663Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a hood for use in kitchens that integrally combines an original exhaust function with an air supply function.

(Prior art) Conventionally, a kitchen hood is installed above a hot area on a cooking table for exhaust only, and sucks and removes hot air generated in the hot area. A part of the outside air blown out from the air outlet installed in the room connected to the room is used, and the hood is generally used only for the purpose of exhausting air.

Further, for example, Japanese Patent Laid-Open No. 55-99539 discloses a ventilation system for kitchens that is installed above a gas range or the like.

(Problems to be solved by the invention) The hood a according to the prior art is shown in Figs. 6 and 7.
As shown in the figure, this is a dedicated exhaust system installed above the hot area, and the secondary air for combustion uses outside air blown out from the air conditioning outlet b installed at an appropriate location in the room. Therefore, in the summer, a large amount of outside air with high temperature and humidity is blown into the room, causing a deterioration of the indoor environment, and in the winter, low-temperature outside air may be sucked into the room, causing the indoor temperature to drop. In order to eliminate such environmental deterioration, the amount of outside air blown out could be adjusted freely, but due to a malfunction in the adjustment, the balance of air supply and exhaust in the room would be disrupted, causing boiled food to enter the room. There was a strong odor and there was a risk that it would disturb the air conditioning in the room. In addition, it is necessary to install ducts c and d in the ceiling to exhaust air through the hood and to supply outside air, so if several outlets are installed for air supply, the duct arrangement becomes complicated. It was inevitable that implementation would be troublesome.

In addition, the above-mentioned publication has been disclosed in consideration of these points, but the structure is complicated and there are problems in that the difference between the suction exhaust amount and the blown air supply amount is large.

(Means for solving the problem) Although a relatively large amount of outside air is required for combustion in a kitchen where hot air is used, a large amount of outside air is not required in a place where hot air is not used. Considering that if a relatively large amount of outside air is supplied to the area where it is used and exhausted at that location, deterioration of the indoor environment including the kitchen as described above can be prevented, and the structure is simplified as much as possible to achieve this purpose. In order to achieve this, the present invention forms an air supply chamber and an exhaust chamber that are divided into approximately triangular shapes with chevron-shaped partition walls as their bases on both sides of a rectangular container casing, and blows out almost the entire side of the casing on the side of the air supply chamber. As an exit, cover this with a perforated plate such as a punching board,
A supply cylinder communicating with the supply air duct is provided in the upper part of the supply air chamber, and a filter is provided to block the middle between the air outlet on the side and the supply cylinder, and the exhaust chamber has substantially the entire surface of its inclined partition wall as an intake port. This is provided with a filter, and the intake port is communicated with the suction port that is open across the entire bottom surface of the housing, and an exhaust pipe that communicates with the exhaust duct is provided at the top of the exhaust chamber, and the opening edge of the suction port is is bent inward to form a grease reservoir around the entire outer circumference, and a fan is provided in each of the air supply passage communicating with the supply cylinder and the exhaust passage communicating with the exhaust pipe. The present invention is characterized in that the outside air supplied to the supply air chamber is preheated by a heat exchange device whose heat source is exhaust heat discharged through the exhaust chamber.

(Function) In the present invention, the outside air forced into the air supply chamber 2 through the air supply cylinder 10 passes through the filter 4, and then flows through the air outlet 5, which is opened on almost the entire surface of one side of the housing 1, as shown in FIG. Air is blown to the front in an approximately horizontal direction,
On the other hand, combustion gas from the use of hot air is sucked into the exhaust chamber 3 from the intake port 1a through the intake port 7, and is discharged from the exhaust pipe 11 through the exhaust duct 13.
At this time, surrounding air is drawn to the exhaust side along with the combustion air, so the outside air blown into the room from the chamber 2 is drawn to the hood side as shown by the arrow in Figure 1 and is used as combustion air before being combusted. The oil mist contained in this exhaust gas is collected in the mouth peripheral edge 1d of the suction port 1a and in the grease reservoirs 1c and 9 on the lower surface of one side of the suction port 7.

The supplied air blown out from the outlet 5 in a substantially horizontal direction forward conditions the indoor air, and
Since it is attracted by the exhaust air sucked and removed from the hot area through the exhaust chamber 3, it is also used as secondary air necessary for combustion in the hot area, and can be used more effectively as supply air without simply being diffused indoors.

In this case, it goes without saying that the intake air and exhaust amount should be adjusted appropriately, and when used in winter in cold regions, the exhaust pipe 11 is connected to the heat exchanger 16 by a damper 17 as shown in FIGS. 4 and 5. The exhaust air is used so as to flow out into the duct 13 through the heat exchange device 16, and the cool outside air from the supply air duct 12 is preheated by exchanging heat with the exhaust heat in the heat exchange device 16, and then the air is blown. The exhaust heat was blown out from the outlet 5 to raise the temperature of the room, and the exhaust heat was recovered and utilized without the need for any outside air heating device such as a boiler.

In the summer, by switching the damper 17, the exhaust gas that has passed through the exhaust chamber 3 is communicated through the bypass path 18 to the exhaust duct 13, and the use of the heat exchange device 16 is suspended.

(Example) Embodiments of the present invention will be described with reference to the drawings.

In Figures 1 to 5, reference numeral 1 indicates a housing for a hood that is installed above a place where fire is used. A substantially triangular air supply chamber 2 and an exhaust chamber 3 are formed having both inclined surfaces of the wall 1b as their bases.

The side surface of the housing 1 on the side where the air supply chamber 2 is formed is covered with a punching board 6 at approximately the front surface as the outlet 5 of the air supply chamber 2, and an air supply chamber 2, which will be described later, is located in the middle part of the air supply chamber 2. The exhaust chamber 3 is equipped with a filter 4 to block the gap between the exhaust chamber 3 and the intake cylinder 10 provided at the upper part of the exhaust chamber 3. A grease filter 8 is provided, and a grease reservoir 9 is formed at the lower part of the incline, and the suction port 7 is communicated with the suction port 1a which is opened over the entire bottom surface of the case 1, and the opening edge 1c of the suction port 1a is A grease reservoir 1d was formed around the entire outer circumference of the curved surface.

An intake cylinder 10 connected to an air supply duct 12 is provided protruding from the upper part of the air supply chamber 2, and an exhaust cylinder 1 connected to an exhaust duct 13 is provided at the upper part of the exhaust chamber 3.
1 was installed.

In this way, outside air passes through the supply air duct 12 and enters the supply cylinder 10.
The combustion gas is blown out from the air outlet 5 toward the front in a substantially horizontal direction through the filter 4, while the combustion gas is
It is sucked into the exhaust chamber 3 from the suction port 7 through the grease filter 8 from the suction port 1a on the lower surface, and is discharged from the exhaust pipe 11 via the exhaust duct 13.

Incidentally, the exhaust including outside air and combustion air is carried out by an air supply fan 14 and an intake fan 15 provided in the supply and exhaust passages, respectively. Although the installation is shown here, the installation location may be near the exit of each duct or any other location.

FIG. 4 and FIG. 5 show another embodiment of the present invention, in which a heat exchanger 16 uses exhaust gas that has passed through the exhaust pipe 11 of the exhaust chamber 3 and uses the exhaust heat as a heat source.
is connected to the exhaust pipe 11, and a supply cylinder 1 for introducing outside air is connected to the exhaust pipe 11.
0 was communicated through the device 16 to the air supply chamber 2. Therefore, the outside air passing through the supply cylinder 10 is heated by the exhaust heat in the heat exchange device 16, and then introduced into the supply air chamber 2.

Note that a switching damper 1 is provided between the exhaust chamber 3 and the exhaust duct 13 by bypassing the heat exchange device 16.
7 forms a bypass passage 18 that alternately opens and closes with the exhaust pipe 11, and the damper 17 is switched and operated by an operating member 19.

As a result of actually measuring the airflow distribution state in the apparatus configured as described above, the wind speed and temperature values as shown in FIG. 8 were confirmed. As you can see from this airflow condition,
The outside air blown out from the outlet air-conditions the room well without being dissipated into the room, and then is turned around as air necessary for the combustion section and exhausted along with heated air due to combustion.

(Effect of the invention) When the invention is adopted, the lower surface is opened almost completely and the upper surface of the kitchen utensil has a large suction port. An air supply chamber and an exhaust chamber are formed, and the outlet of the air supply chamber is opened to a size that spans the entire side of the cabinet, allowing the necessary fresh outside air to be distributed widely indoors using the chevron-shaped partition wall. The exhaust gas that can be blown out and sucked into the exhaust chamber is also smoothly sucked into the exhaust chamber according to the chevron section, and its suction action draws outside air blown into the room to the exhaust side. The operation is smooth, and by adding a heat exchange device that uses exhaust heat, it is possible to preheat outside air without installing a heating device for outside air, making it economical for winter use in cold regions. It has the advantage of being simple and inexpensive.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a cutaway side view showing the state of use, FIG. 2 is a cutaway side view of the hood, FIG. 3 is a front view thereof, and FIG. FIG. 5 is a front view of the embodiment, FIG. 6 is a side view of the conventional example, FIG. 7 is a plan view of the same, and FIG. FIG. 1... Instrument housing, 2... Air supply chamber, 3... Exhaust chamber, 4... Filter, 5... Air outlet, 7... Air supply port, 8... Grease filter,
10... Supply cylinder, 11... Exhaust pipe, 12... Air supply duct, 13... Exhaust duct, 14... Air supply fan, 15... Air supply fan.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. An air supply chamber 2 and an exhaust chamber 3 are formed on both sides of a rectangular container casing 1 and are partitioned into a substantially triangular shape with the chevron-shaped partition wall 1b as the base. The air outlet 5 covers almost the entire side of the housing 1.
As a perforated plate 6 such as a punching board,
A supply cylinder 10 communicating with the supply air duct 12 is provided at the upper part of the intake chamber 2, and a filter 4 is provided to block the middle between the air outlet 5 on the side and the supply cylinder 10. Almost the entire surface of the inclined partition wall 1b is used as an intake port 7, which is provided with a filter 8, and the intake port 7 is communicated with the intake port 1a which is opened over the entire lower surface of the housing 1, and at the top of the exhaust chamber 3, An exhaust pipe 11 is provided which communicates with the exhaust duct 13, and the opening edge 1c of the suction port 1a is bent inward to form a grease reservoir 1d around the entire outer circumference, and an air supply passage communicates with the supply cylinder 10. and a kitchen hood in which fans 14 and 15 are provided in the exhaust passages communicating with the exhaust pipe 11, respectively. 2. A kitchen hood according to claim 1, wherein the outside air supplied to the air supply chamber 2 is preheated by a heat exchanger 16 whose heat source is exhaust heat discharged through the exhaust chamber 3.