JPH0156346B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a smoke exhaust system having an inertial oil removal function and an attached oil cleaning function for use in general households.

Conventional structure and its problems Conventionally, in this type of smoke evacuation device, the structure shown in Fig. 1,
As shown in FIG. 2, a blower 2 is provided on the upper part of the smoke evacuation device main body 1, and in order to forcibly bend the flow 4 of oily smoke sucked into the inside 3 of the smoke evacuation device main body by the blower 2. A plurality of buttfuls 6 are arranged on the inner wall 5. When the oil smoke passes through the inside 3 of the smoke evacuation device body, the buttful 6 and the internal wall 5 of the smoke evacuation device main body
The fats and oils adhering to the smoke evacuation device are removed by spouting a cleaning liquid from a cleaning nozzle 7 disposed inside the main body 3 of the smoke exhaust device. Note that when not cleaning, the cleaning liquid is stored in a cleaning liquid reservoir 8 provided at the bottom of the main body of the smoke evacuation device, and during cleaning, the cleaning liquid is heated by a heater 9 provided in the cleaning liquid reservoir 8 and then pumped through a pump 10. Recycle and reuse. by the way,
Even though the cleaning liquid has sufficient ability to dissolve fat and oil, it is very uneconomical to replace the cleaning liquid when cleaning every time cooking. Estimated to be about 2g in a typical household, calculate the time to replace the cleaning liquid by calculating from the oil and fat soluble ability of the cleaning liquid used, and use a timer etc. to perform cleaning once a day. ), and when it reaches the time for replacement, the discharge and supply of the cleaning liquid can be controlled. However, the amount of oil and fat contained in the oil smoke generated during actual cooking varies greatly depending on the type of food and amount of cooking.Of course, the amount of oil and fat that adheres to the inside of the smoke evacuation device body, including the buttful, also varies from hamburger steak (approx.
130g (8 pieces) is 0.22g, steak (about 130g
6 sheets), the weight is 2.42g, which is very different. For this reason, when cooking with a small amount of fat and oil contained in the generated oil smoke, or when cooking is done infrequently, the cleaning liquid that still has the ability to dissolve fat and oil is discharged, which is very uneconomical. In the opposite case, a problem arises in that the use of a cleaning liquid that exceeds the limit of its ability to dissolve oil and fat causes oil and fat to re-adhere to the internal walls and bubbles of the smoke evacuation device main body, resulting in a reduction in the cleaning function.

Purpose of the invention The present invention focuses on the above problems, and
The main purpose of this system is to improve economic efficiency by cleaning the inside of the smoke exhaust system according to the amount of oil and fat that adheres to it.

Structure of the Invention The smoke evacuation device of the present invention includes a blower that is disposed on the upper part of the smoke evacuation device body and sucks out oily smoke etc. generated during cooking, and a blower that is installed in multiple stages in the flow direction of the oily smoke that passes through the inside of the smoke evacuation device main body. A plurality of baffles are provided to forcibly bend the flow of the oil smoke, and a cleaning liquid is disposed in these directions to remove oil and fat adhering to the inner wall of the smoke evacuation device main body and the buffles. a plurality of cleaning nozzles, a cleaning liquid reservoir provided at the bottom of the smoke evacuation device body and having a cleaning liquid supply means and a discharge means so as to be filled with cleaning liquid only during cleaning; a piping route connecting the cleaning liquid reservoir and the cleaning nozzles; It consists of a light emitting part, a photosensitive part, and a detection part configured as a part of the buffer, and the light from the light emitting part is transmitted or reflected to the detection part and reaches the photosensitive part. The amount of oil and fat is detected so that the cleaning liquid reaches a preset oil-soluble ability and the cleaning time, and the cleaning liquid is supplied to the cleaning liquid reservoir and jetted from the cleaning nozzle, and after cleaning, the cleaning liquid is discharged from the cleaning liquid reservoir. The device is equipped with an oil adhesion detection section. As a result, it is possible to determine whether the cleaning liquid has reached its fat-soluble ability and when to clean based on the amount of oil and fat deposited, and also to discharge the cleaning liquid from the cleaning liquid reservoir after cleaning.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. In FIG. 3, reference numeral 15 indicates the main body of the smoke evacuation device, 16 indicates a cleaning liquid reservoir provided at the bottom of the main body 15 of the smoke evacuation device and is filled with cleaning liquid 17 only during cleaning, and 18 indicates a cleaning liquid suction port 19 through a pump. A piping path that guides the cleaning liquid 17 to a plurality of cleaning nozzles 21, 20 a cleaning liquid supply pipe that is linked by a solenoid valve or the like and supplies tap water from a water pipe to the cleaning liquid reservoir 16, and 22 a cleaning liquid supply pipe that is connected to the inner wall 23 of the smoke evacuation device main body. A blower (not shown) placed on the upper part of the smoke evacuation device body forcibly bends the flow of oil smoke drawn from the intake port 24, and 25 is a light emitting device such as a high-intensity red LED inside. comprising an element 26;
Detection unit 2 having transparency such as glass in a part of the outer frame
A light emitting section 7 is provided and supported by a baffle 22, and a light emitting section 28 is provided with a photosensitive element 29 such as a phototransistor inside, and has a detecting section 30 having transparency such as glass in a part of the outer frame. This is a photosensitive section supported by the baffle 22 so as to face the photosensitive section 25.
The light emitting section 25, the detecting sections 27 and 30, and the photosensitive section 28 form an oil adhesion detecting section. 31
A cleaning liquid discharge pipe is installed below the cleaning liquid reservoir 16 and discharges the cleaning liquid via a solenoid valve 32. A heater 33 is installed at the bottom of the cleaning liquid reservoir 16 and raises the temperature of the cleaning liquid. The overall structure of the smoke evacuation device, including the blower and pump, is the same as the conventional structure shown in FIGS. 1 and 2.

To explain the operation of the above structure, oily smoke generated during cooking is sucked in from the intake port 24 by the blower and passes through the inside of the smoke evacuation device main body 15. At this time,
Inside the main body of the smoke evacuation device, the flow of oil smoke is forcibly bent by each bend 22, and the oil particles contained in the smoke are caused by the inertial force to bend against the surface of each bend 22 and the inner wall 22 of the smoke evacuation device main body. Because they collide and adhere to each other, the oil smoke from which the oil and fat content has been removed is exhausted. At this time, the detecting parts 27 and 30 provided in the Batsuful 22 are also attached with oil and fat corresponding to the amount of fat in the oil smoke, and therefore the light emitting element 26 is transferred to the detecting parts 27 and 30.
The intensity of the light that passes through the sensor 30 and reaches the photosensitive element 29 decreases in accordance with the amount of oil and fat attached to the detection parts 27 and 30. This is detected by the photosensitive element 29, and the time to clean can be detected. In other words, the detection unit 2
First, the sensitivity of the photosensitive element 29 is adjusted to a certain range within the oil and fat solubility of the cleaning liquid based on the correlation between the amount of light that passes through the filters 7 and 30 and reaches the photosensitive element 29, and the amount of oil and fat that adheres to the detection parts 27 and 30. By setting this, it is possible to detect when it is time to clean.

Next, the operation sequence will be explained with reference to FIG. 4. When the blower is operated during normal cooking, the cleaning liquid 17 does not exist in the cleaning liquid reservoir 16. After the cooking is finished, the amount of oil and fat currently adhering to the inside of the smoke evacuation device main body 15 approaches the oil and fat solubility of the cleaning liquid, and the oil adhesion detection unit determines whether it is time to clean. Cleaning liquid supply pipe 2
After tap water flows in from 0 and detergent is automatically added (the detergent injection device is not shown), when the heater 33 is energized and the cleaning liquid 17 reaches a predetermined temperature, the pump starts and the detergent is automatically added through the piping route 18. Each cleaning nozzle 21
Cleaning liquid is spouted out and cleaning is performed. During this cleaning, the surfaces of the detection parts 27 and 30 of the oil adhesion detection part are exposed to the cleaning liquid jetted from the cleaning nozzle 21 towards them, or the cleaning liquid jetted from the cleaning nozzle 21 provided above and flowing down the inner wall of the smoke evacuation device main body 15. It is then washed with a cleaning solution that removes any oil or fat that may have adhered to it, returning it to its initial state. When the cleaning is completed, the cleaning liquid is discharged from the cleaning liquid discharge pipe 31, and the series of cleaning steps is completed. Therefore, since cleaning is performed when necessary, there is no wastage in the consumption of detergent and the power consumption required for the cleaning liquid including the heater and pump, etc., and it is very economical. It is no longer necessary to keep the cleaning liquid in the cleaning liquid storage section 16, and the problem of bad odor emitted from the used cleaning liquid and corrosion of the cleaning liquid reservoir section 16 is solved.

In this embodiment, the detection sections 27 and 30 are made of glass plates, which are part of the outer frame of the light emitting section 25 and the photosensitive section 28. For example, the light emitting part and the photosensitive part may be provided on the same side to detect the reflected light. A similar effect can also be obtained with a material that allows light to pass through in a mesh pattern.

Effects of the Invention As is clear from the above embodiments, the smoke evacuation device of the present invention is equipped with an oil adhesion detection section consisting of a light emitting section, a photosensitive section, and a detection section, and the smoke evacuation device allows oil smoke to pass through the detection section. By installing it inside the main body, it is possible to detect when the amount of oil adhering to the inside of the smoke evacuation device reaches the oil-soluble ability of the cleaning liquid and clean it when necessary. Saves electricity and detergent. In addition, by doing this, there is no need to keep the cleaning liquid in the cleaning liquid reservoir at all times, and if it is done as in the embodiment, the problem of bad odor from the cleaning liquid stored in the reservoir and corrosion of the cleaning liquid reservoir can be solved. It is something that can be done.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a conventional smoke evacuation device, Fig. 2 is a sectional view of the same side, Fig. 3 is a sectional view of essential parts showing an embodiment of the smoke evacuation device of the present invention, and Fig. 4 shows the operating order. FIG. 22...Batsuful, 25...Light emitting part, 27,3
0...Detection section, 28...Photosensitive section.

Claims (1)

[Claims] 1. A blower is installed at the top of the smoke evacuation device to suck up oily smoke generated during cooking, and a blower is installed in multiple stages in the direction of the flow of the oily smoke that passes through the inside of the smoke evacuation device to force the flow of this oily smoke. a plurality of buttfuls bent in a direction, a plurality of cleaning nozzles arranged to eject a cleaning liquid in these directions in order to remove oil and fat adhering to the inner wall of the smoke evacuation device main body and the buttful; and a smoke evacuation device main body. A cleaning liquid reservoir part provided at the bottom of the housing and having a cleaning liquid supply means and a cleaning liquid discharge means so as to be filled with cleaning liquid only during cleaning, a piping route connecting this cleaning liquid reservoir part and a cleaning nozzle, a light emitting part, a photosensitive part and a part of the bubble. It consists of a detection section configured to transmit or reflect light from the light emitting section to the detection section and reach the photosensitive section, so that the amount of light reaching the photosensitive section can be used to adjust the oil and fat solubility of the cleaning liquid set in advance. The exhaust system is equipped with an oil adhesion detection unit that detects the amount of oil and fat so as to judge the arrival time and cleaning time, supply the cleaning liquid to the cleaning liquid reservoir, spray the cleaning liquid from the cleaning nozzle, and discharge the cleaning liquid from the cleaning liquid reservoir after cleaning. smoke device.