JPH10156124A - Water filter control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To consider such a countermeasure that, when an air component collected with a water filter catches fire, the fire does not spread to a ceiling part of a cooking room from a sucking duct of a range hood, in a water filter type oil component removing device. SOLUTION: A first water feed means for replenishing city water to keep a fixed quantity of water in a water tank 4 at a normal operational time, is provided and a second water feed means for feeding a large quantity of city water at a fire extinguishing operational time is provided, and a water discharge device 14 is provided in the water tank to discharge it outside. The water discharge device 14 is provided with a first overflow discharge means provided at a first water level and a second overflow discharge means at a second water level higher than the first water level. At a normal operation time, water discharge work is performed by the first overflow water discharge means, and water filter is maintained at an opened state, while at a fire extinguishing operation time, water discharge work is performed with the second overflow water discharge means, and the water filter is closed by utilizing ascending of the water level.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of decomposing oil, which is installed in a range hood or the like of a kitchen, in which oil, odor, hot air, etc. in exhaust gas is floated in a water tank through a water filter to collect oil. More particularly, the present invention relates to a water filter type oil removing device which is decomposed and removed by bacteria, and more particularly to a water filter type in which a drainage device is provided in the water tank to discharge water in the water tank to the outside. The present invention relates to an oil removing device.

[0002]

2. Description of the Related Art In a kitchen such as a restaurant, a hotel, a restaurant, or a food processing plant, a large amount of oil, odor, or hot air is generated. I try to exhaust it outside. Conventionally, a water filter type oil removing device has been known as a filter device for efficiently removing such oil, odor and hot air.

FIG. 5 shows a configuration of a conventional water filter type oil removing device (Japanese Patent Laid-Open No. 7-31823). This water filter type oil removing device is used by directly attaching the device main body 1 to a suction duct 2 of a range hood such as a kitchen, and has an intake port formed along a longitudinal direction at a vertical intermediate position on a side surface. 3, a water tank 4 provided below the intake port 3, and a water tank 4 which is suspended downward from the inside near the upper edge of the intake port 3, and the lower end thereof is
A water film forming plate 5 reaching below the lower edge of the water film forming plate 5, and a guide plate curved in an upwardly arcuate shape provided in the water tank 4 to create an upward water flow inside the water film forming plate 5. 6 is comprised.

At the lower edge of the water film forming plate 5, a large number of inverted V-shaped or U-shaped voids 7 for forming a water filter using a water film are formed in a comb-like shape. In addition,
8 is a flow straightening plate for adjusting the flow of exhaust gas, 9 is a water tank 4
This is an overflow drain for draining excess water when the water level in the inside exceeds the specified level.

[0005] The conventional water filter type oil removing device described above removes oil, odor and heat in the exhausted air as shown in FIG. That is, when a fan (not shown) provided in the suction duct 2 is driven, the inside of the duct becomes a negative pressure, so that the air A flows from the intake port 3 provided on the side of the apparatus body 1 to the water tank. It is sucked in 4.

At this time, the inflowing air A flows into the water tank 4 at a high speed through the gap 7 formed at the lower edge of the water film forming plate 5. Is violently stirred, and the stirred water rises along the guide plate 6 arranged from below to inside and above the water film forming plate 5 to generate many bubbles inside the water film forming plate 5. Let it. As a result, a water filter composed of the water film W as shown in FIG. 6 is formed in the space 7 of the water film forming plate 5.

Therefore, the air A flowing from the intake port 3
When passing through the water film W, the particles P such as oil and odor contained in the air are removed into the water, and the vigorously bubbling water becomes partly mist-like, deprives the heat, Cool the air you want. The air A thus purified by passing through the water film W rises along the guide plate 6 and escapes from the water tank 4, is sent out to the suction duct 2 through a gap with the current plate 8, and Is discharged to

Then, as shown in FIG. 7, the water level is kept constant by the cooperation of a drain pipe 9 installed in the water tank and a water level sensor 11 which detects the water level in the water tank and has a water supply function. It is like that. Reference numeral 10 denotes a bacteria supply device for supplying oil-decomposing bacteria into the water tank to decompose the oil collected in the water tank.

[0009]

However, in the case of the water filter type oil removing device as described above, the refuse such as oil which has been sieved and caught by the water filter floats on the water in the water tank 4 and remains collected. It is in the state of. For this reason,
If a fire in the kitchen ignites these debris, especially oil, a fan (not shown) provided in the suction duct 2
Since a stronger air flow flows from the intake port 3 to the suction duct 2 of the range hood via the water tank 4, there is a possibility that a fire may come around the ceiling of the cooking chamber in a short time, which is extremely dangerous.

The present invention has been made in order to solve such a problem, and a fire igniter which ignites oil by an air flow generated by a fan of a suction duct 2 of a range hood for installing an oil removing device in a water tank. The object of the present invention is to provide a water filter type oil removing device in which measures are taken so as not to go around the ceiling of the cooking room.

[0011]

Means for Solving the Problems In order to solve the above-mentioned problem, the means adopted in the water filter type oil removing device according to the present invention is to float the oil in the exhaust gas to the water in the water tank via the water filter. During normal operation, a first water supply means is provided to collect and supply a large amount of tap water so as to exceed the predetermined amount during a fire extinguishing operation. While a second water supply means for supplying is provided, a drainage device is provided in the water tank as the water drainage device to discharge water in the water tank to the outside, and the drainage device is provided at a first water level. A first overflow drainage means and a second overflow drainage means provided at a second water level are provided, and during a normal operation, the first overflow drainage means performs a drainage operation on the fixed amount of water to perform the water drainage. Maintained in a state of opening the filter, at the time of fire extinguishing operation is intended to subject matter to close the water filter while performing drainage operation to water exceeding the predetermined amount by the second overflow drainage means.

[0012] The drainage pipe may include a funnel-shaped main body, and the first overflow drainage means may include a plurality of drainage holes formed in a peripheral wall of the funnel-shaped main body. Preferably, the second overflow drainage means includes an upper opening of the funnel-shaped main body.

It is preferable that the drain device has a drain pipe in the water tank.

According to a fourth aspect of the present invention, there is provided means for supplying oil-decomposing bacteria into the water tank so that oil and fat decomposed by the bacteria and water are discharged by a drain device having the drain pipe. It is desirable to configure.

Further, as set forth in claim 5, the drainage pipe and the drainage device have a water introduction part which is located below the water level in the water tank and can be opened and closed by using tap water by a timer, and It is preferable that a drain pipe is installed on a side surface of the drain tank to discharge water in the water tank to the outside.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an example of an embodiment of a water filter type oil removing device according to the present invention. FIG. 1 is a schematic structural view of an entire system to which a water filter type oil removing device of the present invention is attached. The same or corresponding parts as those of the conventional water filter type oil removing device described above (FIGS. 5 and 6) are denoted by the same reference numerals.

In FIG. 1, portions indicated by reference numerals 1 to 11 have basically the same configuration as the above-mentioned conventional water filter type oil removing device.

Further, reference numeral 12 denotes a range hood attached to the ceiling of the gas range, and reference numeral 13 denotes a filter made of glass fiber or the like provided at the entrance of the suction duct 2. And
An overflow drainage device 14 is installed below the water level in the water tank 4, and the drainage pipe 9 is connected to the drainage device 14 and extends from the inside of the tank 4 to the outside.

In the tank 4, the drain pipe 9 has a water inlet 9a formed on the side opposite to the drain side. The water in the water tank 4 can be discharged to the outside through the drain pipe 9 by opening and closing the water introduction section 9a through a control device using a timer as described later. That is, since the drainage pipe 9 is connected to the overflow drainage device 14, the overflowed water is discharged and the water level in the tank is kept constant.

On the other hand, a water supply pipe 17 is connected to the water level sensor 11, and water is supplied to the water tank 4 through the water level sensor 11 in accordance with the water level in the tank 4. This detailed operation is described above. Since it is as described in Japanese Patent Application No. 7-31823, the description is omitted. A control unit 18 supplies water to the water tank 4 and supplies water to the overflow drainage device 14 and a fire prevention sprinkler 30 described later.

The overflow drainage device 14 is shown in FIG.
As shown in the figure, the main body 14a has a substantially funnel shape, and a lid 14b is provided on the upper part thereof via a leg 14c.
a. A plurality of drainage ports 14d are formed in the peripheral wall of the main body, and are arranged at a first water level substantially at the same level. The funnel-shaped main body 14a is open at a second water level higher than the first water level.

One end of the water distribution pipe 9 is formed with a water introducing portion 9a which can be freely opened and closed. A closing lid member 9b is rotatably supported in the vicinity of the water introducing portion 9a. The opening 9a is attached so as to close the opening 9a, as shown by the arrow. A driving cylinder 15 is provided above the closing lid 9b. In the cylinder 15, a piston rod 15a is driven by tap water supplied from a tap water supply source to be described later, and presses a closing lid member 9b which normally closes the water introduction section 9a, thereby pressing the piston 2a in FIG. It is rotated to the position indicated by the dashed line and opened.

Therefore, water is supplied by being operated by a timer of an operation panel 20 provided in association with the control unit 18 at regular time intervals (for example, every morning or every night). Will be described.

The control unit 18 is provided with a distributor 22 for temporarily storing tap water supplied from a water pipe 21, and pipes 23, 24, 25, and 26 extend therefrom. Solenoid valves 18a and 18b are provided in the pipe 23,
4, a solenoid valve 18c and a drip valve 18d are respectively provided in series. Further, the tube 25 has a drip valve 18e.
However, the pipe 26 is provided with an electric ball valve 18f.
The pipe 23 branches between the solenoid valve 18a and the solenoid valve 18b, and one is connected as a pipe 17 to a water level sensor, and the other is connected as a pipe 27 to the cylinder 15.

During normal operation, that is, when the operation of collecting oil, dust and the like by generating intake air by a fan of a suction duct in a range hood and passing a strong air current through a water filter is continued, the electromagnetic valve 18a is connected to the solenoid valve 18a. The solenoid valve 18b is closed and no tap water is supplied from the pipe 23. During this time, the surface of the water in the water tank is wavy under the influence of the strong air flow A, so that the water is drained little by little from the drain port 14d of the overflow drainage device 14, so that the water level gradually drops.

Then, the water level sensor 11 detects this and sends a signal to the control panel 20 to open the drip valve 18e to supply tap water to raise the water level in the water tank 4 to return it to a predetermined level. During this time, the solenoid valves 18a and 18b are closed and tap water is not supplied to the pipe 27, so that the water introduction portion 9a of the water distribution pipe 9 is closed by the action of the spring 9c by the closing lid member 9b.

In the water tank 4, the timer operates to open the solenoid valve 18 a and drain water is supplied to the cylinder 15 through the pipe 27 for drainage work performed at regular intervals. In this case, the spring 9c of the closing lid member 9c is used.
The spring force is set so that the lid member 9c is rotated and opened by the water pressure of the tap water supplied to the cylinder 15.
As a result, the water in the water tank is transferred from the water introduction section 9a to the drain pipe 9
The decomposed matter discharged to the outside via the tank and accumulated in the lower bottom of the tank is also sucked out together with the water and discharged to the outside.

The water level sensor 11 detects a predetermined minimum level of the water level in the water tank 4 and sends a signal to the control panel 20 to close the electromagnetic valve 18a and open the electromagnetic valve 18b. At the same time, the solenoid valves 18c and 18d open the tank and supply water through the pipe 17 to return to the predetermined level. At this time, since the solenoid valve 18b is open as described above, the water flow in the pipe 17 causes the pipe 27 to have a negative pressure. For this reason,
The spring 9c is a piston rod 15 of the driving cylinder 15.
The lid member 9a is released from the force of a, and rotates counterclockwise in FIG. 2 by the force of the spring 9c to take the position indicated by the solid line, and closes the water introduction portion 9a.

In the meantime, the water level in the tank is
Water is automatically supplied with fresh water until a predetermined water level is reached. For this reason, the water in the water tank 4 is always kept clean, and the water in the water tank 4 is not contaminated with oil over time unlike the conventional water filter type oil removing device.

Since the water drained as described above contains a large amount of fat-decomposing bacteria, downstream equipment, such as a grease trap or sewer oil, which is poured through the water pipe 9 is also used. It can be decomposed, the load for sewage treatment can be reduced, and the efficiency of environmental pollution prevention can be improved.

As described above, during normal operation, since the solenoid valves 18a and 18b are both closed, the cylinder 15
The piston rod 15a does not affect the action of the spring 9c, and the lid member 9b closes the water inlet. Therefore, in this state, the water in the water tank is not discharged.

As described above, during normal operation, the water level in the water tank 4 is reduced by a plurality of drain ports 14 d on the peripheral wall of the drain device 14.
Level (first water level), which is shown in FIG.
As shown in the figure, the water filter oil removing device 1 corresponds to a position substantially at the same level as the comb tooth-shaped space 7 formed at the lower edge of the water film forming plate 5 of the water filter oil removing device 1. When the fan (not shown) in the suction duct 2 is driven at this water level as described above, the inside of the duct becomes negative pressure, and the air A rapidly flows out of the water tank 4 from the intake port 3 through the gap 7. It escapes and is sent out to the suction duct 2 from the gap with the current plate 8.

In this configuration, if the oil on the water surface in the water tank 4 is ignited, there is a danger that the fire will be thrown into the airflow A and the hand of the fire will fall on the ceiling of the cooking chamber in a short time. The operation function will be described.

A temperature sensor 28 is mounted at an appropriate position on the ceiling of the range hood 12. The temperature sensor 28 sends a signal to the control panel 20 of the control unit 18 when the temperature of the water in the water tank 4 rises by igniting the oil on the surface of the water in the water tank 4 in the event of an increase. The operated electric ball valve 18f is opened. As a result, a large amount of tap water in the distributor 22 is supplied to the sprinkler 30 via the pipe 29, and the sprinkler 30 sprays water into the water tank 4 to lower the temperature in the tank.

The size of the overflow drainage capacity of the drainage port 14d of the drainage device 14 is set so as not to exceed the amount of tap water supplied by the sprinkler 30. Therefore, the water in the water tank does not overflow from the drain port 14d, and the water level further rises to the upper opening formed at the second water level at the upper edge of the funnel-shaped drainage device 14, and overflows there, so that the water level rises. Stops at that position. In this case, the lid 14b covers the opening of the drainage device so that the watering of the watering nozzle 31 closest to the overflow drainage device 14 is not discharged from above the overflow drainage device 14 to the outside. As a result, the water level in the tank rises quickly.

The stop position of the rise of the water level is set higher than the position of the gap 7 formed at the lower end edge of the water film forming plate 5, so that the gap 7 is submerged as shown in FIG. The water filter is closed by water. As a result, air A no longer flows into the water tank. Therefore, even if the oil in the water tank is ignited, the hands of the fire are raised and do not quickly reach the ceiling of the cooking chamber.

In this state, the temperature in the water tank is lowered by tap water sprinkled by the sprinkler 30, and the ignited fire is extinguished. When the temperature decreases to a predetermined temperature, the signal from the temperature sensor 28 receives a signal, and the control panel operates to close the electric ball valve 18f and stop supplying water to the sprinkler 30.

Although the embodiments of the present invention have been described above, the present invention is not limited to these, and various modifications can be made in accordance with the gist of the present invention.

[0039]

As described above, according to the first aspect of the present invention, the oil component in the exhaust gas is collected by floating on the water in the water tank via the water filter. During normal operation, the first water supply means is provided so as to maintain a constant amount of water in the water tank, and during the fire extinguishing operation, the second water supply means for supplying a large amount of tap water so as to exceed the predetermined amount is provided. A drain device is provided in the water tank to discharge water in the water tank to the outside, and the drain device is provided with a first overflow drain device provided at a first water level and a second overflow drain device provided at a second water level. During normal operation, the first overflow drainage means performs a draining operation on the fixed amount of water to maintain the water filter open, and during a fire extinguishing operation, the second overflow drainage means. -While the water filter is closed while the water is being drained by the drainage means, the strong airflow generated by the fan of the suction duct does not circulate to the ceiling via the water tank, so the inside of the water tank is Even if the oil is ignited, the hands of the fire do not roll around the ceiling.

According to the second aspect of the present invention, the drainage device comprises a funnel-shaped main body, and
The overflow drainage means includes a plurality of drainage holes formed in the peripheral wall of the funnel-shaped main body, and the second overflow drainage means is configured to include the upper opening of the funnel-shaped main body. By providing two drainage means in the same device, it became possible to easily control the water filter.

According to the third aspect of the present invention, since the drainage device has a drainage pipe in the water tank, the space above the cooking place can be widened and the cooking operation is performed. The cook's hat does not hit the drain and hinder cooking.

According to the fourth aspect of the present invention, a means for supplying oil-decomposing bacteria is provided in the water tank, and the oil and fat decomposed by the bacteria are discharged by the drain device having the drain pipe. The space outside the water tank, which was previously occupied by the drain pipe, can be increased, and the possibility of ignition is reduced because the oil that has been collected in the water tank is decomposed by bacteria. Contribute to let.

According to a fifth aspect of the present invention, the drain pipe and the drainage device are located below the water level in the water tank and have a water introduction portion that can be opened and closed by using tap water by a timer. In addition, since a drain pipe is provided on the side of the drain tank and the water in the water tank is discharged to the outside, the drain can be quickly drained without the need for a pump or the like.

[Brief description of the drawings]

FIG. 1 is an overall front view of a water hood type oil removing device of the present invention attached to a range hood.

FIG. 2 is a front view of a drainage device in a water tank of the water filter type oil removing device.

FIG. 3 is a sectional view of the water filter type oil removing device during operation of a water filter portion.

FIG. 4 is a cross-sectional view showing a state where the water level of the water filter of FIG.

FIG. 5 is a perspective view of a water tank and a range hood of a conventional water filter type oil removing device.

6 is a sectional view of the water filter of the water filter type oil removing device of FIG. 5 during operation.

7 is an overall front view of a different conventional example in which the water filter type oil removing device of FIG. 5 is improved.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Device main body 2 Suction duct 3 Intake port 4 Water tank 5 Water film formation plate 6 Guide plate 7 Void 8 Rectifier plate 9 Drain pipe 9a Water introduction part 9b Water introduction part closing lid member 12 Range hood 14 Overflow drainage device

Claims (5)

[Claims] 1. An oil component in exhaust gas is floated on water in a water tank via a water filter and collected, and as a means for supplying the water, the water in the water tank is maintained at a constant amount during normal operation. In the fire extinguishing operation, a first water supply means is provided, and a second water supply means for supplying a large amount of tap water so as to exceed the predetermined amount is provided. On the other hand, a water discharge device is provided in the water tank as the water discharge means. The water in the tank is discharged to the outside, and the drainage device is provided with a first overflow drainage device provided at a first water level and a second overflow drainage device provided at a second water level. Draining operation for the certain amount of water by overflow drainage means and maintaining the water filter open,
A water filter control device, wherein during the fire extinguishing operation, the water filter is closed while the second overflow drainage means performs a drainage operation on water exceeding the predetermined amount. 2. The drainage device includes a funnel-shaped main body, the first overflow drainage means includes a plurality of drainage holes formed in a peripheral wall of the funnel-shaped main body, and the second overflow drainage means includes a funnel-shaped main body. The water filter control device according to claim 1, comprising an upper opening of the main body. 3. The water filter control device according to claim 1, wherein the drain device has a drain pipe in the water tank. 4. The water tank according to claim 3, further comprising means for supplying oil-decomposing bacteria into the water tank, wherein the oil and water decomposed by the bacteria are discharged by a drain device having the drain pipe. Water filter control device. 5. The drain pipe and the drain device are located below a water level in a water tank, have a water inlet and outlet that can be opened and closed using tap water by a timer, and have a drain pipe on a side surface of the drain tank. The water filter control device according to claim 4, wherein the water filter control device is installed to discharge water in the water tank to the outside.