JPH09271622A - Water filter type oil component removing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To decompose an oil component collected into a water tank by oils and fats decomposing bacteria to remove the same to prevent the oil component from adhering to the inner wall of the tank or a water level sensor. SOLUTION: In a water filter type oil component removing apparatus constituted so as to float an oil component in exhaust gas filtered and collected by water filters 5, 7 on water in a water tank 4 to collect the same, a bacteria supply means 10 supplying oils and fats decomposing bacteria to the water tank 4 is provided and the oil component in the water tank 4 is decomposed and removed by oils and fats decomposing bacteria supplied from the bacteria supply means 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water filter type oil removing device which is installed in a range hood part of a kitchen or the like to remove oil, odor and hot air in exhaust gas, and more specifically, a water filter type oil removing device. The present invention relates to a water filter type oil removal device in which oil that is captured and collected in a water tank is decomposed and removed by oil-degrading bacteria.

[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. 10 shows the structure 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 body 1 to a suction duct 2 of a range hood such as a kitchen, and has an intake port formed along the longitudinal direction at an intermediate position in the vertical direction of the side surface. 3, a water tank 4 provided below the intake port 3, and a water tank 4 that hangs downward from the inside of the vicinity of the upper edge of the intake port 3, the lower end of which is lower than the lower edge of the intake port 3. It is composed of a water film forming plate 5 reaching the lower part, and a guide plate 6 provided in a water tank 8 for making an upward water flow inside the water film forming plate 5 and curved upward in an arc shape. ing.

On the lower edge of the water film forming plate 5, a large number of inverted V-shaped or inverted U-shaped voids 6 for forming a water filter by a water film are formed in a comb tooth shape. In addition,
8 is a flow straightening plate for adjusting the flow of exhaust gas, 9 is a water tank 4
It is an overflow pipe for draining the excess when the water level inside exceeds the regulation.

The conventional water filter type oil removing device described above removes oil, odor and heat from 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 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 4. Is sucked in. At this time, the inflowing air A flows into the water tank 4 at a high speed through the gap 6 formed in the lower edge of the water film forming plate 5, so that the water near the lower edge of the water film forming plate 5 is Vigorously stirred,
The agitated water rises along the guide plate 6 arranged from below the water film forming plate 5 to above the water film forming plate 5 to generate a large number of bubbles inside the water film forming plate 5. As a result,
A water film W as shown in FIG. 8 is formed in the space 7 of the water film forming plate 5.
A water filter is formed.

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

[0007]

In the case of the water filter type oil removing device as described above, dust such as oil collected and filtered by the water filter remains floating and collected in the water in the water tank 4. It is in a state. For this reason, these dusts, particularly oil, adhere to the inner wall of the tank, a water level sensor (not shown), and the like, causing a failure of the device.

Generally, in a water filter type oil removing device,
In order to dispose of waste such as oil accumulated in the water tank 4 to the outside as soon as possible, operate the drain pipe connected to the lower bottom of the water tank 4 so that the water tank 4 can be discharged every morning or night or at regular intervals. Although a predetermined amount or the whole amount of the water in the container is discharged and the water is replaced, the oil content once attached cannot be removed, and it is necessary to clean the inside of the device at regular intervals.

However, as can be seen from the above description, since this type of water filter type oil removing device is directly attached to the suction duct 3 in the range hood, it can be easily removed and cleaned by an amateur. It was difficult and I had to resort to a specialized vendor. For this reason, there has been a problem that the maintenance cost becomes large and the gas range in the kitchen cannot be used during that time.

In addition, when a shake occurs due to an earthquake,
The water in the water tank may overflow, but in this case when cooking oil under the range hood, if the overflowed water enters an oil pan etc., the oil will scatter and the cook will get burned. There were problems such as covering and sometimes a fire. Further, there is a problem that the noise is great when the fan sucks the air, which is offensive to the cook.

The present invention has been made in order to solve the above-mentioned problems, and the oil component collected in the water tank is decomposed and removed by oil-degrading bacteria, and the oil component is used as an inner wall of the tank or a water level sensor. A water filter type oil removal device that prevents the water in the water tank from overflowing even when it shakes due to an earthquake, etc. The purpose is to provide.

[0012]

In order to solve the above problems, the present invention employs the following means. That is,
The invention according to claim 1 supplies oil-decomposing bacteria to the water tank in a water filter-type oil removal device in which the oil content in the exhaust filtered by a water filter is floated on water in the water tank to be collected. Providing bacteria supply means,
The oil-decomposing bacteria supplied from the bacteria supplying means decomposes and removes the oil content in the water tank.

With such a structure, the oil component collected in the water tank can be decomposed by the oil-degrading bacteria. The decomposed oil is deposited on the bottom of the water tank and accumulated, so that the oil does not drift to water and adhere to the inner wall of the tank or the water level sensor as in the conventional case.

The invention according to claim 2 is the invention according to claim 1, further comprising a bubble generating means for sending air into the water in the water tank.

In the case of such a constitution, aerobic fat-and-oil-decomposing bacteria dissolved in water in the water tank can be activated, and the oil-decomposing efficiency can be further enhanced.

According to a third aspect of the present invention, in addition to the first aspect of the invention, the bacteria supply means is provided in a water tank.

With such a structure, the volume of the entire apparatus can be reduced and the appearance of the apparatus can be made simple and beautiful.

Further, in the invention according to claim 4, in the invention according to claim 1, a drain pipe is provided on the lower bottom surface of the water tank, and the water in the water tank is discharged to the outside by the drain pipe. It was done.

With such a structure, when the water in the water tank is discharged through the drainage pipe, together with the discharge of this water, the decomposed product of the oil that has settled and accumulated on the bottom bottom of the tank is also discharged. Therefore, cleaning of the inside of the tank can be eliminated.

According to a fifth aspect of the present invention, in addition to the first aspect of the present invention, a folded piece is formed at the opening of the water tank, and an air suction port is opened at the tip of the folded piece. is there.

With this structure, the water in the water tank does not overflow due to shaking due to an earthquake or the like, so that water does not enter the pan during cooking and a burn or fire occurs to the cook. It is possible to prevent the noise and reduce the noise of air suction by the fan.

Further, in the invention of claim 6, in the invention of claim 6, the air suction port formed in the folded piece is formed as a long hole, and a burr portion is formed downward.

With such a structure, even if the water in the water tank is shaken, it is difficult for the burr to come out above the air suction port, and the air suction noise is muted, so that noise can be further prevented. It can be done.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show an example of an embodiment of a water filter type oil removal device according to the present invention. FIG. 1 is a side sectional view of a main part of a range hood portion to which a water filter type oil removing device of the present invention is attached, and FIG. 2 is a schematic structural view of the entire system. The same or corresponding parts as those of the conventional water filter type oil removing device (FIG. 7) described above are designated by the same reference numerals.

In FIGS. 1 and 2, the portions indicated by reference numerals 1 to 9 have the same structure as the above-described conventional water filter type oil removing device. The water filter type oil removal device of the present invention supplies the oil and fat decomposing bacteria for decomposing the oil component mixed in the water in the water tank to the lower bottom surface of the water tank 4 in this conventional water filter type oil removal device. For this purpose, a bacteria supply device 10 is attached.
The detailed structure of the bacteria supply device 10 will be described later.

Reference numeral 11 is a water level sensor provided in the water tank 4, 12 is a range hood attached to the ceiling of the gas range, and 13 is a filter such as glass fiber provided at the inlet of the suction duct 2. A drain pipe 14 is provided on the lower bottom surface of the water tank 4, and the water in the water tank 4 can be discharged to the outside through a discharge pipe 16 by opening and closing an electromagnetic valve 15. The overflow pipe 9 is also connected to the discharge pipe 16 and discharges overflowed water.

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 by opening and closing the electromagnetic valve 18. Reference numeral 19 is a water supply faucet, 20 is a control panel containing a control circuit for controlling the entire system, 21 to 23 are signal lines connecting the control panel 20 and each electric component, and 24 is a power outlet.

3 to 5 show a concrete structure of the bacteria supply device 10 provided on the lower bottom surface of the water tank 4. 3 is a front view of the bacteria supply device, FIG. 4 is a side view thereof, and FIG. 5 is a longitudinal sectional view thereof.

In the bacteria supplying apparatus 10 of the illustrated example, a cloth bag 27 containing oil-decomposing bacteria powder is enclosed in a case 26 having punch holes 25 for water passage and ventilation on the entire peripheral surface. Cloth bag 2 containing this oil and fat degrading bacterial powder
The case 26 enclosing the case 7 is lifted from the lower bottom surface of the water tank 4 by a predetermined height by the left and right foot portions 28, and a bubble generating tube 29 is provided in the space formed on the lower surface of the case. . The bubble generating tube 29 is connected to an external air pump (not shown) through the air introducing tube 30, and the compressed air is sent from the air pump to generate bubbles from the peripheral surface of the bubble generating tube 29. The oil-degrading bacteria that decompose oil are aerobic, and can be more activated by sending in air.

The cloth bag 27 containing the oil / fat-decomposing bacterial powder is enclosed in the case 26 to prevent the cloth / bag 27 from floating on the water surface of the water tank 4 since the oil-decomposing bacterial powder is lighter than water. This is because. If the cloth bag 27 containing the oil-and-oil-decomposing bacteria floats on the water surface, the oil-and-oil-decomposing bacteria powder may not be easily dissolved in water, and the cloth bag floating on the water surface may interfere with the oil collecting operation of the water filter.

FIG. 6 shows a specific structure of the water level sensor 11 provided in the water tank 4. In the figure, 41
Is a cylindrical cylindrical sensor case with a bottom, 42 is a float, and the float 42 is loosely fitted in the sensor case 41,
An upper stopper 43 and a lower stopper 44 formed on the outer circumference of the case are vertically movable.

In the sensor case 41, an upper reed switch 45 for detecting the maximum water level and a lower reed switch 46 for detecting the minimum water level are filled with resin 47 or the like and built in water honey. The vertical installation interval between the upper reed switch 45 and the lower reed switch 46 is set to a distance corresponding to the difference in water level between when the water tank 4 to which the sensor is attached is full and when it is dry.

On the other hand, a ring-shaped magnet 8 is attached to the inner peripheral surface of the float 42 that moves up and down, and when the float 42 moves up and down according to the fluctuation of the water level,
Upper reed switch 45 on the side facing the magnet 48
Alternatively, the lower reed switch 46 is configured to be turned on by its magnetic force. Reference numeral 49 is a code for extracting contact signals of the lead switches 45 and 46. The cord 49 is connected to the signal line 23 in FIG. The part formed by the sensor case 41 and the float 42 described above is hereinafter referred to as a sensor body.

The sensor body consisting of the sensor case 41 and the float 42 is housed in a cylindrical outer case 51, and by fixing the sensor case 41 to the ceiling of the outer case 51, the sensor body and the outer case 51 are separated from each other. It is integrated. A water injection nozzle 52 is provided on the peripheral wall portion of the outer case 51 near the upper end, and an inlet / outlet port 53 is formed in the lower bottom portion of the outer case 51.
A water flow diffusion plate 54 having a large number of water spray holes 54a is provided below 2, and an air vent hole 55 is provided at a peripheral wall portion below the water flow diffusion plate 54.

Next, the operation of the water filter type oil removing device of the present invention having the above structure will be described. Incidentally, the operation of collecting the oil component in the exhausted air by the water filter is exactly the same as the conventional water filter type oil content removing device described above, so the description thereof is omitted and the water in the water tank is collected. Only the operation of decomposing the mixed oil component with the oil-decomposing bacteria and discharging it to the outside and the water level detecting operation of the water level sensor will be described.

First, the operation of decomposing and discharging the oil by the oil-degrading bacteria will be described. The oil-decomposing bacteria powder packed in the cloth bag 27 of the bacteria supply device 10 attached to the lower bottom surface of the water tank 4 leaks out little by little through the cloth, and passes through the punch holes 25 formed in the case 26 to pass through the water tank. Dissolve in the water in 4. Therefore, the fat-and-oil-decomposing bacteria are dissolved in the water in the water tank 4 at a predetermined concentration.

In addition, the air introducing pipe 3 is connected to the bubble generating pipe 29.
Compressed air is sent from an external air pump (not shown) through 0, and this air is actively generated as bubbles from the entire circumference of the bubble generation tube 29. Therefore, the oil-decomposing bacteria dissolved in water are activated by this air, and the oil-decomposing efficiency is in a good state.

In the above-mentioned state, when the oil content in the exhaust gas that is now collected by the water filter mixes with the water in the tank, the oil-degrading bacteria contained in the water decompose the mixed oil content. This decomposed oil component settles on the bottom of the tank. Therefore, unlike the conventional case, the collected oil does not float and float on the water surface of the water tank 4. Therefore, the oil collected by the water filter does not adhere to the inner wall of the tank or the sensor 11 to pollute the inside of the water tank.

The oil component decomposed by the oil-degrading bacteria sinks and accumulates on the lower bottom of the water tank 4. Since this precipitate no longer has oily properties,
There is no such thing as sticking to the bottom of the tank.

When the operation panel 20 is operated at regular intervals (for example, every morning or every night) to open the solenoid valve 15 and drain the water in the tank through the drain pipe 14, the water is accumulated at the bottom of the tank. The decomposed product is sucked out together with water and discharged to the outside through the discharge pipe 16.

The amount of water in the water tank 4 decreases due to the discharging operation, and when the water level reaches a preset minimum water level, the water level sensor 11 detects this and operates the operation panel as described later. Then, the electromagnetic valve 18 is opened and new water is automatically supplied from the water supply pipe 17 until a predetermined water level is reached. Therefore, the water in the water tank 4 is always kept clean,
Unlike the conventional water filter type oil removal device, the water in the water tank 4 will not be contaminated with oil over time.

Since the water drained as described above contains a large amount of oil-degrading bacteria,
It is also possible to decompose the oil component of the downstream equipment, for example, the sewer that is poured through the water discharge pipe 16, and it is possible to contribute to the prevention of environmental pollution.

Next, the water level detecting operation of the water level sensor 11 will be described. When the solenoid valve 18 is opened by the operation panel 20, water is supplied from the water supply pipe 17. This water is
As shown in FIG. 6, water is injected from the water injection nozzle 52 of the water level sensor 11 into the outer case 51. Then, the injected water W is jetted downward through the water spray holes 54 a of the water flow diffusion plate 54 as shown by the arrow in FIG. 6, and is injected into the outer case 51.

When water is poured into the outer case 51 as described above, the water level in the outer case 51 tries to rise by the amount of the water that has been poured, but the outer case 51 has an air vent hole 55 and an inlet / outlet port. Since the port 53 is formed, the water in the outer case 51 and the water in the outer water tank 4 can freely flow in and out through the inlet / outlet port 53. Therefore, the water level in the outer case 51 quickly equilibrates with the water level outside through the inlet / outlet port 53, and becomes the same water level.

When the water level in the water tank 4 rises due to the water injection and the float 42 reaches the position of the upper reed switch 45, the upper reed switch 45 is turned on in response to the magnetic force of the magnet 8. This switch on
It is sent to the operation panel 20 through the code 49 and the signal line 23,
The electromagnetic valve 18 is closed and the water supply is stopped. On the contrary, when the water level in the water tank 4 decreases and the float 42 reaches the position of the lower reed switch 46,
The lower reed switch 46 is turned on in response to the magnetic force of the magnet 48. This switch-on is sent to the operation panel 20 through the code 49 and the signal line 23, the electromagnetic valve 17 is opened, and water supply is started.

As described above, the water level in the water tank 4 is always maintained between the upper reed switch 45 which gives the maximum water level and the lower reed switch 46 which gives the minimum water level.

When the water level sensor 11 is used,
Dust such as oil floating near the water surface L cannot enter the outer case 51 through the inlet / outlet port 53 that is submerged at a predetermined depth position below the water surface. Therefore, the inside of the outer case 11 is always maintained in a clean state.

Further, the water injected from the water injection nozzle 52 is diffused by the water flow diffusion plate 54 and poured into the outer case 51, so that the water flow causes the outer surfaces of the sensor case 41 and the float 42 and the inner surface of the outer case 51. It is washed away and the inside of the sensor is automatically washed. Therefore, the adhesion of dirt to the sensor body is prevented.

Further, the outer case 51 is connected to the outside by an inlet / outlet port 53 formed in the lower bottom part thereof and an air vent hole 55 formed in the upper end of the case. Therefore, if the hole diameters of the inlet / outlet port 53 and the air vent hole 55 are set to appropriate sizes, and the amounts of air and water entering and exiting are appropriately regulated, as shown in FIG. Even if it is hit and shakes up and down, it is possible to cancel this fluctuation and smooth the water surface inside the case. Therefore, even if the water surface L in the water tank 4 sways up and down, the water surface in the outer case 51 does not fluctuate up and down, and an accurate water level can always be detected.

FIGS. 7 to 9 show another embodiment. In this embodiment, the folding pieces 41 are integrally formed on both opening edges in the longitudinal direction of the water tank 4 in a forward tilted state. In addition, a long hole 41a is formed in a portion ⅔ from the tip side of the folded piece 41, and a downwardly extending burr portion 41b is formed at the opening edge of the long hole 41a.

As described above, by forming the folding piece 41 on the opening edge of the water tank 4 in the longitudinal direction, even if the water in the water tank 4 shakes due to shaking such as an earthquake, the folding piece 41 is formed.
The water will not be overflowed from the water tank 4 due to being returned to the inside by the water tank 4. Therefore, even during cooking, the water will enter the oil pan and the cook may get burned or cause a fire. It never happens.

Further, the water surface of the water tank 4 is folded back into a piece 41.
Even if the air is almost covered with, the long hole 41a is formed, so that the air can be easily sucked and the noise due to the air generated during the suction can be reduced. Further, since the burr portion 41b is formed downward in the elongated hole 41a, even if the water greatly shakes and travels along the lower surface of the folding piece 41 and reaches the elongated hole 41b, the burr portion 41b causes the elongated hole 41a to escape from the elongated hole 41a. It does not overflow.

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 according to the gist of the invention.

[0054]

As described above, according to the first aspect of the invention, the oil component in the exhaust gas filtered and filtered by the water filter is floated on the water in the water tank and collected. In the removing device, a bacteria supply means for supplying the oil-decomposing bacteria to the water tank is provided, and the oil-decomposing bacteria supplied from the bacteria supplying means decomposes and removes the oil component in the water tank. The oil component collected in the can be decomposed by oil-degrading bacteria. Therefore, the oil collected in the water tank is prevented from floating on the water and adhering to the inner wall of the tank, the water level sensor, or the like, and it is possible to prevent a device failure or the like due to the oil adhering.

According to the second aspect of the invention,
Since the air bubble generating means for sending air into the water in the water tank is provided, the aerobic oil-degrading bacteria mixed with the water in the water tank can be activated. Therefore, the decomposition efficiency of oil can be further increased, and the performance of the device can be improved.

Further, according to the invention of claim 3,
Since the bacteria supply means is provided in the water tank, the volume of the entire device can be reduced. Therefore, the device can be downsized, and the appearance of the device can be made simple and beautiful.

Further, according to the invention of claim 4, a drainage pipe is provided on the lower bottom surface of the water tank, and the water in the water tank is discharged to the outside by the drainage pipe. When the water in the tank is discharged, the decomposed product of oil that has settled on the bottom of the tank can also be discharged. Therefore, cleaning of the inside of the tank can be eliminated, and the cost and labor required for maintenance can be reduced.

According to the invention of claim 5,
Since a folding piece is formed at the opening of the water tank, even if the water surface in the water tank is greatly shaken by shaking such as an earthquake, it is returned to the inside of the water tank by the folding piece and water or a drop on the cooking part There is no. Therefore, the cook does not get burned or a fire occurs.

Further, according to the invention of claim 6, since the air suction port (long hole) is formed at the tip end side of the folded back piece, it is possible to reduce the generation of noise when the air is sucked by the fan. Even if the water inside the water tank reaches the oblong hole through the folding piece, the burr part will not be offensive to the cooks, and the burr is formed on the lower surface of the oblong hole. It has an effect such as being returned to.

[Brief description of drawings]

FIG. 1 is a side sectional view of an essential part of a range hood part to which a water filter type oil removal device of the present invention is attached.

FIG. 2 is a cross-sectional view of the entire system including the water filter type oil removal device portion.

FIG. 3 is a front view of a bacteria supply device.

FIG. 4 is a side view of the bacteria supply device.

FIG. 5 is a vertical cross-sectional view of the bacteria supply device.

FIG. 6 is a vertical sectional view of a water level sensor.

FIG. 7 is a cross-sectional view of the entire system according to another embodiment.

FIG. 8 is a partial plan view of the folding piece in the above.

FIG. 9 is a sectional view taken along line AA of the above.

FIG. 10 is a schematic perspective view of a conventional water filter type oil removal device.

FIG. 11 is an explanatory view of an oil collecting operation in the water filter type oil removing device.

[Explanation of symbols]

 1 Device Main Body 2 Suction Duct 3 Intake Port 4 Water Tank 5 Water Film Forming Plate 6 Guide Plate 7 Void 8 Rectifying Plate 9 Overflow Pipe 10 Bacteria Supply Device 11 Water Level Sensor 12 Range Hood 14 Drain Pipe 15 Solenoid Valve 16 Water Discharge Pipe 18 Solenoid Valve 20 Operation Panel 25 Punch Hole 26 Case 27 Cloth Bag Containing Oil and Fat Decomposing Bacteria Powder 29 Bubble Generating Tube 41 Folding Piece 41a Long Hole 41b Burr Part

Claims (6)

[Claims] 1. A water filter type oil removal device, wherein oil in exhaust gas filtered and filtered by a water filter is floated on water in a water tank to collect the oil and fat-degrading bacteria to the water tank. A water filter type oil removal device, characterized in that the oil content in the water tank is decomposed and removed by means of oil-degrading bacteria supplied from the bacteria supply means. 2. The water filter type oil removal device according to claim 1, further comprising bubble generating means for sending air into the water in the water tank. 3. The water filter type oil removal device according to claim 1, wherein the bacteria supply means is provided in a water tank. 4. A drainage pipe is provided on the lower bottom surface of the water tank,
The water filter type oil removal device according to claim 1, wherein water in the water tank is discharged to the outside by the drain pipe. 5. The water filter type oil removing device according to claim 1, wherein a folded piece is formed at an opening of the water tank, and an air suction port is opened at a tip side of the folded piece. 6. The water filter type oil removal device according to claim 5, wherein the air suction port formed in the folded piece is formed as a long hole and has a burr portion formed downward.