JP6485772B2 - Gas purification device and method of operating the gas purification device - Google Patents

Description

  The present invention relates to a gas purification device for purifying a gas containing impurities such as oil and an operation method of the gas purification device.

  2. Description of the Related Art Conventionally, there is known a device that collects smoke discharged from impurities such as oil, for example, oil smoke generated from kitchen equipment such as a frying food cooker (fryer) and discharges it to the outdoors.

  The apparatus has a problem that a large amount of impurities such as vaporized oil and dust contained in the flue gas adhere to the inside of the hood and the exhaust duct, which is unsanitary and causes fire spread in a fire. In addition, since the apparatus directly discharges the smoke to the outdoors, there is a problem that the odor diffuses and pollutes the surrounding environment.

  Therefore, the present inventors have proposed an air purification device that can remove impurities such as oil contained in the flue gas (see Patent Document 1).

FIG. 2 shows a cross-sectional view of an example of the air purification device described in Patent Document 1.
The air purifying apparatus 1 shown in FIG. 2 communicates with an intake chamber 5 into which contaminated air is introduced via a first communication port 14 formed below the intake chamber 5, and from the first communication port 14. A bubble chamber 6 in which bubbling plate members 16, 17, 18 having a large number of small holes are arranged at a higher position, a second communication port 19 formed below the bubble chamber 6, and a third formed above. A septic tank 3 having a three-tank structure having a sewage storage chamber 7 communicating through a communication port 20 is provided.
Moreover, the air purification apparatus 1 described in FIG. 2 includes an exhaust member 4 connected to an exhaust port 26 provided in the sewage storage chamber 7.

  In the case of the air purification device 1 shown in FIG. 2, when the exhaust member 4 is operated in a state where water is stored in the septic tank 3, the septic tank is introduced from the intake port 10 provided in the intake chamber 5 by the suction action of the exhaust member 4. Contaminated air is sucked into 3. The contaminated air is introduced into the water in the intake chamber 5, moves from the first communication port 14 to the valve chamber 6, passes through the bubbling plate members 16, 17, 18, and is purified. The waste water storage chamber 7 is passed through the three communication ports 20 and discharged from the exhaust port 26.

  Meanwhile, in the case of the air purification device 1 shown in FIG. 2, the sewage that has become an emulsion due to the impurities separated from the contaminated air in the bubble chamber 6 is absorbed into the second chamber by the suction action of the exhaust member 4. It flows into the sewage storage chamber 7 from the communication port 19. The sewage flowing into the sewage storage chamber 7 is drained from an overflow pipe 23 provided in the sewage storage chamber 7 during operation of the exhaust member 4.

  However, in the air purification device 1 shown in FIG. 2, the inside of the sewage storage chamber 7 is in a negative pressure state due to the suction action of the exhaust member 4, and external air and water flow back through the overflow pipe 23. Since the sewage cannot be drained smoothly, there is a problem that the contaminated air cannot be purified efficiently.

FIG. 3 shows a cross-sectional view of another example of the air purification device described in Patent Document 1.
The air purification apparatus described in FIG. 3 includes a purification tank 3 having a two-tank structure in which the sewage storage chamber 7 is omitted in the air purification apparatus described in FIG.
3 includes an exhaust member 4 (not shown) connected to an exhaust port 36 provided in the bubble chamber 6. The air purifier illustrated in FIG.

  In the case of the air purification device shown in FIG. 3, when the exhaust member 4 is operated in a state where water is stored in the septic tank 3, the septic tank 3 is introduced from the intake port 10 provided in the intake chamber 5 by the suction action of the exhaust member 4. Contaminated air is sucked into and introduced into the water. The contaminated air moves from the communication port 14 to the valve chamber 6, passes through the bubbling plate members 16, 17 and 18, is purified, and then discharged from the exhaust port 36.

  By the way, in the case of the air purification apparatus described in FIG. 3, in the bubble chamber 6, the sewage that has become emulsion due to the impurities separated from the contaminated air is discharged from an overflow pipe (not shown) provided in the bubble chamber 6. Drained.

  However, also in the case of the air purifying apparatus shown in FIG. 3, the inside of the bubble chamber 6 is in a negative pressure state due to the suction action of the exhaust member 4, and external air and water flow back through the overflow pipe, Since sewage cannot be drained smoothly, there is a problem that the contaminated air cannot be purified efficiently.

  Patent Document 1 describes that a trap is provided in the overflow pipe to prevent backflow of air. However, even when a trap is provided in the overflow pipe, the exhaust member 4 has a strong suction action. The reverse flow of the air cannot be completely prevented, and there is room for further improvement in order to improve the purification efficiency of the contaminated air.

On the other hand, in the air purification apparatus 1 shown in FIG. 2, the patent document 1 is provided with an electrode sensor for detecting the sewage water level in the sewage storage chamber 7, and the electromagnetic valve opening / closing control accompanying the ON operation of the electrode sensor It is described that the sewage is drained from a distribution pipe 24 provided at the bottom of the sewage storage chamber 7.
However, when an electrode sensor is provided, there is a possibility that the electromagnetic valve malfunctions due to the oil contained in the sewage adhering to the electrode sensor, and the air is not necessarily purified efficiently.

Japanese Patent No. 4336890

  Therefore, the present invention provides a gas purification device capable of efficiently purifying contaminated gas by preventing backflow of external air and water from the overflow pipe, and an operating method of the gas purification device. Objective.

In order to achieve the above object, the present invention provides:
It has a purification part that separates impurities such as oil from the gas by introducing gas into the liquid, and the purification part has an intake port for sucking gas and an exhaust port for exhausting the gas after separating the impurity A gas purification device formed,
A gas purifier having a liquid supply member for supplying a liquid to the purifying section and an overflow pipe for discharging a liquid containing impurities separated from the gas from the purifying section and having an exhaust section connected to the exhaust port In the device
While providing an opening / closing valve in the overflow pipe, it comprises a detecting means for detecting that the liquid level in the purifying section is above a predetermined height above the opening of the overflow pipe,
During the operation of the exhaust section, gas is sucked into the purification section from the intake port by the exhaust action of the exhaust section, and impurities are separated by introducing the gas into the liquid. The separated gas is sucked and exhausted from the exhaust port, while the liquid supply member continuously supplies the same amount of liquid per unit time of the overflow pipe to the purifier as the detection means. By opening the on-off valve based on the detection of the liquid level by the above, the liquid level in the purification unit contains impurities separated from the gas in the purification unit while maintaining the liquid level in the purification unit above a predetermined height above the opening of the overflow pipe The liquid is discharged from the overflow pipe.
Here, in the present invention, the liquid level detected by the detection means is a height of a liquid level that reaches after the overflow pipe is filled with the liquid from the opening to the position of the on-off valve in the purification unit.

The present invention
After the separation unit separates the impurities, the purification unit has an intake chamber in which an intake port for sucking the gas is formed, a purification chamber for separating impurities such as oil from the gas by introducing the sucked gas into the liquid An exhaust chamber in which an exhaust port for exhausting the gas is formed,
The liquid supply member is disposed in the intake chamber, and the overflow pipe is disposed in the exhaust chamber.
The purification chamber is a plate-like member having a large number of small holes, and a bubbling member having substantially the same dimensions as the horizontal section of the purification chamber is disposed in a substantially horizontal state, while the exhaust section is in operation. The liquid is stored so that the gas introduced into the liquid passes through the small hole of the bubbling member in the liquid,
The purification chamber communicates with the intake chamber via a first communication port formed below the bubbling member, and is formed above the bubbling member so as to allow gas to pass therethrough and the bubbling. It is preferable to communicate with the exhaust chamber through a third communication port formed below the member.

The present invention
The detection means is a timer, and it is preferable to detect that the liquid level in the purification unit is above a predetermined height above the opening of the overflow pipe based on the passage of time set in the timer.

In order to achieve the above object, the present invention provides:
It has a purification part that separates impurities such as oil from the gas by introducing gas into the liquid, and the purification part has an intake port for sucking gas and an exhaust port for exhausting the gas after separating the impurity A gas purification device formed,
A gas purifier having a liquid supply member for supplying a liquid to the purifying section and an overflow pipe for discharging a liquid containing impurities separated from the gas from the purifying section and having an exhaust section connected to the exhaust port In the operation method of the device,
While providing an opening / closing valve in the overflow pipe, it comprises a detecting means for detecting that the liquid level in the purifying section is above a predetermined height above the opening of the overflow pipe,
During the operation of the exhaust section, gas is sucked into the purification section from the intake port by the exhaust action of the exhaust section, and impurities are separated by introducing the gas into the liquid. The separated gas is sucked and exhausted from the exhaust port, while the liquid supply member continuously supplies the same amount of liquid per unit time as the discharge amount of the overflow pipe to the purification section, and the overflow pipe Is filled with the liquid for a certain length from the opening , and after the detecting means detects that the liquid level in the purifying section is a predetermined height above the opening of the overflow pipe, the liquid level by the detecting means of the discharge of the liquid from the overflow pipe by opening the on-off valve to start based on the detection, maintains the liquid level in the purification unit at a predetermined height above the opening of the overflow pipe One of the liquid containing the separated impurities from the gas by the purifying unit, characterized in that the discharge from the overflow pipe.

The gas purification device of the present invention comprises a detection means for detecting that the liquid level in the purification section is above a predetermined height above the opening of the overflow pipe, while providing an opening / closing valve in the overflow pipe. During operation of the wind part, the exhaust action by the exhaust part causes the gas to be sucked into the purification part from the intake port, and the impurities are separated by introducing the gas into the liquid, thereby separating the impurities. The subsequent gas is sucked and exhausted from the exhaust port, while the liquid supply member continuously supplies the same amount of liquid as the discharge amount per unit time of the overflow pipe to the purification unit, and the liquid by the detection means By opening the on-off valve based on the detection of the position, the liquid containing impurities separated from the gas in the purification unit while maintaining the liquid level in the purification unit above a predetermined height above the opening of the overflow pipe is opened. Sequentially discharged from those filled in serial overflow pipe.
Therefore, according to the gas purification apparatus of the present invention, it is possible to prevent backflow of external air and water from the overflow pipe, and thus it is possible to efficiently purify contaminated gas.

Further, according to the operation method of the gas purification apparatus of the present invention, when the exhaust air unit is in operation, a gas is sucked and introduced into the purification unit from the intake port by the exhaust action of the exhaust unit, and the gas is contained in the liquid. The impurities are separated by introducing the gas, and the gas after the impurities are separated is sucked and exhausted from the exhaust port, while the liquid supply member is supplied with the same amount of liquid as the discharge amount per unit time of the overflow pipe. Supplying continuously to the purifying section, the detection that the overflow pipe is filled with the liquid for a certain length from the opening and the liquid level in the purifying section is a predetermined height above the opening of the overflow pipe after the unit detects the ejection of the liquid from the overflow pipe by opening the on-off valve to start based on detection of the liquid level by the detection means, the over-the liquid level in the purification unit Discharging a liquid containing than the opening of the low tube was separated from the gas by the purifying unit while maintaining upward predetermined height impurities from the overflow pipe.
Therefore, according to the operation method of the gas purification apparatus of the present invention, it is possible to prevent the backflow of external air and water from the overflow pipe, and thus it is possible to efficiently purify contaminated gas.

Sectional drawing of the gas purification apparatus in embodiment of this invention. Sectional drawing of the gas purification apparatus described in patent document 1. FIG. Sectional drawing of the other gas purification apparatus described in patent document 1. FIG.

Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a cross-sectional view of a gas purification device in an embodiment of the present invention.
The gas purification apparatus 101 in the embodiment of the present invention includes a purification unit 110 and an air exhaust unit 150. In addition, the gas purification device 101 according to the embodiment of the present invention includes a timer that detects that the liquid level in the exhaust chamber 140 described later is above a predetermined height above the opening of the overflow pipe 145.

  The purification unit 110 includes an intake chamber 120 that sucks gas into the purification unit 110, a purification chamber 130 that separates impurities such as oil from the sucked gas, and exhausts the gas after separating the impurities from the purification unit 110. An exhaust chamber 140 is provided.

  The intake chamber 120 communicates with the purification chamber 130 through a first communication port 131 formed in the lower portion. The purification chamber 130 communicates with the exhaust chamber 140 through a second communication port 141 formed at the upper portion and a third communication port 142 formed at the lower portion.

The intake chamber 120 is provided with an intake port 121 and a supply pipe 122 for supplying liquid into the intake chamber 120. In addition, an exhaust pipe 144 is formed in the exhaust chamber 140, and an overflow pipe 145 provided with an on-off valve 147 made of an electromagnetic valve or the like is disposed so as to extend upward from the bottom surface.
Here, the opening of the overflow pipe 145 is set to a height that can maintain a state in which the separation and removal of impurities such as oil from gas are effectively performed in the purification chamber 130, as will be described later.

On the bottom surface of the purification chamber 130, a water distribution pipe 146 provided with an open / close valve 148 made of an electromagnetic valve or the like is disposed.
Here, the bottom surface of the purification chamber 130 is formed to be lower than the bottom surfaces of the intake chamber 120 and the exhaust chamber 140, and the opening of the water pipe 146 is provided at a low position on the bottom surface. It is preferable when draining the liquid in the purification unit 110.

  In the purification chamber 130, a gas guide plate 132 that protrudes in the horizontal direction is formed at the upper edge of the first communication port 131. Above the gas guide plate 132, three bubbling members 133, 134, and 135, which are plate-like members having many small holes and have substantially the same dimensions as the horizontal section of the purification chamber 130, are substantially horizontal. It is arranged in the state.

  In the purification chamber 130, a first liquid scattering prevention plate 136 is disposed above the bubbling member, and a second liquid scattering prevention plate is disposed above the first liquid scattering prevention plate 136 and below the second communication port 141. 137 is formed. A gas rectifying plate 138 is disposed at the second communication port 141.

  Here, the purification chamber 130 has a structure in which three layers of bubbling members 133, 134, and 135 are disposed. However, one or two layers may be disposed, and four or more layers may be disposed. It is good also as a structure.

  The air exhaust unit 150 includes an air exhauster 151 such as a fan. A suction port 152 of the exhaust fan 151 is connected to an exhaust port 144 formed in the exhaust chamber 140 of the purification unit 110.

  The gas purification apparatus 101 according to the embodiment of the present invention supplies the liquid into the intake chamber 120 from the liquid supply pipe 122 prior to the operation of the exhaust fan 151, and performs the purification through the first communication port 131. The bubbling members 133, 134, and 135 disposed in the chamber 130 store the liquid in the purification unit 110 so that all of the bubbling members 133, 134, and 135 are at the liquid level h 0 that is submerged in the liquid. At that time, the on-off valve 147 of the overflow pipe 145 and the on-off valve 148 of the water distribution pipe 146 are both closed.

  After detecting that the liquid level in the purifying section 110 has reached h0, the exhaust fan 151 is operated, and the exhaust air of the exhaust fan 151, that is, the suction force of the exhaust fan 151 causes the intake air. Gas is sucked and introduced into the intake chamber 120 through the port 121.

  Simultaneously with the operation of the exhaust fan 151, supply of the same amount of liquid as the discharge amount per unit time of the overflow pipe from the liquid supply pipe 122 is started. The liquid supply from the liquid supply pipe 122 is continuously performed while the exhaust fan 151 is in operation.

Further, the timer is operated simultaneously with the operation of the exhaust fan 151. The timer calculates the time from when the exhaust fan 151 is operated until the liquid level hx in the exhaust chamber 140 reaches a liquid level hx above the opening of the overflow pipe 145 in advance by a test operation or the like in advance. By setting to the above, it has a function as a means for detecting the liquid level hx in the exhaust chamber 140.
Here, in the embodiment of the present invention, the liquid level hx is the height of the liquid level reached after the overflow pipe 145 is filled with the liquid from the opening to the on-off valve 147 in the exhaust chamber 140. .

  The gas sucked and introduced into the intake chamber 120 by the suction force of the exhaust fan 151 is introduced into the liquid stored in the bottom of the intake chamber 120 and moves into the purification chamber 130 from the first communication port 131. To do. Then, the gas that has moved to the purification chamber 130 rises after being guided to the central side of the purification chamber 130 by the gas guide plate 132, and a large number of small holes of the bubbling members 133, 134, and 135 in the liquid. Pass upward.

  At this time, as shown in the drawing, a large amount of small-diameter bubbles are generated from the entire surface of the bubbling members 133, 134, and 135, and the refined liquid is scattered in a mist form. Therefore, the gas and the liquid can be brought into close contact (increase the contact area), and impurities such as oil are effectively separated and removed from the gas.

  Thereafter, the gas separated and purified by the impurities moves from the second communication port 141 to the exhaust chamber 140 by the suction force of the exhaust fan 151 and is sucked and exhausted from the exhaust port 144. At this time, the liquid scattered in the purification chamber 130 is prevented from being scattered toward the second communication port 141 by the first liquid scattering prevention plate 136 and the second liquid scattering prevention plate 137. The gas purified by separating the impurities is rectified by the gas rectifying plate 138 disposed in the second communication port 141 and moved to the exhaust chamber 140.

  On the other hand, the liquid containing impurities separated from the gas moves from the third communication port 142 to the exhaust chamber 140 by the suction force of the exhaust fan 151. Then, by controlling the opening / closing valve 147 of the overflow pipe 145 based on the detection of the liquid level hx in the exhaust chamber 140 by the timer, the liquid containing impurities separated from the gas is allowed to flow into the overflow pipe 145. Sequentially discharged from those that meet

  At that time, while the exhaust fan 151 is in operation, since the same amount of liquid as the discharge amount per unit time of the overflow pipe is continuously supplied from the liquid supply pipe 122, the liquid level in the exhaust chamber 140 is increased. Can be continuously discharged from the overflow pipe 145 while maintaining the liquid level hx above the opening of the overflow pipe 145 at a predetermined height.

  Therefore, according to the gas purification apparatus in the embodiment of the present invention, it is possible to prevent the backflow of external air or water from the overflow pipe 145, and thus it is possible to efficiently purify the contaminated gas.

  In the embodiment of the present invention, a timer is used as means for detecting the liquid level hx in the exhaust chamber 140, but other detection means such as a float sensor may be used. Further, the overflow pipe may be arranged so as to extend into the exhaust chamber 140 from a side surface instead of from the bottom surface of the exhaust chamber 140.

  In the present invention, the purifying unit 110 is not limited to the structure shown in FIG. 1, but may have any other structure as long as impurities such as oil can be separated from the gas by introducing a contaminated gas into the liquid. It doesn't matter. For example, in the gas purification apparatus 101 shown in FIG. 1, the exhaust chamber 140 may be omitted and an overflow pipe may be provided in the purification chamber 130. In that case, an exhaust port 144 may be formed in the purification chamber 130, and the suction port 152 of the exhaust fan 151 may be connected to the exhaust port 144. Further, the intake chamber 120 may be omitted together.

  The gas purification apparatus of the present invention is effective in purifying not only polluted air such as oil smoke generated from a kitchen but also any gas such as exhaust gas from a factory.

  Needless to say, the configuration of the gas purification device of the present invention is not limited to the above-described embodiment, and can be changed as appropriate without departing from the scope of the present invention.

  According to the gas purification device and the operation method of the gas purification device of the present invention, it is possible to prevent the backflow of external air and water from the overflow pipe, and thus have extremely high practical value.

101 Gas Purification Device 110 Purification Unit 120 Intake Chamber 121 Intake Port 122 Supply Pipe 130 Purification Chamber 131 First Communication Port 132 Gas Induction Plate 133 Bubbling Member 134 Bubbling Member 135 Bubbling Member 136 First Liquid Spattering Prevention Plate 137 Second Liquid Spattering Prevention plate 138 Gas rectifier plate 140 Exhaust chamber 141 Second communication port 142 Third communication port 144 Exhaust port 145 Overflow pipe 146 Water distribution pipe 147 On-off valve 148 On-off valve 150 Exhaust part 151 Exhaust unit 152 Suction port h0 Exhaust unit operation start liquid Hx Overflow start liquid level

Claims (4)

It has a purification part that separates impurities such as oil from the gas by introducing gas into the liquid, and the purification part has an intake port for sucking gas and an exhaust port for exhausting the gas after separating the impurity A gas purification device formed,
A gas purifier having a liquid supply member for supplying a liquid to the purifying section and an overflow pipe for discharging a liquid containing impurities separated from the gas from the purifying section and having an exhaust section connected to the exhaust port In the device
While providing an opening / closing valve in the overflow pipe, it comprises a detecting means for detecting that the liquid level in the purifying section is above a predetermined height above the opening of the overflow pipe,
During the operation of the exhaust section, gas is sucked into the purification section from the intake port by the exhaust action of the exhaust section, and impurities are separated by introducing the gas into the liquid. The separated gas is sucked and exhausted from the exhaust port, while the liquid supply member continuously supplies the same amount of liquid per unit time of the overflow pipe to the purifier as the detection means. By opening the on-off valve based on the detection of the liquid level by the above, the liquid level in the purification unit contains impurities separated from the gas in the purification unit while maintaining the liquid level in the purification unit above a predetermined height above the opening of the overflow pipe A gas purifier for discharging liquid from the overflow pipe. The purification unit includes an intake chamber in which an intake port for sucking the gas is formed, a purification chamber for separating impurities such as oil from the gas by introducing the sucked gas into the liquid, and after separating the impurities An exhaust chamber in which an exhaust port for exhausting the gas is formed,
The liquid supply member is disposed in the intake chamber, and the overflow pipe is disposed in the exhaust chamber.
The purification chamber is a plate-like member having a large number of small holes, and a bubbling member having substantially the same dimensions as the horizontal section of the purification chamber is disposed in a substantially horizontal state, while the exhaust section is in operation. The liquid is stored so that the gas introduced into the liquid passes through the small hole of the bubbling member in the liquid,
The purification chamber communicates with the intake chamber via a first communication port formed below the bubbling member, and is formed above the bubbling member so as to allow gas to pass therethrough and the bubbling. The gas purification device according to claim 1, wherein the gas purification device communicates with the exhaust chamber via a third communication port formed below the member.   The detection means is a timer, and detects that the liquid level in the purifier is above a predetermined height above the opening of the overflow pipe based on the passage of time set in the timer. The gas purification apparatus as described. It has a purification part that separates impurities such as oil from the gas by introducing gas into the liquid, and the purification part has an intake port for sucking gas and an exhaust port for exhausting the gas after separating the impurity A gas purification device formed,
A gas purifier having a liquid supply member for supplying a liquid to the purifying section and an overflow pipe for discharging a liquid containing impurities separated from the gas from the purifying section and having an exhaust section connected to the exhaust port In the operation method of the device,
While providing an opening / closing valve in the overflow pipe, it comprises a detecting means for detecting that the liquid level in the purifying section is above a predetermined height above the opening of the overflow pipe,
During the operation of the exhaust section, gas is sucked into the purification section from the intake port by the exhaust action of the exhaust section, and impurities are separated by introducing the gas into the liquid. The separated gas is sucked and exhausted from the exhaust port, while the liquid supply member continuously supplies the same amount of liquid per unit time as the discharge amount of the overflow pipe to the purification section, and the overflow pipe Is filled with the liquid for a certain length from the opening , and after the detecting means detects that the liquid level in the purifying section is a predetermined height above the opening of the overflow pipe, the liquid level by the detecting means of the discharge of the liquid from the overflow pipe by opening the on-off valve to start based on the detection, maintains the liquid level in the purification unit at a predetermined height above the opening of the overflow pipe One operating method of the gas purifying device for discharging a liquid containing the separated from the gas in purifier impurities from the overflow pipe.

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