JP2009008275A - Range hood and filter cleaning method in range hood - Google Patents

Abstract

A filter contaminated with oil smoke or the like of a range hood is automatically and efficiently cleaned.
In a water tank 8 in which warm water is stored by driving a pump 12, a filter 6 is rotated at a low speed so that oil adhering to the filter 6 is released into the water tank 8, and then water and oil in the water tank 8 are drained. The valve 14 is opened and discharged, and then the pump 12 is driven while rotating the filter 6 at high speed to inject water from the injection nozzle 9 to separate the oil and dust adhering to the filter 6, and together with the water tank Eject outside 8 and clean filter 6.
[Selection] Figure 3

Description

  The present invention relates to filter cleaning of a range hood used in a home kitchen, and relates to a range hood that performs highly efficient and reliable cleaning, and a filter cleaning method in the range hood.

  BACKGROUND ART Ventilators called range hoods that purify hot air and oil smoke generated during cooking in a kitchen as the house becomes highly airtight and discharge it outdoors have become widespread.

  This range hood is equipped with a porous material, for example, a metal mesh filter, to purify the exhausted air, but as the range hood is used, oil and dust adhere to the filter and provide ventilation performance. And the noise of the exhaust fan increases.

  For this reason, it was necessary for the user to periodically remove the filter from the range hood body and wash it with water.

  Since this work is complicated and the hands are soiled, it is desired that the filter can be automatically washed. As a response to this demand, for example, the one shown in Patent Document 1 is proposed. ing.

In Patent Document 1, a septic tank is provided at the lower part of a filter (purifying unit), and the filter is washed while rotating the filter in the septic tank.
JP 2000-213784 A

  However, such a method has a problem that sufficient cleaning performance cannot be obtained.

  That is, there is a problem that the oil adhering to the filter in a liquid state can be removed relatively easily, but the oil adhering to the solid with the dust is difficult to remove.

  This invention solves such a conventional subject, and provides the filter washing | cleaning method in the range hood which can remove the oil adhering to solid form with dust in a short time, and a range hood. It is aimed.

  In order to solve the above problems, the range hood and the filter cleaning method in the range hood according to the present invention rotate the filter at a low speed for a predetermined time in a state where a part of the filter is immersed in the stored water tank, and then the water tank. The drained water is drained to the outside of the water tank, and then the water is sprayed to the filter while rotating the filter at a high speed for a predetermined time. Next, the filter is rotated at a predetermined high speed. It is something that lasts for hours.

  Thereby, the cleaning power of the filter can be increased. Further, the cleaned filter is made to ventilate the filter with an exhaust fan while rotating at high speed, so that the filter can be dried quickly.

  ADVANTAGE OF THE INVENTION According to this invention, the oil adhering to solid form with the dust adhering to a filter can be removed in a short time, and the filter washing | cleaning method in a range hood and a range hood with a high filter washing | cleaning effect can be provided.

  The range hood according to claim 1 of the present invention sucks and exhausts air into the main body, a suction port for sucking air into the main body, a discharge port communicating with the outdoors, and a ventilation path connecting the suction port and the discharge port. A circular filter is provided between the exhaust fan, the motor that drives the exhaust fan, the suction port, and the exhaust fan, and a filter motor that rotationally drives the filter about a horizontal direction as a rotation axis and a part of the filter are housed. A water tank, a water supply means for supplying water to the water tank and storing water, a drain means for draining the water stored in the water tank, and an injection means for injecting water into the filter in the water tank, and storing water in the water tank by the water supply means, The filter motor is rotated at a low speed for a predetermined time with the filter motor immersed in a portion of the water below the filter, and then the water is stored by the drainage means. Said desorbed oil by water discharged, then, is characterized by washing the filter by injecting water into the filter by the injection means rotates the filter at a high speed by the filter motor.

  As a result, the oil adhering together with the lint and dust can be removed as well as the oil adhering to the filter in liquid form.

  The range hood according to claim 2 of the present invention is the range hood according to claim 1, wherein the rotation of the filter in the process of rotating the filter at a low speed for a predetermined time while the water is stored in the aquarium is alternately forward and reverse. It is characterized by forward and reverse repetitive rotations repeated in steps.

  This increases the relative speed between the water in the water tank and the filter, promotes oil detachment, and shortens the cleaning time.

  The range hood according to claim 3 of the present invention is characterized in that, in the invention according to claim 2, forward and reverse repetitive rotations are different in forward rotation time or angle and reverse rotation time or angle.

  As a result, the filter gradually rotates and moves in one direction, so that the entire surface of the filter can be washed uniformly.

  The range hood according to claim 4 of the present invention is characterized in that, in the invention according to claim 2, forward and reverse repetitive rotation of the filter is intermittently performed.

  As a result, the filter is easily immersed in the water in the water tank, so that the oil adhering to the solid is easily detached, and the cleaning performance is improved.

  The range hood according to claim 5 of the present invention is characterized in that, in the invention according to claim 1, water injection is performed after high-speed rotation of the filter is continued for a predetermined time.

  As a result, oil remaining in advance is scattered, so that the cleaning effect by jetting water is enhanced.

  The range hood of the invention according to claim 6 of the present invention is characterized in that in the invention of claim 1, the water injection is carried out intermittently.

  This increases the cleaning effect and improves the cleaning performance.

  The range hood according to claim 7 of the present invention is the range hood according to claim 1, wherein the water supply means pumps the water in the water tank replenished from the water tank by a pump, It is characterized by being continued until all the water in the tank is discharged.

  This can prevent water corrosion caused by leaving the water remaining in the water storage tank for a long time.

  The range hood according to an eighth aspect of the present invention is characterized in that, in the first aspect of the invention, after the water is sprayed onto the filter for a predetermined time, the high-speed rotation of the filter is continued for a predetermined time.

  As a result, drying of the filter can be promoted, and the performance of the filter can be quickly restored.

  The range hood according to claim 9 of the present invention is characterized in that, in the invention according to claim 1, the exhaust fan of the range hood is driven during high-speed rotation of the filter.

  As a result, dust and the like separated from the filter by jetting water are discharged to the outdoors. Moreover, drying of the filter is promoted, and the drying time can be shortened.

  A filter cleaning method for a range hood according to claim 10 of the present invention includes a main body, a suction port for sucking air into the main body, a discharge port communicating with the outdoors, and a ventilation path connecting the suction port and the discharge port. An exhaust fan that sucks and exhausts air, a motor that drives the exhaust fan, a circular filter between the suction port and the exhaust fan, and a filter motor that drives the filter to rotate about a horizontal axis as a rotation axis A water tank containing a part of the water tank, a water supply means for supplying water to the water tank and storing water, a drain means for draining the water stored in the water tank, and an injection means for injecting water into the filter in the water tank. An immersion cleaning process in which the filter motor is rotated at a low speed for a predetermined time with a part of the filter immersed therein, and the immersion cleaning process. In addition, the drainage means drains the water stored in the water tank by the drainage means and discharges the oil released into the water tank to the outside of the water tank, and then the filter motor rotates the filter at high speed for a predetermined time after the drainage process. The spray cleaning process in which water is sprayed onto the filter by the spraying means, and the drying process in which the filter motor continues high-speed rotation for a predetermined time by the filter motor after the spray cleaning process. .

  As a result, not only the oil adhering to the filter but also the oil adhered together with the lint and dust can be removed.

  The filter cleaning method for a range hood according to an eleventh aspect of the present invention is characterized in that in the invention according to the tenth aspect, the low speed rotation is a forward and reverse repetitive rotation in which forward rotation and reverse rotation are alternately repeated. .

  This increases the cleaning effect and improves the cleaning performance.

  A filter cleaning method for a range hood according to a twelfth aspect of the present invention is characterized in that, in the invention according to the tenth aspect, water injection is carried out intermittently.

  This increases the cleaning effect and improves the cleaning performance.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  In addition, although the number is illustrated for easy understanding, the present invention is not restricted to this number.

(Embodiment 1)
FIG. 1 is a diagram showing the configuration of Embodiment 1 of the present invention, FIG. 1 (a) is a partially sectional front view, FIG. 1 (b) is a partially sectional side view, and a kitchen counter (FIG. It is installed on the wall surface above (not shown).

  The main body 1 of the range hood has a suction port 2 for sucking air around the cooking table, and a discharge port 3 communicating with the outside, and an exhaust fan 4, a motor 5 for driving the exhaust fan 4, and a circular filter 6. And a filter motor 7 for driving the same, a water tank 8 for storing a part of the filter 6, an injection nozzle 9 provided in the water tank 8, and water such as city water and lukewarm water (for example, about 40 ° C.) A water tank 10 for storing water, a water tank 11 supplied by the water tank 10, a pump 12 for pumping water in the water tank 11, a switching valve 13, a drain valve 14 and a drain tray 15 as drain means, A pump 12 and a water storage tank 11 are provided as water supply means.

  When the exhaust fan 4 is driven by the motor 5, the air around the cooking table is sucked from the suction port 2 as shown in FIG. A and is discharged to the outside from the discharge port 3 through the filter 6. And dust are captured by the filter 6, and the purified air is discharged outdoors.

  2 is a diagram showing a detailed configuration of the periphery of the filter 6 in FIG. 1, FIG. 2 (a) is a front view, and FIG. 2 (b) is a partial sectional side view.

  A part of the filter 6 is housed in a water tank 8 and is rotated in the direction B in the figure by driving a filter motor 7 (not shown) fixed in the main body 1 of the range hood.

  The water tank 8 includes a water supply hole 8a on the upper side, a drain hole 8b on the lower side, and a spray nozzle 9 on the side surface.

  The injection nozzle 9 is attached to the side surface of the water tank 8 on the side where the rotation of the filter 6 is reached when the filter 6 rotates, and includes a plurality of injection holes 9a for injecting water as shown in FIG.

  The cover 16 is provided to collect oil and water droplets scattered when the filter 6 described later rotates in the water tank 8.

  FIG. 3 is a diagram showing a water circuit and an electric circuit. First, the water circuit indicated by the thick line D will be described. The water staying in the water storage tank 11 is supplied to the water tank 8 from the water supply hole 8a through the switching valve 13 when the pump 12 is driven, or the water is injected from the injection nozzle 9 into the water tank 8. To be supplied with water. The water staying in the water tank 8 is discharged from the water tank 8 by opening the drain valve 14 as a draining means, and stays in the drain tray 15.

  Next, the electric circuit will be described. The control device 17 includes a CPU such as a microcomputer and various interfaces (not shown) in the inside thereof, and starts operation when the user operates the start switch 18, and the CPU passes through each interface. The motor 5, the filter motor 7, the pump 12, the switching valve 13, and the drain valve 14 are controlled.

  Finally, the detailed operation will be described with reference to the above-described FIGS. 1 to 3 using a flowchart for explaining the operation of the control device 17 of FIG.

  First, for example, the user attaches a water tank 10 filled with lukewarm water (for example, about 40 ° C.) to a temperature that is easy for the user to handle at a temperature at which the fixed oil is easily softened or peeled off. Then, when the start switch 18 is pressed, in S (step) 101, the drain valve 14 is closed, the pump 12 is driven, the switching valve 13 is set to the water supply side, water is supplied to the water tank 8, and water, for example, Store lukewarm water. In this case, as a method of storing an appropriate amount of water, for example, lukewarm water, in the aquarium 8, the pump 12 may be operated for a predetermined time (for example, 7 seconds). The pump 12 may be operated until an appropriate water level is detected.

  When the water storage in the water tank 8 is completed, the filter motor 7 is rotated in the direction of B in FIG. 2 at a low speed rotation (such as about 30 rotations per minute) so that the water in the water tank 8 does not splash outside the tank in S102 and adheres to the filter 6 In this case, it is desirable that the rotation direction of the motor is not forward but reverse, and the rotation time is different between forward and reverse. For example, oil detachment is promoted by making the direction B for 1 second and then the opposite direction for 0.5 second, and the filter 6 moves sequentially in the B direction, so that the filter 6 is washed over the entire circumference. It becomes possible to do. The reason why the filter 6 is rotated at a low speed is to prevent the water in the water tank 8 from splashing outside the tank together with the oil that has been released when the filter 6 is rotated at a high speed.

  Next, the rotation of the filter 6 is stopped in S103, and a predetermined time is waited (for example, 5 seconds) in S104. As the time of soaking in lukewarm water becomes longer, the fixed oil becomes softer, and the release of the oil is promoted.

  The above-described cleaning operation is continued for a predetermined time, for example, 5 minutes (S105). Next, in S106, the drain valve 14 is opened, the water in the water tank 8 is drained together with the oil that has been removed, and retained in the drain tray 15.

  Next, in S107, the end of drainage is awaited, and in the next S108, the oil, water, or the like attached to the filter 6 is spun and desorbed from the filter 6 at a high speed rotation (for example, about 1400 revolutions per minute). Rotate in the B direction. The high-speed rotation of the filter 6 is continued for a predetermined time (for example, 10 seconds) in S109. During this time, part of oil and water remaining in the filter 6 is scattered around the filter 6 by centrifugal force. Some are scattered in the water tank 8, and others are captured by the cover 16 of FIG. 2 and collected in the water tank 8, and both stay in the drain tray 15 through the drain valve 14.

  Next, in S110, the motor 5 is driven to rotate the exhaust fan 4, and in S111, the pump 12 is driven while the high-speed rotation of the filter 6 is continued, and the switching valve 13 is set to the injection nozzle 9 side. Water is sprayed from 9 to the filter 6 in the horizontal direction. This water injection continues for a predetermined time (for example, 2 seconds) (S112), then stops water injection in S113, waits for a predetermined time (for example, 5 seconds) in S114, and then repeats the intermittent nozzle water in S111 to S114. The injection operation is performed a predetermined number of times (a plurality of times, for example, three times) in S115.

  By repeating this intermittent nozzle water injection, dust and oil solids remaining on the filter 6 are peeled off and scattered around by centrifugal force, so that the cleaning of the filter 6 further proceeds. In addition, oil adhering to the cover 16 and the inner wall of the water tank 8 is also peeled off by the collision of water droplets scattered from the filter 6 in this process, and is discharged from the drain valve 14 together with the above-described peeled solid matter and the jetted water. And is retained in the drain tray 15.

  When the predetermined number (for example, three times) of intermittent nozzle water injection is completed, water is injected again in S116. In this case, water is continuously injected, and the remaining water in the water storage tank 11 becomes zero in S117. Continue until.

  As a method of making the residual water zero, water injection may be performed for a predetermined time (for example, 5 seconds), and a water level sensor is provided in the water tank (not shown) until the water level sensor detects zero residual water. You may make it perform injection.

  Accordingly, corrosion of water due to water staying in the water storage tank 11 for a long period of time can be prevented, and in addition, cleaning of the inside of the water tank 8 and the inner surface of the cover 16 can be advanced.

  Next, in S118, the high speed rotation of the filter 6 is continued for a predetermined time (for example, 3 minutes), thereby drying the moisture remaining on the filter 6, but the exhaust fan 4 is driven and thus passes through the filter 6. Drying is promoted by air, and the filter 6 can be dried in a short time.

  After a predetermined time (for example, 3 minutes), in S119, the rotation of the filter 6 and the rotation of the exhaust fan 4 are stopped, and the automatic cleaning operation is terminated.

  Thereafter, the user discards the oil and water staying in the drain tray 15 and finishes the filter cleaning operation.

  As described above, the automatic cleaning device and automatic cleaning method for the filter in the range hood according to the present invention not only immerse and clean the filter contaminated with oil in a water tank, but also spray water while rotating the filter at high speed. Therefore, the cleaning power of the filter can be made extremely high, and the drying time can be shortened because the filter is also ventilated by the exhaust fan while rotating the filter at a high speed.

  In this embodiment, water is sprayed on one surface of the filter 6, but water may be sprayed by providing a spray nozzle on the other surface. In this case, further cleaning is performed. You can increase your power.

  Moreover, although the waste water from the water tank 8 is made to stay in the drain tray 15, it may be discharged directly into the sewage.

  In addition, the water supply to the water tank 8 is supplied to the water storage tank 11 by the water tank 10 and the water is pumped by the pump 12, but it is also possible to supply lukewarm water (for example, 40 ° C.) directly from the water heater. .

  The filter cleaning method in the range hood and the range hood of the present invention can remove the oil adhering to the filter with high removal performance without soiling the user's hands, so that the use of, for example, a commercial range hood other than home use, It can also be used in applications such as oil smoke removal equipment in factories.

The figure which shows the structure of the range hood of Embodiment 1 of this invention ((a) Front view of the same cross section, (b) Side view of the same cross section) The figure which shows the detailed structure around the filter ((a) The front view, (b) The side view of the cross section) Diagram showing the water circuit and electrical circuit Flow chart for explaining the operation of the control device

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body 2 Suction port 3 Discharge port 4 Exhaust fan 5 Motor 6 Filter 7 Filter motor 8 Water tank 9 Injection nozzle 11 Water storage tank 12 Pump 14 Drain valve

Claims (12)

A main body, a suction port that sucks air into the main body, a discharge port communicating outdoors, an exhaust fan that sucks and exhausts air into a ventilation path connecting the suction port and the discharge port, a motor that drives the exhaust fan, A circular filter is provided between the suction port and the exhaust fan to rotate the filter about a horizontal axis as a rotation axis, a water tank containing a part of the filter, water supply means for supplying water to the water tank and storing water A drainage means for draining the water stored in the water tank and an injection means for injecting water into the filter in the water tank, water is stored in the water tank by the water supply means, and a part of the lower part of the filter is immersed in the stored water. In this state, the filter motor rotates the filter at a low speed for a predetermined time, and then drains the stored oil by the drainage means to discharge the detached oil. , Then, range hood, characterized by washing the filter by injecting water into the filter by the injection means rotates the filter at a high speed by the filter motor. The range hood according to claim 1, wherein the rotation of the filter in a process of rotating the filter at a low speed for a predetermined time in a state where water is stored in the water tank is a forward and reverse repetitive rotation in which forward rotation and reverse rotation are alternately repeated. The range hood according to claim 2, wherein the forward / reverse repetitive rotation is different in forward rotation time or angle and reverse rotation time or angle. The range hood according to claim 2, wherein the forward / reverse repetitive rotation of the filter according to claim 2 is performed intermittently. The range hood according to claim 1, wherein water is jetted by the jetting means after high-speed rotation of the filter is continued for a predetermined time. The range hood according to claim 1, wherein water is jetted intermittently by the jetting means. The water supply means pumps water from a water tank replenished from a water tank, and the water injection by the injection means is continued until all of the water in the water tank is discharged. Range food. 2. The range hood according to claim 1, wherein after the water is sprayed to the filter by the spraying means for a predetermined time, the high-speed rotation of the filter is continued for a predetermined time. 2. The range hood according to claim 1, wherein the exhaust fan is driven during high-speed rotation of the filter. A main body, a suction port that sucks air into the main body, a discharge port communicating outdoors, an exhaust fan that sucks and exhausts air into a ventilation path connecting the suction port and the discharge port, a motor that drives the exhaust fan, A circular filter is provided between the suction port and the exhaust fan to rotate the filter about a horizontal axis as a rotation axis, a water tank containing a part of the filter, water supply means for supplying water to the water tank and storing water A draining means for draining the water stored in the water tank and an injection means for injecting water into the filter in the water tank, and a part of the filter is immersed in the stored water tank for a predetermined time by the filter motor. An immersion cleaning process in which the filter is rotated at a low speed, and an oil that is drained into the water tank by draining the water stored in the water tank by the drainage means after the immersion cleaning process. A draining process for discharging out of the water tank, an injection cleaning process for injecting water to the filter by the injection means while rotating the filter at a high speed for a predetermined time by the filter motor, and the jet cleaning process after the draining process. Next, a filter cleaning method in a range hood, comprising a drying step in which high speed rotation of the filter is continued for a predetermined time by the filter motor. The filter cleaning method for a range hood according to claim 10, wherein the low-speed rotation is a forward / reverse repetitive rotation in which forward rotation and reverse rotation are alternately repeated. 11. The filter cleaning method for a range hood according to claim 10, wherein water is jetted intermittently by the jetting means.

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