JP5541013B2 - Range food - Google Patents

Description

  The present invention relates to a range hood provided with a filter that removes minute objects that are dirt in the air.

  Conventionally, this type of range hood is known to have a filter attached for the purpose of collecting oily smoke, dust, and the like generated during cooking (see, for example, Patent Document 1).

  Hereinafter, the range hood will be described with reference to FIG.

  FIG. 5 is a configuration diagram of a conventional range hood 100 disclosed in Patent Document 1. As shown in FIG. Air 101 containing dirt such as oil passes through a suction port 102 and passes through a filter 104 disposed in front of the exhaust device 103. When the sensor 106 detects dirt on the filter 104, the driving device 105 rotates the filter 104 to remove the dirt by centrifugal force.

  Some types of range hoods have a filter attached for the purpose of collecting oily smoke or dust generated by cooking, and the filter is immersed in a cleaning solution for cleaning (see, for example, Patent Document 2).

  Hereinafter, the range hood will be described with reference to FIG.

  FIG. 6 is a configuration diagram of another conventional range hood 200 disclosed in Patent Document 2. As shown in FIG.

  The range hood 200 includes a filter 203 provided between the suction port 201 and the fan 202. The filter 203 rotates on a rotating shaft 204 that extends substantially horizontally. A portion below the rotating shaft 204 of the filter 203 is immersed in the cleaning liquid 205 accommodated in the cleaning tank 206. Air including dirt such as oil and dust passes through the portion above the rotating shaft 204 of the filter 203, and the dirt adheres. By rotating the filter 203 with the rotating shaft 204, the portion with dirt attached is positioned below the rotating shaft 204 and immersed in the cleaning liquid 205 for cleaning.

Japanese Patent Laid-Open No. 3-16439 JP-A-6-137630

  In such a conventional range hood 100, if dirt accumulates on the filter 104 and is dried, it is difficult to remove it sufficiently only by centrifugal force. Accordingly, the filter 104 is gradually clogged, and the performance of removing dirt is deteriorated.

  Further, in such a conventional range hood 200, the dirt floats in the cleaning liquid 205 after the filter 203 is cleaned. The floating dirt is reattached to the filter 203, and the filter 203 becomes gradually dirty and clogged, and the performance of the range hood 200 is deteriorated.

  These filters need to be cleaned regularly because dirt accumulates with use and the amount of air sucked in decreases or oil dripping occurs.

  Therefore, the present invention solves the above-mentioned conventional problems, and without removing the filter periodically, it is troublesome to remove dirt such as oil and dust of the filter that has been dried and fixed, and dirt that is floating in the washing liquid after washing. The purpose is to provide a range hood that can be removed without any problems.

  In order to achieve the above object, the range hood of the present invention is installed above or around a cooker, and sucks in polluted air, discharge ports that discharge purified air, and an exhaust device for exhaust ventilation A hood having an air passage that communicates with a blower casing that contains air, a disk-like filter that is rotated by driving means downstream of the suction port, a cleaning casing that surrounds the filter, and a number of injection ports in a row. A substantially cylindrical nozzle, a water supply means for supplying water to the nozzle, and a collecting means for collecting sewage scattered in the cleaning casing, from the filter center side toward the filter circumferential end side. The nozzle is arranged, a partition plate is provided so that the cleaning casing has a water storage structure, and the opening of the filter is formed in a radial slit shape from the center of the filter. Slit opening on both sides of the slit bars is obtained by a shape which is stepped.

  This means that the dirt stuck to the surface of the filter can be easily removed without removing the filter, reducing the need for cleaning, preventing clogging of the filter, and reducing the amount of air discharged. A range hood capable of effectively collecting oily smoke and dust on the filter is obtained.

  According to the present invention, by installing a nozzle in which a large number of injection ports are arranged in front of the filter, without removing the filter, by rotating the filter, water is sprayed on the entire filter area to remove dirt and fix the oil. It is possible to provide a range hood that can easily clean strong dirt such as dust and dirt.

  By making the slit bars on both sides of the slit opening of the filter into a stepped shape, the water sprayed from the nozzle hits the filter surface, and then flows in the direction of the filter step to remove oil and dust adhered to the filter surface. If the filter is rotated while being immersed in the water stored in the cleaning casing, the filter is formed in the step opening formed by the steps of the slit bars on both sides of the slit opening. The water flow passes in the direction opposite to the direction of rotation, and oil and dust attached to cover this part can be effectively peeled off, resulting in strong dirt such as oil and dust adhering to the filter. Therefore, it is possible to provide a range hood that is effective in that the performance of the filter is restored and the interval between cleaning operations can be extended.

Side surface block diagram which shows the installation state of the range hood of Embodiment 1 of this invention Perspective view near the nozzle of the same range hood Front view of the same hood nozzle (A) Front view and side view of filter of the same range hood, (b) Detailed view of the opening of the filter, (c) Cross section of the filter (A) Detailed view showing the water flow at the time of water injection from the nozzle, (b) Detailed view showing the water flow at the time of rotating the filter in a state immersed in the water stored in the cleaning casing Configuration diagram showing the state of conventional range hood installation Configuration diagram showing the installation state of another conventional range hood

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

(Embodiment 1)
As shown in FIGS. 1-3, the food | hood 2 which provided the suction inlet 1 which collects the microscopic thing which is the dust and the dust which floated around cooking oil generated by cooking above a cooking appliance (not shown) is provided. The hood 2 is provided with a discharge port 4 that communicates with the outside through a duct 3 that communicates with the outside, and a blower casing 6 that includes an exhaust device 5 is disposed inside the hood 2. The ventilation path 7 which connects the suction inlet 1 and the discharge outlet 4 via is formed.

  In addition, a flat rectifying plate 8 is provided near the suction port 1 in the hood 2, and a filter 10 having a hydrophilic coating for collecting oil and dust is provided on the front surface of the exhaust device 5, and the driving means 9 is connected. The outer periphery of the filter 10 has a cylindrical cleaning casing 11 that covers the filter 10, and on the front surface of the filter 10, a large number of injection ports 12 are arranged in a row and facing the filter 10. A substantially cylindrical nozzle 15 installed horizontally and at a fixed distance from the filter 10 toward the circumferential end side 14 is connected and fixed to a water storage device 16 and a water supply pump 17 to form a water supply means 18. ing.

  Further, a small hole 19 is provided in the lower end portion of the cleaning casing 11, and a collecting means 20 for draining and collecting the sewage scattered in the cleaning casing 11 from the small hole 19 is provided. In order to easily remove dirt such as oil and dust adhered to the filter 10, for example, hot water of about 40 ° C. is put into the water storage device 16 before washing.

  Moreover, the partition plate 21 is provided in the lower part of the cleaning casing 11, and the water sprayed from the nozzle 15 toward the filter 10 is stored in the cleaning casing 11 so that the lower part of the filter 10 is immersed.

  FIG. 4 shows the detailed shape of the filter 10. As shown in FIG. 4, the filter 10 is provided with a radial slit opening 22 from the center of the filter, and the slit bars 23 on both sides of the slit opening 22 protrude from the main body surface 24 of the filter 10 every other one. A step is formed by the adjacent slit bars that are formed, and a step opening 25 is formed. That is, the slit opening 22 is formed in the filter 10 when viewed from the direction of the rotating shaft 26 of the driving means 9, and the step opening 25 is formed when viewed from the circumferential direction of the rotating shaft 26.

  In the above configuration, dirt such as oil and indoor dust generated during cooking is sucked into the hood 2 from the suction port 1 around the rectifying plate 8 by operating the exhaust device 5 and installed in the ventilation path 7. It is collected and accumulated by the filter 10. On the other hand, the purified air that has passed through the filter 10 is discharged from the discharge port 4 to the outside through the duct 3 by the exhaust device 5.

  The dirt of the air passing through the filter 10 collides with the slit bar 23 of the filter 10 and is collected, and in the case of oil among the dirt of the air, it adheres to the end face of the opening when passing through the slit opening 22 of the filter 10, When dirt such as dust adheres to and accumulates on the attached oil, the slit opening 22 of the filter 10 is blocked to cause clogging, and the amount of exhausted air is reduced.

  Therefore, the filter 10 is washed. First, the filter 10 is rotated by the driving means 9, and at the same time, the water stored in the water storage device 16 is pumped up by the water supply pump 17 and supplied to the nozzle 15. The water jetted from the nozzle 12 of the nozzle 15 adheres to the hydrophilic coating surface applied to the filter 10, floats oil and dust adhering to the filter due to the hydrophilic effect, and collides with the filter bar 23. When the dirt adhering to the crosspiece 23 is peeled off and passes through the slit opening 22 of the filter 10 and further through the step opening 25, oil and dust accumulated in the slit opening 22 (or step opening 25) are also removed. They are removed together and washed by being scattered from the filter 10 by centrifugal force due to rotation.

  At this time, the slit opening 22 of the filter 10 is formed in a radial slit shape from the center of the filter 10, and the radial slit-shaped slit opening 22 is formed with one opening to the vicinity of the outer edge of the filter 10. Therefore, the centrifugal force generated by the rotation of the filter 10 can be used effectively, and the oil or dust peeled off from the filter 10 by the water jetted from the nozzle 12 of the nozzle 15 is blown out of the filter 10 by the centrifugal force. (See FIG. 5a).

  Further, when the filter 10 is rotated while immersed in water stored in the cleaning casing 11, a water flow is generated along the surface of the filter 10 in a direction opposite to the rotation direction of the filter 10. Since this water flow passes through the step opening 25, oil, dust and the like attached so as to cover this portion can be effectively peeled off (see FIG. 5b). That is, if there is no step in the slit bar 23, the dirt that closes the slit opening 22 is attached in a direction parallel to the water flow that rotates in the water, so the water flow does not collide and is difficult to peel off. The water flow comes to collide with the dirt blocking the part, and it becomes easy to peel off.

  It should be noted that the steps of the slit bars on both sides of the slit opening 22 are formed so that the adjacent slit bars 23 protrude in every other direction so as to form a step, but alternately protrude in the opposite direction. It may be so formed that adjacent slit bars 23 form a step.

  The filter opening 22 of the filter 10 is preferably large in order to prevent clogging due to dirt such as oil and dust, but is preferably small on the dirt collecting surface. In order to satisfy the function as a range hood, the width, length and arrangement of the slit opening 22 and the step height of the step opening are determined in consideration of the balance between these two conflicting phenomena.

  The water flow passing through the step opening 25 is assumed to rotate when the filter 10 is immersed in the water stored in the cleaning casing 11. However, since the filter 10 is vertically mounted and rotated, the nozzle 15 It is needless to say that a water flow having a flow component in the circumferential direction that is partially opposite to the rotation direction is generated on the surface of the filter 10 even when water is jetted from the filter 10.

  In addition, since the residual water after injection accumulated in the washing casing 11 having a water storage structure contains dirt, the filter 10 is washed intermittently, and dirt floating in the washing casing 11 during washing. Even when the filter 10 is reattached to the filter 10, the water once washed is drained by opening a valve (not shown), and the filter 10 is rotated several times from the nozzle 15 while the filter 10 is rotated without storing water in the washing casing 11. By vigorously injecting water, it is possible to wash away dirt adhering to the entire filter, and dirt floating in the washing liquid after washing can be removed without trouble.

  The nozzle 15 is installed in the horizontal direction on the front surface of the filter 10, but it may be installed at a constant distance from the center side 13 of the filter 10 toward the circumferential end side 14 of the filter 10. For example, it may be installed at a vertical position or an oblique position.

  As described above, by installing a nozzle with a large number of injection ports in front of a filter with hydrophilic coating, water can be injected over the entire filter by rotating the filter without removing the filter. Removes dirt and cleans up hard dirt such as oil and dust that adheres to it without any hassle. Also, the opening of the filter has a radial slit shape so that the oil and dust removed from the filter by water jetting. Etc. can effectively fly out of the filter by utilizing the centrifugal force due to the rotation of the filter, and the slit bars on both sides of the slit opening have a stepped shape, so the water jetted from the nozzle is filtered When it collides with the crosspiece and passes through the slit opening of the filter and the step opening, this slit opening (or step) Accumulated oil and dirt in the openings) may also be removed to suit.

  Furthermore, if the filter is rotated while immersed in water stored in the cleaning casing, the water flow will strike the step of the slit bar on both sides of the slit opening opposite to the direction of rotation of the filter. Oil and dust attached to the cover can be effectively peeled off, and as a result, strong dirt such as oil and dust attached to the filter can be peeled off. It is possible to provide a range hood that has an effect of increasing the interval between the two.

  The structure that removes dirt by the force of water to be sprayed and centrifugal force can be applied to a ventilation device that collects dirt with a filter and is installed in a place where it is difficult to maintain and maintain the filter.

DESCRIPTION OF SYMBOLS 1 Suction port 2 Hood 4 Discharge port 5 Exhaust device 6 Blower casing 7 Ventilation path 8 Current plate 9 Driving means 10 Filter 11 Cleaning casing 12 Injection port 13 Center side 14 Circumferential end side 15 Nozzle 16 Water storage device 17 Water supply pump 18 Water supply means 19 Small hole 20 Collecting means 21 Partition plate 22 Slit opening 23 Slit bar 24 Body surface 25 Step opening 26 Rotating shaft

Claims (2)

A ventilation passage is provided by connecting an intake port for sucking contaminated air, an outlet port for discharging purified air, and a blower casing containing an exhaust device for exhaust blower, which is installed above or around the cooker. Food and
A filter in the form of a disk that is rotated by drive means downstream of the suction port;
A wash casing surrounding the filter;
A cylindrical nozzle in which a number of injection ports are arranged in a line;
Water supply means for supplying water to the nozzle;
A means for collecting sewage scattered in the cleaning casing;
The nozzle is arranged from the filter center side toward the circumferential end side,
A partition plate is provided so that the cleaning casing has a water storage structure,
The range hood is characterized in that the opening of the filter has a radial slit shape from the center of the filter, and the slit bars on both sides of the opening of the slit are stepped. The range hood according to claim 1, wherein the filter surface is provided with a hydrophilic coating.

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