JP5130864B2 - Range food - Google Patents

Description

  The present invention relates to removal of dirt on a filter attached to a range hood.

  Conventionally, a filter has been attached to the range hood for the purpose of collecting oily smoke and dust generated by cooking. Since this filter is contaminated with use, the amount of air to be sucked in decreases and oil dripping occurs from the collecting part. Therefore, it is necessary to perform regular cleaning.

  In addition, as a means for automatically purifying the filter in order to reduce the labor of cleaning, there has been a range hood that removes dirt by centrifugal force by attaching a driving means to the filter and rotating it (for example, Patent Documents) 1).

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

As shown in FIG. 13, the dirty air 101 passes through the suction port 102 and passes through the filter 104 disposed in front of the exhaust device 103. The driving device 105 that rotates the filter 104 and the sensor 106 that detects dirt on the filter 104 detect the dirt on the filter 104 and rotate the filter 104 with the driving device 105 to remove the dirt by centrifugal force. ing.
Japanese Patent Laid-Open No. 3-16439 (page 3, FIG. 1)

  In such a conventional range hood, if dirt such as oil adheres to the filter and it dries or accumulates, it is difficult to remove it sufficiently only by centrifugal force, and the filter gradually becomes clogged and the dirt is removed. There existed a subject that the performance to remove fell.

  The present invention solves such a conventional problem, and without removing the filter, removes dirt such as oil and dust from the dried and fixed filter without trouble, and prevents deterioration of oil discharge performance. It aims to provide a range hood that is characterized by being able to.

  In order to achieve the above-mentioned object, the range hood of the present invention includes an intake port that is installed above or around a cooker and sucks contaminated air, an outlet port that communicates outdoors, and an exhaust device for exhaust ventilation. A hood in communication with the encased ventilation casing to provide a ventilation path, a disk-shaped 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. The substantially cylindrical nozzles arranged, water supply means for supplying water to the nozzles, and means for collecting sewage scattered in the cleaning casing, and from the filter center side toward the filter circumferential end side, The nozzles are arranged on a straight line.

  This means that the dirt stuck to the surface of the filter can be easily removed, reducing the need for cleaning, preventing clogging of the filter, reducing the amount of air discharged, and filtering out oil smoke and dust. A range hood that can be effectively collected is obtained.

  A hood having a ventilation path formed from a suction port for sucking air containing minute objects to a discharge port, an exhaust device for exhaust ventilation provided in the ventilation path, and provided in the ventilation path and rotated about a central axis. A filter having an outer peripheral end, and having an effective area for capturing the minute objects through the air, the effective area covering the filter having an inner peripheral edge surrounding the central axis and the outer peripheral end of the filter. A plurality of nozzles having a plurality of injection ports opposed to the filter, a water supply unit that supplies water to the nozzles, and a recovery unit that collects water scattered in the cleaning casing. The nozzles are arranged on a predetermined line from the inner peripheral end to the outer peripheral end of the effective area of the filter.

  By this means, it is possible to easily remove the dirt caused by the minute objects fixed on the surface of the filter, thus reducing the trouble of cleaning, preventing the filter from being clogged, and suppressing the decrease in the air volume to be discharged. A range hood capable of effectively collecting dust on the filter is obtained.

  In another means, a large number of nozzles provided in the nozzle are arranged in a wave shape.

  By this means, a range hood capable of efficiently removing filter dirt in a short time is obtained.

  In another means, the discharge area of the nozzle nozzle is increased from the filter center side toward the filter circumferential end side.

  By this means, more water can be supplied to the filter circumferential end side that requires more water supply, the filter dirt can be uniformly removed, and it is not necessary to repeat the cleaning operation over and over again. A range hood is obtained.

  The other means is such that the intervals at which the nozzle injection holes are arranged are narrowed from the filter center side toward the filter circumferential end side.

  By this means, even if the amount of water supplied from the water supply means is reduced, the filter dirt can be removed, the head required for water supply can be kept low, the water supply path can be reduced, and the filter dirt can be removed. A range hood capable of reducing the cost of water supply means and saving installation space can be obtained.

  Another means is to weaken the momentum of water sprayed from the nozzle outlet to the filter circumferential end side from the filter center side.

  By this means, it is possible to obtain a range hood capable of suppressing the deflection of the filter itself, improving the effect of removing dirt by jetting water, and preventing the deformation of the filter and improving the maintainability of the device.

  In another aspect, the shape of the cross section of the nozzle is a sharp end on the upstream side of the ventilation path, and a bottom end on the downstream side of the ventilation path that is vertically higher than the sharp end. An injection port is provided at the end.

  By this means, it is possible to obtain a range hood that can reduce the adhesion of dirt on the nozzle itself that is left in the ventilation path and can extremely reduce pressure loss.

  Further, the plurality of injection ports include a plurality of first injection ports arranged on a first straight line from an inner peripheral end to an outer peripheral end of the effective area of the filter, and the inner peripheral end of the effective area of the filter. A plurality of second injection ports arranged on a second straight line parallel to the first straight line from the outer peripheral end to the outer peripheral end, and the plurality of first injection ports are adjacent to each other. The plurality of second injection ports include a fifth injection port, and the third injection port and the fourth injection port are opposed to each other. The injection port portion and the fourth injection port portion are in contact with concentric circles centered on the central axis, and the fifth injection port is positioned between the concentric circles.

  By this means, it is possible to obtain a range hood in which the injection ports are arranged with high density so that minute objects such as dirt attached to the filter can be reliably removed.

  According to the present invention, by installing a nozzle in which a large number of injection ports are arranged in front of the filter, water is sprayed all over the filter at once to remove the dirt, and solid dirt such as oil and dust can be easily removed. A range hood that can be washed can be provided.

  Another means is that the nozzles provided in the nozzles are arranged in a wave shape, so that the water sprayed from the nozzles can remove the dirt on the filter without interfering with each other and canceling out the momentum. It is possible to provide a range hood that can efficiently perform filter cleaning in a short time.

  Another means is that the discharge area of the nozzle nozzle provided on the center side of the filter is larger than the nozzle outlet on the filter circumferential edge side, so that the filter circumferential edge has a very large area and is removed. Even when a large amount of water is required, a range hood that can keep the filter clean without repeating the washing operation many times can be provided.

  In addition, the other means is such that the interval at which the nozzle injection holes are arranged is narrowed toward the filter circumferential end side, and water can be supplied without increasing the amount of water injected from the nozzle, thus reducing the cost of parts. A range hood that can save space by scaling down can be provided.

  In addition, since other means weaken the momentum of the water sprayed to the filter circumferential end side, weaken the pressing force to the filter circumferential end side where the component strength is relatively weak, etc. Thus, it is possible to provide a range hood capable of preventing the failure of the filter, the driving means, etc., and prolonging the service life.

  Another means is that the cross-sectional shape of the nozzle has a sharp end on the upstream side of the ventilation path and a bottom end on the downstream side of the ventilation path that is vertically higher than the sharp end. Thus, it is possible to provide a range hood that can reduce dirt that adheres to the nozzle itself, eliminates the trouble of cleaning the inside of the hood machine, and lowers the ventilation resistance.

  In addition, the portions of the jet ports facing each other in one row are in contact with concentric circles centering on the central axis of the filter, and the jet ports in another row provided in parallel are jetted so as to be located between the concentric circles. By disposing the mouth, it is possible to provide a range hood that can increase the density of the disposition and reliably remove minute matters such as dirt attached to the filter.

Les Njifudo of the present invention is placed above or around the cooker, communicates with the suction port to suck contaminated air, a discharge port communicated with the outdoor, and a blowing casing containing therein an exhaust system for an exhaust blower A hood provided with a ventilation passage, a disk-like filter that is rotated by driving means downstream of the suction port, a cleaning casing that surrounds the filter, and a substantially cylindrical nozzle in which a number of injection ports are arranged in a row. , Having a water supply means for supplying water to the nozzle and a means for collecting sewage scattered in the cleaning casing, and the nozzle is arranged in a straight line from the filter central side toward the filter circumferential end side The water having a momentum sprayed from the nozzle collides over the entire area of the filter, and has an action of peeling and scattering dirt on the filter holes and the surface.

  Further, a hood having a ventilation path formed from a suction port for sucking air containing minute objects to a discharge port, an exhaust device for exhaust ventilation provided in the ventilation path, and a central axis provided in the ventilation path. A filter having an outer peripheral edge that rotates and has an effective area that captures the minute object through the air, the effective area having an inner peripheral edge surrounding the central axis, and the outer peripheral edge of the filter A cleaning casing that covers and surrounds the nozzle, a nozzle having a plurality of injection ports facing the filter, a water supply unit that supplies water to the nozzle, and a recovery unit that recovers water scattered in the cleaning casing, The plurality of injection ports are arranged on a predetermined line from the inner peripheral end to the outer peripheral end of the effective area of the filter, and water having a momentum injected from a nozzle Over the effective area of the coater collide, it has the effect of peeling and scattering the dirt filter pores and surface.

  In addition, a large number of nozzles provided in the nozzle are arranged in a wave shape, and has an effect of reducing mutual interference of water jetted from the nozzle nozzle.

  Further, the discharge area of the nozzle injection port is increased from the filter center side toward the filter circumferential end side, and has a function of supplying a sufficient amount of water to the filter circumferential end side having a large area.

  Further, the interval at which the nozzle nozzles are arranged is narrowed from the filter center side toward the filter circumferential end side, and has the effect of concentrating on the filter circumferential end side and supplying water.

  Further, the momentum of water sprayed from the nozzle outlet to the filter is weakened from the filter center side toward the filter circumferential end side, and has an effect of preventing deformation and distortion on the filter circumferential end side.

  In addition, the shape of the cross section of the nozzle is a sharp end on the upstream side of the ventilation path, and a bottom end that is vertically higher than the sharp end on the downstream side of the ventilation path. It has the effect of reducing the amount of oil adhering to the nozzle itself by reducing the air flow resistance by rectifying without countering.

  Further, the plurality of injection ports include a plurality of first injection ports arranged on a first straight line from an inner peripheral end to an outer peripheral end of the effective area of the filter, and the inner peripheral end of the effective area of the filter. A plurality of second injection ports arranged on a second straight line parallel to the first straight line from the outer peripheral end to the outer peripheral end, and the plurality of first injection ports are adjacent to each other. The plurality of second injection ports include a fifth injection port, and the third injection port and the fourth injection port are opposed to each other. The injection port portion and the fourth injection port portion are respectively in contact with concentric circles centered on the central axis, and the fifth injection port is located between the concentric circles, and the effective area of the filter Evenly, it has the action of spraying water reliably.

  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. Further, a flat rectifying plate 8 is provided in the vicinity of the suction port 1 in the hood 2, and a filter 10 having a punching hole for collecting oil and dust connected to the driving means 9 on the front surface of the exhaust device 5 is provided. 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 constant distance from the filter 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. 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 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, and then discharged to the outside from the discharge port 4 through the duct 3 by the exhaust device 5. At that time, dirt attached to the filter 10, particularly dust, enters the hole of the filter 10 and becomes intricately entangled, which makes it very difficult to remove and promotes the adhesion of oil. As a result, clogging occurs and the exhaust air volume 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 by the water supply pump 17 and supplied to the nozzle 15. The water jetted from the nozzle 12 of the nozzle 15 peels off the dirt while colliding with the surface of the filter 10, and also removes the entangled and accumulated dust when passing through the hole of the filter 10 and rotates together. It will be washed by being scattered from the filter 10 by centrifugal force. In addition, since the substantially cylindrical nozzle 15 in which a large number of injection ports 12 are arranged in a horizontal row is disposed horizontally from the filter center side 13 to the filter circumferential end side 14, the water is injected with the force of the injection port 12. The dirt is removed by hitting the mouth 12. Moreover, if there are few injection ports 12, the dirt once removed only moves on the filter 10, but since it is sprayed all over the filter 10 at once, it can be easily and very cleanly cleaned. For this reason, accumulated dirt which is usually difficult to clean can be easily and easily removed.

  Although the filter 10 has a punching hole shape, the filter 10 may have a net shape or a long hole shape, and there is no difference in operational effects.

  The nozzle 15 is installed in the horizontal direction on the front surface of the filter 10. However, the nozzle 15 may be installed at a certain distance from the filter center side 13 toward the filter circumferential end side 14. You may install in the position or the position of an oblique direction.

(Embodiment 2)
In FIG. 4, the same components as those in FIGS.

  As shown in FIG. 4, a large number of injection ports 12A provided in the nozzle 15A are arranged in a wave shape.

  In the above configuration, at the time of cleaning the filter 10A, water is injected from the injection port 12A arranged in the wave shape of the nozzle 15A, and reaches the filter 10A and expands on the filter so that the ring spreads. Although the dirt is washed with the water flow at the time of collision and the water flow at the time of expansion, since the nozzles 15A are arranged in a wave shape, the interval between the respective injection ports 12A becomes large, and without canceling each other's water force, And since it collides without disturbing the expansion of water, it can be washed efficiently without colliding and reducing the effect of removing it, so that the time required for washing and the amount of water used can be reduced.

(Embodiment 3)
In FIG. 5, the same components as those in FIGS.

  As shown in FIG. 5, the nozzle 15B is formed such that the discharge area of the injection port 12B of the nozzle 15B increases from the filter center side 13B toward the filter circumferential end side 14B.

  In the above configuration, the area of the filter 10B to be cleaned by the injection port 12B of the nozzle 15B on the filter circumferential end side 14B is very large compared to the filter center side 13B. That is, the amount of water must be increased because the equivalent area of the filter 10B handled per mouth is large, but the filter circumferential end side 14B can be cleaned by increasing the amount of water by increasing the discharge area of the filter circumferential end side 14B. Can be done. For this reason, a series of removal operations that have been repeated several times can be completed in a single operation without generating any unwashed parts on the filter circumferential end side 14B. Can do.

(Embodiment 4)
6, the same components as those in FIGS. 1 to 5 are denoted by the same reference numerals, and the description thereof is omitted.

  As shown in FIG. 6, the nozzle 15C is formed such that the interval at which the injection ports 12C of the nozzle 15C are arranged narrows toward the filter circumferential end side 14C.

  In the above configuration, when the filter 10C is washed, the arrangement interval of the injection ports 12C of the nozzle 15C arranged on the filter circumferential end side 14C is small, so that water is concentrated on the filter circumferential end side 14C. Such water can surely wash out the filter circumferential end side 14C without leakage, and the filter 10C can be cleaned without increasing the amount of water supplied to the nozzle 15C, and in particular, the water supply pump 17 (not shown), etc. The cost of these parts can be reduced, and by reducing the amount of water, the hose shape of the water path can be made smaller and space can be saved.

(Embodiment 5)
In FIG. 7, the same constituent elements as those in FIGS. 1 to 6 are denoted by the same reference numerals, and the description thereof is omitted.

  As shown in FIG. 7, the momentum 30 of water sprayed to the filter 10D is set so as to weaken from the filter center side 13D toward the filter circumferential end side 14D.

  In the above configuration, the filter 10D uses an aluminum plate, a thin iron plate, etc. that are usually easy to process in order to make a punching hole, but the filter circle is compared with the filter center side 13D that is connected and fixed to the driving means 9D. The peripheral end side 14D is particularly apt to be distorted with respect to the thrust on the front. Therefore, the deformation of the filter 10D is prevented in advance by controlling the momentum 30 of water sprayed from the front surface of the filter 10D, but the effect of washing the filter 10D is reduced because the water force on the filter circumferential end side 14D is weak. In addition, the removal operation can be performed, and the vibration and sound due to the deformation of the filter 10D can be suppressed, the vibration generated by the use for many years can induce the destruction of the filter 10D, and the load due to the vibration is applied to the driving means 9D. By avoiding the problem of rotation caused by this, it is possible to improve the maintainability of the device.

(Embodiment 6)
8, the same components as those in FIGS. 1 to 7 are denoted by the same reference numerals, and the description thereof is omitted.

  As shown in FIG. 8, the shape of the cross section of the nozzle 15 </ b> E is such that the upstream side of the ventilation path 7 </ b> E has a sharp sharp end 40, and the downstream side of the ventilation path 7 </ b> E has a bottom end that is vertically higher than the sharp end 40. 41, and the injection port 12E is provided on the bottom end 41 side.

  In the above configuration, since the nozzle 15E itself is installed in the ventilation path 7E through which contaminated air passes during normal smoke discharge, oil and dust will adhere, but as an example, the cross section of the nozzle 15E is approximately If it is a streamline type that does not obstruct the ventilation of the wind with a triangle, the adhesion of dirt on the nozzle 15E itself is extremely small, and it is freed from the trouble of cleaning the nozzle 15E that could not be prevented even if the trouble of removing the dirt on the filter 10E was reduced. Further, since the wind is rectified and allowed to pass through, the pressure resistance can be kept low, so that it is possible to prevent functional troubles such as a decrease in the air volume.

(Embodiment 7)
FIG. 9 is a front view of the range hood nozzle 15F. In the figure, the same reference numerals are given to the same portions as those of the range hood in the first embodiment shown in FIGS. In the present embodiment, a nozzle 15F is provided instead of the nozzle 15 of the range hood shown in FIGS. FIG. 9 is a front view of the nozzle 15 </ b> F viewed from the filter 10. As with the nozzle 15 shown in FIG. 3, the nozzle 15F is within a range from the filter center side 13 to the filter circumferential side 14, but has a predetermined line from the inner peripheral end 13E to the outer peripheral end 14E of the effective area 10Z of the filter 10. A plurality of injection ports 12 arranged in a line on the straight line. The nozzle 15F is positioned below the center axis 9A of the filter 10 and extends substantially horizontally. The plurality of injection ports 12 are arranged substantially horizontally. Thereby, the nozzle 15F has the same effect as the nozzle 15 according to the first embodiment shown in FIG. Further, since it is positioned below the central axis 9A, the driving means 9 and its rotating shaft 9B (not shown) that are connected to the central axis 9A of the filter 10 and are located in the center are arranged outside the effective range 10Z. It is possible to prevent the water sprayed from the spraying port 12 from being applied, and it is possible to clean the filter 10 by spraying water at an appropriate position with an appropriate amount of water.

  In addition, the present embodiment is characterized in that the injection port 12 of the nozzle 15D is particularly located from the inner peripheral end 13E to the outer peripheral end 14E of the effective area 10Z of the filter. Even if the injection ports 12A, 12B, and 12C according to the forms 2 to 4 are used, the same effect is obtained. And as shown in FIG. 10, even if it arrange | positions the injection port 12 shifting to the right direction from the center axis | shaft 9A, it is prevented that the sprayed water splashes on the rotating shaft 9B or the drive means 9, and the same effect is acquired. . Of course, depending on the configuration of the nozzle, the same effect can be obtained even if it is shifted to the left.

  In addition, as in the fifth embodiment, the same effect can be obtained by using the nozzle 15D that is installed by decreasing the momentum of water to be sprayed from the filter center side 13 toward the filter circumferential end side 14.

  Further, the nozzle 15F according to the present embodiment may have a cross-sectional shape set similarly to the range hood nozzle 15E according to the sixth embodiment shown in FIG. Thereby, the same effect as the range hood by this Embodiment shown in FIG. 8 is acquired.

(Embodiment 8)
FIG. 11 is a front view of the nozzle 15G of the range hood in the present embodiment. In the figure, the same parts as those in the range hood shown in FIGS. The nozzle of the present embodiment includes a nozzle 15G instead of the nozzle 15F of the seventh embodiment. FIG. 10 is a front view of the nozzle 15 </ b> G viewed from the filter 10.

  The nozzle 15G has a plurality of injection ports 12D arranged from the inner peripheral end 13E to the outer peripheral end 14E of the effective region 10Z of the filter 10 in the same manner as the nozzle 15F shown in FIGS. The plurality of injection ports 12D include a plurality of injection ports 42 and 43 arranged from the inner peripheral end 13E to the outer peripheral end 14E of the effective region 10Z of the filter 10. The nozzle 15G is located below the central axis 9A and extends substantially horizontally. The plurality of first injection ports 42 and the second 43 are arranged substantially horizontally. The plurality of first injection ports 42 are disposed on a first straight line 60 that extends substantially horizontally. The plurality of second injection ports 43 are arranged on a second straight line 61 that extends horizontally in parallel with the first straight line 60.

  The arrangement of the first injection port 42 and the second injection port 43 will be described. FIG. 12 is an enlarged view of the nozzle 15G shown in FIG. The second injection ports 43 are in contact with the insides of the first injection ports 42 adjacent to each other and are located between concentric circles centering on the central axis 9A.

  The arrangement of the plurality of first injection ports 42 and the second 43 will be described in detail. As shown in FIG. 12, the plurality of first injection ports 42 include a third injection port 44 and a fourth injection port 45 that are adjacent to each other, and the plurality of second injection ports 43 are the fifth injection ports 46. including. Circles 47 and 48 are both concentric circles centered on the central axis 9A. The circles 47 and 48 are in contact with the mutually opposing portions 49 and 50 of the third injection port 44 and the fourth injection port 45, respectively. That is, the third injection port 44 is inscribed in the circle 47 and the fourth injection port 45 is inscribed in the circle 48. The fifth injection port 46 is located between the circles 47 and 48. Further, the third injection port 44 and the fourth injection port 45 are respectively opposed to the circles 51 and 52 located on the surface 10A of the filter 10, and the fifth injection port 46 is located on the surface 10A of the filter 10. Opposite the circle 53. Circles 51, 52, and 53 are concentric circles centered on the central axis 9A. The circle 53 is located between the circle 51 and the circle 52. The injection port 54, the third injection port 44, and the fourth injection port 45 of the first injection port 42 are continuous, and the injection port 54 and the third injection port 44 are adjacent to each other. The fifth injection port 46 and the injection port 55 of the second injection ports 43 are adjacent to each other. The third injection port 44, the injection port 54, and the injection port 55 are positioned in the same positional relationship as the third injection port 44, the fourth injection port 45, and the fifth injection port 46.

  The plurality of first injection ports 42 arranged on the first straight line 60 cannot be arranged in contact with each other. By providing a plurality of second injection ports 43 arranged on a second straight line 61 different from the first straight line 60 as in the above configuration, the first injection port 42 and the first injection port 42 on the surface of the filter 10 are provided. The water can be sprayed from the two spray ports 43 without any gap, and the density of the sprayed portion can be increased, so that fine objects such as dirt attached to the filter 10 can be reliably removed.

  The speed of water injected from the plurality of injection ports 12D of the nozzle 15G according to the seventh embodiment shown in FIGS. 11 and 12 may be set similarly to the range hood according to the fifth embodiment shown in FIG. Thereby, the same effect as the range hood according to the fifth embodiment shown in FIG. 7 is obtained.

  The cross-sectional shape of the nozzle 15G according to the present embodiment shown in FIGS. 11 and 12 may be set similarly to the range hood according to the sixth embodiment shown in FIG. Thereby, the same effect as the range hood according to the sixth embodiment shown in FIG. 8 is obtained.

  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.

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 Front view of nozzle of range hood of embodiment 2 Front view of nozzle of range hood of embodiment 3 Front view near the nozzle of the range hood of the fourth embodiment Top view of the range hood nozzle of the fifth embodiment Upper surface configuration diagram near the nozzle of the range hood of the sixth embodiment Front view of the range hood nozzle of the seventh embodiment The front view of the nozzle of another arrangement | positioning of the range hood of Embodiment 7 Front view of nozzle of range hood of embodiment 8 Nozzle main part enlarged view of range hood of Embodiment 8 Configuration diagram showing the state of conventional range hood installation

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Suction port 2 Hood 4 Discharge port 5 Exhaust device 6 Blower casing 7 Ventilation path 7E Ventilation path 9 Drive means 9A Center shaft 9B Rotating shaft 10 Filter 10A Filter 10B Filter 10C Filter 10D Filter 10E Filter 10Z Effective area 11 Washing casing 12 Injection 12A injection port 12B injection port 12C injection port 12D injection port 12E injection port 13 Filter center side 13B Filter center side 13C Filter center side 13D Filter center side 13E Inner peripheral end 14 Filter peripheral end side 14B Filter peripheral end side 14C Filter circle Peripheral end side 14D Filter peripheral end side 14E Outer peripheral end 15 Nozzle 15A Nozzle 15B Nozzle 15C Nozzle 15D Nozzle 15E Nozzle 15F Nozzle 15G Nozzle 18 Water supply means 20 times Means 30 Water momentum 40 Sharp end 41 Bottom end 42 First injection port 43 Second injection port 44 Third injection port 45 Fourth injection port 46 Fifth injection port 54 Injection port 55 Injection port 60 First straight line 61 Second straight line

Claims (2)

A hood installed above or around the cooker and provided with a ventilation path by communicating a suction port for sucking contaminated air, a discharge port communicating with the outdoors, and a blower casing containing an exhaust device for exhaust blower A disk-shaped filter that is rotated by driving means downstream of the suction port, a cleaning casing that surrounds the filter, a cylindrical nozzle in which a number of injection ports are arranged in a row, and water is supplied to the nozzle A plurality of injection ports , each having a water supply means and a means for collecting sewage scattered in the cleaning casing, wherein the nozzles are arranged linearly from the filter center side toward the circumferential end side. A plurality of first injection ports arranged on a first straight line from the inner peripheral end to the outer peripheral end of the effective area of the filter, and from the inner peripheral end of the effective area of the filter Perimeter A plurality of second injection ports arranged on a second straight line parallel to the first straight line, and the plurality of first injection ports include a third injection port adjacent to each other and a second 4 injection ports, the plurality of second injection ports include a fifth injection port, and the third injection port and the fourth injection port are the third injection ports facing each other. The range hood is in contact with a concentric circle centered on the central axis at a portion and the portion of the fourth injection port, and the fifth injection port is located between the concentric circles. A hood having a ventilation path formed from a suction port for sucking air containing minute objects to a discharge port, an exhaust device for exhaust ventilation provided in the ventilation path, and provided in the ventilation path and rotated about a central axis. A filter having an outer peripheral end, and having an effective area for capturing the minute objects through the air, the effective area covering the filter having an inner peripheral edge surrounding the central axis and the outer peripheral end of the filter. A plurality of nozzles having a plurality of injection ports opposed to the filter, a water supply unit that supplies water to the nozzles, and a recovery unit that collects water scattered in the cleaning casing. The injection ports are arranged on a predetermined line from the inner peripheral end to the outer peripheral end of the effective area of the filter, and the plurality of injection ports are the presence of the filter. A plurality of first injection ports arranged on a first straight line from the inner peripheral end of the region to the outer peripheral end, and from the inner peripheral end to the outer peripheral end of the effective region of the filter, the first A plurality of second injection ports arranged on a second straight line parallel to the straight line, and the plurality of first injection ports include a third injection port and a fourth injection port adjacent to each other. The plurality of second injection ports include a fifth injection port, and the third injection port and the fourth injection port are a portion of the third injection port facing each other and the fourth injection port. The range hood is in contact with a concentric circle centered on the central axis at the injection port portion, and the fifth injection port is located between the concentric circles.

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