JP2017125658A - Range hood - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable washing of a whole impeller including a main plate and to maintain good appearance of the impeller after washing.SOLUTION: In a range hood which washes an impeller 10 by storing a washing liquid 51 in a washing casing 50, the washing liquid injected from a sprinkler nozzle 54 included at a casing back plate 34 goes through a washing liquid introduction opening 29 and a washing liquid direction changing plate 30. Thereby, fouling at a main plate 17 of the impeller 10 and in its vicinity is peeled off.SELECTED DRAWING: Figure 1

Description

  The present invention relates to removal of dirt from an oil collecting mechanism attached to a range hood.

  Conventionally, as shown in FIG. 8, this type of range hood has a hood 102 provided with a suction port 101 for collecting oil smoke generated from a cooking utensil or dust floating around the cooking utensil (not shown). Installed on the upper wall surface 103, the hood 102 is provided with a discharge port 105 on the top surface communicating with the outdoors via a duct 104, and an electric motor 107 having a rotating shaft 106 arranged substantially horizontally, and a rotation An impeller 108 attached to the shaft 106 and a cleaning casing 109 that includes the impeller 108 are disposed, and a ventilation path 110 that connects the suction port 101 and the discharge port 105 through the impeller 108 is formed. Further, a flat plate rectifying plate 111 is disposed in the vicinity of the suction port 101 of the hood 102.

  Below the cleaning casing 109, a water storage device 113 for storing the cleaning liquid 112 and a water supply pump 114 are provided. The cleaning casing 109 is provided with a water spray nozzle 115 connected from the water supply pump 114. A hole 116 is provided in the lower end portion of the cleaning casing 109, an opening / closing valve 117 for storing and discharging the cleaning liquid 112 is provided in the cleaning casing 109, and a drain tray 118 is formed below the opening / closing valve 117.

  As shown in FIG. 9, the impeller 108 of the centrifugal fan includes a plurality of blades 120 erected on the main plate 119, and a ring-shaped oil collecting mechanism 121 is provided inside the impeller 108 from the blades 120 to 15. A plurality of sheets are attached at a distance of about [mm] and spaced in the direction of the rotating shaft 106.

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

  At the time of cleaning, a portion below the rotating shaft 106 of the impeller 108 is immersed in the cleaning liquid 112 supplied from the water storage device 113 in the cleaning casing 109. The impeller 108 and the oil collecting mechanism 121 are contaminated with the use of the range hood. By rotating the impeller 108 with the rotating shaft 106, the part to which dirt has adhered can be cleaned by immersing it in the cleaning liquid 112 (see, for example, Patent Document 1).

JP 2014-062710 A

  In such a conventional range hood, it has been difficult to sufficiently clean the main plate portion of the impeller to which dirt is most likely to adhere and the oil repair mechanism portion in the vicinity of the main plate portion.

  The present invention solves the above-described conventional problems, and an object thereof is to provide a range hood capable of cleaning the main plate portion of the impeller and the oil repair mechanism near the main plate portion.

  In order to achieve the above object, the present invention provides a main plate connected to a rotating shaft of an electric motor, a plurality of blades erected in the vertical direction on the outer peripheral portion of the main plate, and oil circulated on the inner peripheral side of the blade A range hood comprising an impeller having a collection mechanism and a cleaning casing for immersing the oil collection mechanism in a cleaning liquid, wherein the cleaning casing includes a casing back plate facing the main plate; A plurality of cleaning liquid inlets arranged on an annular ring at an inner peripheral portion of the oil collecting mechanism section, and comprising a watering nozzle installed on the casing back plate and an on-off valve for storing and discharging the cleaning liquid. And a cleaning liquid diverting plate that extends from the inner peripheral side of the ring inside the impeller and covers the cleaning liquid introduction port, and the water spray nozzle has the cleaning liquid through the cleaning liquid introduction opening. Attached to cleaning liquid direction variable plate Are those arranged like that, thereby is to achieve the intended purpose.

  According to the present invention, the main plate connected to the rotating shaft of the electric motor, the plurality of blades erected in the vertical direction on the outer peripheral portion of the main plate, and the oil collecting mechanism portion circulated on the inner peripheral side of the blade. A range hood comprising an impeller having a cleaning casing for immersing the oil collecting mechanism in a cleaning liquid, wherein the cleaning casing is provided on a casing back plate facing the main plate and on the casing back plate. A watering nozzle installed, and an on-off valve for storing and discharging the cleaning liquid, wherein the main plate has a plurality of cleaning liquid inlets arranged on a ring at an inner peripheral portion of the oil collecting mechanism section, and the impeller A cleaning liquid diverting plate extending from the inner peripheral side of the ring to cover the cleaning liquid introduction port is provided on the inner side, and the water spray nozzle is attached to the cleaning liquid direction variable plate through the cleaning liquid introduction opening. Arranged to water And in oil repair mechanism of the main plate portion and the main plate portion near the impeller can be easily cleaned.

Sectional block diagram which shows the range hood of Embodiment 1 of this invention Types of impellers for the same range hood Front sectional view of the configuration of the impeller of the same range hood Configuration oblique view of the impeller of the same range hood An oblique view showing the inner structure of the impeller of the same range hood Casing configuration diagram of the same range hood Cross-sectional view from the direction perpendicular to the rotation axis showing the characteristics of the sirocco fan of the same range hood Side cross-sectional configuration diagram showing a conventional range hood The figure which shows the structure of the impeller and oil collection mechanism part of the same range hood Front cross-sectional configuration diagram showing the same range hood

  The range hood according to claim 1 of the present invention includes a main plate connected to a rotating shaft of an electric motor, a plurality of blades erected in the vertical direction on the outer peripheral portion of the main plate, and oil circulated on the inner peripheral side of the blade. A range hood comprising an impeller having a collection mechanism and a cleaning casing for immersing the oil collection mechanism in a cleaning liquid, wherein the cleaning casing includes a casing back plate facing the main plate; And a water spray nozzle installed on the casing back plate, and an on-off valve for storing and discharging the cleaning liquid, and the main plate includes a plurality of cleaning liquid inlets arranged on the inner periphery of the oil collecting mechanism section, A cleaning liquid deflecting plate that extends from the inner peripheral side of the annular shape inside the impeller and covers the upper part of the cleaning liquid introduction port, and the water spray nozzle has the cleaning liquid through the cleaning liquid introduction opening. Direction of the cleaning liquid It is obtained by arranged to impinging on the varying plate.

  Accordingly, when cleaning the impeller with dirt attached, if the cleaning liquid is sprayed from the watering nozzle while rotating the impeller, the sprayed cleaning liquid is introduced into the cleaning liquid introduction opening provided on the main plate of the impeller The running water of the cleaning liquid reaches the cleaning liquid diverting plate through the section. When the water has landed, centrifugal force is generated in the cleaning liquid. When the adhesive force generated between the cleaning liquid and the cleaning liquid diverting plate is larger than the centrifugal force generated in the cleaning liquid, the cleaning liquid is guided along the circumferential direction along the cleaning liquid diverting plate. Further, when the adhesive force generated between the cleaning liquid and the cleaning liquid diverting plate is smaller than the centrifugal force generated in the cleaning liquid, the cleaning liquid is separated from the cleaning liquid diverting plate, and the main plate portion and the It collides with the oil repair mechanism near the main plate part of the impeller and removes the dirt on the surface. Further, the cleaning liquid that has landed moves while peeling off dirt to the outer peripheral side by the centrifugal force generated by the rotation of the impeller, and falls from the outer periphery of the main plate to the cleaning casing. Thus, the cleaning liquid is stored in the bottom portion of the cleaning casing.

  By rotating the impeller while the cleaning liquid is stored in the bottom portion of the cleaning casing, the blades of the impeller and the entire oil collecting mechanism are also immersed and contacted with the cleaning liquid to clean the oil stains. be able to.

  Therefore, the dirt is most likely to adhere to the main plate portion and the oil repair mechanism near the main plate portion. However, this portion is difficult to clean only by rotating the impeller in the stored cleaning casing. Since the cleaning liquid can be directly applied to the main plate portion and the oil repair mechanism near the main plate portion, it is possible to obtain a sufficient cleaning effect, which not only prevents clogging but also has a beautiful appearance. There is an effect that can be maintained.

  In addition, since the watering nozzle is provided on the casing back plate, the oil droplets contained in the airflow sucked into the range hood have a structure that does not easily collide, and the spraying nozzle of the watering nozzle is difficult to get dirty. There is an effect. Also, even when cleaning water containing oily dirt stored in the bottom of the cleaning casing is rolled up by the rotation of the impeller and scattered as water droplets in the centrifugal direction of the impeller during cleaning, the inside of the orifice Dirt does not fly directly to the watering nozzle located in the upper part of the peripheral surface, and there is an effect that the hole of the watering nozzle is difficult to get dirty.

  Moreover, the range hood of Claim 2 is equipped with the heater which raises water temperature upstream of the injection nozzle of the said watering nozzle.

  Thereby, the washing | cleaning liquid to inject can be injected as high temperature water or a heating steam. Therefore, there is an effect that the temperature of the attached oil is raised to promote softening and the cleaning effect can be enhanced. In addition, the temperature inside the range hood can be raised to prevent the generation of mold and bacteria.

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

(Embodiment 1)
As shown in FIG. 1, in the first embodiment, the range hood 1 has a main body 2 installed on a wall surface 3 and a duct 5 connected to a discharge port 4 to communicate with the outdoors.

  The main body 2 is a box provided with a hood portion 6 so as to collect oil smoke generated from the cooking utensil or dust floating around the cooking utensil (not shown). 7 is provided with a suction port 8, and the top surface 9 is provided with the discharge port 4.

  Inside the main body 2, a blower 11 having an impeller 10 and a cleaning device 12 for cleaning the impeller 10 are provided. As shown in FIG. 2, there are several types of impellers 10 such as a sirocco fan, a turbo fan, and a plate fan, and the present invention can be applied to any of these types. Use a centrifugal fan. That is, the impeller 10 has a cage-type cylindrical shape.

  In addition to the impeller 10, the blower 11 includes a motor 13 that rotates the impeller 10 and a casing 14 that surrounds the impeller 10.

  As shown in FIGS. 3 and 4, the impeller 10 includes at least a plurality of blades 15, an annular side plate 16, and a circular main plate 17. The blade 15 is disposed so that both end portions are sandwiched between the side plate 16 located on the blower inlet 18 side of the blower 11 and the main plate 17 located on the motor 13 side.

  As shown in FIG. 5, the main plate 17 includes a conical surface 22 that protrudes toward the side plate 16 in the axial direction at the center with respect to the outer periphery. In other words, the impeller 10 also has a conical surface 22 that is inclined so as to rise from the outer peripheral direction of the circle toward the rotation shaft 21 that is the central axis.

  A plurality of blades 15 are arranged in an annular shape on the outer peripheral portion on the main plate 17. That is, the blade 15 is erected in the vertical direction from the main plate 17 and arranged on the same circumference.

  Further, a plurality of ring-shaped oil collecting mechanisms 28 that circulate around the inner periphery of the impeller 10 are attached to the inner peripheral portion of the blade 15 at a certain distance from each other in the direction of the rotation shaft 21.

  Further, on the inner peripheral side of the oil collecting mechanism 28, a plurality of cleaning liquid introduction openings 29 arranged on the ring, and a cleaning liquid introduction opening extending from the inner peripheral side of the ring inside the impeller 10. A cleaning liquid diverting plate 30 is provided.

  The casing 14 shown in FIG. 6 is provided with the blower inlet 18 and the blower outlet 31.

  The casing 14 includes a scroll plate 32, a casing front plate 33, a casing back plate 34, a tongue portion 35, and an extension plate 36 provided on the extension of the scroll plate 32. An extension plate 37 provided on the extension of the tongue 35 is provided. In the casing 14, the extension plate 36 and the extension plate 37 are not essential.

  The casing front plate 33 and the casing back plate 34 are flat plates arranged with a gap corresponding to the height direction of the impeller 10.

  The scroll plate 32 is a curved plate that expands the air path toward the rotation direction of the impeller 10 around the tongue 35 on the outer periphery of the impeller 10. The extended plate 36 is a flat plate in which the scroll plate 32 is further extended to the blower outlet 31. The extension plate 37 is a flat plate extending from the tongue 35 to the blower outlet 31 from the counter-rotating direction side.

  Further, the scroll plate 32 is disposed over the main part of the side surface portion 38 of the casing 14. The side surface of the casing 14 occupies a range of about 300 degrees from the tongue portion 35 in the rotational direction of the impeller 10.

  The blower outlet 31 is formed in the side surface portion 38 of the casing 14 so as to be surrounded by the end portions of the casing front plate 33, the casing back plate 34, the extension plate 36, and the extension plate 37. When the extension plate 36 and the extension plate 37 are not provided, the casing front plate 33, the casing rear plate 34, the scroll plate 32, and the tongue 35 may be surrounded by the end portions.

  The casing 14 includes an orifice 39 at a substantially central portion of the casing front plate 33. The blower inlet 18 is in the inner periphery of the orifice 39. In FIG. 1, the motor 13 is disposed on the casing back plate 34 side. The impeller 10 is rotated from the motor 13 through the shaft 40.

  The casing 14 is arranged so that the casing front plate 33 and the casing rear plate 34 stand up inside the main body 2. That is, the impeller 10 is disposed with the rotation shaft 21 sideways, and the blower outlet 31 is disposed upward.

  The blower outlet 31 is connected to the outlet 4 of the main body 2. The blower inlet 18 opens inside the main body 2 and communicates with the suction port 8.

  The motor 13 includes a rotation speed sensor (not shown) and a current sensor (not shown), and detects the rotation speed and current value of the motor. This is because a Hall IC is preferable as the rotation speed sensor, and the cost is low and the accuracy is good.

  The cleaning device 12 includes a cleaning casing 50 that is also the casing 14 of the blower 11, a water storage device 52 that stores the cleaning liquid 51, a water supply pump 53, a watering nozzle 54, and a drain tray 55.

  The water storage device 52 is provided below the cleaning casing 50.

  The water supply pump 53 supplies the cleaning liquid 51 stored in the water storage device 52 to the watering nozzle 54 and is provided inside the main body 2.

  The cleaning casing 50 is a machine body capable of storing the cleaning liquid 51 when cleaning the blade 15 and the oil collecting mechanism 28, and includes at least a casing back plate 34 facing the main plate 17 from the outside of the impeller 10, and a lower end. The hole 56 is provided with an opening / closing valve 57 for storing and discharging the cleaning liquid 51 in the cleaning casing 50, and a drain tray 55 is disposed below the opening / closing valve 57. The storage amount of the cleaning liquid 51 as the cleaning casing 50 only needs to be such that part of the blade 15 and the oil collecting mechanism 28 is immersed.

  The watering nozzle 54 is provided on the casing back plate 34.

  As shown in FIG. 6, the watering nozzle 54 is provided so as to spray water from the casing back plate 34 toward the casing front plate 33. Specifically, the watering nozzle 54 is provided so as to penetrate the casing back plate 34 so that the injection port of the watering nozzle 54 faces the casing front plate 33. Further, as shown in FIG. 1, the cleaning water sprayed from the watering nozzle 54 is provided so as to pass through the cleaning liquid introduction opening 29 provided in the impeller 10. In the present embodiment, an example in which the watering nozzles 54 are arranged at one place is shown, but they may be arranged at a plurality of places as necessary.

  FIG. 7 is a view through the casing front plate 33 when viewed from the vertical plane of the rotating shaft 21, but the watering nozzle 54 and the cleaning liquid introduction opening 29 are disposed at overlapping positions when viewed from this direction. .

  Hereinafter, the spray position of the watering nozzle 54 and the behavior of the cleaning liquid 51 will be described in detail.

  When the sprayed cleaning liquid passes through the cleaning liquid introduction opening 29, it collides with a cleaning liquid diverting plate 30 that is connected to the cleaning liquid introduction opening 29. Since the impinging cleaning liquid adheres to the cleaning liquid diverting plate 30, a centrifugal force is generated in the cleaning liquid when the impeller 10 is rotating. At this time, when the adhesive force generated between the cleaning liquid 51 and the cleaning liquid diverting plate 30 is larger than the centrifugal force generated in the cleaning liquid 51, the cleaning liquid 51 is guided along the circumferential direction while adhering to the cleaning liquid diverting plate 30. It becomes a behavior. When the adhesive force generated between the cleaning liquid 51 and the cleaning liquid diverting plate 30 is smaller than the centrifugal force generated in the cleaning liquid 51, the cleaning liquid 51 is peeled off from the cleaning liquid diverting plate 30, and the main plate of the impeller 10 in the outer circumferential direction. It collides with the catching mechanism portion 28 in the vicinity of the 17 portion and removes the dirt on the surface. Furthermore, the cleaning liquid 51 that has landed moves to the outer peripheral side while removing the dirt on the main plate 17 by centrifugal force generated by the rotation of the impeller 10, and falls from the outer periphery of the main plate 17 to the cleaning casing. As a result, the cleaning liquid 51 is stored in the cleaning casing 50.

  In the above configuration, when the motor 13 (preferably a DC motor) is operated when oily smoke is generated during cooking, the impeller 10 rotates, and air containing oily smoke or dust is sucked from the suction port 8 and the main body. 2, after passing through the impeller 10, oil and dust collide with the ring-shaped oil collecting mechanism 28 and are collected, and after the removed air passes through the cleaning casing 50. The air is discharged to the outside through the duct 5 through the discharge port 4.

  If this is repeated, oil and dust accumulate in the oil collecting mechanism 28, the blade 15 of the impeller 10, and the main plate 17, causing clogging, leading to a reduction in the amount of discharged air, and aesthetics being impaired. Will be. Therefore, the oil collecting mechanism 28 and the blade 15 of the impeller 10 are cleaned in order to prevent a reduction in the discharged air volume.

  First, the motor 13 is stopped, the on-off valve 57 is closed, and the cleaning liquid 51 stored in the water storage device 52 is pumped up by the water supply pump 53 and supplied to the watering nozzle 54. It is assumed that the cleaning liquid 51 in the water storage device 52 is supplied in advance. Thereafter, when the cleaning liquid 51 is sprayed from the water nozzle 54 while rotating the motor 13, the sprayed cleaning liquid 51 reaches the main plate 17 and its vicinity via the cleaning liquid introduction opening 29 and the cleaning liquid diverting plate 30. When the water has landed, the dirt is peeled off by the spraying pressure of the cleaning liquid 51 from the watering nozzle 54. Since the main plate 17 is rotating, even if the watering nozzle 54 and the jetting direction are fixed, water can be landed on the entire inner periphery of the main plate 17. Further, the cleaning liquid 51 that has landed moves to the outer peripheral side while removing the dirt on the main plate 17 by centrifugal force due to the inclination of the main plate 17 and the rotation of the impeller 10, and falls from the outer periphery of the main plate 17 to the cleaning casing 50. .

  As a result, the cleaning liquid 51 is stored in the bottom portion of the cleaning casing 50. In addition, by rotating the motor 13 with the cleaning liquid 51 stored in the bottom portion of the cleaning casing 50, the entire circumference of the oil collecting mechanism 28 and the blade 15 of the impeller 10 are immersed in the cleaning liquid 51 and cleaned. Is done. The drainage and drying are performed by opening the on-off valve 57 and moving the cleaning liquid 51 to the drainage tray 55 and blowing it to blow.

  As described above, in addition to the oil collecting mechanism 28 and the blade 15 of the impeller 10 in which dirt is accumulated by a series of cleaning steps, the blade including the main plate 17 that is difficult to clean because the cleaning liquid 51 is not wet and spread only by rotating the impeller 10. The entire vehicle 10 can be cleaned, and not only can clogging be prevented, but also the beauty can be kept clean.

  Alternatively, a heater may be wound around the base of the watering nozzle 54 from outside to mount the cleaning liquid 51 into hot water, heating steam, or the like. Thereby, the cleaning liquid 51 to be sprayed can be sprayed as high-temperature water or heated steam. The temperature of the attached oil can be raised to promote softening and enhance the cleaning effect. Moreover, the effect that the temperature inside a range hood can be raised and generation | occurrence | production of mold | fungi and bacteria can be expected.

  Further, a plurality of watering nozzles 54 may be arranged, and the spray shape may be not only a round shape but also a holocone or a slit, and the watering nozzle 54 is movable and the direction of watering may be variable. In this case, the cleaning liquid 51 can be sprayed over a wider range. The water supply of the cleaning liquid 51 to the water storage device 52 may be at a high temperature, or may be performed by adding an additive such as a surfactant or an alkali salt. Further, the water supply to the water storage device 52 may be self-contained from the water supply, or the additive may be automatically charged. A plurality of holes 56 may be provided in the cleaning casing 50 in addition to the lower end portion of the cleaning casing 50.

  In the present embodiment, the blower including the casing 14 has been described. However, as the cleaning casing 50, the scroll plate 32, the casing front plate 33, the casing back plate 34, the tongue portion 35, and the extending plate 36 are used. And not all the extension plates 37 are necessarily provided. If the machine body is formed by the casing front plate 33, the casing back plate 34, the scroll plate 32 sandwiched between the casing front plate 33, the casing rear plate 34, and the extended plate 36 on which the watering nozzle 54 is installed so that the cleaning solution 51 can be stored at the time of cleaning, the cleaning solution 51. Can be sprayed, and the sprayed cleaning liquid 51 can be stored. In this case, the scroll plate 32 does not have to gradually expand the air path. This is because the blade 15 and part of the oil collecting mechanism 28 can be immersed in the cleaning liquid 51 as long as it surrounds the lower side of the rotating shaft 21 of the impeller 10. In particular, it can be applied to a plate fan or a turbo fan that does not require a scroll plate that gradually expands the air passage.

  The range hood according to the present invention enables cleaning of the entire impeller including the main plate and maintains the aesthetic appearance of the impeller after cleaning, and can also be applied to a ventilator having a similar function.

DESCRIPTION OF SYMBOLS 1 Range hood 2 Main body 3 Wall surface 4 Outlet 5 Duct 6 Hood part 7 Lower surface 8 Suction port 9 Top surface 10 Impeller 11 Blower 12 Cleaning device 13 Motor 14 Casing 15 Blade 16 Side plate 17 Main plate 18 Blower inlet 21 Rotating shaft 22 Cone Surface 28 Oil collecting mechanism 29 Cleaning liquid introduction opening 30 Cleaning liquid diverting plate 31 Blower outlet 32 Scroll plate 33 Casing front plate 34 Casing rear plate 35 Tongue 36 Extension plate 37 Extension plate 38 Side surface 39 Orifice 40 Shaft 50 Cleaning Casing 51 Cleaning liquid 52 Water storage device 53 Water supply pump 54 Water spray nozzle 55 Drain tray 56 Hole 57 On-off valve 101 Suction port 102 Hood 103 Wall surface 104 Duct 105 Outlet port 106 Rotating shaft 107 Electric motor 108 Impeller 109 Cleaning casing 110 Through Road 111 rectifying plate 112 cleaning liquid 113 water storage apparatus 114 feed pump 115 water spray nozzle 116 hole 117 opening and closing valve 118 drainage tray 119 main plate 120 blade 121 oil collecting mechanism

Claims (2)

An impeller having a main plate coupled to a rotating shaft of an electric motor, a plurality of blades erected in the vertical direction on an outer peripheral portion of the main plate, and an oil collecting mechanism portion circulated on an inner peripheral side of the blade; A range hood provided with a cleaning casing for immersing the oil collecting mechanism in a cleaning liquid,
The cleaning casing includes a casing back plate facing the main plate, a water spray nozzle installed on the casing back plate, and an on-off valve for storing and discharging the cleaning liquid.
The main plate includes a plurality of cleaning liquid inlets disposed on an inner ring of the oil collecting mechanism, and an inner side of the impeller that extends from an inner circumferential side of the ring and the cleaning liquid inlet. A cleaning liquid diverting plate covering
The watering nozzle is a range hood arranged so that the cleaning liquid lands on the cleaning liquid direction variable plate through the cleaning liquid introduction opening. The range hood of Claim 1 provided with the heater which raises water temperature in the injection nozzle upstream of the said watering nozzle.