JP6322802B2 - Range hood with cleaning function - Google Patents

Description

  The present invention relates to a range hood with a cleaning function for cleaning an oil collecting part with a cleaning liquid.

  Conventionally, as this type of range hood, there is known a type in which a water storage tank for storing a cleaning liquid is provided and a filter is immersed in the water storage tank for cleaning. (For example, refer to Patent Document 1).

  Hereinafter, the range hood is demonstrated, referring FIG. 6 and FIG.

  As shown in FIGS. 6 and 7, the range hood 101 is attached to the upper portion of the cooking appliance 102, and the exhaust fan motor 109 inside the range hood 101 removes oil smoke generated when the cooking appliance 102 is used from the rectifying plate 103 to the suction port 177. Then, the air is sucked in through the ventilation path 178 and the filter 105 and discharged to the outside from the discharge port 106. The filter 105 is attached to the ventilation path of oil smoke and removes oil and dust contained in the oil smoke. The filter 105 has a disk structure, and a rotation shaft 110 is provided at the center of the filter 105 and can be rotated by a motor 120. A cleaning tank 104 is provided below the filter 105, and is configured to cover the lower half surface of the filter 105 from the rotating shaft in a non-contact manner.

  When the cleaning switch 114 prepared for the operation switch 108 shown in FIG. 7 is pressed, the water storage pump 107 starts sucking up the cleaning liquid in the water storage tank 112. In the cleaning tank 104, the cleaning liquid supplied from the water storage pump 107 is stored in the tank and the filter 105 is immersed.

  A laser transmitter 121 and a laser receiver 115 that transmit laser light are attached to the side surface of the cleaning tank 104, and the water level is detected by detecting the level of the cleaning liquid.

  When supplying the cleaning liquid to the cleaning tank 104 for performing the filter cleaning, after the cleaning liquid is detected at a predetermined water level, the supply of the cleaning liquid is stopped and the filter 105 is cleaned. When the water level rises, the water level is controlled by draining with the drain valve 179. Thereby, there is no liquid leakage and filter cleaning can be performed effectively.

JP 2008-175501 A

  In such a conventional range hood, in order to detect the water level of the washing tank, it is determined whether the water level is insufficient after the washing operation. In that case, the washing liquid must be supplied to the water tank again, and the washing is performed again. There was a problem that it took a lot of time to do.

  In addition, since the water level detection unit is provided in the cleaning tank filled with the dirty cleaning liquid after the cleaning operation, it becomes difficult to use an inexpensive mechanism such as a float sensor and to ensure reliability. There was a problem that contact type detection was necessary.

  The present invention solves such a conventional problem, and since it determines whether the water level is insufficient before performing the cleaning operation, it does not require much time until re-cleaning, and the cleaning liquid can be obtained by an inexpensive method. It aims at providing the range hood with a washing function which can detect the water level of water.

In order to achieve the above object, the range hood according to one aspect of the present invention has a hot water supply tray having an opening on the upper surface, an opening on the lower surface, and a tray storage unit that can store the hot water tray from the opening, a hot water supply pump for supplying washing water to wash the casing projects downwardly from the top surface of the tray housing unit, and a cleaning liquid inlet in communication with the hot water supply pump, the tray accommodating unit, the drainage tray from the opening A drain port for discharging the cleaning liquid in the cleaning casing to the drain tray, and an opening / closing valve provided in the drain port for switching between storage and drainage of the cleaning liquid in the cleaning casing. , provided at a position close to the cleaning liquid suction port, comprising: a water level detection means projecting downwardly, and said water level sensing means, to move up and down with buoyancy by the cleaning solution Comprising a float, a float holding portion for holding the float, and a reed switch OFF is switched by the float, the reed switch, and is provided inside the float holder.

  By this means, a range hood with a cleaning function can be obtained that does not require much time for re-cleaning when the level of the cleaning liquid is insufficient.

  Another means is that the cleaning cannot be started when the lack of the level of the cleaning liquid is detected.

  By this means, it is possible to obtain a range hood with a cleaning function capable of preventing the start of cleaning when the level of the cleaning liquid is insufficient.

  Another means is to display a lack of water level when the lack of water level of the cleaning liquid is detected.

  By this means, a range hood with a cleaning function capable of notifying the user that the cleaning liquid needs to be replenished is obtained.

  Another means is that the water level detection means is a float sensor that moves up and down by buoyancy caused by the cleaning liquid.

  By this means, it is possible to obtain a range hood with a cleaning function that can detect a lack of water level with a simple structure and low cost without using expensive parts.

  Further, the other means integrates the cleaning liquid suction port and the water level detection means.

  By this means, when the hot water supply tray is set in the hot water supply tray storage part, a range hood with a cleaning function is obtained in which the cleaning liquid in the hot water supply tray is difficult to spill.

According to the present invention, it can detect insufficient water level at the stage of attaching the water heater tray before washing, can provide no cleaning function range hood of it takes a lot of time to re-wash. In addition, there is no need to increase the opening for inserting the cleaning liquid inlet and the water level detection means on the top surface of the hot water tray, and when setting the hot water tray in the tray storage section, the range with a cleaning function prevents the cleaning liquid in the hot water tray from spilling. Can provide food.

  In addition, since the cleaning cannot be started when the water level shortage of the cleaning liquid is detected, it is possible to provide a range hood with a cleaning function capable of preventing the cleaning from being started when the water level of the cleaning liquid is insufficient.

  Moreover, when the lack of the water level of the cleaning liquid is detected, the lack of the water level is displayed, thereby providing a range hood with a cleaning function that can notify the user that the cleaning liquid needs to be replenished.

  In addition, since the water level detection means is a float sensor that moves up and down by buoyancy caused by the cleaning liquid, it is possible to provide a range hood with a cleaning function that can detect a shortage of the water level with a simple structure and low cost, and can prevent insufficient filter cleaning.

  Further, by integrating the cleaning liquid suction port and the water level detection means, the opening for inserting the cleaning liquid suction port and the water level detection means on the top surface of the hot water tray can be further reduced, and when setting the hot water supply tray in the hot water tray storage part, It is possible to provide a range hood with a cleaning function that is less likely to spill the cleaning solution in the hot water tray.

Sectional drawing seen from the front of the range hood of Embodiment 1 of this invention Side sectional view of the same range hood Partial enlargement of the periphery of the float holding part in Fig. 1 of the same range hood Perspective view of impeller of same range hood The elements on larger scale of the periphery of the float holding | maintenance part of Embodiment 2 of this invention Side view showing a conventional range hood Perspective view showing the same range hood

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

(Embodiment 1)
As shown in FIG. 1 to FIG. 3, the range hood of the present embodiment has a user's side that collects oil smoke generated from the cooking utensil, dust floating around the cooking utensil, etc. above the cooking utensil (not shown). For example, a rectangular hood 2 provided with an intake port 1 is fixed to a wall surface 3 with screws, and an exhaust port 5 communicating with the outside via a duct 4 is provided on the top surface of the hood 2. 2, an electric motor 6, an impeller 8 attached to the rotating shaft 7 of the electric motor 6, and a cleaning casing 9 including the impeller 8 are arranged, and the intake port 1 and the exhaust port are disposed through the impeller 8. 5 is formed.

  Further, for example, a flat plate rectifying plate 11 is disposed at the intake port 1 of the hood 2 to increase the suction air speed around the rectifying plate 11.

  The electric motor 6 may be AC or DC, but preferably DC, because the rotation of the impeller 8 can be easily controlled.

  Moreover, although the detailed description of the impeller 8 is mentioned later, it is because the sirocco fan which is a centrifugal fan is preferable as a kind, and a pressure can be raised.

  Below the cleaning casing 9, a tray storage portion 12 having a box shape and an open bottom surface is provided. Inside the tray storage portion 12, a hot water supply tray 14 for storing a cleaning liquid 13 for cleaning the impeller 8, and a blade A drain tray 15 for receiving drainage after washing of the car 8 is detachably housed through a partition wall.

  A hot water tray lid 18 and a drain tray lid 19 having a water inlet 16 and a drain outlet 17 open at the center are attached to the top surfaces of the hot water tray 14 and the drain tray 15, respectively. It keeps sealing like a tapper so that it won't spill.

  In addition, a pipe-shaped cleaning liquid suction port 20 projects downward on the top surface of the tray storage unit 12, and the lower end of the cleaning liquid suction port 20 has a lower end of the hot water supply tray 14 in a state where the hot water supply tray 14 is stored in the tray storage unit 12. It comes close to the bottom.

  The proximity is about 3 mm, and the amount of the cleaning liquid 13 remaining in the hot water supply tray 14 can be reduced without hindering the suction of the cleaning liquid 13 from the cleaning liquid suction port 20.

  The upper end of the cleaning liquid suction port 20 is connected to the pump suction port 22 of the hot water supply pump 21, and the pump discharge port 23 of the hot water supply pump 21 is connected to the cleaning casing 9 via a tube 24.

  A columnar float holding part 26 with a reed switch 25 that is turned on and off by magnetic force is projected downward immediately adjacent to the cleaning liquid suction port 20, and a donut-like float 27 is formed on the outer periphery of the float holding part 26. Is attached to move up and down.

  Further, a magnet 28 is embedded in the inner periphery of the float 27, and the reed switch 25 is turned on when the float 27 is raised, and the reed switch 25 is turned off when the float 27 is lowered.

  The float 27 is a material smaller than the density of the cleaning liquid 13 and rises by buoyancy due to the cleaning liquid 13 put in the hot water supply tray 14.

  A drain outlet 29 is provided at the lower end of the cleaning casing 9, and an opening / closing valve 30 for storing and discharging the cleaning liquid 13 in the cleaning casing 9 is provided at the drain outlet 29. It is provided so that the receiving port 17 is located.

  The size of the water supply port 16 of the hot water supply tray lid 18 is made as small as possible so that the cleaning liquid suction port 20 and the float 27 pass through when the hot water supply tray 14 is set in the tray storage portion 12.

  The size of the drain receiving port 17 of the drain tray lid 19 is made as small as possible so that the drainage of the cleaning liquid 13 from the on-off valve 30 can pass through.

  As shown in FIG. 4, the impeller 8 includes a plurality of blades 31, and a plurality of ring-shaped oil collecting portions 32 are attached to the inside of the impeller 8 at a predetermined distance. When the electric motor 6 is operated while oil smoke is generated during cooking, the impeller 8 rotates, and air containing oil smoke and dust is sucked from the intake port 1 and passes through the ventilation path 10 and passes through the inside of the impeller 8. When passing, oil or dust collides with the ring-shaped oil collecting portion 32 and is collected, and after the air from which the oil and dust have been removed passes through the cleaning casing 9, it passes through the exhaust port 5 and the duct 4 to the outside. To be discharged. If this is repeated, oil and dust are accumulated in the oil collecting part 32 and the blade 31 of the impeller 8, causing clogging, and reducing the amount of exhausted air.

  In order to prevent a reduction in the amount of discharged air, the oil collecting unit 32 and the blade 31 are cleaned. First, a specified amount of the cleaning solution 13 is put in the hot water supply tray 14 and set in the tray storage unit 12.

  The drain tray 15 is set in the tray storage unit 12 with the cleaning liquid 13 being empty.

  Then, the float 27 is raised by the buoyancy caused by the cleaning liquid 13, and the reed switch 25 is turned on by the magnetic force of the magnet 28.

  Next, when the cleaning switch 33 on the front surface of the hood 2 is pressed, the on / off valve 30 is closed according to an operation instruction from the control unit 34, the cleaning liquid 13 in the hot water supply tray 14 is pumped up by the hot water supply pump 21, and the cleaning is performed through the tube 24. It is supplied into the casing 9 and stored.

  When the electric motor 6 is operated at the same time, the blade 31 and the oil collecting part 32 of the impeller 8 are immersed in the cleaning liquid 13 and cleaned.

  Then, after cleaning for a certain time (for example, about 10 minutes), the on-off valve 30 is opened and the cleaning liquid 13 is discharged to the drain tray 15.

  The above is the normal cleaning operation.

  On the other hand, when the amount of the cleaning liquid 13 to be put in the hot water supply tray 14 is less than the specified amount, the float 27 does not rise to the position where the reed switch 25 is turned on. In this case, even when the cleaning switch 33 is pressed, A program is input to the control unit 34 so as not to start cleaning.

  In that case, the LED 35 provided in the vicinity of the cleaning switch 33 is lit or blinked to notify the user that the water level is insufficient.

  In the above configuration, the cleaning liquid 13 is put in the hot water supply tray 14 and the water level shortage is detected when the tray storage unit 12 is attached, so that the cleaning cannot be started. The cleaning is not interrupted.

  Further, since the cleaning liquid suction port 20 and the float holding unit 26 are provided in close proximity to each other, the water supply port 16 of the hot water supply tray cover 18 can be made small, and the cleaning liquid placed in the hot water supply tray 14 when the hot water supply tray 14 is set in the tray storage unit 12. 13 can be made difficult to spill.

  Further, since the water level can be detected by the float 27 that moves up and down by the buoyancy caused by the cleaning liquid 13, it is possible to detect a lack of water level with a simple structure and at a low cost.

  Further, when the water level of the cleaning liquid 13 is insufficient, the LED 35 is turned on or blinked to notify the user that the water level is insufficient, so that the user can be notified that the cleaning liquid 13 needs to be replenished.

(Embodiment 2)
In FIG. 5, the difference from the first embodiment is that the cleaning liquid suction port 20 and the float holding unit 26 are integrated, and a float 27 is attached to the periphery thereof.

  With the above configuration, the water supply port 16 of the hot water supply tray cover 18 can be further reduced, and the cleaning liquid 13 can be further prevented from being spilled when the cleaning liquid 13 is placed in the hot water supply tray 14 and set in the tray storage unit 12.

  The present invention detects the water level of a cleaning liquid in a range hood having a cleaning function, and is also useful for a ventilator that requires a similar function.

DESCRIPTION OF SYMBOLS 1 Intake port 2 Hood 3 Wall 4 Duct 5 Exhaust port 6 Electric motor 7 Rotating shaft 8 Impeller 9 Washing casing 10 Ventilation path 11 Current plate 11 Tray storage part 13 Cleaning liquid 14 Hot water tray 15 Drain tray 16 Water supply port 17 Drain outlet 18 Hot water supply Tray cover 19 Drain tray cover 20 Cleaning liquid suction port 21 Hot water pump 22 Pump suction port 23 Pump discharge port 24 Tube 25 Reed switch 26 Float holder 27 Float 28 Magnet 29 Drain port 30 On-off valve 31 Blade 32 Oil collecting unit 33 Cleaning switch 34 Control Part 35 LED

Claims (4)

A hot water tray with an opening on the top surface;
An opening is provided on the lower surface, and a tray storage portion that can store the hot water supply tray from the opening,
A hot water supply pump for supplying cleaning liquid to the cleaning casing;
A cleaning liquid suction port that protrudes downward from the top surface of the tray storage unit and communicates with the hot water supply pump ;
The tray storage unit can store a drain tray from the opening,
A drain outlet provided in the cleaning casing, for discharging the cleaning liquid in the cleaning casing to the drain tray;
An on-off valve that is provided at the drain and switches between storage and drainage of the cleaning liquid in the cleaning casing;
A water level detecting means provided at a position close to the cleaning liquid suction port and projecting downward;
The water level detecting means is
A float that moves up and down with the buoyancy of the cleaning liquid;
A float holding unit for holding the float;
A reed switch that is turned on and off by the float, and
A range hood with a cleaning function, wherein the reed switch is provided inside the float holding part. 2. The range hood with a cleaning function according to claim 1, wherein cleaning cannot be started when an insufficient water level of the cleaning liquid is detected. The range hood with a cleaning function according to claim 1 or 2, wherein when the water level shortage of the cleaning liquid is detected, the water level shortage is displayed. The range hood with a cleaning function according to claim 1, wherein the cleaning liquid suction port and the water level detection means are integrated.

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