JP2019167779A - Sanitary washing device - Google Patents

Abstract

To provide the sanitary washing device capable of suppressing decrease in performance of a blower unit.SOLUTION: The sanitary washing device according to an embodiment comprises a blower unit and a control unit. The blower unit has a blower fan that sucks outside air, and a dust collection filter that is provided upstream of the blower fan and collects dust in air while allowing the air sucked by the blower fan to pass therethrough. The control unit drives and controls the blower fan and detects dust clogging of the dust collection filter based on a voltage value indicating a rotation speed of the blower fan.SELECTED DRAWING: Figure 3

Description

  The disclosed embodiments relate to a sanitary washing device.

  Conventionally, a sanitary washing device that cleans a user's local area includes, for example, a sanitary washing device that drives a blower fan for a certain period of time based on detection of a user entering a toilet room or sitting on a toilet seat ( Casing) Some have various air blowing units such as a deodorizing unit that sucks and deodorizes the air outside, specifically the air in the bowl part of the toilet bowl or the toilet room.

  In addition, the air blowing unit is provided with a dust collecting filter upstream of the air blowing fan, thereby suppressing dust from adhering to the air blowing fan when the air in the bowl portion of the toilet bowl or the toilet room is sucked (for example, , See Patent Document 1). In addition, the dust collection filter can be maintained by the user, and it is preferable to periodically remove the collected dust.

JP 2005-320715 A

  However, in the sanitary washing device as described above, the dust collection filter is clogged with a predetermined amount or more of dust (hereinafter referred to as dust clogging) due to a long maintenance period, etc. Various performances of various blower units were reduced with a decrease in the air volume of the blower fan. Although it is conceivable to install a new sensor in order to monitor the dust clogging of the dust collection filter, there are problems in terms of space and cost for installing the sensor.

  An object of one embodiment is to provide a sanitary washing device that can suppress a decrease in performance of a blower unit.

  A sanitary washing device according to an aspect of an embodiment collects dust in the air while passing a blower fan that sucks outside air and air that is provided upstream of the blower fan and sucked by the blower fan. And a control unit that drives and controls the blower fan, and the control unit detects dust clogging of the dust collection filter based on a voltage value indicating a rotation speed of the blower fan. It is characterized by detecting.

  According to such a configuration, it is possible to quickly cope with a decrease in the performance of the blower fan by detecting the dust clogging of the dust collection filter based on the voltage value indicating the rotation speed of the blower fan. In addition, since the dust clogging of the dust collection filter can be understood from the voltage value indicating the rotation speed of the blower fan, for example, when the dust collection filter is clogged, the rotation speed of the blower fan is increased, By extending the driving time, it is possible to suppress a decrease in performance of various blower units due to a decrease in the amount of air sucked by the blower fan.

  In the sanitary washing apparatus described above, a plurality of the blower units are provided, each of the plurality of blower units has a different use frequency, and the control unit is one blower unit having the highest use frequency among the plurality of blower units. The degree of dust clogging of the dust collecting filter of another air blowing unit is detected based on detection of the dust clogging of the dust collecting filter.

  According to this configuration, when a plurality of blower units having different usage frequencies are provided, the degree of dust clogging of the dust collection filter of the other blower unit is estimated from the dust clogging of the dust collection filter of the one blower unit having the highest usage frequency. Therefore, it is not necessary to measure only the voltage value indicating the rotation speed of the blower fan of one blower unit and measuring the voltage value indicating the rotation speed of the blower fan of the other blower unit. Thus, even when a plurality of blower units are provided, it is not necessary to measure the voltage values of all the blower units, and efficiency can be improved. In addition, the number of sensors can be reduced, and the configuration can be simplified.

  In the sanitary washing apparatus described above, the plurality of air blowing units include a first deodorizing unit that deodorizes air in the toilet room as the one air blowing unit.

  According to this configuration, since the degree of dust clogging of the dust collection filter of the other blower unit can be estimated from the dust clogging of the dust collection filter of the first deodorizing unit, the dust of the dust collection filter of the other blower unit can be estimated. In order to detect clogging, it is not necessary to measure a voltage value indicating the rotational speed of the blower fan of another blower unit. Thereby, efficiency can be achieved. In addition, the number of sensors can be reduced, and the configuration can be simplified.

  In the sanitary washing apparatus described above, the plurality of air blowing units include a second deodorizing unit that deodorizes air in the bowl portion of the toilet bowl as the other air blowing units.

  According to this configuration, since the degree of dust clogging of the dust collection filter of the second deodorizing unit can be estimated from the dust clogging of the dust collection filter of the first deodorizing unit, the dust collection filter of the second deodorizing unit can be estimated. Therefore, it is not necessary to measure a voltage value indicating the rotation speed of the blower fan of the second deodorizing unit in order to detect the dust clogging. Thereby, efficiency can be achieved. In addition, the number of sensors can be reduced, and the configuration can be simplified.

  In the sanitary washing apparatus described above, the plurality of blower units include, as the other blower units, a dew condensation prevention fan that is the blower fan and a dew condensation prevention filter that is the dust collection filter. It is characterized by providing.

  According to this configuration, the degree of dust clogging of the dew condensation prevention filter of the dew condensation prevention unit can be estimated from the dust clogging of the dust collection filter of the first deodorization unit. It is not necessary to measure the voltage value of the fan drive for preventing condensation in order to detect clogging. Thereby, efficiency can be achieved. In addition, the number of sensors can be reduced, and the configuration can be simplified.

  In the sanitary washing device described above, the control unit sets a threshold value corresponding to the dust clogging of the dust collection filter of the other air blowing unit for the voltage value of the one air blowing unit, and the threshold value is set. Further, the degree of dust clogging of the dust collecting filter of the other air blowing unit is detected based on the voltage value.

  According to this configuration, the dust collecting filter of one air blowing unit is made to correspond to the degree of dust clogging of the dust collecting filter of the one air blowing unit having the highest use frequency. Based on the degree of dust clogging, the dust clogging of the dust collection filter of another blower unit can be detected. In this case, it is also possible to set a plurality of threshold values for the voltage value indicating the rotational speed of the blower fan of one blower unit.

  In the sanitary washing device described above, the control unit extends the driving time of the blower fan of the blower unit when detecting the dust clogging in the blower unit.

  According to such a configuration, it is possible to reliably suppress a decrease in performance due to dust clogging of the dust collection filter in the blower unit.

  The sanitary washing apparatus described above further includes a notification unit, and when the control unit detects the dust clogging in the blower unit, the control unit causes the notification unit to notify at the timing when the dust clogging is detected.

  According to such a configuration, it is possible to prompt the user to perform maintenance such as cleaning of the dust collection filter by notifying at the timing when dust clogging of the dust collection filter is detected, and it is possible to suppress a decrease in performance of the blower unit. .

  In the sanitary washing apparatus described above, each of the dust collecting filters in the plurality of air blowing units is integrally formed.

  According to this structure, when a user cleans a dust collection filter, all the dust collection filters can be cleaned collectively, and efficiency can be achieved.

  According to one aspect of the embodiment, it is possible to suppress a decrease in the performance of the blower unit.

Drawing 1 is an outline perspective view showing a toilet device and a toilet room provided with a sanitary washing device concerning an embodiment. FIG. 2 is a schematic perspective view showing the sanitary washing device according to the embodiment. FIG. 3 is a block diagram illustrating a main configuration of the sanitary washing device according to the embodiment. FIG. 4 is a schematic plan view showing the arrangement of functional units in the casing. FIG. 5 is a schematic plan view showing the arrangement of the dust collection filter in the casing. FIG. 6 is a schematic cross-sectional view showing the first deodorizing unit and the second deodorizing unit. FIG. 7 is a schematic cross-sectional view showing the second deodorizing unit and the dew condensation prevention unit. FIG. 8 is a flowchart showing a processing procedure for detecting dust clogging of the dust collecting filter. FIG. 9 is a flowchart showing a processing procedure of an example of the deodorization performance reduction prevention control. FIG. 10 is a flowchart showing a processing procedure of another example of the deodorization performance reduction prevention control. FIG. 11 is a schematic perspective view showing a modified example of the dust collection filter.

  Hereinafter, embodiments of a sanitary washing device disclosed in the present application will be described in detail with reference to the accompanying drawings. In addition, this invention is not limited by embodiment shown below.

<1. Toilet device>
First, with reference to FIG. 1, the toilet apparatus 1 provided with the sanitary washing apparatus 10 which concerns on embodiment is demonstrated. FIG. 1 is a schematic perspective view showing a toilet apparatus 1 and a toilet room 100 including a sanitary washing device 10 according to the embodiment. FIG. 1 illustrates a three-dimensional orthogonal coordinate system for the sake of convenience. In this orthogonal coordinate system, “front”, “rear”, “left side”, “right side”, “upward”, and “lower” Is stipulated. Note that the coordinate system may also be illustrated in other drawings.

  As shown in FIG. 1, the toilet device 1 is installed in a toilet room 100. The toilet device 1 includes a Western-style toilet (hereinafter referred to as a toilet) 2 and a sanitary washing device 10. The toilet bowl 2 is made of, for example, earthenware. The toilet bowl 2 is formed with a bowl portion 2a. The bowl part 2a has a shape recessed downward and is a part that receives the excrement of the user. The toilet bowl 2 is not limited to the floor-standing type as shown, but may be a wall-mounted type.

  The sanitary washing device 10 is attached to the upper rear portion of the toilet 2 and includes a main body 11, a toilet seat 12, and a toilet lid 13. The sanitary washing device 10 may be attached so as to be integrated with the toilet bowl 2 or may be attached to the toilet bowl 2 in a detachable manner. In addition, when the operation unit 51 installed on the wall surface of the toilet room 100 is operated by the user, the sanitary washing device 10 opens and closes the toilet lid 13 or activates various functions of functional units described later. A further configuration of the sanitary washing device 10 will be described later with reference to FIGS. 2 and 3.

  The toilet device 1 may be, for example, a cleaning water tank that stores cleaning water at the rear part of the toilet 2, or a so-called tankless type in which no cleaning water tank is installed. Further, the toilet device 1 may be of a so-called siphon type in which, for example, the filth in the bowl portion 2a is drawn using the siphon action and is discharged from the trap pipe, or, for example, due to a drop in washing water in the bowl portion 2a. A so-called washing-off type in which filth is washed away by flowing water may be used.

<2. Sanitary washing device>
Next, the sanitary washing device 10 according to the embodiment will be described with reference to FIGS. 2 and 3. FIG. 2 is a schematic perspective view showing the sanitary washing device 10 according to the embodiment. FIG. 3 is a block diagram illustrating a main configuration of the sanitary washing device 10 according to the embodiment. As described above, the sanitary washing device 10 includes the main body 11, the toilet seat 12, and the toilet lid 13.

  As shown in FIG. 2, the toilet seat 12 and the toilet lid 13 are pivotally supported by the main body portion 11 at their rear portions and attached to the main body portion 11 so as to be swingable in the vertical direction. The toilet lid 13 is attached to the sanitary washing device 10 as necessary, and can be omitted. The main body 11 includes a casing 14 and a nozzle unit 15. The casing 14 includes a case cover 14a and a case plate 14b. The casing 14 accommodates the water channel system including the nozzle unit 15 and the functional unit therein.

  The nozzle unit 15 includes a cleaning nozzle 15a. The cleaning nozzle 15a can move forward and backward with respect to the casing 14 by driving a driving source such as an electric motor (not shown). The cleaning nozzle 15a is connected to a water source such as a water pipe (not shown). When the cleaning nozzle 15 a has advanced with respect to the casing 14, the water from the water source is ejected to the user's body to clean the local area.

  Thus, the sanitary washing device 10 has a function of washing the user's local area. In addition to the local cleaning function, the sanitary washing device 10 is, for example, a drying function that blows hot air on a user's seat sitting on the toilet seat 12 and the like, and a toilet seat heating function that warms the seating surface of the toilet seat 12 to an appropriate temperature You may have.

  Moreover, the sanitary washing apparatus 10 is provided with a water channel system and a function part as the principal part structure. As shown in FIG. 3, the sanitary washing device 10 includes a nozzle unit 15, a washing water supply unit 20, a nozzle washing chamber 27, and a spray nozzle 28 as a water channel system. The sanitary washing device 10 includes a plurality of blower units 40 as functional units. The sanitary washing device 10 further includes a human body detection sensor 29, a seating detection sensor 30, a notification unit 31, and a control unit 50 in addition to the water channel system and the functional unit.

  The washing water supply unit 20 includes a flow path opening / closing valve 21, a heat exchanger 22, an electrolytic bath 23, an air release type vacuum breaker (VB) 24, an electromagnetic pump 25, and a flow control / flow path switching valve 26. With. The flow path opening / closing valve 21 is an electromagnetic valve that can be opened and closed, and controls the supply of cleaning water based on a command from the control unit 50. The flow path opening / closing valve 21 switches between supply and stop of cleaning water supplied from a water supply source.

  The heat exchanger 22 is provided downstream of the flow path opening / closing valve 21. The heat exchanger 22 heats the washing water supplied from the water supply source by the heater and raises the temperature to, for example, a specified temperature. The heat exchanger 22 converts the wash water supplied from the water supply source into hot water having a set temperature. The heat exchanger 22 may be, for example, an instantaneous heating type heat exchanger using a ceramic heater or a hot water storage heating type heat exchanger using a hot water storage tank. As for the heat exchanger 22, a user operates the operation part 51, and a warm water temperature is set.

  The electrolytic bath 23 is provided downstream of the heat exchanger 22. The electrolytic bath 23 has a pair of electrodes, and electrolyzes the cleaning water (tap water) flowing between the electrodes based on the energization control signal output from the control unit 50. The electrolyzer 23 generates water containing hypochlorous acid (HClO) (hereinafter referred to as functional water) by electrolyzing chlorine ions contained in the cleaning water. The cleaning water that has passed through the electrolytic bath 23 and the functional water generated in the electrolytic bath 23 are sent to the cleaning nozzle 15 a of the nozzle unit 15 via the electromagnetic pump 25. The electromagnetic pump 25 pulsates the cleaning water supplied to the cleaning nozzle 15a, for example.

  The cleaning nozzle 15 a includes a fountain unit 16. The fountain unit 16 includes, for example, a butt cleaning fountain hole 16a, a butt soft fountain hole 16b, and a bidet cleaning fountain hole 16c. The cleaning nozzle 15a includes a plurality of flow paths FC. The cleaning nozzle 15a can discharge the cleaning water supplied from each of the flow paths FC.

  The flow control / flow path switching valve 26 is provided between the electromagnetic pump 25 and the cleaning nozzle 15a, and the destination of the cleaning water or the functional water supplied via the electromagnetic pump 25 is, for example, a butt in the cleaning nozzle 15a. The flow is switched to any one of the flow paths FC, the nozzle cleaning chamber 27, the spray nozzle 28, and the blower unit 40 (for example, a first deodorizing unit 60 described later) for cleaning, buttocks software, bidet cleaning, and wide bidet cleaning.

  The nozzle cleaning chamber 27 includes a cleaning water discharger 27a. The nozzle cleaning chamber 27 discharges cleaning water or functional water from the cleaning water discharger 27a. The nozzle cleaning chamber 27 performs cleaning of the outer peripheral surface of the cleaning nozzle 15a, so-called body cleaning. The spray nozzle 28 sprays cleaning water or functional water on the surface of the bowl portion 2a (see FIG. 1) of the toilet bowl 2.

  The human body detection sensor 29 is, for example, a pyroelectric sensor using an infrared signal, and detects a person who enters the toilet room 100 (see FIG. 1) in which the toilet apparatus 1 (see FIG. 1) is installed. Detect. The human body detection sensor 29 outputs a detection signal to the control unit 50. The seating detection sensor 30 is, for example, an infrared light projecting / receiving distance measuring sensor, and a human body existing above the toilet seat 12 or a use seated on the toilet seat 12 immediately before the user sits on the toilet seat 12 (see FIG. 1). Detect people. The seating detection sensor 30 outputs a seating detection signal to the control unit 50.

  The notification unit 31 is, for example, an LED lamp or a buzzer, and is provided in the casing 14 (see FIG. 2). In addition, the alerting | reporting part 31 may be provided in the operation part 51 mentioned later provided in the wall surface of the toilet room 100. FIG. The notification unit 31 receives a command signal output from the control unit 50 that has received a signal from the blower unit 40 (for example, the first deodorizing unit 60).

  Here, the 1st deodorizing unit 60 in the ventilation unit 40 which is a function part of the sanitary washing apparatus 10 inhales the air in the toilet room 100, and absorbs or decomposes the odor contained in the inhaled air. The first deodorizing unit 60 discharges air that has absorbed or decomposed odors to the outside of the casing 14. In addition, the air in the toilet room 100 mainly refers to the air outside the toilet 2 (air other than in the bowl portion 2a).

The first deodorizing unit 60 includes a dust collection filter 61, a blower 62 (a blower fan 621, a fan drive motor 622, and a rotation detection sensor 623), a deodorization filter 63, a water discharger 64, a drainage unit 65, an intake air A port 66 and an exhaust port 67 are provided. In the first deodorizing unit 60, the air in the toilet room 100 passes through the inside of the deodorizing filter 63, so that malodorous components such as ammonia (NH ₃ ) and trimethylamine ((CH ₃ ) ₃ N) contained in the air. Is absorbed or decomposed by the deodorizing filter 63. The further structure of the 1st deodorizing unit 60 is later mentioned using FIG.

  The control unit 50 controls the operation of the water channel system and the function unit. The control unit 50 controls the operation of each unit described above based on, for example, an operation instruction input from the operation unit 51. As shown in FIG. 1, the operation unit 51 may be provided on the main body 11 (see FIG. 2) of the sanitary washing device 10 in addition to being provided on the wall surface of the toilet room 100. The operation unit 51 may be a so-called remote controller. Between the control unit 50 and the operation unit 51, wired communication or wireless communication may be used.

  Moreover, the control part 50 sprays a water droplet on the surface of the bowl part 2a of the toilet bowl 2 from the spray nozzle 28, for example based on the detection of the user's entrance by the human body detection sensor 29. Thereby, it can suppress that filth adheres to the surface of bowl part 2a.

  In addition, for example, when a predetermined time (for example, about 90 seconds) elapses after the human body detection sensor 29 no longer detects the user in the toilet room 100, the control unit 50 applies the spray nozzle 28 to the surface of the bowl portion 2a. Spray with functional water. Thereby, it can suppress that the microbe which becomes a malodor is increasing in the bowl part 2a, and can suppress that malodor is discharged | emitted from the toilet bowl 2. FIG.

  The control unit 50 also notifies the notification unit 31 when a dust clogging with a predetermined amount or more of dust occurs in the dust collection filter 61 of the blower unit 40 (first deodorizing unit 60 in the example of FIG. 3). Let Thereby, the fall of the performance (deodorizing performance) of the ventilation unit 40 (1st deodorizing unit 60) by the air volume fall of the ventilation fan 621 by the dust clogging of the dust collection filter 61 can be suppressed. Note that the deodorization performance reduction prevention control by the control unit 50 will be described later with reference to FIGS. 9 and 10.

<3. Function (Blower Unit)>
Next, with reference to FIG. 4 and FIG. 5, the several ventilation unit 40 which is a function part of the sanitary washing apparatus 10 is demonstrated. FIG. 4 is a schematic plan view showing the arrangement of the functional part (blower unit 40) in the casing 14. FIG. 5 is a schematic plan sectional view showing the arrangement of the dust collection filters 61, 71, 81 in the casing 14. In FIG. 4, the right half of the case cover 14 a is omitted, and the toilet bowl 2 is indicated by an imaginary line (two-dot chain line). In FIG. 5, a part of the water channel system and functional part on the case plate 14 b is shown. Omitted, the case cover 14a and the toilet 2 are indicated by imaginary lines (two-dot chain lines).

  As shown in FIG. 4, the case plate 14 b of the casing 14 is attached behind the bowl portion 2 a on the upper surface of the toilet 2. The case plate 14b is disposed so as to overlap a part of the inner peripheral edge of the rear portion of the bowl portion 2a in plan view. As described above, the sanitary washing device 10 accommodates the water channel system and the functional unit. The water channel system is arranged on the left half of the case plate 14b. The functional part is arranged in the right half part on the case plate 14b.

  The sanitary washing apparatus 10 includes a first deodorizing unit 60, a second deodorizing unit 70, and a dew condensation preventing unit 80 that is a ventilation unit as a plurality of blowing units 40 that are functional units. The 1st deodorizing unit 60 deodorizes by sucking the air in the toilet room 100 (refer FIG. 1). The 2nd deodorizing unit 70 deodorizes by sucking the air in the bowl part 2a of the toilet bowl 2. The dew condensation prevention unit 80 sucks the air in the toilet room 100 and supplies it to the inside of the casing 14, and ventilates the inside of the casing 14 to prevent the occurrence of dew condensation.

  Of the plurality (three) of blower units 40, the first deodorizing unit 60 and the dew condensation prevention unit 80 are arranged side by side at the right end on the case plate 14b. The second deodorizing unit 70 is disposed on the left side of the first deodorizing unit 60. That is, the 1st deodorizing unit 60 and the 2nd deodorizing unit 70 are arrange | positioned along with the left-right direction.

  As shown in FIG. 5, dust collecting filters 61, 71, 81 of the first deodorizing unit 60, the second deodorizing unit 70, and the dew condensation preventing unit 80 are provided on the plate surface of the case plate 14 b. Each of the dust collection filters 61, 71, 81 is attached to the case plate 14b so as to cover the intake ports 66, 74, 83 formed on the plate surface of the case plate 14b.

<4. First deodorizing unit>
Next, the 1st deodorizing unit 60 is demonstrated with reference to FIG. 3 and FIG. FIG. 6 is a schematic cross-sectional view showing the first deodorizing unit 60, and is a cross-sectional view taken along the line II in FIG. As shown in FIGS. 3 and 6, the first deodorizing unit (also referred to as an indoor deodorizing unit) 60 includes a dust collection filter 61, an air blowing unit 62, a deodorizing filter 63, a water discharge unit 64, and a drainage unit 65. , An intake port (hereinafter referred to as a first intake port) 66 and an exhaust port 67 are provided.

  The dust collection filter 61 is upstream of the air blowing unit 62 in the air flow direction, and is provided between the first air inlet 66 and the air blowing unit 62. The dust collection filter 61 collects dust in the air and suppresses the dust from adhering to the blower fan 621 while allowing the air sucked by the blower fan 621 of the blower 62 to pass therethrough.

  The blower unit 62 includes a blower fan 621, a fan drive motor 622, and a rotation detection sensor 623. As shown by an arrow A in FIG. 6, the blower fan 621 sucks air outside the casing 14 (see FIG. 4), that is, in the toilet room 100 (see FIG. 1). The blower fan 621 is, for example, a resin sirocco fan, and a plurality of wings provided therein rotate to suck air in the toilet room 100 from the first air inlet 66 and exhaust the sucked air. It spits out into the toilet room 100 from the mouth 67 again. The blower fan 621 is not limited to a sirocco fan, and may be another type of fan such as a turbo fan.

  The fan drive motor 622 is an electric motor, for example, and rotationally drives the blower fan 621. The blower fan 621 is driven and controlled by the control unit 50 (see FIG. 3) via the fan drive motor 622.

  The rotation detection sensor 623 detects the rotation of the fan drive motor 622. The rotation detection sensor 623 is, for example, a Hall sensor using a Hall element, and detects rotation without contact with the rotor of the fan drive motor 622. The control unit 50 detects a decrease in the air volume of the blower fan, which will be described later, based on a voltage value indicating the rotation speed of the blower fan 621 output from the rotation detection sensor 623.

  The deodorizing filter 63 is provided in the ventilation path through which the air sucked by the blower fan 621 flows. The deodorizing filter 63 is provided between the blower fan 621 and the exhaust port 67. The deodorizing filter 63 is, for example, a porous structure filter containing ceramics.

  The water discharger 64 is provided above the deodorizing filter 63. The water discharge unit 64 includes, for example, an electromagnetic valve, performs an opening operation of the electromagnetic valve based on the control of the control unit 50, and has the washing water and function supplied from the flow control / flow path switching valve 26 (see FIG. 3). Water is discharged (sprayed) from above toward the top of the deodorizing filter 63. The drainage unit 65 is provided below the deodorizing filter 63 and receives cleaning water and functional water supplied by the water discharge unit 64 and discharged from the lower part of the deodorizing filter 63.

In the first deodorizing unit 60, when the blower fan 621 is activated, the air in the toilet room 100 sucked from the first air inlet 66 passes through the inside of the deodorizing filter 63. When air passes through the inside of the deodorizing filter 63 in a state where the deodorizing filter 63 retains moisture, malodorous components in the air are taken into the moisture retained in the deodorizing filter 63. For example, ammonia (NH ₃ ) contained in the air dissolves in moisture held in the deodorizing filter 63. Thereby, an odor can be reduced.

  Further, the air with reduced odor is discharged from the exhaust port 67 to the toilet room 100. Thus, the 1st deodorizing unit 60 can absorb or decompose the odor (bad odor component) which is always present in the toilet room 100. As a result, when the user enters the toilet room 100, the user is less likely to smoke odors that are permanently present in the toilet room 100, and can use the toilet room 100 comfortably.

<5. Second deodorizing unit>
Next, the 2nd deodorizing unit 70 is demonstrated with reference to FIG. 6 and FIG. FIG. 7 is a schematic sectional view showing the second deodorizing unit 70 and the dew condensation preventing unit 80, and is a sectional view taken along the line II-II in FIG. As shown in FIGS. 6 and 7, the second deodorizing unit (also referred to as a toilet deodorizing unit) 70 includes a dust collection filter 71, a blower 72, a deodorizing filter 73, an intake port (hereinafter referred to as a second intake port). 74).

  The dust collection filter 71 is upstream of the air blowing unit 72 in the air flow direction, and is provided between the second air inlet 74 and the air blowing unit 72. The dust collection filter 71 collects dust in the air and suppresses the dust from adhering to the blower fan 721 while allowing the air sucked by the blower fan 721 of the blower 72 to pass therethrough.

  The blower 72 includes a blower fan 721 and a fan drive motor (not shown). As shown by arrow B in FIGS. 6 and 7, the blower fan 721 sucks air outside the casing 14 (see FIG. 4), that is, in the bowl portion 2 a (see FIG. 4) of the toilet bowl 2. The blower fan 721 is, for example, a resin sirocco fan, and a plurality of wings provided therein rotate to suck air in the bowl portion 2a from the second air inlet 74, and the sucked air is removed from the toilet. Exhale into the room 100 (see FIG. 1). The blower fan 721 is not limited to a sirocco fan, and may be another type of fan such as a turbo fan.

  The fan drive motor is an electric motor similar to the fan drive motor 622 of the first deodorizing unit 60, for example, and rotationally drives the blower fan 721. The blower fan 721 is driven and controlled by the control unit 50 (see FIG. 3) via a fan drive motor.

  The deodorizing filter 73 is provided in the ventilation path through which the air sucked by the blower fan 721 flows. As the deodorizing filter 73, for example, a member that deodorizes using a catalyst using activated carbon can be used, but is not limited thereto.

  In the second deodorizing unit 70, when the blower fan 721 is activated, the air in the bowl portion 2 a sucked from the second air inlet 74 passes through the inside of the deodorizing filter 73. When air passes through the inside of the deodorizing filter 73, malodorous components in the air are absorbed or decomposed, and odor can be reduced.

  Further, the air with reduced odor is discharged into the toilet room 100. Thus, the 2nd deodorizing unit 70 can absorb or decompose | disassemble the odor (bad odor component) in the bowl part 2a of the toilet bowl 2. FIG. Thereby, when a user enters the toilet room 100, the possibility of sucking odor is reduced, and the user can use the toilet room 100 comfortably.

<6. Condensation prevention unit>
Next, the dew condensation prevention unit 80 will be described with reference to FIG. As shown in FIG. 7, the dew condensation prevention unit 80 includes a dew condensation prevention filter 81 that is a dust collection filter, a blower 82, and an intake port (hereinafter referred to as a third intake port) 83. The dew condensation prevention filter 81 is provided upstream of the air flow direction of the air blowing part 82 and is provided between the third air inlet 83 and the air blowing part 82 to collect dust in the air.

  The blower 82 includes a dew condensation prevention fan 821 that is a blower fan. As shown by an arrow C in FIG. 7, the dew condensation prevention fan 821 sucks the air outside the casing 14 (see FIG. 4), that is, in the toilet room 100 (see FIG. 1). As the condensation prevention fan 821, for example, a propeller fan can be used. The dew condensation prevention fan 821 is not limited to this, and may be another fan such as a sirocco fan, for example.

  Further, the air blowing unit 82 includes a fan drive motor (not shown) that drives the dew condensation prevention fan 821. The blower fan 821 is driven and controlled by the control unit 50 (see FIG. 3) via a fan drive motor.

  The third intake port 83 is an opening formed in the case plate 14 b, and the air sucked by the dew condensation prevention fan 821 flows therethrough. Since the third air inlet 83 is spaced above the upper surface of the toilet 2, a gap communicating with the toilet room 100 (see FIG. 1) is formed below the third air inlet 83.

  Here, returning to FIG. 3, the control unit 50 detects the dust clogging of the dust collection filter 61 of the first deodorizing unit 60 that is one of the plurality of blowing units 40, thereby Suppresses the decrease in air volume.

<7. Dust clogging detection of dust collection filter>
Next, detection of dust clogging of the dust collection filter 61 by the control unit 50 (see FIG. 3) will be described with reference to FIGS. As shown in FIG. 3, the control unit 50 controls the fan drive motor 622 that drives the blower fan 621 of the first deodorizing unit 60 and is output from the rotation detection sensor 623 that detects the rotation of the fan drive motor 622. Dust clogging of the dust collection filter 61 is detected based on the voltage value to be detected.

  FIG. 8 is a flowchart showing a processing procedure for detecting dust clogging of the dust collection filter 61. As shown in FIG. 8, when the controller 50 detects an increase in the voltage value output from the rotation detection sensor 623 of the first deodorizing unit 60 (step S101: Yes), the blower fan of the first deodorizing unit 60 This is detected as an increase in the rotational speed of 621 (step S102).

  Next, when detecting an increase in the rotational speed of the blower fan 621 of the first deodorizing unit 60, the control unit 50 detects this as a clogging of the dust collection filter 61 (step S103). In addition, the control part 50 does not detect the raise of the voltage value output from the rotation detection sensor 623 of the 1st deodorizing unit 60 (step S101: No), step S101 is detected until the rise of a voltage value is detected. Repeat the process.

  Thus, the control unit 50 detects the clogging of the dust collection filter 61 based on the voltage value indicating the rotational speed of the blower fan 621 of the first deodorizing unit 60.

  Moreover, the 1st deodorizing unit 60, the 2nd deodorizing unit 70, and the dew condensation prevention unit 80 which are the ventilation units 40 differ in use frequency (namely, drive time), respectively. Among these blower units 40, one blower unit 40 having the highest use frequency is a first deodorizing unit 60 that deodorizes air in the toilet room 100 (see FIG. 1).

  Moreover, there exist the 2nd deodorizing unit 70 and the dew condensation prevention unit 80 as another ventilation unit 40 whose use frequency is lower than the 1st deodorizing unit 60. FIG. Further, the second deodorizing unit 70 and the dew condensation preventing unit 80 are used at different frequencies. In the present embodiment, the first deodorizing unit 60 is used as the one blowing unit 40 having the highest use frequency, and the second deodorizing unit 70 and the dew condensation preventing unit 80 are used as the other blowing unit 40 having the lower use frequency. For example, the other air blowing unit 40 may be one of the second deodorizing unit 70 and the dew condensation preventing unit 80.

  When detecting the clogging of the first deodorizing unit 60 having the highest use frequency, the control unit 50 detects the second clogging of the first deodorizing unit 60 based on the detection of the clogging of the dust. The dust clogging of at least one of the dust collection filter 71 and the condensation prevention filter 81 which is a dust collection filter of the condensation prevention unit 80 is detected.

  In this case, a threshold value is set for the voltage value output from the rotation detection sensor 623 of the first deodorizing unit 60. The threshold value set in the voltage value output from the rotation detection sensor 623 corresponds to dust clogging of the dust collection filter 71 of the second deodorizing unit 70 and the condensation prevention filter 81 of the condensation prevention unit 80.

  The control unit 50 determines how much the dust collection filter 61 of the first deodorizing unit 60 is clogged and the dust collection filter 71 of the second deodorization unit 70 and the condensation prevention filter 81 of the condensation prevention unit 80 are clogged. Is stored in advance, and when the degree of dust clogging stored by the dust collection filter 61 of the first deodorizing unit 60 is reached, the degree of dust clogging of the other dust collection filters 71 and 81 is detected.

  As shown in FIG. 3, when detecting the clogging of the dust collection filter 61 of the first deodorizing unit 60, the control unit 50 controls the fan drive motor 622 to extend the drive time of the blower fan 621. Moreover, if the control part 50 detects the dust clogging of the dust collection filter 61 of the 1st deodorizing unit 60, it will control the alerting | reporting part 31 so that this may be alert | reported. In this case, the control unit 50 outputs a command signal toward the notification unit 31 at the timing when dust clogging is detected.

<8. Deodorizing performance deterioration prevention control>
Next, the deodorization performance reduction prevention control by the control unit 50 will be described with reference to FIGS. 9 and 10. FIG. 9 is a flowchart showing a processing procedure of an example of the deodorization performance reduction prevention control. As described above, when detecting the clogging of the dust collection filter 61 of the first deodorizing unit 60, the control unit 50 extends the drive time of the blower fan 621 in order to prevent a reduction in the air volume of the blower fan 621. Extend the deodorization time.

  As shown in FIG. 9, when the controller 50 detects an increase in the rotational speed of the blower fan 621 of the first deodorizing unit 60 based on the voltage value output from the rotation detection sensor 623 (step S201), the blower fan It is determined that the air volume is reduced at 621, and the dust clogging of the dust collection filter 61 is detected. When detecting the dust clogging of the dust collection filter 61, the control unit 50 extends the driving time of the blower fan 621 and extends the deodorizing time by the first deodorizing unit 60 (step S202).

  Next, the control unit 50 extends the deodorization time at the timing when dust clogging is detected, and outputs a command signal to the notification unit 31. Based on the command signal from the control unit 50, the notification unit 31 notifies the clogging of dust by turning on an LED lamp, a buzzer sound, or the like (step S203). Note that the control unit 50 may notify the notification unit 31 after driving the blower fan 621 for a certain period of time after detecting dust clogging.

  Moreover, FIG. 10 is a flowchart which shows the process sequence of the other example of control for prevention of deodorization performance deterioration. In the deodorization performance reduction prevention control shown in FIG. 10, a threshold value is set for the voltage value output from the rotation detection sensor 623 in the first deodorizing unit 60, and the second deodorizing unit is based on the voltage value for which the threshold value is set. 70 dust clogging is detected. In addition to the second deodorizing unit 70, it is also possible to detect clogging of dust in the dew condensation prevention unit 80.

  As shown in FIG. 10, when the control unit 50 detects an increase in the rotational speed of the blower fan 621 of the first deodorizing unit 60 based on the voltage value output from the rotation detection sensor 623 (step S301), the blower fan It is determined that the air volume is reduced at 621, and the dust clogging of the dust collection filter 61 is detected.

  Next, the control unit 50 determines whether or not the voltage value output from the rotation detection sensor 623 is equal to or greater than a set threshold value (step S302). When the voltage value is equal to or greater than the threshold value (step S302: Yes), the deodorizing time of the second deodorizing unit 70 is extended (step S303).

  Next, the control unit 50 extends the deodorization time of the second deodorization unit 70 at the timing when dust clogging is detected, and outputs a command signal to the notification unit 31. The notification unit 31 notifies the clogging of the second deodorizing unit 70 based on the command signal from the control unit 50 by, for example, lighting of an LED lamp or a buzzer sound (step S304). Note that the control unit 50 may notify the notification unit 31 after driving the blower fan 721 for a certain period of time after detecting dust clogging.

  When the voltage value is not equal to or greater than the threshold value in the process of step S302 (step S302: No), the control unit 50 extends the deodorizing time of the first deodorizing unit 60 (step S305).

  Next, the control unit 50 extends the deodorizing time of the first deodorizing unit 60 at the timing when dust clogging is detected, and outputs a command signal to the notification unit 31. Based on the command signal from the control unit 50, the notification unit 31 notifies the clogging of the second deodorizing unit 70 by, for example, lighting of an LED lamp or a buzzer sound (step S306). Note that the control unit 50 may notify the notification unit 31 after driving the blower fan 621 for a certain period of time after detecting dust clogging.

  As described above, according to the sanitary washing device according to the embodiment, the performance of the blower fan 621 is deteriorated by detecting the dust clogging of the dust collection filter 61 based on the voltage value indicating the rotational speed of the blower fan 621. Can respond quickly. Here, when the dust collecting filter 61 is clogged with dust, the blower fan 621 is in an idle state due to air pressure loss, the rotation speed of the blower fan 621 is increased, and the rotation speed of the blower fan 621 is increased. The voltage value indicating the rotational speed of 621 increases or the frequency of the voltage value change increases, and dust clogging can be estimated.

  Thus, since the dust clogging of the dust collection filter 61 is known from the voltage value indicating the rotation speed of the blower fan 621, when the dust collection filter 61 is clogged with dust, for example, the rotation speed of the blower fan 621 is, for example, Or extending the driving time of the blower fan 621 can suppress a decrease in deodorizing performance due to a decrease in the air volume sucked by the blower fan 621.

  Further, the degree of dust clogging of the dust collection filters 71 and 81 of the second deodorizing unit 70 and the dew condensation prevention unit 80 is estimated from the dust clogging of the dust collecting filter 61 of the first deodorizing unit 60 having the highest use frequency. Therefore, only the voltage value indicating the rotational speed of the blower fan 621 of the first deodorizing unit 60 is measured, and the voltage value indicating the rotational speed of the blower fans 721 and 821 of the second deodorizing unit 70 and the dew condensation prevention unit 80 is measured. This measurement is unnecessary. As described above, when the first deodorizing unit 60, the second deodorizing unit 70, and the dew condensation preventing unit 80 are provided, it is not necessary to measure all voltage values, and efficiency can be improved. In addition, the number of sensors can be reduced, and the configuration can be simplified.

  Also, the dust clogging of each of the dust collection filters 71 and 81 of the second deodorizing unit 70 and the dew condensation prevention unit 80 should correspond to the degree of dust clogging of the dust collecting filter 61 of the first deodorizing unit 60 having the highest use frequency. Thus, the clogging of the dust collection filters 71 and 81 of the second deodorization unit 70 and the dew condensation prevention unit 80 can be detected based on the degree of dust clogging of the dust collection filter 61 of the first deodorization unit 60.

  In addition, when the dust clogging is detected, extending the driving time of the blower fan 621 (721, 821), that is, the deodorizing time, can reliably suppress the deterioration of various performances due to the dust clogging.

  In addition, by notifying the notification unit 31 at the timing when dust clogging is detected, it is possible to prompt the user to perform maintenance such as cleaning of the dust collection filter 61 (71, 81), and to suppress deterioration in various performances. .

  In the above-described embodiment, dust clogging of the dust collection filter 61 is detected based on the voltage value output from the rotation detection sensor 623. For example, for driving the fan drive motor 622 that drives the blower fan 621 It is also possible to detect dust clogging from the current value. In this case, the current value decreases as the rotational speed of the blower fan 621 increases. In addition, it is also possible to detect dust clogging by directly counting the rotational speed of the blower fan 621.

<9. Modified example of dust collection filter>
FIG. 11 is a schematic perspective view showing a modified example (dust collection filter 91) of the dust collection filter. As shown in FIG. 11, the dust collection filter 91 according to the modification includes a dust collection filter 61 of the first deodorization unit 60, a dust collection filter 71 of the second deodorization unit 70, and a dust collection of the dew condensation prevention unit 80. A filter (condensation prevention filter) 81 is integrally formed by a filter plate 92.

  According to such a configuration, when the user cleans the dust collection filters 61, 71, 81 of the first deodorization unit 60, the second deodorization unit 70, and the dew condensation prevention unit 80, all the dust collection filters are collected. 61, 71, 81 can be cleaned together, and efficiency can be improved.

  Further effects and modifications can be easily derived by those skilled in the art. Thus, the broader aspects of the present invention are not limited to the specific details and representative embodiments shown and described above. Accordingly, various modifications can be made without departing from the spirit or scope of the general inventive concept as defined by the appended claims and their equivalents.

DESCRIPTION OF SYMBOLS 2 Toilet bowl 2a Bowl part 10 Sanitary washing apparatus 40 Blower unit 31 Notification part 50 Control part 60 1st deodorizing unit 61 Dust collection filter 621 Blower fan 70 2nd deodorizing unit 71 Dust collection filter 721 Blower fan 80 Condensation prevention unit 81 Dew condensation Prevention filter 821 Condensation prevention fan 91 Dust collection filter 100 Toilet room

Claims (9)

A blower unit having a blower fan that sucks external air; and a dust collection filter that is provided upstream of the blower fan and that collects dust in the air while allowing the air sucked by the blower fan to pass through;
A control unit that drives and controls the blower fan,
The said control part detects the dust clogging of the said dust collection filter based on the voltage value which shows the rotation speed of the said ventilation fan. The sanitary washing apparatus characterized by the above-mentioned. A plurality of the air blowing units are provided,
The plurality of air blowing units have different usage frequencies.
The control unit determines the degree of dust clogging of the dust collecting filter of another air blowing unit based on detection of the dust clogging of the dust collecting filter of the air blowing unit having the highest use frequency among the plurality of air blowing units. The sanitary washing device according to claim 1, wherein the device is detected. The sanitary washing apparatus according to claim 2, wherein the plurality of air blowing units include a first deodorizing unit that deodorizes air in a toilet room as the one air blowing unit. The sanitary washing apparatus according to claim 3, wherein the plurality of air blowing units include a second deodorizing unit that deodorizes air in a bowl portion of the toilet bowl as the other air blowing unit. The plurality of blower units include a dew condensation prevention unit having, as the other blower units, a dew condensation prevention fan that is the blower fan and a dew condensation prevention filter that is the dust collection filter. The sanitary washing device according to 3 or 4. The control unit sets a threshold value corresponding to the dust clogging of the dust collection filter of the other blower unit for the voltage value of the one blower unit, and the other value based on the voltage value for which the threshold value is set. The sanitary washing device according to any one of claims 2 to 5, wherein a degree of dust clogging of the dust collecting filter of the air blowing unit is detected. The said control part extends the drive time of the said ventilation fan of this ventilation unit, if the said dust clogging in the said ventilation unit is detected. The sanitary washing apparatus as described in any one of Claims 1-6 characterized by these. Further comprising a notification unit,
The said control part makes the said alerting | reporting part alert | report at the timing which detected this dust clogging, if the said dust clogging in the said ventilation unit is detected. The sanitary washing apparatus as described in any one of Claims 1-7 characterized by the above-mentioned. . The sanitary washing device according to any one of claims 2 to 8, wherein the dust collection filters in the plurality of air blowing units are integrally formed.