JP2020076202A - Toilet deodorizing device - Google Patents

Abstract

To provide a toilet deodorizing device capable of using a filter for a long time without using the heater while suppressing the generation of biofilm in a drainage path.SOLUTION: The toilet deodorizing device includes: a ventiduct having an intake port and an exhaust port; a blower disposed in the ventiduct for forming air flow from the intake port toward the exhaust port; an adsorption filter capable of absorbing odor components contained in the air passing the ventiduct, which is arranged in the ventiduct; water discharge means that can discharge water to the adsorption filter; a drainage path for draining the water discharged from the water discharge means to a predetermined position; and a control device that can execute a deodorization mode and regeneration mode. The control device is configured to control the water discharge means not to discharge water to the adsorption filter in the deodorization mode, and in the regeneration mode, to discharge water to the adsorption filter. The surface of the adsorption filter is formed of a material in which the adsorbed odor component can be desorbed only by the water that is discharged from the water discharge means.SELECTED DRAWING: Figure 1

Description

  Aspects of the invention generally relate to toilet deodorizing devices.

  Patent Document 1 discloses a water retention filter type deodorizing device for a toilet. In this deodorizing device, water is sprayed on a filter to retain water, and an odor component (odor generated from urine scattered on the floor) in the toilet room is dissolved in water to deodorize. According to this deodorizing device, the odorous component is discharged together with water to the predetermined position of the toilet through the drainage route, so that the filter can be used for a long period of time.

JP, 2016-94712, A Japanese Patent No. 2754421

  However, in the deodorizing device of Patent Document 1, the drainage route is in a state of being immersed in water containing an odor component for a long time in the deodorizing mode. The present inventors have discovered that when the drainage route is soaked with water containing an odorous component, a biofilm is likely to be generated in the drainage route and the biofilm may block the drainage route. In order to avoid the blockage of the drainage path by the biofilm, it is necessary to make the drainage path wider, but this leads to an increase in the size of the deodorizing device.

  With respect to this problem, Patent Document 2 discloses an adsorption filter type deodorizing device that adsorbs odorous components without using water. In this deodorizing device, in order to make the adsorption filter usable for a long time, the odor component adsorbed by the adsorption filter is desorbed by the heater to regenerate the adsorption filter. However, in order to desorb the odorous components by using the heat of the heater, it is necessary to raise the temperature of the adsorption filter to a high temperature of about 200 ° C., so that the time required for regeneration is long. Further, there are various problems such that the coating of the adsorption filter is peeled off early by heat, the cost is increased due to the heat resistance of the adsorption filter, and the hot air may come into contact with the user.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a deodorizing device for a toilet in which a filter can be used for a long period of time without using a heating heater while suppressing generation of a biofilm in a drainage path.

  A first aspect of the present invention is a deodorizing device for a toilet provided in a toilet device, including an air intake path for sucking air in a toilet room, and an exhaust path for discharging the sucked air. An air blower provided on the way of the air passage to form an air flow from the intake port to the exhaust port, and an odor component contained in air passing through the air passage provided on the way of the air passage. Possible adsorption filter, water discharge means capable of discharging water to the adsorption filter, a drainage path for discharging the water discharged from the water discharge means to a predetermined position, and a deodorizing mode for adsorbing odorous components to the adsorption filter And a regeneration mode for desorbing the odorous components adsorbed by the adsorption filter, and a control device capable of executing, wherein the control device does not discharge water to the adsorption filter in the deodorization mode, and The water discharge means is controlled to discharge water to the adsorption filter in the regeneration mode, and the surface of the adsorption filter is made of a material capable of desorbing the adsorbed odorous component only by the water discharged from the water discharge means. It is a deodorizing device for toilets.

  According to this toilet deodorizing device, water does not flow to the drainage route except when the regeneration mode is executed, and thus it is possible to prevent the drainage route from being soaked in water for a long time to generate a biofilm. For example, even when the width of the drainage path is narrower, the drainage path can be prevented from being blocked by the biofilm, and the deodorizing device can be downsized. In addition, since the adsorption filter can be regenerated only by the water discharged from the water discharge means, the regeneration time is shortened, the safety is improved, the adsorption filter has a longer life, and the deodorizing device is compared with the case of regenerating the adsorption filter by heating. It is possible to reduce the cost.

  2nd invention is further provided with the adsorption amount measurement means which detects or estimates the amount of the odorous component adsorbed by the said adsorption filter in 1st invention, The said control apparatus detects or estimates by the said adsorption amount measurement means. The deodorizing device for a toilet does not execute the regeneration mode when the amount of the odorous component is less than a predetermined amount, and executes the regeneration mode when the amount is more than the predetermined amount.

  According to this toilet deodorizing device, the number of times the regeneration mode is executed can be suppressed to the necessary minimum, and the time during which the drainage path is immersed in water can be further shortened.

  A third invention is the toilet deodorizing device according to the second invention, wherein the adsorption amount measuring means estimates the amount of the odorous component adsorbed by the adsorption filter based on the operating time of the blower.

  According to this toilet deodorizing device, it is possible to more easily estimate the amount of the odor component adsorbed by the adsorption filter. For example, the size and cost of the deodorizing device can be reduced as compared with the case where the device for directly detecting the amount of the odorous component is provided in the deodorizing device.

  A fourth invention is the toilet deodorizing device according to any one of the first to third inventions, wherein the water discharge amount of the water discharge means in the regeneration mode is always constant.

  According to this toilet deodorizing device, it is possible to reduce the discharge of water that does not substantially contribute to the desorption of odorous components, and prevent the drainage path from being unnecessarily lengthened in water.

  In a fifth aspect based on any one of the first to fourth aspects, the control device, after executing the regeneration mode, forms an airflow in the drainage route to remove water remaining in the drainage route. It is a toilet deodorizing device that executes a drying mode for drying.

  According to this toilet deodorizing device, the time taken for the drainage route to be immersed in water can be further shortened.

  ADVANTAGE OF THE INVENTION According to the aspect of this invention, the deodorizing apparatus for toilets which can use a filter for a long period of time is provided, without using a heater, while suppressing the production | generation of a biofilm in a drainage path.

It is a perspective view showing a toilet device provided with a toilet deodorizing device according to an embodiment. It is a block diagram showing the important section composition of the sanitary washing device provided with the deodorizing device for the toilet concerning an embodiment. It is a top view showing the sanitary washing device provided with the deodorizing device for the toilet concerning an embodiment. It is a flowchart showing operation | movement of the deodorizing device for toilets which concerns on embodiment. It is sectional drawing showing the deodorizing apparatus for toilets which concerns on embodiment. It is sectional drawing showing the deodorizing apparatus for toilets which concerns on embodiment. It is sectional drawing showing the deodorizing apparatus for toilets which concerns on embodiment. It is sectional drawing showing the deodorizing apparatus for toilets which concerns on embodiment. It is the top view and sectional drawing which expand and express a part of base plate. It is a sectional view showing a part of base plate and a nozzle unit.

  Hereinafter, embodiments will be described with reference to the drawings. In the drawings, the same components are designated by the same reference numerals, and detailed description thereof will be appropriately omitted.

FIG. 1 is a perspective view showing a toilet device including a toilet deodorizing device according to an embodiment.
As shown in FIG. 1, the toilet device 2 includes a Western-style seating toilet (hereinafter simply referred to as “toilet” for convenience of description) 4, a sanitary washing device 10, and a toilet deodorizing device (hereinafter simply “deodorizing device”). 41). The sanitary washing device 10 is mounted on the toilet bowl 4. The sanitary washing device 10 may be integrally attached to the toilet 4, or may be detachably attached to the toilet 4. The deodorizing device 41 is attached to the sanitary washing device 10, for example. In the example shown in FIG. 1, the deodorizing device 41 is provided integrally with the sanitary washing device 10.

  The sanitary washing device 10 includes a toilet seat 14, a toilet lid 16, and a casing 20. The casing 20 is mounted on a portion of the toilet bowl 4 that is behind the bowl portion 4a. The casing 20 has a case cover 22. The casing 20 rotatably supports the toilet seat 14 and the toilet lid 16 in the case cover 22. The toilet lid 16 is provided in the sanitary washing device 10 as necessary and can be omitted.

  Here, in the specification of the present application, the upper side, the lower side, the front side, the rear side, the right side, and the left side when viewed from the user who sits on the toilet seat 14 with his back to the toilet lid 16 in the open state are respectively referred to as “upper”, "Downward", "forward", "rearward", "rightward", and "leftward".

  The toilet bowl 4 has a bowl portion 4a. The bowl portion 4a has a shape recessed downward. The toilet bowl 4 receives excrements such as urine and feces of the user at the bowl portion 4a.

FIG. 2 is a block diagram showing a main configuration of a sanitary washing device including the toilet deodorizing device according to the embodiment.
As shown in FIG. 2, the sanitary washing device 10 includes a wash water supply unit 30, a seating detection sensor 31, a human body detection sensor 32, a nozzle unit 33, a spray nozzle 38, a deodorizing device 41, and a deodorizing device. 42 and a control device 44. The nozzle unit 33 has a cleaning nozzle 34 and a nozzle cleaning chamber 36.

  The seating detection sensor 31 detects the seating of the user on the toilet seat 14. As the seating detection sensor 31, for example, an infrared light emitting / receiving distance measuring sensor, a detection switch, a capacitance sensor, or the like can be used. The seating detection sensor 31 outputs the detection result of the presence or absence of seating to the control device 44.

  The human body detection sensor 32 detects a human body that has entered a room in which the toilet device 2 is installed (hereinafter referred to as a toilet room). As the human body detection sensor 32, for example, a pyroelectric sensor using an infrared signal can be used. Alternatively, a radio wave sensor using a millimeter wave or a microwave may be used as the human body detection sensor 32. In this case, it is possible to detect not only the human body that has entered the toilet room, but also the human body that is about to enter the toilet room. The human body detection sensor 32 outputs the human body detection result to the control device 44.

  The control device 44 controls the operations of the cleaning water supply unit 30, the human body detection sensor 32, the cleaning nozzle 34, the nozzle cleaning chamber 36, the spray nozzle 38, the deodorizing device 41, and the deodorizing device 42. The control device 44 controls the operation of each unit according to an operation instruction input from the operation unit 45 or a detection result output from the seating detection sensor 31 or the human body detection sensor 32. The operation unit 45 may be provided in the casing 20 or may be provided separately from the casing 20. The operation unit 45 may be a so-called remote controller. The communication between the control device 44 and the operation unit 45 may be wired or wireless.

  The flush water supply unit 30 includes a flow passage opening / closing valve 50, a heat exchanger 51, an electrolysis tank 52, an atmosphere release type vacuum breaker (VB) 53, an electromagnetic pump 54, and a flow control / flow passage switching valve 55. And have.

  The flow path opening / closing valve 50 is an electromagnetic valve that can be opened / closed, and controls the supply of cleaning water based on a command from the control device 44. The flow path opening / closing valve 50 switches between supplying and stopping the washing water supplied from the water supply source.

  The heat exchanger 51 is provided downstream of the flow path opening / closing valve 50 and heats the wash water supplied from the water supply source to generate hot water. Hereinafter, in the present specification, “cleansing water” includes water (cold water) supplied from a water supply source and hot water heated by the heat exchanger 51. The heat exchanger 51 may be an instantaneous heating type (instantaneous type) heat exchanger, or a hot water storage heating type heat exchanger using a hot water storage tank. The user can set the temperature of the hot water by operating the operation unit 45, for example.

  The electrolytic cell 52 is provided downstream of the heat exchanger 51. The electrolytic bath 52 has a pair of electrodes, and electrolyzes wash water (tap water) flowing between the electrodes. The electrolytic cell 52 produces a liquid containing hypochlorous acid (HClO) (hereinafter referred to as “functional water”) by electrolyzing chlorine ions contained in the wash water.

  The vacuum breaker 53 is provided downstream of the electrolytic cell 52. The vacuum breaker 53 promotes drainage on the downstream side of the vacuum breaker 53 by taking in air into the water channel.

  The electromagnetic pump 54 is provided downstream of the vacuum breaker 53. The electromagnetic pump 54 pulsates or accelerates the flow of water in the water channel, and pulsates the water discharged from the cleaning nozzle 34. “Pulsation” is a fluctuation in pressure in the water channel caused by the electromagnetic pump 54. The electromagnetic pump 54 changes the pressure of water in the water channel, and changes the flow state of the water flowing in the water channel.

  The cleaning nozzle 34 has a water discharge part 35. The water discharger 35 has, for example, a buttocks wash water discharge hole 35a, a buttocks soft water discharge hole 35b, and a bidet washing water discharge hole 35c. The cleaning water or functional water sent to the cleaning nozzle 34 is discharged upward from the water discharger 35. The wash water discharged from the water discharger 35 is used for cleaning the local area such as the “buttock” of the user sitting on the toilet seat 14. The functional water is used for cleaning the water discharge holes 35a to 35c and the water passages reaching the water discharge holes 35a to 35c.

  The flow control / flow path switching valve 55 is provided between the electromagnetic pump 54 and the cleaning nozzle 34. The flow control / flow path switching valve 55 sets the destination of the wash water or the functional water supplied via the electromagnetic pump 54 to the buttocks wash water discharge hole 35a, the buttocks soft water discharge hole 35b, the bidet washing water discharge hole 35c, and the nozzle washing chamber 36. , The spray nozzle 38, or the deodorizing device 41. Further, the flow control / flow path switching valve 55 changes the flow rate of the wash water discharged from the water discharge holes 35a to 35c of the wash nozzle 34.

  The nozzle cleaning chamber 36 has a water discharge part 36a. The nozzle cleaning chamber 36 performs cleaning of the outer surface of the cleaning nozzle 34, that is, body cleaning by discharging cleaning water or functional water from the water discharger 36a.

  The spray nozzle 38 sprays cleaning water or functional water onto the surface of the bowl portion 4a of the toilet bowl 4. The spray nozzle 38 may be provided inside the casing 20 or may be attached outside the casing 20.

  For example, the control device 44 sprays water from the spray nozzle 38 onto the surface of the bowl portion 4a of the toilet 4 in response to the detection of the user by the human body detection sensor 32. By attaching water droplets to the surface of the bowl portion 4a before the user uses the toilet device 2, it is possible to prevent the bowl portion 4a from becoming dirty.

  Further, the control device 44 sprays the functional water from the spray nozzle 38 onto the surface of the bowl portion 4a of the toilet 4 when a predetermined time elapses after the human body detection sensor 32 no longer detects the user in the toilet room. .. That is, the controller 44 wets the surface of the bowl portion 4a with functional water (hypochlorous acid water) after the user flushes the waste and finishes using the toilet 4. As a result, it is possible to suppress the bacteria that cause the bad odor from growing in the bowl portion 4a.

  The deodorizing device 42 is provided in the casing 20. The deodorizing device 42 sucks air in the bowl portion 4a of the toilet 4, reduces odorous components such as stool odor contained in the sucked air, and then discharges the air to the outside of the casing 20. The control device 44 operates the deodorizing device 42 for a predetermined time when the seating detection sensor 31 detects that the user has left the toilet seat 14, for example.

  The deodorizing device 41 according to the embodiment is provided, for example, in the casing 20. The deodorizing device 41 sucks the air in the toilet room. The air in the toilet room mainly means air outside the toilet bowl 4 (air other than in the bowl portion 4a). The deodorizing device 41 collects or decomposes odorous components such as urine odor contained in the sucked air. The “odor component” is, for example, a component such as ammonia or trimethylamine. The deodorizing device 41 discharges the air, which has collected or decomposed odorous components, to the outside of the casing 20 (toilet room). Thereby, the deodorizing device 41 deodorizes the air in the toilet room.

  The deodorizing device 41 has a dust collecting filter 60, a fan 61 (blower), an adsorption filter 62, a spraying part 63 (water discharging means), a duct part 64, an intake port 65, and an exhaust port 66. ..

  One end of the duct portion 64 is provided as an intake port 65 for sucking air in the toilet room. The other end of the duct portion 64 is provided as an exhaust port 66 through which the air sucked from the intake port 65 is discharged to the outside. The duct portion 64 forms a ventilation path that guides air from the intake port 65 to the exhaust port 66.

  The fan 61 is provided on the way of the ventilation path. When the fan 61 operates, the air in the toilet room is sucked from the intake port 65, and an airflow is formed in the duct portion 64 from the intake port 65 toward the exhaust port 66. The fan 61 is, for example, a sirocco fan.

  The adsorption filter 62 is provided on the way of the ventilation path. The suction filter 62 is disposed between the fan 61 and the exhaust port 66 in the duct portion 64, for example. The spray unit 63 can discharge the cleaning water or the functional water supplied from the flow control / flow path switching valve 55 to the adsorption filter 62 under the control of the control device 44. The spray unit 63 is provided, for example, above the adsorption filter 62, and can spray (spray) water toward the adsorption filter 62 in the form of mist. The supply of water to the adsorption filter 62 is not limited to this example, and may be any water discharge form capable of controlling discharge of wash water or functional water.

  The dust collecting filter 60 is provided on the upstream side of the fan 61 and the suction filter 62, and suppresses dust contained in the sucked air from being sent to the fan 61 and the suction filter 62.

  The adsorption filter 62 is configured to adsorb odorous components contained in air. The adsorption filter 62 has a plurality of through holes through which air can pass. In addition, minute pores may be provided on the surface of the adsorption filter 62 to increase the surface area. When the fan 61 operates, the air in the toilet room sucked through the intake port 65 passes through the adsorption filter 62. When the air passes through the adsorption filter 62, odorous components such as ammonia contained in the air are adsorbed by the adsorption filter 62. Thereby, the odorous component contained in the air can be reduced.

  The air with reduced odor components is discharged from the exhaust port 66 to the toilet room. In this way, the deodorizing device 41 can collect or decompose odorous components and the like that are normally present in the toilet room. Therefore, when entering the toilet room, the user is less likely to inhale the odor due to the odorous components that are normally present in the toilet room, and can use the toilet room comfortably.

  For example, the control device 44 stops the operation of the fan 61 during a time period when the toilet device 2 is used by the user infrequently, and operates the fan 61 during a time period when the toilet device 2 is frequently used. This makes it possible to remove the odor that is normally present in the toilet room during the time when the user is likely to enter the toilet room.

FIG. 3 is a plan view showing a sanitary washing device including the toilet deodorizing device according to the embodiment.
FIG. 3 is a plan view of the sanitary washing device 10 with the case cover 22 omitted. As shown in FIG. 3, the casing 20 has a base plate 24. The base plate 24 closes the lower end of the case cover 22. In other words, the case cover 22 is mounted on the base plate 24. In the sanitary washing device 10, the nozzle unit 33, the deodorizing device 41, the deodorizing device 42, the control device 44, the flow passage opening / closing valve 50, the heat exchanger 51, the electrolytic bath 52, the vacuum breaker 53, the electromagnetic pump 54, and the flow control / flow. Each part such as the path switching valve 55 is mounted on the base plate 24.

  In this example, the sanitary washing device 10 further includes a warm air drying unit 43. The warm air drying unit 43 blows warm air toward the human body part of the user sitting on the toilet seat 14 (such as “buttock”) to dry the human body part of the user who has been wet by washing. The nozzle unit 33 is provided substantially at the center of the base plate 24 in the left-right direction. For example, the nozzle unit 33, the warm air drying unit 43, the deodorizing device 42, and the deodorizing device 41 are provided adjacent to each other in this order from substantially the center in the left-right direction toward the right side.

  The exhaust port 42a of the deodorizing device 42 is provided side by side with the exhaust port 66 of the deodorizing device 41. In this example, the exhaust port 42a and the exhaust port 66 are provided facing rearward and arranged side by side in the left-right direction. The exhaust ports 42a and the exhaust ports 66 may be provided, for example, laterally and arranged side by side in the front-rear direction. Alternatively, the exhaust port 42a and the exhaust port 66 may be arranged so as to be vertically stacked. The air discharged from the exhaust port 42a and the exhaust port 66 is discharged to the outside of the casing 20 through an opening provided on the back surface of the casing 20.

  The deodorizing device 42 has a deodorizing member 42b such as a deodorizing catalyst or an adsorption filter. The deodorizing device 42 reduces the odorous components contained in the sucked air by passing the sucked air through the deodorizing member 42b.

  Regarding the deodorizing device 41, the control device 44 can execute the deodorizing mode and the reproducing mode. In the deodorizing mode, as described above, the control device 44 operates the fan 61 to deodorize the air in the toilet room. In the regeneration mode, the control device 44 discharges water from the spray unit 63 to the adsorption filter 62. When water is supplied to the adsorption filter 62, the odorous component adsorbed by the adsorption filter 62 is dissolved in water and flows down from the adsorption filter 62. As a result, the odorous component is desorbed from the adsorption filter 62, and the odorous component can be collected or decomposed again by the adsorption filter 62.

  The surface of the adsorption filter 62 is formed of a material that adsorbs the odorous component and is capable of desorbing the adsorbed odorous component with water. That is, the adsorption filter 62 can adsorb the odorous component even when it does not contain water. Further, the adsorbed odorous component can be desorbed only by the water discharged from the spray unit 63. Therefore, the control device 44 does not discharge water from the spray unit 63 to the adsorption filter 62 in the deodorizing mode, but discharges water from the spray unit 63 to the adsorption filter 62 only in the regeneration mode. Activated carbon or zeolite is used as the material of the adsorption filter 62. Alternatively, a fiber film made of an acrylate resin may be used as the adsorption filter 62.

  As shown in FIG. 3, the deodorizing device 41 includes a drain gutter 80 (drain path). The drain gutter 80 has, for example, a tubular shape with a substantially rectangular cross section. When water is discharged from the spray unit 63 to the adsorption filter 62 during execution of the regeneration mode, the water also adheres to the inside of the duct unit 64. The drain gutter 80 guides the water inside the duct portion 64 to a predetermined position. In this example, the drain gutter 80 guides water from the duct portion 64 to the bowl portion 4 a of the toilet 4 through the base plate 24 and discharges the water.

  The drain gutter 80 is a hard conduit provided on the base plate 24. The drain gutter 80 does not cause elastic deformation or the like and does not substantially change the shape of the internal pipe line in a normal use state. As a result, the water drained from the deodorizing device 41 can be more appropriately discharged to the outside of the casing 20 as compared with the case where the water is drained using a flexible tube or the like. Further, by forming the drain gutter 80 into a tubular shape having a substantially rectangular cross-section, it is possible to reduce the surface tension in the conduit and make it easier to drain the water, as compared with, for example, a case where the cross-section has a substantially circular shape.

  Further, the control device 44 executes the drying mode after the reproduction mode. In the dry mode, the water remaining on the adsorption filter 62 and the drain gutter 80 to which water adheres is dried. In the dry mode, the control device 44 operates the fan 61 to form an air flow inside the duct portion 64. At this time, a part of the air flows through the drain gutter 80. By operating the fan 61 for a predetermined time, the inside of the adsorption filter 62 and the drain gutter 80 can be dried.

  Further, the deodorizing device 41 includes an adsorption amount measuring means for detecting or estimating the amount (adsorption amount) of the odorous component adsorbed by the adsorption filter 62. The control device 44 executes the regeneration mode when the adsorption amount is equal to or larger than the predetermined amount.

  As an example, the control device 44 functions as an adsorption amount measuring means. The adsorption amount in the adsorption filter 62 is proportional to the amount of air that has passed through the adsorption filter 62. The amount of air that has passed through the adsorption filter 62 is proportional to the total operation time of the fan 61. The control device 44 calculates the total operation time of the fan 61 after the execution of the immediately preceding reproduction mode. The control device 44 sets the calculated value as the adsorption amount and compares this value with a predetermined amount.

  In addition to this, a gas sensor may be provided as the adsorption amount measuring means. For example, gas sensors are provided on the upstream side and the downstream side of the adsorption filter 62, respectively. A difference between the ammonia concentration detected by the gas sensor on the upstream side and the ammonia concentration detected by the gas sensor on the downstream side is calculated. This difference corresponds to the amount of ammonia adsorbed on the adsorption filter 62. The amount of adsorption to the adsorption filter 62 is calculated by integrating the above difference at each time. These calculations may be performed by the gas sensor or the control device 44.

FIG. 4 is a flowchart showing the operation of the toilet deodorizing device according to the embodiment.
When the control device 44 receives the deodorization mode trigger (step S1), it executes the deodorization mode (step S2). The trigger of the deodorizing mode is issued when a predetermined time has passed from the previous deodorizing mode in a time period when the toilet device 2 is frequently used, or when a motion of a human body trying to enter the toilet room is detected. In the deodorizing mode, as described above, the control device 44 operates the fan 61 to reduce the odorous component contained in the sucked air in the toilet room.

  After executing the deodorizing mode, the control device 44 detects or estimates the adsorption amount in the adsorption filter 62 by the adsorption amount measuring means (step S3). The control device 44 compares the adsorption amount with a predetermined amount (step S4). When the adsorbed amount is less than the predetermined amount, the process returns to the state of waiting for the deodorizing mode trigger. When the adsorption amount is equal to or more than the predetermined amount, the control device 44 executes the regeneration mode (step S5), and subsequently executes the drying mode (step S6). As a result, the odorous component can be adsorbed to the adsorption filter 62 again.

The effect of the embodiment will be described.
In the deodorizing device 41 according to the embodiment, the control device 44 does not discharge water from the spray unit 63 to the adsorption filter 62 in the deodorizing mode. Then, the control device 44 discharges water from the spray unit 63 to the adsorption filter 62 in the regeneration mode. By not discharging the water from the spray unit 63 in the deodorizing mode, water does not flow into the drain gutter 80 except when the regeneration mode is executed. Therefore, the time for which the drain gutter 80 is immersed in water can be shortened, and the generation of biofilm on the drain gutter 80 can be suppressed. Therefore, for example, even when the width of the drain gutter 80 is narrower, the drain gutter 80 can be prevented from being blocked by the biofilm, and the deodorizing device 41 can be downsized.
Further, the surface of the adsorption filter 62 is formed of a material capable of desorbing the adsorbed odorous component only by the water discharged from the spray unit 63. Therefore, compared with the case where the adsorption filter 62 is regenerated by heating, it is possible to shorten the regeneration time, improve safety, extend the life of the adsorption filter 62, and reduce the cost of the deodorizing device 41.

  Although the execution timing of the regeneration mode is arbitrary, it is desirable to detect or estimate the adsorption amount by the adsorption amount measuring means in order to shorten the time during which the drain gutter 80 is immersed in water. By executing the regeneration mode based on the detected or estimated adsorption amount, the number of times of execution of the regeneration mode can be suppressed to the necessary minimum.

For example, as described above, the control device 44 functions as the adsorption amount measuring means. The control device 44 uses the sum of the operating time of the fan 61 as a value indicating the adsorption amount. The control device 44 executes the regeneration mode when the adsorption amount is equal to or larger than the predetermined amount.
The predetermined amount is set based on the amount of the odorous component that can be adsorbed by the adsorption filter 62. In order to more reliably suppress the generation of biofilm in the drain gutter 80, it is preferable to keep the frequency of execution of the regeneration mode using water to the necessary minimum. Therefore, the predetermined amount is not an amount at which the adsorption amount in the adsorption filter 62 starts to decrease, but is preferably an amount at which the adsorption amount reaches the limit (saturation) value and the odorous component cannot be adsorbed any more.

  More preferably, the adsorption amount is estimated based on the operating time of the fan 61. According to this method, the adsorption amount can be estimated more easily. For example, it is possible to reduce the size and cost of the deodorizing device 41 as compared with a case where a device for directly detecting the amount of adsorption is provided in the deodorizing device 41.

Further, it is difficult to completely desorb the odorous components adsorbed on the adsorption filter 62 by regeneration using only water. For example, when minute pores are formed on the surface of the adsorption filter 62, water does not sufficiently enter the depths of the pores, and the odorous components adsorbed in the depths of the pores are not desorbed.
As a result of investigation by the inventors, it was found that the amount of the odorous component that is difficult to be desorbed in the adsorption filter 62 increases as the adsorption filter 62 is regenerated and repeatedly used. When the amount of the odorous component that is difficult to desorb in the adsorption filter 62 increases, typically, a method in which a large amount of water is discharged to the adsorption filter 62 for a longer period of time to promote desorption is considered. However, as a result of investigation by the inventors, it was found that desorption hardly progresses even when more water is discharged for a longer time with respect to the odorous component that is difficult to desorb.
Therefore, in order to reduce the discharge of water that does not contribute to the desorption of odorous components and not to unnecessarily lengthen the time that the drain gutter 80 is immersed in water, the number of times the adsorption filter 62 is regenerated (the number of times the regeneration mode is executed) is set. Regardless, it is desirable that the amount of water discharged to the adsorption filter 62 is always constant in the regeneration mode.

  In addition, the control device 44 executes the drying mode after executing the regeneration mode, so that the water remaining in the drain gutter 80 after executing the regeneration mode can be dried, and the time for which the drain gutter 80 is immersed in water can be further shortened.

Hereinafter, a more specific configuration of the deodorizing device 41 will be described.
5 and 6 are cross-sectional views showing the deodorizing device for a toilet device according to the embodiment.
FIG. 5 shows a state in which the deodorizing device 41 is viewed from above.
FIG. 6 shows a state in which the deodorizing device 41 is viewed from the side.
6 shows a cross section taken along line A1-A2 of FIG. 5, and FIG. 5 shows a cross section taken along line B1-B2 of FIG.

  The suction filter 62 is held by the case portion 72. The adsorption filter 62 is formed, for example, in a grid shape and has a plurality of through holes 62a. As described above, the surface of the adsorption filter 62 is formed of a material that adsorbs the odorous component and can desorb the odorous component with water. For the case portion 72, for example, a resin material containing an antibacterial agent is used. The suction filter 62 is held in the duct portion 64, for example, with the through holes 62a facing vertically.

  The deodorizing device 41 is arranged with the intake port 65 facing downward. The fan 61 sucks air from below via an intake opening 22a (see FIG. 1) provided in the lower side surface of the case cover 22 and an intake port 65. The duct portion 64 guides the air discharged from the fan 61 rearward, and passes the air through the adsorption filter 62 from the lower side to the upper side. Then, the duct portion 64 guides the air that has passed through the adsorption filter 62 further rearward, and discharges the air to the outside of the casing 20 through the exhaust port 66.

  In this way, the deodorizing device 41 discharges the air sucked from the lower side portion of the casing 20 rearward. The positions of intake and exhaust of the deodorizing device 41 are not limited to the above, and may be arbitrary positions of the casing 20. For example, the air sucked from the side of the casing 20 may be deodorized and then discharged to the side of the casing 20 again.

  The fan 61 is arranged below the adsorption filter 62. Thereby, when the air is passed from the lower side to the upper side of the adsorption filter 62, the air can be efficiently sent to the duct portion 64 and the adsorption filter 62. Further, the fan 61 is arranged so as to be displaced in the horizontal direction with respect to the suction filter 62. In other words, the fan 61 does not overlap the suction filter 62 in the vertical direction. As a result, it is possible to prevent the cleaning water or the functional water sprayed from the spray unit 63 from being applied to the fan 61 when the regeneration mode is executed.

  The duct part 64 has a retention space 64a and an upper space 64b, as shown in FIG. The adsorption filter 62 is provided in the upper space 64b, and the retention space 64a is provided below the adsorption filter 62. The retention space 64a temporarily retains the air sucked by the fan 61 below the adsorption filter 62. In the adsorption filter 62, air is less likely to flow than in the duct portion 64. Therefore, in the retention space 64a located upstream of the adsorption filter 62, air is more likely to retain than in other portions.

  In the adsorption filter 62 after executing the regeneration mode, due to gravity, the amount of water in the lower portion is higher than that in the upper portion. By temporarily retaining the air in the retention space 64a below the adsorption filter 62, the air can be brought into contact with water not only during the passage through the adsorption filter 62 but also during the retention time in the retention space 64a. Accordingly, in the drying mode, the adsorption filter 62 and the inner bottom surface 64d of the duct portion 64 that receives the water dropped from the adsorption filter 62 can be dried in a shorter time. By making each of these parts dry easily, the amount of water flowing to the drain gutter 80 can be reduced, and the time during which the drain gutter 80 is immersed in water can be shortened.

  Further, when the air is passed from the lower side to the upper side with respect to the adsorption filter 62, the retention space 64a is made wider than the upper space 64b. This makes it easier for the air to stay in the stay space 64a, and the contact time between the air and water can be made longer. Then, it is possible to suppress the retention of air in the upper space 64b and immediately discharge the air to the outside of the casing 20. This allows the adsorption filter 62 and the inner bottom surface 64d to be dried in a shorter time in the drying mode.

FIG. 7: is sectional drawing showing the deodorizing apparatus for toilets which concerns on embodiment.
FIG. 7 shows a cross section taken along line C1-C2 of FIG. As shown in FIG. 7, the duct part 64 has an introduction part 64c.

  The introduction portion 64c guides the air sucked by the fan 61 to the retention space 64a. At the connecting portion between the introduction portion 64c and the retention space 64a, the center CT1 in the width direction of the introduction portion 64c is laterally displaced from the center CT2 in the width direction of the retention space 64a. The introduction part 64c extends, for example, in a tangential direction with respect to the retention space 64a.

  In this way, by displacing the center CT1 from the center CT2, it is possible to make air stay more easily in the stay space 64a. For example, as represented by the arrow in FIG. 7, air can be swirled along the inner surface 64s of the duct portion 64. As a result, the contact time between air and water can be made longer, and the adsorption filter 62 and the inner bottom surface 64d can be dried in a shorter time in the drying mode.

  A part of the inner surface 64s of the duct portion 64 is curved in an arc shape. This makes it easier to swirl the air. When a sirocco fan is used as the fan 61, the wind is stronger on the outer peripheral side of the rotating rotor than on the inner peripheral side, as represented by the size of the arrow in FIG. 7. In this case, the fan 61 is arranged so that the wind blown from the outer peripheral side of the rotor of the fan 61 follows the inner surface 64s of the duct portion 64. This makes it easier to swirl the air. By making the contact time between air and water longer, the adsorption filter 62 and the inner bottom surface 64d can be dried in a shorter time in the drying mode.

  Further, as shown in FIG. 7, the duct portion 64 has a first drainage port 74a and a second drainage port 74b. The first drainage port 74a causes the water sprayed from the spraying unit 63 and dropped in the adsorption filter 62 to flow into the drainage gutter 80. That is, the duct part 64 is connected to the drain gutter 80 via the first drain port 74a. The second drainage port 74b is provided in the bottom portion between the adsorption filter 62 and the fan 61, and drains water toward the fan 61 side to the outside. The second drainage port 74b, for example, causes water directed toward the fan 61 to be dropped onto the base plate 24 and drained to the bowl portion 4a of the toilet 4 through the base plate 24. It should be noted that a blocking plate may be provided at the second drain port 74b to prevent water from flowing to the base plate.

  The first drain port 74a is provided on the center side of the base plate 24 in the left-right direction. The second drainage port 74b is provided on the side opposite to the first drainage port 74a in the left-right direction. That is, the introduction portion 64c is provided on the side opposite to the first drain port 74a in the left-right direction. Thereby, for example, the first drain port 74a and the drain gutter 80 can be easily connected. By providing the first drain port 74a toward the center side of the base plate 24 that drains the water to the bowl portion 4a, the water drained from the deodorizing device 41 can be more easily drained to the bowl portion 4a.

FIG. 8: is sectional drawing showing the deodorizing device for toilets which concerns on embodiment.
FIG. 8 shows a cross section taken along line D1-D2 of FIG.
As shown in FIGS. 6 and 8, the inner bottom surface 64d of the duct portion 64 that receives the water dropped from the adsorption filter 62 is inclined downward toward the first drainage port 74a. The inner bottom surface 64d is an inclined surface having a drainage gradient that drains the water dropped from the adsorption filter 62 to the first drainage port 74a. The opening end of the first drainage port 74a is located below the opening end of the second drainage port 74b. As a result, the water dropped from the adsorption filter 62 normally goes to the first drain port 74 a and is drained to the bowl portion 4 a of the toilet 4 via the drain gutter 80.

  When the water dropped from the adsorption filter 62 unintentionally goes to the fan 61 side, the second drainage port 74b drops the water on the base plate 24 and suppresses the water splashing on the fan 61. The second drainage port 74b is provided as necessary and can be omitted.

9A and 9B are a plan view and a cross-sectional view showing a part of the base plate in an enlarged manner.
FIG. 9B shows a cross section taken along line E1-E2 of FIG.
As shown in FIGS. 9A and 9B, the drain gutter 80 includes a gutter main body 82 and a lid portion 84.

  The gutter body 82 has a concave shape with an upper opening. In this example, the gutter body 82 is provided on the base plate 24. In other words, the gutter body 82 is formed as a separate member from the base plate 24, and is mounted on the base plate 24. The lid 84 closes the upper part of the gutter main body 82. The lid part 84 closes the upper part of the gutter main body 82, for example, by fitting in the opening end above the gutter main body 82. As a result, a tubular drain gutter 80 is formed by the gutter main body 82 and the lid portion 84. The lid portion 84 may be fitted on the outside of the gutter body 82 to close the upper part of the gutter body 82. The drain gutter 80 may be configured by, for example, a concave lid portion having an opening at the bottom and a bottom plate portion that fits into an opening end below the lid portion and closes the bottom of the lid portion.

  The drain gutter 80 may be formed of two members as described above, or may be formed of one tubular member. However, as described above, by forming the drain gutter 80 with the gutter body 82 and the lid portion 84, the drain gutter 80 can be easily formed. Further, by forming the gutter body 82 integrally with the base plate 24, the number of parts can be reduced and the drain gutter 80 can be formed more easily. For the gutter main body 82 (base plate 24) and the lid portion 84, for example, a hard resin material containing the above-mentioned antibacterial agent is used. Thereby, elastic deformation of the drain gutter 80 in a normal use state is suppressed. In addition, it is possible to prevent the drain gutter 80 from being blocked by the increase in bacteria and the formation of a biofilm.

FIG. 10 is a sectional view showing a part of the base plate and the nozzle unit.
As shown in FIG. 10, the nozzle unit 33 has a support 90 that supports the cleaning nozzle 34. The support 90 has a protrusion 90a that projects laterally toward the deodorizing device 41 side. The protruding portion 90a is provided above the lid portion 84 of the drain gutter 80, and presses the one end 84a side of the lid portion 84. In this way, the one end 84a side of the lid portion 84 is pressed by the nozzle unit 33.

The embodiments of the present invention have been described above. However, the present invention is not limited to these descriptions. A person skilled in the art appropriately modified the above-described embodiment is also included in the scope of the present invention as long as it has the features of the present invention. For example, the shape, size, material, arrangement, installation form, etc. of each element of the toilet deodorizing device are not limited to those illustrated, but can be changed as appropriate.
Further, each element included in each of the above-described embodiments can be combined as long as technically possible, and a combination of these is also included in the scope of the present invention as long as it includes the features of the present invention.

  2 toilet device, 4 toilet, 4a bowl part, 10 sanitary washing device, 14 toilet seat, 16 toilet lid, 20 casing, 22 case cover, 22a intake opening, 24 base plate, 30 wash water supply part, 31 seating detection sensor, 32 human body Detection Sensor, 33 Nozzle Unit, 34 Cleaning Nozzle, 35 Water Discharge Port, 35a Butt Wash Water Discharge Port, 35b Butt Soft Water Discharge Port, 35c Bidet Water Discharge Port, 36 Nozzle Wash Chamber, 36a Water Discharge Port, 38 Spray Nozzle, 41 Deodorizer 42 deodorizing device, 42a exhaust port, 42b deodorizing member, 43 warm air drying unit, 44 control device, 45 operation part, 50 flow path opening / closing valve, 51 heat exchanger, 52 electrolyzer, 53 vacuum breaker, 54 electromagnetic pump, 55 Flow control / flow path switching valve, 60 dust collecting filter, 61 fan, 62 adsorption filter, 62a through hole, 63 spraying section, 64 duct section, 64a retention space, 64b upper space, 64c introducing section, 64d inner bottom surface, 64s inside Side surface, 65 intake port, 66 exhaust port, 72 case part, 74a first drainage port, 74b second drainage port, 80 drainage gutter, 82 gutter body, 84 lid part, 84a one end, 90 support body, 90a protruding part, CT1 , CT2 center, S1 to S6 steps

Claims (5)

A deodorizing device for a toilet provided in the toilet device,
A ventilation path having an intake port for sucking air in the toilet room and an exhaust port for discharging the sucked air,
An air blower that is provided on the way of the air passage and forms an airflow from the intake port toward the exhaust port,
An adsorption filter which is provided on the way of the air passage and is capable of adsorbing an odor component contained in the air passing through the air passage,
Water discharge means capable of discharging water to the adsorption filter,
A drainage path for discharging the water discharged from the water discharge means to a predetermined position,
A deodorizing mode for adsorbing an odorous component to the adsorption filter, and a regenerating mode for desorbing an odorous component adsorbed to the adsorption filter, and a control device capable of executing the deodorizing mode,
Prepare,
The controller does not discharge water to the adsorption filter in the deodorizing mode, and controls the water discharge means to discharge water to the adsorption filter in the regeneration mode,
The deodorizing device for a toilet, wherein the surface of the adsorption filter is made of a material capable of desorbing the adsorbed odorous component only by the water discharged from the water discharge means. Further comprising an adsorption amount measuring means for detecting or estimating the amount of the odorous component adsorbed by the adsorption filter,
The control device does not execute the regeneration mode when the amount of the odorous component detected or estimated by the adsorption amount measuring means is less than a predetermined amount, and executes the regeneration mode when the amount becomes equal to or more than the predetermined amount. The deodorizing device for a toilet according to claim 1.   The toilet deodorizing device according to claim 2, wherein the adsorption amount measuring means estimates the amount of the odorous component adsorbed by the adsorption filter based on the operating time of the blower.   The deodorizing device for a toilet according to any one of claims 1 to 3, wherein the control device keeps the water discharge amount of the water discharge means in the regeneration mode constant.   The said control apparatus performs the drying mode which forms an airflow in the said drainage path, and dries the water which remains in the said drainage path, after performing the said regeneration mode. Deodorizing device for toilet.

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