JP5649041B2 - Sanitary washing device - Google Patents

Description

  The present invention relates to a nozzle cleaning function in a sanitary cleaning device.

  Conventionally, this type of sanitary washing apparatus removes dirt and germs attached to the nozzle by discharging washing water having a temperature higher than that in the case of washing a human body part to the nozzle after use. (For example, refer to Patent Document 1).

  In addition, there is a sanitary washing device that removes dirt attached to the nozzle device by performing nozzle washing with washing water having a temperature equivalent to that used for washing a local part of the human body instead of high-temperature water. (For example, refer to Patent Document 2).

  In the configuration described in Patent Document 2, by performing nozzle cleaning periodically in a predetermined cycle or after a certain period of non-use, the filth adhering to the nozzle device is prevented from drying and sticking, The nozzle device is kept hygienic.

Japanese Patent Laid-Open No. 10-311078 JP 2002-356896 A

  However, in the configuration described in the above-mentioned conventional patent document 1, in order to remove the germs adhering to the nozzle device by washing (hereinafter referred to as “nozzle sterilization washing”), it is more than the case of washing the human body part. Requires high temperature wash water.

  In particular, in the so-called “hot water storage” sanitary washing apparatus that stores hot water for washing in the tank and performs washing, a heater for rapidly raising the temperature of the washing water is provided, or the hot water in the hot water tank is kept at a high temperature, The entire system becomes complicated and costly because many components are required, such as a hot water mixing valve that mixes hot water with a predetermined ratio according to the required temperature, such as when cleaning human body parts and when sterilizing nozzles. There was room for improvement in that it took.

  Further, in the configuration described in the above-mentioned conventional patent document 2, since the nozzle is washed with washing water having the same temperature as that for washing the local body part, there is a concern that various germs cannot be sufficiently removed depending on the shape of the nozzle. In addition, since a large amount of hot water is required to clean the nozzle until further germs are removed, in the hot water storage type sanitary cleaning device, the hot water in the tank runs out immediately after the nozzle sanitization cleaning. Immediately after sterilization washing, there was room for improvement in that it was not possible to perform local washing of the human body with warm water.

The present invention solves the above-mentioned conventional problems, and provides a sanitary washing device capable of performing nozzle sterilization washing with a low-cost and simple configuration without impairing the usability of the washing function of the human body part. For the purpose.

  In order to solve the conventional problems, a sanitary washing device of the present invention includes a nozzle device that performs local cleaning of a human body, nozzle cleaning means that cleans the nozzle device, a hot water tank that stores hot water for cleaning, and hot water. A warm water heater that warms the cleaning water in the tank, an operation unit that is operated by a user, and a warming interruption setting unit that stops energization of the warm water heater for a certain period of time by operation of the operation unit. Thus, while the energization to the hot water heater is stopped, the sanitary washing device performs the washing of the nozzle device by the nozzle washing means.

  This makes it clear that the user himself / herself will not use the sanitary washing device for a certain period of time by setting the energization stop to the hot water heater by means of the thermal interruption setting means, and during that time the nozzle device uses the hot water in the hot water tank. It is possible to clean the water and there is no loss of convenience such as no hot water used for the next local cleaning.

  The sanitary washing device of the present invention can remove germs adhering to the nozzle device with a low-cost and simple configuration without impairing the usability of the washing function of the human body part.

The perspective view which shows the external appearance of the sanitary washing apparatus in Embodiment 1 of this invention. The disassembled perspective view which shows the structure inside the main body in Embodiment 1 of this invention. The perspective view which shows the external appearance in the storage position of the nozzle apparatus in Embodiment 1 of this invention. Sectional drawing in the storage position of the nozzle apparatus in Embodiment 1 of this invention AA sectional view shown in FIG. (A) is sectional drawing in the bidet washing position of the nozzle apparatus in Embodiment 1 of this invention, (b) is detailed sectional drawing of the front-end | tip part. (A) is sectional drawing in the butt washing position of the nozzle apparatus in Embodiment 1 of this invention, (b) is detailed sectional drawing of the front-end | tip part (A) is a top view of the nozzle unit in Embodiment 1 of this invention, (b) is the same sectional drawing. The top view of the operation part in Embodiment 1 of this invention The flowchart of the nozzle cleaning start determination process of the control part in Embodiment 1 of this invention. The flowchart of the nozzle cleaning start determination process of the control unit in Embodiment 2 of the present invention. The flowchart of the nozzle cleaning start determination process of the control unit in Embodiment 3 of the present invention.

A first invention is a nozzle device that performs local cleaning of a human body, nozzle cleaning means that cleans the nozzle device, a hot water tank that stores hot water for cleaning, and hot water that heats the cleaning water in the hot water tank A heater, an operation unit operated by a user, and a heat insulation interruption setting unit for stopping energization of the warm water heater for a certain period of time by operation of the operation unit, and the heat insulation interruption setting unit to the warm water heater This is a sanitary washing device that carries out the washing of the nozzle device by the nozzle washing means after a certain period of time has elapsed since the last local washing was completed .

Thus, by the user himself sets the deenergization of the water heater by heat insulating interruption setting means, making that does not use a fixed time sanitary washing apparatus becomes clear, by using the hot water in the hot water tank during the nozzle The nozzle device can be cleaned after securing a sufficient amount of water and temperature to remove germs adhering to the device, and there is no loss of convenience such as no hot water used for the next local cleaning.

  The second invention, in particular, in the first invention, comprising nozzle cleaning setting means for setting execution of the nozzle cleaning by operation of the operation unit, setting for performing nozzle cleaning by the nozzle cleaning setting means, Nozzle cleaning is performed only when the energization stop of the hot water heater is set by the heat retention interruption setting means.

  Thereby, it is possible to perform nozzle cleaning only when necessary without using wasteful warm water.

In a third aspect of the invention, particularly in the first or second aspect of the invention, the nozzle cleaning is performed at substantially the same temperature as the hot water used for the local cleaning.

  This eliminates the need for nozzle cleaning at a higher temperature than during local body cleaning, and does not require parts such as a heater that rapidly raises the temperature of the washing water and a hot and cold water mixing valve that mixes the hot water in the hot water tank held at a high temperature. Therefore, it is possible to remove germs attached to the nozzle device with a low-cost and simple configuration without impairing the usability of the cleaning function of the human body local part.

In a fourth aspect of the invention, in particular, in any one of the first to third aspects of the invention, the nozzle device includes a nozzle body having a plurality of ejection ports for ejecting cleaning water at a tip portion, and at least one of the nozzle bodies. A cylindrical nozzle cover that covers a portion of the nozzle body, the nozzle cover having a jet opening corresponding to at least one jet outlet of the nozzle body, and wash water jetted from the jet outlet through the jet opening. It is characterized by ejecting.

  As a result, the surface of the nozzle device is less likely to be contaminated with dirt and germs, and it is possible to easily remove the germs that have adhered by washing away with warm water.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a perspective view showing an appearance of a sanitary washing device according to Embodiment 1 of the present invention, and FIG. 2 is an exploded perspective view showing a configuration inside a main body.

<1> Overall Configuration of Sanitary Washing Device As shown in FIG. 1, a sanitary washing device 50 according to the present embodiment includes a main body 51, an operation unit 52, a toilet seat 53, a toilet lid 54, and the like. The main body 51, the toilet seat 53, and the toilet lid 54 of the sanitary washing device 50 are integrally assembled and installed on the upper surface of a toilet (not shown). Hereinafter, in describing the configuration of the sanitary washing device 50, the front is the front or the front, the rear is the rear or the rear, the left is the left or the left, and the right is viewed from the user seated on the toilet seat 53. Is described as a right direction or a right side. In addition, the toilet seat 53 and the toilet lid 54 are provided so as to be rotatable separately from each other between the standing position and the lying position, respectively. Rotating toward is referred to as “opening”, and rotating from the standing position toward the lying down position is referred to as “closing”.

The specific configuration of the main body 51 is not particularly limited. For example, the main body 51 has a horizontally long shape in the present embodiment, and its longitudinal direction crosses in the left-right direction on the rear side of the toilet bowl. Located in the toilet. An operation unit 52 is integrally provided on the main body 51, and a toilet seat 53 and a toilet lid 54 are attached to be freely opened and closed. Further, only the tip surface of the nozzle device 100 accommodated in the main body 51 is exposed at a position below the toilet seat 53 in the main body 51.

  The nozzle unit 200 of the nozzle device 100 advances toward the center of the toilet, and washing water is ejected from a jet outlet provided at the tip of the nozzle unit 200 toward the user's local area, thereby cleaning the user's local area. The internal configuration of the main body 51 and the nozzle device 100 will be described later.

  The operation unit 52 is provided so as to extend from the right side surface of the main body unit 51 to the front side, and the shape thereof is, for example, a columnar shape, and the upper surface thereof is an operation surface. The operation surface is provided with a plurality of operation switches for operating various functions of the sanitary washing device 50 and display means for displaying the operation status and the like.

  As shown in FIG. 1, the left and right side surfaces of the main body 51 are toilet lid support side surfaces 51 a, and the toilet lid 54 can be opened and closed by inserting the rotation shaft of the toilet lid 54 to be rotatable. It is supported. In addition, the front of the left and right side surfaces of the main body 51 is a toilet seat support side surface 51b which is a stepped surface as if viewed from the toilet lid support side surface 51a toward the central portion in the left and right direction of the main body portion 51. The toilet seat 53 is supported to be openable and closable by inserting the pivot shaft of the toilet seat 53 so as to be pivotable.

  When the toilet seat 53 is attached to the main body 51, the toilet seat 53 is freely rotatable between a standing position and a lying position, and a user is seated at the lying position (closed state). When the toilet lid 54 is attached to the main body 51, the toilet lid 54 is freely rotatable between a standing position and a lying position, and is set to a standing position (open state) when used, and a lying position (closed) when not used. State). Both the toilet seat 53 and the toilet lid 54 may be configured to be manually opened and closed, or may be configured to be automatically opened and closed by a toilet seat / toilet lid opening / closing unit provided in the main body 51. .

  The toilet seat 53 includes a toilet seat heater (not shown) and is configured to heat the toilet seat 53. That is, the sanitary washing device 50 according to the present embodiment has a heating toilet seat function.

  As shown in FIG. 2, the main body 51 contains a hot water tank 20, a nozzle device 100, a drying unit (not shown), a control unit, and the like in a housing 511 having a hollow inside.

  The main body part is located on the lower side of the casing 511, and includes a lower casing 511a that accommodates the functional units in a mounted state, and an upper casing (not shown) that is attached so as to cover the upper side of the lower casing 511a. It is configured. In FIG. 2, for convenience of describing the hot water tank 20 and the nozzle device 100, only the lower housing 511 a is illustrated for the housing 511 constituting the main body 51, and other functional units, control units, and the like are also illustrated. Absent. The hot water tank 20 and the nozzle device 100 may collectively constitute one cleaning unit.

  The hot water tank 20 receives cleaning water from the water supply connecting portion 34 located on the lower right side of the main body 51 via a water inlet portion not shown in FIG. 2, stores the cleaning water, and stores the cleaning water inside. It is heated to a predetermined temperature range by a provided hot water heater.

In addition, a branched flow path (not shown) is provided between the water supply connection part 34 and the water inlet part,
A pressure relief valve 341 for releasing the water pressure is provided in the branched flow path so that a water pressure higher than a certain pressure is not applied to the hot water tank 20. When water is supplied from a water supply source at a predetermined pressure or higher, the pressure relief valve 341 opens and excess water is discharged from the piping 342. The water supply connection portion 34 includes a nipple, piping, a valve, and the like. As the piping, a soft resin tube is used.

  In addition, a water outlet (not shown) for draining the water stored in the hot water tank 20 is provided at the bottom of the hot water tank 20, and the water in the hot water tank 20 is expected to freeze, When not used for a long time, the water in the hot water tank 20 can be drained.

  Further, the outlet 252 of the hot water tank 20 is connected to the pipe 332, the pipe 333, and the pipe 334 from the pipe 331 via a flow rate adjusting valve (not shown) that adjusts the flow path and flow rate of the nozzle device 100. Pipes 332, 333, and 334 are connected to the nozzle device 100, respectively, and supply heated cleaning water (hot water) to the nozzle device 100.

  Further, as shown in FIG. 2, a vacuum breaker valve 253 is provided on the upper surface of the hot water tank 20 in order to prevent backflow when sewage enters from the nozzle device 100. Piping 254 is connected to the vacuum breaker valve 253, and it is assumed that the expanded water flows out of the hot water tank 20 when the cleaning water is heated. It is configured to flow in the toilet bowl.

  The hot water tank 20 constitutes a hot water generating unit together with a hot water heater adjusting unit and the like (not shown), and is controlled by the control unit in the same manner as the nozzle device 100, so that the temperature of the internal cleaning water is set to a predetermined temperature. Adjust and hold the range.

  In addition, the hot water tank 20 is provided with hot water temperature measuring means including a thermistor (not shown) and a protector. As the protector, a thermostat with a fast response speed is used, and the hot water heater can be stopped by instantaneously detecting an abnormal temperature.

<2> Configuration of Nozzle Device and Nozzle Cleaning Operation FIG. 3 shows a perspective view of the overall appearance of the nozzle device with the nozzle in the storage position.
4 shows a sectional view of the nozzle device in the storage position, FIG. 5 shows a sectional view of AA shown in FIG. 3, FIG. 6 (a) shows a sectional view of the nozzle device in the bidet cleaning position, and (b) the nozzle device. The detailed sectional view of the front-end | tip part is shown. FIG. 7A shows a sectional view of the nozzle device at the butt cleaning position, and FIG. 7B shows a detailed sectional view of the tip of the nozzle device. FIG. 8A shows a top view of the nozzle unit, and FIG. 8B shows a cross-sectional view.

  As shown in FIG. 3, the nozzle device 100 has a configuration in which a casing 110 molded from a resin material is combined with an upper case 120 and a lower case 130 that can be separated into upper and lower parts. A nozzle guide 111 is formed, and a tip opening 112 is provided at one end of the nozzle guide 111.

  A nozzle shutter 140 that is pivotable up and down is pivotally supported above the tip opening 112 of the nozzle guide 111, and closes the tip opening 112 while the nozzle unit 200 is housed in the nozzle guide 111. When the nozzle unit 200 advances to the cleaning position, the nozzle shutter 140 is opened upward by pushing the tip of the nozzle unit 200 forward. When the nozzle unit 200 is stored in the storage position, the nozzle shutter 200 rotates downward by its own weight. It is the structure which closes.

A cylindrical nozzle unit 200 is slidably installed in the nozzle guide 111.
As shown in FIGS. 3 and 4, the storage position where the nozzle unit 200 is accommodated in the nozzle guide 111, and the nozzle unit 200 protrudes from the tip opening 112 as shown in FIGS. 6 (a) and 7 (a). It is possible to move back and forth between the two cleaning positions of the bidet cleaning position and the buttocks cleaning position.

  As shown in FIGS. 8A and 8B, the nozzle unit 200 includes a substantially cylindrical nozzle body 300, a substantially cylindrical nozzle cover 400 that accommodates the nozzle body 300, and the nozzle cover 400. It comprises the connecting means 500 to be pulled. The nozzle cover 400 includes a nozzle cover body 410 and a nozzle rack block 420 that are integrated. The nozzle cover main body 410 is formed by forming a thin stainless steel plate into a cylindrical shape, the front end surface is a closed surface, the rear end surface is an open surface, and the nozzle main body 300 can be inserted from the rear end surface. Yes.

  The nozzle body 300 and the nozzle cover 400 are slidable with respect to each other, and the nozzle body 300 and the nozzle cover 400 are stopped at a predetermined relative position by the connecting means 500 in the bidet cleaning position and the buttocks cleaning position. It is the composition to do. As shown in FIG. 6 (b), one jet opening 411 is provided on the upper surface of the nozzle cover main body 410, and at the bidet cleaning position, the nozzle cover main body 410 is overlapped with the bidet cleaning jet outlet 340. .

  Further, as shown in FIG. 7B, the butt cleaning jet outlet 320 is superposed at the butt cleaning position. The jet opening 411 has a larger opening than the bidet washing jet outlet 340 and the buttocks washing jet outlet 320, and the washing water hits the jet opening 411 so that the jet is not hindered.

  Further, in the present embodiment, the nozzle body is configured to have two functions of the buttocks cleaning function and the bidet cleaning function. However, the present invention is not limited to this. A configuration having only functions may be used. In this case, the nozzle body 300 and the nozzle cover 400 do not have to be configured to be slidable with each other, and either the bidet cleaning jet outlet 340 or the buttocks cleaning jet outlet 320 configured to overlap with the jet opening 411 is used. It only has to have.

  4 is a cross-sectional view of the nozzle unit 200 stored in the storage position, and FIG. 5 is a cross-sectional view taken along line AA shown in FIG. It is shown.

  In the vicinity of the tip opening 112 of the nozzle guide 111, a cleaning enlarged portion having a large inner diameter is installed, and the cleaning expanding portion sufficiently covers the ejection opening 411 on the upper surface of the nozzle cover main body 410 and its periphery at the storage position of the nozzle unit 200. It becomes the depth to be. A nozzle cleaning jet 151 is opened in the upper lateral tangential direction of the cleaning enlarged portion, and a nozzle cleaning channel 150 communicating with the nozzle cleaning jet 151 is installed outside the casing 110, and the cleaning water supply means and the hose (Not shown). The inner diameter of the cleaning enlarged portion is such that a slight gap is formed around the entire outer surface of the nozzle cover main body 410, and the cleaning water for cleaning the nozzle can be circulated through the gap.

  In the storage state of the nozzle unit, similarly to the bidet cleaning position shown in FIG. 6B, the ejection opening 411 of the nozzle cover main body 410 and the bidet cleaning ejection outlet 340 of the nozzle main body 300 are arranged in an overlapping manner. .

Since the nozzle cleaning jet 151 is configured to eject cleaning water in the lateral tangential direction of the nozzle guide 111, the cleaning water flows so as to swirl around the nozzle cover main body 410, and thus the cleaning water flows to the back side of the nozzle cover main body 410. The deposits on the nozzle cover 400 and the ejection opening 411 can be washed away. Further, a drain port 412 for discharging the cleaning water is provided at the lower part of the cleaning enlargement portion.

  Further, by moving the nozzle unit 200 forward from the storage position, not only the vicinity of the ejection opening 411 but also the entire nozzle cover 400 can be cleaned.

  By configuring the nozzle cover 400 with stainless steel, the stainless steel has a high free energy and high hydrophilicity when compared to a resin. The dirt and germs attached to the surface can be easily washed away, and it is difficult to rust even if the washing sewage is applied.

  In order to remove the germs adhering to the surface by this, warm water at a temperature higher than the warm water temperature for washing the human body part (for example, about 70 ° C. in the conventional configuration described in Patent Document 1) is required. In this form, it became possible at a temperature equivalent to the warm water temperature for washing the human body part.

  In an experiment by the inventor and a third party, it was confirmed that 99% or more of germs were removed by washing the nozzle cover surface at a predetermined flow rate with warm water of about 40 ° C. for a predetermined time.

  Since it is not necessary to clean the nozzle at a higher temperature than during local body cleaning, there is no danger of hot water being applied to the human body during nozzle cleaning and when switching to local body cleaning before and after cleaning. Equipment can be provided. In addition, since there is no need for parts such as a heater that rapidly raises the wash water and a hot water mixing valve that mixes the hot water in the hot water tank held at a high temperature, the use of the washing function of the human body is not impaired, and the cost is low. With a simple configuration, it is possible to remove germs attached to the nozzle device.

  In the present embodiment, the nozzle cleaning channel 150 and the nozzle cleaning nozzle 151 are provided for nozzle cleaning. However, if cleaning is performed only in the vicinity of the ejection opening 411, the nozzle cleaning channel 150 is used. It is not necessary to provide the nozzle cleaning nozzle 151, and the cleaning water is ejected by ejecting the cleaning water from the bidet cleaning nozzle 340 that is superposed on the ejection opening 411 in a state where the nozzle unit 200 is stored in the storage position. It is also possible to reflect off the inner surface of the nozzle guide 111 covering the upper portion of the opening 411 and spray it on the nozzle cover 400 to wash away the deposits on the surface.

<3> Configuration of Operation Unit FIG. 9 is a plan view of the operation unit in the present embodiment.

  As shown in the figure, the operation unit 52 is provided with a plurality of operation switches and display means. As switches for operating the cleaning function, there are provided a buttocks cleaning switch 60 for starting buttocks cleaning, a bidet cleaning switch 61 for starting bidet cleaning, and a stop switch 62 for stopping these cleaning operations.

  Further, as a switch for setting various functions, there is provided a heat retention interruption setting switch 63 for setting a power supply stop to the hot water heater for a predetermined time when hot water washing is not used for a long time such as at night. In order to display the setting state, when “insulation of heat insulation” is set, the insulation interruption setting display means 63a is turned on. When a predetermined time for the heat insulation interruption has elapsed, the setting of the “heat insulation interruption” is automatically canceled by the control unit, and the heat insulation interruption setting display means 63a is turned off. The hot water heater resumes energization, and the hot water in the hot water tank 20 is kept at a predetermined temperature suitable for human cleaning.

Further, a nozzle cleaning setting switch 64 that permits nozzle cleaning and a nozzle cleaning setting display means 64a that is turned on when nozzle cleaning permission is set are provided. When “nozzle cleaning” is set by the nozzle cleaning setting switch 64, the control unit automatically performs nozzle cleaning while being set to “warm-up interruption”.

  In the present embodiment, the set time for “warming interruption” is assumed to be about 8 hours assuming nighttime or the like, but is not limited to this and may be any time. Moreover, it is good also as a structure which a user sets interruption time by the operation part 52. FIG. Further, the heat retention interrupting switch 63 may be configured to also serve as a warming stop function of the toilet seat 53.

<4> Control and Operation of Nozzle Cleaning FIG. 10 is a flowchart of the nozzle cleaning start determination process of the control unit in the first embodiment of the present invention.

  The control unit determines whether or not the heat insulation interruption setting switch 63 is set to “heat insulation interruption” in the first step S1. If it is set to “interruption of heat retention”, it is next determined in step S2 whether or not “nozzle cleaning” is set by the nozzle cleaning setting switch 64.

  If “nozzle cleaning” is set, it is then determined in step S3 whether nozzle cleaning has already been performed during the current “warming interruption” setting. This is because the nozzle cleaning operation is not repeatedly performed during the “warming interruption” setting.

  Next, in S <b> 4, it is determined whether or not a human body washing request is generated by the user sitting on the toilet seat 53 and performing a human body washing start operation by the operation unit 52. When a human body cleaning request is generated, nozzle cleaning is not started and human body cleaning is performed. When there is no human body cleaning request and the conditions of S1, S2, and S3 are satisfied, the control unit starts nozzle cleaning.

  As described above, in the sanitary washing device according to the present embodiment, the intention of not using the sanitary washing device for a certain period of time is clarified when the user sets “warming interruption” by the heat retention interruption setting switch 63. Since the hot water in the tank 20 is not used, energization to the hot water heater is stopped.

  When “nozzle cleaning” is set by the nozzle cleaning setting switch 64, the nozzle cleaning is performed using the hot water remaining in the hot water tank 20, and the hot water in the hot water tank 20 is effectively utilized. This makes it possible to maintain the nozzle device in a sanitary manner, and does not impair the usability such that there is no hot water to be used for the next local cleaning.

  In the present embodiment, the nozzle cleaning setting switch 64 is provided and the nozzle cleaning is performed only when “nozzle cleaning” is set. However, the present invention is not limited to this. No nozzle 64 is provided, and when “warming interruption” is set by the heat retention interruption setting switch 63, nozzle cleaning may be automatically performed. In this case, there is no step S2 shown in FIG. 10, and the control flow is performed in the order of S1, S3, and S4.

(Embodiment 2)
FIG. 11 is a flowchart of the nozzle cleaning start determination process of the control unit according to the second embodiment of the present invention.

  The present embodiment is different from the first embodiment in that a determination of the elapsed time from the previous cleaning in S5 is added as a control step. Since it overlaps about S1-S4, description is abbreviate | omitted.

  The control unit determines whether or not a predetermined time has elapsed since the previous use of hot water such as local cleaning in S5. If the predetermined time has elapsed, it is determined that the hot water tank 20 is filled with the amount of water necessary for nozzle cleaning and hot water at a predetermined temperature, and the conditions in the steps S1, S2, S4, S3, and S4 are satisfied. If so, perform nozzle cleaning.

  By carrying out such control, the wash water in the hot water tank is heated to the temperature used for local washing, so ensure sufficient water volume and temperature to remove the germs attached to the nozzle device. Nozzle cleaning can be performed.

(Embodiment 3)
FIG. 13 is a flowchart of the nozzle cleaning start determination process of the control unit according to the third embodiment of the present invention.

  This embodiment is different from the second embodiment in that the determination of the hot water temperature in S6 is added as a control step. Since it overlaps about S1-S5, description is abbreviate | omitted.

  In S6, the control unit measures the temperature of the cleaning water in the hot water tank 20 by a hot water temperature measuring means (not shown), and determines whether the temperature required for nozzle cleaning has been reached.

  In the present embodiment, warm water of about 40 ° C. is required to wash away germs adhering to the surface of the nozzle cover 400. In order to stably supply hot water of about 40 ° C. during a predetermined period of nozzle cleaning, whether the temperature reaches about 1 to 2 ° C. higher in consideration of the water temperature drop in the hot water tank 20 during nozzle cleaning. judge. If not, the hot water heater is energized and heated up to the determination temperature. When the hot water temperature reaches the determination temperature and the conditions in steps S1, S2, S4, S3, and S4 are satisfied, the control unit starts nozzle cleaning.

  By carrying out such control, there is no need to perform nozzle cleaning at a higher temperature than during local body cleaning, a heater that rapidly raises the temperature of the cleaning water, and hot water mixing that mixes the hot water in the hot water tank held at a high temperature Since parts such as valves are not required, germs attached to the nozzle device can be removed with a low-cost and simple configuration without impairing the usability of the cleaning function of the human body part.

  INDUSTRIAL APPLICABILITY The present invention can be widely and suitably used in the field of a hot water storage type sanitary cleaning device that stores and warms cleaning water in a hot water tank.

20 Hot water tank 50 Sanitary washing device 52 Operation unit 63 Insulation stop setting switch (Insulation stop setting means)
64 Nozzle cleaning setting switch (nozzle cleaning setting means)
100 Nozzle device 151 Nozzle cleaning jet (nozzle cleaning means)
300 Nozzle body 320 Butt cleaning spout (spout)
340 Bidet washing spout (spout)
400 Nozzle cover 411 Spout opening

Claims (4)

A nozzle device for local cleaning of the human body;
Nozzle cleaning means for cleaning the nozzle device;
A hot water tank for storing hot water for cleaning;
A hot water heater for heating the wash water in the hot water tank;
An operation unit operated by a user;
Heat retention interruption setting means for stopping energization to the hot water heater for a certain time by operation of the operation unit,
While the energization to the warm water heater is stopped by the heat retention interruption setting means and after a predetermined time has elapsed since the last local cleaning is completed, the nozzle cleaning means performs cleaning of the nozzle device. ,
Sanitary washing device. Comprising nozzle cleaning setting means for setting execution of the nozzle cleaning by operation of the operation unit;
The nozzle cleaning is performed only when the setting of the nozzle cleaning by the nozzle cleaning setting unit and the energization stop to the hot water heater by the heat retention interruption setting unit are set,
The sanitary washing device according to claim 1. The nozzle cleaning is performed at substantially the same temperature as the hot water used for the local cleaning,
The sanitary washing device according to claim 1 or 2 . The nozzle device includes a nozzle body having a plurality of jet outlets for jetting cleaning water at a tip portion;
A cylindrical nozzle cover covering at least a part of the nozzle body,
The nozzle cover includes an ejection opening corresponding to at least one ejection port of the nozzle body,
Washing water ejected from the ejection port is ejected through the ejection opening,
The sanitary washing device according to any one of claims 1 to 3 .