JP6432875B2 - Sanitary washing device - Google Patents

Description

  The disclosed embodiments relate to a sanitary washing device.

  Conventionally, in a sanitary washing device that jets washing water to a user's body to wash a local part, a device provided with a sterilizing water generating unit that produces sterilizing water with washing water supplied from a water source has been proposed (for example, Patent Document 1). In the above-described sanitary washing device, the sterilizing water generated by the sterilizing water generating unit is ejected to the user's body.

  By the way, the sterilizing water generating unit described above includes, for example, an electrolytic cell in which a pair of electrodes are arranged in a container in which the cleaning water is stored, and a direct current is passed through the electrodes to electrolyze the cleaning water, It produces sterilized water.

JP-A-5-156688

  However, the ability to generate sterilizing water in the sterilizing water generating unit depends on the temperature of the cleaning water before generation. For this reason, depending on the use environment of the sanitary washing device, the temperature of the washing water supplied to the sterilizing water generating unit is relatively low, and the sterilizing water generating ability in the sterilizing water generating unit may be reduced.

  One aspect of the embodiment has been made in view of the above, and an object of the present invention is to provide a sanitary washing device capable of suppressing a decrease in the ability to produce sterilized water in the sterilized water producing unit.

  The sanitary washing device according to one aspect of the embodiment connects a water source and a washing unit that ejects the washing water to a user's body or a toilet, and distributes the washing water supplied from the water source to the washing unit. A flow path, a second flow path that branches from the first flow path, a sterilization water generation unit that is provided in the second flow path and generates sterilization water with the wash water supplied from the water source, and the second And a heat source for heating the cleaning water upstream of the sterilizing water generator in the flow path.

  As a result, since the washing water supplied to the sterilizing water generating unit is heated by the heat source, the temperature of the washing water before generation can be increased, and thus the sterilizing water generating capability in the sterilizing water generating unit is reduced. Can be suppressed.

  The heat source is a hot water storage type heat exchanger that is provided in the first flow path and stores hot water by heating the wash water supplied from the water source. Thereby, the heat generated in the hot water storage type heat exchanger can be used for heating the cleaning water supplied to the sterilizing water generating unit, and the energy efficiency can be improved.

  Furthermore, in the hot water storage type heat exchanger described above, since the relatively high temperature state is maintained by the cleaning water that is heated and stored, the cleaning water supplied to the sterilizing water generator is also continuously heated. . Therefore, for example, when the sanitary washing device is installed in a cold district or the like, it is possible to prevent the washing water or the sterilizing water generating unit supplied to the sterilizing water generating unit from freezing.

  In the second flow path, a flow path upstream of the sterilizing water generation unit is disposed adjacent to the heat source. Thereby, the flow path upstream of the sterilizing water generator can be efficiently heated by the heat from the heat source.

  In the second channel, the channel on the upstream side of the sterilizing water generator is disposed in contact with the heat source. Thereby, since the heat from the heat source is directly transmitted to the flow path upstream of the sterilizing water generator, the flow path can be more efficiently heated.

  In addition, a case portion that accommodates the heat source close to the inner wall surface is provided, and the sterilizing water generation unit and the flow channel upstream of the sterilization water generation unit in the second flow channel are the heat source and It is arrange | positioned between the inner wall surfaces where the said heat source of the said case part was gathered. Thereby, it is possible to heat the sterilizing water generating unit and the flow path upstream of the sterilizing water generating unit while effectively using the limited space in the case unit.

  In addition, the heat source is provided at a position where the second flow path is branched in the first flow path, and the supply destination of the wash water that has flowed into either the first flow path or the second flow path It is a solenoid valve to be switched. Thereby, the heat generated in the electromagnetic valve when switching the supply destination of the cleaning water can be used for heating the cleaning water supplied to the sterilizing water generating unit, and energy efficiency can be improved.

  According to one aspect of the embodiment, it is possible to suppress a decrease in the ability to generate sterilizing water in the sterilizing water generating unit.

FIG. 1 is a perspective view schematically showing a toilet apparatus provided with a sanitary washing device according to an embodiment. FIG. 2 is an explanatory diagram illustrating an example of the configuration of the sanitary washing device. FIG. 3 is a schematic cross-sectional view showing an example of the arrangement of the heat exchanger and the sterilizing water generator. FIG. 4 is a schematic cross-sectional view showing a modification of the arrangement of the heat exchanger and the sterilizing water generator.

  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.

  FIG. 1 is a perspective view schematically showing a toilet apparatus provided with a sanitary washing device according to an embodiment. In FIG. 1, for easy understanding, a three-dimensional orthogonal coordinate system in which the X-axis direction, the Y-axis direction, and the Z-axis direction that are orthogonal to each other are defined and the Z-axis positive direction is the vertical upward direction is shown. It is shown. Such an orthogonal coordinate system may also be shown in other drawings used in the following description.

  As shown in FIG. 1, a toilet device 1 includes a Western-style toilet (hereinafter referred to as “toilet”) 10 and a sanitary washing device 20 and is installed in a toilet room. The toilet bowl 10 includes a bowl portion 11 that can receive filth on the filth receiving surface 11a.

  When the toilet bowl 10 is washed, wash water is discharged from a spout (not shown) to the filth receiving surface 11a of the bowl portion 11, and the filth receiving surface 11a is washed. The cleaning water that has cleaned the filth receiving surface 11a is discharged together with the filth from a drain pipe (not shown). In addition, in FIG. 1, although the floor-standing toilet 10 was shown, it is not limited to this, A wall-hanging type may be sufficient.

  The sanitary washing device 20 is provided in the upper part of the toilet bowl 10. The sanitary washing device 20 includes a main body 30, a toilet seat 100, and a toilet lid 200. Both the toilet seat 100 and the toilet lid 200 are attached to the main body 30 so that they can be opened and closed.

  The main body unit 30 includes a nozzle unit 60 and a case unit 70. The nozzle unit 60 includes a cleaning nozzle 61 that ejects cleaning water to the user's body and the like. The cleaning nozzle 61 is configured to be movable back and forth with respect to the case unit 70.

  Specifically, for example, a driving source such as a motor (not shown) is connected to the cleaning nozzle 61. The cleaning nozzle 61 is advanced and retracted between a position where the cleaning nozzle 61 has advanced into the bowl portion 11 of the toilet bowl 10 and a position where the cleaning nozzle 61 retracts into the case portion 70 and is stored. In FIG. 1, the cleaning nozzle 61 at the advanced position is indicated by a two-dot chain line, while the cleaning nozzle 61 at the retracted position is indicated by a broken line.

  The cleaning nozzle 61 sprays cleaning water onto the user's body at the advanced position to clean the local area. Moreover, the washing nozzle 61 jets washing water to the filth receiving surface 11a of the toilet 10 before use at a retracted position to suppress the adhesion of filth. Furthermore, the washing nozzle 61 jets sterilizing water (described later) generated from the washing water at the retracted position to the filth receiving surface 11a of the toilet 10 after use to suppress the propagation of the bacteria. Hereinafter, jetting the cleaning water to the user's body is referred to as “human body jetting”, and jetting the cleaning water to the filth receiving surface 11a of the toilet bowl 10 may be referred to as “toilet cleaning jet”.

  In the above description, the toilet cleaning jet is performed at the position where the cleaning nozzle 61 is retracted. However, the present invention is not limited to this, and the toilet nozzle may be advanced into the bowl portion 11 to perform the toilet cleaning jet. . The above-described cleaning nozzle 61 corresponds to an example of a cleaning unit.

  The case part 70 accommodates the nozzle unit 60 described above. The case part 70 will be described in detail later. The case portion 70 is provided with a seating detection sensor 80. The seating detection sensor 80 is a sensor that can detect that the user is sitting on the toilet seat 100, and outputs a signal indicating the seating when the seating is detected. As the seating detection sensor 80, for example, a light emitting / receiving distance sensor can be used. The seating detection sensor 80 is not limited to the above-described distance sensor, and other types of sensors such as a load sensor that detects a user's load on the toilet seat 100 may be used.

  By the way, what was provided with the sterilization water production | generation part which produces | generates sterilization water with washing water is proposed in the above sanitary washing apparatuses. In addition, as mentioned above, the sterilized water produced | generated in the sterilized water production | generation part is jetted, for example to the toilet bowl after use.

  The ability to generate sterilizing water in such a sterilizing water generator depends on the temperature of the cleaning water before generation. For this reason, depending on the use environment of the sanitary washing device, the temperature of the washing water supplied to the sterilizing water generating unit is relatively low, and the sterilizing water generating ability in the sterilizing water generating unit may be reduced.

  Therefore, the sanitary washing device 20 according to the embodiment includes a heat source that heats the washing water upstream of the sterilizing water generation unit. Thereby, the fall of the production | generation capability of the sterilization water in a sterilization water production | generation part can be suppressed. Hereinafter, the configuration of the sanitary washing device 20 will be described in detail.

  FIG. 2 is an explanatory diagram illustrating an example of the configuration of the sanitary washing device 20. As shown in FIG. 2, the sanitary washing device 20 includes an operation unit 300.

  The operation unit 300 includes an operation button, an operation knob, and the like for inputting a start instruction and a stop instruction for the human body washing ejection by the user, and is provided at an appropriate position in the toilet room. As the operation button to which the above-described instruction for starting the human body washing jet is inputted, “wet washing” for washing the local portion, “soft washing” for gently washing the local portion, and “bidet washing” can be selected. Note that the “wet washing” described above is an example and is not limited, and the type and number of local washings selected can be changed as appropriate.

  The operation unit 300 outputs a signal indicating a start instruction or the like input from the user via an operation button or the like. For example, a remote controller can be used as the operation unit 300, but the operation unit 300 is not limited thereto, and may be attached to the main body unit 30.

  The main body 30 of the sanitary washing device 20 includes a water supply unit 40 and a control unit 90. The water supply unit 40 supplies the cleaning water from the water source A to the nozzle unit 60. Specifically, the water supply unit 40 includes a first flow path 41 and a second flow path 42. In FIG. 2, the first flow path 41 is indicated by a double line and the second flow path 42 is indicated by a thick line for convenience of understanding.

  The first flow path 41 connects the water source A such as a water pipe and the cleaning nozzle 61 of the nozzle unit 60, and distributes the cleaning water supplied from the water source A to the cleaning nozzle 61. Various instruments such as valves are provided in the first flow path 41 and the second flow path 42.

  Specifically, in the first flow path 41, in order from the upstream side, a strainer 44, a flow path opening / closing electromagnetic valve 45, a pressure regulating valve 46, a safety valve 47, a flow path switching electromagnetic valve 48, and a hot water storage type heat exchanger 49. (Hereinafter referred to as “heat exchanger 49”), a first check valve 50 and a negative pressure release valve 51 are provided.

  The second flow path 42 branches off from the first flow path 41 in the above-described electromagnetic valve 48 for switching the flow path, bypasses the heat exchanger 49, and passes between the first check valve 50 and the negative pressure release valve 51. Merge with the first flow path 41. The second flow path 42 is provided with a sterilizing water generator 52 and a second check valve 53 in order from the upstream side. The second flow path 42 is branched again from the first flow path 41 in the nozzle unit 60, which will be described later.

  The cleaning nozzle 61 of the nozzle unit 60 includes a human body jet 62 for jetting cleaning water to the user's body, and a toilet jet 63 for jetting cleaning water or sterilizing water to the filth receiving surface 11 a of the toilet 10. .

  Three human body jets 62 are provided above the cleaning nozzle 61, while one toilet jet 63 is provided below the cleaning nozzle 61.

  Specifically, the human body jet port 62 includes a first jet port 62a, a second jet port 62b, and a third jet port 62c. For example, the first jet port 62 a is a jet port used when “wet cleaning” is selected in the operation unit 300. The second jet port 62 b is a jet port used when “soft wash” is selected in the operation unit 300. The third jet outlet 62 c is a jet outlet used when “bidet cleaning” is selected by the operation unit 300.

  In the above description, the number of the human body jets 62 is three. However, the number is not limited to this, and may be two or less or four or more, for example. Similarly, the number of toilet outlets 63 is not limited to one and may be two or more.

  The nozzle unit 60 includes a nozzle cleaning chamber 64 and a flow rate / flow path switching valve 66 in addition to the cleaning nozzle 61 described above.

  The nozzle cleaning chamber 64 is fixedly provided inside the case portion 70 (see FIG. 1). The nozzle cleaning chamber 64 has an internal space through which the cleaning nozzle 61 can pass, and includes a cleaning chamber jet 65 that opens toward the internal space.

  The flow rate / flow path switching valve 66 is provided on the rear end side of the cleaning nozzle 61. The flow rate / flow path switching valve 66 adjusts the flow rate of the cleaning water flowing through the cleaning nozzle 61. In addition, the flow rate / flow path switching valve 66 supplies the washing water to any of the first jet port 62a, the second jet port 62b, the third jet port 62c, the toilet jet 63, and the cleaning chamber jet 65. Switch.

  Here, the flow path connected to each of the jet ports 62a to 62c, 63, 65 will be described. The 1st flow path 41 in which the heat exchanger 49 is provided is connected to the 1st jet nozzle 62a, the 2nd jet nozzle 62b, and the 3rd jet nozzle 62c. In FIG. 2, reference numeral 41a is given to the first flow path 41 connected to the first jet outlet 62a, reference numeral 41b is given to the first flow path 41 connected to the second jet outlet 62b, and third jet outlet 62c. Reference numeral 41c is assigned to the first flow path 41 connected to the.

  On the other hand, the second flow path 42 in which the sterilizing water generating part 52 is provided is connected to the toilet outlet 63 and the cleaning chamber outlet 65. In FIG. 2, reference numeral 42 a is assigned to the second flow path 42 connected to the toilet outlet 63, and reference numeral 42 b is assigned to the second flow path 42 connected to the cleaning chamber outlet 65.

  Thus, after the second flow path 42 joins the first flow path 41 between the first check valve 50 and the negative pressure release valve 51, the first flow path 41 again in the flow rate / flow path switching valve 66. And is connected to the toilet outlet 63 and the cleaning chamber outlet 65 of the cleaning nozzle 61.

  Next, various instruments provided in the first flow path 41 will be described. The strainer 44 removes foreign matters such as dust mixed in the cleaning water. The electromagnetic valve 45 is a normally closed valve that is closed when no power is supplied, and opens and closes the first flow path 41 in accordance with a control signal from the control unit 90.

  The pressure regulating valve 46 adjusts the water pressure of the cleaning water in the first flow path 41 to a predetermined water pressure or less. The safety valve 47 opens when the water pressure of the wash water in the first flow path 41 rises excessively, and discharges the wash water to, for example, the bowl portion 11 of the toilet bowl 10. By providing such a safety valve 47, for example, even when a malfunction occurs in the pressure regulating valve 46 and it becomes difficult to adjust the water pressure, excessive water pressure acts on the first flow path 41, the heat exchanger 49, and the like. Can be prevented.

  The electromagnetic valve 48 for switching the flow path is provided at a position where the second flow path 42 is branched in the first flow path 41. Further, the electromagnetic valve 48 switches the supply destination of the flowed-in washing water to either the first flow path 41 or the second flow path 42 based on a control signal from the control unit 90. Specifically, the solenoid valve 48 is configured such that the supply destination of the wash water when not energized is the first flow path 41 and the supply destination of the wash water when energized is the second flow path 42.

  The heat exchanger 49 includes a hot water storage tank 49a and a heater 49b. Specifically, the heat exchanger 49 stores the hot water supplied from the water source A in the hot water storage tank 49a while being heated to a predetermined temperature by the heater 49b. A sheathed heater, a ceramic heater, or the like can be used as the heater 49b.

  The first check valve 50 is provided in the first flow path 41 between the heat exchanger 49 and the position B where the second flow path 42 joins. As a result, the washing water can be prevented from flowing back from the second flow path 42 to the heat exchanger 49 via the first flow path 41, and the water pressure from the second flow path 42 acts on the heat exchanger 49. Can be prevented.

  The negative pressure release valve (vacuum breaker) 51 is provided in a section where the first flow path 41 and the second flow path 42 merge. As already described, the second flow path 42 branches off from the first flow path 41 again at the flow rate / flow path switching valve 66. Therefore, the above-mentioned “section where the first flow path 41 and the second flow path 42 merge” refers to the flow rate / flow path switching valve from the position B of the first flow path 41 where the second flow path 42 is merged. It means the flow path to position C where 66 is provided.

  The negative pressure breaking valve 51 can prevent a back flow from occurring from the human body jet 62 when, for example, a negative pressure is generated in the first flow path 41. Furthermore, the negative pressure breaking valve 51 can prevent a back flow from being generated from the toilet outlet 63 and the washing chamber outlet 65 when, for example, a negative pressure is generated in the second flow path 42.

  Thus, since the negative pressure release valve 51 is provided in the section where the first flow path 41 and the second flow path 42 merge, the negative pressure release valve 51 of the first flow path 41 and the second flow path 42 is shared. The sanitary washing device 20 can be downsized.

  Next, various instruments provided in the second flow path 42 will be described. The sterilizing water generating unit 52 generates sterilizing water with the cleaning water supplied from the water source A. Although illustration is omitted, the sterilizing water generating unit 52 includes, for example, an electrolytic cell in which a pair of electrodes are disposed in a container in which the cleaning water is stored, and a direct current is supplied to the electrodes to electrolyze the cleaning water. This produces sterilized water.

  The produced sterilizing water is, for example, a liquid containing hypochlorous acid, and sterilizes or removes or decomposes dirt due to ammonia or oil. The sterilizing water is not limited to the liquid containing hypochlorous acid described above. That is, for example, the sterilizing water may be a solution containing metal ions such as silver ions or copper ions, a solution containing electrolytic chlorine or ozone, or acidic water or alkaline water.

  In the following description, the flow path upstream of the sterilizing water generation unit 52 in the second flow path 42 is referred to as “upstream second flow path 42 c”, and the flow path downstream of the sterilization water generation unit 52 is “ It may be referred to as a downstream second flow path 42d ”. The sterilizing water generator 52 and the upstream second flow path 42c are disposed adjacent to the heat exchanger 49, which will be described later.

  Note that when the sterilizing water generator 52 is not energized, no sterilizing water is generated. For this reason, the wash water that has flowed into the sterilizing water generator 52 from the upstream second flow path 42c flows out directly into the downstream second flow path 42d.

  The second check valve 53 is provided between the sterilizing water generator 52 and the position B where the first flow path 41 joins in the second flow path 42. Thereby, it is possible to prevent the washing water from flowing backward from the first flow path 41 to the sterilizing water generating section 52 via the downstream second flow path 42d, and the water pressure from the first flow path 41 generates sterilizing water. It can prevent acting on the part 52.

  Next, the control unit 90 will be described. The control unit 90 controls the sanitary washing device 20 as a whole, and includes, for example, an arithmetic processing device (not shown) such as a CPU (Central Processing Unit) and a storage device (not shown) such as a RAM (Random Access Memory).

  The controller 90 controls the electromagnetic valves 45 and 48, the heat exchanger 49, the sterilizing water generator 52, and the nozzle unit 60 based on various input signals. The various signals are, for example, signals input from the seating detection sensor 80, the operation unit 300, or the like.

  More specifically, when a signal indicating seating is input from the seating detection sensor 80, the control unit 90 performs toilet flushing ejection. Specifically, the control unit 90 opens the electromagnetic valve 45 and energizes the electromagnetic valve 48 to switch the supply destination of the cleaning water to the second flow path 42. Further, the control unit 90 switches the supply destination of the washing water in the flow rate / flow path switching valve 66 of the nozzle unit 60 to the toilet outlet 63. The sterilizing water generator 52 is not energized.

  Thus, the wash water supplied from the water source A flows through the first flow path 41 and then flows into the upstream second flow path 42c and the downstream second flow path 42d via the electromagnetic valve 48. Then, after returning to the first flow path 41 again at the merge position B, the wash water is ejected from the toilet outlet 63 to the filth receiving surface 11a of the toilet 10 through the flow rate / flow path switching valve 66. Thereby, adhesion of the filth in the toilet bowl 10 can be suppressed.

  Thus, the wash water used for toilet flushing jets passes through the second flow path 42 that branches from the first flow path 41 and bypasses the heat exchanger 49. That is, the flushing water (hot water) heated by the heat exchanger 49 is not used for toilet flushing. Thereby, unnecessary use of the washing water heated by the heat exchanger 49 can be prevented.

  In the toilet flushing jet before using the toilet, the sterilizing water generating unit 52 is not energized. However, the present invention is not limited to this, and the sterilizing water generating unit 52 is energized to generate sterilizing water. Then, toilet flushing may be performed with sterilized water.

  Subsequently, when a signal indicating an instruction to start the human body cleaning jet is input from the operation unit 300, the control unit 90 advances the cleaning nozzle 61 into the bowl 11 of the toilet 10 and performs the human body cleaning jet. . When the control unit 90 receives a signal indicating an instruction to stop the human body cleaning jet from the operation unit 300, the control unit 90 stops the human body cleaning jet and moves the cleaning nozzle 61 backward while cleaning the cleaning nozzle 61. Store in.

  The cleaning of the cleaning nozzle 61 and the human body cleaning jet will be described in detail. Cleaning of the cleaning nozzle 61 is performed in the nozzle cleaning chamber 64 when the cleaning nozzle 61 advances and retracts. Specifically, the control unit 90 opens the electromagnetic valve 45 and energizes the electromagnetic valve 48 to switch the supply destination of the cleaning water to the second flow path 42. In addition, the control unit 90 energizes the sterilizing water generation unit 52 to generate sterilizing water, and switches the supply destination of the cleaning water in the flow rate / flow path switching valve 66 to the cleaning chamber ejection port 65.

  Thereby, the wash water supplied from the water source A flows through the first flow path 41, then flows to the upstream second flow path 42 c via the electromagnetic valve 48, and flows into the sterilized water generation unit 52.

  Here, since the solenoid valve 48 is energized, it generates heat. Therefore, the washing water flowing to the upstream second flow path 42c is heated by the heat of the electromagnetic valve 48 being transmitted. Thereby, the temperature of the washing water before production | generation can be raised, Therefore The fall of the production | generation capability of the sterilization water in the sterilization water production | generation part 52 can be suppressed.

  As described above, the electromagnetic valve 48 is used as a heat source for heating the cleaning water supplied to the sterilizing water generator 52. That is, the heat generated in the electromagnetic valve 48 while switching the supply destination of the wash water to the second flow path 42 side can also be used for heating the wash water supplied to the sterilizing water generating unit 52, and the energy Efficiency can be improved.

  The sterilized water generated by the sterilized water generating unit 52 flows out to the downstream second flow path 42d, returns to the first flow path 41 again at the merge position B, and then passes through the flow rate / flow path switching valve 66. It is ejected from the cleaning chamber jet 65 to the internal space of the nozzle cleaning chamber 64. As a result, the outer portion of the cleaning nozzle 61 can be cleaned.

  As described above, the cleaning water used for nozzle cleaning passes through the second flow path 42 that branches from the first flow path 41 and bypasses the heat exchanger 49. That is, the cleaning water (hot water) heated by the heat exchanger 49 is not used for nozzle cleaning. Thereby, unnecessary use of the washing water heated by the heat exchanger 49 can be prevented.

  In the above description, the sterilizing water is used in the nozzle cleaning when the cleaning nozzle 61 advances and retracts. However, the present invention is not limited to this. That is, the cleaning water may be jetted without energizing the sterilizing water generator 52 during nozzle cleaning. Further, any one of the nozzle cleaning performed when the cleaning nozzle 61 is advanced and retracted may be performed with cleaning water and the other with sterilizing water.

  Next, the human body cleaning jet will be described. The control unit 90 opens the electromagnetic valve 45 and stops energization of the electromagnetic valve 48 to switch the supply destination of the cleaning water to the first flow path 41. Further, the control unit 90 determines the supply destination of the cleaning water in the flow rate / flow path switching valve 66 of the first to third jet outlets 62a to 62c in accordance with a signal indicating “wet cleaning” selected by the operation unit 300. Switch to one of them. Hereinafter, for convenience of understanding, the switched first to third jet nozzles 62a to 62c are referred to as “human jet nozzle 62”. Further, the control unit 90 does not energize the sterilizing water generation unit 52.

  Accordingly, the wash water supplied from the water source A is supplied from the first flow path 41 to the heat exchanger 49 and heated. The heated washing water flows from the first flow path 41 through the flow rate / flow path switching valve 66 and is ejected from the human body ejection port 62 to the user's body. Thereby, a local part can be wash | cleaned.

  Subsequently, after the user leaves the toilet seat 100, the control unit 90 performs toilet flushing jetting with sterilized water. Specifically, the control unit 90 opens the electromagnetic valve 45 when a predetermined time (for example, several seconds to several tens of seconds) elapses after the user leaves the toilet seat 100 and the signal of the seating detection sensor 80 is not input. Then, the electromagnetic valve 48 is energized to switch the supply destination of the cleaning water to the second flow path 42. Further, the control unit 90 energizes the sterilizing water generating unit 52 to generate sterilizing water, and switches the supply destination of the washing water in the flow rate / flow path switching valve 66 to the toilet outlet 63.

  Thereby, the wash water supplied from the water source A flows through the first flow path 41, then flows to the upstream second flow path 42 c via the electromagnetic valve 48, and flows into the sterilized water generation unit 52. Here, as described above, the temperature of the cleaning water before generation is raised by the heat of the electromagnetic valve 48.

  The sterilized water generated by the sterilized water generating unit 52 flows out to the downstream second flow path 42d, returns to the first flow path 41 again at the merge position B, and then passes through the flow rate / flow path switching valve 66. It is ejected from the toilet outlet 63 to the waste receiving surface 11a of the toilet 10. Thereby, propagation of the bacteria of the toilet 10 can be suppressed.

  As described above, the wash water heated by the heat exchanger 49 is ejected from the human body jet 62, while the wash water not heated by the heat exchanger 49 is jetted from the toilet jet 63, thereby exchanging heat. Unnecessary use of the washing water heated by the vessel 49 can be prevented.

  Next, the arrangement relationship between the heat exchanger 49 and the sterilizing water generator 52 in the case 70 will be described with reference to FIG. FIG. 3 is a schematic cross-sectional view showing an example of the arrangement of the heat exchanger 49 and the sterilizing water generator 52.

  As shown in FIG. 3, an internal space 72 surrounded by an inner wall surface 71 is formed in the case portion 70 of the sanitary washing device 20, and the heat exchanger 49, the sterilizing water generation unit 52, and the nozzle unit 60 are formed in the internal space 72. Various parts such as are arranged and accommodated.

  The internal space 72 is a substantially rectangular space in which the X axis is the longitudinal direction and the Y axis is the short direction when viewed from above. In addition, the shape of the internal space 72 shown in FIG. 3 is an illustration and is not limited.

  In FIG. 3, in the internal space 72, the center line in the longitudinal direction is indicated by a one-dot chain line, and a symbol C is given. In the following, words indicating directions such as “left side” and “right side” are used, but these words mean “left side” and “right side” in the top view of FIG. Specifically, the X-axis negative direction is called “left side”, the X-axis positive direction is called “right side”, the Y-axis negative direction is called “front side”, and the Y-axis positive direction is called “back side”. .

  The nozzle unit 60 is disposed near the center line C in the internal space 72. The heat exchanger 49, more specifically, the hot water storage tank 49 a that stores hot water W is disposed so as to be offset toward the internal space 72 on the left side of the center line C. Moreover, although the control part 90 is offset and arrange | positioned in the internal space 72 of the right side rather than the centerline C, illustration is abbreviate | omitted for simplification of a figure.

  Thus, the hot water storage tank 49a of the heat exchanger 49 is accommodated in the case part 70 in a state of being brought close to the inner wall surfaces 71 on the left side, the front side, and the back side.

  And the sterilizing water production | generation part 52 and the upstream 2nd flow path 42c are arrange | positioned between the heat exchanger 49 and the inner wall surface 71 where the heat exchanger 49 of the case part 70 was approached. In FIG. 3, a space formed between the heat exchanger 49 and the inner wall surface 71 to which the heat exchanger 49 of the case portion 70 is put is surrounded by a one-dot chain line, and hereinafter referred to as “sterilizing water generating portion accommodating space 73”. I will do it.

  Since the sterilizing water production | generation part accommodation space 73 is a comparatively narrow space, the heat which arises from the heat exchanger 49 tends to accumulate. Therefore, by disposing the sterilizing water generating unit 52 and the like in the sterilizing water generating unit accommodating space 73, the sterilizing water generating unit 52 and the upstream second flow path are effectively used while the limited space in the case unit 70 is effectively used. The heating of 42c can be performed efficiently.

  Thus, the hot water storage tank 49a of the heat exchanger 49 is used as a heat source for heating the cleaning water supplied to the sterilizing water generating unit 52 and the sterilizing water generating unit 52 itself. Thereby, the heat generated in the heat exchanger 49 can be used for heating the cleaning water supplied to the sterilizing water generator 52, and energy efficiency can be improved.

  Further, in the heat exchanger 49 described above, the state of relatively high temperature is maintained by the stored hot water W, so that the cleaning water supplied to the sterilizing water generator 52 is also continuously heated. Therefore, for example, when the sanitary washing device 20 is installed in a cold district or the like, it is possible to prevent the washing water supplied to the sterilizing water generating unit 52 or the sterilizing water generating unit 52 from freezing.

  The sterilizing water generator 52 and the upstream second flow path 42c are disposed adjacent to the hot water storage tank 49a of the heat exchanger 49 serving as a heat source. Thereby, the sterilizing water production | generation part 52 and the upstream 2nd flow path 42c can be efficiently heated with the heat from the heat exchanger 49. FIG.

  Here, “disposed adjacently” means, for example, that the heat generated in the heat exchanger 49 is disposed in a range where heat can be transferred. Specifically, for example, when the temperature of the cleaning water immediately after being supplied from the water source A to the first flow path 41 is T0 and the temperature of the cleaning water immediately before being supplied to the sterilizing water generating unit 52 is T1, the temperature T1 is the heat. It means that it is arranged in a range higher than the temperature T0 due to the heat of the exchanger 49.

  Moreover, it is preferable that the sterilizing water production | generation part 52 and the upstream 2nd flow path 42c are arrange | positioned in contact with the hot water storage tank 49a which is a heat source. Thereby, since the heat of the heat exchanger 49 is directly transmitted to the sterilizing water generator 52 and the upstream second flow path 42c, the sterilizing water generator 52 and the upstream second flow path 42c are heated more efficiently. can do.

  In the above description, the sterilizing water generator 52 and the upstream second flow path 42c are in contact with the hot water storage tank 49a. However, the present invention is not limited to this. For example, the sterilizing water generator 52 and the upstream second flow path 42c A gap may be formed between the hot water storage tank 49a. Even when such a gap is formed, the sterilizing water generator 52 and the upstream second flow path 42c can be sufficiently heated by the heat from the heat exchanger 49.

  In the above description, the sterilizing water generation unit 52 and the upstream second flow path 42c are adjacent to the heat exchanger 49 in a top view, but are not limited thereto, and may be adjacent to each other in a side view. That is, although illustration is abbreviate | omitted, the sterilization water production | generation part 52 grade | etc., Is arrange | positioned in the sterilization water production | generation part accommodation space 73 formed in the upper side (Z-axis positive direction) or the lower side (Z-axis negative direction) of the heat exchanger 49. You may be made to do.

  In the above description, the heat exchanger 49 is arranged to be offset toward the inner space 72 on the left side of the center line C. However, this is merely an example, and the heat exchanger 49 is, for example, on the right side of the center line C. The internal space 72 may be arranged so as to be offset. In this case, the control unit 90 is arranged so as to be offset from the inner space 72 on the left side of the center line C.

  Furthermore, the arrangement of the heat exchanger 49 is not limited to the inner space 72 on the left side or the right side of the center line C described above. FIG. 4 is a schematic cross-sectional view showing a modification of the arrangement of the heat exchanger 49 and the sterilizing water generator 52. In FIG. 4, in the internal space 72, the center line in the short direction is indicated by a one-dot chain line, and is denoted by reference numeral C <b> 1. In the following, the same components as those in the above-described embodiment are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 4, the heat exchanger 49 is arranged closer to the inner space 72 on the back side than the center line C <b> 1 in the short direction. Moreover, although illustration is abbreviate | omitted, the control part 90 is offset and located in the internal space 72 of the front side rather than the centerline C1.

  Thus, the hot water storage tank 49a of the heat exchanger 49 is accommodated in the case part 70 in a state of being brought close to the inner wall surfaces 71 on the back side, the left side, and the right side.

  And the sterilizing water production | generation part 52 and the upstream 2nd flow path 42c are the sterilization water production | generation part accommodation space formed between the heat exchanger 49 and the inner wall surface 71 where the heat exchanger 49 of the case part 70 was approached. 73.

  As described above, even when the heat exchanger 49 is arranged closer to the inner space 72 on the back side than the center line C1, the sterilizing water generating unit 52 is placed in the relatively narrow sterilizing water generating unit accommodating space 73. Etc. can efficiently heat the sterilizing water generator 52 and the like.

  In the above description, the heat exchanger 49 is arranged so as to be offset from the inner space 72 on the back side with respect to the center line C1. However, the heat exchanger 49 is not limited to this. For example, the heat exchanger 49 is disposed in the inner space 72 on the front side with respect to the center line C1. It may be arranged so as to be offset. In this case, the control unit 90 is arranged so as to be offset from the inner space 72 on the back side with respect to the center line C1.

  As described above, the sanitary washing device 20 according to the embodiment includes the first flow path 41, the second flow path 42, the sterilizing water generator 52, and the heat source (the heat exchanger 49 and the electromagnetic valve 48). Prepare. The first flow path 41 connects the water source A and the cleaning nozzle 61 that ejects the cleaning water to the user's body or the toilet 10, and distributes the cleaning water supplied from the water source A to the cleaning nozzle 61. The second flow path 42 branches from the first flow path 41. The sterilizing water generating unit 52 is provided in the second flow path 42 and generates sterilizing water with the cleaning water supplied from the water source A. The heat source (heat exchanger 49, electromagnetic valve 48) heats the cleaning water upstream of the sterilizing water generator 52 in the second flow path 42. Thereby, the fall of the production | generation capability of the sterilization water in the sterilization water production | generation part 52 can be suppressed.

  In the above-described embodiment, the toilet flushing and ejection is performed at the timing before and after the use of the toilet bowl. However, the present invention is not limited to this, and only one timing may be performed.

  Furthermore, the timing of the toilet flushing jet is not limited to before or after using the toilet 10, and for example, when the toilet device 1 is not used for a long time, the toilet flushing jet may be performed. Further suppression is possible.

  In the above description, the user's seating is detected by the seating detection sensor 80 and the toilet bowl is ejected. However, the present invention is not limited to this. That is, for example, an entrance detection sensor that detects a user entering the toilet room and a human body detection sensor that detects a user in front of the sanitary washing device 20 are provided and output from the entrance detection sensor or the human body detection sensor. A toilet flushing jet may be performed based on the signal.

  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.

1 Toilet device 10 Western-style toilet (toilet)
DESCRIPTION OF SYMBOLS 20 Sanitary washing apparatus 30 Main body part 40 Water supply part 41 1st flow path 42 2nd flow path 48 Solenoid valve 49 Hot water storage type heat exchanger (heat exchanger)
DESCRIPTION OF SYMBOLS 50 1st check valve 51 Negative pressure destruction valve 52 Sterilization water production | generation part 60 Nozzle unit 61 Washing nozzle 62 Human body jet 63 Toilet jet 65 Cleaning room jet 66 Flow volume / flow-path switching valve 70 Case part 71 Inner wall surface 72 Internal space 73 Disinfecting water generating unit accommodating space 80 Seating detection sensor 90 Control unit 300 Operation unit

Claims (3)

A first flow path for connecting a water source and a cleaning unit that ejects the cleaning water to a user's body or a toilet, and flowing the cleaning water supplied from the water source to the cleaning unit;
A second flow path branched from the first flow path;
A sterilizing water generating unit that is provided in the second flow path and generates sterilizing water with the cleaning water supplied from the water source;
A heat source for heating cleaning water upstream of the sterilizing water generating unit in the second flow path ,
In the second flow path, the flow path on the upstream side of the sterilizing water generator is disposed in contact with the heat source.
Sanitary washing device characterized by . A first flow path for connecting a water source and a cleaning unit that ejects the cleaning water to a user's body or a toilet, and flowing the cleaning water supplied from the water source to the cleaning unit;
A second flow path branched from the first flow path;
A sterilizing water generating unit that is provided in the second flow path and generates sterilizing water with the cleaning water supplied from the water source;
A heat source for heating the cleaning water upstream of the sterilizing water generator in the second flow path ;
A case portion that accommodates the heat source in a state of being brought close to an inner wall surface,
The flow path upstream of the sterilizing water generating section in the sterilizing water generating section and the second flow path is disposed between the heat source and the inner wall surface of the case section where the heat source is brought together. about
Sanitary washing device characterized by . The heat source is
The sanitary washing apparatus according to claim 1 or 2 , wherein the sanitary washing apparatus is a hot water storage type heat exchanger that is provided in the first flow path and heats and stores the wash water supplied from the water source.

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