JP3567752B2 - Sanitary washing equipment - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a sanitary washing device for washing a human body part by ejecting washing water from an ejection port, and more particularly to a sanitary washing device capable of controlling the temperature of the washing water.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there has been known a sanitary washing device that ejects washing water to wash a human body part. In such a sanitary washing device, in order to perform comfortable washing, the washing water is often used after being heated to warm water close to the body temperature. As means for warming the washing water, those using a so-called hot water storage type heat exchanger and those using a heat exchanger of a type that heats the washing water to a predetermined temperature while passing the washing water in the same manner as an instantaneous water heater are known. Have been. In a sanitary washing device that can jet cleaning water after warming the cleaning water, the temperature of the cleaning water can be adjusted. By adjusting the temperature of the washing water, the user can obtain a feeling of washing according to his / her preference.
[0003]
[Problems to be solved by the invention]
However, in the conventional sanitary washing device, the temperature of the washing water flowing out of the heat exchanger can only be adjusted. The sensible temperature of the user changes according to various conditions. For example, it is a well-known fact that even with hot water at a constant temperature, winter is felt hotter than in summer. Some sanitary washing devices allow a user to adjust washing conditions such as the amount of washing water, in addition to the temperature of washing water. The perceived temperature also changes depending on the washing conditions.
[0004]
Even if the washing water is jetted at a constant temperature, the washing feeling is different if the sensible temperature is different. In the conventional sanitary washing device, even if the temperature is set according to the user's preference before the start of washing, the perceived temperature of the washing water varies depending on the various conditions described above, and the intended washing feeling may not be obtained. there were. In extreme cases, the user may feel discomfort. In order to obtain a feeling of washing according to one's own preference, it is necessary to readjust the temperature after the start of washing, and the operation is cumbersome.
[0005]
An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a sanitary washing device capable of controlling the sensible temperature of washing water.
[0006]
[Means for Solving the Problems and Their Functions and Effects]
In order to solve at least a part of such a problem, the present invention has the following configurations.
The sanitary washing device of the present invention,
A sanitary washing device for washing a human body part by squirting washing water supplied from the outside from a spout,
Detecting means for detecting a parameter contributing to the perceived temperature when the washing water at a constant temperature is jetted to a local part,
A temperature control unit that changes the temperature of the washing water in accordance with the deviation of the parameter.
[0007]
According to such a sanitary washing device, when a parameter contributing to the perceived temperature changes,
The temperature of the washing water can be controlled according to the fluctuation. Conventionally, the temperature of the cleaning water has been controlled based only on the input value of the set temperature. In the sanitary washing device of the present invention, by controlling the temperature of the washing water based on the deviation of the parameter contributing to the perceived temperature, it is possible to realize a control that gives a more appropriate washing feeling, which has not been available in the past. The value of the parameter contributing to the sensible temperature changes according to various conditions. Some parameters change in the short term during a single wash, while others change in the long term each time the sanitary washing device is used. As control according to the deviation of the parameter that changes in this way, control that keeps the perceived temperature of the washing water constant is also possible, and control that intentionally changes the perceived temperature according to the deviation of the parameter is also possible. . For example, under conditions where the perceived temperature is felt low, more comfortable cleaning can be achieved by compensating for the decrease and increasing the temperature of the cleaning water to an excessive extent.
[0008]
As a sanitary washing device that enables control to keep the sensible temperature constant, in the sanitary washing device,
Having a correction amount storage means for storing the relationship between the deviation of the parameter and the correction amount of the temperature of the washing water required to keep the sensible temperature constant,
The temperature control means may be means for performing control for changing the temperature of the washing water by a correction amount obtained by referring to the correction amount storage means.
[0009]
In this case, by referring to the correction amount storage means, it is possible to control the temperature of the washing water to be jetted so that the sensible temperature is constant. The relationship between the parameter deviation and the amount of correction of the temperature of the washing water required to obtain a constant sensible temperature is stored in advance. This relationship can be determined by a so-called sensory test. In other words, the subject uses the sanitary washing device while variously changing the parameters and the temperature of the washing water, and selects a combination that makes the sensed temperature substantially the same. By performing such a test on a large number of subjects, it is possible to obtain the relationship between the parameter relating to the sensible temperature and the correction amount. Of course, such a relationship can be analytically set depending on the type of parameter.
[0010]
Note that the parameter deviation can be defined as a deviation from a predetermined reference value. When parameters are repeatedly detected at predetermined intervals, a deviation from a previously detected value may be used.
[0011]
According to the above-mentioned sanitary washing device, even when the parameter relating to the perceived temperature fluctuates variously, washing water having a substantially constant perceived temperature is spouted by the above-described action. Therefore, it is possible to perform the local cleaning with a cleaning feeling expected when the user sets the temperature of the cleaning water. As a result, the washing can be performed comfortably, and it is not necessary to readjust the temperature of the washing water after the start of the washing, so that the complexity of using the sanitary washing device can be eliminated.
[0012]
Specifically, there are various parameters shown below as parameters relating to the sensible temperature. Further, according to each case, the relationship between the variation of the parameter and the correction amount can be set as follows.
For example,
The parameter is a room temperature in which the sanitary washing device is installed,
The relationship stored in the correction amount storage means may be such that the deviation and the correction amount are monotonically increasing.
[0013]
It is a well-known fact that the perceived temperature changes depending on the temperature in the room where the cleaning is performed. Therefore, the temperature in the room where the sanitary washing device is installed can be used as a parameter related to the perceived temperature. It is a well-known fact that, even if the washing water has a constant temperature, it generally feels hotter at lower temperatures and feels warmer at higher temperatures. In the above aspect, the correction amount is set so that the temperature of the washing water increases as the temperature selected as the parameter increases, and conversely, the temperature of the washing water decreases as the temperature decreases. As a result, the sensible temperature can be maintained substantially constant with respect to the fluctuation of the temperature.
[0014]
In the “monotonic increase” in the above-described embodiment, the correction amount does not necessarily need to be continuously increased with respect to a change in the parameter, and may include a part that becomes constant. It also includes the case where the correction amount has an upper limit and a lower limit. Hereinafter, the terms monotonically increasing and monotonically decreasing are used in a broad sense including these aspects.
[0015]
Further, the parameter is a humidity in a room where the sanitary washing device is installed,
The relationship stored in the correction amount storage means may be such that the deviation and the correction amount are monotonically decreasing.
[0016]
The perceived temperature is also related to the evaporation of the wash water. This is because the cleaning water ejected to the local area takes away local heat in the form of heat of vaporization when evaporating. Therefore, even if the washing water has a constant temperature, the perceived temperature decreases when the washing water is in an environment where the washing water is easy to evaporate, and increases in the environment where the washing water is difficult to evaporate. A parameter that greatly affects the ease with which the washing water evaporates is humidity. In the above aspect, from such a viewpoint, the humidity in the room where the sanitary washing device is installed is used as a parameter related to the perceived temperature. In the above aspect, the correction amount is set so that the temperature of the washing water decreases as the humidity selected as a parameter increases, and conversely, the temperature of the washing water increases as the humidity decreases. As a result, the sensible temperature can be maintained substantially constant with respect to the deviation in humidity.
[0017]
The parameter relating to the sensible temperature may be a parameter representing a mode of jetting the washing water.
The sanitary washing device may have a function of changing the washing power and the washing feeling by variously switching the jetting mode of the washing water. In many cases, the sensible temperature is different when the washing water is jetted in different ways. Therefore, parameters related to the cleaning function of the sanitary washing device can be used as parameters related to the sensible temperature.
[0018]
As such parameters, the following various parameters can be specifically used according to the function of the sanitary washing device. Further, according to each case, the relationship between the variation of the parameter and the correction amount can be set as follows.
For example, when the sanitary washing device has adjusting means for adjusting the flow rate of the washing water,
The parameter is a flow rate of the washing water,
The relationship stored in the correction amount storage means may be such that the deviation and the correction amount are monotonically decreasing.
[0019]
It is an empirically known fact that even if the washing water has a constant temperature, the sensible temperature changes if the flow rate changes. For example, if the flow rate of the wash water increases, the amount of heat transferred from the wash water to the local area per unit time increases, so that the temperature of the wash water feels high. Conversely, if the flow rate decreases, the temperature of the washing water will feel low. In the above aspect, from such a viewpoint, the flow rate of the washing water is used as a parameter related to the perceived temperature. In the above aspect, the correction amount is set so that the temperature of the cleaning water decreases as the flow rate selected as a parameter increases, and conversely, the temperature of the cleaning water increases as the flow rate decreases. As a result, the sensible temperature can be maintained substantially constant with respect to the fluctuation of the flow rate.
[0020]
As a parameter related to the cleaning function, when the sanitary washing device mixes bubbles in the wash water and has mixing means capable of adjusting the mixing amount,
The parameter is the amount of air bubbles mixed,
The relationship stored in the correction amount storage means may be such that the deviation and the correction amount are monotonically increasing.
[0021]
In recent years, there is a sanitary washing device using washing water mixed with air bubbles. In such a sanitary washing device, the amount of air bubbles can be changed. If air bubbles are mixed in, a part of the area where the cleaning water hits the local part has a part where the air bubble hits. Therefore, the area that the washing water itself hits is reduced as compared with the case where no bubbles are mixed. Since the sensible temperature is proportional to the area that the washing water is applied to, the sensible temperature decreases if air bubbles are mixed. As the amount of air bubbles increases, the sensible temperature further decreases. In addition, when air bubbles are mixed in after heating, an effect based on the configuration of the apparatus that the temperature of the entire cleaning water is reduced by air may appear. In the above aspect, from such a viewpoint, the mixed amount of bubbles is used as a parameter related to the sensible temperature. In the above aspect, the correction amount is set so that the temperature of the cleaning water increases as the mixing amount selected as a parameter increases, and conversely, the temperature of the cleaning water decreases as the mixing amount decreases. As a result, the sensible temperature can be maintained substantially constant with respect to the fluctuation of the mixing amount.
[0022]
In a sanitary washing device capable of mixing air bubbles, while mixing air bubbles into the washing water, when having mixing means capable of adjusting the diameter of the air bubbles,
The parameter is the diameter of the bubble,
The relationship stored in the correction amount storage means may be such that the deviation and the correction amount are monotonically increasing.
[0023]
According to the same principle that the perceived temperature of the washing water changes depending on the amount of bubbles, the perceived temperature also changes depending on the diameter of the bubbles. If the diameter of the bubble is large, the area where the washing water hits the local part is small, so that the perceived temperature is low. The smaller the bubble diameter, the higher the perceived temperature. In the above aspect, from such a viewpoint, the diameter of the bubble is used as a parameter related to the perceived temperature. In the above aspect, the correction amount is set so that the temperature of the washing water increases as the diameter of the bubble selected as a parameter increases, and conversely, the temperature of the cleaning water decreases as the diameter of the bubble decreases. As a result, the sensible temperature can be maintained substantially constant with respect to the fluctuation of the bubble diameter.
[0024]
As a parameter related to the cleaning function, when the sanitary cleaning device has a means capable of adjusting the area of the cleaning area,
The parameter is the area of the cleaning area,
The relationship stored in the correction amount storage means may be such that the deviation and the correction amount are monotonically increasing.
[0025]
Some sanitary cleaning devices allow a wide range of cleaning by moving the nozzle during cleaning. In such a sanitary washing device, when focusing on a certain part, the washing water is applied again at a predetermined time interval after the application of the washing water according to the movement cycle of the nozzle. During this time, a part of the washing water evaporates and receives heat from the local part in the form of heat of vaporization. If the area of the cleaning area is increased, the moving range of the nozzle is widened, and the time interval for applying the cleaning water is widened, so that the cleaning water is easily evaporated. Therefore, the larger the cleaning area, the lower the perceived temperature. In the above aspect, from such a viewpoint, the cleaning area is used as a parameter related to the sensible temperature. In the above aspect, the correction amount is set such that the temperature of the cleaning water increases as the cleaning area selected as a parameter increases, and the temperature of the cleaning water decreases as the cleaning area decreases. As a result, the sensible temperature can be maintained substantially constant with respect to the fluctuation of the cleaning region.
[0026]
This aspect is applicable not only when the cleaning area can be changed by moving the nozzle, but also when the cleaning area can be changed by changing the area of the cleaning water jet. The cleaning water spouted from the small ejection port concentrates on a relatively narrow portion of the human body, and heat is transmitted from the cleaning water to the narrow portion. In this case, the perceived temperature increases. On the other hand, the washing water ejected from the large ejection port reaches a relatively wide portion, and heat is transmitted from the washing water by being averaged over the wide portion. In this case, the perceived temperature decreases. Thus, even in a sanitary washing device in which the washing area can be changed by changing the area of the ejection port, the temperature of the washing water is increased as the washing area is increased, and the temperature of the washing water is decreased as the washing area is reduced. If the correction amount is set so as to perform, the sensible temperature can be maintained substantially constant with respect to the fluctuation of the cleaning region.
[0027]
As a parameter related to the washing function, when the sanitary washing device has a means capable of adjusting the flight distance from the spout to the human body part,
The parameter is the flight distance,
The relationship stored in the correction amount storage means may be such that the deviation and the correction amount are monotonically increasing.
[0028]
Some sanitary washing devices can change the distance until the jetted washing water hits a human body part. For example, in a sanitary washing device in which the angle of the nozzle can be changed, changing the angle of the nozzle results in a change in the flight distance of the washing water. The cleaning water is jetted into the air, so that the temperature of the cleaning water is reduced by contact with the air. As the flight distance of the washing water increases, the temperature tends to decrease. In the above aspect, from such a viewpoint, the flight distance of the washing water is used as a parameter related to the sensible temperature. In the above aspect, the correction amount is set such that the longer the flight distance selected as a parameter, the higher the temperature of the cleaning water, and conversely, the shorter the flight distance, the lower the temperature of the cleaning water. As a result, the sensible temperature can be maintained substantially constant with respect to the variation of the flight distance. Of course, it goes without saying that parameters equivalent to the flight distance of the washing water, such as the nozzle angle described above, can be similarly applied.
[0029]
As the parameter relating to the sensible temperature, in addition to the various parameters described above, for example,
The parameter is a body temperature of a user of the sanitary washing device,
The relationship stored in the correction amount storage means may be such that the deviation and the correction amount are monotonically increasing.
[0030]
It is an empirically known fact that even if the temperature of the washing water is constant, if the body temperature of the user changes, the perceived temperature changes. For example, when the body temperature is high, the sensible temperature is low. When the body temperature is low, the perceived temperature increases. In the above aspect, from such a viewpoint, the body temperature of the user is used as a parameter related to the sensible temperature. In the above aspect, the correction amount is set such that the temperature of the washing water increases as the body temperature selected as a parameter increases, and conversely, the temperature of the washing water decreases as the flow rate decreases. As a result, the sensible temperature can be maintained substantially constant with respect to the fluctuation of the body temperature of the user.
[0031]
Although the body temperature of the user can be the body temperature of any part, it is desirable to use the local body temperature to be cleaned. The deviation of the body temperature may be obtained based on the average human body temperature, or may be obtained based on the body temperature after the user can individually register the body temperature corresponding to normal fever.
[0032]
In the sanitary washing device of the present invention,
When the temperature of the washing water reflecting the correction amount becomes higher than a predetermined upper limit temperature, it is preferable to include a suppression unit that suppresses the temperature of the washing water to the upper limit temperature or less. .
[0033]
This can prevent the corrected cleaning water temperature from exceeding the predetermined upper limit temperature. As a result, it is possible to prevent the power consumption of the sanitary washing device from being extremely increased in order to raise the temperature of the washing water.
[0034]
BEST MODE FOR CARRYING OUT THE INVENTION
(1) Device configuration:
Next, embodiments of the present invention will be described based on examples. FIG. 1 is a block diagram showing a schematic internal configuration of a sanitary washing device 10 as an embodiment of the present invention. The sanitary washing device 10 is attached to the toilet body 14, and is a device for squirting water supplied from a general water pipe to a local part of a human body to wash the local part of the human body.
[0035]
The sanitary washing device 10 is assembled in a casing 16 fixed to the toilet body 14. The water absorption pipe 12 is formed so as to be connectable to a water pipe, and serves as a supply path of cleaning water from the water pipe to the sanitary washing device 10. The sanitary washing device 10 is connected by a pipe in the order of the pump 20, the suction head 30, the heat exchanger 40, the flow control valve 50, and the nozzle 70 from the water absorption pipe 12 side. The cleaning water supplied from the water absorption pipe 12 passes through each component of the sanitary cleaning device 10 in this order, and is then ejected from the nozzle 70. The components can be arranged in various orders from the upstream in addition to the order described above.
[0036]
The pump 20 adjusts the cleaning water supplied from the water absorption pipe 12 to a pressure suitable for cleaning. The pump 20 adjusts the flow rate of the washing water by adjusting the pressure of the washing water. When the pump 20 is turned on, the cleaning water is ejected from the nozzle 70. The pressure of the washing water can be adjusted by the user as described later.
[0037]
The suction head 30 is a part that performs a function of mixing bubbles into the cleaning water. In the present embodiment, bubbles can be mixed into the cleaning water at a predetermined ratio by sending air pressurized by the air pump 32 connected to the suction head 30. The principle of mixing bubbles will be described with reference to FIG. FIG. 2 is an enlarged view of a cross section of the suction head 30. The washing water flows from the left side to the right side in the figure. The suction head 30 has a configuration in which an air chamber 35 is provided inside a housing 34 and a cylindrical bubble dispersion member 36 is fixed. The flow path diameter through which the washing water flows is about 1.5 to 3.0 mm. The housing 34 is provided with an air introduction pipe 37 for sending air pressurized by the air pump 32 into the air chamber 35.
[0038]
The foam dispersion 36 is formed of a porous body having a large number of openings. The pores formed in the porous body are fine pores such that water does not leak to the outside at the pressure of the washing water passing through the inside, and air can be sent from the outside to the inside by a pressure difference between the inside and the outside.
[0039]
The cell dispersion 36 is formed by heating and molding substantially spherical particles of ultrahigh molecular weight polyethylene. When the substantially spherical particles are heat-molded, independent pores in which voids are divided by the particles can be formed on the surface of the cell dispersion 36. In order to fill the particles with substantially uniform particles, the openings are arranged in a regular pattern in a lattice. The regularly arranged openings have an advantage that generated bubbles can be suppressed from uniting. Since the particles are fused by heat molding, there is also an advantage that the particles are excellent in strength against water pressure and air pressure.
[0040]
Ultrahigh molecular weight polyethylene has the advantage that the surface properties can be easily controlled during molding by sufficiently controlling the heating temperature and melting at a temperature slightly above the melting point of the resin. In addition, there is an advantage that it has physical properties suitable for being applied to a part of the flow path of washing water, such as being chemically stable and having almost no water absorption.
[0041]
Although the average particle diameter of the particles is 50 μm to 300 μm, the pore diameter can be controlled by controlling the particle diameter of the material. Therefore, the bubble diameter of generated bubbles is determined by the average particle diameter of the material. When the particles having an average particle diameter of 50 μm to 300 μm are used, pores for obtaining a bubble diameter of 100 μm to 1000 μm are formed. To increase the cell diameter, the particle diameter of the material may be increased, and to decrease the cell diameter, the particle diameter of the material may be decreased.
[0042]
The cell dispersion 36 can be formed of various other materials. For example, a material obtained by weaving substantially spherical particles of an acrylic resin or a fiber material such as nylon into a substantially lattice shape may be used. Further, a metal such as bronze or stainless steel, glass, or the like can also be used. Instead of using the heat-meltable powder, a material having continuous pores formed using phase change glass, a ceramic material, or the like may be used.
[0043]
When the air pressurized by the air pump 32 is sent from the air introduction pipe 37 to the air chamber 35, the air is sent from the opening of the bubble dispersing element 36 into the pipe, and expands at each opening. When the air inflates to a predetermined size, the air is cut off by the shearing force received from the washing water flowing in the pipe and becomes bubbles, which are mixed into the washing water. In the present embodiment, the diameter of the independent opening of the cell dispersion 36 is set so that the diameter of the formed cells is about 100 to 1000 μm. The air pump 32 only needs to be able to perform a steady operation with a pumping capacity of about 50,000 to 100,000 Pa, and various types such as a rolling pump, a vane pump, a rotary pump, and a linear pump can be employed.
[0044]
The suction head 30 of the present embodiment can change the amount of air bubbles mixed into the cleaning water by changing the pressure by the air pump 32. Also, by changing the flow rate of the washing water together with the pressure, the diameter of the bubbles in the washing water can be changed.
[0045]
The heat exchanger 40 is a so-called instantaneous water heater. The cleaning water is directly heated by the heater 42 and supplied to the nozzle 70. In this embodiment, a ceramic heater is used as the heater 42. The heat exchanger 40 has the ability to heat the wash water to about 40 degrees Celsius according to the setting of the user.
[0046]
FIG. 3 is an explanatory diagram showing the internal structure of the heat exchanger 40. 3 is a sectional view from the side of the heat exchanger 40, and the right side of FIG. 3 is a sectional view from the front. The heat exchanger 40 is formed such that a heater 42 is supported inside a housing 44 by a plurality of separators 46. The cleaning water flows on both sides of the heater 42 as shown on the left side of FIG. The separators 46 are arranged in a zigzag as shown on the right side of FIG. The cleaning water is branched by the separator 46, and flows while being stirred. The separator 46 improves the heat transfer efficiency from the heater 42 to the cleaning water by such an effect.
[0047]
The structure of the nozzle 70 will be described. FIG. 4 is a sectional view showing the internal structure of the nozzle 70. Two cleaning water channels having a circular cross section are formed inside the nozzle 70. The small-diameter flow path is the buttocks washing water channel 72 that serves as the flow path of the washing water for washing the buttocks. The large-diameter flow path is a bidet cleaning water passage 74 that serves as a flow path of cleaning water for bidet cleaning. In the present embodiment, the diameter of the buttocks cleaning water channel 72 was about 1.9 mm, and the diameter of the bidet cleaning water channel 74 was about 2.5 mm. In addition, both flow paths are about 95 mm, and are set so that the pressure loss in the buttocks cleaning water channel 72 and the pressure loss in the bidet cleaning water channel 74 are substantially equal. Since the buttocks washing channel 72 has a smaller diameter and a larger pressure loss per unit length, the channel length is slightly shorter than the bidet washing channel 74. The tip of the nozzle 70 is provided with a tail washing water jet 73 connected to a tail washing water channel 72 and a bidet washing water jet 75 connected to a bidet washing water channel 74. The buttocks washing water spout 73 has one spout. The bidet cleaning water spout 75 has two large and small spouts, and the washing water is spouted from both spouts simultaneously.
[0048]
In the present embodiment, the diameters of the buttocks washing channel 72 and the bidet washing channel 74 are changed in order to obtain different washing feelings. In the present embodiment, the diameter of the buttocks cleaning water channel 72 is smaller than the diameter of the bidet cleaning water channel 74. Therefore, the flow rate of the washing water in the buttocks washing channel 72 is faster than the flow rate of the washing water in the bidet washing channel 74. The time from when air bubbles are mixed into the washing water to when it is ejected is shorter in the butt washing than in the bidet washing. In general, since the diameter of bubbles is known to increase in correlation with the elapsed time after mixing, in the present embodiment, the washing water used for the ass washing is better than the washing water used for the bidet washing. The diameter of the bubbles becomes smaller. The smaller the bubble diameter, the harder the cleaning feeling. As described above, due to the difference in the bubble diameter and the ejection speed, the washing feeling between the buttocks washing and the bidet washing is different, and in this embodiment, the buttocks washing gives a harder washing feeling than the bidet washing. Can be.
[0049]
At the root of the nozzle 70, a switching mechanism for switching the supply destination of the cleaning water to the buttocks cleaning water channel 72 and the bidet cleaning water channel 74 is provided. Further, a nozzle drive motor 60 for driving the nozzle 70 forward and backward is provided. The nozzle drive motor 60 causes the nozzle 70 to advance from the standby position of the casing 16 to the buttocks cleaning position or the bidet cleaning position further in front thereof, or to retreat from both the cleaning positions to the standby position. The state of each movement is shown by a broken line in FIG.
[0050]
The switching mechanism switches the supply destination of the cleaning water in conjunction with the movement of the nozzle 70. FIG. 5 is an explanatory diagram showing a mechanism for switching the supply destination of the cleaning water and its function. As shown in the drawing, the switching mechanism includes a support 76 slidably supported by the nozzle body 71 via a spring 78 and a shielding block 79 fixed to the casing 16. In the support 76, a flow channel 77 through which the washing water that has passed through the heat exchanger 40 flows is formed. When the nozzle 70 is at the standby position (the position indicated by the broken line in FIG. 5A), the shielding block 79 and the support 76 do not interfere. Even when the nozzle 70 moves from left to right in FIG. 5A and comes to the buttocks washing position, the shielding block 79 and the support 76 do not interfere with each other. In these states, the support 76 is positioned above by receiving the urging force of the spring 78, and the flow path 77 of the support 76 and the buttocks washing water channel 72 face each other. Therefore, the washing water passes through the buttocks washing water channel 72 in the nozzle 70 and is jetted from the buttocks washing water jetting port 73.
[0051]
When the nozzle 70 advances to the bidet cleaning position, the support 76 contacts the shielding block 79. As a result, as shown in FIG. 5B, the support 76 is pushed down by the shielding block 79, and the flow channel 77 of the support 76 and the bidet washing water channel 74 face each other. Therefore, the washing water passes through the bidet washing water passage 74 in the nozzle 70 and is jetted from the bidet washing water jet port 75. When the nozzle 70 returns from the bidet cleaning position to the standby position, the support 76 returns to the initial position above by the urging force of the spring 78.
[0052]
Each of the above operations is controlled by the control device 100 shown in FIG. The control device 100 is a microcomputer including a CPU, a RAM, and a ROM therein, and controls the operation of each component of the sanitary washing device 10 according to various control programs stored in the ROM. Various sensors are connected to the control device 100 in order to perform this control. For example, a seating sensor 102 for detecting that the user is seated, a temperature sensor 106 for detecting the temperature of the washing water, and a light receiving unit 104 for inputting an infrared signal from the remote controller 200 are exemplified. The seating sensor 102 of the present embodiment detects the capacitance of a heater provided to heat the toilet seat 15 and detects seating based on a change between when the seat is seated and when it is not seated. In addition, various sensors can be applied as the seating sensor 102, such as a sensor that detects the pressure acting between the toilet body 14 and the toilet seat at the time of sitting. In addition, a body temperature sensor 101, a room temperature sensor 103, and a humidity sensor 105 are connected to execute the control of the washing water temperature described later. The body temperature sensor 101 is provided on the toilet seat 15 and detects a user's body temperature. The room temperature sensor 103 is provided in the toilet body 14 and detects the temperature around the toilet. The humidity sensor 105 is also provided on the toilet body 14 and detects humidity near the toilet.
[0053]
The room temperature sensor 103 and the humidity sensor 105 may be provided in, for example, the remote controller 200 to detect the room temperature and the humidity in the room where the sanitary washing device is installed. In addition, the room temperature sensor 103 may directly detect the temperature, or may indirectly detect the temperature via electric power required for heating the toilet seat 15 or the temperature of the washing water at the time of non-washing. In such a case, the already provided sensor can be used also as the room temperature sensor 103.
[0054]
The remote controller 200 is a device that converts a user's intention into an infrared signal and outputs the infrared signal. FIG. 6 shows an outline of the remote controller 200. As shown in the figure, the remote controller 200 includes a button group for instructing an operation, an operation unit for setting an operation, and an operation on / off button 202 for turning on / off the entire sanitary washing device. ing. Buttons for instructing the operation include a bottom cleaning button 206 for starting local cleaning, a bidet cleaning button 208, a drying button 210 for starting blowing hot air, a stop button 204, and a bottom cleaning. A massage setting button 212 for setting a jet of washing water with a strong or weak change in water force, a massage setting button 214 for setting a jet of wash water with a strong or weak change in water force during bidet washing, and a nozzle 70 are shaken. There is a move setting button 216 for setting the activated local cleaning. When the move setting button 216 is operated, the cleaning is performed while the nozzle 70 swings, so that the cleaning area is slightly widened. The operation unit for setting the operation includes the water discharge temperature setting buttons 224H and 224L for adjusting the temperature of the washing water, the water force setting buttons 226H and 226L for setting the strength of the water, that is, the water force setting buttons 226H and 226L, and the front-back position of the nozzle 70 There are nozzle position adjusting buttons 228F and 228B for adjustment, a deodorizing button 218 for setting a deodorizing state, a toilet seat temperature adjusting knob 220 for setting a toilet seat temperature, and an indoor heating button 222 for setting on / off of indoor heating.
[0055]
In the present embodiment, when the water force setting buttons 226H and 226L for setting the strength of the water force are adjusted, the amount of air bubbles mixed and the bubble diameter change simultaneously with the water force. Generally, when a strong washing power and a hard washing feeling are desired to be obtained, a strong water force is set. When the amount of air bubbles increases, the same effect as apparently reducing the cross-sectional area of the pipe through which the washing water flows appears, and since the flow rate of the washing water increases, a strong washing power and a hard washing feeling can be obtained. . In addition, there is also an effect of improving detergency by popping bubbles. When the diameter of the bubble is small, the frequency at which the bubble pops is high, so that the stimulation is strong and a strong detergency and a hard feeling of cleaning are obtained. In the present embodiment, these effects are comprehensively taken into consideration, and when the water force is set to be strong, the mixing amount of bubbles is increased and the diameter of the bubbles is reduced, so that the water force is set to be weak. In this case, the amount of air bubbles is reduced and the diameter of the air bubbles is increased.
[0056]
In this embodiment, when the nozzle position adjustment buttons 228F and 228B for adjusting the position of the nozzle 70 in the front-rear direction are adjusted, the angle of the nozzle 70 is changed together with the nozzle position. This is because the washing water is jetted to the local area at an appropriate angle. The angle of the nozzle 70 is set so as to be shallower as the position of the nozzle 70 is set forward. In accordance with the angle of the nozzle 70, the flight distance from when the washing water is jetted to when it hits a local part also changes. The operation results and setting results of these buttons are displayed on the display unit 230 by a lamp or a liquid crystal.
[0057]
The state of control by the control device 100 will be described by taking a normal cleaning sequence as an example. FIG. 7 is a time chart showing a sequence when the buttocks cleaning is performed. When the seating sensor detects that the user is seated on the toilet seat (time t1), the control device 100 starts the air pump 32 to perform the residual water treatment. By sending air into the nozzle 70, the cleaning water remaining in the nozzle 70 is expelled. At this point, the nozzle 70 is stored in the casing 16.
[0058]
When the user operates the bottom cleaning button 206 of the remote controller 200 (time t2), the control device 100 detects this signal by the light receiving unit 104 and starts pre-cleaning. That is, the pump 20 and the air pump 32 are driven to eject the cleaning water from the nozzle 70 at a predetermined pressure. The pre-cleaning is a process for cleaning dirt, germs, and the like attached to the inside and the tip of the nozzle 70. At this point, the nozzle 70 is still stored in the casing 16. When the pre-cleaning for a predetermined time is completed (time t3), control device 100 temporarily stops driving of pump 20 and air pump 32. Then, the nozzle driving motor 60 is controlled to move the nozzle 70 to a predetermined butt washing position. During this time, the flow control valve 50 is temporarily returned to the origin, and the opening is set to an opening corresponding to the water force set by the water force setting buttons 226H and 226L of the remote controller 200.
[0059]
When the nozzle 70 comes to the bottom cleaning position (time t4), the control device 100 drives the pump 20 and the air pump 32 to perform the main cleaning. Wash water mixed with air bubbles at a predetermined ratio is jetted from the tail wash water jet 73 of the nozzle 70 to clean the buttocks. During this time, the control device 100 controls the current of the heater 42 according to parameters such as the flow rate of the cleaning water so as to maintain the temperature of the cleaning water at the temperature set by the user. When the user operates the move setting button 216, the control device 100 controls the nozzle driving motor 60 in response to the operation to swing the nozzle. When the user operates the stop button 204 to instruct the end of the cleaning (time t5), the control device 100 stops driving the pump 20 and the air pump 32. Thereafter, the nozzle drive motor 60 is controlled to move the nozzle 70 back to the standby position. During this time, the flow regulating valve 50 is once returned to the origin, and then set to the fully open position again.
[0060]
When the nozzle 70 returns to the standby position in the casing 16 (time t6), the control device 100 starts post-washing. By driving the pump 20 and the air pump 32, the washing water mixed with bubbles at a predetermined ratio is jetted from the nozzle 70. The post-cleaning is cleaning for removing dirt attached to the nozzle 70 by the main cleaning. After a lapse of the predetermined time, the control device 100 stops driving the pump 20 and the air pump 32 and ends the post-washing. Thereafter, when the seating sensor 102 detects that the user has left the toilet seat (time t7), the control device 100 drives the air pump 32 to send air to the nozzle 70. Thereby, the cleaning water remaining in the nozzle 70 is discharged. The purpose of discharging the washing water is to prevent germs from growing and the apparatus from corroding. This is also to prevent the cleaning water from entering the inside of the independent opening of the cell dispersion 36. In some cases, after the main cleaning, an operation of blowing out warm air to dry a local portion may be included according to a user's instruction.
[0061]
(2) Wash water temperature control
Next, a description will be given of the temperature control processing of the cleaning water in the present embodiment. FIG. 8 is a flowchart of the cleaning water temperature control routine of the present embodiment. This process is a process that the CPU of the control device 100 repeatedly executes together with other control processes during cleaning.
[0062]
When this process is started, the CPU first inputs the designated temperature Tset (step S10). Tset allows the user to Spout This is the temperature set by the temperature setting buttons 224H and 224L. Next, a parameter relating to the sensible temperature is detected (step S20). In this embodiment, eight types of parameters are detected as parameters relating to the sensible temperature. There are eight types: room temperature, humidity, washing water amount, washing range, nozzle angle, bubble mixing ratio, bubble diameter, and user's body temperature. The room temperature and the humidity are detected by the room temperature sensor 103 and the humidity sensor 105. The room temperature and the humidity near the sanitary washing device 10, respectively. The washing water amount, the bubble mixing ratio, and the bubble diameter can be detected based on the water force set by the user using the water force setting buttons 226H and 226L. In the present embodiment, as described above, the washing water amount, the bubble mixing ratio, and the bubble diameter simultaneously change according to the operation of the water pressure setting buttons 226H and 226L. The control device 100 stores, as a table, a correspondence relationship between the water force set in the ROM, the cleaning water amount, the bubble mixing ratio, and the bubble diameter. In step S20, the set value of the water force is replaced with the cleaning water amount, the bubble mixing ratio, and the bubble diameter by referring to this table. The cleaning range is detected based on whether the move setting button 216 has been operated. The nozzle angle can be detected based on the settings of the nozzle position setting buttons 228F and 228B. The body temperature of the user can be detected by the body temperature sensor 101.
[0063]
It should be noted that more parameters than the above eight types can be used as the parameters relating to the sensible temperature, and some of the above parameters may be omitted. Further, the cleaning water amount, the bubble mixing ratio, and the bubble diameter may be replaced with one parameter such as water force. It goes without saying that the method of detecting each parameter is not necessarily limited to the method described above.
[0064]
The CPU sets a correction coefficient kt for the temperature of the washing water based on the parameters thus detected (step S30). The correction coefficient kt is set based on a table in which the relationship between the parameter and the correction amount is stored in advance. FIG. 9 shows the relationship between the room temperature and the correction amount as an example. FIG. 9 is a table that gives a correction coefficient of the temperature of the washing water to the deviation between the detected room temperature and the reference room temperature. The curve C1 in the figure gives the relationship between the room temperature deviation and the correction coefficient. The table shown in FIG. 9 is stored in the ROM in the control device 100.
[0065]
As shown in the figure, the correction coefficient is set to increase as the deviation of the room temperature becomes positive, that is, as the room temperature becomes higher than the reference temperature. On the contrary, when the deviation of the room temperature is negative, that is, when the room temperature is lower than the reference temperature, the correction coefficient becomes smaller. The reference room temperature is a preset value, and any value can be selected. In this example, the average temperature for one year was selected as the reference temperature. When the deviation has a value of 0, the correction coefficient has a value of 1. For example, when a room temperature higher than the reference room temperature by Δt ° C. is detected, the correction coefficient can be determined to be k1 larger than the value 1 by referring to the curve C1 in FIG.
[0066]
The correction coefficient shown in FIG. 9 can be set based on a so-called sensory test. For example, the deviation of the room temperature from the reference temperature is set to Δt ° C. The subject uses the sanitary washing device while varying the temperature of the washing water in such a room. Then, the subject selects a temperature at which the user feels the same temperature as used in the room at the reference temperature. Next, a similar test is performed by changing the room temperature deviation. By performing such a test on many subjects, the relationship between the room temperature deviation and the correction amount can be obtained.
[0067]
The result thus obtained is the curve C1 in FIG. It is a well-known fact that even when the temperature of the washing water is constant, the temperature of the washing water is felt to be lower as the room temperature is higher. Conversely, the lower the room temperature, the higher the temperature of the washing water is felt. Therefore, in order to keep the perceived temperature constant, it is necessary to raise the temperature of the washing water as the room temperature increases. Further, it is necessary to lower the temperature of the washing water as the room temperature is lower. In the present embodiment, it is set to be non-linear as indicated by a curve C1 in FIG. This is because a change in room temperature near the reference temperature did not significantly affect the perceived temperature. Of course, as shown by the broken line C2 in FIG. 9, the table may be such that the correction coefficient changes linearly with respect to the deviation. Also, the table may have an upper limit and a lower limit as shown by the broken line C2.
[0068]
In the present embodiment, a table is provided which gives a correction coefficient for the temperature of the washing water to each of the eight parameters described above. The table setting method is based on the same sensory test as described for room temperature. Some of the tables have a monotonically increasing relationship as shown in FIG. 9, while others have a monotonically decreasing relationship. FIG. 10 shows the relationship between the deviation of each parameter and the correction coefficient.
[0069]
As shown in the drawing, for example, for room temperature, the correction coefficient is set so that the washing water becomes hot if the deviation is positive, and the washing water is low if the deviation is negative. . That is, the relationship is monotonically increasing as shown in FIG. The reason is as described above.
[0070]
For humidity, the correction coefficient is set such that the washing water becomes low temperature when the deviation is positive, that is, when the deviation is positive, and the cleaning water is high when the deviation is negative. . The perceived temperature is also related to the evaporation of the wash water. This is because the cleaning water ejected to the local area takes away local heat in the form of heat of vaporization when evaporating. Therefore, even in the case of washing water having a constant temperature, the perceived temperature is low in an environment where the humidity is low and the washing water is easily evaporated, and the perceived temperature is high in an environment where the humidity is high and the evaporation is difficult. Become. Therefore, in order to keep the perceived temperature constant, it is appropriate to perform the above-described temperature correction on the deviation of the humidity. Although the humidity reference state can be set arbitrarily, in this embodiment, the average humidity for one year is used as the reference state.
[0071]
For the amount of washing water, a correction coefficient is set such that the washing water has a monotonously decreasing relationship, that is, the washing water has a low temperature when the deviation is positive, and has a high temperature when the deviation is negative. I have. If the flow rate of the washing water increases, the amount of heat transferred from the washing water to the local area per unit time increases, so that the temperature of the washing water feels high. Conversely, if the flow rate decreases, the temperature of the washing water will feel low. Therefore, in order to make the perceived temperature constant, it is appropriate to perform the above-described temperature correction on the deviation of the amount of washing water. Although the reference state of the washing water amount can be arbitrarily set, in the present embodiment, the water amount when the setting of the water force is set to the middle is set as the reference state.
[0072]
For the cleaning range, a correction coefficient is set such that the cleaning water has a high temperature when the deviation is positive, that is, the cleaning water has a low temperature when the deviation is negative. I have. When the cleaning area is widened by the move, focusing on a certain part, the cleaning water is again applied to the part after a predetermined time interval from the application of the cleaning water according to the movement cycle of the nozzle 70. During this time, a part of the washing water evaporates and receives heat from a local part in the form of heat of vaporization, so that the perceived temperature decreases. Therefore, in order to make the perceived temperature constant, it is appropriate to perform the above-described temperature correction on the deviation of the cleaning region.
[0073]
In the present embodiment, only an operation as to whether or not to perform a move is possible, and it is not possible to set up a cleaning range by the move. In this embodiment, the correction coefficient for the cleaning range can be selectively set to two values in accordance with the on / off state of the move. Of course, if the cleaning range can be adjusted, a table as shown in FIG. 9 may be prepared.
[0074]
For the nozzle angle, a correction coefficient is set such that the washing water becomes hot when the deviation is positive, that is, when the deviation is positive, the washing water is low when the deviation is negative. I have. As described above, when the nozzle angle is adjusted, the flying distance until the jetted washing water hits a local part changes. The cleaning water is jetted into the air, so that the temperature of the cleaning water is reduced by contact with the air. As the flight distance of the washing water increases, the temperature tends to decrease. Therefore, in order to make the perceived temperature constant, it is appropriate to perform the above-described temperature correction on the deviation of the cleaning region. Although the reference state of the nozzle angle can be set arbitrarily, in the present embodiment, the nozzle angle when the nozzle position is set to the middle is set as the reference state.
[0075]
The correction coefficient is set so that the bubble mixing ratio is monotonically increasing, that is, if the deviation is positive, the cleaning water becomes high temperature, and if the deviation is negative, the cleaning water becomes low temperature. ing. If air bubbles are mixed in, a part of the area where the cleaning water hits the local part has a part where the air bubble hits. Therefore, the area that the washing water itself hits is reduced as compared with the case where no bubbles are mixed. Since the sensible temperature is proportional to the area that the washing water is applied to, the sensible temperature decreases if air bubbles are mixed. Therefore, in order to make the perceived temperature constant, it is appropriate to perform the above-described temperature correction on the deviation of the cleaning region. Although the reference state of the air bubble mixing ratio can be arbitrarily set, in the present embodiment, the air bubble mixing ratio when the water force is set to the middle is set as the reference state.
[0076]
For the bubble diameter, the correction coefficient is set such that the washing water becomes high temperature when the deviation is positive, that is, when the deviation is positive, and when the deviation is negative, the cleaning water is low. I have. If the diameter of the bubble is large, the area where the washing water hits the local part is small, so that the perceived temperature is low. The smaller the bubble diameter, the higher the perceived temperature. Therefore, in order to make the perceived temperature constant, it is appropriate to perform the above-described temperature correction on the deviation of the cleaning region. Although the reference state of the bubble diameter can be set arbitrarily, in the present embodiment, the bubble state when the water force is set to the middle is set as the reference state.
[0077]
For the body temperature, a correction coefficient is set such that the washing water becomes high temperature when the deviation is positive, that is, when the deviation is positive, and the water is low when the deviation is negative. . As is well known, the higher the body temperature, the lower the perceived temperature. When the body temperature is low, the perceived temperature increases. Therefore, in order to make the perceived temperature constant, it is appropriate to perform the above-described temperature correction on the deviation of the cleaning region. Although the reference state of the body temperature can be set arbitrarily, in this embodiment, the average body temperature of an adult at normal temperature is used as the reference state.
[0078]
The CPU sets the temperature correction coefficients k1 to k8 based on the above eight parameters. A temperature correction coefficient kt is set by multiplying all of these correction coefficients. That is, “kt = k1, k2, k3, k4, k5, k6, k7, k8”. When all the parameters have a deviation of 0, that is, when they match the reference state, the correction coefficient has a value of 1.0. When a deviation occurs in each parameter, the deviation is reflected on the correction coefficient kt according to the influence on the sensory temperature.
[0079]
When the correction coefficient kt is set in this way, the CPU sets the target temperature T of the washing water (step S40). The target temperature T is set by multiplying the specified temperature Tset by the correction coefficient kt. If the correction coefficient kt> 1.0, a temperature higher than the specified temperature Tset is set as the target temperature T, and if kt <1.0, a temperature lower than the specified temperature Tset is set as the target temperature T. Is done.
[0080]
Next, the CPU determines whether or not the target temperature T is higher than a predetermined upper limit temperature Tlim (step S50). The upper limit temperature Tlim is the upper limit temperature of the washing water set within a range that does not cause burns. If the target temperature T is higher than the predetermined upper limit temperature Tlim, the target temperature T is corrected to the upper limit temperature Tlim to avoid danger (step S60). If the target temperature T is equal to or lower than the upper limit temperature Tlim, it is determined that there is no danger, and this processing is skipped.
[0081]
Through the above processing, the target temperature T of the washing water was set. The CPU controls the energization of the heater 42 so that the washing water at such a temperature is jetted (step S70). Control of energization of the heater 42 is performed by feedback control. That is, energization of the heater 42 is controlled based on a deviation between the temperature of the washing water detected by the temperature sensor 106 and the target temperature T. Such control is a well-known technique and will not be described in detail.
[0082]
A method for using the sanitary washing device described above will be described. When the user uses the sanitary washing device 10 of this embodiment, the user operates the water discharge temperature setting buttons 224H, 224L and other buttons of the remote controller 200 while performing washing so that a desired washing feeling can be obtained. Adjust the flushing condition of the washing water. The temperature of the washing water set in this way is Tset (° C.).
[0083]
Such adjustment need not be performed under the condition that the above-described eight parameters are in the reference state. When the temperature of the washing water is set to Tset (° C.), the washing water is jetted at the temperature corrected by the control processing of FIG. 8 according to the deviation of each parameter from the reference state. Even if the temperature of the washing water displayed on the display unit 230 is Tset (° C.), if each parameter is different from the reference state, the washing water having a temperature different from Tset (° C.) is jetted. In other words, in the sanitary washing device 10 of the present embodiment, the temperature of the wash water displayed on the display unit 230 represents the sensible temperature or the temperature of the wash water when each parameter is in the reference state.
[0084]
If the water pressure is changed after setting the temperature of the washing water during the above adjustment, the temperature of the washing water is controlled in accordance with the change, and the sensible temperature is maintained. Therefore, a desired washing feeling can be easily set.
[0085]
When the user uses the sanitary washing device 10 at another occasion after completing the washing, the temperature of the washing water may be set to the temperature Tset (° C.) used in the previous use. Even if the condition for using the sanitary washing device 10, for example, the room temperature is different from the time when the sanitary washing device 10 was previously used, the control process shown in FIG. The sensible temperature is kept constant even if the settings such as the water force are changed during the washing.
[0086]
According to the sanitary washing device described above, even when the conditions when using the sanitary washing device are variously changed, the washing water having a constant sensible temperature is jetted. Therefore, it is easy to obtain a washing feeling according to the user's preference, and comfortable washing can be performed. In addition, it is not necessary to reset the temperature of the washing water every time washing is performed in order to obtain a desired washing feeling, so that the complexity of using the sanitary washing device can be eliminated.
[0087]
The sanitary washing device described above can be realized by various modifications. In the present embodiment, the relationship between the parameter contributing to the sensory temperature and the correction coefficient is set for each parameter. On the other hand, the table for providing the correction coefficient may be a two-dimensional table or more, and the correction coefficient may be given when a plurality of parameters are specified. FIG. 11 shows an example of such a table. FIG. 11 shows a table that gives a correction coefficient k ′ corresponding to room temperature and humidity among the parameters that contribute to the perceived temperature. For example, even when the relationship between the room temperature and the correction coefficient changes according to the humidity, that is, even when the interaction between the parameters affects the correction coefficient, it is possible to set a fixed correction coefficient. Of course, not only a two-dimensional table but also a higher-dimensional table can be used.
[0088]
In the present embodiment, a table for giving a temperature correction coefficient to a deviation of a parameter contributing to the perceived temperature is used. On the other hand, it is also possible to use a table that gives the amount of temperature correction (° C.). The parameter deviation may be a time deviation, for example, a deviation from the last use, instead of a deviation from a predetermined reference state.
[0089]
In this embodiment, the body temperature of the user is detected as a parameter. The reference value of the body temperature is the average body temperature of an adult at normal temperature. On the other hand, the user may individually register the body temperature during normal fever, and the deviation of the body temperature may be obtained based on the registered body temperature.
[0090]
In this embodiment, the temperature of the washing water is heated using the instantaneous heat exchanger 40. On the other hand, the heating means of the cleaning water can be configured in various modes. FIG. 12 shows a configuration example of the heating means. FIG. 12A schematically shows the heating means of this embodiment. The washing water flows as indicated by the arrow in the figure. That is, the inflowing washing water is heated to the target temperature by the instantaneous heat exchanger and flows out.
[0091]
FIG. 12B shows a modification. In this example, a hot-water storage type heat exchanger 40a is provided in addition to the instantaneous type heat exchanger 40b. The washing water is heated to a predetermined temperature, which is a hot water storage type heat exchanger 40a, then reheated to a target temperature by an instantaneous type heat exchanger 40b and flows out. The hot water storage type heat exchanger 40a has an advantage that the temperature can be controlled relatively stably. If the heating means is configured in this manner, the temperature of the washing water can be controlled stably. There is also an advantage that the capacity of the instantaneous heat exchanger 40b can be suppressed relatively low.
[0092]
FIG. 12C shows another embodiment. In this aspect, a hot water storage type heat exchanger 40c is provided. The washing water is heated by the hot water storage type heat exchanger 40c and flows out. This heat exchanger 40c heats the washing water to a temperature equal to or higher than the upper limit temperature that can be actually used. The heated cleaning water is mixed with the cleaning water supplied from another flow path 40d in the mixing section mx and flows out. The washing water supplied from the flow path 40d is unheated washing water. The mixing section mx controls the mixing ratio of the heated cleaning water and the non-heated cleaning water to flow out the cleaning water at the target temperature. Since the hot water storage type 40c can stably control the temperature, if the heating means is configured in the mode shown in FIG. 12C, the temperature of the jetted washing water can be stably controlled.
[0093]
Although various embodiments of the present invention have been described above, the present invention can be implemented in various other modes without departing from the gist of the present invention. For example, in the above-described embodiment, the case where the present invention is applied to a toilet bowl has been described as an example. In addition, it can be used for various washing machines such as a shower and a hand washing machine. Further, in this embodiment, a sanitary washing apparatus using cleaning water mixed with air bubbles has been described as an example, but it goes without saying that the present invention can also be used in a sanitary washing apparatus in which air bubbles are not mixed into cleaning water.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram showing a schematic configuration of a sanitary washing device 10.
FIG. 2 is an explanatory diagram showing a schematic configuration of a suction unit 30.
FIG. 3 is an explanatory diagram showing a schematic configuration of a heat exchanger 40.
FIG. 4 is an explanatory diagram showing a schematic configuration of a nozzle 70.
FIG. 5 is an explanatory diagram showing a state of switching a flow path of a nozzle 70.
FIG. 6 is an explanatory diagram showing a schematic configuration of a remote controller 200.
FIG. 7 is a time chart showing a cleaning sequence of the sanitary cleaning device 10.
FIG. 8 is a flowchart of a cleaning water temperature control routine.
FIG. 9 is a graph showing a relationship between a room temperature deviation and a temperature correction coefficient.
FIG. 10 is an explanatory diagram showing a deviation of a parameter and a tendency of a temperature correction coefficient.
FIG. 11 is a graph showing a relationship between a room temperature deviation and a humidity deviation and a temperature correction coefficient.
FIG. 12 is an explanatory view showing a modification of the heating means.
[Explanation of symbols]
10. Sanitary washing device
12 ... water absorption piping
14. The toilet body
15 ... toilet seat
16 ... Casing
20 ... Pump
30 ... Suction head
32 ... Air pump
34 ... housing
35 ... Air chamber
36 ... Bubble dispersion
37… Air introduction pipe
40, 40a ... heat exchanger
42, 42a ... heater
44… Housing
46 ... Separator
50 ... Flow control valve
60 ... Nozzle drive motor
70 ... Nozzle
71 ... Nozzle body
72… Ass washing waterway
73 ... Butt washing water spout
74 ... bidet washing waterway
75 ... bidet washing water spout
76 ... Support
77 ... Flow path
78 ... Spring
79… Shielding block
100 ... Control device
101: Body temperature sensor
102 ... Seat sensor
103… Room temperature sensor
104 light receiving unit
105 ... humidity sensor
106 ... temperature sensor
200 ... Remote controller
202: Operation on / off button
204: Stop button
206… Ass washing button
208 ... bidet cleaning button
210 ... Dry button
212… Massage setting button
214… Massage setting button
216… Move setting button
218… Deodorization button
220: Toilet seat temperature adjustment knob
222 ... indoor heating button
224H, 224L ... water discharge temperature setting button
226H, 226L ... water setting button
228F, 228B ... Nozzle position adjustment button
230 ... Display section

Claims (12)

A sanitary washing device for washing a human body part by squirting washing water supplied from the outside from a spout,
Detecting means for repeatedly detecting a parameter contributing to the perceived temperature when the washing water at a constant temperature is jetted to the local part during the washing ,
Temperature control means for repeatedly changing the temperature of the washing water according to the deviation of the parameter ,
Having a correction amount storage means for storing a relationship between the deviation of the parameter and the correction amount of the temperature of the washing water required to keep the sensible temperature constant,
The sanitary washing device is a means for controlling the temperature of the washing water by a correction amount obtained by referring to the correction amount storage means. The sanitary washing device according to claim 1,
  The correction amount storage means stores the relationship for a plurality of types of parameters,
  The sanitary washing device, wherein the temperature control means controls the change in the temperature by synergistically reflecting the correction amounts corresponding to the plurality of types of parameters. The sanitary washing device according to claim 2,
The parameter is a room temperature in which the sanitary washing device is installed,
The relationship stored in the correction amount storage means is a sanitary washing device in which the deviation and the correction amount are monotonically increasing. The sanitary washing device according to claim 2,
The parameter is a humidity in a room where the sanitary washing device is installed,
The relation stored in the correction amount storage means is such that the deviation and the correction amount are monotonically decreasing. The sanitary washing device according to claim 2, wherein the parameter is a parameter representing a mode of jetting the washing water. The sanitary washing device according to claim 5,
It has adjusting means for adjusting the flow rate of the washing water,
The parameter is a flow rate of the washing water,
The relation stored in the correction amount storage means is such that the deviation and the correction amount are monotonically decreasing. The sanitary washing device according to claim 5,
While mixing bubbles in the washing water, it has mixing means that can adjust the mixing amount,
The parameter is the amount of air bubbles mixed,
The relationship stored in the correction amount storage means is a sanitary washing device in which the deviation and the correction amount are monotonically increasing. The sanitary washing device according to claim 5,
While mixing bubbles in the washing water, it has mixing means capable of adjusting the diameter of the bubbles,
The parameter is the diameter of the bubble,
The relationship stored in the correction amount storage means is a sanitary washing device in which the deviation and the correction amount are monotonically increasing. The sanitary washing device according to claim 5,
It has means that can adjust the area of the washing area,
The parameter is the area of the cleaning area,
The relationship stored in the correction amount storage means is a sanitary washing device in which the deviation and the correction amount are monotonically increasing. The sanitary washing device according to claim 5,
It has means that can adjust the flight distance from the spout to the local body,
The parameter is the flight distance,
The relationship stored in the correction amount storage means is a sanitary washing device in which the deviation and the correction amount are monotonically increasing. The sanitary washing device according to claim 2,
The parameter is a body temperature of a user of the sanitary washing device,
The relationship stored in the correction amount storage means is a sanitary washing device in which the deviation and the correction amount are monotonically increasing. The sanitary washing device according to claim 1,
A sanitary washing apparatus comprising: a suppression unit that suppresses the temperature of the washing water to be equal to or lower than the upper limit temperature when the temperature of the washing water reflecting the correction amount becomes higher than a predetermined upper limit temperature.

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