JP2002294831A - Sanitary washing equipment - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To accurately detect whether or not hot water just before being jetted to a human body part in a hot water storage tank has a high temperature within an allowable range, and to prevent inadvertent adhesion of water. Provided is a sanitary washing device capable of eliminating the risk of electric leakage and reducing costs by reducing parts. A water discharge section is disposed at one upper end side of a hot water storage tank, and a high temperature detecting means is connected to a hot water storage tank.
1 is disposed on the upper end side of one side so as to face the water discharge section 23 at a substantially right angle, and the high temperature detecting means 80 is connected to the water discharge section 2.
3 in the vicinity. On the outer wall surface of the hot water storage tank 21, a drainer cover 29 for preventing adhering water from entering the high temperature detecting means 80 is integrally formed. The high temperature detecting means 80 is attached to the outer wall of the hot water storage tank 21 via a metal bracket 81. Here, the metal bracket 81 is used as a ground terminal of the high temperature detecting means 80.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sanitary washing device for washing a part of a human body by jetting washing water from a washing nozzle.

[0002]

2. Description of the Related Art Conventionally, as this type of sanitary washing device,
For example, a device equipped with a heat exchange unit as shown in FIGS. 28 to 30 is known. The heat exchange unit mainly includes a hot water storage tank 1 having a predetermined capacity, and the hot water storage tank 1 is configured by attaching an upper lid 3 to a tank body 2 having an open upper surface, and assembling various related components to the upper lid 3.

A heater 4 is built in the hot water storage tank 1, and water supplied from the outside is heated by the heater 4 and stored as hot water at a desired temperature. At the time of use, hot water in hot water storage tank 1 is directly used for cleaning nozzle (not shown).
It is designed to squirt more.

[0004]

However, with respect to the above-mentioned conventional sanitary washing apparatus, the following points to be improved have been found by the researches conducted by the applicants in recent development of new products. Was done. First, a vacuum breaker 5 for supplying hot water to the cleaning nozzle side is provided on the upper lid 3.
And a bimetal switch 6 for high temperature detection is arranged on the side of the switch. However, these are arranged on substantially the same plane, so that interference between the mounting brackets is avoided in FIG. As shown, they are arranged relatively far from each other.

The bimetal switch 6 detects a high temperature equal to or higher than a predetermined value, thereby preventing high-temperature water higher than an allowable temperature from being sent from the vacuum breaker 5 to the cleaning nozzle. However, as described above, since the bimetal switch 6 is disposed relatively far from the vacuum breaker 5 in a plan view, it is possible to accurately detect whether or not the hot water immediately before being jetted to the human body has an allowable temperature. There was a possibility that it could not be done.

The upper cover 3 having the bimetal switch 6
The inner wall forms a ceiling surface inside the hot water storage tank 1, and the air mixed in the hot water storage tank 1 is often stored on the inner wall of the upper lid 3. Due to the presence of such air, the bimetal switch 6 may not sufficiently come into contact with hot water, and there is a possibility that accurate detection of even higher temperatures may not be possible.

Further, if water is unnecessarily attached to a portion of the bimetal switch 6 exposed to the outside of the upper lid 3, there is a risk of electric leakage. There has been a long-awaited need for measures to prevent intrusion of dew condensation and the like.

The present invention has been made in view of the above-mentioned problems of the prior art, and it is intended to determine whether or not hot water immediately before being jetted to a human body in a hot water storage tank has a high temperature within an allowable range. It is an object of the present invention to provide a sanitary washing apparatus which can accurately detect the occurrence of electric current, can eliminate the risk of electric leakage due to inadvertent adhesion of water, and can reduce costs by reducing parts.

[0009]

Means for Solving the Problems The gist of the present invention for achieving the above-mentioned object lies in the following inventions. [1] A hot water storage tank (21) for storing water supplied from the outside in a sanitary washing device (10) for jetting washing water from a washing nozzle (12) to wash a human body part, and a hot water storage tank (21) And a high-temperature detecting means (80) capable of detecting when the temperature of the hot water in the hot water in the hot water in the hot water storage tank (21) is higher than a predetermined value. A sanitary washing device (10), which is arranged near a part (23).

[2] The sanitary washing device according to [1], wherein the high temperature detecting means (80) is arranged at a predetermined distance below an upper end surface in the hot water storage tank (21). 10).

[3] The water discharge section (23) is disposed at one upper end of the hot water storage tank (21), and the high temperature detecting means (80) is provided at an upper end of one side of the hot water storage tank (21). The sanitary washing device (10) according to [1] or [2], wherein the sanitary washing device (1) or (2) is disposed so as to face the water discharge part (23) at a right angle.

[4] The high-temperature detecting means (80) is attached to an outer wall of the hot water storage tank (21) in a state of being exposed inside the hot water storage tank (21), and is connected to the hot water storage tank (2).
[1] The method according to [1], [2] or [3], wherein a water preventing means for preventing adhering water from entering the high temperature detecting means (80) is provided on the outer wall surface of 1). Sanitary washing equipment (10).

[5] The drainage cover (2) is formed integrally with the outer wall of the hot water storage tank (21) so as to surround a mounting portion of the high temperature detection means (80).
The sanitary washing device (10) according to [4], comprising: 9).

[6] The high temperature detecting means (80) is attached to the outer wall of the hot water storage tank (21) via a metal bracket (81) in a state of being exposed inside the hot water storage tank (21). The sanitary washing device (10) according to [1], [2], [3], [4] or [5], wherein the bracket (81) is used as a ground terminal of the high temperature detecting means (80). .

[7] In a sanitary washing device (10) installed on a toilet bowl for washing hot water or water from a washing nozzle (12) to wash a local part of a human body, a hot water storage for warming and storing water supplied from outside. Tank (21) and the hot water storage tank (2
Tubes (34, 34a) for guiding hot water or water discharged from the water discharge section (23) of 1) to the washing nozzle (12).
And a relay elbow (90) interposed in the middle of the tubes (34, 34a), and at least a part of the relay elbow (90) is integrally formed on an outer wall of the hot water storage tank (21). A sanitary washing device (10), characterized in that:

Next, the operation based on the above-mentioned solution will be described. According to the sanitary washing device (10) according to the present invention, since the high temperature detecting means (80) is disposed near the hot water or water spouting section (23) in the hot water storage tank (21), immediately before being ejected to the human body local part. It is possible to accurately detect whether the hot water is at a high temperature equal to or higher than the allowable temperature. When the high temperature detecting means (80) detects a high temperature equal to or higher than the allowable temperature, for example, the injection from the cleaning nozzle (12) is controlled to be stopped.

Further, by disposing the high temperature detecting means (80) at a predetermined distance below the upper end surface in the hot water storage tank (21), the hot water storage tank (21) is provided.
Even if air accumulates in the vicinity of the upper end surface of the inside, there is no possibility that the high temperature detecting means (80) comes into contact with air, and the highest hot water temperature in the uppermost layer can be accurately detected.

Here, specifically, for example, the water discharging section (2)
3) is disposed at one end of the upper portion of the hot water storage tank (21), while the high temperature detecting means (80) is connected to the hot water storage tank (21).
If the upper end of one side is disposed so as to face the water discharge section (23) at a substantially right angle, it is possible to bring them extremely close to each other, and at the same time, the high temperature detecting means (80)
Can be easily arranged at a predetermined distance below the upper end surface in the hot water storage tank (21).

Further, the high-temperature detecting means (80) is exposed to the inside of the hot water storage tank (21) in a state where it is exposed to the inside.
If it is attached to the outer wall of 1) and provided on the outer wall surface of the hot water storage tank (21) with a water-retaining preventing means for preventing the adhering water from entering the high-temperature detecting means (80), the high-temperature detecting means ( 80) It is possible to prevent water from inadvertently adhering to the portion exposed outside the tank, and it is possible to enhance safety by taking measures against electric leakage.

The water-repelling prevention means includes, for example, a drainage cover (29) integrally formed on the outer wall of the hot-water storage tank (21) so as to surround a mounting portion of the high-temperature detection means (80).
In this case, it is possible to very easily perform integral molding.

The high-temperature detecting means (80) is attached to the outer wall of the hot water storage tank (21) via a metal bracket (81) in a state of being exposed inside the hot water storage tank (21). If (81) is used as the ground terminal of the high temperature detecting means (80), it is not necessary to prepare a separate component for the ground, and the cost can be reduced by reducing the number of components.

Still further, a relay elbow (90) is provided in the middle of the tubes (34, 34a) for guiding the hot water or water discharged from the water discharge part (23) of the hot water storage tank (21) to the cleaning nozzle (12). In such a case, at least a part of the relay elbow (90) is replaced with the hot water storage tank (2).
If it is integrally formed on the outer wall of 1), the cost can be further reduced by reducing the number of parts. The tube (34,
Since the relay elbow (90) is interposed in the middle of 34a),
It is possible to prevent the tubes (34, 34a) from being easily broken when the cleaning nozzle (12) moves forward and backward.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. 1 to 27 show an embodiment of the present invention. Although not shown, the sanitary washing device 10 according to the present embodiment is installed via a base plate behind the toilet seat of the toilet body, warms low-temperature water supplied from the outside, stores it as hot water, and uses the hot water as a cleaning nozzle. It is used by injecting it into the human body from 12.

As shown in FIGS. 1 and 2, the sanitary washing device 10 is provided with a case cover 11 (only a part of the bottom side is shown in the figure) as an exterior. A heat exchange unit 20 having a hot water storage tank 21 as a main part is housed on one side of the case cover 11 with the cleaning nozzle 12 substantially at the center, and the hot air unit 13 and the deodorization unit 1 on the other side.
4, the valve unit 15, the controller 100,
Other related devices are stored compactly.

The cleaning nozzle 12 is supported by a dedicated driving mechanism so as to be able to protrude forward and backward between a standby position and two cleaning positions for buttocks or bidets. Further, the warm air unit 13 is configured by incorporating a heater, a blower, and the like in a case in which a warm air duct is integrally formed. The deodorizing unit 14 includes a blower, a deodorizer, and the like for exhausting air in a predetermined direction.

The valve unit 15 comprises various valves such as a main solenoid valve 111 for adjusting the pressure of water supplied from the water supply unit 22 into the hot water storage tank 21 described later.
The controller 100 is mainly configured by a CPU of a microcomputer, and controls each water amount, each temperature, and the like according to a predetermined program. At one end of the case cover 11, a main operation unit 101 and an auxiliary operation unit 102 including a control panel on which various operation switches are mounted are also integrally provided.

As shown in FIG. 3, a check valve 110a for preventing backflow, a strainer 110b for removing foreign matters, and a pressure reducing valve 110c for reducing the pressure of the water supply to a constant value are provided in the tap water supply passage 110 in order from the upstream side. , And a main solenoid valve 111 is provided. A direct-acting solenoid valve 112 is provided in a bypass passage 112 branched from the tap water supply passage 110 before the main solenoid valve 111.
a and a vacuum breaker 112b.

The bypass 112 is for supplying water for cleaning the body to the cleaning nozzle 12. Further, the direct-acting solenoid valve 112a and the vacuum breaker 11
2b and the main solenoid valve 1
11 are connected to each other through a pilot channel 113.

Main solenoid valve 11 in tap water supply channel 110
Downstream from 1, the relief valve 114 suppresses the pressure rise in the downstream-side heat exchange unit 20 which forms the basis of the present invention, the vacuum breaking valve 115 as a safety device, the flow regulating valve 116 for regulating the flow rate, cleaning it A switching valve 117 for switching the flow path in the nozzle 12 is provided in order.

The heat exchange unit 20 which forms the basis of the present invention
Is constructed by assembling heat exchange related components inside and outside the hot water storage tank 21. As shown in FIG.
1 is a combination of a lower case 21a and an upper case 21b. The lower case 21a forms the bottom of the hot water storage tank 21 and is formed in a tray shape, and the upper case 21b is formed in a case shape having a predetermined capacity.

As described above, the hot water storage tank 21 is designed to fit in the space on one side of the cleaning nozzle 12 which is located substantially at the center in the case cover 11, and specifically, the hot water consumption (injection for one minute). In order to correspond to 900 cc / min which is the optimum value of the (capable capacity), it is preferable to have a capacity of about 1200 cc in consideration of the pushing-up efficiency (about 80%). Here, the push-up efficiency is the efficiency of the hot water storage tank indicating how much hot water at a predetermined temperature or higher can be supplied with respect to the hot water storage capacity of the hot water storage tank.

As shown in FIGS. 10, 6, and 7, the lower case 21a and the upper case 21b are jointly fastened to each other at predetermined intervals along the edges of the opening where they are joined to each other. Screw portion 211 is formed. Here, the intervals between the screwing portions 211 are set to substantially equal optimal intervals to avoid local stress concentration. The lower case 21a and the upper case 21b bulge out between the screwing portions 211 on both sides and the rear portion thereof to form a peripheral wall.

As shown in FIGS. 16 and 18, the space S between two sets of adjacent screwing portions 211 located on the long side of the lower case 21a among the screwing portions 211 is formed. The peripheral wall is formed on a flat surface. The peripheral wall may be formed on a flat surface at only one central portion on the long side.

A flange portion 211a projecting with a predetermined width is integrally formed between the screw fixing portions 211 along the opening edge of the lower case 21a. Similarly, a flange portion 211b projecting with a predetermined width is integrally formed between the screw fixing portions 211 along the opening edge of the upper case 21b.

As shown in FIG. 16, the water adhering to the outer wall surface of the hot water storage tank 21 is guided to the flange portion 211a of the lower case 21a, and the water is discharged to the front toward the inside of the toilet body. A passage 212 is recessed.
Drain passage 212 is formed in a substantially U-shape to span the both side portions and a rear side, except the front portion of the flange portion 211a.

Drain holes 213 for dropping water into the toilet body are formed at both ends located in front of the drain passage 212. The drainage passage 212 is slightly inclined forward and downward so that the drainage hole 213 is located downward when the hot water storage tank 21 is housed in the sanitary washing device 10 and attached to the toilet body. It has become. Note that a toy is formed on the case cover 11 located below the drain hole 213, and water that has fallen from the drain hole 213 is
It is designed to be discharged into the toilet bowl.

When assembling the lower case 21a and the upper case 21b, after assembling related components such as a rectifying unit 40 and a heater 50, which will be described later, to the lower case 21a side, a packing 210 is provided between the opening edges (see FIG. 10). ) With the screwing portion 21 of the lower case 21a interposed.
The screws are fastened together from 1 toward the screw fixing portion 211 of the upper case 21b.

As shown in FIG. 13, the case cover 1
When the hot water storage tank 21 is housed, the hook portion 11a integrally engages with a predetermined portion of the flange portion 211b as an engaging portion for positioning or temporarily fixing the hot water storage tank 21 on the inner wall side. It has been set.

In the present embodiment, the hot water storage tank 21 is horizontally moved from the front to the rear with respect to the case cover 11, and the flange portion 211b behind the upper case 21b is provided below the hook portion 11a. The positioning and the temporary fixing are performed simultaneously by engaging, and the screws are screwed on the front side of the hot water storage tank 21. As shown in FIGS. 4 and 6, a pair of screw fastening portions 214 for fixing to the case cover 11 side is provided at both front ends of the flange portion 211 a in the lower case 21 a.

As shown in FIG. 5 and FIG. 20, wirings or pipes extending from related parts are singly or bundled along the front part of each opening edge for joining the lower case 21a and the upper case 21b to each other. A latching means that can be latched in a state is provided. The hooking means comprises hooks 215 and 216 projecting vertically from each other along the front part of each opening edge.

The hooks 215 and 216 are arranged along the front of each opening edge in the horizontal direction of the hot water storage tank 21. The upper and lower hooks 215 and 216 oppose each other at a predetermined interval as shown in FIG. 5, but may of course also oppose each other so as to overlap vertically. In the present embodiment, harnesses 219, which are related components of the heat exchange unit 20, and are extended from a heater 50 and a temperature detecting means 60, which will be described later, are provided between the upper and lower hooks 215 and 216, and It is hooked so as to extend in the lateral direction on the lower side of the front part.

As shown in FIGS. 9 and 20, on the side of the flange portion 211a of the lower case 21a, there is provided a hooking means for sandwiching the overflow tube 35 extending downward from the vacuum breaker 30. I have. Here, the hooking means comprises a holding piece 217 projecting downward at predetermined intervals from the flange portion 211a.

The hot water storage tank 21 described above constitutes a main part of the heat exchange unit 20, and the mounting portions of the related components to be installed inside and outside of the hot water storage tank 21 are all installed in the toilet body. The lower case 21
a and the upper case 21b. Hereinafter, each related component will be described in order.

As shown in FIGS. 4 and 11, the hot water storage tank 2
A water supply unit 22 for taking in low-temperature water is provided at the bottom of the unit 1, and a water discharge unit 23 for discharging hot water is provided at the top. In the hot water storage tank 21, the low-temperature water taken in from the water supply unit 22 spreads over the entire horizontal direction along the bottom of the hot water storage tank 21, and the low-temperature water on the lower layer of the hot-water tank 21 gradually pushes up the hot water on the upper layer. A rectifying structure is provided to enable this.

The hot water storage tank 21 has a water supply direction in which low-temperature water is taken in from the water supply section 22 and a low-temperature water is not taken in from the water supply section 22 due to its internal shape and the rectifying structure shown in each figure. The direction of natural convection at the time of water stop is set to be substantially the same.

FIGS. 22 and 23 conceptually show the water supply direction and the natural convection direction in the entire hot water storage tank 21. FIG. 22A shows an approximate convection path at the time of stopping water when the hot water storage tank 21 is viewed from the front side by an arrow, and FIG. 22B shows a case where the hot water storage tank 21 is viewed from the right side. The approximate convection path at the time of water stoppage is indicated by an arrow. In addition, as shown in FIG. 12, the cross-sectional area in the vertical direction of the hot water storage tank 21 (upper case 21b) is formed in a shape that decreases from the bottom toward the top.

FIG. 23 (a) shows the approximate direction of water supply and the convection path at the time of inflow when the hot water storage tank 21 is viewed from the front side, and FIG. 23 (b) shows the hot water storage tank 2
Arrows indicate the approximate water supply direction and convection path at the time of inflow when 1 is viewed from the right side. Assuming that water flows in the boiling state, it is considered that the heater is energized when the boundary layer between the flowed water and the hot water in the hot water storage tank reaches the temperature detection position 60 or higher. FIG. 23 shows a case where the position of the detecting means is not more than 60.

The water supply section 22 includes a tap water supply passage 110
(See Fig. 3)
As shown in FIGS. 4, 10 and the like, the lower case 21a is connected to the front side of the lower case 21a. On the other hand, the water discharging section 23
Is an upper case 21b as shown in FIGS.
The vacuum breaker 30 is attached to the water discharge part 23.

FIG. 4, FIG. 6, FIG. 10, FIG. 11, and FIG.
As shown in FIG. 4, the vacuum breaker 30 includes a lid 30a, a valve body 30b disposed inside the lid 30a, and an O-ring 30 for sealing between the lid 30a and the water discharge part 23.
The main water discharge port 32 is provided beside the lid 30a, and the drainage wick 31 protruding above the lid 30a is provided eccentrically from the center to avoid the main water discharge port 32. An overflow water outlet (air intake) 33 is provided beside the drainage wick 31. By eccentrically providing the drainage core 31 in this manner, the overall shape can be made as small as possible. The main water outlet 32 is provided with the cleaning nozzle 12.
A warm water outflow tube 34 for supplying warm water to the water supply port is connected, and an overflow water discharge port (air intake port) 33 is connected to an overflow tube 35.

With the above configuration, the vacuum breaker 3
When the main solenoid valve 111 is opened, the valve body 30 b is lifted to close the flow path to the overflow water outlet 33, the hot water in the hot water storage tank 21 is supplied to the main water outlet 32, and
When the valve 11 is closed, the valve body 30b closes the water discharge part 23 by gravity, and connects the overflow water discharge port 33 and the main water discharge port 32 to introduce air downstream from the main water discharge port 32, so that the water flows into the pipe. The remaining residual water is discharged from the ejection port of the cleaning nozzle 12.

As shown in FIGS. 13 to 17, the rectifying structure comprises a rectifying unit 40 integrally formed in a box shape. The rectification unit 40 includes a first space 41 into which low-temperature water taken in from the water supply unit 22 is first introduced, and the first space 41.
There is provided a second space 42 adjacent to the space 41 and the current plate 43, and into which low-temperature water flows through a communication portion 44 formed in the current plate 43.

The rectifying unit 40 has a box shape having a space of a two-layer structure, and the first space 41 forms a lower layer for equalizing the dynamic pressure in the depth direction along the bottom of the hot water storage tank 21. The second space 42 is disposed above the first space 41 and forms an upper layer for uniformly dispersing water in the dead water area below the heater 50. As shown in FIG. 17, an inflow portion 45 is provided at one end of the first space 41 and communicates with the water supply portion 22 to reduce the dynamic pressure while bending the flow of the low-temperature water.

As shown in FIG. 13, one side in the longitudinal direction of the second space 42 is largely opened, and low-temperature water whose dynamic pressure is made substantially uniform through the (rectification portion 44) of the current plate 43 is supplied to the bottom of the tank. An opening 46 is formed to uniformly feed the wafer. As shown in FIG. 14, the ceiling plate 42a of the second space 42
Extends at a predetermined width along the longitudinal direction of the opening 46, and the low-temperature water released from the opening 46 is supplied to the hot water storage tank 2.
1 is set to be substantially horizontal or downward.

The rectifying unit 40 is attached by screwing a screwed portion 42b at one end of the ceiling plate 42a to a boss 24 projecting from the bottom surface of the lower case 21a, as shown in FIG. As shown, the inflow portion 45
Of the upper case 21b
Is locked to the inner edge (locking portion) 26 of the opening edge of the opening and pressed from above. As shown in FIGS. 14 and 15, the first space 41 is provided on the bottom surface of the lower case 21a.
The unit mounting portion 25 is provided so that the periphery of the bottom opening of the first space 41 is fitted to maintain the airtightness on the bottom surface side of the first space 41.

As shown in FIG. 10, a heater 50 for heating low-temperature water to make it hot water is provided at the bottom of the hot water storage tank 21.
Are arranged. The heater 50 is a so-called sheathed heater, but has a structure that does not have a mounting flange itself. The heater 50 is generally formed in a substantially U-shape in plan view, and is disposed in a state of being developed horizontally along the bottom of the hot water storage tank 21.

The heater 50 is supported in such a manner that both ends 51 are protruded outward from the outer wall of the hot water storage tank 21, and a connection portion disposed between the both ends 51 and inside the hot water storage tank 21 forms a connection portion 53. ing. The connecting portion 53 is formed longer than both end portions 51. In this embodiment,
Both ends are formed at about 6 cm and the connecting part is formed at 10 cm, and the radius between both ends 51 and the connecting part 53 is about 2 cm in radius,
It has a substantially U-shape (a straight portion at both ends is about 4 cm, and a straight portion at the connecting portion is about 6 cm). Such a heater 5
A value of 0 is preferably set to a watt density of 10 W / cm ² or less from the viewpoints that the optimum natural convection temperature can be diffused and the generation of boiling noise is suppressed.

As shown in FIG. 25 to FIG. 27, a slightly larger mounting portion having the same shape as the cross section of the end portion 51 is provided at the front portion of the lower case 21a so that the end portion 51 of the heater 50 can be easily penetrated. A hole 220 is opened. This mounting hole 220
The end 51 of the heater 50 is passed through the end
O-ring 221, resin backup ring 222, and metal taper ring 2
23 are externally fitted in order.

The O-ring 22 is attached to the end 51 of the heater 50.
Preliminary markings or the like indicating the positioning of 1 will be a guide when assembling. The backup ring 222 has a cross section L
The tapered ring 223 has a ring shape and is partially cut out, and the inner diameter is smaller than that of the heater 50.

As shown in FIG. 26, the mounting holes 220
The smallest detail 220a and O-ring storage part 2 in order from the tank inner wall
20b, a pressing member insertion portion 220c and a three-stage structure, and an O-ring 221
By pressing the distal end portion 56 of the holding member 55 into the holding member insertion portion 220c in a state where the O ring 221 is brought into contact, the small diameter portion of the backup ring 222 is fitted into the O-ring storage portion 220b, and the O-ring 221 is This prevents the O-ring from being dropped from the O-ring storage portion 220b due to water pressure.

The backup ring 2 is provided at the step between the O-ring storage portion 220b and the holding member insertion portion 220c.
The large diameter portion of 22 abuts against the taper ring 223, and the small diameter portion of the taper ring 223 is squeezed to strongly tighten the heater 50, so that the heater 50 and the taper ring 223 are fitted and integrated.

As shown in FIG. 27, a pressing member 55 is provided with a tab terminal 52 projecting coaxially from an end 51 of the heater 50.
Is provided with a fitting hole 57 that can be inserted in a fixed posture, and the fitting hole 57 is formed by inserting the tab terminal 52 with the holding member 55 lying down, and then rotating the holding member 55 by 90 degrees. The peripheral edge of the fitting hole 57 can be engaged with the base end side of the tab terminal 52.

The tab terminal 52 of the terminal 51 protruding from the holding member 55 is covered with a tube-shaped protective cap when the heater 50 is alone, and the mounting hole 2 is provided.
Care should be taken so that the tab terminal 52 does not break when the connector 20 is inserted. This protective cap is removed after the O-ring 221 is inserted. Further, a protective cap 58 is covered on the tab terminal 52 at the end portion 51 protruding from the pressing member 55. In this case, the protective cap 58 has a function as a connector connected to the tab terminal 52.

The space between both ends 51 of the heater 50 protruding from the outer wall of the hot water storage tank 21 is used as an arrangement space for other related parts. In the present embodiment, as shown in FIGS.
A drainage unit 200 for draining all the water in the hot water storage tank 21 during maintenance is provided between them.

As shown in FIG. 15, the drainage unit 200
A guide part 201 integrally formed with the lower case 21a;
It is composed of a rubber valve seat 202, a drain valve 204, and a pressing member 203 incorporated in the guide portion 201. The water draining section 200 performs a water draining operation by pressing a push rod integrally formed with the water drain valve body 204 with an operation rod (not shown). The drainage unit 200 is configured to be capable of draining water only when the entire sanitary washing device 10 is removed from the base plate on the toilet body side.

As shown in FIG. 10, a temperature detecting means 60 for detecting the temperature of hot water is provided in the hot water storage tank 21. Temperature sensing means 60 is a hot water temperature is made whether the range of the desired set temperature (e.g., 39-40 ° C.) from detectable thermistor, outputs a temperature signal to the controller 100. The controller 100
On / off control of the heater 50 is performed based on a temperature signal from the temperature detecting means 60.

In FIG. 12, the temperature detecting means 60 is provided with the heater 50 in the natural convection direction in the hot water storage tank 21.
It is located immediately downstream. That is, the heater 5
The warm water heated at 0 is set to circulate upward immediately through the temperature detecting means 60. The temperature detecting means 60 has a thin rod shape, and is disposed so as to extend in the horizontal direction in the hot water storage tank 21.

More specifically, as shown in FIGS. 4 to 6, the front wall of the upper case 21b is provided to be inclined (inclined portion 21).
c) Below the inclined portion 21c, there is provided a mounting portion 27 that is recessed inside the tank. The temperature detecting means 60 is fixed to the support bracket 61 in advance so as to protrude in the lateral direction. Then, the support bracket 61 is assembled to the mounting portion 27 from the lateral direction so that the temperature detecting means 60 extends in the lateral direction in the hot water storage tank 21. Since the overshoot of the temperature detecting means 60 does not appear, no heat pools in the hot water storage tank 21 and the boundary layer is not disturbed.

Further, an inclined surface 21d is provided on an upper portion of the inclined portion 21c of the upper case 21b. Thereby, a portion where the pressure density is sparse is formed below the right side of the hot water storage tank 21,
Natural convection is generated from this part. The inclined portion 21c and the inclined surface 21d are provided in accordance with the shape of the case cover 11. However, by devising the arrangement of the heater 50, the pushing-up efficiency of the hot water storage tank 21 (the amount of hot water that can be effectively used as washing water / the amount of hot water storage tank) Greatly contributes to the internal capacitance).

As shown in FIG. 12, a temperature fuse 70 is provided outside the hot water storage tank 21 to cut off a power supply circuit to the heater 50 when an overcurrent flows to the heater 50. The temperature fuse 70 is for preventing the heater 50 from being idled, and has a predetermined high temperature (for example,
(3 ° C).

As shown in FIG.
Is provided at the bottom of the hot water storage tank 21 so as to be located below the connecting portion 53 of the heater 50. More specifically, the thermal fuse 70 is provided at one end of the bottom surface forming the outer wall of the lower case 21a, and water adhering to the bottom surface enters the thermal fuse 70 around the mounting portion of the thermal fuse 70. Water-prevention means for preventing the occurrence of water is provided.

In this case, the means for preventing water from being wet is a thermal fuse 70.
Draining rib 20 protruding around the mounting portion of
7 The drain ribs 207 are integrally formed on the bottom surface of the lower case 21a so as to protrude in a flange shape along a rectangular contour of a mounting portion of the thermal fuse 70.

As shown in FIG. 7 and FIG.
At an upper end of one side portion, a high temperature detecting means 80 capable of detecting when the temperature of the hot water in the hot water storage tank 21 becomes higher than a predetermined value is provided. The high temperature detecting means 80 is composed of a bimetal switch that detects a high temperature equal to or higher than a predetermined value, and is for preventing high-temperature water having an allowable temperature or higher from being injected.

As shown in FIG. 11, the high temperature detecting means 80
Is disposed at the upper end of one side of the upper case 21b which is substantially perpendicular to the water discharge section 23 at the upper part of the upper case 21b.
And the high temperature detecting means 80 are extremely close to each other. The high temperature detecting means 80 is disposed on the upper side of the side of the upper case 21b, but is separated from the upper ceiling surface in the hot water storage tank 21 by a predetermined distance. Here, by providing the high temperature detecting means 80 close to the water discharge section 23, the responsiveness of the high temperature detection to the hot water just before being injected is improved, and the safety is improved by avoiding the high temperature.

More specifically, an opening 28 for mounting the high-temperature detecting means 80 is formed on the outer wall at the upper end of the side of the upper case 21b, and the high-temperature detecting means 80 is connected via a metal bracket 81 or the like. Thus, the hot water storage tank 21 is assembled from the lateral direction so as to be exposed to the inside. Here, the metal bracket 81 is used as it is as a ground terminal (earth) of the high temperature detecting means 80.

Around the mounting opening 28 in the upper case 21b, there is provided a means for preventing water adhering to the surface of the upper case 21b from entering the high temperature detecting means 80. Here, the water-repelling prevention means includes a drainage cover 29 integrally formed on the outer wall of the upper case 21b so as to surround the mounting opening 28 to which the high-temperature detecting means 80 is attached. As shown in FIG. 4 to FIG. 9, the drainage cover 29 is formed in a gutter shape that protrudes above the hot water storage tank 21 (upper case 21 b) and hangs down along a corner portion. To fall down along a certain path.

As shown in FIG.
A guide piece 29a as a hooking means capable of hooking the hot water outflow tube 34 and the overflow tube 35 extending from the vacuum breaker 30 along a corner of the outer wall of the hot water storage tank 21 in a bundled state.
Are provided integrally.

The hot water outflow tube 34 is connected to the guide piece 2
After being hooked on 9 a, it is connected to a relay elbow 90 on the side of the hot water storage tank 21. On the other hand, the overflow tube 35 is hooked on the guide piece 29a and extends downward along the corner of the hot water storage tank 21 as it is. A hook 218 for hanging the overflow tube 35 in the middle thereof is also integrally formed with the flange portion 211b.
Further, a pressing piece 217 for making the overflow tube 35 extend along the flange portion 211a is also integrally formed.

As shown in FIGS. 19 and 20, the relay elbow 90 is interposed in the middle of the hot water outflow tube 34 extending from the vacuum breaker 30. The distal end is connected, and the other end 92 is connected to the proximal end of the continuous hot water outflow tube 34 a forming the latter half of the hot water outflow tube 34. The continuous hot water outflow tube 34a has a play length that can correspond to the movable range of the cleaning nozzle 12, and the distal end thereof is connected to the base end side of the cleaning nozzle 12. Relay elbow 90
Thereby, the moving range of the hot water outflow tube 34 due to the movement of the cleaning nozzle 12 can be reduced as much as possible.
Therefore, a dead space can be reduced.

The relay elbow 90 is formed as an independent part in the present embodiment, and is attached later to a key point on the side of the hot water storage tank 21. However, all or at least a part of the relay elbow 90 is You may comprise so that it may be integrally molded with the outer wall of the tank 21. In such a case, the number of parts can be reduced.

As shown in FIGS. 10 and 11, a float switch 120 is provided above the hot water storage tank 21. The float switch 120 is for detecting the amount of hot water in the hot water storage tank 21 and includes a float 122 loosely fitted to the base 121 so as to be able to move up and down. It informs you that it is not full.

On the upper side of the upper case 21b, on the opposite side of the water discharge section 23, a mounting portion 205 for the float switch 120 is provided in a recessed manner.
0 is attached via a bracket 123. The float switch 120 is also connected to the controller 100 via a signal line.

As shown in FIGS. 4 to 6, the upper case 21
A gutter section 2 for discharging water leaked from the float switch 120 downward along the corner portion on the outer wall of the b.
06 is provided. The gutter portion 206 has an upper end communicating with the mounting portion 205 of the float switch 120 and is integrally formed on an outer wall so as to extend from the mounting portion 205 to a lower end along a corner portion.

At the lower end of the gutter 206, the flange 2
Drop hole 206a communicating with drainage passage 212 in 11a
(See FIG. 6). The water flowing down to the lower end of the gutter 206 is drained to the toilet body via the drain passage 212.

Further, a heat insulating material 130 shown in FIG. 21 is mounted on the outer wall of the upper case 21b in the hot water storage tank 21. The heat insulating material 130 is formed into a single sheet, and its entire shape is cut into a shape of a developed view that can widely cover the upper part and the side part of the upper case 21b.

The heat insulating material 130 is provided with the upper case 21b.
Notches are provided to avoid the related components disposed on the outer wall of the vehicle. More specifically, the heat insulating material 130 is provided with a notch 131 for avoiding the float switch 120 and its mounting portion 205 and a notch 132 for avoiding the vacuum breaker 30.

The heat insulating material 130 is provided with a notch 133 for avoiding the temperature detecting means 60 and its mounting portion 27 and a notch 134 for avoiding the relay elbow 90. Further, the heat insulating material 130 is also provided with a positioning side 135 to be stuck along the gutter 206. Note that the heat insulating material 130 is formed by cutting a general heat insulating material into the illustrated sheet shape having the above-described cutouts and the like, and can be attached to the outer wall of the upper case 21b with a double-sided tape or the like.

Next, the operation of the heat exchange unit 20, the hot water storage tank 21, and various related parts will be described. When assembling the heat exchange unit 20, the lower case 21 a and the upper case 2 of the hot water storage tank 21, which are main parts thereof,
Before joining to the lower case 1b, the water supply unit 22, the rectification unit 40, the heater 50, the water draining unit 200, and the like may be assembled in advance on the lower case 21a side.

When the rectifying unit 40 is assembled, FIG.
As shown in FIG. 5, the bottom opening of the first space 41 is positioned by being fitted into the unit mounting portion 25 at the bottom of the lower case 21a from above. Then, the screw portion 42b on one end side of the ceiling plate 42a may be screwed to the boss 24 on the bottom surface of the lower case 21a. As shown in FIG.
The holding protrusion 45a on one end side of the inflow portion 45 is the inner edge (locking portion) 2 of the opening edge of the upper case 21b to be attached later.
6 will be held down.

Here, the rectifying unit 40 can be integrally formed of synthetic resin. Due to the engaging relationship between the pressing projection 45a of the rectifying unit 40 and the inner edge 26 of the upper case 21b, substantially only one screw is provided. And can be easily assembled without increasing the cost.

Next, it is preferable to assemble the heater 50. Here, since the heater 50 has a structure without a mounting flange, an expensive flange is used like a conventional heater with a flange. Is unnecessary, and welding work of the flange is not required, so that the cost can be significantly reduced.

As shown in FIG. 15, the heater 50 is formed in a substantially U-shape.
It is supported so as to protrude outward from the front part of the hot water storage tank 1a, but is arranged in a state of being developed horizontally along the bottom of the hot water storage tank 21. At the front of the lower case 21a, a mounting hole 220 through which the end 51 of the heater 50 penetrates is formed.

A packing may be fitted to the end portion 51 of the heater 50 in advance, and the holding member 55 may be screwed in a state where the packing is pressed against the inner peripheral side of the mounting hole 220. Here, if the marking for positioning the packing is written on the end portion 51 of the heater 50 with a magic pen or the like, the positioning of the packing made of an O-ring or the like can be easily performed.

According to such a mounting structure of the heater 50, the number of parts is reduced as much as possible, and the heater 5 is easily mounted.
0 can be attached and detached, and maintenance and inspection can be performed quickly. Moreover, the sealing performance around the end 51 of the heater 50 can be improved.

In addition, since the flange of the heater 50 is omitted, the arrangement space of other components is not eroded by the flange as in the conventional case. Therefore, the space between both ends 51 of the heater 50 can be effectively used as a space for arranging other related components. In the present embodiment, the water draining section 200 is provided between the both end portions 51.

After assembling the water supply unit 22, the rectifying unit 40, the heater 50, and the like to the lower case 21a side, as shown in FIG.
Combine with b. Since the screw portions 211 formed along the opening edges of the cases 21a and 21b are arranged at substantially equal intervals, it is possible to prevent local stress concentration in the screw portions 211. it can.

Further, as shown in FIGS. 16 and 18, the space S between the two sets of adjacent screwing portions 211 located on the long side of the lower case 21a among the screwing portions 211 is formed. By forming the peripheral wall on a flat surface, it is possible to sufficiently disperse the stress particularly at the portion where the stress tends to be concentrated, and to increase the strength. In addition, by setting the position formed on the flat surface only on the long side, it is possible to minimize the decrease in the amount of hot water stored in the hot water storage tank 21, and it is possible to ensure a good balance between the amount of hot water stored and the strength.

Flanges 211a and 211b projecting with a predetermined width are formed integrally between the screwing portions 211, so that not only the stress can be dispersed but also the strength at each opening edge is improved. I have. The interval between the screwing portions 211 and the width of the flange portions 211a and 211b are designed to be optimal intervals from the viewpoint of stress distribution according to the specific shape and size of each opening edge.

When screwing, a packing 210 (see FIG. 10) is interposed between the opening edges.
From upper part 2 of screwing part 211 of lower case 21a
A screw is inserted toward the side of the screwing portion 211 of FIG. Thus, the tray-shaped lower case 21a
By screwing from the side, a tool such as a screwdriver does not interfere with the outer wall of the upper case 21b, the assembling work can be performed efficiently, and the tank capacity may be reduced from the viewpoint of assembling workability. Absent. Further, it is possible to prevent the tip end of the screw from projecting toward the bottom of the hot water storage tank 21.

After assembling the lower case 21a and the upper case 21b, it is preferable to assemble the remaining related parts on the upper case 21b side. As shown in FIG. 11, a mounting opening 2 is formed on an outer wall on one upper end side of the upper case 21b.
At this point, the high temperature detecting means 80 is assembled via a metal bracket 81 or the like. Here, the high temperature detecting means 80 is in a state of being substantially perpendicular to the water discharge section 23 at one upper end side of the upper case 21b, and the high temperature detecting means 80 can be brought extremely close to the water discharge section 23.

Thus, the high-temperature detecting means 80 can accurately detect whether or not the hot water immediately before being jetted to the human body has a temperature higher than the allowable temperature. When the high temperature detecting means 80 detects a high temperature equal to or higher than the allowable temperature, the controller 100 controls the injection from the cleaning nozzle 12 to stop.

The high temperature detecting means 80 is provided in the hot water storage tank 21.
Is separated from the upper end surface by a predetermined distance, even if air is stored near the upper end surface in the hot water storage tank 21, there is no possibility that the high temperature detecting means 80 will come into contact with the air, and the highest hot water temperature in the uppermost layer Can be accurately detected. Further, since the metal bracket 81 is used as it is as the ground terminal (ground) of the high temperature detecting means 80, it is not necessary to prepare another component for the ground.

A vacuum breaker 30 is assembled to the water discharge section 23. In FIG. 6, the entire configuration of the disk can be reduced by eccentrically moving the drainage core 31 of the vacuum breaker 30 from the center of the disk. . That is, in a conventional vacuum breaker including a disc-shaped check valve, the drainage wick is located exactly at the disc-shaped axis, and the main water discharge port and the auxiliary water discharge port are provided so as to be arranged at equal intervals beside it.

For this reason, in the conventional device, the outer diameter of the disk shape is inevitably increased, and an extra arrangement space is required. The design which minimizes the size of the circle surrounding the triangle having the wick 31, the main water outlet 32, and the overflow water outlet 33 as vertices becomes possible.

As shown in FIGS. 11 and 12, the mounting portion 27 of the temperature detecting means 60 is provided below the front portion of the upper case 21b.
The mounting portion 27 is provided with a temperature detecting means 60 via a support bracket 61 and the hot water storage tank 2.
1 is assembled from the lateral direction so as to extend in the lateral direction.
Here, the temperature detecting means 60 is located immediately downstream of the heater 50 in the natural convection direction in the hot water storage tank (see FIG. 23).

Therefore, the temperature detecting means 60 can accurately detect a relatively high temperature of the hot water immediately after being heated by the heater 50. Further, the temperature detecting means 6
0 extends in the horizontal direction in the hot water storage tank 21, so that it is substantially parallel to the interface between the low-temperature water layer and the hot water layer, and comes into contact with the same temperature layer over a wide range, and more precisely, Temperature can be detected.

As described above, the mounting portion of the related parts to be assembled inside and outside the hot water storage tank 21 is arranged at the front or upper part of the lower case 21a and the upper case 21b when installed on the toilet body, so that the hot water storage tank 21 is provided. The related parts can be easily maintained and inspected while the entire apparatus including the above is installed in the toilet body.

[0107] A heat insulating material is attached to the outer wall of the hot water storage tank 21 from the viewpoint of keeping the internal warm water warm. As shown in FIG. 21, the heat insulating material 130 is formed into a single sheet having a developed view shape corresponding to the three-dimensional shape of the hot water storage tank 21, and the heat insulating material 130 is formed at an appropriate position on the outer wall of the hot water storage tank 21. Notches are provided to avoid the related components to be arranged.

That is, in the heat insulating material 130, a notch 131 for avoiding the float switch 120 and its attaching portion 205, a notch 132 for avoiding the vacuum breaker 30, the temperature detecting means 60 and its attaching portion 27 are provided.
The notch 133 for avoiding the problem and the notch 134 for avoiding the relay elbow 90 are provided at predetermined positions in advance. Further, the heat insulating material 130 has a positioning side 135 along the gutter 206 formed at the corner of the hot water storage tank 21.
Is also provided.

When attaching the heat insulating material 130 to the upper case 21b, first, the positioning side 135 of the heat insulating material 130 is set along the gutter portion 206 to determine the sticking start position. 131-134 are positioned and attached to the corresponding portions, respectively. Thereby, the heat insulating material 130 can be easily and quickly attached to the outer wall of the upper case 21b so as not to shift to a desired mode.

The heat insulating material 130 can be easily formed by cutting a general heat insulating material into the shape shown in FIG. 21, and the heat insulating material 130 can be easily attached to the outer wall of the upper case 21b with a double-sided tape or the like. it can. In addition, hot water storage tank 2
After the heat insulating material 130 is attached to the outer wall of the hot water storage tank 2,
The related parts on the outer wall 1 are the notches 131 to 13
Since it is exposed to the outside through 5, it is possible to easily cope with maintenance or inspection of these related components without the heat insulating material 130 being in the way.

In addition, wiring processing is performed so that harnesses and tubes extending from the related parts on the outer wall of the hot water storage tank 21 are not separated. As shown in FIGS. 5 and 20, hooks 215 and 216 as hooking means are vertically opposed along the front portions of the respective opening edges for joining the lower case 21 a and the upper case 21 b to each other. Is provided. Between these upper and lower hooks 215 and 216,
The harnesses 219 extended from the heater 50 and the temperature detecting means 60 can be easily hooked and wired.

Each of the hooks 215 and 216 is
a, 21b are formed along the opening edge,
Since it is possible to design into various shapes that can be easily removed from the mold and is integrally formed with each of the cases 21a and 21b, it is not necessary to prepare a hook for bundling the harnesses 219 as a separate part, and the number of parts can be reduced. Increase in cost due to the increase in

Each of the hooks 215 and 216 is
The harnesses 219 are hung so as to extend in the lateral direction below the front part of the hot water storage tank 21, and the respective harnesses 219 are arranged in such a manner as to extend in the lateral direction along the joint portion of the hot water storage tank 21. Related parts are not originally arranged at the joint portion of 21a and 21b. Therefore, various wirings and pipes can be arranged so as not to move in an optimal state without interference with other components.

As shown in FIG. 7, a warm water outflow tube 34 and an overflow tube 35 extend from the vacuum breaker 30.
The hooks 4 and 35 can be extended downward along the corners of the hot water storage tank 21 by hooking the guide pieces 29 a provided integrally with the drain cover 29 of the high temperature detecting means 80.

The middle of the overflow tube 35 extending from the guide piece 29a is temporarily hooked on the hook 218 of the flange portion 211b, and then hooked on the pressing piece 217 on the flange portion 211a. You can follow along. The hot water outflow tube 34 is hooked on the guide piece 29a and then connected to the relay elbow 90 on the side of the hot water storage tank 21.

The relay elbow 90 is formed as an independent part in the present embodiment, and is attached later to a key portion on the side of the hot water storage tank 21. All or at least a part of the relay elbow 90 is connected to the hot water storage tank. If it is configured so as to be integrally formed with the outer wall 21, the number of parts can be further reduced.

In order to store the heat exchange unit 20 assembled as described above in the case cover 10 in FIG. 13, the hot water storage tank 21 is moved horizontally from the front to the rear with respect to the case cover 11. At this time, hook part 11
a flange 21 behind the upper case 21b
1b is engaged to perform positioning and temporary fixing simultaneously. Then, as shown in FIGS. 4 and 6, a pair of screwing portions 214 in the lower case 21a may be fixed to the case cover 11 side.

The sanitary washing device 10 is mounted on the toilet body, but is controlled by the controller 100 so that it can be used any time even when the toilet is not used. When the toilet is used, hot water is spouted from the cleaning nozzle 12 in accordance with the operation of the main operation unit 101 by the user, and is used to clean the human body part.

In the hot water storage tank 21, low-temperature water (tap water) is appropriately supplied from a tap water supply passage 110 by opening and closing the main solenoid valve 111. Water supply unit 2 to which main solenoid valve 111 is connected
First, the low-temperature water entering the hot water storage tank 21 from the second is bent in the course of passing through the inflow section 45 of the rectification unit 40, and the dynamic pressure is reduced to some extent.

The low temperature water is supplied to the first space 41 of the rectification unit 40.
Then, the dynamic pressure is further reduced by passing through the communication portion 44 of the rectifying plate 43, and moves to the second space 42 in a state where the dynamic pressure is substantially uniform over the entire area of the rectifying plate 43. Then, the hot water is released from the opening 46 of the second space 42 so as to be substantially horizontal or downward toward the bottom of the hot water storage tank 21.

Thus, at the time of water supply, the low-temperature water in the lower layer of the hot water storage tank 21 gradually pushes up the hot water in the upper layer. Therefore, the lamination state from the lowest temperature water layer to the highest temperature water layer can be maintained in a stable state. In particular, it is possible to prevent as much as possible the interface that spreads substantially horizontally as a boundary between low-temperature water and hot water.

The low-temperature water newly taken into hot water storage tank 21 is heated by heater 50 near the bottom of hot water storage tank 21. As shown in FIGS. 22 and 23, in the hot water storage tank 21, since the water supply direction and the natural convection direction at the time of water stop are set substantially the same, the dynamic pressure of the low-temperature water at the time of water supply causes The existing existing convection path is not significantly disturbed. Therefore, it is possible to efficiently heat by the heater 50.

The hot water stored in the upper layer of the hot water storage tank 21 is sucked up by the vacuum breaker 30 at the time of use, and then is passed through the relay elbow 90 to the cleaning nozzle 1.
2 and is ejected from the cleaning nozzle 12. When the float switch 120 is not ON, the hot water storage tank 21 may be empty.
Is not energized.

As shown in FIG. 6, the outer wall of the upper case 21b has a gutter 206 extending downward along the corner portion in communication with the mounting portion 205 of the float switch 120. The leaked water flows down through the gutter 206 without being inadvertently spread. The water that has reached the lower end of the gutter section 206
a into the drain passage 212 in the flange portion 211a of the lower case 21a.

In addition to the water from the drainage passage 212, all the water adhering to the outer wall surface of the hot water storage tank 21 is guided to the drainage passage 212. In the state of being housed in the toilet body 10 and being attached to the toilet body, the water that has entered the drain passage 212 is drained into the toilet body through the drain hole 213 because the front drain hole 213 side is slightly inclined downward. . Thereby, it is possible to prevent the dew condensation or the like on the outer wall surface of the hot water storage tank 21 from dripping to the bottom and inadvertently getting wet around.

Further, as shown in FIG.
By providing a drainer cover 29 around the mounting opening 28, water adhering to the outer wall surface of the upper case 21b can be prevented from entering the high temperature detecting means 80, and the safety due to the earth leakage countermeasure is improved. be able to. FIG. 1
As shown in FIG. 8, by providing the drainage rib 207 around the thermal fuse 70 provided outside the bottom of the lower case 21a, even if water leaks to the bottom of the lower case 21a, water will Intrusion can be prevented.

The embodiments of the present invention have been described with reference to the drawings. However, the specific configuration is not limited to these embodiments, and even if there are changes and additions without departing from the gist of the present invention. Included in the invention.

For example, when storing the hot water storage tank 21 on the inner wall side of the case cover 11, the flange portion 21
1b, hook portions 11a (see FIG. 13) are provided as engaging portions for positioning or temporarily fixing hot water storage tank 21, but other flange portions 211a, 211 are provided.
B may be provided with a claw, and a concave groove into which the claw is fitted may be provided on the inner wall side of the case cover 11 as an engagement portion.

The hot water storage tank 21 is formed by combining a lower case 21a and an upper case 21b as each divided case. For example, a plurality of separately formed divided cases such as a combination of three vertically stacked divided cases are combined. May be combined to form a hot water storage tank. In such a case, hooks 215, 216, etc., which are hooking means capable of hooking wires or pipes extending from related parts alone or in a bundled state, may be provided at the respective opening edges connecting the respective divided cases to each other.

Furthermore, the hooking means provided at each opening edge of the lower case 21a and the upper case 21b is not limited to the hook shape, and may be formed in a simple protruding shape like the holding piece 217. Good. In addition, what is hooked on the hooking means is not limited to the related parts constituting the heat exchange unit 20 such as the temperature detecting means 60, but may be, for example, a harness or a piping tube of other parts arranged around the hot water storage tank 21. It may be.

[0131]

According to the sanitary washing device of the present invention, since the high temperature detecting means is disposed near the hot water discharge section in the hot water storage tank, the hot water immediately before being jetted to the human body part has a high temperature exceeding the allowable temperature. Whether or not there is can be accurately detected.

Further, by disposing the high temperature detecting means at a predetermined distance below the upper end surface in the hot water storage tank, even if air is stored near the upper end surface in the hot water storage tank, the high temperature detecting means can be detected. There is no danger of the means coming into contact with air, and the highest hot water temperature in the uppermost layer can be accurately detected.

[0133] Further, if a means for preventing the adhering water from entering the high temperature detecting means is provided on the outer wall surface of the hot water storage tank, a portion of the high temperature detecting means exposed outside the tank is provided. In addition, it is possible to prevent water from inadvertently adhering, and it is possible to enhance safety by taking measures against electric leakage.

Further, if the high temperature detecting means is mounted on the outer wall of the hot water storage tank via a metal bracket and the metal bracket is used as a ground terminal of the high temperature detecting means, it is not necessary to prepare a separate component for the ground. The cost can be reduced by the reduction.

Furthermore, in the case where a relay elbow is interposed in the middle of a tube for guiding hot water discharged from the water discharge section of the hot water storage tank to the cleaning nozzle, at least a part of the relay elbow is replaced with the hot water storage tank. If it is formed integrally with the outer wall, cost reduction can be realized by further reducing the number of parts. Further, since the relay elbow is interposed in the middle of the tube, it is possible to prevent the tube from being easily broken when the cleaning nozzle advances and retreats.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a sanitary washing device according to one embodiment of the present invention.

FIG. 2 is a plan view showing a sanitary washing device according to one embodiment of the present invention.

FIG. 3 is a conceptual diagram showing a sanitary washing device according to one embodiment of the present invention.

FIG. 4 is a perspective view showing a heat exchange unit in the sanitary washing device according to one embodiment of the present invention.

FIG. 5 is a front view showing a heat exchange unit in the sanitary washing device according to one embodiment of the present invention.

FIG. 6 is a plan view showing a heat exchange unit in the sanitary washing device according to one embodiment of the present invention.

FIG. 7 is a perspective view of the heat exchange unit in the sanitary washing device according to one embodiment of the present invention, as viewed from the rear side.

FIG. 8 is a perspective view of a main part of the sanitary washing device according to one embodiment of the present invention, as viewed from the back side.

FIG. 9 is a side view showing a heat exchange unit in the sanitary washing device according to one embodiment of the present invention.

FIG. 10 is an exploded perspective view showing a heat exchange unit in the sanitary washing device according to one embodiment of the present invention.

FIG. 11 is an exploded perspective view showing the upper case side of the heat exchange unit in the sanitary washing device according to one embodiment of the present invention.

FIG. 12 is a longitudinal sectional view of a hot water storage tank in the sanitary washing device according to one embodiment of the present invention.

FIG. 13 is an explanatory view of a sanitary washing device according to one embodiment of the present invention, in which a part of a hot water storage tank is cut away and the inside is viewed.

FIG. 14 is an explanatory view of a sanitary washing device according to one embodiment of the present invention, in which a part of a hot water storage tank is cut away and the inside is viewed.

FIG. 15 is an exploded perspective view showing the lower case side of the heat exchange unit in the sanitary washing device according to one embodiment of the present invention.

FIG. 16 is a perspective view showing the lower case side of the heat exchange unit in the sanitary washing device according to one embodiment of the present invention.

FIG. 17 is a cross-sectional view showing a rectifying unit disposed in a hot water storage tank and a vicinity of a mounting portion thereof in the sanitary washing device according to one embodiment of the present invention.

FIG. 18 is a bottom view showing a part of the hot water storage tank in the sanitary washing device according to one embodiment of the present invention.

FIG. 19 is a perspective view showing a side portion of the heat exchange unit housed in the case cover of the sanitary washing device according to one embodiment of the present invention.

FIG. 20 is a perspective view showing a side portion of a heat exchange unit in the sanitary washing device according to one embodiment of the present invention.

FIG. 21 is a development view showing a heat insulating material covering a hot water storage tank in the sanitary washing device according to one embodiment of the present invention.

FIG. 22 shows an approximate natural convection direction when water is stopped in the tank when the hot water storage tank in the sanitary washing device according to one embodiment of the present invention is viewed from (a) the front side and (b) the right side. It is explanatory drawing shown notionally.

FIG. 23 shows the approximate direction of water supply inside the tank when the hot water storage tank in the sanitary washing device according to one embodiment of the present invention flows into the tank when viewed from the (a) front side and (b) the right side. FIG. 4 is an explanatory diagram conceptually showing a natural convection direction.

FIG. 24 is an enlarged sectional view showing a vacuum breaker in the sanitary washing device according to one embodiment of the present invention.

FIG. 25 is a sectional view showing a heater mounting structure in the sanitary washing device according to one embodiment of the present invention.

FIG. 26 is an exploded cross-sectional view showing a heater mounting structure in the sanitary washing device according to one embodiment of the present invention.

FIG. 27 is a perspective view showing a main part of a heater mounting structure in the sanitary washing device according to one embodiment of the present invention.

FIG. 28 is a side view showing a hot water storage tank in a conventional sanitary washing device.

29 is a sectional view taken along line AA of FIG. 28.

FIG. 30 is a plan view showing a hot water storage tank in a conventional sanitary washing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Sanitary washing | cleaning apparatus 11 ... Case cover 11a ... Hook part 12 ... Cleaning nozzle 13 ... Hot air unit 14 ... Deodorizing unit 15 ... Valve unit 20 ... Heat exchange unit 21 ... Hot water storage tank 21a ... Lower case 21b ... Upper case 22 ... Water supply part 23 ... Water discharge part 27 ... Mounting part 28 ... Mounting opening 29 ... Drainer cover 29a ... Guide piece 30 ... Vacuum breaker 31 ... Drain wick 32 ... Main water discharge port 33 ... Overflow water discharge port 34 ... Water discharge tube 34a ... Continuation Hot water outflow tube 35 ... Overflow tube 40 ... Rectifier unit 41 ... First space 42 ... Second space 43 ... Rectifier plate 44 ... Communication part 45 ... Inflow part 46 ... Opening 50 ... Heater 51 ... End 53 ... Connecting part 55 ... Holding member 60: Temperature detecting means 61: Support bracket 70: Thermal fuse 0 ... High temperature detecting means 81 ... Metal bracket 90 ... Relay elbow 100 ... Controller 101 ... Main operation unit 102 ... Auxiliary operation unit 110 ... Tap water supply channel 110a ... Check valve 110b ... Strainer 110c ... Reducing valve 111 ... Main electromagnetic valve 112 ... Bypass path 112a ... Direct acting solenoid valve 112b ... Vacuum breaker 114 ... Relief valve 115 ... Vacuum break valve 116 ... Flow regulating valve 117 ... Switching valve 120 ... Float switch 130 ... Heat insulator 131 ... Notch 132 ... Notch 133 ... Notch portion 134... Notch portion 135... Positioning side 200... Drain portion 201. Guide portion 202. Rubber valve seat 203. Pressing member 204. Drain valve body 205. Drainer rib 211 ... screwed part 211a ... flange part 211b ... flange Part 212: Drainage passage 213: Drainage hole 215: Hook 216: Hook 217: Holding piece 219: Harnesses 220: Mounting hole

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Koichiro Matsushita 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka Tochiki Kiki Co., Ltd. Ryosuke Hayashi 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka Prefecture In-house Totoki Equipment Co., Ltd. (72) Minoru Matsui Minoru Matsui Aichi Kasugai-shi, Aichi Prefecture No. 1 Aichi Electric Co., Ltd. (72) Inventor Eiji Nomoto 100 Maeda-cho, Totsuka-ku, Yokohama-shi, Kanagawa F-term (reference) 2D038 JB01 JF00 KA14

Claims (7)

[Claims] 1. A sanitary washing apparatus for washing a human body part by jetting washing water from a washing nozzle, wherein a hot water storage tank for storing water supplied from the outside and hot water in the hot water storage tank having a predetermined temperature or higher. A sanitary washing device, comprising: a high-temperature detecting means capable of detecting when the temperature becomes zero, wherein the high-temperature detecting means is disposed near a hot water or water discharge part in the hot water storage tank. 2. The sanitary washing device according to claim 1, wherein said high temperature detecting means is arranged at a predetermined distance below an upper end surface in said hot water storage tank. 3. A state in which the water discharge section is disposed at one upper end side of the hot water storage tank, and the high temperature detecting means is opposed to the water discharge section at a right angle at an upper end of one side of the hot water storage tank. 3. An arrangement according to claim 1, wherein
The sanitary washing device as described. 4. The high-temperature detecting means is attached to an outer wall of the hot-water storage tank so as to be exposed inside the hot-water storage tank, and water adhering to the outer-wall surface of the hot-water storage tank enters the high-temperature detecting means. The sanitary washing device according to claim 1, 2, or 3, further comprising a water-preventing means for preventing the occurrence of water. 5. The sanitary washing device according to claim 4, wherein said water-repelling prevention means comprises a drainage cover integrally formed on an outer wall of said hot water storage tank so as to surround a mounting portion of said high-temperature detecting means. . 6. The high-temperature detecting means is attached to an outer wall of the hot-water storage tank via a metal bracket in a state exposed to the inside of the hot-water storage tank, and the metal bracket is used as a ground terminal of the high-temperature detecting means. The sanitary washing device according to claim 1, 2, 3, 4, or 5, wherein 7. A sanitary washing device installed in a toilet bowl for washing hot water or water from a washing nozzle to wash a local part of a human body, comprising: a hot water storage tank for warming and storing water supplied from outside;
The hot water storage tank includes a tube that guides hot water or water discharged from a water discharge unit to the cleaning nozzle, and a relay elbow interposed in the middle of the tube. A sanitary washing device characterized by being integrally formed on an outer wall of the washing machine.