JP3252271B2 - Water disposal mechanism of hot water cleaning equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water drainage mechanism for initial cold water discharge provided in a hot water washing apparatus of a type requiring little or no electric parts, and is generated when a water drainage operation valve is closed. It aims to eliminate noise and other problems caused by water hammer.

[0002]

2. Description of the Related Art When a room is provided with a hot water supply source such as a hot water supply pipe and a water supply source such as a water supply pipe as in a hotel or the like, a hot water washing device that requires little or no electric parts may be installed. it can. Hot water cleaning equipment that does not use electrical components
It has the advantage that there is no danger of electric leakage or electric shock even if it is installed in a unit bathroom that is humid or humid.

FIG. 4 shows a schematic configuration of a hot water washing apparatus of this type, in which hot water obtained by mixing hot water of a hot water supply source and water of a hot water supply source with a mixing valve 1 with a thermostat is used for cleaning nozzles. A hot water flow path a leading to 5 and 7 and a drain water flow path b for discharging initial cold water in a flow path branched off from the middle of the hot water flow path are provided.

A hot water flow path a between the mixing valve 1 and the washing nozzles 5 and 7 has a pressure reducing valve 2 for adjusting the pressure of the obtained hot water to an appropriate pressure, a hot water flow path a and a waste water flow path b. , A switching valve 3 for controlling the supply of hot water to the cleaning nozzles 5 and 7, and the like. Although two washing nozzles 5 and 7 are provided in the illustrated example, one is a normal shower nozzle for anal cleaning, and the other is a charm nozzle exclusively for women.

On the other hand, a drainage flow passage b branched and connected to the switching valve 3 has a drainage valve 8 for controlling the opening and closing of the flow passage, and a temperature indicating whether or not the hot water flowing in the flow passage exceeds a predetermined temperature. An indicator 9 and a waste water nozzle 10 for discharging the initial cold water to the outside are provided. The temperature indicator 9 is made of, for example, a thermochromic ink that changes color reversibly when a certain temperature is exceeded. The water-discharging nozzle 10 is usually opened facing the toilet bowl of the toilet. A check valve c is provided at an appropriate position in the flow path.

In order to perform the hot water washing by the hot water washing apparatus, first, the switching valve 3 is switched to the waste water passage b, and the waste water valve 8 is opened. Then, the supply of hot water from the mixing valve 1 into the hot water flow path a is started. Immediately after the start of cleaning,
Since the initial cold water remains in the flow path from the hot water supply source to the mixing valve 1 and in the flow path between the mixing valve 1 and the switching valve 3, it is led through the switching valve 3 to the waste water flow path b. The water is discharged from the water drain valve 10 at the end.

When the discharge of the initial cold water is continued, hot water is supplied from the hot water supply source, and the temperature of the hot water sent from the mixing valve 1 gradually increases. When the water temperature of the waste water passage b exceeds a predetermined temperature (for example, 34 ° C.), the temperature indicator 9
Indicates that the discharge of the initial cold water existing in the flow path of the hot water washing device has been completed, for example, due to thermal discoloration.

When the discharge of the initial cold water is completed, the drain valve 8 is closed, and the switching valve 3 is switched to the hot water flow path a communicating with the washing nozzles 5 and 7. Subsequently, when the desired one of the open / close valves 4 or 6 is opened, a hot water flow path a communicating from the mixing valve 1 to the washing nozzle 5 or 7 is formed, and hot water adjusted to a desired set temperature is supplied to the shower. Or, it is ejected from one of the cleaning nozzles 5 and 7 for charm.

When the required cleaning is completed, the user operates the open / close valve 4 or 6 to close the flow path.

Since the hot water washing apparatus does not use any electric parts or electric members, the opening and closing operations of the open / close valves 4 and 6 and the drain valve 8 are manually performed. Then, in order to prevent forgetting to close the valve, a self-closing type structure is used in which the valve body automatically closes the flow path and stops water flow when the hand is released.

FIG. 5 shows an example of the structure of such a self-closing valve 50. In the valve 50, a guide tube 52 is provided inside a valve case 51, and a cylindrical body 61 is inserted into the guide tube 52. The interior is slidable up and down. The upper openings of the valve case 51 and the guide cylinder 52 are closed by a lid 62.

A valve shaft 58 is connected to the lower surface of the cylindrical body 61, and a valve body 57 at the tip of the valve shaft 58 is provided with a partition wall 54 for partitioning a flow path between an inlet 53 and an outlet 56 of a valve case 51. The seat is seated on the water passage hole 55 formed in the above and closed. Valve body 57
A return spring 60 is disposed between the upper surface of the valve body and the valve chamber ceiling 59, and constantly biases the valve body 57 in the valve closing direction in which the valve body 57 is seated in the water hole 55.

An operating rod 63 is connected to the upper surface of the cylindrical body 61, and a handle 64 is attached to the tip of the operating rod 63.

In the state shown in FIG. 5A, the valve 50 pulls the handle 64 to move the cylindrical body 61 upward in the guide cylinder 52 via the operating rod 63, thereby obtaining the valve 50 shown in FIG. As described above, the valve body 57 is separated from the water hole 55 of the partition wall 54 against the urging force of the return spring 60, the flow path is opened, and hot water or initial cold water flows.

The valve opening state shown in FIG. 5B is a state in which the urging force is constantly acting on the valve body 57 from the return spring 60. Therefore, in order to maintain this valve opening state, the user needs to maintain the valve opening state. It is necessary to continue to apply the operating force in the direction in which the valve body 57 is deviated by holding the handle 64. If the user releases the handle 64, the urging force of the return spring 60 pushes down the valve body 57 to close the water hole 55 and automatically stops water flow.

[0016]

In the conventional hot water washing apparatus, when the self-closing valve 50 having the above-described structure is applied to the water drain valve 8 provided in the water drain channel b, after the initial cold water has been completely discharged, the user is required. When the operator releases his / her hand from the handle 64 and closes the drainage flow path, the valve body 57 momentarily closes the water passage hole 55 by the urging force of the return spring 60, so that the water flowing through the flow path rapidly moves. Due to the water hammer effect of being stopped, noise and other problems arise.

[0017]

SUMMARY OF THE INVENTION The present invention provides a technique for suppressing a water hammer sound generated when a drain water flow path is closed with a valve in a hot water washing apparatus provided with a water flow path for initial cold water. The characteristic feature is that a diaphragm valve is disposed in a waste water flow path that branches off from the middle of the hot water flow path that connects the mixing valve and the washing nozzle, and the diaphragm valve has an internal structure. The space is divided into a main chamber and a rear chamber by a diaphragm packing, and an inflow portion of initial cold water, a main outflow portion communicating with the main chamber and controlled to be opened and closed by the diaphragm packing, and a sub outflow portion communicating with the rear chamber are formed. Wherein the main outflow portion is connected to a main drainage flow passage, and the sub outflow portion is connected to a secondary drainage flow passage, and the secondary drainage flow passage is provided with a drainage operation valve for activating a diaphragm valve; Water passing the small holes to contact the main chamber and a rear chamber in the packing is that is formed.

[0018]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a water-discharging mechanism according to the present invention. The diaphragm valve is started by a water operation valve.

According to the present invention, the diaphragm valve has an internal space partitioned into a main chamber and a rear chamber by a diaphragm packing, and has an inlet section for initial cold water and a main outlet section which communicates with the main chamber and is opened and closed by the diaphragm packing. And a sub-outflow portion communicating with the rear chamber, and a small water passage for communicating the main chamber with the rear chamber is formed in the diaphragm packing. When the drainage operation valve of the secondary drainage channel connected to the secondary drainage opening is opened, the diaphragm packing is deformed so as to swell from the main chamber side to the rear chamber side by the water pressure of the initial cold water applied to the inflow part, and The communicating main outflow portion is opened. As a result, the mixing valve communicates with the main drainage channel, and the initial cold water present in the channel therebetween is discharged to the outside mainly through the diaphragm valve and the main drainage channel.

Incidentally, a small amount of the initial cold water is discharged from the secondary drain passage through the back chamber through the small water passage formed in the diaphragm packing.

When the discharge of the initial chilled water is completed, the secondary drainage flow path is closed by the drainage operation valve. Then, the hot water flows from the main chamber into the rear chamber little by little through the small water passage formed in the diaphragm packing, thereby recovering the volume of the rear chamber. For this reason, the diaphragm packing that has swelled toward the rear chamber is restored to the initial state, and eventually closes the main outflow portion.

In the present invention, after the initial cold water is discharged, it is the secondary drainage flow passage having a small flow rate that is immediately closed by operating the drainage operation valve. It takes a long time for the diaphragm packing to return to the initial state after closing, and the diaphragm packing is closed relatively gently. Therefore, immediately after the closing operation of the drainage flow passage by the drainage operation valve, the water hammer effect caused by the blockage of the secondary drainage flow passage is extremely small or negligible, and the subsequent main drainage flow passage is gradually closed. Water hammer does not occur as it proceeds. Therefore, the water drainage mechanism according to the present invention does not have a possibility of generating a water drama sound which poses a practical problem.

[0023]

FIG. 1 shows a schematic configuration of a hot water washing apparatus provided with a water drainage mechanism according to the present invention. The basic configuration of this hot water cleaning device is the same as that of the conventional example. Hot water of a hot water supply source and water of a water supply source are mixed by a mixing valve 1 with a thermostat. And a waste water channel b for branching from the middle of the hot water channel a and discharging the initial cold water in the channel. Between the mixing valve 1 and the cleaning nozzles 5 and 7 in the hot water flow path a, a pressure reducing valve 2 for adjusting the water pressure to an appropriate value, a switching valve 3 for switching between the hot water flow path a and the waste water flow path b, and a cleaning nozzle 5 , 7 (one is a shower nozzle for normal anal irrigation, the other is a female-only charm nozzle), an open / close valve for controlling the supply of hot water
Is provided. A check valve c is provided at an appropriate position in the flow path.

The difference of the present invention from the conventional one lies in the configuration of the drainage channel b. Waste water flow path b branched and connected to the switching valve 3
The diaphragm valve 11 is disposed, discharging this and the diaphragm valve 11 and the main water discard flow path b ₁ and the secondary water discard flow path b ₂ are connected respectively, after both were merged at the ends near the initial cold water to the outside Connected to the draining nozzle 10 to be drained.

[0025] The sub water discard flow path b _2, whether water discard operation valve 30 performs a start operation of the diaphragm valve 11 by the opening and closing control of the flow path, hot water flowing in the flow path exceeds a predetermined temperature A temperature indicator 9 for displaying is provided.
The temperature indicator 9 is configured using thermochromic ink or the like, as in the conventional example. In addition, as described later, when the water drainage operation valve 30 is configured to automatically close the flow path when the water flowing through the flow path exceeds the set temperature, the temperature indicator 9 may be omitted. It is possible.

FIG. 2 shows the structure of the diaphragm valve 11 and the drainage operation valve 30 which can automatically close the flow passage according to a set temperature. The diaphragm valve 11 in this embodiment is
The inner space is defined by the diaphragm packing 21 as the main chamber 13.
The valve case is divided into two parts, that is, an inlet part 14 and a main outlet part 1 joined together with a diaphragm packing 21 interposed therebetween.
5 and a portion 18 including the sub outlet 19.

A guide portion 16 extends from the main outflow portion 15 to the inside of the main chamber 13, and a sheet portion 17 at the tip thereof abuts against the surface of the diaphragm packing 21 in a watertight manner. Rear room 2
0 and the back surface of the diaphragm packing 21 are provided with locking projections 24 and 25 at positions facing each other, and are sandwiched between the locking projections 24 and 25 to return the return spring 2.
3 are provided. In addition, diaphragm packing 21
The water passage small hole 22 which connects the main room 13 and the back room 20
Are formed.

The water discard operation valve 30 which is in communication with the sub-outlet portion 19 of the diaphragm valve 11 by the secondary water discard flow path _{b 2}
Has the following structure in this embodiment. As shown in the figure, the basic structure is the same as the conventional example,
That is, the guide tube 33 is provided inside the valve case 32, and the cylindrical body 45 is provided inside the guide tube 33, and the upper openings of the valve case 32 and the guide tube 33 are closed by the lid 31. A valve shaft 40 is continuously provided on the lower surface of the cylindrical body 45, and a valve body 41 at the tip of the valve shaft 40 is formed on a partition wall 35 that defines a flow path between an inlet 34 and an outlet 39 of the valve case 32. It sits in the hole 36 and closes it. A handle 47 is attached to a tip of an operation rod 46 connected to the upper surface of the cylindrical body 45.

The drainage operation valve 30 differs from the conventional example in the following points. That is, the upper surface of the valve element 41 and the valve chamber ceiling 44
And a return spring 43 made of a shape memory alloy is disposed between them, and an operation spring 37 for urging the valve body 41 upward in the valve opening direction is disposed below the valve body 41. In addition, both ends of the operation spring 37 at the lower portion of the valve body 41 are held by holding projections 38 and 42 projecting from the bottom surface of the valve case 32 and the center of the lower surface of the valve body 41 so as not to easily fall off. .

The return spring 43 disposed above the valve body 41 is
The shape at the seating position of the valve element 41 is a memory shape, and the phase transition point causing the recovery deformation to the memory shape is approximately 34 to 38 ° around the water temperature at the time of completion of the discharge of the initial cold water.
Set to C.

The spring constant of the lower operation spring 37 and the spring constant of the upper return spring 43 are determined by the water pressure acting on the upper surface of the valve 41 and the return spring 4 when the valve 41 is seated.
3 is greater than the biasing force of the lower operation spring 37 to hold the valve body 41 in the closed state. When the valve body 41 is opened, the water acting on the valve body 41 The sum of the pressure and the urging force of the operation spring 37 is set so as to exceed the urging force of the upper return spring 43 so that the valve body 41 can be held in the valve-open state by itself. Actually, the spring constant of the lower operation spring 37 is made slightly larger than the spring constant of the upper return spring 43.

It should be noted that the diaphragm valve 11, the water drainage operation valve 30, and the sub-water drainage channel b2 connecting the _two can be integrally formed.

The diaphragm valve 1 constructed as described above
The operation of discharging the initial cold water by the water drainage mechanism according to the present invention including the water drain valve 1 and the water drain operation valve 30 is as follows.
First, operating the switching valve 3 (see FIG. 1),
The flow path connects the mixing valve 1 and the waste water flow path b. In this state, the handle 4 of the drainage operation valve 30 shown in FIG.
7 to pull the cylindrical body 45 via the operating rod 46 into the guide cylinder 3
Raise within 3. As a result, as shown in FIG.
The valve element 41 is separated from the water hole 36 of the partition wall 35 against the urging force of the return spring 43, and the flow path is opened. Then, the pressure in the rear chamber 20 of the diaphragm valve 11 decreases, and the water pressure on the main chamber 13 side where the pressure of the initial cold water acts from the inflow portion 14 becomes relatively high. As shown in the drawing, the swelling deformation occurs against the rear chamber 20 against the urging force of the return spring 23. As a result, the diaphragm packing 21 separates from the seat portion 17 of the valve case main chamber side portion 12, the main outflow portion 15 is opened, and the flow from the mixing valve 1 through the diaphragm valve 11 to the water discharge nozzle 10 at the end of the water discharge channel b is discharged. The passage is formed so that the initial cold water is discharged.

[0034] At this time, a small amount of initial cold water through the water passage small holes 22 of the diaphragm seal 21, through the back chamber 20 and the auxiliary water discard flow path b ₂ of the diaphragm valve 11, flows through the water discard operation valve 30. Valve element 4 in the drain valve 30
The above-mentioned valve-open state of 1 is maintained by the comprehensive action of the urging force of the lower operation spring 37 and the dynamic pressure of the water flowing through the flow path even when the user releases his / her hand from the handle 47. You.

When the discharge of the initial cold water proceeds and the temperature of the hot water in the flow passage exceeds a set temperature (for example, 34 to 38 ° C.), a return made of a shape memory alloy disposed above the valve body 41 of the water drainage operation valve 30. A phase transition occurs in the spring 43, and the spring 43 recovers and expands the memory shape, that is, the shape at the seating position of the valve body 41. As a result, the valve element 41 is forcibly moved to the lower seating position. That is, when the hot water in the flow path exceeds the set temperature, the drainage operation valve 30 automatically shifts to the valve closed state shown in FIG. At this time, the water hammering is generated with the blockage of the flow path, the flow rate of water flowing to the secondary water discard flow path b ₂ is slightly limited by the opening area of the water passage small holes 22 formed in the diaphragm seal 21 Therefore, the water hammer action is suppressed to an almost negligible level or a level that causes no practical problem. In addition, the valve body 41 after sitting is
When the water pressure acting on the upper surface is applied together with the urging force of the return spring 43, the valve-closed state is maintained.

The water discard operation proceeds valve 41 of the valve 30 is seated in the valve closing state, when the sub-water discard flow path b ₂ is closed, the main and recovery pressure of the back chamber 20 of the diaphragm valve 11 It becomes equal to the water pressure of the chamber 13. Then, the shape of the diaphragm packing 21 is gradually restored by the urging force of the return spring 23, and eventually comes into contact with the sheet portion 17 in a watertight manner, and the main outflow portion 1.
5 is closed. In this way, the main water discard flow path b ₁ is closed, the initial cold water discharge work is completed, but this time, because the main closure of the water discard flow path b ₁ is to proceed relatively slowly, water wherein There is no danger of fire.

The embodiments of the present invention can be applied to various applications other than those described above. For example, as shown in FIG. 3, it is also possible to adopt a configuration in which the drainage operation valve 30 provided in the secondary drainage flow passage opens the valve body 41 by the pushing operation of the handle 47. In the embodiment shown in the drawing, the valve element 41 is configured to be seated in the water hole 36 from the lower surface side of the partition wall 35 to close the water hole 36, and the handle element 47 is pushed in downward, whereby the valve element 4 is pressed.
1 is separated from the water hole 36 to open the flow path. In this embodiment, the operation spring 3 is disposed above the valve element 41.
7, which is different from the above-described embodiment in that the return spring 43 is provided at the lower part.

In the case of the present embodiment, the return spring 43 may be made of a shape memory alloy, but the operation spring 37 may be made of a shape memory alloy. in this case,
When the temperature of the hot water in the flow path exceeds the set temperature, the operation spring 37 contracts to the state shown in FIG. 3A, and the urging force of the lower return spring 43 pushes the valve body 41 against the water passage hole 36 to maintain this. Shall be closed.

Further, the water draining operation valve may have a conventional structure shown in FIG. However, in this case, as shown in FIG. 1, it is desirable to install a temperature indicator downstream of the drainage operation valve in the secondary drainage flow path.

In the drain valve, serrations, splines, and other key structures are provided between the cylindrical body 45 and the guide cylinder 33 so that axial movement is possible but rotation is prevented. It is also conceivable to improve operation stability.

In addition, the specific structure of the water drainage mechanism according to the present invention does not prevent the appropriate change according to the embodiment.

[0042]

According to the present invention, a water hammer sound is generated when the drainage operation valve is operated and the drainage passage is closed after the discharge of the initial cold water is completed in using the hot water washing device. There is no fear. Therefore, when the hot water washing device is installed in a facility such as a hotel or an apartment house such as an apartment, noise and other problems due to water hammer can be eliminated.

[Brief description of the drawings]

FIG. 1 is a schematic view showing an embodiment of a water draining mechanism of a hot water cleaning device according to the present invention.

FIGS. 2A and 2B show an embodiment of a diaphragm valve and a drainage operation valve used in a drainage mechanism according to the present invention, wherein FIG. 2A is a longitudinal sectional view in a closed state, and FIG. It is a longitudinal cross-sectional view of a valve-down state.

3A and 3B show different embodiments of a drainage operation valve used for a drainage mechanism according to the present invention, wherein FIG. 3A is a longitudinal sectional view in a closed state, and FIG. 3B is a longitudinal section in an open state. FIG.

FIG. 4 is a drawing showing a schematic configuration of a conventional hot water cleaning apparatus.

5A and 5B show a conventional drain valve structure, in which FIG. 5A is a longitudinal sectional view in a closed state, and FIG. 5B is a longitudinal sectional view in an open state.

[Explanation of symbols]

a Hot water flow path b Waste water flow path b ₁ Main waste water flow path b ₂ Secondary waste water flow path 1 Mixing valve 3 Switching valve 5 Wash nozzle 7 Wash nozzle 9 Temperature indicator 10 Water waste nozzle 11 Diaphragm valve 13 Main chamber 14 Inflow section 15 Main outflow part 17 Seat part 19 Sub outflow part 20 Back chamber 21 Diaphragm packing 22 Water passage small hole 23 Return spring 30 Waste water operation valve 32 Valve case 33 Guide cylinder 34 Inlet 35 Partition wall 36 Water hole 37 Operation spring 39 Outlet 40 valve shaft 41 valve element 43 return spring 47 handle

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E03D 9/08 F16K 21/04

Claims (3)

(57) [Claims] 1. A mechanism for discharging initial cold water in a hot water washing apparatus adapted to mix hot water and water with a mixing valve and to emit hot water having a set temperature from a washing nozzle, wherein the mixing valve is provided. A drainage flow path for initial cold water discharge is provided branching in the middle of the hot water flow path that communicates with the washing nozzle,
A diaphragm valve is disposed in the drain channel, and the diaphragm valve has an internal space partitioned into a main chamber and a rear chamber by a diaphragm packing, and communicates with an inflow portion of initial cold water, the main chamber, and a diaphragm packing. A main outflow portion controlled to be opened and closed, and a sub outflow portion communicating with the rear chamber, a main drainage flow passage connected to the main outflow portion, and a sub drainage flow passage connected to the sub outflow portion; A drainage operation valve for starting the diaphragm valve is provided in the drainage flow path,
A water discharge mechanism for a hot water cleaning device, wherein a small water passage for communicating a main chamber and a rear chamber is formed in the diaphragm packing. 2. The hot water washing apparatus according to claim 1, further comprising a temperature display means for displaying a temperature of hot and cold water flowing in the flow passage in the secondary waste water flow passage, downstream of the operation valve. mechanism. 3. The drainage operation valve in the sub-drainage flow path is capable of self-holding a valve body in an open state at a temperature lower than a set temperature, and is operated by an urging means using a shape memory alloy when the temperature exceeds the set temperature. The drainage mechanism of the hot water washing device according to claim 1, wherein the body is configured to close the valve.