JPH0612578U - Hot water heating toilet seat - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent a hunting from occurring in the toilet seat temperature in a system that heats the toilet seat by heat transfer from hot water supplied, and to provide a heated toilet seat that is also suitable for a local cleaning function. A nozzle device for local cleaning, a toilet seat in which a hot water passage is formed to heat the surface, and a valve unit connected to an external water supply source and a hot water supply source for mixing water and hot water The nozzle unit and the toilet seat are provided on the downstream side of the valve unit to connect the flow passages, and the toilet seat is provided with a flow passage system for discharging the supplied hot water to the outside, and the valve unit is directed to the nozzle device and the toilet seat side. A valve mechanism that can independently control opening and closing of the flow path is provided. Using the valve unit as a common hot water source,
Heating of the toilet seat and supply of hot water for local cleaning are performed, and hunting of the toilet seat temperature with respect to the set temperature is suppressed as compared with the case where high-temperature hot water is directly supplied to the toilet seat.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a hot water heating toilet seat that heats a toilet seat having a local cleaning function using the same hot water as the hot water supply system for cleaning.

[0002]

[Prior art]

 There are two types of toilet seats for seated flush toilets: a heated toilet seat that has a heater inside to heat it and a hot water circulation path that is heated by the hot water. As an example of the latter, there is one described in Japanese Utility Model Laid-Open No. 63-95783.

This is a toilet seat device equipped with a nozzle device for local cleaning, and has a configuration in which pipes are branched from a water heater that supplies hot water to the nozzle device, and hot water is circulated and supplied into the toilet seat. is there. The hot water to the nozzle device joins with the water supplied from another system, the temperature is adjusted by a mixing valve, and the temperature is supplied to the nozzle device as a temperature suitable for cleaning. In addition, an electromagnetic on-off valve is installed in the hot water path that circulates between the toilet seat and the water heater, and a temperature sensor that detects the heating temperature of the seat is installed in the toilet seat. The temperature of the toilet seat is controlled by opening and closing the on-off valve. In other words, the hot water passing through the toilet seat is intermittently supplied to heat the toilet seat while maintaining the temperature within a certain temperature range.

[0004]

[Problems to be solved by the device]

 The hot water for cleaning that goes to the nozzle device mixes the hot water from the water heater and the water from the water supply pipe by the mixing valve, so the temperature of the wash water can be finely adjusted.

However, on the toilet seat side, since the electromagnetic on-off valve is simply opened and closed based on the signal from the temperature sensor that detects the temperature, the temperature variation with respect to the optimum heating temperature, that is, the hunting tends to increase.

That is, when the temperature sensor detects that the preset optimum heating temperature is exceeded in the control circuit, the electromagnetic opening / closing valve is closed and circulation of the hot water is stopped, and the temperature of the hot water remaining in the toilet seat decreases. Begin to. When the toilet seat temperature falls below the optimum heating temperature, the electromagnetic on-off valve opens again to circulate hot water, so temperature fluctuations cannot be avoided. Since the heating medium is a circulating fluid, the time required to recover the optimum heating temperature is longer than that of a heating source such as a heater.

Further, when the hot water supplied to the toilet seat is supplied by a water heater directly connected to the toilet seat or a hot water supply pipe for high-temperature hot water on the building side, the original temperature of the hot water is lower than that required for heating. Since it is high, the hunting phenomenon often appears quite prominently.

As described above, in a system for heating hot water by circulating hot water in the toilet seat, it is appropriate to rely on a method of controlling intermittent supply or stoppage of hot water circulation for the purpose of adjusting the temperature. There is a problem that the heating temperature cannot be maintained.

The problem to be solved in the present invention is to prevent hunting in the toilet seat temperature in a system for heating the toilet seat by heat transfer from hot water supplied, and to provide a heated toilet seat suitable for a local cleaning function. It is in.

[0010]

[Means for Solving the Problems]

 The present invention relates to a nozzle device for local cleaning, a toilet seat having a hot water passage formed therein for heating the surface, and a valve unit connected to an external water supply source and a hot water supply source for mixing water and hot water. The nozzle unit and the toilet seat are provided on the downstream side of the valve unit to connect the flow paths, and the toilet seat is provided with a flow path system for discharging the supplied hot water to the outside. It is characterized in that it is provided with a valve mechanism that can control opening and closing independently of the device and the flow path toward the toilet seat side.

Further, the valve unit may be provided with a valve mechanism that can be opened and closed by giving priority to the flow path to the nozzle device while a person is seated on the toilet seat.

[0012]

[Action]

 Water and hot water from the water supply source and hot water supply source are mixed in the valve unit and set to an appropriate temperature as, for example, cleaning water for local cleaning. The hot water is supplied to and stopped from the toilet seat side and the nozzle device side by a valve mechanism that is operated to open and close independently, and heating and local cleaning of the toilet seat is performed using the valve unit as a common hot water supply source. It is possible to supply hot water for use.

The hot water to the toilet seat is not directly fed from a water heater such as an electric water heater or a hot water supply main of the building, but is supplied to the toilet seat by being mixed with water and having its temperature lowered. For this reason, even if the control to maintain the temperature of the toilet seat at a certain optimum heating temperature is performed by the heat transfer temperature increase when hot water is supplied by the valve mechanism opening and closing and the non-heat transfer when stopped, Compared to the case where hot water is supplied and control is performed by such a method, hunting with respect to the set temperature is suppressed and a stable heating temperature is maintained.

Further, while the person is sitting on the toilet seat, if the valve unit prioritizes opening and closing of the flow path to the nozzle device side over the toilet seat side, hot water is not supplied to the toilet seat, but the toilet seat temperature is The user does not feel cold because it does not drop sharply.

[0015]

【Example】

 FIG. 1 is a schematic view of a system equipped with a hot water heating toilet seat according to the present invention, and FIG. 2 shows an example of toilet equipment used for this system.

In FIG. 2, a casing 1a of a sanitary washing device for local washing is fixed to the toilet body 1, and a toilet seat 2 and a toilet lid 1b are attached to this casing. The sanitary washing device is provided with a washing water supply pipe inside and a nozzle device 3 is provided at the end of the flow path, and the washing water is jetted after the nozzle device 3 is advanced to the washing position.

As shown in FIG. 1, the toilet seat 2 and the nozzle device 3 are both connected to a common water supply system and hot water supply system. In the illustrated example, a water supply main 4a, a hot water supply main 4b, and a drainage pipe 4c are provided outside the toilet, and the water supply and hot water supply mains 4a, 4b are housed in, for example, a casing 1a of a sanitary washing device. Connected to unit 5.

The valve unit 5 is provided with a wash water supply pipe 7 that connects the hot water supply pipe 6 toward the toilet seat 2 and the nozzle device 3, and a drainage pipe 8 for draining low-temperature wash water in the initial stage of cleaning. Connect each. The hot water supply pipe 6 is connected to a heat transfer pipe 2a which is installed inside the toilet seat 2 so as to circulate almost the whole thereof, and a recovery pipe 9 is installed between the end of the heat transfer pipe 2a and the drain pipe 4c. .

The valve unit 5 is a thermostat mixing valve having an automatic temperature adjustment function inside thereof, and can mix and discharge water and hot water from the water supply and hot water supply mains 4a and 4b to a preset temperature. Has a mixing valve mechanism. Further, electromagnetic opening / closing valves 6a, 7a, 8a are incorporated in the flow paths downstream of the mixing valve and toward the hot water supply pipe 6, the wash water supply pipe 7, and the waste water pipe 8. The solenoid on-off valves 6a to 8a are controlled by the controller 10 independently of their operations.

Further, the hot water supply pipe 6 and the recovery pipe 9 for circulating hot water in the toilet seat 2 are provided with temperature sensors 6b and 9a for detecting the temperature of the hot water passing through the inside. Further, temperature sensors 7b and 8b are similarly incorporated in the wash water supply pipe 7 and the waste water pipe 8. Each of these temperature sensors 6b-9a inputs the temperature detection signal to the controller 10, and controls the operation of each electromagnetic opening / closing valve 6a-8a based on this.

Here, the driving of the nozzle device 3, the heating of the toilet seat 2 and the operation of other functional parts are performed by an operation panel 1c provided in the casing 1a or a remote controller (not shown) hung on the wall of the toilet. To do. The operation panel 1c is provided with a cleaning / stop switch for driving and stopping the nozzle device 3, a heating switch for heating and keeping the toilet seat 2 warm, and the like.

In addition, the toilet seat 2 is provided with a seating sensor 2b for detecting that a person is sitting on it. As the seating sensor 2b, for example, a pressure sensor or the like that detects a load when a person sits down can be used, and the detection signal is input to the controller 10.

In the above-mentioned configuration, the toilet seat 2 is kept warm to keep its surface temperature at an appropriate temperature when the toilet is not used. This heat retention is performed by opening the electromagnetic on-off valve 6a and flowing hot water from the hot water supply pipe 6 through the recovery pipe 9 toward the drainage pipe 4c. By circulating this hot water, the toilet seat 2 is heated by the heat radiation from the heat transfer tube 2a, and is maintained at the preset heating temperature.

During heating of the toilet seat 2, the temperature sensor 6 b of the hot water supply pipe 6 and the temperature sensor 9 a of the recovery pipe 9 detect the temperature of the hot water passing therethrough to lower the temperature of the hot water before and after passing the toilet seat 2. Based on the reference, the temperature of the toilet seat 2 is calculated by the control circuit of the controller 10. When the temperature of the toilet seat 2 becomes higher than the set value, the electromagnetic on-off valve 6a on the hot water supply pipe 6 side is closed, and when the temperature of the toilet seat 2 becomes low, the hot water circulation is operated to open the toilet seat 2 to the set temperature. Keep warm.

When a person sits down on the toilet seat 2 when using it, the seating sensor 2 b detects it and inputs the signal to the controller 10. Then, the controller 10 continuously opens the electromagnetic on-off valve 8a of the waste water pipe 8 for a certain period of time, and operates them so as to close the electromagnetic on-off valve 6a of the hot water supply pipe 6 that has been open until now. Due to the opening of the electromagnetic opening / closing valve 8a, the toilet seat 2 is not heated and the hot water is not circulated inside the device, so that the water is supplied from the hot water supply mains 4a and 4b into the valve unit 5. Even if there is hot water that has accumulated and the temperature has dropped, it is discharged from the drain pipe 8 to the drain pipe 4c. When the temperature sensor 8b provided on the waste water pipe 8 detects a preset constant temperature, the controller 10 again closes the electromagnetic on-off valve 8a of the waste water pipe 8 and at the same time turns on the electromagnetic on-off valve 6a of the hot water supply pipe 6. open.

As described above, immediately after a person sits on the toilet seat 2, the low-temperature washing water in the flow path is prevented from being discharged, and the low-temperature water is prevented from being jetted from the nozzle device 3. While a person is sitting on the toilet seat 2, the electromagnetic on-off valve 6a opens to create a hot water circulation path around the toilet seat 2, so that the toilet seat 2 is kept warm without lowering its temperature. Also in this period, the heating temperature of the toilet seat 2 is calculated while detecting the temperature of the hot water by the temperature sensors 6b and 9a, and the electromagnetic opening / closing valve 6a is closed when the temperature becomes higher than the set value, and the setting is made after this closing. When the value becomes lower than the value, the electromagnetic opening / closing valve 6a is opened again and the toilet seat 2 is heated.

It should be noted that the electromagnetic on-off valve 6a on the side of the toilet seat 2 is closed for a short time so that the low-temperature hot water is discharged from the flow path, so that the temperature of the toilet seat 2 does not drop sharply and is cold. Even so, the sitting person does not feel cold.

While sitting on the toilet seat 2, the toilet seat 2 is kept at the set temperature by circulating or stopping the hot water, and when using the nozzle device 3, the hot water from the valve unit 5 is cut only to the nozzle device 3 side. Replace That is, only the electromagnetic opening / closing valve 6a on the hot water supply pipe 6 side was opened / closed in the valve unit 5 during the non-washing period even when seated, but when the washing switch of the operation panel 1c is turned on, the controller 10 causes Only the electromagnetic opening / closing valve 7a on the side of the cleaning water supply pipe 7 is opened, and the electromagnetic opening / closing valves 6a and 8a of the hot water supply pipe 6 and the waste water pipe 8 are maintained in the closed state. By such control, when cleaning is performed by the nozzle device 3, hot water is supplied only from the valve unit 5 to the nozzle device 3, and a sufficient amount of water necessary for cleaning can be secured.

Next, when the cleaning stop switch of the operation panel 1c is operated, the electromagnetic opening / closing valve 7a of the cleaning water supply pipe 7 is closed and the ejection of cleaning water from the nozzle device 3 is stopped. If the temperature of the toilet seat 2 is lower than the set temperature by the temperature sensors 6b and 9a, the electromagnetic on-off valve 7a on the hot water supply pipe 6 side and the electromagnetic on-off valve 6a on the hot water supply pipe 6 side are closed at the same time. open. As a result, even if the temperature of the toilet seat 2 drops when the sitting time is long or the like, it is possible to immediately recover the set temperature. In addition, if the temperature of the toilet seat 2 is kept at the set temperature at the end of cleaning, the electromagnetic opening / closing valve 6a remains closed, and control is performed by detecting the temperature of the toilet seat 2 using the same temperature sensors 6b and 9a as described above. Is performed.

Further, when a person leaves the toilet seat 2, only the electromagnetic opening / closing valve 6a on the side of the hot water supply pipe 6 can be opened / closed by the controller 10 as in the state before use, so that the toilet seat 2 is kept at the preset temperature. Control the flow of hot water.

In the above description of the operation, the case where heating of the toilet seat 2 is required, that is, the case where the heating switch is turned on has been described, but when the toilet seat 2 is not heated, that is, the heating switch is turned off, the electromagnetic switching The valve 6 is not operated and is always closed.

Here, the hot water sent to the nozzle device 3 and the toilet seat 2 uses the common valve unit 5 as its supply source. Therefore, the temperatures of the hot water flowing toward the nozzle device 3 and the toilet seat 2 are the same, and the wash water from the nozzle device 3 comes into contact with the human body, so the temperature range is also limited. For example, it is said that the temperature of the wash water is preferably close to or slightly higher than the human body temperature. Therefore, even when the temperature of the hot water at the time of this cleaning is used as a reference, the heating temperature of the toilet seat 2 can be in a comfortable temperature range for the human body. In other words, even if one valve unit 5 is used to heat the toilet seat 2 and to inject cleaning water from the nozzle device 3, since both applied temperatures are close to each other, it can be sufficiently utilized as a common hot water source.

Further, since the hot water supply main 4b and the toilet seat 2 are not directly connected and the valve unit 5 for mixing with the water from the water supply main 4a is provided, the hot water from the hot water supply main 4b is used as the toilet seat. It is never sent to 2. The temperature of the hot water toward the toilet seat 2 is close to the temperature of the human body, and it is preferable to heat the toilet seat 2 itself in such a temperature range. Does not become abnormally high or low.

Therefore, even if the opening / closing operation of the opening / closing solenoid valve 6a is performed by detecting the temperature of the toilet seat 2 based on the temperature detection of the hot water by the temperature sensors 6b and 9a, heating with less hunting is possible. Further, even if the temperature of the hot water from the hot water supply main 4b is high, it can be mixed with water by the valve unit 5 and lowered to a temperature suitable for local cleaning, so that there is no influence of the temperature of the hot water from the hot water supply main 4b. Absent. That is, in the case of equipment such as an apartment house or a hotel, since the hot water supply main 4b is also used for supplying hot water to the bathroom, its temperature is considerably high, but the provision of the valve unit 5 does not restrict the hot water supply temperature. It can be a good facility. Therefore, it can be freely combined with other hot water supply equipment, and there is no restriction on the installation of the toilet bowl.

In the embodiment, the hot water supply main pipe 4b provided on the building side is shown as the hot water supply source, but it goes without saying that an electric water heater or another water heater can be used instead.

Further, the valve unit 5 may be provided with two hot water supply passages that can separately set the temperatures of hot water supplied to the toilet seat 2 and the nozzle device 3 instead of the embodiment.

[0037]

[Effect of device]

 In the present invention, the hot water is not supplied to the toilet seat as it is, but is sent as the hot water for heating after being mixed with the water by the valve unit, so the hot water having a temperature higher than the actual required heating temperature is supplied. Compared to the case, the absolute value of hunting for the optimum heating temperature can be reduced. For this reason, even with the method of controlling the heating toilet seat by opening and closing the valve mechanism provided in the valve unit, the heating temperature will not abnormally rise or fall below the optimum temperature, and stable heating will be achieved. Can be maintained at temperature.

Further, while the person is sitting on the toilet seat, the valve unit gives priority to opening and closing the flow path to the nozzle device side over the toilet seat side. In this case, hot water is not supplied to the toilet seat, but since the toilet seat temperature does not drop sharply, the user does not feel cold, and the hot water temperature for toilet seat heating is relatively close to the hot water temperature for local cleaning. Since it is a thing, it is not bathed in cold clean water. Moreover, since it is not necessary to provide a plurality of valve units, the piping space does not become bulky, and the size can be reduced.

[Brief description of drawings]

FIG. 1 is a schematic view showing a system for supplying water, hot water and a nozzle device around a hot water heating toilet seat of the present invention.

FIG. 2 is a perspective view showing an example of a toilet device including a hot water heating toilet seat.

[Explanation of symbols] 1 toilet body 2 toilet seat 2a heat transfer tube 2b seating sensor 3 nozzle device 4a water supply main 4b hot water supply main 4c drainage pipe 5 valve unit 6 hot water supply pipe 6a electromagnetic on-off valve 6b temperature sensor 7 wash water supply pipe 7a electromagnetic Open / close valve 7b Temperature sensor 8 Waste water pipe 8a Electromagnetic open / close valve 8b Temperature sensor 9 Recovery pipe 9a Temperature sensor

Claims (2)

[Scope of utility model registration request] 1. A local cleaning nozzle device, a toilet seat having a hot water passage for heating the surface thereof, and a water supply source provided outside and a valve connected to the hot water supply source for mixing water and hot water. A unit, the nozzle device and the toilet seat are provided on the downstream side of the valve unit to connect the passages, and the toilet seat is provided with a passage system for discharging the supplied hot water to the outside. A hot water heating toilet seat comprising a nozzle device and a valve mechanism capable of independently controlling opening and closing of a flow path toward the toilet seat side. 2. The hot water heating toilet seat according to claim 1, wherein the valve unit includes a valve mechanism capable of opening and closing the flow path to the nozzle device with priority during a period in which a person is seated on the toilet seat. .