JP2001065897A - Hot water spray floor heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a floor heater for warming the floor face of bathroom efficiently by spraying only hot water of set temperature or above to the floor face of bathroom without being influenced by water (dead water) remaining in pipeline or hot water not heated sufficiently by a hot water supply apparatus. SOLUTION: A temperature sensor 5 detects the temperature of hot water flowing through a hot water supply pipeline 4. A hot water supply switching means 6 discards hot water flowing through the hot water supply pipeline 4 when the detected temperature is lower than a set level otherwise supplies the hot water to a hot water spray nozzle 2. Since only hot water of set temperature or above is sprayed to the floor face of bathroom, efficient floor heating is realized.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor heating apparatus for warming a floor of a washing place by spraying hot water on the floor of a washing place in a bathroom.

[0002]

2. Description of the Related Art As an example of a technique of spraying hot water in order to warm a washing place in a bathroom in advance, see Japanese Patent Application Laid-Open No. 6-11 / 1994.
As disclosed in Japanese Patent No. 7655, water is uniformly sprayed from a water heater outside the bathroom through a hot water supply line embedded in the bathroom wall by a group of nozzles below the bathroom door to warm the entire washing area. There was something that was expected.

[0003]

The floor heating apparatus as described above has a structure in which a water heater is connected to a spray nozzle through a hot water supply pipe. Generally, a hot water supply device is often located outside a bathroom because it involves gas combustion, and a hot water supply pipe is often shared with a bathtub or a shower. Therefore, the length of the hot water supply pipe to the bathroom has to be considerably long, and the amount of water (dead water) remaining in the pipe has also become considerable. The temperature of the dead water is affected by the season, the temperature of the day, the elapsed time since the last use, etc.
It was difficult to demand a certain level of performance from the floor heating device. Also, the temperature of the dead water in the winter is cold, and if the dead water is sprayed on the floor of the washing place as it is, the floor of the washing place will be cooled down.

[0004] The present invention has been made in view of the above points, and a floor heating system capable of efficiently warming the floor of a washing place by spraying only hot water having a predetermined temperature or higher on the floor of the washing place. An apparatus is provided.

[0005]

In order to solve the above-mentioned problems, a floor heating device according to the present invention is provided with a spray nozzle 2 for spraying water to warm the floor of the washing room 1 in a washing room 1 of a bathroom and a water heater. In order to supply hot water from nozzle 3 to hot water nozzle 2, hot water supply device 3 and hot water nozzle 2 are communicated through hot water supply line 4, and a temperature sensor 5 for detecting the temperature of hot water flowing through hot water supply line 4 to hot water supply line 4 is provided. When the temperature of the hot water detected by the temperature sensor 5 is equal to or lower than a predetermined set temperature, the hot water flowing through the hot water supply pipe 4 is discarded, and when the temperature of the hot water is higher than the predetermined set temperature, the hot water flowing through the hot water supply pipe 4 is removed. It is characterized in that hot water supply switching means 6 for switching to supply to hot water nozzle 2 is provided in hot water supply pipe line 4. As a result, only hot water having a temperature equal to or higher than a predetermined temperature can be sprinkled on the floor of the washing place 1.

[0006] It is also preferable that a timer for setting the time of sprinkling the hot water to be sprinkled on the floor of the washing place 1 through the hot water nozzle 2 is provided in the above apparatus. Thereby, a certain amount of hot water can be sprinkled on the floor of the washing place 1.

The hot water supply switching means 6 provided in the hot water supply conduit 4 is a three-way switching valve 6a.
a is provided in front of the sprinkler nozzle 2 in the washing place 1 and the waste water pipe 7 whose end is located in the vicinity of the drain port 10 of the washing place 1 is branched from the three-way switching valve 6a so that dead water or a predetermined set temperature or less is obtained. Of hot water can flow through the drain port 10 of the washing place 1.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION A floor heating device according to the present invention is a hot water floor heating device, and a hot water supply device 3 and a hot water nozzle 2 installed outside a bathroom as shown in FIG. It is connected via Road 4. The hot water nozzle 2 is provided on the floor at one end of the washing room 1 in the bathroom, and the hot water is sprayed from the one end side of the washing room 1 to the other end side and spreads radially on the floor surface of the washing room 1. The floor surface of the washing place 1 can be uniformly warmed by spraying water. Washing area 1 at one end of the floor of washing area 1
A drain port 10 for draining the water is provided, and the water in the washing station 1 is collected at the drain port 10 and can be drained by a water gradient on the floor surface of the washing station 1. The drain port 10 and the sprinkler nozzle 2 have a positional relationship such that they are adjacent to each other at one end of the washing place 1. Also, at one end of the washing area 1, the drain port 10 is provided.
A washing faucet 16 is mounted above the tub, and a tub faucet 15 is also mounted on one end of the bathtub 8. Water heater 3
The hot water supply pipe 4 is supplied with a hot water supply pipe 4 from a bathtub pipe 11 leading to a bathtub faucet 15 and a washing pipe 1 leading to a washing tap 16.
Both are connected. A flow path opening / closing valve 9 is provided in the hot water supply line 4 at a position beyond a branch point where the bathtub line 11 and the washing line 12 are branched. In order to measure the temperature of the hot water flowing through the hot water supply line 4, a temperature sensor 5 is provided in the hot water supply line 4 downstream of the flow path opening / closing valve 9. The temperature sensor 5 is located as close as possible to the spray nozzle 2 of the hot water supply line 4 so as to suppress the error between the actual temperature of the hot water sprinkled on the floor of the washing area 1 and the temperature of the hot water flowing through the hot water supply line 4. It is desirable to provide. Further, a three-way switching valve 6 a as an example of hot water supply switching means 6 is disposed in the hot water supply pipe 4 at a position before the hot water spray nozzle 2, and the three-way switching valve 6 a is located in the washing place 1. By switching the three-way switching valve 6a, the hot water supply pipe 4 and the spray nozzle 2 can be communicated, or the branched waste water pipe 7 and the hot water supply pipe 4 can be connected. . The tip of the hot water pipe 7 is located at the drain port 10 or in the vicinity of the drain port 10. The control unit 13 controls the opening / closing control of the flow passage opening / closing valve 9 and the switching control of the three-way switching valve 6a. The temperature of the hot water supply pipe 4 is detected by the temperature sensor 5, but when the temperature of the hot water flowing through the hot water supply pipe 4 is lower than a predetermined set temperature, the hot water supply pipe 4 and the hot water discharge pipe 7 communicate with each other and the hot water discharge pipe. When the hot water flowing through the hot water supply line 4 is higher than a predetermined set temperature, the hot water supply line 4 communicates with the hot water spray nozzle 2 and the hot water nozzle 2
The three-way switching valve 6a can be switched so that hot water is sprinkled from above. Further, the control unit 13 is provided with a timer for setting the time for sprinkling hot water from the hot water nozzle 2.
This timer measures the time from the start of watering from the watering nozzle 2 and closes the passage opening / closing valve 9 when a predetermined time has elapsed. Further, a hot water switch 14 is provided to operate when hot water is sprayed from the hot water nozzle 2 to start floor heating. At this time, since the purpose of the apparatus is to warm the floor of the washing room 1 in the bathroom before taking a bath, it is desirable to provide the sprinkling switch 14 outside the bathroom, for example, in a dressing room.

FIG. 2 shows an operation flowchart of the floor heating device. First, in order to warm the floor of the washing room 1 before entering the bathroom, the sprinkler switch 14 is turned on to start the floor heating device. Then, the flow path switching valve 9 is opened, and the flow path is switched so that the three-way switching valve 6a is drained to the waste water pipe 7 side. When the flow opening / closing valve 9 is opened, hot water flows downstream from the flow opening / closing valve 9, and the temperature of the hot water is measured by a temperature sensor 5 provided in the hot water supply pipe 4. Temperature sensor 5
The control unit 13 determines whether or not the hot water has reached a predetermined set temperature at the temperature measured by the above, and when the hot water has not reached the predetermined set temperature, the flow path switching of the three-way switching valve 6a is not performed, The waste water is discharged to the drainage port 10 of the washing place 1 through the drainage pipe 7 located near the drainage port 10 of the washing place 1. When the temperature measured by the temperature sensor 5 exceeds a predetermined set temperature, the control unit 13 switches the flow path to the sprinkler nozzle 2 side by the three-way switching valve 6a, and the hot water having the predetermined set temperature or higher is used. Is sprayed radially on the floor of the washing place 1 via the spray nozzle 2. Here, it is appropriate that the predetermined temperature is about 40 ° C., the flow rate is 4 to 8 liters / minute, and the hot water supply time is 1 to 2 minutes. Further, when the flow path of the three-way switching valve 6a is switched to the sprinkler nozzle 2 side, a timer installed in the control unit 13 is operated. After a predetermined time elapses after the operation of the timer, the flow opening / closing valve 9 is closed, and a predetermined amount of hot water or more and a certain amount of hot water can be supplied to the washing place 1 with hot water having a predetermined temperature or higher.
When the flow opening / closing valve 9 is closed, no hot water flows into the hot water supply pipe line 4 downstream of the flow opening / closing valve 9, and the floor heating device ends its operation.

[0010]

According to the first aspect of the present invention, a temperature sensor for detecting the temperature of hot water flowing through the hot water supply pipe is disposed in the hot water supply pipe, and when the temperature of the hot water detected by the temperature sensor is lower than a predetermined set temperature, the hot water supply pipe is provided. Hot water supply switching means is provided in the hot water supply pipe to switch the hot water flowing through the hot water supply pipe to the hot water spray nozzle when the temperature of the hot water is higher than a predetermined set temperature. Therefore, hot water having a temperature equal to or lower than a predetermined set temperature, for example, dead water remaining in the pipeline or hot water that has not been sufficiently heated by a water heater can be drained away. The floor of the washing area will not be cooled down, and the amount and temperature of dead water in the pipe due to the length of the pipe from the water heater, seasonal fluctuations, and differences in the elapsed time since last use will be affected. Not It can be obtained efficiently its effects compared to the floor heating device.

According to the second aspect of the present invention, since a timer for setting a time period of the hot water to be supplied to the hot water spray nozzle is provided, a predetermined amount of hot water having a predetermined temperature or more can be sprayed. Variation can be suppressed.

According to the third aspect, the hot water supply switching means provided in the hot water supply pipe is a three-way switching valve, and the three-way switching valve is provided in the washing area before the hot water spray nozzle. Water that cannot be heated can be discharged into a bathroom that is designed to use water.

According to the fourth aspect of the present invention, a drain pipe for draining hot water having a temperature equal to or lower than a predetermined set temperature is branched from a three-way switching valve, and the end of the drain pipe is located at or near a drain port of a washing place. Water that cannot be sprinkled for the purpose of (1) can be flowed through a drain provided in advance in a bathroom washing area, and there is no need to make a new drain pipe.

[Brief description of the drawings]

FIG. 1 is a system diagram of a floor heating device of the present invention.

FIG. 2 is an operation flowchart of the floor heating device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Washing place 2 Sprinkler nozzle 3 Water heater 4 Hot water supply line 5 Temperature sensor 6 Hot water supply switching means 6a Three-way switching valve 7 Waste water pipe 10 Drain outlet

Claims (4)

[Claims] 1. A water spray nozzle for spraying hot water to warm the floor of a washing room is provided in a washing room of a bathroom, and a hot water supply device and a hot water nozzle are connected through a hot water supply line to supply hot water from the water heater to the hot water nozzle. A temperature sensor for detecting the temperature of the hot water flowing through the hot water supply pipe is provided in the hot water supply pipe, and when the temperature of the hot water detected by the temperature sensor is equal to or lower than a predetermined set temperature, the hot water flowing through the hot water supply pipe is discarded and the hot water is discarded. A hot-water supply floor heating device, wherein hot-water supply switching means for switching hot water flowing through the hot-water supply conduit to the hot-water supply nozzle when the temperature of the hot water is equal to or higher than a predetermined set temperature is provided in the hot-water supply conduit. 2. The hot water floor heating apparatus according to claim 1, further comprising a timer for setting a time for hot water to be supplied to the hot water nozzle. 3. The hot water supply switching means provided in the hot water supply conduit is a three-way switching valve, and the three-way switching valve is provided in the washing area before the hot water spray nozzle.
Or the hot water floor heating device according to 2. 4. A drain pipe for draining hot water below a predetermined set temperature is branched from a three-way switching valve, and an end of the drain pipe is located at or near a drain port of a washing place. Item 3. A hot water floor heating device according to Item 3.