JP2015172455A - Floor surface heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a floor surface heater capable of preventing excessive sprinkling of hot water, relatively easy to construct, and capable of ensuring that the temperature of a floor surface can rise to a predetermined temperature by sprinkling the hot water irrespectively of change of the seasons.SOLUTION: A floor surface heater 10 sprinkles hot water that is a mixture of hot water and cold water to a floor surface of a bathroom and heats the floor surface. This floor surface heater 10 comprises: a temperature detector 43 and a flow detector 19 detecting a temperature and a flow volume of the sprinkled hot water, respectively; and a control unit 31 calculating sprinkling time for which a predetermined quantity of heat is applied to the floor surface by sprinkling of the hot water on the basis of detected values of the two detectors 43 and 19, and stopping sprinkling the hot water at the passage of this sprinkling time after starting sprinkling the hot water.

Description

  The present invention relates to a floor surface heating device that heats a floor surface by spraying hot water mixed with hot water on a floor surface that is a bathroom washroom.

  Conventionally, as this kind of floor surface heating device, for example, as disclosed in Patent Document 1, a hot water nozzle provided at a bathroom counter, a water heater disposed outside the bathroom, and the water heater What is provided with a hot water supply pipe and an on-off valve for leading hot water from the hot water to a sprinkling nozzle is known. In this case, the hot water supplied from the water heater is usually mixed with water supplied through a water supply pipe such as a water pipe and adjusted to a hot water of a predetermined temperature, and this hot water is sprayed from the sprinkling nozzle onto the floor surface. The floor is heated.

  And in such a floor surface heating apparatus, as described also in patent document 1, in order to prevent excessive dispersion | spreading of hot water, when predetermined time passes from the spraying start time of hot water, A method of terminating the spraying is usually adopted.

  Patent Document 2 describes a method in which a temperature sensor that detects the temperature of the floor surface is provided on the back surface of the bathroom floor surface, and the spraying of hot water is terminated when the temperature detected by the temperature sensor reaches a predetermined temperature. Has been.

JP 2001-65897 A JP-A-3-217725

  However, the conventional spraying termination method described in Patent Document 1 has the following drawbacks. That is, the time required to raise the temperature of the floor surface to a predetermined temperature by spraying hot water changes according to seasonal changes and the like. However, in the thing of patent document 1, since the dispersion | spreading time of hot water is uniformly specified as predetermined time, the temperature of a floor surface cannot be reliably raised to predetermined temperature according to a seasonal change etc. Is the actual situation. Therefore, it is conceivable that the user can change and adjust the spraying time of hot water, but it is troublesome and inconvenient for the user himself to change and adjust the spraying time of hot water each time according to the seasonal change etc. There is a drawback.

  On the other hand, in the thing of patent document 2, the operation | work which attaches a temperature sensor to the back surface of a bathroom floor surface, or wires the cable connected to this temperature sensor on the back surface of a bathroom floor surface is troublesome. There are drawbacks such as long construction time and high construction costs.

  The present invention has been made in view of such various points, and the problem is that the excessive spraying of hot water is prevented, the construction is relatively easy, and the floor surface is spread by spraying hot water regardless of seasonal changes. An object of the present invention is to provide a floor surface heating apparatus capable of reliably raising the temperature to a predetermined temperature.

  In order to solve the above-mentioned problems, the present invention is a floor surface heating device that heats a floor surface by spraying hot water mixed with hot water on the floor surface of a bathroom. Based on the detected temperature detector and flow rate detector, and the detection values of both detectors, the spraying time in which a predetermined amount of heat is applied to the floor surface by spraying of hot water is calculated, and this spraying time after the start of spraying of hot water And a control unit that terminates spraying when the time elapses.

  Here, the predetermined amount of heat is the amount of heat necessary to raise the temperature of the floor surface by a predetermined temperature, and the amount of heat W [kJ] at this time is expressed by the following equation (1).

W [kJ] = α × T [° C.] × 4.2 [kJ / kg · ° C.] × Q [kg / min] × s [min] (1)
However, (alpha) is the thermal efficiency which raises the temperature of a floor surface, T is the temperature of the hot water sprayed, Q is the flow volume of the hot water sprayed, s is spraying time.

  Further, it is preferable that a water temperature detector for detecting the temperature of the supplied water is further provided, and the control unit is provided so as to adjust the spraying time according to the detection value of the water temperature detector.

  Furthermore, it is preferable that the control unit has a calendar function and is provided so as to adjust the spraying time according to the date of the calendar function.

  In the floor surface heating device of the present invention, the temperature and flow rate of hot water to be sprayed are detected by detectors, and a predetermined amount of heat is given to the floor surface by spraying of hot water based on the detection values of both detectors. The spraying time is calculated, and spraying is terminated when the spraying time has elapsed after the spraying of hot water starts. For this reason, excessive spraying of hot water can be prevented, and the temperature of the floor surface can be reliably increased to a predetermined temperature by spraying hot water regardless of seasonal changes.

  Moreover, both the detectors are attached to a pipeline through which hot water flows, and the installation work is performed together with the piping work of the pipeline. For this reason, it does not require the troublesome work of attaching a temperature sensor to the back surface of the bathroom floor as in the past, or wiring the cable connected to this temperature sensor to the back surface of the bathroom floor surface, and the installation time is accordingly. It is short and the construction cost is low.

FIG. 1 is a block configuration diagram showing the overall configuration of a bathroom water discharger having the function of a floor surface heating device according to an embodiment of the present invention. FIG. 2 is a flowchart showing the control contents of the controller.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments that are modes for carrying out the present invention will be described with reference to the drawings.

  FIG. 1 shows an overall configuration of a bathroom water discharge device 10 having the function of a floor surface heating device according to an embodiment of the present invention. The bathroom water discharge device 10 is an electronic faucet type of a hot and cold water mixing type, and includes a water supply pipe 1 for supplying water such as tap water and a hot water supply pipe 2 for supplying hot water from a water heater (not shown). And a mixing pipe 4 connected to the water supply pipe 1 and the hot water supply pipe 2 via a bifurcated mixing section 3. The mixing pipe 4 is connected to the three water discharge parts 6, 7, and 8 through the flow path switching valve 5, and hot water mixed with hot water and water is discharged from any one water discharge part. Yes.

  The water supply pipe 1 is provided with a manual open / close stop valve 11, a check valve 12 and an electric flow rate adjusting valve 13 in order from the upstream side, and the hot water supply pipe 2 is also provided with a manual open / close type in order from the upstream side. A water stop valve 14, a check valve 15, and an electric flow rate adjusting valve 16 are provided. The hot water supply pipe 2 is provided with a flow rate sensor 17 that detects the flow rate of hot water flowing through the hot water supply pipe 2. The mixing pipe 4 is provided with an electromagnetic stop valve 18 and a flow rate sensor 19 as a flow rate detector for detecting the flow rate of hot water flowing in the mixing pipe 4.

  Of the three water discharge units 6 to 8, the water discharge unit 6 is provided in a predetermined shape in the bathroom and in an appropriate shape in order to heat the floor by spraying hot water on the floor which is a washing place in the bathroom. It is for floor surface heating. The water discharger 7 is a shower head provided to supply hot water to the body or wash the body on the washroom in the bathroom, and the water discharger 8 is a faucet for the washroom provided in the bathroom washroom. It is. In the following description, in order to distinguish the three water discharge units 6 to 8, the water discharge unit 6 is referred to as a warm water discharge unit, the water discharge unit 7 is referred to as a shower head, and the water discharge unit 8 is referred to as a faucet.

  The flow path switching valve 5 is an electric type for guiding hot water of a predetermined temperature supplied from the mixing pipe 4 on the hot water supply side to one of the warm water spouting unit 6, the shower head 7 and the faucet 8. Consists of a four-way valve.

  The flow rate adjusting valves 13 and 16, the water stop valve 18, and the flow path switching valve 5 are all controlled by the controller 31 that is a control unit of the bathroom water discharge device 10 (that is, the control unit of the floor surface heating device in the present invention). The operation is controlled. The controller 31 is composed of a microcomputer or the like, and a power circuit 32 is connected to the controller 31 via a power cable, and a display / operation unit 33 is connected via a communication cable. The display / operation unit 33 is for demonstrating an operation function and a display function when the user sets the temperature of hot water or selects one of the three water discharge units 6 to 8. is there.

  Three thermistors 41, 42 and 43 are connected to the controller 31 so as to be able to exchange signals. The thermistor 41 is a water temperature detector that detects the temperature of water flowing in the water supply pipe 1, the thermistor 42 is a temperature detector that detects the temperature of hot water flowing in the hot water supply pipe 2, and the thermistor 43 is a mixing pipe. 4 is a temperature detector that detects the temperature of hot and cold water flowing through the inside. For this reason, the controller 31 can recognize the temperature of water supplied through the water supply pipe 1, the temperature of hot water supplied through the hot water supply pipe 2, and the temperature of hot water discharged through the mixing pipe 4. In FIG. 1, 44 and 45 are drain plugs.

  Next, the control contents when the controller 31 is heated, particularly when the floor surface is heated by spraying hot water from the warm water discharger 6 on the floor surface of the bathroom, will be described with reference to the flowchart shown in FIG.

  In FIG. 2, after waiting for the user to turn on the hot water switch at the display / operation unit 33 in step S1, the flow path switching valve 5 is switched to the faucet 8 side in step S2, and the water stop valve 18 is switched. open. In step S3, the water heater is operated to start hot water supply. At the start of this hot water supply, the hot water flowing through the mixing pipe 4 is discharged from the faucet 8 perpendicularly to the drain outlet on the floor surface or the vicinity thereof, not the warm water discharger 6.

  Subsequently, in step S4, the process waits until the temperature of the hot water flowing in the mixing pipe 4 reaches a set temperature, for example, 40 ° C. or higher, based on the detection signal of the thermistor 43. Thereafter, in step S5, the flow path switching valve 5 is switched to the warm water discharger 6 side. In step S6, based on the temperature of the hot water and the flow rate of hot water flowing through the mixing pipe 4 detected by the flow rate sensor 19, Set the spraying time that the amount of heat is given to the floor by spraying hot water. Here, the predetermined amount of heat is, for example, the amount of heat necessary to raise the temperature of the floor surface to a predetermined temperature, and the amount of heat W [kJ] at this time is expressed by the following equation (1).

W [kJ] = α × T [° C.] × 4.2 [kJ / kg · ° C.] × Q [kg / min] × s [min] (1)
However, (alpha) is the thermal efficiency which raises the temperature of a floor surface, T is the temperature of the hot water sprayed, Q is the flow volume of the hot water sprayed, s is spraying time.

  Next, the spraying time is adjusted in step S7. The adjustment of the spraying time is, for example, calculating the difference between the temperature of the water flowing through the water supply pipe 1 detected by the thermistor 41 and the reference water temperature, and extending the spraying time as the difference is negative and large. Further, when the controller 31 has a calendar function, the spraying time is set longer in the winter than in the summer, for example, according to the date of the calendar function.

  Subsequently, after a timer built in the controller 31 is started in step S8, it waits for the spraying time to elapse from the start of spraying of hot water in step S9. And when spraying time passes, while stopping hot water supply by step S10, hot water supply is complete | finished, the water stop valve 18 is closed by step S11, and control is complete | finished.

  Accordingly, in the bathroom water discharge device 10, when the hot water is sprayed from the warm water spouting section 6 to the floor surface to warm the floor surface, the temperature and flow rate of the hot water sprayed are detected by the thermistor 43 and the flow sensor 19, respectively. . Based on the detection values of the detectors 43 and 19, the controller 31 calculates a spraying time in which a predetermined amount of heat is applied to the floor surface by spraying hot water, and when the spraying time has elapsed after the spraying of hot water has started. The spraying is finished. For this reason, excessive spraying of hot water can be prevented, and the temperature of the floor surface can be reliably increased to a predetermined temperature by spraying hot water regardless of seasonal changes.

  Moreover, the detectors 43 and 19 are attached to the mixing tube 4 through which hot water flows, and the attaching operation is performed together with the piping operation of the mixing tube 4 and the like. For this reason, it does not require the troublesome work of attaching a temperature sensor to the back surface of the bathroom floor as in the past, or wiring the cable connected to this temperature sensor to the back surface of the bathroom floor surface, and the installation time is accordingly. It is short and the construction cost is low.

  In particular, when the predetermined amount of heat is the amount of heat necessary for raising the temperature of the floor surface by a predetermined temperature, the amount of heat W [kJ] at this time is expressed by the following equation (1).

W [kJ] = α × T [° C.] × 4.2 [kJ / kg · ° C.] × Q [kg / min] × s [min] (1)
However, (alpha) is the thermal efficiency which raises the temperature of a floor surface, T is the temperature of the hot water sprayed, Q is the flow volume of the hot water sprayed, s is spraying time.

  In the formula (1), if the heat quantity W is set, the spraying time s can be easily calculated, so that there is also an advantage that it is advantageous for implementation.

  The controller 31 adjusts the spraying time according to the temperature of the water flowing through the water supply pipe 1 detected by the thermistor 41 or the date of the calendar function. The temperature can be more reliably increased to a predetermined temperature.

  In addition, this invention is not limited to the said embodiment, A various other form is included. For example, in the said embodiment, although the case where it applied to the water discharging apparatus 10 for bathrooms provided with the three water discharging parts 6-8 was described, this invention is not limited to the number of water discharging parts, The hot water which mixed hot water and water Can be widely applied to a floor surface heating device that heats the floor surface by spraying the floor surface of the bathroom.

  Moreover, in the said embodiment, although the case where it discharges from the faucet 8 to the drain outlet of the floor surface in the vicinity at the time of the hot water supply start of step S3 in FIG. 2 was described, the flow path switching valve 5 is heated from the time of the hot water supply start. You may switch to the water discharge part 6 side, and may discharge. In this case, it waits without starting the timer until the temperature of the hot water flowing in the mixing tube 4 reaches a set temperature, for example, 40 ° C. or more based on the detection signal of the thermistor 43, and starts the timer after reaching the set temperature. And control.

DESCRIPTION OF SYMBOLS 1 Water supply pipe 2 Hot water supply pipe 4 Mixing pipe 6 Water discharge part (warming water discharge part)
10 Bathroom water discharge device (floor surface heating device)
19 Flow rate sensor (flow rate detector)
31 Controller (control unit)
41 Thermistor (Water temperature detector)
43 Thermistor (Temperature detector)

Claims (4)

A floor surface heating device that heats the floor surface by spraying hot water mixed with hot water on the floor surface of the bathroom,
A temperature detector and a flow rate detector for detecting the temperature and flow rate of hot water to be sprayed, respectively;
Based on the detection values of both detectors, a control unit that calculates a spraying time in which a predetermined amount of heat is applied to the floor by spraying of hot water and ends spraying when the spraying time has elapsed after the spraying of hot water starts. And a floor surface heating device. The predetermined amount of heat is the amount of heat necessary to raise the temperature of the floor surface to a predetermined temperature, and the amount of heat W [kJ] at this time is expressed by the following equation (1).
W [kJ] = α × T [° C.] × 4.2 [kJ / kg · ° C.] × Q [kg / min] × s [min] (1)
However, (alpha) is the thermal efficiency which raises the temperature of a floor surface, T is the temperature of the hot water sprayed, Q is the flow volume of the hot water sprayed, s is spraying time, The floor surface heating apparatus of Claim 1.   The floor according to claim 1 or 2, further comprising a water temperature detector for detecting the temperature of the supplied water, wherein the control unit is provided so as to adjust a spraying time according to a detection value of the water temperature detector. Surface heating device.   The floor heating apparatus according to claim 1 or 2, wherein the control unit has a calendar function and is provided so as to adjust a spraying time according to a date of the calendar function.

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