JP2008286416A - Hot water storage type water heater - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem wherein it is generally required that a mist hot water supply line and a mist water supply line are installed to reach a hot press control device installed on a ceiling of a bathroom. <P>SOLUTION: A mist temperature control means provided on a water heater side mixes beforehand hot water in a hot water storage tank 7 with water so that temperature detected by a mist temperature sensor 15 becomes desired one by controlling a mist mixing valve 13 and then, supplies the hot water to a mist terminal 2. Therefore, it is not required to install a mist temperature control means such as a mixing valve on the mist terminal 2 side, and only one mist hot water supply line is required as piping to the mist terminal 2. Due to this structure, construction performance of the mist terminal 2 which is generally installed under the roof of a bathroom can be drastically improved. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a hot water storage type water heater that can be connected to a mist generator.

  Conventionally, hot water storage type water heaters with this kind of mist function are generally used in combination with a general water heater and a mist terminal, and hot water is sprayed from the water heater into the bathroom from the mist terminal. Is realized.

  In order to further improve comfort, hot water from a water heater and water from a water supply pipe are mixed on the mist terminal side to perform mist spraying at an optimum temperature. (For example, refer to Patent Document 1).

FIG. 4 shows an installation configuration of a conventional hot water storage type hot water heater with a mist function described in Patent Document 1 and a mist terminal. FIG. 5 shows the functional configuration of the hot water storage type hot water heater with mist function and mist terminal shown in FIG. As shown in FIG. 4, a heat pump water heater 101, a mist terminal (mist generator) 102, a temperature control apparatus 103 that controls the temperature of hot water supplied to the mist terminal 102 and the hot water supply pressure (the features of the present invention). (Shown in a range suitable for representation). Further, as shown in FIG. 4, hot water from the mist hot water supply pipe 105 and water from the mist water supply pipe 106 are mixed by a mixing valve 104 built in the temperature / pressure control device 103 to supply hot water of appropriate temperature to the mist terminal 102. It is like that.
JP 2006-322893 A

  In the conventional configuration, after mixing hot water and water, water is mixed immediately before the mist generator, so that the hot water ejected from the mist generator can be kept at an appropriate temperature. It has become. However, as shown in FIG. 5, in the case of realizing the mist generating device with the above-described conventional configuration, generally, the temperature / pressure control device 103 must be attached to the ceiling of the bathroom, and further up to the temperature / pressure control device. Since the mist water supply pipe 106 has to be piped, there has been a problem that the equipment becomes large.

  This invention solves the said conventional subject, and it aims at providing the hot water storage type water heater which implement | achieved the mist function, without enlarging an installation.

  In order to solve the above-described conventional problems, a hot water storage type water heater of the present invention includes a hot water storage tank, a water supply pipe for supplying water to the hot water storage tank, and a boiling means for boiling water in the hot water storage tank to a predetermined temperature. , A hot water supply pipe for taking out hot water in the hot water storage tank boiled by the boiling means, a mist mixing valve for mixing hot water from the hot water supply pipe and water from the water supply pipe, and spraying hot water in the form of a mist in the bathroom A mist terminal, a mist hot water pipe for supplying hot water mixed in the mist mixing valve to the mist terminal, a mist temperature sensor provided on the mist mixing valve side of the mist hot water pipe, and a mist temperature sensor Mist hot water temperature control means for controlling the mist mixing valve so that the temperature becomes the target temperature and switching the target temperature based on information from the mist terminal, and the mist terminal and the mist hot water temperature. A communication means for communicating information between the control means, the mist hot water temperature control means is characterized in that to perform a predetermined safety operation until communication from the mist terminal is established.

  As a result, in the pipe from the mist mixing valve to the mist terminal, even if a temperature drop due to heat dissipation occurs while hot water is being supplied, the hot water mixed by the mist mixing valve based on the temperature information from the mist terminal In order to select the temperature, hot water of appropriate temperature can be ejected from the mist terminal in the form of mist, and the communication means is composed of two wires, so the necessary information can be transmitted with a simple communication procedure. The hot water temperature control means performs a safe operation until communication of the communication means is established, and it is possible to ensure safety by detecting an abnormality with respect to the failure of the communication means.

  The hot water storage type water heater of the present invention can provide a hot water storage type water heater that realizes a mist function without increasing the size of the equipment.

  A hot water storage type water heater according to a first aspect of the present invention includes a hot water storage tank, a water supply pipe for supplying water to the hot water storage tank, a boiling means for boiling water in the hot water storage tank to a predetermined temperature, and a boiling means by the boiling means. A hot water supply pipe for taking out hot water from the hot water storage tank, a mist mixing valve for mixing hot water from the hot water supply pipe and water from the water supply pipe, a mist terminal for spraying hot water in the form of a mist in the bathroom, and the mist mixing A mist hot water supply pipe for supplying hot water mixed by a valve to the mist terminal; a mist temperature sensor provided on the mist mixing valve side of the mist hot water supply pipe; and the temperature of the mist temperature sensor is set to a target temperature. Mist hot water temperature control means for controlling the mist mixing valve and switching the target temperature based on information from the mist terminal, and for communicating information between the mist terminal and the mist hot water temperature control means. The mist hot water temperature control means does not need to provide mist temperature optimization means such as a mixing valve on the mist terminal side by performing a predetermined safety operation until communication from the mist terminal is established, The piping up to the mist terminal is composed of one mist hot water supply pipe, and the installation work of the mist terminal behind the bathroom ceiling, which is difficult to construct, can be greatly simplified, and the construction can be saved. Further, the mist hot water temperature control means performs a safe operation until the communication of the communication means is established, and it is possible to ensure safety by detecting an abnormality with respect to the failure of the communication means.

  In the hot water storage type hot water heater of the second invention, particularly in the first invention, the predetermined safe operation is safe by setting the target temperature of the mist hot water temperature control means to be the safest in terms of temperature. Can be secured.

  In the hot water storage type water heater of the third invention, in particular, in the first or second invention, the mist hot water temperature control means displays an error display when the communication is not established within a predetermined time, thereby indicating the safe operation as an error display. Can be notified.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a configuration diagram of a hot water storage type hot water heater with a mist function in the first embodiment of the present invention, FIG. 2 is a circuit diagram of communication means for transmitting information between a mist terminal and mist hot water temperature control means, and FIG. FIG. 4 shows a waveform diagram of initial communication of a communication means signal line.

  In FIG. 1, water is supplied to a hot water storage tank 7 from a water supply pipe 8, water in the lower part of the hot water storage tank 7 is circulated to a heat source unit 10 by a boiling circulation pump 9, and overheated hot water is supplied to the hot water storage tank 7 via a three-way valve 11. The boiling means is configured to return to the upper part.

The heat source unit 10 is configured to collect atmospheric heat using a heat pump, exchange heat with circulating water from the hot water storage tank 7 and heat it. Further, while the heat source unit 10 cannot start heating the circulating water sufficiently immediately after starting, the three-way valve 11 is switched to return the unheated circulating water to the lower part of the hot water storage tank 7.

  The hot water heated and stored by the boiling means is mixed with water from the water supply pipe 8 from the upper part of the hot water storage tank 7 through the hot water supply pipe 12 through the hot water supply pipe 12 and further to the mist terminal 2 through the mist hot water supply pipe 14. Supplied. At this time, the mist mixing valve 13 is controlled by the mist temperature control means so that the hot water temperature detected by the mist temperature sensor 15 becomes a predetermined target value.

  The mist temperature control means outputs a drive output according to Table 1 to the stepping motor driving the mist mixing valve 13.

次に図２によりミスト端末とミスト湯温制御手段の間で情報を伝える通信手段について説明する。通信ラインはコモンライン１６、信号ライン１７、信号ライン１８とから構成され、信号ライン１７、１８は抵抗１９でＤＣ電源２０にプルアップされ、またコモンライン１６は受信側で接地されている。

Next, communication means for transmitting information between the mist terminal and the mist hot water temperature control means will be described with reference to FIG. The communication line includes a common line 16, a signal line 17, and a signal line 18. The signal lines 17 and 18 are pulled up to a DC power source 20 by a resistor 19, and the common line 16 is grounded on the receiving side.

  On the transmission side, the signal lines 17 and 18 and the common line 16 are short-circuited by the transmission signals 21 and 22 via the photocoupler 23, respectively. That is, if Hi is input to the transmission signal 21, Lo is output to the reception signal 24. Conversely, Hi is output to the reception signal 24 if Lo is input to the transmission signal 21.

  If Hi is input to the transmission signal 22, Lo is output to the reception signal 25. Conversely, Hi is output to the reception signal 25 if Lo is input to the transmission signal 22.

  When the power is turned on, the mist temperature control means sets the target temperature to water and waits for a signal from the mist terminal. The mist terminal transmits the initial signal of FIG. 3 to the signal line 17 and the signal line 18, and the mist temperature control means receives the signal to establish communication and thereafter perform the operations shown in Table 2. When the signal of FIG. 3 cannot be received, the mist target temperature remains water, and when the signal of FIG. 3 cannot be received even after a predetermined time has elapsed, an error display (not shown) is displayed.

  Next, the operation of the mist temperature control means will be described with reference to Table 2. When the mist terminal 2 on the transmission side is mist operation OFF (Table 2 No. 1), both the signal line 17 and the signal line 18 send Lo. At this time, the mist hot water temperature control means on the receiving side sets water as the temperature control target value, and the mist mixing valve 13 is fully opened.

  When the mist operation is turned on, the mist terminal 2 (No. 2 in Table 2) sends Lo to the signal line 17 and Hi to the signal line 18. On the other hand, the mist temperature control means sets 49 ° C. as the temperature control target value, and controls the mist mixing valve 13 according to the control values in Table 1 so that the mist temperature sensor 15 becomes the temperature control target value.

When the mist hot water temperature detected by the mist terminal 2 during the mist operation continues for 3 minutes and is lower than 47 ° C. (No. 3 in Table 2), the mist terminal 2 sends Hi to the signal line 17 and Lo to the signal line 18. On the other hand, the mist temperature control means sets 51 ° C. as the temperature control target value, and controls the mist mixing valve 13 according to the control values in Table 1 so that the mist temperature sensor 15 becomes the temperature control target value.
When the mist hot water temperature detected by the mist terminal 2 during the mist operation continues for 3 minutes and is 50 ° C. or higher, the mist terminal 2 sends Lo to the signal line 17 and Hi to the signal line 18. On the other hand, the mist temperature control means sets 49 ° C. as the temperature control target value, and controls the mist mixing valve 13 according to the control values in Table 1 so that the mist temperature sensor 15 becomes the temperature control target value. .

以上のように構成されたミスト機能付貯湯式給湯機について、以下その動作、作用を説明する。

The operation and action of the hot water storage type hot water heater with the mist function configured as described above will be described below.

  First, the mist temperature control means provided on the hot water supply side of the hot water storage tank 7 controls the mist mixing valve 13 and mixes with water in advance so that the temperature detected by the mist temperature sensor 15 becomes an appropriate temperature. Since hot water is supplied, there is no need to have a mist temperature control means such as a mixing valve on the mist terminal 2 side, and since only one mist hot water supply pipe is required for the mist terminal 2, it is generally installed behind the ceiling of the bathroom. The workability of a typical mist terminal is greatly improved.

  In addition, since the temperature control target value of the mist temperature control means can be changed via the communication means, the hot water temperature is detected on the mist terminal 2 side, and the mist hot water supply is not reached due to the influence of the piping and the outside air temperature. The temperature can be compensated and the optimum mist performance can be realized.

  When the power is turned on, the abnormality of the signal line 17 and the signal line 18 can be detected by detecting the initial signal of the signal line 17 and the signal line 18 on the hot water storage type hot water heater with mist function (reception side).

As an embodiment of the circuit configuration of the communication means, the communication line is pulled up via a resistor on the reception side, the common line is grounded, and the communication line and the common line are short-circuited by a switch element on the transmission side. The communication line is grounded via a resistor on the reception side, the common line is pulled up, and the signal is transmitted by short-circuiting the communication line and the common line with a switch element on the transmission side. Even with this method, the same effect can be realized by inverting the logic of the signal. Further, the same effect can be realized by confirming the communication abnormality not by static drive but also by a pulse signal or serial communication method. Although the initial signal is detected when the power is turned on, it may be checked every time the operation is started. In that case, the initial communication cannot be detected and No. 2, No. It can be detected by the fact that the signal No. 3 has continued for more than a predetermined time.

  As mentioned above, since the hot water storage type hot water heater with mist function according to the present invention can supply hot water to the mist terminal via the mist hot water supply pipe, it has a mist function having a mist function of spraying hot water in the bathroom in the form of a mist. Applicable to applications such as hot water storage hot water heaters with functions.

The block diagram of the hot water storage type hot water heater with a mist function in Embodiment 1 of this invention The circuit diagram of the communication means which conveys information between the mist terminal and mist hot water temperature control means in Embodiment 1 of this invention Waveform diagram of pulse signal of communication means signal line in Embodiment 1 of the present invention Installation configuration diagram of a conventional hot water storage water heater with mist function Functional configuration diagram of a conventional hot water storage water heater with mist function

Explanation of symbols

2 Mist terminal 7 Hot water storage tank 8 Water supply pipe 9 Boiling circulation pump 10 Heat source unit 11 Three-way valve 12 Hot water supply pipe 13 Mist mixing valve 14 Mist hot water supply pipe 15 Mist temperature sensor 16 Common line 17 Signal line 18 Signal line 19 Resistance 20 DC power supply 21 Transmission signal 22 Transmission signal 23 Photocoupler 24 Reception signal 25 Reception signal

Claims (3)

A hot water storage tank, a water supply pipe for supplying water to the hot water storage tank, a boiling means for boiling water in the hot water storage tank to a predetermined temperature, and a hot water supply pipe for taking out hot water in the hot water tank boiled by the boiling means , A mist mixing valve for mixing hot water from the hot water supply pipe and water from the water supply pipe, a mist terminal for spraying hot water in a mist form in the bathroom, and hot water mixed by the mist mixing valve to the mist terminal A mist hot water supply pipe for supplying hot water, a mist temperature sensor provided on the mist mixing valve side of the mist hot water supply pipe, and controlling the mist mixing valve so that the temperature of the mist temperature sensor becomes a target temperature, and from a mist terminal Mist hot water temperature control means for switching the target temperature with information, and communication means for transmitting information between the mist terminal and the mist hot water temperature control means, The control means storage type water heater and performing predetermined safety operation until communication from the mist terminal is established. 2. The hot water storage type hot water supply apparatus according to claim 1, wherein the predetermined safe operation uses the target temperature of the mist hot water temperature control means as water. The hot water storage type hot water heater according to claim 1 or 2, wherein the mist hot water temperature control means displays an error when communication is not established within a predetermined time.

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