JPS6315036A - Gas hot water supplier - Google Patents

Abstract

PURPOSE:To make it possible to carry out draining by an easy operation and to prevent apparatus from being damaged due to freezing in a case where a draining operation is not carried out by providing an automatic drain valve, a suction valve, a low-temperature operating valve, and a geared motor type water stop valve in addition to freeze preventing electric heaters. CONSTITUTION:When the temperature within the apparatus is lowered (to approximately 5 deg.C or lower), a bimetal switch 2 operates, and power is supplied to electric heaters 1a-1e to hold the temperature at respective parts filled with water and to prevent the apparatus being frozen and damaged. When an operating switch 14 of a kitchen remote controller 13 installed in the house is 'OFF', a geared motor type water stop valve 9 is closed. Therefore, the pressure within the apparatus is lowered by opening a hot water supply tap 17, and an automatic draining valve 5 is opened to discharge remaining water within a water passage out of the apparatus and simultaneously, while holding the temperature by the electric heaters 1a-1e, the freezing and damaging of the apparatus are prevented. Further, even if the hot water supply tap 17 is not opened under the above described condition, a low- temperatured operating valve 12 operates when the outdoor air temperature and water temperature are lowered, and a slight amount of water is discharged and the pressure within the apparatus is lowered so that the automatic drain valve 5 operates to automatically carry out draining within the apparatus.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、冬期における凍結防止を確実に行゛ない、凍
結防止の操作を容易にするガス給湯機に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a gas water heater that reliably prevents freezing in winter and facilitates anti-freezing operations.

従来の技術 近年、ガス給湯機の凍結防止手段は通水回路部に取り付
けられた凍結防止用電気ヒータによって通水部および器
内を保温する構成となっている。BACKGROUND OF THE INVENTION In recent years, anti-freeze means for gas water heaters have been designed to keep the water passage section and the inside of the vessel warm by means of an electric heater for anti-freezing that is attached to the water passage circuit section.

以下図面を参照しながら前述した従来のガス給湯機の一
例について説明する。An example of the conventional gas water heater mentioned above will be described below with reference to the drawings.

第２図は従来のガス給湯機の凍結防止方法の構成を示す
ものである。第２図に示すように、電気ヒータ２１ａ、
　２１ｂ、　２１ｃは通水パイプ２４ａ１２４ｂと熱交
換器２３に取り付けられ、ヒータ作動用のバイメタルス
イッチ２２と直列に結線され、電子制御部２７に接続さ
れている。バイメタルスイッチ２２は水制御部２５ある
いは通水パイプ２４ａの一部に固定されている。FIG. 2 shows the configuration of a conventional method for preventing freezing of a gas water heater. As shown in FIG. 2, an electric heater 21a,
21b and 21c are attached to the water pipe 24a124b and the heat exchanger 23, connected in series with the bimetallic switch 22 for operating the heater, and connected to the electronic control section 27. The bimetal switch 22 is fixed to the water control section 25 or a part of the water pipe 24a.

以上のように構成されたガス給湯機について、以下凍結
防止の動作について説明する。The anti-freezing operation of the gas water heater configured as described above will be described below.

まず常温ではバイメタルスイッチ２２はＯＦＦとなって
おり、電気ヒータ２１ａ、　２１ｂ、　２１ｃには通電
されない。外気温が下がシ器内の温度がバイメタルスイ
ッチ２２のＯＮ設定温度（約５℃）になると、電気ヒー
タ２１ａ、　２１ｂ、　２１ｃＫ通電され、水が充満さ
れている通水回路部および熱交換器２３を凍結温度に達
しないよう保温し、凍結による器具の破損を防止してい
る。First, at room temperature, the bimetal switch 22 is OFF, and no electricity is applied to the electric heaters 21a, 21b, and 21c. When the outside temperature drops and the temperature inside the container reaches the ON setting temperature of the bimetal switch 22 (approximately 5 degrees Celsius), the electric heaters 21a, 21b, and 21cK are energized, and the water flow circuit and heat exchanger filled with water are energized. 23 is kept warm so that it does not reach freezing temperatures to prevent damage to the equipment due to freezing.

発明が解決しようとする問題点 しかしながら前記のような構成では、停電時や試運転終
了後など電源プラグ３０を抜いた時、およびヒータ回路
故障時に、器具の水抜きをしなかった場合、外気温が凍
結温度に達すると器具が破損するという問題点を有して
いた。また前記のような状態で破損を防止するため水抜
き操作を行なう場合、不凍給水せん（または給水元せん
）２８を閉じ、水抜きせん２６ａ、２６ｂを開ける操作
を必要とする問題点を有していた。Problems to be Solved by the Invention However, with the above configuration, if the water is not drained from the appliance when the power plug 30 is unplugged during a power outage or after a trial run, or when the heater circuit breaks down, the outside temperature may drop. The problem was that the equipment was damaged when it reached freezing temperatures. In addition, when draining water to prevent damage in the above-mentioned condition, there is a problem in that it is necessary to close the antifreeze water tap (or water supply tap) 28 and open the drain taps 26a and 26b. Was.

本発明はこのような従来の問題点を解消するものであり
、どのような状態においても凍結の破損を防止し、水抜
き操作を行なう場合であっても、あらゆる地域において
室内で簡単な操作によって実施できるようにするＫある
。The present invention solves these conventional problems, and prevents freezing damage under any conditions, and can be easily operated indoors in any area, even when draining water. There is a K that enables implementation.

問題点を解決するだめの手法 本発明は、本体内の通水回路の最下部に設けられた自動
水抜き弁５、水制御部７の一次側に設けられ開方部が器
外に突き出した吸気弁１゜と、給湯接続口１１に固定さ
れた低温作動弁１２と、通水部４ａ、　４ｂ、　４ｃお
よび熱交換器６の凍結防止用電気ヒータ１０〜１０、電
気ヒータに直列に接続されたバイメタルスイッチ２と、
本体内部の給水接続口８に設けられたギヤードモータ式
止水弁１０と、器具の運転スイッチ１４を備えた台所用
リモコン１３を備え、ギヤードモータ式止水弁が台所用
リモコンｌＯの運転スイッチの「入」、「切」に応じて
開閉するようにしたものである。The present invention is an automatic drain valve 5 provided at the lowest part of the water flow circuit in the main body, and provided on the primary side of the water control section 7, so that the opening protrudes outside the device. The intake valve 1°, the low-temperature operation valve 12 fixed to the hot water supply connection port 11, the water passage parts 4a, 4b, 4c and the electric heaters 10 to 10 for preventing freezing of the heat exchanger 6 are connected in series to the electric heaters. bimetallic switch 2,
A kitchen remote control 13 is equipped with a geared motor type water stop valve 10 provided at the water supply connection port 8 inside the main body and a device operation switch 14, and the geared motor type water stop valve is equipped with the operation switch of the kitchen remote control lO. It is designed to open and close depending on whether it is turned on or off.

作用 本発明は前記した構成によって停電時には、ギヤードモ
ータ式止水弁が閉じるため室内の給湯せんを開けること
によって器内の圧力が下がり、自動水抜き弁が開いて通
水回路内の残留水を排出する。また給湯せんを開けない
場合でも、外気温および水温が下がると低温作動弁が働
いて少量の水が出て器内の圧力が下がるため前記同様自
動水抜き弁が開いて水通路内の残留水を排出することが
できる。Effect of the present invention Due to the above-described structure, in the event of a power outage, the geared motor type water stop valve closes, so when the indoor hot water heater is opened, the pressure inside the water heater decreases, and the automatic water drain valve opens to drain the residual water in the water circuit. Discharge. Also, even if you do not open the hot water heater, when the outside air temperature and water temperature drop, the low-temperature operation valve will operate and a small amount of water will come out, reducing the pressure inside the water heater.As mentioned above, the automatic drain valve will open and remove any remaining water in the water passage. can be discharged.

実施例 第１図に本発明のガス給湯機の一実施例の構成図を示す
。Embodiment FIG. 1 shows a configuration diagram of an embodiment of the gas water heater of the present invention.

本発明のガス給湯機の構成を説明する。The configuration of the gas water heater of the present invention will be explained.

第１図において、ｌａ、　１．ｂ、　ｌｃ、　ｌｄ、　
ｌｅは電気ヒータでバイメタルスイッチ２と直列に結線
され、電子制御部３に接続されている。電気ヒータｌａ
、　ｌｂ、　ｌｃはそれぞれ通水パイプ４ａ、　４ｂ。In FIG. 1, la, 1. b, lc, ld,
le is an electric heater connected in series with the bimetal switch 2 and connected to the electronic control section 3. electric heater la
, lb, and lc are water pipes 4a and 4b, respectively.

４ｃに、電気ヒータｌｄは自動水抜き弁５に、電気ヒー
タ１ｃは熱交換器６に取り付けられている。4c, the electric heater ld is attached to the automatic drain valve 5, and the electric heater 1c is attached to the heat exchanger 6.

バイメタルスイッチ２は水制御部７に固定されている。The bimetal switch 2 is fixed to the water control section 7.

通水回路において、給水接続口８の器具内部にギヤード
モータ式止水弁９と、開口部が器外に突き出た吸気弁１
０が固定されている。In the water circuit, there is a geared motor type water stop valve 9 inside the device of the water supply connection port 8, and an intake valve 1 whose opening protrudes outside the device.
0 is fixed.

給湯接続口１１には低温作動弁１２が接続されている。A low temperature operation valve 12 is connected to the hot water supply connection port 11 .

通水回路の最下部に自動水抜き弁５が設けられ、水制御
部７の一次側より通水パイプ４ｂによって接続されてい
る。前記ギヤードモータ式止水弁９は台所用リモコン１
３の運転スイッチ１４と電気的に接続されておシ、運転
スイッチが「入コのときにはギヤードモータ式止水弁９
が開き、「切」のときには閉じる構成となっている。An automatic drain valve 5 is provided at the lowest part of the water circuit, and is connected to the primary side of the water control section 7 by a water pipe 4b. The geared motor type water stop valve 9 is a kitchen remote control 1.
It is electrically connected to the operation switch 14 of 3, and when the operation switch is turned on, the geared motor type water stop valve 9 is activated.
It opens and closes when it is turned off.

以上のように構成された本発明のガス給湯機においてそ
の動作を説明する。The operation of the gas water heater of the present invention configured as described above will be explained.

まず通常ガス給湯機と使用する場合、不凍給水せん（ま
たは給水元せん）１５を開け、運転スイッチ１４を「入
」にするとギヤードモータ式上水弁９が開き、水圧がか
がると吸気弁１ｏ１自動水抜き弁５、逆上弁１６は閉じ
られ、水は水制御部７、通水パイプ４ｃ、熱交換器６、
通水パイプ４ａ　を通り、湯となって給湯せんビより出
る。First, when using a normal gas water heater, open the antifreeze water supply valve (or water supply valve) 15 and turn on the operation switch 14 to open the geared motor type water valve 9, and when the water pressure increases, the intake air The valve 1o1 automatic drain valve 5 and backflow valve 16 are closed, and water is supplied to the water control unit 7, water pipe 4c, heat exchanger 6,
It passes through the water pipe 4a and comes out of the hot water heater as hot water.

次に凍結防止を行なう動作について説明する。Next, the operation for preventing freezing will be explained.

まず電源が入っている場合、器内温度が下がると（約５
℃以下）、バイメタルスイッチ２が働゛き、電気ヒータ
１ａ〜１ｅ　　に通常され、水が充満している各部分を
保温し、て器具の凍結破損を防止する。また屋内に設置
された台所用リモコン１３　の運転スイッチ１４と「切
」にするとギヤードモータ式止水弁９が閉じるため、給
湯せん１７を開けることによって器内の圧力が低下して
、自動水抜き弁５が開いて水通路内の残留水を器外に排
出すると同時に電気ヒータ１ａ〜１ｅで保温しながら器
具の凍結破損を防止する。First, when the power is on, when the temperature inside the chamber drops (approximately 5
℃ or less), the bimetal switch 2 is activated and the electric heaters 1a to 1e are normally turned on to keep each part filled with water warm and prevent the equipment from freezing and breaking. In addition, when the operation switch 14 of the kitchen remote control 13 installed indoors is turned off, the geared motor type water stop valve 9 closes, so when the hot water heater 17 is opened, the pressure inside the water heater decreases and the water drains automatically. The valve 5 opens to discharge the residual water in the water passage to the outside of the vessel, and at the same time, electric heaters 1a to 1e are used to keep the appliance warm and prevent freezing damage to the appliance.

次に停電時には、運転スイッチ１４が「切」と同じ状態
になるためギヤードモータ式止水弁９が閉じられる。こ
のとき給湯せん１７を開ければ器内の圧力が低下して自
動水抜き弁５が作動して水通路内の残留水を器外に排出
して水抜きを自動的に行ない凍結破損を防止する。また
前記の状態で給湯せん１７を開けない場合でも、外気温
および水温が下がると低温作動弁１２が働き、少量の水
を排出することによって器内の圧力が下がるため自動水
抜き弁５が作動して器内の水抜きを自動的に行なう。Next, at the time of power outage, the geared motor type water stop valve 9 is closed because the operation switch 14 is in the same state as "off". At this time, if the hot water heater 17 is opened, the pressure inside the vessel will drop and the automatic drain valve 5 will operate, draining the residual water in the water passage outside the vessel and automatically draining the water to prevent freezing damage. . Furthermore, even if the hot water heater 17 is not opened in the above-mentioned condition, the low-temperature operation valve 12 operates when the outside air temperature and water temperature drop, and by discharging a small amount of water, the pressure inside the vessel decreases, so the automatic drain valve 5 is activated. The water inside the container will be drained automatically.

更に、未入居の家にガス給湯機を設置し、試運転終了後
電源プラグ１８を抜き、不凍給水せん（または給水光せ
ん）１５を閉じた状態で放置した場合であっても、前記
同様、低温作動弁１２と自動水抜き弁５の働きで水抜き
を自動的に行ない凍結による破損を防止する。Furthermore, even if a gas water heater is installed in an unoccupied house, the power plug 18 is unplugged after the test run, and the antifreeze water heater (or water heater) 15 is left in a closed state, the same applies as described above. The low temperature operation valve 12 and automatic drain valve 5 function to automatically drain water to prevent damage due to freezing.

発明の効果　・ 以上のように本発明は従来の凍結防止用の電気ヒータに
加えて、自動水抜き弁、吸気弁、低温作動弁、ギヤード
モータ式上水弁を設け、器具の遠隔操作用の台所用リモ
コンの運転スイッチの「入」、「切」と前記ギヤードモ
ータ式止水弁の「開」、「閉」を連動させることによっ
て、室内で台所リモコンの運転スイッチを「切」にし給
湯せんを開くだけの容易な操作で水抜きを行なうことが
できる、と同時に前記水抜き操作を行なわない場合でも
、あらゆる条件、状態であっても器具の凍結による破損
を防止することができる。Effects of the Invention - As described above, the present invention provides an automatic water drain valve, an intake valve, a low-temperature operation valve, and a geared motor-type water valve in addition to the conventional electric heater for anti-freezing, and enables remote control of equipment. By linking the operation switch of the kitchen remote control to ``ON'' or ``OFF'' with the ``OPEN'' or ``CLOSE'' of the geared motor type water stop valve, the operation switch of the kitchen remote control can be turned ``OFF'' indoors to heat the hot water supply. Water can be drained with a simple operation of opening the device, and at the same time, even if the water draining operation is not performed, damage to the device due to freezing can be prevented under all conditions and conditions.

また、寒冷地の屋内に常設されているような不凍給水せ
んのない地域であっても、室内に訃いて容易に水抜き操
作を行なうことができる。Furthermore, even in cold regions where there is no antifreeze water supply installed indoors, it is possible to easily drain the water from the room.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明のガス給湯機の一実施例の構成図、第２
図は従来例の構成図、を示す。 ｌａ−、１ｂ、　ｌｃ、　ｉｄ、　ｌｅ　：電気ヒータ
　２：パイメタルスイッチ　３：電子制御部 ４ａ、　４ｂ、　４ｃ　：通水バイブ　５：自動水抜き
弁６：熱交換器　７：水制御部　８：給水接続口９：ギ
ヤードモータ式上水弁　１０：吸気弁１１：給湯接続口
　１２：低温作動弁 １３：台所用リモコン　１４：運転スイッチ１５：不凍
給水せん（または給水光せん）１６：逆止弁　１７：給
湯せん　１８：電源プラグFig. 1 is a configuration diagram of one embodiment of the gas water heater of the present invention, Fig. 2
The figure shows a configuration diagram of a conventional example. la-, 1b, lc, id, le: Electric heater 2: Pie metal switch 3: Electronic control section 4a, 4b, 4c: Water flow vibrator 5: Automatic drain valve 6: Heat exchanger 7: Water control section 8: Water supply connection port 9: Geared motor type water supply valve 10: Intake valve 11: Hot water supply connection port 12: Low temperature operation valve 13: Kitchen remote control 14: Operation switch 15: Antifreeze water supply switch (or water supply light switch) 16: Non-return Valve 17: Hot water heater 18: Power plug

Claims (1)

【特許請求の範囲】 本体内の通水回路の最下部に設けられた自動水抜き弁、
水制御部の一次側に設けられ開 方部が器外に突き出した吸気弁と、給湯接続口に固定さ
れた低温作動弁と、通水部 、および熱交換器の凍結防止用電気ヒー タ、電気ヒータに直列に接続されたバイ メタルスイッチと、本体内部の給水接続口 に設けられたギヤードモータ式止水弁と、器具の運転ス
イッチを備えた台所用リモコン を備え、ギヤードモータ式止水弁が台所用リモコンの運
転スイッチの「入」、「切」に応じて開閉することを特
徴とするガス給湯機。[Claims] An automatic water drain valve provided at the lowest part of the water flow circuit in the main body;
An intake valve that is installed on the primary side of the water control unit and has an opening that protrudes outside the unit, a low-temperature operating valve that is fixed to the hot water connection port, a water passage unit, an electric heater for preventing freezing of the heat exchanger, and an electric heater. Equipped with a bimetal switch connected in series to the heater, a geared motor type water stop valve installed at the water supply connection port inside the main unit, and a kitchen remote control equipped with a device operation switch, the geared motor type water stop valve is installed in the kitchen. A gas water heater that opens and closes depending on whether the operation switch on the remote control is turned on or off.