JPS6326826B2 - - Google Patents
Info
- Publication number
- JPS6326826B2 JPS6326826B2 JP56095007A JP9500781A JPS6326826B2 JP S6326826 B2 JPS6326826 B2 JP S6326826B2 JP 56095007 A JP56095007 A JP 56095007A JP 9500781 A JP9500781 A JP 9500781A JP S6326826 B2 JPS6326826 B2 JP S6326826B2
- Authority
- JP
- Japan
- Prior art keywords
- hot water
- storage tank
- detection section
- water storage
- relay
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 67
- 238000001514 detection method Methods 0.000 claims description 27
- 230000005284 excitation Effects 0.000 claims description 24
- 230000002528 anti-freeze Effects 0.000 claims description 12
- 238000004210 cathodic protection Methods 0.000 claims description 8
- 238000010304 firing Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000003507 refrigerant Substances 0.000 claims description 2
- 238000007710 freezing Methods 0.000 description 8
- 230000008014 freezing Effects 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000005536 corrosion prevention Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1051—Arrangement or mounting of control or safety devices for water heating systems for domestic hot water
- F24D19/1054—Arrangement or mounting of control or safety devices for water heating systems for domestic hot water the system uses a heat pump
Description
【発明の詳細な説明】
本発明は、貯湯タンク内の水を循環ポンプで循
環させることにより、その水を深夜電源で運転さ
れるヒートポンプで発生する熱により加熱して湯
とし、その湯を貯湯タンクの上部より順次貯湯す
るようにしたヒートポンプ式給湯機に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION The present invention circulates water in a hot water storage tank using a circulation pump, heats the water using heat generated by a heat pump operated with power late at night, and converts the hot water into hot water. This relates to a heat pump water heater that stores hot water sequentially from the top of the tank.
一般にこの種のヒートポンプ式給湯機において
は、貯湯タンク内の水が循環する循環路の凍結を
防止するために、循環路に感温体を設け、この感
温体が凍結防止温度を検知した場合、昼間電源に
接続された循環ポンプを駆動させるようにしてい
る。ところが、このようにした場合、特に寒冷地
においては、一般に凍結を予想して貯湯タンク内
の水を抜くことが多く、また冬期時において長期
間にわたつて使用しないときも貯湯タンク内の水
を抜くようにしているもので、この場合、水を抜
くことによつて凍結防止は図れるが、昼間電源、
すなわち100V電源をオフしないで放電するよう
なことが発生しやすく、そのため、貯湯タンク内
に水がないにもかかわらず、前記感温体付近の温
度が凍結防止温度になつた場合、その温度を感温
体が検知して循環ポンプを回転駆動させることに
なり、その結果、循環ポンプが空回りする状態が
起きて、ケーシングやインペラーを破損するとい
う問題があつた。 Generally, in this type of heat pump type water heater, in order to prevent freezing of the circulation path through which water circulates in the hot water storage tank, a temperature sensing element is installed in the circulation path, and when this temperature sensing element detects the anti-freezing temperature, During the day, a circulation pump connected to a power source is driven. However, when doing this, especially in cold regions, the water in the hot water storage tank is often drained in anticipation of freezing, and the water in the hot water storage tank is also drained when it is not used for a long time in the winter. In this case, freezing can be prevented by draining the water, but the power supply during the day,
In other words, it is easy to cause discharge without turning off the 100V power supply, so if the temperature near the thermosensor reaches the anti-freezing temperature even though there is no water in the hot water storage tank, the temperature must be The temperature sensor detects this and drives the circulation pump to rotate, causing the circulation pump to spin idly, causing damage to the casing and impeller.
本発明は上記の問題点を解決するためになされ
たもので、以下、本発明をその一実施例を示す図
面にもとずいて説明する。第１図において、１は
貯湯タンクで、この貯湯タンク１は下部に水の流
入口２を設け、かつ上面部に湯の流出口３を設け
ている。４は前記貯湯タンク１の流出口２と流入
口３との間を結ぶように配管された循環路で、こ
の循環路４の途中には循環ポンプ５と熱交換器６
および湯温調整弁７を設けている。８は給湯管
で、この給湯管８の先端には給湯栓９を設けてい
る。１０は貯湯タンク１の下部に給水する給水管
である。１１はヒートポンプユニツトで、このヒ
ートポンプユニツト１１は前記熱交換器６と接触
するように設けた加熱熱交換器１２と、減圧弁１
３、蒸発器１４、圧縮器１５を環状の冷媒配管管
路により結合してヒートポンプサイクルを形成す
るとともに、蒸発器１４の近傍に位置して外気を
導入するフアン１６を設けている。そして前記ヒ
ートポンプユニツト１１の圧縮器１５およびフア
ン１６は深夜電力によつて運転されるように
200V電源に結線している。１７は貯湯タンク１
内の防食を行なうために、貯湯タンク１の中央部
付近に設けた防食電極で、この防食電極１７は、
貯湯タンク１内に水が入つていると、防食電極１
７にプラス、貯湯タンク１にマイナスの電源を印
加することにより防食が行なわれるもので、前記
ヒートポンプユニツト１１とは別に常時通電でき
る100V電源に接続されている。 The present invention has been made to solve the above-mentioned problems, and the present invention will be explained below based on the drawings showing one embodiment thereof. In FIG. 1, 1 is a hot water storage tank, and this hot water storage tank 1 has a water inlet 2 at its lower part and a hot water outlet 3 at its upper surface. Reference numeral 4 denotes a circulation path piped to connect the outlet 2 and inlet 3 of the hot water storage tank 1, and a circulation pump 5 and a heat exchanger 6 are installed in the middle of the circulation path 4.
and a hot water temperature adjustment valve 7. 8 is a hot water supply pipe, and a hot water tap 9 is provided at the tip of this hot water supply pipe 8. 10 is a water supply pipe that supplies water to the lower part of the hot water storage tank 1. 11 is a heat pump unit, and this heat pump unit 11 includes a heating heat exchanger 12 provided so as to be in contact with the heat exchanger 6, and a pressure reducing valve 1.
3. The evaporator 14 and the compressor 15 are connected by an annular refrigerant piping line to form a heat pump cycle, and a fan 16 is provided near the evaporator 14 to introduce outside air. The compressor 15 and fan 16 of the heat pump unit 11 are operated by late-night electricity.
It is connected to a 200V power supply. 17 is hot water storage tank 1
This anti-corrosion electrode 17 is installed near the center of the hot water storage tank 1 to prevent corrosion inside the tank.
If there is water in the hot water storage tank 1, the anti-corrosion electrode 1
Corrosion prevention is achieved by applying a positive power to the hot water storage tank 1 and a negative power to the hot water storage tank 1, and is connected to a 100V power source that can be constantly energized separately from the heat pump unit 11.
第２図は本発明の一実施例における電気回路図
を示したもので、100V電源に循環ポンプ５とト
ランス１８を並列に接続し、トランス１８の２次
側には分離されたブリツジダイオード１９，２０
を接続してそれぞれの直流電源を構成している。
２１はブリツジダイオード１９側の直流電源に設
けた電気防食および空焼き検知部で、この検知部
２１には電気防食が行なわれているとき、すなわ
ち貯湯タンク１内に水があるときに励磁されるコ
イルをもつリレー励磁コイルRY1２２を設け、か
つこのリレー励磁コイルRY1２２の励磁により作
動するリレー接点２３を後述する凍結防止検知部
２４に直列に接続している。２４はブリツジダイ
オード２０側の直流電源に設けた凍結防止検知部
で、この検知部２４は、第１図に示すように循環
路４の流出口２付近の温度低下による凍結を防止
するために設けられた凍結検知サーミスタ２５の
信号を受けて作動し、さらにリレー励磁コイル
RY2２６を接続している。そして前記リレー励磁
コイルRY2２６の励磁により作動するリレー接点
２７は循環ポンプ５に直列に接続されている。ま
た前記電気防食および空焼き検知部２１は貯湯タ
ンク１および防食電極１７に接続されている。２
８は200V電源に並列に接続されたリレー励磁コ
イルRY3で、このリレー励磁コイルRY3２８の励
磁により作動するリレー接点２９は、前記リレー
励磁コイルRY2２６のリレー接点２７と並列に接
続している。また第１図に示したヒートポンプユ
ニツト１１は200V電源に並列に接続している。 FIG. 2 shows an electric circuit diagram in one embodiment of the present invention, in which a circulation pump 5 and a transformer 18 are connected in parallel to a 100V power supply, and a bridge diode 19 is connected to the secondary side of the transformer 18. ,20
are connected to form each DC power supply.
Reference numeral 21 denotes a cathodic protection and dry firing detection section provided in the DC power supply on the bridge diode 19 side. A relay excitation coil RY 1 22 having a coil is provided, and a relay contact 23 activated by the excitation of the relay excitation coil RY 1 22 is connected in series to an antifreeze detection section 24 to be described later. Reference numeral 24 denotes an antifreeze detection section provided in the DC power supply on the bridge diode 20 side, and this detection section 24 is used to prevent freezing due to a temperature drop near the outlet 2 of the circulation path 4, as shown in FIG. It operates in response to a signal from the provided freeze detection thermistor 25, and further activates the relay excitation coil.
RY 2 26 is connected. A relay contact 27 activated by the excitation of the relay excitation coil RY 2 26 is connected in series to the circulation pump 5. Further, the cathodic protection and dry firing detection section 21 is connected to the hot water storage tank 1 and the corrosion protection electrode 17. 2
8 is a relay excitation coil RY 3 connected in parallel to a 200V power supply, and a relay contact 29 activated by the excitation of this relay excitation coil RY 3 28 is connected in parallel with the relay contact 27 of the relay excitation coil RY 2 26. ing. Furthermore, the heat pump unit 11 shown in FIG. 1 is connected in parallel to a 200V power supply.
上記第１図の構成および第２図の回路構成にお
いて動作を説明する。200V電源に通電されると、
リレー励磁コイルRY3２８が通電されるとともに
ヒートポンプユニツト１１に通電される。この場
合、リレー励磁コイルRY3２８が通電されること
により、リレー接点２９が閉成するため、循環ポ
ンプ５にも通電される。この循環ポンプ５の運転
により、貯湯タンク１内の水は流出口２より循環
路４を通つて熱交換器６に至り、この熱交換器６
の部分でヒートポンプユニツト１１で発生する熱
を奪つて湯となり、そしてこの湯は湯温調整弁７
を通つて貯湯タンク１の流入口３より貯湯タンク
１内に戻されて貯湯タンク１の上部より順次貯湯
される。この場合、貯湯タンク１の流入口３より
貯湯タンク１内に入る湯の温度は、湯温調整弁７
で流量調節を行なつて約55℃の湯が貯湯タンク１
内に流入するようにしている。またこのとき、防
食電極１７と貯湯タンク１間には100V電源が通
電されて電気防食を行なつている。 The operation will be explained using the configuration shown in FIG. 1 and the circuit configuration shown in FIG. 2. When the 200V power supply is energized,
The relay excitation coil RY 3 28 is energized, and at the same time, the heat pump unit 11 is energized. In this case, the relay excitation coil RY 3 28 is energized to close the relay contact 29, and therefore the circulation pump 5 is also energized. As the circulation pump 5 operates, water in the hot water storage tank 1 passes through the circulation path 4 from the outlet 2 and reaches the heat exchanger 6.
The heat generated by the heat pump unit 11 is removed from the hot water, and this hot water is passed through the hot water temperature adjustment valve 7.
The hot water is returned to the hot water storage tank 1 through the inlet 3 of the hot water storage tank 1, and is sequentially stored from the upper part of the hot water storage tank 1. In this case, the temperature of the hot water entering the hot water storage tank 1 from the inlet 3 of the hot water storage tank 1 is determined by the hot water temperature adjustment valve 7.
The flow rate is adjusted with
I'm trying to make it flow inside. Further, at this time, a 100V power supply is applied between the anticorrosion electrode 17 and the hot water storage tank 1 to perform electrolytic protection.
このようなヒートポンプユニツト１１は凍結の
起りそうな低外気温時には運転をしても効果が少
ないので、温度検知部により外気温を検出して
200V電源を切るようにしており、したがつリレ
ー励磁コイルRY3２８動作しなくなり、循環ポン
プ５の回路のリレー接点２９が開成する。一方、
このような低外気温状況下になれば次に説明しま
す凍結防止検知部２４が動作し始める。すなわ
ち、凍結検知サーミスタ２５は、このサーミスタ
２５を取付けた付近の循環路４の温度が２℃にな
ると、凍結防止検知部に信号を発してリレー励磁
コイルRY2２６を励磁して、そのリレー接点２７
を閉成し、またその温度が４℃になると、リレー
励磁コイルRY2２６の励磁を解いて、そのリレー
接点２７を開成するもので、このような回路とす
ることにより、貯湯タンク１内に水が入つている
ときは、電気防食作用が正常に働いており、その
結果、リレー励磁コイルRY1２２は励磁されてそ
のリレー接点２３を閉成しているため、凍結検知
機能は常に働くことになる。前記凍結検知サーミ
スタ２５が２℃を検知すると、リレー励磁コイル
RY2２６が励磁されてそのリレー接点２７を閉成
するため、循環ポンプ５は通電駆動されて凍結を
防止する。この動作は200V電源のオン−オフに
関係なく行なわれる。 Such a heat pump unit 11 has little effect even if it is operated at low outside temperatures where freezing is likely to occur, so the outside temperature is detected by the temperature detection section.
The 200V power is turned off, and the relay excitation coil RY 3 28 stops operating, and the relay contact 29 of the circulation pump 5 circuit opens. on the other hand,
Under such low outside temperature conditions, the antifreeze detection section 24, which will be explained next, begins to operate. That is, when the temperature of the circulation path 4 in the vicinity where the thermistor 25 is attached reaches 2°C, the freeze detection thermistor 25 emits a signal to the freeze prevention detection unit, excites the relay excitation coil RY 2 26, and closes the relay contact. 27
When the temperature reaches 4°C, the relay excitation coil RY 2 26 is de-energized and the relay contact 27 is opened. When water is present, the cathodic protection function is working normally, and as a result, the relay excitation coil RY 1 22 is energized and its relay contact 23 is closed, so the freeze detection function always works. become. When the freeze detection thermistor 25 detects 2°C, the relay excitation coil
Since the RY 2 26 is excited and closes its relay contact 27, the circulation pump 5 is energized to prevent freezing. This operation is performed regardless of whether the 200V power supply is on or off.
一方、貯湯タンク１内に水がない場合は、電気
防食回路に電流が流れないため、リレー励磁コイ
ルRY1２２への励磁はなく、その結果、凍結防止
検知部２４に直列に接続されたリレー接点２３は
開成しているため、凍結防止検知部２４は作動せ
ず、したがつて外気の変動により、仮に凍結検知
サーミスタ２５が２℃を検知し信号を発したとし
ても、循環ポンプ５には通電されないため、貯湯
タンク１内に水がない状態で循環ポンプ５が運転
されてケーシングやインペラーを破損するという
問題はなくなる。 On the other hand, if there is no water in the hot water storage tank 1, no current flows through the cathodic protection circuit, so the relay excitation coil RY 1 22 is not energized, and as a result, the relay connected in series to the antifreeze detection unit 24 Since the contact point 23 is open, the antifreeze detection unit 24 does not operate, and therefore, even if the freeze detection thermistor 25 detects 2°C and issues a signal due to fluctuations in the outside air, the circulation pump 5 will not operate. Since no electricity is applied, there is no problem of the circulation pump 5 being operated without water in the hot water storage tank 1 and damaging the casing or impeller.
以上のように本発明によれば、電気防食および
空焼き検知部に付設したリレー励磁コイルの動作
に応じて開閉するリレー接点を凍結防止検知部に
直列に接続し、前記凍結防止検知部に付設したリ
レー励磁コイルの動作に応じて開閉するリレー接
点を循環ポンプと直列に接続することにより、貯
湯タンク内に水がないときは、凍結防止検知部が
作動しないようにしているため、従来のように貯
湯タンク内に水がない状態で循環ポンプが運転さ
れてケーシングやインペラーを破損するという問
題はなくなり、また余分の電力を消費することも
防止できるものである。 As described above, according to the present invention, a relay contact that opens and closes according to the operation of a relay excitation coil attached to the cathodic protection and dry-burn detection section is connected in series to the antifreeze detection section, and the relay contact that is attached to the antifreeze detection section is connected in series to the antifreeze detection section. By connecting the relay contacts in series with the circulation pump, which open and close according to the operation of the relay excitation coil, the antifreeze detection unit does not operate when there is no water in the hot water storage tank. This eliminates the problem of the circulation pump being operated without water in the hot water storage tank and damaging the casing or impeller, and also prevents excessive power consumption.
第１図は本発明の一実施例を示すヒートポンプ
給湯機のシステム構成図、第２図は同給湯機の電
気回路図である。
１……貯湯タンク、５……循環ポンプ、１１…
…ヒートポンプユニツト、１２……加熱熱交換
器、１４……蒸発器、１５……圧縮器、１８……
トランス、２１……電気防食および空焼き検知
部、２２……リレー励磁コイル、２３……リレー
接点、２４……凍結防止検知部、２６……リレー
励磁コイル、２７……リレー接点。
FIG. 1 is a system configuration diagram of a heat pump water heater showing an embodiment of the present invention, and FIG. 2 is an electric circuit diagram of the water heater. 1...Hot water storage tank, 5...Circulation pump, 11...
... Heat pump unit, 12 ... Heating heat exchanger, 14 ... Evaporator, 15 ... Compressor, 18 ...
Transformer, 21... Cathodic protection and dry firing detection section, 22... Relay excitation coil, 23... Relay contact, 24... Freeze prevention detection section, 26... Relay excitation coil, 27... Relay contact.
Claims (1)
配管管路で結合してなるヒートポンプユニツト
と、貯湯タンクとを備え、前記貯湯タンク内の水
を循環ポンプにより強制循環させて前記加熱熱交
換器で加熱するヒートポンプ給湯機において、
100V電源に循環ポンプとトランスを並列に接続
し、かつトランスの２次側に２つの直流電源を構
成し、一方の直流電源に電気防食および空焼き検
知部を設け、他方の直流電源に凍結防止検知部を
設け、前記電気防食および空焼き検知部に付設し
たリレー励磁コイルの動作に応じて開閉するリレ
ー接点を凍結防止検知部に直列に接続し、前記凍
結防止検知部に付設したリレー励磁コイルの動作
に応じて開閉するリレー接点を循環ポンプと直列
に接続したことを特徴とするヒートポンプ給湯
機。1. A heat pump unit comprising a compressor, a heating heat exchanger, and an evaporator connected through an annular refrigerant piping line, and a hot water storage tank, and the water in the hot water storage tank is forcibly circulated by a circulation pump to generate the heating heat. In a heat pump water heater that heats with an exchanger,
A circulation pump and a transformer are connected in parallel to a 100V power supply, and two DC power supplies are configured on the secondary side of the transformer.One DC power supply is equipped with cathodic protection and a dry-burn detection section, and the other DC power supply is equipped with antifreeze protection. A detection section is provided, and a relay contact that opens and closes according to the operation of a relay excitation coil attached to the cathodic protection and dry firing detection section is connected in series to the antifreeze detection section, and the relay excitation coil attached to the antifreeze detection section. A heat pump water heater characterized in that a relay contact that opens and closes according to the operation of the heat pump is connected in series with a circulation pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56095007A JPS57210241A (en) | 1981-06-18 | 1981-06-18 | Heat pump type hot water supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56095007A JPS57210241A (en) | 1981-06-18 | 1981-06-18 | Heat pump type hot water supply device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57210241A JPS57210241A (en) | 1982-12-23 |
| JPS6326826B2 true JPS6326826B2 (en) | 1988-05-31 |
Family
ID=14125874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56095007A Granted JPS57210241A (en) | 1981-06-18 | 1981-06-18 | Heat pump type hot water supply device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57210241A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0470694U (en) * | 1990-10-29 | 1992-06-23 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3758627B2 (en) * | 2001-11-13 | 2006-03-22 | ダイキン工業株式会社 | Heat pump type water heater |
-
1981
- 1981-06-18 JP JP56095007A patent/JPS57210241A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0470694U (en) * | 1990-10-29 | 1992-06-23 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57210241A (en) | 1982-12-23 |
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