JPH0814436B2 - Heat pump water heater - Google Patents
Heat pump water heaterInfo
- Publication number
- JPH0814436B2 JPH0814436B2 JP29693887A JP29693887A JPH0814436B2 JP H0814436 B2 JPH0814436 B2 JP H0814436B2 JP 29693887 A JP29693887 A JP 29693887A JP 29693887 A JP29693887 A JP 29693887A JP H0814436 B2 JPH0814436 B2 JP H0814436B2
- Authority
- JP
- Japan
- Prior art keywords
- hot water
- heat pump
- heat
- heat exchanger
- pump cycle
- 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 - Lifetime
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 128
- 238000003860 storage Methods 0.000 claims description 36
- 238000009833 condensation Methods 0.000 claims description 23
- 230000005494 condensation Effects 0.000 claims description 23
- 239000002184 metal Substances 0.000 claims description 12
- 238000004080 punching Methods 0.000 claims description 12
- 238000004781 supercooling Methods 0.000 claims description 6
- 239000000470 constituent Substances 0.000 claims description 3
- 238000009834 vaporization Methods 0.000 claims 1
- 230000008016 vaporization Effects 0.000 claims 1
- 239000007789 gas Substances 0.000 description 10
- 239000003507 refrigerant Substances 0.000 description 9
- 238000009835 boiling Methods 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 230000004907 flux Effects 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 4
- 239000002918 waste heat Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000010079 rubber tapping Methods 0.000 description 3
- 238000013517 stratification Methods 0.000 description 2
- 239000008400 supply water Substances 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Landscapes
- Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、ヒートポンプ装置を用いた給湯システムに
関するものである。TECHNICAL FIELD The present invention relates to a hot water supply system using a heat pump device.
従来の技術 従来、ヒートポンプを用いた給湯機には、第４図に示
すようなものがあり、これは貯湯槽内の給湯水をヒート
ポンプ装置の凝縮器を一度通過させるだけで設定温度ま
で上昇させ貯湯槽上部へ貯湯し給湯へ利用するものであ
る。2. Description of the Related Art Conventionally, there is a water heater using a heat pump as shown in FIG. 4, which raises the hot water in the hot water storage tank to the set temperature by passing it once through the condenser of the heat pump device. The hot water is stored in the upper part of the hot water storage tank and used for hot water supply.
以下その動作について第４図を基に説明する。第４図
は、従来のヒートポンプ給湯機の構成図である。１は、
作動媒体（R12）を圧縮するための圧縮機であり、吐出
されたR12の高温高圧のガスは、管路２を通り凝縮器３
へ流入し凝縮熱を給湯水へ伝え液化する。液化したガス
は、管路４を通り膨張弁５で減圧され蒸発器６内で大気
等の熱源と熱交換し蒸発ガス化し管路７を通り再び圧縮
機１で吸入・圧縮される。給湯水は、貯湯槽８内に貯え
られており、凝縮器３内にある給湯水が高温高圧のR12
により加熱される。給湯水が設定温度に達したと温度セ
ンサ９で判断されたならポンプ10により貯湯槽８内の給
湯水を凝縮器３へ送り、順次設定温度まで加熱され貯湯
槽８の上部へ管路11で送られる。給湯水の沸き上がりの
判断は、貯湯槽８内の温度センサ12により判定される。
給湯栓13から給湯されると給水管14から市水が流入し、
温度センサ12が低温を検知すると再び圧縮機が起動す
る。給湯は、市水圧を利用して行なわれるため貯湯槽８
を耐圧・密閉構造としている。The operation will be described below with reference to FIG. FIG. 4 is a block diagram of a conventional heat pump water heater. 1 is
The compressor is a compressor for compressing the working medium (R12), and the discharged high-temperature and high-pressure gas of R12 passes through the conduit 2 and the condenser 3
Flows into the hot water supply and liquefies. The liquefied gas is decompressed by the expansion valve 5 through the pipe line 4, exchanges heat with a heat source such as the atmosphere in the evaporator 6, becomes vaporized gas, passes through the pipe line 7, and is again sucked and compressed by the compressor 1. Hot water is stored in the hot water storage tank 8, and the hot water in the condenser 3 is R12 of high temperature and high pressure.
Is heated by. If the temperature sensor 9 determines that the hot water supply has reached the set temperature, the pump 10 sends the hot water supply in the hot water storage tank 8 to the condenser 3, which is sequentially heated to the set temperature and is then piped 11 to the upper part of the hot water storage tank 8. Sent. The boiling temperature of the hot water is determined by the temperature sensor 12 in the hot water storage tank 8.
When hot water is supplied from the hot water tap 13, city water flows in from the water supply pipe 14,
When the temperature sensor 12 detects a low temperature, the compressor starts again. Hot water is supplied from the city water pressure, so hot water storage tank 8
Has a pressure-resistant and sealed structure.
発明が解決しようとする問題点 しかし、この方式であると貯湯槽内の給湯水を加熱す
るためにはポンプが必要であり、凝縮器本体及び水管路
からの放熱を防止するための充分な断熱が必要である。
更に、貯湯槽内の給湯水沸き上げ温度を高くすると性能
が低下する。又貯湯槽全体の温度を高くしなければなら
ない。などの問題点がある。Problems to be Solved by the Invention However, with this method, a pump is required to heat the hot water in the hot water storage tank, and sufficient heat insulation to prevent heat dissipation from the condenser body and the water pipe line is required. is necessary.
Further, if the temperature of boiling water for supplying hot water in the hot water storage tank is increased, the performance is deteriorated. Also, the temperature of the whole hot water storage tank must be raised. There are problems such as.
本発明は、上記問題点に鑑み、給湯水加熱のためのポ
ンプを不要にし、放熱ロスが少なく高温の沸き上げが可
能でしかも高性能なヒートポンプ給湯機を提供するもの
である。In view of the above problems, the present invention provides a high-performance heat pump water heater that does not require a pump for heating the hot water and can reduce boiling loss at high temperature and can boil at high temperature.
問題点を解決するための手段 貯湯槽内上部に第１の凝縮用２重管式熱交換器を設
け、前記第１の凝縮用２重管式熱交換器の外管の一方を
給湯栓に接続し、前記貯湯槽内下部に第２の凝縮用２重
管式熱交換器を設け、前記第２の凝縮用２重管式熱交換
器の外管の一方を給水管に接続し、前記第１の凝縮用２
重管式熱交換器の内管と過冷却用熱交換器、圧縮機、蒸
発器、膨張弁を構成要素とした第１のヒートポンプサイ
クルとを接続し、前記第２の凝縮用２重管式熱交換器の
内管と圧縮機、蒸発器、膨張弁を構成要素とした第２の
ヒートポンプサイクルとを接続し、前記第１のヒートポ
ンプサイクルは、前記第２のヒートポンプサイクルの蒸
発熱により過冷却が行なわれるように、第１、第２のヒ
ートポンプサイクルを構成するものである。Means for Solving the Problems A first double tube heat exchanger for condensation is provided in the upper part of the hot water storage tank, and one of the outer tubes of the first double tube heat exchanger for condensation is used as a hot water tap. A second condensing double-tube heat exchanger is provided in the lower part of the hot water storage tank, and one of the outer tubes of the second condensing double-tube heat exchanger is connected to a water supply pipe; 1st for condensation 2
The inner tube of the heavy pipe heat exchanger is connected to a first heat pump cycle having a supercooling heat exchanger, a compressor, an evaporator, and an expansion valve as constituent elements, and the second double pipe for condensation is used. The inner tube of the heat exchanger is connected to a second heat pump cycle having a compressor, an evaporator and an expansion valve as constituent elements, and the first heat pump cycle is supercooled by the heat of evaporation of the second heat pump cycle. The first and second heat pump cycles are configured so that
作用 これにより、第１の凝縮用２重管式熱交換器は、貯湯
槽上部の給湯水をより高温に加熱し、第２の凝縮用２重
管式熱交換器は、貯湯槽全体の給湯水を加熱する。給湯
栓が開けられると給水管から水が第２の凝縮用２重管式
熱交換器のパンチングメタルで構成された外管内を通り
流束が拡散されながら熱交換され貯湯槽内へはいり貯湯
槽内の温度成層を乱すことわない。給湯水は、第１の凝
縮用２重管式熱交換器の外管内を通り熱交換され更に高
温となり出湯される。出湯されているときは、第１のヒ
ートポンプサイクルおよび第２のヒートポンプサイクル
が並列に運転され、第１のヒートポンプサイクルの凝縮
後の液冷媒が持つ顕熱を第２のヒートポンプサイクルの
熱源の一部とし有効利用する。第１のヒートポンプサイ
クルからの廃熱を利用する事により高効率が図られる。
貯湯槽からの自然放熱による温度低下時の加熱には、温
度センサの働きにより第１および第２の凝縮用２重管式
熱交換器の運転が選択される。自然放熱による加熱は、
自然対流で行ない、出湯による加熱は、強制対流（一部
自然対流）で行なわれるためポンプが不要となる。Action As a result, the first condensing double-pipe heat exchanger heats the hot water in the upper part of the hot water storage tank to a higher temperature, and the second double-condensing heat exchanger for condensing heat of the entire hot water storage tank. Heat the water. When the hot water tap is opened, water is exchanged from the water supply pipe into the hot water storage tank by passing heat through the outer tube made of the punching metal of the second double-tube heat exchanger for condensation, while the flux is diffused and exchanged. It does not disturb the internal temperature stratification. The hot water is passed through the outer tube of the first condensing double-tube heat exchanger to be heat-exchanged to a higher temperature and is discharged. When the hot water is discharged, the first heat pump cycle and the second heat pump cycle are operated in parallel, and the sensible heat of the liquid refrigerant after condensation of the first heat pump cycle is part of the heat source of the second heat pump cycle. And use it effectively. High efficiency is achieved by utilizing the waste heat from the first heat pump cycle.
For heating when the temperature drops due to natural heat dissipation from the hot water storage tank, the operation of the first and second double-tube heat exchangers for condensation is selected by the action of the temperature sensor. Heating by natural heat dissipation
Natural convection is used and heating by hot water is performed by forced convection (partial natural convection), so a pump is not required.
実施例 以下本発明の一実施例について図面を参照しながら説
明する。第１図において、20は貯湯槽であり、貯湯槽20
内の上部に第１の凝縮用２重管式熱交換器21が設けら
れ、パンチングメタルで構成された外管22の一方の接続
口23は、貯湯槽20内へ開放され内部には給湯水が流れ
る。他の一方の接続口24には、管路25を介し給湯栓26が
接続されている。内管27には第１のヒートポンプサイク
ル28のR12（高沸点冷媒）が流れる。貯湯槽20の下部に
は第２の凝縮用２重管式熱交換器29が設けられており、
外管30はパンチングメタルで構成され貯湯槽20内へ開放
されている。その外管30内は給湯水で満たされ一方は給
水管31と接続されている。内管32には第２のヒートポン
プサイクル33のR22（低沸点冷媒）が流れる。第１のヒ
ートポンプサイクル28は、圧縮機34、過冷却用熱交換器
35、膨張弁36、蒸発器37、で構成され、第２のヒートポ
ンプサイクル33は、圧縮機38、過冷却用熱交換器35、膨
張弁39、蒸発器40、で構成されている。41,42は、温度
センサである。Embodiment One embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, 20 is a hot water storage tank, and the hot water storage tank 20
The first double tube heat exchanger 21 for condensation is provided in the upper part of the inside, and one connection port 23 of the outer tube 22 made of punching metal is opened into the hot water storage tank 20 and the inside thereof is supplied with hot water. Flows. A hot water tap 26 is connected to the other one of the connection ports 24 via a pipe line 25. R12 (high boiling point refrigerant) of the first heat pump cycle 28 flows through the inner pipe 27. In the lower part of the hot water storage tank 20, a second double tube heat exchanger 29 for condensation is provided,
The outer tube 30 is made of punching metal and is open to the hot water storage tank 20. The inside of the outer pipe 30 is filled with hot water and one of them is connected to a water supply pipe 31. R22 (low boiling point refrigerant) of the second heat pump cycle 33 flows through the inner pipe 32. The first heat pump cycle 28 includes a compressor 34 and a heat exchanger for subcooling.
The second heat pump cycle 33 includes a compressor 38, a supercooling heat exchanger 35, an expansion valve 39, and an evaporator 40. 41 and 42 are temperature sensors.
次に、この一実施例の構成における作用を説明する。
貯湯槽20内の給湯水の温度が低い場合、温度センサ41,4
2が機能し第１および第２のヒートポンプサイクル28,33
が運転される。その時給湯栓26から出湯されてない場
合、貯湯槽20内の給湯水を上下２個の凝縮用２重管式熱
交換器21,29で自然対流により加熱を行なうため貯湯槽2
0内の給湯水温度は上部が高く下部が低いという温度分
布ができる。従って貯湯槽20の上部では高温の給湯水が
速く得られる。Next, the operation of the configuration of this embodiment will be described.
When the temperature of the hot water in the hot water tank 20 is low, the temperature sensors 41, 4
2 functioning first and second heat pump cycle 28,33
Is driven. If hot water is not discharged from the hot water tap 26 at that time, the hot water in the hot water storage tank 20 is heated by natural convection in the upper and lower double tube heat exchangers 21 and 29 for condensation.
The temperature distribution of hot water in 0 is high in the upper part and low in the lower part. Therefore, high-temperature hot water can be quickly obtained in the upper part of the hot water storage tank 20.
第１のヒートポンプサイクル28では、給湯水をより高
温に沸き上げるため第２のヒートポンプサイクル33の作
動媒体（例えばR22）より蒸気圧の低い作動媒体（例え
ばR12）を用いている。第１ヒートポンプサイクル28の
圧縮機34を起動させ高温高圧のR12ガスを吐出すと、吐
出されたガスは、吐出管43を通り第１の凝縮用２重管式
熱交換器21の内管27へ流入する。そこで、給湯水と自然
対流による熱交換を行ない、高温高圧の冷媒ガスは凝縮
液化するが給湯水温が高いため液化した冷媒の温度は高
ものとなる。高温の液冷媒は、管路44を通り過冷却熱交
換器35で第２のヒートポンプサイクル33へ顕熱を伝え温
度が低下する。その後、膨張弁36により減圧され蒸発器
37で大気熱などと熱交換し圧縮機34に吸入される。The first heat pump cycle 28 uses a working medium (for example, R12) having a lower vapor pressure than the working medium (for example, R22) of the second heat pump cycle 33 in order to heat the hot water to a higher temperature. When the compressor 34 of the first heat pump cycle 28 is started to discharge the high-temperature and high-pressure R12 gas, the discharged gas passes through the discharge pipe 43 and the inner pipe 27 of the first double-tube heat exchanger 21 for condensation 21. Flow into. Therefore, heat exchange with the hot water is performed by natural convection, and the high-temperature and high-pressure refrigerant gas is condensed and liquefied, but the temperature of the liquefied refrigerant becomes high because the hot-water temperature is high. The high temperature liquid refrigerant passes sensible heat to the second heat pump cycle 33 in the supercooling heat exchanger 35 through the pipe line 44, and the temperature thereof drops. After that, the pressure is reduced by the expansion valve 36 and the evaporator
At 37, heat is exchanged with atmospheric heat and the like, and the heat is sucked into the compressor 34.
第２のヒートポンプサイクル33においては、圧縮機38
から吐出されたガスは、吐出管45を通り第２の凝縮用２
重管式熱交換器29の内管32へ流入する。そこで、給湯水
と自然対流による熱交換を行ない、高温高圧の冷媒ガス
は、凝縮液化し膨張弁39により減圧され過冷却熱交換器
35で第１のヒートポンプサイクル28の顕熱を奪い蒸発す
る。更に、蒸発器40で大気熱などと熱交換し圧縮機38に
吸入される。これは、第１のヒートポンプサイクル28で
貯湯槽20の上部を高温に沸き上げる時に給湯水と熱交換
が終った液冷媒の廃熱を第２のヒートポンプサイクル33
の熱源とするものである。従って、第２のヒートポンプ
サイクル33は、低圧が高くでき高性能化が可能となる。
また第１のヒートポンプサイクル28には、作動媒体とし
て蒸気圧の低いR12を用いているため高温沸き上げにお
いても大きな性能低下はない。In the second heat pump cycle 33, the compressor 38
The gas discharged from the gas passes through the discharge pipe 45 and the second condenser 2
It flows into the inner pipe 32 of the heavy pipe heat exchanger 29. Therefore, heat exchange is performed with hot water and natural convection, and the high-temperature and high-pressure refrigerant gas is condensed and liquefied and is decompressed by the expansion valve 39 to be a supercooling heat exchanger.
At 35, the sensible heat of the first heat pump cycle 28 is taken and evaporated. Further, the evaporator 40 exchanges heat with atmospheric heat and the like and is sucked into the compressor 38. This is because when the upper part of the hot water storage tank 20 is boiled to a high temperature in the first heat pump cycle 28, the waste heat of the liquid refrigerant that has finished heat exchange with the hot water is transferred to the second heat pump cycle 33.
It is used as the heat source of. Therefore, the second heat pump cycle 33 can have a high low pressure and high performance.
Further, since R12, which has a low vapor pressure, is used as the working medium in the first heat pump cycle 28, there is no significant performance deterioration even at high temperature boiling.
次に、貯湯槽20側の作用について説明する。まず出湯
されてない場合、加熱が開始されると第１および第２の
凝縮用２重管式熱交換器21,29の外管22,30は、パンチン
グメタルで構成されているため加熱された給湯水は比較
的簡単に外管22,30を通過する。Next, the operation of the hot water storage tank 20 side will be described. First, when the heating is started when the hot water is not discharged, the outer tubes 22 and 30 of the first and second double-tube heat exchangers 21 and 29 for condensation are heated because they are made of punching metal. Hot water supply passes through the outer pipes 22 and 30 relatively easily.
第２図に、第２の凝縮用２重管式熱交換器29での出湯
がない場合の自然対流による給湯水の流れ図を示す。図
に示すように低温の水は、高温の内管32により加熱さ
れ、外管30のパンチングメタルを自然対流で通過する。
次に、給湯栓26から出湯された場合、圧縮機34から吐出
された高温高圧の冷媒ガスは、第１の凝縮用２重管式熱
交換器21の内管27へ流入する。そこで貯湯槽20内へ開放
された口23およびパンチングメタルから流入した外管22
内を流れる給湯水と強制対流による熱交換を行ない給湯
水は更に温度上昇され出湯される。また給水管31から流
入する低温の給湯水は、第２の凝縮用２重管式熱交換器
29の内管32と熱交換される。第３図に、出湯時における
第２の凝縮用２重管式熱交換器29での給湯水流れ図を示
す。FIG. 2 shows a flow chart of hot-water supply by natural convection when there is no tapping water in the second condensing double-pipe heat exchanger 29. As shown, the cold water is heated by the hot inner tube 32 and passes through the punching metal of the outer tube 30 by natural convection.
Next, when hot water is discharged from the hot water tap 26, the high-temperature and high-pressure refrigerant gas discharged from the compressor 34 flows into the inner pipe 27 of the first condensing double-pipe heat exchanger 21. Therefore, the mouth 23 opened into the hot water storage tank 20 and the outer pipe 22 flowing in from the punching metal
Heat exchange is performed by forced convection with the hot water flowing inside, and the temperature of the hot water is further raised and discharged. The low-temperature hot water that flows in from the water supply pipe 31 is used as the second condensing double-pipe heat exchanger.
Heat is exchanged with the inner pipe 32 of 29. FIG. 3 shows a hot water supply flow chart in the second double-tube heat exchanger 29 for condensation when tapping hot water.
第３図において、給水管31から外管30内へ流入した低
温の給湯水は、内管32と強制対流（一部自然対流）によ
る熱交換しながら温度上昇し一部は、パンチングメタル
で構成された外管30の小穴52を通り貯湯槽20内へ流入す
る。従って給水管31からの流束は、パンチングメタルで
拡散され、貯湯槽20内の給湯水は、温度成層される。In FIG. 3, the low-temperature hot water supplied from the water supply pipe 31 into the outer pipe 30 rises in temperature while exchanging heat with the inner pipe 32 by forced convection (partial natural convection), and partly made of punching metal. It flows into the hot water storage tank 20 through the small holes 52 of the formed outer pipe 30. Therefore, the flux from the water supply pipe 31 is diffused by the punching metal, and the hot water in the hot water storage tank 20 is temperature stratified.
温度センサ41,42の作用は、温度センサ41が高温沸き
上げ用であり第１のヒートポンプサイクル28の運転制御
用である。温度センサ42は、低温沸き上げ用であり第２
のヒートポンプサイクル33の運転制御用である。The functions of the temperature sensors 41 and 42 are that the temperature sensor 41 is for high temperature boiling and for operation control of the first heat pump cycle 28. The temperature sensor 42 is for low temperature boiling and is the second
It is for operation control of the heat pump cycle 33.
以上、説明したように第１のヒートポンプサイクル28
の廃熱を第２のヒートポンプサイクル33の熱源として有
効利用するため高効率なヒートポンプ給湯器が実現でき
る。出湯されていないときの加熱においては、貯湯槽20
内温度センサ41,42の作用により第１あるいは第２の凝
縮用２重管式熱交換器21,29を用い自然対流により給湯
水を加熱し、又、出湯時においては、貯湯槽20内の第1,
第２の凝縮用２重管式熱交換器21,29により強制対流
（一部自然対流）により給湯水を加熱するものであり熱
交換の効率が向上する。また出湯時には、給湯水を更に
加熱できより高温の給湯が可能となる。従って、給湯水
を加熱するためのポンプが不要である。第1,第２の凝縮
用２重管式熱交換器21,29の外管22,30は、パンチングメ
タルで構成されているため自然対流による熱交換に対し
て大きな抵抗となることもなく、外管30においては、流
束を拡散する効果もある。また第1,第２の凝縮用２重管
式熱交換器21,29が貯湯槽20内に設けられているため外
気への放熱ロスがなく常に給湯水温度と同じであり熱交
換開始までの立上りが早くなる。As described above, the first heat pump cycle 28
Since the waste heat of is effectively used as the heat source of the second heat pump cycle 33, a highly efficient heat pump water heater can be realized. For heating when the hot water is not discharged, the hot water storage tank 20
The hot or cold water is heated by natural convection using the first or second double-tube heat exchangers 21 and 29 for condensation by the action of the internal temperature sensors 41 and 42. First,
The second condensing double-pipe heat exchangers 21 and 29 heat the hot water by forced convection (partial natural convection), which improves the efficiency of heat exchange. Further, when tapping hot water, the hot water can be heated further, and hot water can be supplied at a higher temperature. Therefore, a pump for heating the hot water is unnecessary. Since the outer tubes 22 and 30 of the first and second double-tube heat exchangers 21 and 29 for condensation are made of punching metal, there is no great resistance to heat exchange by natural convection. The outer tube 30 also has an effect of diffusing the flux. Further, since the first and second condensing double-pipe heat exchangers 21 and 29 are provided in the hot water storage tank 20, there is no loss of heat radiation to the outside air and the temperature is always the same as the hot water supply temperature. Starts up faster.
発明の効果 本発明は、第１のヒートポンプサイクルの廃熱を第２
のヒートポンプサイクルの熱源として有効利用するため
高効率なヒートポンプ給湯機が実現できる。また貯湯槽
内に凝縮用２重管式熱交換器を上下に設けているため放
熱ロスがなく、外管にはパンチングメタルを用いている
ため、出湯時には給湯水の昇温と給水の加熱が強制対流
と自然対流で行え、熱交換効率が向上し、更に給湯水加
熱のためのポンプが不要となる。また、下部の凝縮用２
重管式熱交換器においては、外管にパンチングメタルに
より給水による流束を拡散でき貯湯槽内の温度成層が保
てる。という格別の効果を発揮する。EFFECTS OF THE INVENTION The present invention reduces waste heat of the first heat pump cycle to the second heat pump cycle.
Since it is effectively used as a heat source for the heat pump cycle, a highly efficient heat pump water heater can be realized. In addition, there is no heat dissipation loss because the condensing double-tube heat exchangers are installed above and below in the hot water storage tank, and the punching metal is used for the outer tube. It can be done by forced convection and natural convection, the heat exchange efficiency is improved, and the pump for heating the hot water is no longer necessary. In addition, 2 for the lower condensation
In the heavy-tube heat exchanger, the flux due to the water supply can be diffused by the punching metal in the outer tube, and the temperature stratification in the hot water storage tank can be maintained. It has a special effect.
第１図は本発明の一実施例のヒートポンプ給湯機の構成
図、第２図は同ヒートポンプ給湯機の第２の凝縮用２重
管式熱交換器での自然対流による給湯水の流れ図、第３
図は同ヒートポンプ給湯機の出湯時における第２の凝縮
用２重管式熱交換器での給湯水流れ図、第４図は従来例
のヒートポンプ給湯機の構成図である。 20……貯湯槽、21……第１の凝縮用２重管式熱交換器、
22,30……外管、28……第１のヒートポンプサイクル、2
9……第２の凝縮用２重管式熱交換器、33……第２のヒ
ートポンプサイクル、35……過冷却熱交換器。FIG. 1 is a configuration diagram of a heat pump water heater according to an embodiment of the present invention, and FIG. 2 is a flow diagram of hot water supply water by natural convection in a second condensing double tube heat exchanger of the heat pump water heater, Three
FIG. 4 is a flow diagram of hot-water supply water in the second condensing double-pipe heat exchanger at the time of hot water discharge of the heat pump water heater, and FIG. 4 is a configuration diagram of a conventional heat pump water heater. 20 …… hot water storage tank, 21 …… first double tube heat exchanger for condensation,
22,30 …… Outer tube, 28 …… First heat pump cycle, 2
9 …… Second condensing double tube heat exchanger, 33 …… Second heat pump cycle, 35 …… Supercooling heat exchanger.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 乾 勲 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 (56)参考文献 特開 昭58−190662（ＪＰ，Ａ) 特開 昭61−114045（ＪＰ，Ａ) 実開 昭61−36256（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Isao Inui 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-58-190662 (JP, A) JP-A-61-114045 (JP, A) Actually open Sho 61-36256 (JP, U)
Claims (2)
換器を設け、前記第１の凝縮用２重管式熱交換器の外管
の一方を給湯栓に接続し、他端を前記貯湯槽内に開口
し、前記貯湯槽内下部に第２の凝縮用２重管式熱交換器
を設け、前記第２の凝縮用２重管式熱交換器の外管の一
方を給水管に接続し、他端を前記貯湯槽内に開口し、前
記第１の凝縮用２重管式熱交換器と前記第２の凝縮用２
重管式熱交換器の外管はパンチングメタルで構成され、
前記第１の凝縮用２重管式熱交換器の内管と過冷却熱交
換器、圧縮機、蒸発器、膨張弁を構成要素とした第１の
ヒートポンプサイクルを接続し、前記第２の凝縮用２重
管式熱交換器の内管と圧縮機、蒸発器、膨張弁を構成要
素として第２のヒートポンプサイクルを接続し、前記第
１のヒートポンプサイクルの過冷却熱交換器は、前記第
１の凝縮用２重管式熱交換器と膨張弁の間に設け、前記
第２のヒートポンプサイクルの蒸発熱により第１のヒー
トポンプサイクルの過冷却が行われるように、第１、第
２のヒートポンプサイクルを構成したことを特徴とした
ヒートパンプ給湯機。1. A first double-tube heat exchanger for condensation is provided in an upper part of a hot water storage tank, and one of outer tubes of the first double-tube heat exchanger for condensation is connected to a hot water tap. The other end is opened into the hot water storage tank, and a second double tube heat exchanger for condensation is provided in the lower part of the hot water tank, and one of the outer tubes of the second double tube heat exchanger for condensation is provided. Is connected to a water supply pipe, and the other end is opened in the hot water storage tank, and the first double tube heat exchanger for condensation and the second condenser for condensation 2 are connected.
The outer tube of the heavy-tube heat exchanger is made of punching metal,
The first heat pump cycle including the inner tube of the first condensing double-tube heat exchanger and a subcooling heat exchanger, a compressor, an evaporator, and an expansion valve is connected, and the second condensing unit is connected. A second heat pump cycle is connected with the inner tube of the dual-tube heat exchanger for compressor, the compressor, the evaporator, and the expansion valve as constituent elements, and the supercooling heat exchanger of the first heat pump cycle is the first heat pump cycle. And a second heat pump cycle so that the first heat pump cycle is supercooled by the heat of vaporization of the second heat pump cycle. A heat pump water heater characterized by being configured.
ヒートポンプサイクルの作動媒体の蒸気圧より低い蒸気
圧特性の作動媒体を用いたことを特徴とする特許請求の
範囲第１項記載のヒートポンプ給湯機。2. The heat pump according to claim 1, wherein a working medium having a vapor pressure characteristic lower than that of the working medium of the second heat pump cycle is used in the first heat pump cycle. Water heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29693887A JPH0814436B2 (en) | 1987-11-24 | 1987-11-24 | Heat pump water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29693887A JPH0814436B2 (en) | 1987-11-24 | 1987-11-24 | Heat pump water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01137157A JPH01137157A (en) | 1989-05-30 |
| JPH0814436B2 true JPH0814436B2 (en) | 1996-02-14 |
Family
ID=17840121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29693887A Expired - Lifetime JPH0814436B2 (en) | 1987-11-24 | 1987-11-24 | Heat pump water heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0814436B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03279718A (en) * | 1990-02-14 | 1991-12-10 | Matsushita Electric Ind Co Ltd | Cool and hot water supply system |
| FR2934890B1 (en) * | 2008-08-06 | 2010-09-17 | Cb Froid | INSTALLATION OF HEAT PUMP FOR HEATING A FLUID. |
| CN103234271B (en) * | 2013-05-11 | 2015-04-15 | 力诺瑞特（上海）新能源有限公司 | Dual system Freon path dividing heat pump water heater |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58190662A (en) * | 1982-04-28 | 1983-11-07 | サンウエーブ工業株式会社 | Supercooling heat pump |
| JPS6136256U (en) * | 1984-07-31 | 1986-03-06 | ダイキン工業株式会社 | water heater |
| JPS61114045A (en) * | 1984-11-07 | 1986-05-31 | Mitsubishi Electric Corp | Heat pump type hot-water supply device |
-
1987
- 1987-11-24 JP JP29693887A patent/JPH0814436B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01137157A (en) | 1989-05-30 |
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