JPS61149759A - Heat pump type hot water supply apparatus - Google Patents
Heat pump type hot water supply apparatusInfo
- Publication number
- JPS61149759A JPS61149759A JP59271540A JP27154084A JPS61149759A JP S61149759 A JPS61149759 A JP S61149759A JP 59271540 A JP59271540 A JP 59271540A JP 27154084 A JP27154084 A JP 27154084A JP S61149759 A JPS61149759 A JP S61149759A
- Authority
- JP
- Japan
- Prior art keywords
- hot water
- water
- temperature
- refrigerant
- preheating
- 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.)
- Pending
Links
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
- F24D17/00—Domestic hot-water supply systems
- F24D17/02—Domestic hot-water supply systems using heat pumps
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、ヒートポンプ式給湯装置、特にその効率化
および沸き上げ時間の短縮化を図ったヒートポンプ式給
湯装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a heat pump water heater, and particularly to a heat pump water heater that improves efficiency and shortens boiling time.
従来、ヒートポンプ式給湯装置として第３図に示すもの
があった。Conventionally, there has been a heat pump water heater shown in FIG. 3.
第３図において、１は圧縮機、２は温水加熱用凝縮器、
３は絞り装置、４は熱源側蒸発器であり、これらが順次
冷媒配管５で接ｌ＆されて冷凍サイクル１４が構成され
ている。６は貯湯タンク、７は貯湯タンク６下部と温水
加熱用凝縮器２の水入口を接続する温水循環回路往路、
８は温水加熱用凝縮器２の水出口と貯湯タンク６上部と
を接続する温水循環回路復路、９は温水循環回路往路７
の途中に設けられた温水循環パイプであり、これらによ
って温水循環回路１５が構成されている。また、１０は
貯湯タンク６の最下部に接続された給水配管、１１は貯
湯タンク６の最上部に接続された給湯配管、１２は貯湯
タンク６に装着されてその内部の貯湯温度を検出して圧
縮機１お上り温水循環ポンプ９の運転を制御する温水加
熱用サーモスタット、１３は熱源１℃蒸発器４の水入口
に後続された熱源水配管である。In Fig. 3, 1 is a compressor, 2 is a hot water heating condenser,
Reference numeral 3 indicates a throttle device, and reference numeral 4 indicates a heat source side evaporator, which are successively connected through a refrigerant pipe 5 to form a refrigeration cycle 14. 6 is a hot water storage tank, 7 is a hot water circulation circuit outgoing path connecting the lower part of the hot water storage tank 6 and the water inlet of the hot water heating condenser 2;
8 is a hot water circulation circuit return path connecting the water outlet of the hot water heating condenser 2 and the upper part of the hot water storage tank 6; 9 is a hot water circulation circuit outbound path 7
These are hot water circulation pipes installed in the middle of the hot water circulation circuit 15. Further, 10 is a water supply pipe connected to the bottom of the hot water storage tank 6, 11 is a hot water supply pipe connected to the top of the hot water storage tank 6, and 12 is attached to the hot water storage tank 6 to detect the internal hot water temperature. A hot water heating thermostat 13 controls the operation of the compressor 1 upstream hot water circulation pump 9, and 13 is a heat source water pipe connected to the water inlet of the heat source 1° C. evaporator 4.
次に、以上のように構成された従来のヒートポンプ式給
湯装置の動作について説明する。温水加熱用サーモスタ
ット１２は例えば５５℃に設定され、貯湯タンク６内の
貯湯温度が５５℃未満の時、温水ＩＩＩポンプ９および
圧縮機１を運転させる。Next, the operation of the conventional heat pump water heater configured as described above will be explained. The hot water heating thermostat 12 is set to, for example, 55° C., and when the hot water temperature in the hot water storage tank 6 is less than 55° C., the hot water III pump 9 and the compressor 1 are operated.
温水循環ポンプ９の運転によって温水は貯湯タンク６と
温水加熱用凝縮器２の間を循環する。すなわち、貯湯水
は、貯湯タンク６の下部から出て温水循環回路往路７を
通り、温水加熱用凝縮器２を経て温水循環回路復路８を
通り、貯湯タンク６の上部へ戻る。一方、圧縮１＄１１
の運転により、冷媒ガスは圧縮されて高温高圧ガスとな
り、冷媒配管５を通って温水加熱用ＮＭ器２に入り、こ
こで温水と熱交換して放熱することにより温水を加熱し
、冷媒がスが凝縮して高温液冷媒となる。この時、冷媒
は温水の流れ方向に対し向流方向に流れ、温水は温水加
熱用凝縮器２の出口部で高温ガス冷媒と熱交換するため
に、温水出口温度を高（できる。By operating the hot water circulation pump 9, hot water is circulated between the hot water storage tank 6 and the hot water heating condenser 2. That is, the stored hot water comes out from the lower part of the hot water storage tank 6, passes through the hot water circulation circuit outward path 7, passes through the hot water heating condenser 2, passes through the hot water circulation circuit return path 8, and returns to the upper part of the hot water storage tank 6. On the other hand, compression 1$11
During operation, the refrigerant gas is compressed and becomes high-temperature, high-pressure gas, which passes through the refrigerant pipe 5 and enters the hot water heating NM device 2, where it exchanges heat with the hot water and radiates heat to heat the hot water, and the refrigerant is condenses to become a high-temperature liquid refrigerant. At this time, the refrigerant flows countercurrently to the flow direction of the hot water, and the hot water exchanges heat with the high-temperature gas refrigerant at the outlet of the hot water heating condenser 2, so that the hot water outlet temperature can be increased.
温水加熱用凝縮Ｗ２を出た液冷媒は、絞り装置３で減圧
され、低温低圧液冷媒となって熱！！１ｍ蒸発器４に入
り、ここで熱源水配管１３から供給される熱源水から吸
熱しで蒸発し、低圧ガス冷媒となりで圧縮機１へ戻る。The liquid refrigerant that comes out of the hot water heating condensate W2 is depressurized by the expansion device 3 and becomes a low-temperature, low-pressure liquid refrigerant that generates heat! ! The water enters the 1 m evaporator 4, where it absorbs heat from the heat source water supplied from the heat source water pipe 13, evaporates, and returns to the compressor 1 as a low-pressure gas refrigerant.
上述した冷凍サイクルは第４図に示すようになる。第４
図において、Ａ点は圧縮機１の出口、Ｂｉ、は温水加熱
用凝縮器２の出口、９点は絞り装置１３の出口、Ｅ点は
熱源側蒸発器４の出口すなわち圧縮８！１の入口での冷
媒圧力であり、このサイクルを繰り返すことにより、貯
湯タンク６内の水を例えば５５℃まで昇温させることが
できる。貯湯温度が５５℃に達すると、温水加熱用サー
モスタット１２の検出信号により圧縮機１お上り温水循
環ポンプ９の運転を停止し、加熱運転が終了する。また
、給湯負荷が生じ、給湯配管１１から給湯され、給湯配
管１１から貯湯タンク、６内に給水されて、温水加熱用
サーモスタット１２の温度検出部が５５℃未満になると
、再び温水循環ポンプ９および圧縮１ｆｌｌの運転を再
開する。The above-mentioned refrigeration cycle is shown in FIG. Fourth
In the figure, point A is the outlet of the compressor 1, Bi is the outlet of the hot water heating condenser 2, point 9 is the outlet of the expansion device 13, and point E is the outlet of the heat source side evaporator 4, that is, the inlet of compression 8!1. By repeating this cycle, the temperature of the water in the hot water storage tank 6 can be raised to, for example, 55°C. When the hot water storage temperature reaches 55° C., the operation of the compressor 1 upstream hot water circulation pump 9 is stopped by a detection signal from the hot water heating thermostat 12, and the heating operation is ended. In addition, when a hot water supply load occurs, hot water is supplied from the hot water supply pipe 11, water is supplied from the hot water supply pipe 11 into the hot water storage tank 6, and the temperature detection part of the hot water heating thermostat 12 becomes less than 55°C, the hot water circulation pump 9 and Restart operation with 1fll compression.
貯湯タンク６内には例えば５℃の水が給水され、圧縮Ｗ
１１は給水された水が５０℃昇温しで５５℃になるまで
運転を続ける。For example, water at 5°C is supplied into the hot water storage tank 6, and compressed W
11 continues to operate until the temperature of the supplied water increases by 50°C and reaches 55°C.
上述した従来のヒートポンプ式給湯装置では、給湯負荷
が生じて給湯を行ない、貯湯タンク内に給水された場合
には、例えば５℃の給水温度から例えば５５℃の貯湯設
定温度まで昇温させる必要があり、昇温幅が大きく昇温
に長時間を要し、給湯負荷が頻繁に生じる場合には昇温
能力を上げるために、装置を大形化する必要があるとい
う問題点があった。In the conventional heat pump water heater described above, when a hot water supply load occurs and hot water is supplied to the hot water storage tank, it is necessary to raise the temperature from the water supply temperature of, for example, 5°C to the hot water storage set temperature of, for example, 55°C. However, there is a problem in that the temperature rise range is large and it takes a long time to heat up, and when hot water supply loads occur frequently, it is necessary to increase the size of the device in order to increase the temperature rise capacity.
この発明は、上述した問題点を解決しで、貯湯タンクに
補給される水を比較的短時間で貯湯設定温度まで昇温さ
せることができ、また適度に過冷却をとることができて
、冷媒分配の改善、熱伝達率を図ることができ、能力の
向上ができるヒートポンプ式給湯装置を提供することを
目的としている。This invention solves the above-mentioned problems and can raise the temperature of the water replenished to the hot water storage tank to the hot water storage setting temperature in a relatively short period of time. The purpose of the present invention is to provide a heat pump water heater that can improve distribution, increase heat transfer coefficient, and improve performance.
この発明のヒートポンプ式給湯゛装置は、冷凍サイクル
の温水加熱用凝縮器と絞り装置との間の冷媒配管に給水
予熱用熱交換器を設け、給水予熱タンク内の水を貯湯タ
ンクに補給するようにするとともに、予熱水循環回路に
設けたポンプを、冷凍サイクルの上記凝縮器出口部の冷
媒温度および給水予熱タンク内の予熱水循環回路入口部
の給水温度の温度差を温度検出器で検出して制御し、こ
の温度検出器で検出した冷媒温度の両温度の差が所定値
以上になった場合とそれより小さい所定値未満になった
場合に予熱水循環回路に設けたポンプすなわち予熱水循
環ポンプを停止させるようにしたものである。The heat pump hot water supply device of the present invention includes a heat exchanger for preheating the water supply in the refrigerant pipe between the condenser for heating hot water in the refrigeration cycle and the throttling device, and replenishes the water in the water preheating tank to the hot water storage tank. At the same time, the pump installed in the preheated water circulation circuit is controlled by detecting the temperature difference between the refrigerant temperature at the outlet of the condenser of the refrigeration cycle and the feed water temperature at the inlet of the preheated water circulation circuit in the feedwater preheating tank using a temperature sensor. The pump provided in the preheating water circulation circuit, that is, the preheating water circulation pump, is stopped when the difference between the two refrigerant temperatures detected by this temperature sensor exceeds a predetermined value and when it becomes less than a smaller predetermined value. This is how it was done.
この発明のヒートポンプ式給湯装置は、以上のように構
成され、冷凍サイクルに設けた給水予熱用熱交換器で給
水予熱タンクの水を予熱し、この予熱された給水を貯湯
タンクに入るよ′うにしたので、貯湯タンクでの沸き上
がり時間が短縮され、また冷凍サイクル側では給水予熱
用熱交換器で冷却をとるようにしたので、能力、成績係
数の向上が可能となり、さらに温水加熱用凝縮器出口部
の冷媒温度と給水予熱タンク内の予熱水循環回路入口部
の給水温度との差を温度検出器で検出し、温度差が所定
範囲から外れた場合には予熱水循環ポンプを停止させる
ようにしたので、冷媒の圧縮機への液バツクを防止でき
る。The heat pump water heater of the present invention is configured as described above, and is configured such that the water in the water preheating tank is preheated by the water preheating heat exchanger provided in the refrigeration cycle, and the preheated water is supplied to the hot water storage tank. As a result, the boiling time in the hot water storage tank has been shortened, and since the refrigeration cycle side is cooled by a heat exchanger for preheating the water supply, it is possible to improve the capacity and coefficient of performance. A temperature detector detects the difference between the refrigerant temperature at the outlet and the feed water temperature at the inlet of the preheated water circulation circuit in the feedwater preheating tank, and the preheated water circulation pump is stopped if the temperature difference falls outside of a predetermined range. Therefore, liquid backflow of refrigerant to the compressor can be prevented.
以下、この発明の一実施例を第１図について説明する。 An embodiment of the present invention will be described below with reference to FIG.
第１図において、１４は冷凍サイクル、１５は温水循環
回路であり、これらは給湯配管１１、温水加熱用サーモ
スタット１２および熱源水配管１３とともに、上述した
第１図に示す従来のものとほぼ同様の構成である。１６
は給水予熱用熱交換器であり、この熱交換器１６は冷凍
サイクル１４の温水加熱用凝縮ｌＳ２と絞り装ｆｉ３と
の閏の冷媒配管５に設けられている。１７は給水予熱タ
ンク、１８は給水予熱タンク１７の下部と上記熱交換器
１６の水入口を接続する予熱水循環回路往路、１９は熱
交換ｎ１６の水出口と給水予熱タンク１７の上部を接続
する予熱水循環回路復路、２０は予熱水循環回路往路１
８に設けた予熱水循環ポンプであり、これらによって予
熱水循環回路２１が構成されている。２２は給水予熱タ
ンク１７の最上部と貯湯タンク６の最下部とを接続する
予熱水配管、２３は給水予熱タンク１７の最下部に接続
された給水配管であり、給水配管２３、給水予熱タンク
１７、予熱水配管２２、貯湯タンク６および給湯 −配
管１１が直列関係に配設されて給揚水流路２４が構成さ
れている。２５は冷凍サイクルの上記凝縮器２出口部お
よび給水予熱タンク１７の予熱水循環回路往路１８接続
部に設けた検出部２６および２７を有し、これらの検出
部２６．２７で検出した両温度の温度差を検出する温度
検出器である。In FIG. 1, 14 is a refrigeration cycle, and 15 is a hot water circulation circuit, which, together with hot water supply piping 11, hot water heating thermostat 12, and heat source water piping 13, are almost the same as the conventional ones shown in FIG. It is the composition. 16
is a feed water preheating heat exchanger, and this heat exchanger 16 is provided in the refrigerant pipe 5 between the hot water heating condensation lS2 of the refrigeration cycle 14 and the throttle device fi3. 17 is a feed water preheating tank, 18 is a preheating water circulation circuit outgoing path that connects the lower part of the feed water preheating tank 17 and the water inlet of the heat exchanger 16, and 19 is a preheater that connects the water outlet of the heat exchanger n16 and the upper part of the feed water preheating tank 17. Water circulation circuit return path, 20 is preheating water circulation circuit outbound path 1
8 is a preheated water circulation pump, and these constitute a preheated water circulation circuit 21. 22 is a preheating water pipe connecting the top of the water supply preheating tank 17 and the bottom of the hot water storage tank 6; 23 is a water supply pipe connected to the bottom of the water supply preheating tank 17; , the preheated water pipe 22, the hot water storage tank 6, and the hot water supply pipe 11 are arranged in series to form a pumped water flow path 24. Reference numeral 25 has detection sections 26 and 27 provided at the outlet of the condenser 2 of the refrigeration cycle and the connection section of the preheated water circulation circuit outgoing path 18 of the feed water preheating tank 17, and detects both temperatures detected by these detection sections 26 and 27. It is a temperature detector that detects the difference.
次に、以上のように構成された実施例のヒートポンプ式
給＃、ｖｃｒ！１の動作について説明する。温度検品５
２５は温水加熱用凝縮器２出口部の冷媒温度と給水予熱
タンク１７の予熱水循環回路往路１８接続部の予熱水温
度との温度差を検出し、この温度差が例えば１０℃以上
５５℃未満の設定範囲内にある場合に予熱水循環ポンプ
２０が運転され、予熱水が予熱水循環回路２１を循環す
る。すなわち、予熱水は、給水予熱タンク１７の下部か
ら出て予熱水循環回路往路１８を通り給水予熱眉熱交換
器１６を経て予熱水循環回路復路１９を通り、給水予熱
グンク１７の上部へ戻る。また、温水加熱用サーモスタ
ット１２は貯湯タンク６内の水温が５５℃未満の時に温
水循環ポンプ９お上り圧縮機１を運転させる。温水循環
ポンプ９の運転によって、温水は従来のものと同様に貯
湯タンク６と温水加熱用凝縮器２の開を循環する。一方
、圧縮機１の運転によって、冷媒ガスは圧縮されて高温
高圧〃スとなり、冷媒配管５を通って温水加熱用凝縮器
２に入る。ここで、冷媒は温水と熱交換し放熱すること
によって温水を加熱し、凝縮して高温液冷媒となる。こ
の時、冷媒は温水の流れ方向に対し向流方向に流れ、温
水は温水加熱用凝縮器２出口部で高温がス冷媒と熱交換
するために、温水出口温度を高くすることができる。凝
縮した高温液冷媒は給水予熱用熱交換器１６に入る。こ
の時、温度検出器２５の動作によって、冷媒温度が予熱
水温度より例えば１０〜５５℃高い場合には給水予熱用
熱交換器１６を予熱水が通っており、この予熱水と熱交
換しで予熱水を加熱する。これによって、冷媒は冷却さ
れるが過度の冷却を防止するために冷媒と予熱水を亜流
方向に流し、冷媒の出口温度が予熱水の出口温度よりも
低くならないようにしている。また、この熱交換は、冷
媒の潜熱変化を伴なわず、熱交換量は比較的小さく、冷
媒と予熱水の温度差が例えば１０℃未満の場合には、予
熱水循環ポンプ２０の消費動力に対して得られる予熱能
力が小さいため、予熱水循環ポンプ２０の運転を停止す
る。この場合には予熱水が上記熱交換器１６に通されな
いために、冷媒はほとんど温度変化することな（、熱交
換器１６を通過する。Next, heat pump type supply #, vcr! of the embodiment configured as described above! Operation 1 will be explained. Temperature inspection 5
25 detects the temperature difference between the refrigerant temperature at the outlet of the hot water heating condenser 2 and the preheated water temperature at the connection part of the preheated water circulation circuit outgoing path 18 of the feed water preheating tank 17. If it is within the set range, the preheated water circulation pump 20 is operated, and the preheated water circulates through the preheated water circulation circuit 21. That is, the preheated water comes out of the lower part of the feed water preheating tank 17, passes through the preheated water circulation circuit outward path 18, passes through the feed water preheating heat exchanger 16, passes through the preheated water circulation circuit return path 19, and returns to the upper part of the feed water preheating gunk 17. Further, the hot water heating thermostat 12 operates the hot water circulation pump 9 and the upstream compressor 1 when the water temperature in the hot water storage tank 6 is less than 55°C. By operating the hot water circulation pump 9, hot water is circulated between the hot water storage tank 6 and the hot water heating condenser 2 in the same manner as in the conventional system. On the other hand, by operating the compressor 1, the refrigerant gas is compressed to a high temperature and high pressure gas, and enters the hot water heating condenser 2 through the refrigerant pipe 5. Here, the refrigerant heats the hot water by exchanging heat with the hot water and releasing heat, and condenses to become a high-temperature liquid refrigerant. At this time, the refrigerant flows countercurrently to the flow direction of the hot water, and the high temperature of the hot water exchanges heat with the refrigerant at the outlet of the hot water heating condenser 2, so that the hot water outlet temperature can be increased. The condensed high temperature liquid refrigerant enters the feed water preheating heat exchanger 16. At this time, if the refrigerant temperature is, for example, 10 to 55 degrees Celsius higher than the preheated water temperature by the operation of the temperature detector 25, the preheated water is passing through the feed water preheating heat exchanger 16, and heat exchange with this preheated water is not possible. Heat preheated water. As a result, the refrigerant is cooled, but in order to prevent excessive cooling, the refrigerant and preheated water are allowed to flow in a subcurrent direction, so that the exit temperature of the refrigerant does not become lower than the exit temperature of the preheated water. In addition, this heat exchange does not involve a change in the latent heat of the refrigerant, and the amount of heat exchange is relatively small. Since the preheating capacity obtained is small, the operation of the preheating water circulation pump 20 is stopped. In this case, since the preheated water is not passed through the heat exchanger 16, the refrigerant passes through the heat exchanger 16 with almost no temperature change.
上記熱交換ｎ１６を出た液冷媒は、絞り装ｒ！ｔ３で減
圧されて低温低圧！冷媒となり、熱源ＩＩｌ蒸発器４に
入り、ここで熱源水配管１３から供給される熱源水から
吸熱して蒸発し、低温低圧ガス冷媒となって圧縮機１へ
戻る。そして、温度検出器２５は温水加熱用凝縮器２出
口部の冷媒温度が給水予熱タンク１７の予熱水循環回路
往路１８接続部の水温より例えば５５℃以上高い場合に
は予熱水循環ポンプ２０を停止し、予熱水が給水予熱用
熱交換器１６に通らないようにしている。これは、次の
理由による。すなわち、予熱水の温度が冷媒の温度に比
べて異常に低い場合に、冷媒と予熱水な−熱交換すると
、冷媒が過度に冷却された状態で絞り装置３を経て熱源
側蒸発器４に入ると、ここで冷媒の蒸発不足を生じ、圧
縮機１への液パツク事故を起こすことを防止する。また
、逆に予熱水温度がそれほど低くなく、冷媒の過冷却度
が比較的小さくても温水加熱用凝縮器２出口部の冷媒温
度が高い場合、つまり冷媒の高圧圧力が高い場合には、
絞り装ｆｉ３を冷媒が流れやすくなり、熱源側蒸発器４
へ多量の冷媒が流れ込み、冷媒の蒸発不足を生じ、圧縮
１ｆｉｌへの液パツク事故を起こすことを防止する。The liquid refrigerant exiting the heat exchanger n16 is subjected to a restrictor r! The pressure is reduced at t3, resulting in low temperature and low pressure! It becomes a refrigerant, enters the heat source II evaporator 4, absorbs heat from the heat source water supplied from the heat source water pipe 13, evaporates, and returns to the compressor 1 as a low-temperature, low-pressure gas refrigerant. Then, the temperature detector 25 stops the preheating water circulation pump 20 when the refrigerant temperature at the outlet of the hot water heating condenser 2 is higher, for example, by 55° C. or more than the water temperature at the connection portion of the preheating water circulation circuit outgoing path 18 of the feed water preheating tank 17. The preheated water is prevented from passing through the feed water preheating heat exchanger 16. This is due to the following reason. That is, when the temperature of the preheated water is abnormally low compared to the temperature of the refrigerant, when heat is exchanged between the refrigerant and the preheated water, the refrigerant enters the heat source side evaporator 4 through the expansion device 3 in an excessively cooled state. This prevents insufficient evaporation of the refrigerant from occurring, causing an accident in which the liquid packs into the compressor 1. Conversely, if the preheated water temperature is not so low and the degree of subcooling of the refrigerant is relatively small, but the refrigerant temperature at the outlet of the hot water heating condenser 2 is high, that is, if the high pressure of the refrigerant is high,
The refrigerant flows through the throttle device fi3 more easily, and the heat source side evaporator 4
This prevents a large amount of refrigerant from flowing into the refrigerant, resulting in insufficient evaporation of the refrigerant, and causing an accident in which liquid packs into the compressed 1fil.
そして、予熱水が循環している状態での冷凍サイクルは
第２図に示すようになる。第２図において、Ａｉは圧縮
機１の出口、Ｂ点は温水加熱用凝縮器２の出口、０点は
給水予熱用熱交換器１６の出口、Ｄ点は絞り装置３の出
口、Ｅ点は熱源側蒸発器４の出口すなわち圧縮Ｗ１１の
入口での冷媒圧力であり、このサイクルを繰９返えすこ
とにより、貯湯タンク６内の温水を加熱すると同時に、
給水予熱タンク１７内の予熱水を加熱する。The refrigeration cycle with preheated water circulating is as shown in FIG. 2. In Fig. 2, Ai is the outlet of the compressor 1, point B is the outlet of the hot water heating condenser 2, point 0 is the outlet of the heat exchanger 16 for preheating feed water, point D is the outlet of the expansion device 3, and point E is the outlet of the condenser 2 for heating hot water. This is the refrigerant pressure at the outlet of the heat source side evaporator 4, that is, the inlet of the compressor W11, and by repeating this cycle nine times, the hot water in the hot water storage tank 6 is heated, and at the same time,
The preheated water in the water supply preheating tank 17 is heated.
また、温水が次第に加熱されて貯湯タンク６内の水温が
例えば５５℃に迷すると、温水加熱用サーモスタット１
２によって温水循環ポンプ９および圧縮ＦＩＲ１の運転
を停止し、温水の加熱を終了する。圧縮機１が停止する
と、温水加熱用凝縮器２８０部の冷媒温度は次第に低く
なり、このため温度検出器２５が検出する温度差も小さ
くなり、予熱水循環ポンプ２０の運転を停止する。さら
に、給湯負荷が生じ、給湯配管１１から給湯されると、
予熱水配管２２を通じて給水予熱クンク１７の上部から
貯湯タンク６内に例えば３０℃の予熱水が補給される。In addition, when the hot water is gradually heated and the water temperature in the hot water storage tank 6 reaches, for example, 55°C, the hot water heating thermostat 1
2, the operation of the hot water circulation pump 9 and the compression FIR 1 is stopped, and heating of the hot water is ended. When the compressor 1 stops, the refrigerant temperature in the hot water heating condenser 280 section gradually decreases, and therefore the temperature difference detected by the temperature detector 25 also becomes smaller, and the operation of the preheating water circulation pump 20 is stopped. Furthermore, when a hot water supply load occurs and hot water is supplied from the hot water supply piping 11,
Preheated water at, for example, 30° C. is supplied into the hot water storage tank 6 from the upper part of the water supply preheating tank 17 through the preheated water pipe 22 .
これによって、温水加熱用サーモスタット１２の温度検
出部が例えば５５℃未満になると、温水循環ポンプ９お
よび圧縮Ｗ１１が運転されて温水加熱運転を再開する。As a result, when the temperature detection part of the hot water heating thermostat 12 becomes lower than, for example, 55° C., the hot water circulation pump 9 and the compression W11 are operated to restart the hot water heating operation.
圧ｍ’ｆ！１１の運転が再Ｗｌｉされると、温水加熱用
凝縮器２出口部の冷媒温度が上がり、温度検出器２５の
動作によって、予熱水１１！ｌ！ポンプ２０が運転され
て予熱水加熱運転を再開する。Pressure m'f! 11 is restarted, the temperature of the refrigerant at the outlet of the hot water heating condenser 2 rises, and the operation of the temperature detector 25 causes the preheated water 11! l! The pump 20 is operated to restart the preheated water heating operation.
この実施例の給湯装置では、上述したように、温水加熱
用凝縮器２で貯湯タンク６の温水を加熱すると同時に、
給水予熱用熱交換器１６で給水予熱タンク１７の予熱水
を加熱するため、貯湯タンク６には、給水が予熱された
後に補給され、従って貯湯タンク６での必要な沸き上げ
温度幅が小さい、また、冷凍サイクル１４側では過冷却
がとれた状態で冷媒が絞り装置３に入って減圧されてか
ら熱源側蒸発器４に入るため、この蒸発器４での冷媒の
分配が改善され、しかも乾き度の小さい状態で冷媒が熱
源ｆＩ！１ｆｌｋ発器４を通過して蒸発するため、熱伝
達率が向上し、従って、上記蒸発器４の能力が増大する
結果となる。In the water heater of this embodiment, as described above, the hot water heating condenser 2 heats the hot water in the hot water storage tank 6, and at the same time,
Since the preheated water in the water supply preheating tank 17 is heated by the water supply preheating heat exchanger 16, the hot water storage tank 6 is replenished with the water after it has been preheated, and therefore the necessary boiling temperature range in the hot water storage tank 6 is small. Furthermore, on the refrigeration cycle 14 side, the refrigerant enters the throttling device 3 in a state where it has been supercooled, is depressurized, and then enters the heat source side evaporator 4, so the distribution of the refrigerant in the evaporator 4 is improved, and The refrigerant is the heat source fI when the temperature is small! Since it passes through the 1flk generator 4 and is evaporated, the heat transfer coefficient is improved, thus resulting in an increase in the capacity of the evaporator 4.
なお、上述した実施例では水熱源方式の場合について説
明したが、この発明は空気熱源方式でもよく、これも上
述の実施例と同様な効果が得られる。In addition, although the above-mentioned embodiment explained the case of a water heat source system, this invention may also be an air heat source system, and the same effect as the above-mentioned embodiment can also be obtained.
以上説明したように、この発明によれば、冷凍サイクル
の温水加熱用凝縮器と絞り［１１！との間に給水予熱用
熱交換器を設け、この熱交換器で予熱された給水が給水
予熱タンクから貯湯タンクに入るように構成したので、
貯湯タンクでの沸き上がり時間が短縮される。また、こ
の発明は、冷凍サイクル側では給水予熱用熱交換器で過
冷却をとるため、熱源側蒸発器の冷媒分配の改善、熱伝
達率の向上を図ることができ、従って、能力、成績係数
アップが可能となる。さらに、この発明によれば、温水
加熱用凝縮器出口部の冷媒温度と給水予熱タンク内の予
熱水循環回路入口部の給水温度との差を温度検出器で検
出し、温度差が所定値以上の場合およびこれより小さい
所定値未満の場合には予熱水循環ポンプを停止させるよ
うにしたので、過冷却のとれすぎによる冷媒の液バツク
および高圧力差条件になるための液パツクを防止できる
という効果が得られる。As explained above, according to the present invention, the condenser for heating hot water of the refrigeration cycle and the throttle [11! A heat exchanger for preheating the water supply was installed between the water supply and the water supply, and the water supply preheated by the heat exchanger entered the hot water storage tank from the water preheating tank.
Boiling time in the hot water tank is shortened. In addition, this invention achieves supercooling on the refrigeration cycle side using the feed water preheating heat exchanger, so it is possible to improve the refrigerant distribution in the heat source side evaporator and the heat transfer coefficient, thereby improving the capacity and coefficient of performance. Up is possible. Further, according to the present invention, a temperature detector detects the difference between the refrigerant temperature at the outlet of the hot water heating condenser and the feed water temperature at the inlet of the preheated water circulation circuit in the feed water preheating tank, and when the temperature difference is equal to or higher than a predetermined value, Since the preheating water circulation pump is stopped when the temperature is lower than the predetermined value, the preheating water circulation pump is stopped, which has the effect of preventing refrigerant liquid back-up due to excessive supercooling and liquid pack-up due to high pressure difference conditions. can get.
第１図はこの発明の一実施例によるヒートポンプ式給湯
装置の構成説明図、ｔｌ＆２図はこの発明の一実施例に
よる給湯装置のモリエル線図、第３図は従来のヒートポ
ンプ式給湯装置の構成説明図、第４図は従来の給＃、装
置のモリエル線図である。
１・・・圧縮機、２・・・温水加熱用凝縮器、３・・・
絞り装置、４・・・熱源＠蒸発器、５・・・冷媒配管、
６・・・貯湯タンク、１１・・・給湯配管、１４・・・
冷凍サイクル、１５・・・温水循環回路、１６・・・給
水予熱用熱交換器、１７・・・給水予熱タンク、２０・
・・予熱水循環ポンプ、２１・・・予熱水循環回路、２
２・・・予熱水配管、２３・・・給水配管、２４・・・
給揚水流路、２５・・・温度検出器。
なお、図中同一符号は同一または相当部分を示す。
代理人 大 岩 増 雄（ほか２名）
第１図
２り：屋し父、Ｕヱ昏
第２ｒｌ！Ｊ
七か？
第３図
第４図
力作１
手続補正書（自発）
Ｉ′ｆ′？３１′、直
１、事件の表示 特願昭１５９−２７１５４０号２
、発明の名称 ヒートポンプ式給湯装置３、補正を
する者
事件との関係 特許出願人
住 所 東京都千代田区丸の内二丁目２番３号名
称 （６０１）三菱電機株式会社代表者片山仁八部
４、代理人
＆補正の対象
（１） 明細書の発明の詳細な説明の橿ａ補正の内容
（１） ｒｒＡ細書をつぎのとおり訂正する。Fig. 1 is an explanatory diagram of the configuration of a heat pump water heater according to an embodiment of the present invention, Figures TL & 2 are Mollier diagrams of the water heater according to an embodiment of the invention, and Fig. 3 is an explanatory diagram of the configuration of a conventional heat pump water heater. FIG. 4 is a Mollier diagram of a conventional feed # and device. 1...Compressor, 2...Condenser for hot water heating, 3...
Throttle device, 4... Heat source @ evaporator, 5... Refrigerant piping,
6...Hot water storage tank, 11...Hot water supply piping, 14...
Refrigeration cycle, 15... Hot water circulation circuit, 16... Heat exchanger for preheating water supply, 17... Water preheating tank, 20.
・・Preheating water circulation pump, 21 ・・Preheating water circulation circuit, 2
2... Preheating water piping, 23... Water supply piping, 24...
Pumped water flow path, 25...temperature detector. Note that the same reference numerals in the figures indicate the same or corresponding parts. Agent Masuo Oiwa (and 2 others) Figure 1 2: Yashichichi, Ueko 2nd rl! J Seven? Figure 3 Figure 4 Masterpiece 1 Procedural amendment (voluntary) I'f'? 31', Line 1, Incident Display, Patent Application No. 159-271540, No. 2
, Title of the invention Heat pump water heater 3, Relationship to the case of the person making the amendment Patent applicant address 2-2-3 Marunouchi, Chiyoda-ku, Tokyo Name (601) Mitsubishi Electric Corporation Representative Jinhachibe Katayama 4 , Agent & Subject of amendment (1) Contents of amendment to the detailed explanation of the invention in the specification (1) The rrA specification is corrected as follows.
Claims (1)
発器を順次冷媒配管で接続するとともに上記凝縮器と絞
り装置との間の冷媒配管に給水予熱用熱交換器を設けた
冷凍サイクルと、給水配管に接続した給水予熱タンク、
この給水予熱タンクと貯湯タンクとを接続する予熱水配
管および上記貯湯タンクに接続した給湯配管を直列関係
に配設した給揚水流路と、上記凝縮器に貯湯タンク内の
温水を循環させて熱交換させるための温水循環回路と、
予熱水循環ポンプを有し上記給水予熱用熱交換器に給水
予熱タンク内の水を循環させて熱交換させる予熱水循環
回路と、上記冷凍サイクルの温水加熱用凝縮器の出口部
の冷媒温度および給水予熱タンク内の予熱水循環回路入
口部の給水温度を検出する温度検出器とを備え、この温
度検出器で検出した両温度の差が所定値以上となった場
合とそれより小さい所定値未満になった場合に上記予熱
水循環ポンプを停止させるようにしたことを特徴とする
ヒートポンプ式給湯装置。A refrigeration cycle in which a compressor, a hot water heating condenser, a throttling device, and a heat source side evaporator are sequentially connected by refrigerant piping, and a feed water preheating heat exchanger is provided in the refrigerant piping between the condenser and the throttling device. , a water supply preheating tank connected to the water supply piping,
A preheating water pipe connecting the water supply preheating tank and the hot water storage tank and a hot water supply pipe connected to the hot water storage tank are arranged in series, and the hot water in the hot water storage tank is circulated through the condenser to generate heat. A hot water circulation circuit for exchanging
A preheating water circulation circuit that has a preheating water circulation pump and circulates water in the feedwater preheating tank to the feedwater preheating heat exchanger for heat exchange; and a refrigerant temperature at the outlet of the hot water heating condenser of the refrigeration cycle and the feedwater preheating. Equipped with a temperature detector that detects the supply water temperature at the inlet of the preheated water circulation circuit in the tank, and when the difference between the two temperatures detected by this temperature detector exceeds a predetermined value or falls below a smaller predetermined value. 1. A heat pump type hot water supply device, characterized in that the preheated water circulation pump is stopped when the preheated water circulation pump is turned off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59271540A JPS61149759A (en) | 1984-12-21 | 1984-12-21 | Heat pump type hot water supply apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59271540A JPS61149759A (en) | 1984-12-21 | 1984-12-21 | Heat pump type hot water supply apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61149759A true JPS61149759A (en) | 1986-07-08 |
Family
ID=17501485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59271540A Pending JPS61149759A (en) | 1984-12-21 | 1984-12-21 | Heat pump type hot water supply apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61149759A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH033665U (en) * | 1989-05-30 | 1991-01-16 | ||
| JP2012510605A (en) * | 2008-12-02 | 2012-05-10 | ヴァルメパンペン エーエス | Interlocked operation heat pump / air conditioner |
| ITTO20111134A1 (en) * | 2011-12-12 | 2013-06-13 | Innovation Factory Scarl | HEAT PUMP UNIT AND PROCEDURE FOR COOLING AND / OR HEATING THROUGH THIS HEAT PUMP UNIT |
| KR101382493B1 (en) * | 2013-10-10 | 2014-04-07 | 주식회사에이멕스 | Cooling and heating system |
| JP2014169819A (en) * | 2013-03-04 | 2014-09-18 | Miura Co Ltd | Feedwater heating system |
| JP2014169818A (en) * | 2013-03-04 | 2014-09-18 | Miura Co Ltd | Feedwater heating system |
| EP2800934B1 (en) * | 2011-12-12 | 2019-09-18 | Teon S.R.L. | High performance heat pump unit |
-
1984
- 1984-12-21 JP JP59271540A patent/JPS61149759A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH033665U (en) * | 1989-05-30 | 1991-01-16 | ||
| JP2012510605A (en) * | 2008-12-02 | 2012-05-10 | ヴァルメパンペン エーエス | Interlocked operation heat pump / air conditioner |
| ITTO20111134A1 (en) * | 2011-12-12 | 2013-06-13 | Innovation Factory Scarl | HEAT PUMP UNIT AND PROCEDURE FOR COOLING AND / OR HEATING THROUGH THIS HEAT PUMP UNIT |
| EP2800934B1 (en) * | 2011-12-12 | 2019-09-18 | Teon S.R.L. | High performance heat pump unit |
| JP2014169819A (en) * | 2013-03-04 | 2014-09-18 | Miura Co Ltd | Feedwater heating system |
| JP2014169818A (en) * | 2013-03-04 | 2014-09-18 | Miura Co Ltd | Feedwater heating system |
| KR101382493B1 (en) * | 2013-10-10 | 2014-04-07 | 주식회사에이멕스 | Cooling and heating system |
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