JPH0147701B2 - - Google Patents
Info
- Publication number
- JPH0147701B2 JPH0147701B2 JP4345582A JP4345582A JPH0147701B2 JP H0147701 B2 JPH0147701 B2 JP H0147701B2 JP 4345582 A JP4345582 A JP 4345582A JP 4345582 A JP4345582 A JP 4345582A JP H0147701 B2 JPH0147701 B2 JP H0147701B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- temperature
- heat exchanger
- hot water
- flow rate
- 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 170
- 238000009835 boiling Methods 0.000 claims description 18
- 239000003507 refrigerant Substances 0.000 claims description 16
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 3
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007787 solid Substances 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
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)
Description
【発明の詳細な説明】
本発明は、送風機を有する空気熱交換器を用い
た冷媒循環回路を具備したヒートポンプ給湯装置
に関するものであり、沸上完了後のタンク中の湯
温をより沸上設定温度に近づけるようにしたもの
である。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heat pump water heater equipped with a refrigerant circulation circuit using an air heat exchanger with a blower, and the water temperature in the tank after boiling is set to a higher boiling point. It is designed to be close to the temperature.
従来のヒートポンプ給湯装置について、第１
図、第２図を参考に説明する。 Regarding conventional heat pump water heaters, the first
This will be explained with reference to FIGS.
第１図は従来例におけるヒートポンプ給湯装置
における冷媒循環回路および、給湯回路の概略図
である。本図において、給湯回路は、貯湯タンク
１、循環ポンプ２、給湯用水熱交換器３の水通路
３ａを環状に連結して構成されていた。冷媒循環
回路は、圧縮機４、前記給湯用熱交換器３の冷媒
通路３ｂ、減圧装置５および、空気熱交換器６を
環状に連結して構成されていた。更に７は前記空
気熱交換器６の送風機、８は前記給湯用水熱交換
器３に設けた、サーミスタ等からなる感温抵抗素
子である。また図中、実線矢印は水の流通方向、
破線矢印は冷媒の流通方向を示す。 FIG. 1 is a schematic diagram of a refrigerant circulation circuit and a hot water supply circuit in a conventional heat pump water heater. In this figure, the hot water supply circuit was constructed by connecting a hot water storage tank 1, a circulation pump 2, and a water passage 3a of a water heat exchanger 3 in a ring shape. The refrigerant circulation circuit was constructed by connecting a compressor 4, a refrigerant passage 3b of the hot water supply heat exchanger 3, a pressure reducing device 5, and an air heat exchanger 6 in an annular manner. Furthermore, 7 is a blower of the air heat exchanger 6, and 8 is a temperature-sensitive resistance element such as a thermistor provided in the water heat exchanger 3 for hot water supply. In addition, in the figure, the solid arrow indicates the direction of water flow.
The dashed arrow indicates the direction of flow of the refrigerant.
上記給湯装置において、空気熱交換器６と送風
機７によつて空気中より得た熱は、圧縮機４によ
り高温高圧となり、給湯用水熱交換器３中で、水
に伝えられる。このときの給湯用水熱交換器３の
水流入口の水温と水流出口の水温の関係を第２図
に示す。横軸は給湯装置始動後の経過時間、縦軸
は湯温℃を示す。９−ａは給湯用水熱交換器３の
水流出口、１０−ａは給湯用水熱交換器３の水流
入口の水温と時間の関係をそれぞれ示すものであ
る。またTaは沸上設定湯温、Tbは、給湯用水熱
交換器３の水流出口の水温がTaに達したときの
給湯用水熱交換器３の水流入口の水温である。 In the hot water supply system, heat obtained from the air by the air heat exchanger 6 and the blower 7 is made high temperature and high pressure by the compressor 4, and is transferred to water in the water heat exchanger 3 for hot water supply. FIG. 2 shows the relationship between the water temperature at the water inlet and the water temperature at the water outlet of the water heat exchanger 3 for hot water supply at this time. The horizontal axis shows the elapsed time after starting the water heater, and the vertical axis shows the hot water temperature in °C. 9-a indicates the water outlet of the water heat exchanger 3 for hot water supply, and 10-a indicates the relationship between water temperature and time at the water inlet of the water heat exchanger 3 for hot water supply. Further, Ta is the set boiling water temperature, and Tb is the water temperature at the water inlet of the water heat exchanger 3 for hot water supply when the water temperature at the water outlet of the water heat exchanger 3 for hot water supply reaches Ta.
上記の従来の給湯装置においては、沸上が完了
したことを感温抵抗素子８が検出し給湯装置が運
転を停止したとき、貯湯タンク１中の湯温には、
入口水温Tbから沸上設定温度Taまでの差がで
き、この差が、かなり大きく、沸上設定温度Ta
の湯が貯湯タンク１中に得られないという欠点が
あつた。 In the above-mentioned conventional water heater, when the temperature-sensitive resistance element 8 detects that boiling has been completed and the water heater stops operating, the temperature of the water in the hot water storage tank 1 is as follows.
There is a difference between the inlet water temperature Tb and the set boiling temperature Ta, and this difference is quite large and the set boiling temperature Ta
The disadvantage was that the hot water could not be obtained in the hot water storage tank 1.
本発明は上記欠点を軽減するためになされたも
ので、給湯用水熱交換器３の水流入口の水温が設
定温度以上になつた場合、流量調整弁を動作させ
て流量を増加させることにより、沸上完了後の貯
湯タンク１中の湯温をより沸上設定温度に近づけ
ることを目的とするものである。 The present invention has been made to alleviate the above-mentioned drawbacks, and when the water temperature at the water inlet of the water heat exchanger 3 for hot water supply exceeds the set temperature, the flow rate adjustment valve is operated to increase the flow rate. The purpose is to bring the temperature of the hot water in the hot water storage tank 1 closer to the set boiling temperature after the boiling is completed.
以下に本発明の一実施例におけるヒートポンプ
給湯装置について第３図ないし第５図を参考に説
明する。本図において、第１図と同一のものは同
一番号を付して説明を省略する。第３図におい
て、９は給湯回路中の循環ポンプ２と給湯用水熱
交換器３の水通路３ａの間に設けた流量調整弁、
１０は給湯用水熱交換器３の水流入口に設けたサ
ーミスタ等からなる感温抵抗素子、１１は、感温
抵抗素子１０の検出温度により、流量調整弁９の
流量を調整する制御装置である。本発明の一実施
例におけるヒートポンプ給湯装置の水加熱の原理
は第１図に示した従来の給湯装置と同様である。
次に第４図により流量調整弁９の制御装置１１の
説明を行う。 A heat pump water heater according to an embodiment of the present invention will be described below with reference to FIGS. 3 to 5. In this figure, parts that are the same as those in FIG. 1 are given the same numbers and their explanations will be omitted. In FIG. 3, 9 is a flow rate regulating valve provided between the circulation pump 2 in the hot water supply circuit and the water passage 3a of the water heat exchanger 3 for hot water supply;
10 is a temperature-sensitive resistance element such as a thermistor provided at the water inlet of the water heat exchanger 3 for hot water supply; 11 is a control device that adjusts the flow rate of the flow rate regulating valve 9 based on the temperature detected by the temperature-sensitive resistance element 10. The principle of water heating in the heat pump water heater according to an embodiment of the present invention is the same as that of the conventional water heater shown in FIG.
Next, the control device 11 for the flow rate regulating valve 9 will be explained with reference to FIG.
第４図において、１２−１，１２−２は同一の
抵抗値を有する抵抗器、１３は可変抵抗器で、感
温抵抗素子１０と抵抗器１２−１の接続部はバツ
フア１４を介してコンパレータ１５の−入力端子
に接続されている。また抵抗器１２−２と可変抵
抗器１３の接続部はコンパレータ１５の＋入力端
子に接続されている。さらにコンパレータ１５の
出力端子にはドライバー１６が、またこのドライ
バー１６にはリレー１７が接続されている。１７
−ａはリレー１７の通電時短絡接片で、リレー１
７の通電時に、バツフア１４の出力と抵抗器１８
を短絡する。また１７−ｂはリレー１７の無通電
時短絡接片で、リレー１７の無通電時、抵抗器１
９を電源に短絡する。抵抗器１８と１９は抵抗器
２０とトランジスタ２１のベースに接続されてい
る。抵抗器２２はエミツタ抵抗、ヒータ２３は、
流量調整弁のバイメタルの回りに巻きつけられて
おり、流量は、このバイメタルの変位で調整され
る。 In FIG. 4, 12-1 and 12-2 are resistors having the same resistance value, 13 is a variable resistor, and the connection between the temperature-sensitive resistance element 10 and the resistor 12-1 is connected to a comparator via a buffer 15 - input terminal. Further, the connection portion between the resistor 12 - 2 and the variable resistor 13 is connected to the + input terminal of the comparator 15 . Further, a driver 16 is connected to the output terminal of the comparator 15, and a relay 17 is connected to the driver 16. 17
-a is a short-circuit contact when relay 17 is energized;
7 is energized, the output of buffer 14 and resistor 18
short circuit. In addition, 17-b is a short-circuit contact when the relay 17 is not energized, and when the relay 17 is not energized, the resistor 1
9 to the power supply. Resistors 18 and 19 are connected to resistor 20 and the base of transistor 21. The resistor 22 is an emitter resistance, and the heater 23 is
It is wrapped around the bimetal of the flow rate regulating valve, and the flow rate is adjusted by the displacement of this bimetal.
上記構成において、本発明装置の動作を第２
図、第５図を参考にして説明する。第５図は第２
図同様、横軸は給湯装置始動後の経過時間、縦軸
は湯温℃を示し、９−ｂは給湯用水熱交換器３の
水流出口の、１０−ｂは水流入口の水温の時間に
対する変化を示すものである。感温抵抗素子１０
にて、給湯用水熱交換器３の水流入口の水温が
Tcであることを検出した場合、コンパレータ１
５の出力が“高”から“低”に反転するよう、可
変抵抗１３を設定する。水温Tcは水温Tbより数
℃低めに設定する。給湯用水熱交換器３の水流入
口の水温がTcより低い場合には、コンパレータ
１５の出力は“高”となつていて、ドライバー１
６は動作せず、リレー１７は通電されない。その
ためトランジスタ２１のベースには電源電圧を抵
抗器１９と抵抗器２０によつて分割した一定電圧
がかかる。その結果、ヒータ２３には一定電流が
流れ、バイメタルの変位は一定となり、流量調整
弁９の流量は一定となる。 In the above configuration, the operation of the device of the present invention is controlled by the second
This will be explained with reference to FIG. Figure 5 is the second
As in the figure, the horizontal axis shows the elapsed time after starting the water heater, and the vertical axis shows the hot water temperature in °C. 9-b shows the change in water temperature at the water outlet of the water heat exchanger 3 for hot water supply, and 10-b shows the change in water temperature at the water inlet over time. This shows that. Temperature sensitive resistance element 10
, the water temperature at the water inlet of water heat exchanger 3 for hot water supply is
If it is detected that Tc, comparator 1
The variable resistor 13 is set so that the output of the circuit 5 is inverted from "high" to "low". Water temperature Tc is set several degrees lower than water temperature Tb. When the water temperature at the water inlet of the hot water heat exchanger 3 is lower than Tc, the output of the comparator 15 is "high" and the driver 1
6 is not operated and relay 17 is not energized. Therefore, a constant voltage obtained by dividing the power supply voltage by resistor 19 and resistor 20 is applied to the base of transistor 21 . As a result, a constant current flows through the heater 23, the displacement of the bimetal becomes constant, and the flow rate of the flow rate regulating valve 9 becomes constant.
給湯用水熱交換器３の水流入口の水温がTc以
上になると、コンパレータ１５の出力は“低”と
なり、ドライバー１６が動作し、リレー１７が通
電される。そのため、通電時短絡接片１７−ａが
閉、無通電時短絡接片１７−ｂは開となり、トラ
ンジスタ２１のベースには、バツフア１４の＋入
力端子の電圧を抵抗器１８と抵抗器２０によつて
分割した電圧がかかる。この電圧は感温抵抗素子
１０の温度上昇とともに増加する。そのため、ヒ
ータ２３を流れる電流も感温抵抗素子１０の温度
上昇とともに増加し、流量調整弁９の流量も増加
する。その結果、給湯用水熱交換器３中の冷媒通
路３ｂの圧力低下にともない高温高圧冷媒の凝縮
温度が低下し、給湯用水熱交換器３の水流出口の
水温は低下するが、時間の経過にともない、給湯
用水熱交換器３の水流入口の水温の上昇率が大き
くなり、給湯用水熱交換器３中の冷媒通路３ｂの
圧力上昇にともない高温高圧冷媒の凝縮温度が上
昇し、給湯用水熱交換器３の水流出口の水温は再
び上昇し、感温抵抗素子８が、沸上設定温度に達
したことを検出すると、給湯装置の運転は停止さ
れる。このときの貯湯タンク１中の湯温Tb′から
Taまでの差がある。従来の給湯装置の場合と比
較すると、流量を増加させることで湯温Tb以上
の給湯用水熱交換器３の水流入口の水を昇温する
ことができ、（Ta−Tb）＜（Ta−Tb′）となり、
沸上完了後の貯湯タンク１中の湯温をより沸上設
定温度に近づけ、充分な湯温の確保ができる。 When the water temperature at the water inlet of the water heat exchanger 3 for hot water supply becomes equal to or higher than Tc, the output of the comparator 15 becomes "low", the driver 16 operates, and the relay 17 is energized. Therefore, the shorting contact 17-a is closed when energized, and the shorting contact 17-b is open when not energized. Therefore, divided voltages are applied. This voltage increases as the temperature of the temperature sensitive resistance element 10 rises. Therefore, the current flowing through the heater 23 also increases as the temperature of the temperature-sensitive resistance element 10 rises, and the flow rate of the flow rate regulating valve 9 also increases. As a result, the condensation temperature of the high-temperature, high-pressure refrigerant decreases as the pressure in the refrigerant passage 3b in the water heat exchanger 3 for hot water supply decreases, and the water temperature at the water outlet of the water heat exchanger 3 for hot water supply decreases, but as time passes. , the rate of increase in water temperature at the water inlet of the water heat exchanger 3 for hot water supply increases, and as the pressure in the refrigerant passage 3b in the water heat exchanger 3 for hot water supply increases, the condensation temperature of the high temperature and high pressure refrigerant increases, and the temperature of the water heat exchanger 3 for hot water supply increases. The water temperature at the water outlet 3 rises again, and when the temperature-sensitive resistance element 8 detects that the boiling temperature has been reached, the operation of the water heater is stopped. From the hot water temperature Tb′ in hot water storage tank 1 at this time
There is a difference up to Ta. Compared to the case of a conventional water heater, by increasing the flow rate, it is possible to raise the temperature of the water at the water inlet of the hot water heat exchanger 3 whose temperature is higher than the hot water temperature Tb, and (Ta-Tb) < (Ta-Tb ′),
The temperature of the water in the hot water storage tank 1 after completion of boiling is brought closer to the set boiling temperature, and sufficient water temperature can be ensured.
以上の実施例の説明より明らかなように本発明
のヒートポンプ給湯装置は、圧縮機、給湯用水熱
交換器の冷媒通路、減圧装置および空気熱交換器
を環状に連結して冷媒循環回路を構成し、前記給
湯用水熱交換器の水通路に、貯湯タンク、循環ポ
ンプ、流量調整弁給湯用水熱交換器の沸上設定湯
温を検出する温度検出器を具備し、前記給湯用水
熱交換器の水流入口に水温検出装置を設け、前記
水温検出装置が前記沸上設定湯温より低い設定温
度以上を検出した時に流量を増加するように前記
流量調整弁を制御する装置を設けたものである。 As is clear from the description of the embodiments above, the heat pump water heater of the present invention comprises a refrigerant circulation circuit by connecting a compressor, a refrigerant passage of a water heat exchanger for hot water supply, a pressure reducing device, and an air heat exchanger in an annular manner. , a water passage of the water heat exchanger for hot water supply is equipped with a temperature detector for detecting a hot water temperature set for boiling of the water heat exchanger for hot water supply, including a hot water storage tank, a circulation pump, and a flow rate adjustment valve; A water temperature detection device is provided at the inlet, and a device is provided for controlling the flow rate regulating valve so as to increase the flow rate when the water temperature detection device detects a set temperature lower than the boiling water temperature setting.
従つて、本発明のヒートポンプ給湯装置によれ
ば、沸上完了前に前記給湯用水熱交換器中の水の
流量を増加させることで、沸上完了後の前記貯湯
タンク中の湯温を沸上設定温度に近づけ、充分な
湯温を確保できる効果を有する。 Therefore, according to the heat pump water heater of the present invention, by increasing the flow rate of water in the water heat exchanger for hot water supply before the completion of boiling, the temperature of the water in the hot water storage tank after the completion of boiling can be increased to a boiling point. It has the effect of bringing the temperature close to the set temperature and ensuring sufficient water temperature.
第１図は従来例のヒートポンプ給湯装置におけ
る給湯回路および冷媒循環回路図、第２図は従来
例の給湯用水熱交換器の水流入口と水流出口の水
温の関係を示す特性図、第３図は本発明の一実施
例におけるヒートポンプ給湯装置の給湯回路およ
び冷媒循環回路、第４図は同ヒートポンプ給湯装
置の制御回路図、第５図は同ヒートポンプ給湯装
置に用いた給湯用水熱交換器の水流入口と水流出
口の水温の関係を示す特性図である。
１……貯湯タンク、２……循環ポンプ、３……
給湯用水熱交換器、３ａ……水通路、３ｂ……冷
媒通路、４……圧縮機、５……減圧装置、６……
空気熱交換器、８……感温抵抗素子、９……流量
調整弁、１０……感温抵抗素子、１１……制御装
置。
Fig. 1 is a hot water supply circuit and refrigerant circulation circuit diagram in a conventional heat pump water heater, Fig. 2 is a characteristic diagram showing the relationship between water temperature at the water inlet and water outlet of a conventional water heat exchanger for hot water supply, and Fig. 3 is A hot water supply circuit and a refrigerant circulation circuit of a heat pump water heater according to an embodiment of the present invention, FIG. 4 is a control circuit diagram of the heat pump water heater, and FIG. 5 is a water inlet of a water heat exchanger for hot water supply used in the heat pump water heater. FIG. 3 is a characteristic diagram showing the relationship between the water temperature and the water temperature at the water outlet. 1...Hot water storage tank, 2...Circulation pump, 3...
Water heat exchanger for hot water supply, 3a...water passage, 3b...refrigerant passage, 4...compressor, 5...compressor, 6...
Air heat exchanger, 8... Temperature-sensitive resistance element, 9... Flow rate adjustment valve, 10... Temperature-sensitive resistance element, 11... Control device.
Claims (1)
装置および空気熱交換器を環状に連結して冷媒循
環回路を構成し、前記給湯用水熱交換器の水通路
に、貯湯タンク、循環ポンプ、流量調整弁、給湯
用水熱交換器の沸上設定湯温を検出する温度検出
器を具備し、前記給湯用水熱交換器の水流入口に
水温検出装置を設け、前記水温検出装置が前記沸
上設定湯温より低い設定温度以上を検出した時、
流量を増加せしめるように前記流量調整弁を制御
する制御装置を設けたヒートポンプ給湯装置。1 A compressor, a refrigerant passage of a water heat exchanger for hot water supply, a pressure reducing device, and an air heat exchanger are connected in a ring to form a refrigerant circulation circuit, and a hot water storage tank, a circulation pump, It is equipped with a flow rate adjustment valve and a temperature detector for detecting the boiling set water temperature of the water heat exchanger for hot water supply, a water temperature detecting device is provided at the water inlet of the water heat exchanger for hot water supply, and the water temperature detecting device detects the boiling setting water temperature of the water heat exchanger for hot water supply. When a temperature higher than the set temperature is detected, which is lower than the water temperature,
A heat pump water heater including a control device that controls the flow rate regulating valve to increase the flow rate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57043455A JPS58158447A (en) | 1982-03-17 | 1982-03-17 | heat pump water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57043455A JPS58158447A (en) | 1982-03-17 | 1982-03-17 | heat pump water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58158447A JPS58158447A (en) | 1983-09-20 |
| JPH0147701B2 true JPH0147701B2 (en) | 1989-10-16 |
Family
ID=12664172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57043455A Granted JPS58158447A (en) | 1982-03-17 | 1982-03-17 | heat pump water heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58158447A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104676739A (en) * | 2013-11-29 | 2015-06-03 | 山东鲁润热能科技有限公司 | Heat-supply network heater |
-
1982
- 1982-03-17 JP JP57043455A patent/JPS58158447A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58158447A (en) | 1983-09-20 |
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