JPS5997448A - Hot water feeder - Google Patents
Hot water feederInfo
- Publication number
- JPS5997448A JPS5997448A JP57207365A JP20736582A JPS5997448A JP S5997448 A JPS5997448 A JP S5997448A JP 57207365 A JP57207365 A JP 57207365A JP 20736582 A JP20736582 A JP 20736582A JP S5997448 A JPS5997448 A JP S5997448A
- Authority
- JP
- Japan
- Prior art keywords
- hot water
- storage tank
- temperature
- comparator
- water storage
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 72
- 230000002528 anti-freeze Effects 0.000 claims description 9
- 230000007246 mechanism Effects 0.000 claims description 8
- 239000003507 refrigerant Substances 0.000 claims description 4
- 239000003638 chemical reducing agent Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract 1
- 108010053481 Antifreeze Proteins Proteins 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 1
- 230000002265 prevention 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/10—Control of fluid heaters characterised by the purpose of the control
- F24H15/136—Defrosting or de-icing; Preventing freezing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/20—Control of fluid heaters characterised by control inputs
- F24H15/212—Temperature of the water
- F24H15/219—Temperature of the water after heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/20—Control of fluid heaters characterised by control inputs
- F24H15/212—Temperature of the water
- F24H15/223—Temperature of the water in the water storage tank
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
- F24H15/335—Control of pumps, e.g. on-off control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
- F24H15/375—Control of heat pumps
- F24H15/38—Control of compressors of heat pumps
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
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】
（イ）産業上の利用分野
本発明はと一トポンプサイクルの凝縮器と貯湯タンクと
を水配管を介して分離してなる給湯機に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a water heater in which a single pump cycle condenser and a hot water storage tank are separated via water piping.
仲）従来技術
一般にヒートポンプサイクルを利用した給湯機は、その
効率上から比較的に温暖な地方で用いられていた。その
ため此種の給湯機を寒冷地で使用した場合には、夜およ
び朝の外気温度低下時に水配管内が凍結し、この水配管
が破裂したり、最悪の時には水熱交換器や貯湯タンクが
破損する場合があった。従って水配管、内の水温もしく
は外気温度を温度センサで検知し、この温度が所定値以
下・となった時、には貯湯タンク内の水温に拘わらず加
熱運転による凍結防止を行なっていた。このため温水を
長期間使用しな（、・場合でも常に運転操作スイッチを
運転状態とする必要があり極めて不経済なものとなり、
また運転操作スイッチを停止状態として長期間６使用し
ない場合には貯湯タンク、水配管、水熱交換器内の水を
全て抜かなければならないものであった。(Naka) Prior Art Water heaters that utilize a heat pump cycle are generally used in relatively warm regions due to their efficiency. Therefore, if this type of water heater is used in a cold region, the inside of the water pipes may freeze when the outside temperature drops at night or in the morning, causing the water pipes to burst, or in the worst case scenario, the water heat exchanger or hot water storage tank to be damaged. It could get damaged. Therefore, the water temperature inside the water pipe or the outside air temperature is detected by a temperature sensor, and when this temperature falls below a predetermined value, freezing prevention is performed by heating operation regardless of the water temperature in the hot water storage tank. For this reason, even if hot water is not used for a long period of time, it is necessary to keep the operation switch in the operating state, which is extremely uneconomical.
Furthermore, if the operation switch is turned off and the machine is not used for a long period of time, all the water in the hot water storage tank, water piping, and water heat exchanger must be drained.
（ハ） 目的
本発明は給湯機を長期間利用しない場合でも経済的な運
転が行なえ、かつ水抜等を必要としな〜・給湯機を提供
することである。(c) Objective The present invention provides a water heater that can be operated economically even when the water heater is not used for a long period of time, and does not require draining water.
に）構成
本発明は圧縮機、凝縮器、減圧装置、蒸発器を冷媒配管
で環状に接続したヒートポンプサイクルを設け、この凝
縮器と熱交換を行なう水熱交換器と貯湯タンクとを分離
し、これら水熱交換器と貯湯タンクとを水配管及び循環
ポンプを介して接続した構成とすると共に、通常運転、
凍結防止運転及び運転停止のモードを備える運転機構を
組４合わせ凍結防止運転のみを行なえるようにしたもの
である。B) Structure The present invention provides a heat pump cycle in which a compressor, a condenser, a pressure reducing device, and an evaporator are connected in a ring through refrigerant piping, and a water heat exchanger and a hot water storage tank that exchange heat with the condenser are separated, These water heat exchangers and hot water storage tanks are connected via water piping and circulation pumps, and during normal operation,
This system combines four operating mechanisms with modes for anti-freeze operation and operation stop to perform only anti-freeze operation.
（ホ）実施例
以下、本発明の実施例を第１図、第２図に基づいて説明
すると、先づ第１図の給湯機の概略図で、（１）は圧縮
機（２）、凝縮器（３）、減圧装置（４）、蒸発器（５
）を冷媒配管で環状に接続したヒートポンプサイクルか
らなる呈外ユニット、（６）は凝縮器（３）から熱交換
を行なう水熱交換器であり、水配管（７）、（カ及び循
環ポンプ（８）を介して貯湯タンク（９）へ接続されて
いる。従ってとの貯湯タンク（９）と室内ユニット（１
）とは利用者が自由に分離して設置することができる。(E) Example Hereinafter, an example of the present invention will be explained based on FIGS. 1 and 2. First, FIG. 1 is a schematic diagram of a water heater. vessel (3), pressure reducing device (4), evaporator (5)
) is an external unit consisting of a heat pump cycle connected in a ring with refrigerant piping, (6) is a water heat exchanger that exchanges heat from the condenser (3), and water piping (7), (motor and circulation pump ( 8) to the hot water storage tank (9).Therefore, the hot water storage tank (9) and the indoor unit (1
) can be freely separated and installed by the user.
尚、（ＩｌＪｌは利用者用の温水蛇口である。In addition, (IlJl is a hot water faucet for users.
またＵυは給湯機の運転操作機構であり、貯湯タンク（
９）に設けられた負特性を有する温度サーモミノと、水
配管（力に設けられた負特性を有する配管サーモ（１四
とからの検知温度で循環ポンプ（８）及び圧縮機（２）
の運転を制御するものである。尚、この運転操作機構←
υは第２図に示すように構成されている。In addition, Uυ is the operation mechanism of the water heater, and the hot water storage tank (
The temperature thermometer (14) with negative characteristics installed in the water pipe (9) and the temperature thermometer (14) with negative characteristics installed in the water pipe (power) circulate the pump (8) and the compressor (2).
It controls the operation of the Furthermore, this driving operation mechanism←
υ is constructed as shown in FIG.
すなわち、０４）は高温運転０、低温運転（ト）、凍結
防止運転（Ｔ′）、運転停止（ＯＦＦ）（以下、単にモ
ード■、（Ｌ）、（Ｔ）、（ＯＦＦ）とする）の各モー
ドを有する切換えスイッチ、（１５）は温度サーモミノ
と抵抗（Ｌｅ。In other words, 04) is for high temperature operation 0, low temperature operation (G), antifreeze operation (T'), and operation stop (OFF) (hereinafter simply referred to as modes ■, (L), (T), and (OFF)). The selector switch (15) has a temperature thermomino and a resistor (Le).
αη、ａ印、凹からなる貯湯タンク（９）内の温度を検
知する温度ブリッジ回路、（２０１は配管サーモ０階と
抵抗（２］）、（２２１，ｃ！３１からなる配管（力内
の温度を検知する凍結防止ブリッジ回路、Ｃ２４）は反
転入力端子を温度サーモ０りと抵抗■との間に接続し、
非反転入力端子を抵抗αｅと抵抗（１７）との間に接続
した高温運転０用の比較器、（２唱マ反転入力端を温度
サーモ（１２１と抵抗（１８１との間に接続し、非反転
入力端子を抵抗（Ｉηと抵抗（１→との間に接続した低
温運転（ト）用の比較器、（ハ）は反転入力端子を配管
サーモａ４と抵抗（２３との間に接続し、非反転入力端
子を抵抗（２］）と抵抗（ハ）との間に接続した比較器
、尚、上記比較器し載（ハ）、翰は雑音に対して有効な
絶縁型を用いている。従ってオープコレクタ型となり夫
々の出力端子はダイオード（５）、（２８）、Ｃ９）と
抵抗側、（３１）、Ｃ３りとを介して切換スイッチα４
）のモードσ」、（Ｌ＞、（′ｒ）端子に接続されてお
り、切換スイッチ０４）の接続されたモードに対応する
比較器のみに＋１２ ［Ｖ〕 の電圧が印加されて比
較器の出力を選択して取り出せるものである。Temperature bridge circuit that detects the temperature in the hot water storage tank (9) consisting of αη, a mark, concave, (201 is the piping thermometer 0 floor and resistance (2]), (221, c!31) The antifreeze bridge circuit that detects temperature, C24) connects the inverting input terminal between the temperature thermometer and the resistor.
A comparator for high temperature operation 0 whose non-inverting input terminal is connected between the resistor αe and the resistor (17), and a comparator for high-temperature operation (0) whose inverting input terminal is connected between the temperature thermometer (121 and the resistor (181), A comparator for low temperature operation (G) with the inverting input terminal connected between the resistor (Iη and the resistor (1→), (C) the inverting input terminal connected between the piping thermometer a4 and the resistor (23), A comparator whose non-inverting input terminal is connected between a resistor (2) and a resistor (C), and the comparator mounting (C) and wire are of an insulating type that is effective against noise. Therefore, it is an open collector type, and each output terminal is connected to the changeover switch α4 via the diodes (5), (28), C9) and the resistor side, (31), C3.
), and a voltage of +12 [V] is applied only to the comparator corresponding to the mode connected to the selector switch 04). The output can be selected and retrieved.
但し、モード０、（Ｌ）はダイオード（至）、（ロ）を
介してモード■へ接続さ、れている。さらに圧縮機（２
）及び循環ポンプ（８）の駆動回路（３艶がダイオード
（３６）、（３７）、時を介してダイオード（２７）と
抵抗■、ダイオード□□□と抵抗Ｃ３１）、ダイオード
（２）と抵抗Ｃりとの接続点に接続されている。また以
上の様に構成し高価なアナログスイッチ等を用いず安価
なものとなっている。However, mode 0 (L) is connected to mode (2) via diodes (to) and (b). Furthermore, the compressor (2
) and the drive circuit of the circulation pump (8) (three layers are diode (36), (37), diode (27) and resistor ■, diode □□□ and resistor C31), diode (2) and resistor It is connected to the connection point with C. In addition, the structure as described above does not use expensive analog switches and is inexpensive.
次にこの給湯機の動作は先づ切換スイッチα４）がモー
ド０の場合には＋１２ （Ｖ） の電源電圧が抵抗（
７）、ダイオード＋２７１を介して比較器（２４）へ供
給されると共に、ダイオード關、抵抗（３つ、ダイオー
ド（２）を介して比較器（ハ）へ供給されている。すな
わち比較器（２）、（ハ）からのみ出力を取り出すこと
ができるものである。従って、貯湯タンク（９）内の温
度が抵抗（１６）、（１７）、ａ騰で定まる高温設定値
以下となると、比較器（財）の出力が高電位となり＋１
２ （Ｖ） の電源電圧がモードＩ端子、抵抗（至）
、ダイオード（至）を介して駆動回路Ｃ３５）へ供給さ
れて圧縮機（２）及び循環ポンプ（８）が駆動し貯湯タ
ンク（９）内の温水をさらに加熱する。然る後、との貯
湯タンク（９）内の温度が所定値以上となると比較器（
財）の出力が低電位となり＋１２ 〔Ｖ） の電源電
圧がそ−ド０端子抵抗（至）、ダイオードＣηを介して
比較器（２４）へ流入し駆動回路０埼へは此が駆動する
に至る電源電圧が供給されず圧縮機（２）、循環ポンプ
（８）の駆動が停止するものである。Next, the operation of this water heater is as follows: First, when the selector switch α4) is in mode 0, the power supply voltage of +12 (V) is applied to the resistance (
7), is supplied to the comparator (24) via the diode +271, and is also supplied to the comparator (c) via the diode (3) and the resistor (2). That is, the comparator (2) ), (c). Therefore, when the temperature inside the hot water storage tank (9) falls below the high temperature set value determined by the resistances (16), (17), and a rise, the comparator The output of the (goods) becomes high potential and +1
2 (V) power supply voltage is mode I terminal, resistance (to)
, is supplied to the drive circuit C35) via the diode (to), which drives the compressor (2) and circulation pump (8) to further heat the hot water in the hot water storage tank (9). After that, when the temperature in the hot water storage tank (9) exceeds a predetermined value, the comparator (
The output of the power supply) becomes a low potential, and a power supply voltage of +12 [V] flows into the comparator (24) via the 0 terminal resistance (towards) and the diode Cη, and is sent to the drive circuit 0, which is driven. The compressor (2) and circulation pump (8) stop driving because the power supply voltage is not supplied.
さらに冬期など外気温が低下した場合には、水配管（力
中に設けられた配管サーモＵ（支）により比較器（ハ）
の出力が高電位となって上記同様に駆動回路（ハ）が動
作して圧縮機（２）及び循環ポンプ（８）が駆動し凍結
防止運転を行なう。この後、配管（力内の温度が所定値
以上となると駆動回路の９が不動作となり圧縮機（２）
及び循環ポンプ（８）の駆動が停止するものである。Furthermore, when the outside temperature drops such as in winter, the comparator (c) is
The output becomes a high potential, and the drive circuit (c) operates in the same manner as described above, driving the compressor (2) and circulation pump (8) to perform antifreeze operation. After this, when the temperature inside the pipe (power) exceeds a predetermined value, the drive circuit 9 becomes inoperable and the compressor (2)
And the driving of the circulation pump (8) is stopped.
切換スイッチＱ４）がモード（ト）の場合には＋１２［
Ｖ）の電源電圧が抵抗Ｃ１１）、ダイオード（ハ）を介
して比較器（ハ）へ供給さ″れると共に、ダイオード（
財）、抵抗６３゜ダイオード（ハ）を介して比較器（イ
）へ供給されている。When the selector switch Q4) is in mode (G), +12[
The power supply voltage of V) is supplied to the comparator (C) via the resistor C11) and the diode (C).
It is supplied to the comparator (A) via a resistor and a 63° diode (C).
すなわち比較器（２ω、（イ）からのみ出力を取り出す
ことができるものである。以下、比較器（ハ）が出力を
高電位とする時の貯湯タンク（９）内の温度がモード０
０時と比べて低いだけであり他の動作はモード００時と
同じため省略する。In other words, the output can be taken only from the comparator (2ω, (A)). Below, when the comparator (C) outputs a high potential, the temperature inside the hot water tank (9) is mode 0.
It is only lower than mode 0, and the other operations are the same as mode 00, so they will be omitted.
切換スイッチＩがモード（Ｔ）の場合には＋１２（Ｖ）
の電源電圧が抵抗ｒ３７Ｊ、ダイオード翰を介して比較
器（ハ）へ供給され、比較器（４）からのみ出力を取り
出すことができる。従って、貯湯タンク（９）内の温度
に拘らず水配管（力内の温度が所定値以下となった時の
み上記と同じ凍結防止運転を行なうものである。+12 (V) when selector switch I is in mode (T)
The power supply voltage is supplied to the comparator (c) via the resistor r37J and the diode wire, and the output can be taken out only from the comparator (4). Therefore, regardless of the temperature inside the hot water storage tank (9), the same anti-freezing operation as described above is performed only when the temperature inside the water pipe (inside the water pipe) falls below a predetermined value.
切換スイーｌチＩがモード（ＯＦＦ）の場合には＋１２
［Ｖ） の電源電圧がいずれの比較器へも供給されな
いため圧縮機（２）、循環ポンプ（８）は停止状態を保
つものである。+12 when switch I is in mode (OFF)
Since the power supply voltage of [V] is not supplied to any of the comparators, the compressor (2) and circulation pump (8) remain in a stopped state.
（へ）効果
以上の如く本発明の給湯機は圧縮機、凝縮器、減圧装置
、蒸発器を冷媒配管で環状に接続したビー１ポンプサイ
クルを設け、この凝縮器と熱交換を行なう水熱交換器と
貯湯タンクとを分離し、これら水熱交換器と貯湯タンク
とを水配管及び循環ポンプを介して接続した構成とする
と共に、通常運転、凍結防止運転、及び運転停止のモー
ドを備える運転操作機構を組み合わせたので、特に長期
間、給湯機を使用しない場合に運転操作機構のモードを
凍結防止運転モードとすると、貯湯タンク内の温度は設
定温度には維持されないが凍結防止運転のみが維持され
る。(f) Effects As described above, the water heater of the present invention is equipped with a B1 pump cycle in which a compressor, a condenser, a pressure reducing device, and an evaporator are connected in a ring with refrigerant piping, and a water heat exchanger that performs heat exchange with the condenser. The water heat exchanger and the hot water storage tank are separated, and the water heat exchanger and the hot water storage tank are connected via water piping and a circulation pump, and the operation includes normal operation, antifreeze operation, and operation stop mode. Since the mechanisms are combined, if the operating mechanism is set to anti-freeze operation mode, especially when the water heater is not used for a long period of time, the temperature inside the hot water storage tank will not be maintained at the set temperature, but only the anti-freeze operation will be maintained. Ru.
すなわち、貯湯タンク内の利用しない温水を加熱するこ
とがなく最低限の維持費で長期間給湯機の凍結を防止す
ることができるなど従来にない効果を奏でるものである
。In other words, it is possible to prevent the water heater from freezing for a long period of time with minimal maintenance costs without heating the unused hot water in the hot water storage tank, which brings about unprecedented effects.
第１図は本発明の実施例を示す配管回路図、第２図は運
転操作機構の電気回路図である。
（８）・・・循環ポンプ、 （９）・・・貯湯タンク、
。・・・運転操作機構。FIG. 1 is a piping circuit diagram showing an embodiment of the present invention, and FIG. 2 is an electric circuit diagram of the operation mechanism. (8)...Circulation pump, (9)...Hot water storage tank,
. ...Driving operation mechanism.
Claims (1)
管で環状に接続したヒートポンプサイクルを設け、この
凝縮器と熱交換を行なう水熱交換器と貯湯タンクとを分
離し、これら水熱交換器と貯湯タンクとを水配管及び循
環ポンプを介して接続した構成とすると共に、通常運転
、凍結防止運転、及び運転停止のモードを備える運転操
作機構を組み合わせたことを特徴とする給湯機。(1) A heat pump cycle is installed in which a compressor, a condenser, a pressure reducer, and an evaporator are connected in a ring through refrigerant piping, and a water heat exchanger and a hot water storage tank that exchange heat with the condenser are separated. A water heater characterized by having a configuration in which an exchanger and a hot water storage tank are connected via water piping and a circulation pump, and in combination with an operation mechanism having modes of normal operation, antifreeze operation, and operation stop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57207365A JPS5997448A (en) | 1982-11-25 | 1982-11-25 | Hot water feeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57207365A JPS5997448A (en) | 1982-11-25 | 1982-11-25 | Hot water feeder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5997448A true JPS5997448A (en) | 1984-06-05 |
Family
ID=16538521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57207365A Pending JPS5997448A (en) | 1982-11-25 | 1982-11-25 | Hot water feeder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5997448A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020035799A (en) * | 2002-04-13 | 2002-05-15 | 이상화 | Heating Device Of Domestic Water By Using Radiator Of Electric Home Appliances |
| JP2003056907A (en) * | 2001-08-20 | 2003-02-26 | Denso Corp | Heat pump water heater |
| WO2003042606A1 (en) * | 2001-11-13 | 2003-05-22 | Daikin Industries, Ltd. | Heat pump type hot water supply device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5912249A (en) * | 1982-07-14 | 1984-01-21 | Hitachi Ltd | Operation controlling method of heat-pump heat- accumulating type hot water supply device |
-
1982
- 1982-11-25 JP JP57207365A patent/JPS5997448A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5912249A (en) * | 1982-07-14 | 1984-01-21 | Hitachi Ltd | Operation controlling method of heat-pump heat- accumulating type hot water supply device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003056907A (en) * | 2001-08-20 | 2003-02-26 | Denso Corp | Heat pump water heater |
| WO2003042606A1 (en) * | 2001-11-13 | 2003-05-22 | Daikin Industries, Ltd. | Heat pump type hot water supply device |
| US7228695B2 (en) | 2001-11-13 | 2007-06-12 | Daikin Industries, Ltd. | Heat pump type hot water supply device |
| KR20020035799A (en) * | 2002-04-13 | 2002-05-15 | 이상화 | Heating Device Of Domestic Water By Using Radiator Of Electric Home Appliances |
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