JP2009250465A - Heat pump-type water heater - Google Patents

Heat pump-type water heater Download PDF

Info

Publication number
JP2009250465A
JP2009250465A JP2008095667A JP2008095667A JP2009250465A JP 2009250465 A JP2009250465 A JP 2009250465A JP 2008095667 A JP2008095667 A JP 2008095667A JP 2008095667 A JP2008095667 A JP 2008095667A JP 2009250465 A JP2009250465 A JP 2009250465A
Authority
JP
Japan
Prior art keywords
hot water
temperature
boiling
water storage
storage tank
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.)
Granted
Application number
JP2008095667A
Other languages
Japanese (ja)
Other versions
JP5032380B2 (en
Inventor
Shigeki Murayama
成樹 村山
Hiroshi Kikuchi
洋 菊池
Makoto Honma
誠 本間
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Corona Corp
Original Assignee
Corona Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Corona Corp filed Critical Corona Corp
Priority to JP2008095667A priority Critical patent/JP5032380B2/en
Publication of JP2009250465A publication Critical patent/JP2009250465A/en
Application granted granted Critical
Publication of JP5032380B2 publication Critical patent/JP5032380B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat pump type water heater which is changed to a boiling-up temperature not needing reheating before heat quantity stored in a hot water storage tank reaches a reheating temperature in a daytime zone. <P>SOLUTION: This heat pump-type water heater includes the hot water storage tank 2 for storing hot water/water, a circulation circuit 4 having a circulation pump 7 for circulatably connecting a lower portion and an upper portion of the hot water storage tank 2, and circulating the hot water/water, a heat pump type heating means disposed on the way of the circulation circuit 4 and circulating and heating the hot water/water in the hot water storage tank 2, and a boiling-up control portion 26 performing the boiling-up control to boil up the hot water/water in the hot water storage tank 2 to the boiling-up target temperature by a heat pump-type heating means 3. As the boiling-up control portion 26 changes the boiling-up temperature when the temperature reaches a predetermined specific value close to a reheating starting condition of the daytime zone, in the daytime zone, economic performance is improved as a wasteful operation is not performed, running costs are reduced, and the water heater is used at ease. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

この発明は、貯湯タンク内の湯水をヒートポンプユニットで目標温度に沸き上げる沸き上げ制御を行うヒートポンプ式給湯機に関するものである。   The present invention relates to a heat pump water heater that performs boiling control for boiling hot water in a hot water storage tank to a target temperature with a heat pump unit.

従来この種のヒートポンプ式給湯機においては、電力料金の安価な深夜時間帯に、貯湯タンク内の湯水をヒートポンプユニットで沸き上げ目標温度に沸き上げる沸き上げ制御を行って、昼間時間帯に給湯等で使用する湯を貯湯タンクに貯えており、前記沸き上げ制御では、昼間時間帯に貯湯タンク内の湯が不足して沸き増し運転を行った場合、貯湯熱量が足らなかったと判断して、次回の深夜時間帯の沸き上げ運転時の沸き上げ温度を上昇させるものであった。（例えば、特許文献１参照。）
特許第３７６０８０８号公報 Conventionally, in this type of heat pump water heater, hot water in the hot water storage tank is heated to the target temperature by the heat pump unit during the midnight hours when the electricity rate is low, and hot water is supplied during the daytime. The hot water used in is stored in a hot water storage tank, and in the above-mentioned boiling control, if the hot water in the hot water storage tank runs short during the daytime, it is determined that the amount of stored hot water was not sufficient. The boiling temperature at the time of boiling operation at midnight was increased. (For example, refer to Patent Document 1.)
Japanese Patent No. 3760808

ところでこの従来のものでは、深夜時間帯時の沸き上げ温度の変更は、必ず昼間時間帯の沸き増し運転の有無が条件となっているので、どうしても電気料金の高い昼間時間帯での運転が入ることとなり、電気代の高騰につながりヒートポンプ式給湯機の経済性に相反するものであった。   By the way, with this conventional one, the change in the boiling temperature during the midnight hours is always subject to the presence or absence of extra heating during the daytime hours, so it must be operated during the daytime hours when electricity charges are high. This led to a rise in electricity bills and conflicted with the economics of heat pump water heaters.

この発明はこの課題に着目し上記課題を解決するために、請求項１では、特にその構成を、湯水を貯湯する貯湯タンクと、前記貯湯タンクの下部と上部とを循環可能に接続し湯水を循環させる循環ポンプを有した循環回路と、前記循環回路途中に設けられ前記貯湯タンク内の湯水を循環加熱するヒートポンプ式加熱手段と、前記貯湯タンク内の湯水を前記ヒートポンプ式加熱手段で沸き上げ目標温度に沸き上げる沸き上げ制御を行う沸き上げ制御部とを備えたものに於いて、前記沸き上げ制御部は、昼間時間帯に該昼間時間帯の沸き増し開始条件に接近した予め定められた所定値に達したことを条件として、沸き上げ温度を変更するようにしたものである。   In order to solve the above-mentioned problem by focusing attention on this problem, the present invention provides a hot water storage tank that stores hot water and a lower part and an upper part of the hot water tank that can circulate. A circulation circuit having a circulation pump for circulation, a heat pump heating means provided in the circulation circuit for circulatingly heating hot water in the hot water storage tank, and a target for boiling the hot water in the hot water storage tank by the heat pump heating means A heating control unit that performs boiling control for heating to a temperature, wherein the heating control unit is a predetermined predetermined value that is close to a heating start condition in the daytime time zone during the daytime time zone. The boiling temperature is changed on condition that the value is reached.

又請求項２では、前記沸き増し開始条件が、貯湯タンク内下部の貯湯温度の場合には、貯湯温度センサが沸き増し開始条件の所定温度より数度高い所定値以下を検知することで、沸き上げ制御部による沸き上げ温度を数度上昇させるようにしたものである。   Further, in the second aspect, when the boiling start condition is the hot water storage temperature in the lower part of the hot water storage tank, the hot water storage temperature sensor detects a value not more than a predetermined value several degrees higher than the predetermined temperature of the boiling start condition. The boiling temperature by the raising control unit is increased several degrees.

又請求項３では、前記沸き増し開始条件が、貯湯タンク内の残湯熱量の場合には、残湯熱量が沸き増し開始条件の所定残湯量より所定量多い所定値以下を検知することで、沸き上げ制御部による沸き上げ温度を数度上昇させるようにしたものである。   Further, in claim 3, when the boiling start condition is the amount of remaining hot water in the hot water storage tank, the remaining hot water heat is detected by detecting a predetermined value that is a predetermined amount greater than the predetermined remaining hot water amount in the boiling start condition, The boiling temperature by the boiling controller is increased several degrees.

又請求項４では、前記沸き増し開始条件が、貯湯タンク内下部の貯湯温度の場合には、貯湯温度センサが沸き増し開始条件の所定温度より所定値以上高いことが数日間連続して検知することで、沸き上げ制御部による沸き上げ温度を数度降下させるようにしたものである。   According to a fourth aspect of the present invention, when the boiling start condition is the hot water storage temperature in the lower part of the hot water tank, the hot water temperature sensor continuously detects for several days that the hot water temperature sensor is higher than the predetermined temperature by the boiling start condition. Thus, the boiling temperature by the boiling control unit is lowered several degrees.

又請求項５では、前記沸き増し開始条件が、貯湯タンク内下部の貯湯温度の場合には、前記貯湯タンク内下部より一段上の貯湯温度センサが、沸き増し開始条件の所定温度より所定値以上高いことが数日間連続して検知することで、沸き上げ制御部による沸き上げ温度を数度降下させるようにしたものである。   According to a fifth aspect of the present invention, in the case where the boiling start condition is the hot water storage temperature in the lower part of the hot water storage tank, the hot water storage temperature sensor one level higher than the lower part in the hot water storage tank has a predetermined value higher than the predetermined temperature of the hot water start condition. By detecting that the temperature is high continuously for several days, the boiling temperature by the boiling controller is lowered several degrees.

この発明の請求項１によれば、昼間時間帯中に沸き増し開始条件に近い所定値を検知することにより、深夜時間帯の沸き上げ制御部による沸き上げ温度を変更するので、実際に沸き増し運転をすることなく、その手前の所定値で近い将来の沸き増し運転を判断するので、無駄な運転がなく極めて経済的でランニングコストの低減が図られると共に、安心して使用出来るものである。   According to the first aspect of the present invention, since the boiling temperature by the boiling control unit in the midnight time zone is changed by detecting a predetermined value close to the boiling start condition during the daytime period, the boiling temperature is actually increased. Without driving, a near future boiling operation is determined based on a predetermined value before the operation, so that there is no wasteful operation and the running cost can be reduced, and it can be used with peace of mind.

更に請求項２によれば、貯湯タンク内下部の残湯温度によって深夜時間帯の沸き上げ制御部による沸き上げ温度を上昇させるので、実使用に極めて近い所の温度で判断され、無駄のない変更で効率の良い運転が行われるものである。   Further, according to claim 2, since the boiling temperature by the boiling control unit in the midnight time zone is raised by the remaining hot water temperature in the lower part of the hot water storage tank, it is judged at a temperature extremely close to actual use, and there is no wasteful change. In this way, efficient operation is performed.

又請求項３によれば、貯湯タンク内に残っている熱量によって深夜時間帯の沸き上げ制御部による沸き上げ温度を上昇させるので、実際に不足している熱量として検知し判断され、的確な変更で効率の良い運転が行われるものである。   According to the third aspect of the present invention, since the heating temperature by the heating control unit in the midnight time zone is raised by the amount of heat remaining in the hot water storage tank, it is detected and judged as an actually insufficient amount of heat, and an appropriate change is made. In this way, efficient operation is performed.

更に請求項４によれば、貯湯タンク内下部の湯温が所定温度より所定値だけ高い状態が数日間連続することで、深夜時間帯の沸き上げ制御部による沸き上げ温度を数度降下させるので、無駄な沸き上げ運転による電力消費を抑えることが出来、更に経済的で効率の良い運転が行われるものである。   Further, according to the fourth aspect, the hot water temperature in the lower part of the hot water storage tank is higher than the predetermined temperature by a predetermined value for several days. Thus, power consumption due to useless boiling operation can be suppressed, and more economical and efficient operation is performed.

又請求項５によれば、貯湯タンク内下部より一段上の湯温が、所定温度より所定値以上高状態が数日間連続することで、深夜時間帯の沸き上げ制御部による沸き上げ温度を数度降下させるので、貯湯熱量に大きな余裕がある時には、確実に無駄な沸き上げ運転による電力消費を抑えることが出来、的確な変更で効率の良い運転が行われるものである。   Further, according to claim 5, the hot water temperature one level above the lower part of the hot water storage tank is continuously higher than a predetermined temperature by a predetermined value for several days, so that the boiling temperature by the boiling control unit in the midnight time zone is lowered several degrees. Therefore, when there is a large margin in the amount of stored hot water, it is possible to reliably suppress power consumption due to wasteful boiling operation, and an efficient operation can be performed with appropriate changes.

次にこの発明の一実施形態を図面に基づき説明する。
１は湯水を貯湯する貯湯タンク２を備えた貯湯タンクユニット、３は貯湯タンク２内の湯水を加熱するヒートポンプ式加熱手段としてのヒートポンプユニット、４は貯湯タンク２とヒートポンプユニット３とを湯水が循環可能に接続する循環回路で、この循環回路４は貯湯タンク２の下部とヒートポンプユニット３とを結び貯湯タンク２内の湯水をヒートポンプユニット３に供給する往き管５と、ヒートポンプユニット３と貯湯タンク２の上部とを結びヒートポンプユニット３で沸き上げられた湯を貯湯タンク２の上部に戻す戻り管６とから構成され、また、７は往き管５に設けられ貯湯タンク２の湯水をヒートポンプユニット３に循環させる循環ポンプである。 Next, an embodiment of the present invention will be described with reference to the drawings.
1 is a hot water storage tank unit having a hot water storage tank 2 for storing hot water, 3 is a heat pump unit as a heat pump heating means for heating the hot water in the hot water storage tank 2, and 4 is hot water circulating through the hot water storage tank 2 and the heat pump unit 3. The circulation circuit 4 is connected to the heat pump unit 3 by connecting the lower part of the hot water tank 2 and the heat pump unit 3 to the heat pump unit 3, and the heat pump unit 3 and the hot water tank 2. And a return pipe 6 that returns the hot water boiled by the heat pump unit 3 to the upper part of the hot water storage tank 2, and 7 is provided in the forward pipe 5 to supply hot water from the hot water storage tank 2 to the heat pump unit 3. It is a circulation pump that circulates.

８は貯湯タンク２の下端に接続され貯湯タンク２に水を給水する給水管、９は貯湯タンク２の上端に接続され貯湯タンク２に貯湯されている高温の湯を出湯する出湯管、１０は給水管８から分岐された給水分岐管、１１は出湯管９からの湯と給水分岐管１０からの水とを混合して給湯設定温度の湯に混合する給湯混合弁、１２は給湯混合弁１１で混合された湯を台所や洗面所等に設けられた給湯栓１３に給湯する給湯管、１４は給湯混合弁１１の直後の給湯管１２に設けられ給湯混合弁１１で混合された湯の温度を検出する給湯温度センサで、給湯混合弁１１は給湯温度センサ１４で検出する温度がリモコン（図示せず）で設定された給湯設定温度になるように弁体を移動させるモータが駆動されてその混合比率が制御されるものである。   8 is a water supply pipe connected to the lower end of the hot water storage tank 2 to supply water to the hot water storage tank 2, 9 is a hot water outlet pipe connected to the upper end of the hot water storage tank 2 to discharge hot water stored in the hot water storage tank 2, 10 A water supply branch pipe branched from the water supply pipe 8, 11 is a hot water supply mixing valve that mixes hot water from the hot water discharge pipe 9 and water from the water supply branch pipe 10 and mixes it with hot water at a hot water supply set temperature, and 12 is a hot water supply mixing valve 11. A hot water pipe for supplying hot water mixed in a hot water tap 13 provided in a kitchen or a washroom, etc., 14 is a temperature of the hot water provided in the hot water supply pipe 12 immediately after the hot water mixing valve 11 and mixed in the hot water mixing valve 11 The hot water mixing valve 11 is driven by a motor that moves the valve body so that the temperature detected by the hot water temperature sensor 14 becomes the set hot water temperature set by a remote controller (not shown). The mixing ratio is controlled.

１５は貯湯タンク２内の湯水が一次側に循環され二次側である浴槽（図示せず）内の循環水を加熱する風呂熱交換器、１６は前記風呂熱交換器１５に貯湯タンク２内の湯水を循環させる一次側循環ポンプ、１７は貯湯タンク２と風呂熱交換器１５を循環可能に接続する一次側循環回路、１８は風呂熱交換器１５と浴槽とを循環水が循環可能に接続する二次側循環回路である。   15 is a bath heat exchanger in which hot water in the hot water storage tank 2 is circulated to the primary side and heats the circulating water in a bathtub (not shown) on the secondary side, and 16 is connected to the bath heat exchanger 15 in the hot water storage tank 2. The primary side circulation pump for circulating the hot water of water, 17 is a primary side circulation circuit for connecting the hot water storage tank 2 and the bath heat exchanger 15 so as to be able to circulate, and 18 is connected so that the circulating water can circulate between the bath heat exchanger 15 and the bathtub. The secondary side circulation circuit.

１９は給水管８途中に設けられ給水の温度を検出する給水温度センサ、２０は給水圧を減圧する減圧弁、２１は加熱されることによる過圧を逃す圧力逃し弁、２２は往き管５に設けられ貯湯タンク２からヒートポンプユニット３に供給される湯水の入水温度を検出する入水温度検出手段としての入水温度センサ、２３はヒートポンプユニット３にて加熱された加熱後の湯の温度を検出する沸き上げ温度検出手段としての沸き上げ温度センサ、２４は貯湯タンク２の側面の上下方向に複数個設けられた貯湯温度センサで、この貯湯温度センサ２４が検出する温度情報によって、貯湯タンク２内にどれだけの熱量が残っているか検知し、そして貯湯タンク２内の上下方向の温度分布を検知するものである。また、２５はヒートポンプユニット３の駆動開始・停止制御や給湯温度センサ１４等の各種センサの入力を受けて各アクチュエータの駆動を制御するマイクロコンピュータを備えた給湯制御器であり、この給湯制御器２５は深夜時間帯（２３：００〜翌日７：００）や深夜時間帯以外の昼間時間帯（７：０１〜２２：５９）に貯湯タンク２内の湯水をヒートポンプユニット３により沸き上げ目標温度に沸き上げる沸き上げ制御を行う沸き上げ制御部２６を有しているものである。   19 is a water supply temperature sensor that is provided in the middle of the water supply pipe 8 to detect the temperature of the water supply, 20 is a pressure reducing valve that reduces the pressure of the water supply, 21 is a pressure relief valve that releases overpressure caused by heating, and 22 is a discharge pipe 5. An incoming water temperature sensor 23 serving as an incoming water temperature detecting means for detecting the incoming water temperature of hot water supplied from the hot water storage tank 2 to the heat pump unit 3 is a boiling point for detecting the temperature of hot water heated by the heat pump unit 3. A boiling temperature sensor 24 as a raised temperature detection means is a hot water storage temperature sensor 24 provided in the vertical direction of the side surface of the hot water storage tank 2, which is stored in the hot water storage tank 2 according to the temperature information detected by the hot water storage temperature sensor 24. Only the amount of heat remaining is detected, and the temperature distribution in the vertical direction in the hot water storage tank 2 is detected. Reference numeral 25 denotes a hot water supply controller provided with a microcomputer for controlling the start and stop of the heat pump unit 3 and various sensors such as the hot water temperature sensor 14 to control the drive of each actuator. The hot water in the hot water storage tank 2 is boiled up to the target temperature by the heat pump unit 3 at midnight hours (23: 00 to 7:00 on the next day) and daytime hours (7:00 to 22:59) other than midnight hours. It has the boiling control part 26 which performs the boiling control to raise.

前記ヒートポンプユニット３は、冷媒を圧縮する回転数可変の圧縮機２７と、凝縮器としての水冷媒熱交換器２８と、減圧手段としての電子膨張弁２９と、強制空冷式の蒸発器としての空気熱交換器３０とで構成されたヒートポンプ回路３１と、空気熱交換器３０に送風する室外ファン３２と、空気熱交換器３０の風上側に設けられ外気温度を検出する外気温度検出手段としての外気温度センサ３３と、ヒートポンプユニット３を制御するヒーポン制御器３４を備えており、ヒートポンプ回路３１内には冷媒として二酸化炭素が用いられて超臨界ヒートポンプサイクルを構成しているものであり、ヒーポン制御器３４は前記給湯制御器２５と有線にて通信可能に接続されているものである。   The heat pump unit 3 includes a compressor 27 having a variable rotation speed for compressing a refrigerant, a water refrigerant heat exchanger 28 as a condenser, an electronic expansion valve 29 as a decompression means, and air as a forced air-cooled evaporator. A heat pump circuit 31 composed of the heat exchanger 30, an outdoor fan 32 that blows air to the air heat exchanger 30, and outside air as an outside air temperature detecting means that is provided on the windward side of the air heat exchanger 30 and detects the outside air temperature A temperature sensor 33 and a heat pump controller 34 for controlling the heat pump unit 3 are provided, and carbon dioxide is used as a refrigerant in the heat pump circuit 31 to constitute a supercritical heat pump cycle. Reference numeral 34 is connected to the hot water supply controller 25 so as to be communicable by wire.

前記沸き上げ制御部２６は、昼間時間帯に該昼間時間帯の沸き増し開始条件を貯湯温度の場合は、下から２番目の貯湯温度センサ２４ｂ＜５０℃とし、又残湯熱量の場合は、残湯熱量＜１０００Kcalとし、この条件の時には、昼間時間帯でもヒートポンプユニット３を駆動させて貯湯タンク２内に高温水を追加する沸き増し運転を行わせるものである。   The boiling control unit 26 sets the second hot water storage temperature sensor 24b <50 ° C. from the bottom when the heating start condition for the daytime time zone is the hot water storage temperature during the daytime time zone. The amount of heat of the remaining hot water is set to <1000 Kcal. Under this condition, the heat pump unit 3 is driven even during the daytime period to perform a reheating operation in which high-temperature water is added to the hot water storage tank 2.

更に前記沸き上げ制御部２６は、前記昼間時間帯の沸き増し開始条件では、どうしても１回は沸き増しを行ってしまい経済的でないと言うことで、沸き増し開始条件に近い予め設定された所定値に達したことを条件として、沸き上げ温度を変更するものであり、この所定値は貯湯温度の場合は、下から２番目の貯湯温度センサ２４ｂ＜５５℃とし、又残湯熱量の場合は、残湯熱量＜１５００Kcalとし、この時には沸き上げ温度を５℃上昇させるものである。   Further, the boiling control unit 26 says that the heating start condition in the daytime period is inevitably increased once and is not economical, so that a predetermined value close to the heating start condition is set in advance. The boiling temperature is changed on the condition that the water temperature reaches the predetermined temperature. When the hot water storage temperature is reached, the predetermined value is the second hot water storage temperature sensor 24b <55 ° C. The amount of heat of the remaining hot water is <1500 Kcal, and the boiling temperature is increased by 5 ° C. at this time.

又下から２番目の貯湯温度センサ２４ｂ＜６０℃に未到達が７日連続した場合や、下から３番目の貯湯温度センサ２４ｃ＜６０℃に未到達が７日連続した場合には、沸き上げ温度を５℃降下させて、無駄な熱量を保持したり、過剰な沸き上げを防止して経済性を追求出来るものである。   When the second hot water storage temperature sensor 24b <60 ° C. has not reached the second hot water temperature sensor 24b <60 ° C. for 7 consecutive days, or when the third hot water storage temperature sensor 24c <60 ° C. from the bottom has not reached 60 ° C. for 7 consecutive days, By reducing the temperature by 5 ° C., it is possible to maintain a useless amount of heat or to prevent excessive boiling and to pursue economic efficiency.

次にこの一実施形態の作動について、電力安価な深夜時間帯の沸き上げ制御の沸き上げ温度決定を示した図２、３のフローチャートを用いて説明する。
時間帯別契約電力の電力単価が安価な深夜時間帯（２３：００）に達すると、沸き上げ制御部２６は沸き上げ制御を開始するものであるが、この時の沸き上げ温度は昼間時間帯での貯湯温度によって決定されるもので、すなわち、ステップ３５で先ず蓄熱量過不足判定時間か要するに昼間時間帯かを判断し、ＹＥＳではステップ３６に進み降下判定条件を満たしているかで、下から２番目の貯湯温度センサ２４ｂ＜６０℃かを判断し、ＹＥＳではステップ３７に進んで降下判定に達したことを沸き上げ制御部２６自身で記憶する。 Next, the operation of this embodiment will be described with reference to the flowcharts of FIGS. 2 and 3 showing the boiling temperature determination of the boiling control in the midnight time zone where the power is low.
When the electric power unit price of the contract power by time zone reaches an inexpensive midnight time zone (23:00), the boiling control unit 26 starts the boiling control, and the boiling temperature at this time is the daytime time zone. That is, it is determined by the hot water storage temperature at step 35. That is, first, at step 35, it is determined whether the heat storage amount excess / deficiency determination time is required, that is, the daytime time zone. It is determined whether the second hot water storage temperature sensor 24b <60 ° C., and if YES, the routine proceeds to step 37, and the boiling control unit 26 itself stores the fact that the lowering determination is reached.

又ステップ３６でＮＯではステップ３８に進み上昇判定条件を満たしているかで、下から２番目の貯湯温度センサ２４ｂ＜５５℃かを判断し、ＹＥＳではステップ３９に進み上昇判定に到達したことを記憶した後、ステップ３５に戻るものであり、ステップ３８でＮＯの場合もステップ３５に戻るものであり、昼間時間帯中はこのステップを順次継続しているものである。   If NO in step 36, the process proceeds to step 38 to determine whether the rise determination condition is satisfied, and whether the second hot water storage temperature sensor 24b <55 ° C. is determined. If YES, the process proceeds to step 39 and the rise determination is reached. After that, the process returns to step 35. If NO in step 38, the process returns to step 35, and this step is continued in the daytime period.

次に図３に示す昼間時間帯終了直前の処理について説明すれば、先ずステップ４０で上昇判定に到達したか、上昇判定の記憶があるかを判断し、ＹＥＳではステップ４１に進んで沸き上げ温度を５℃上昇させるものであり、ＮＯではステップ４２に進み下降判定に到達したか、下降判定の記憶があるかを判断し、ＮＯではステップ４３に進んで下降カウンタをクリアし、ＹＥＳではステップ４４に進んで下降カウンタをカウントアップさせた後、ステップ４５に進み下降カウンタが継続して７日カウントしたかを判断し、ＹＥＳでステップ４６に進んで沸き上げ温度を５℃下降させるものであり、ＮＯではステップ４７に進んで終了するものである。   Next, the processing immediately before the end of the daytime period shown in FIG. 3 will be described. First, in step 40, it is determined whether the rising determination is reached or whether there is a memory of the rising determination, and in YES, the process proceeds to step 41 and the boiling temperature is reached. If NO, the process proceeds to step 42 to determine whether the lowering determination is reached or whether the lowering determination is stored. If NO, the process proceeds to step 43 to clear the lowering counter. If YES, step 44 is performed. The process proceeds to step 45 to count up the lowering counter, and then proceeds to step 45 to determine whether the lowering counter has continued to count for seven days. If YES, the process proceeds to step 46 to lower the boiling temperature by 5 ° C. If NO, the process proceeds to step 47 and ends.

そして深夜時間帯（２３：００）の到来で沸き上げ制御部２６による沸き上げ運転に入るのであるが、上記のように昼間時間帯時に貯湯タンク２内の熱量が沸き増し運転をするまでもないが、それに近い熱量となった時に、沸き上げ温度を８０℃から８５℃に変更して次の日に熱量が不足することを防止するものであり、又逆に十分な熱量の貯留を連続７日間検知することで、沸き上げ温度を８０℃から７５℃に下降修正して、無駄なエネルギーを使用しないようにしているものである。   Then, when the midnight time zone (23:00) arrives, the heating control unit 26 starts the heating operation. However, as described above, the amount of heat in the hot water storage tank 2 is increased and the operation is not started. However, when the amount of heat becomes close to that, the boiling temperature is changed from 80 ° C. to 85 ° C. to prevent the heat amount from being insufficient on the next day, and conversely, a sufficient amount of heat is continuously stored. By detecting the day, the boiling temperature is corrected to decrease from 80 ° C. to 75 ° C., so that useless energy is not used.

尚、この一実施形態では、貯湯タンク２内の湯温によって沸き上げ温度を変更したが、これに限定されることなく、例えば貯湯温度センサ２４間の貯湯温度と貯湯量の積から残湯量を演算し、残湯熱量＜１５００Kcalにより沸き上げ温度を変更するようにしても良いものである。   In this embodiment, the boiling temperature is changed depending on the hot water temperature in the hot water storage tank 2, but the present invention is not limited to this. For example, the remaining hot water amount is calculated from the product of the hot water temperature and the hot water amount between the hot water temperature sensors 24. It is also possible to calculate and change the boiling temperature according to the amount of remaining hot water <1500 Kcal.

この発明の一実施形態の概略構成図。The schematic block diagram of one Embodiment of this invention. 同一実施形態の昼間時間帯での貯湯熱量過不足検知制御を示すフローチャート。The flowchart which shows the hot water storage heat amount excess and deficiency detection control in the daytime time slot | zone of the same embodiment. 同一実施形態の沸き上げ温度変更制御を示すフローチャート。The flowchart which shows the boiling temperature change control of the same embodiment.

符号の説明Explanation of symbols

２ 貯湯タンク
３ ヒートポンプ式加熱手段（ヒートポンプユニット）
４ 循環回路
７ 循環ポンプ
２６ 沸き上げ制御部 2 Hot water storage tank 3 Heat pump heating means (heat pump unit)
4 Circulating circuit 7 Circulating pump 26 Boiling control unit

Claims (5)

湯水を貯湯する貯湯タンクと、前記貯湯タンクの下部と上部とを循環可能に接続し湯水を循環させる循環ポンプを有した循環回路と、前記循環回路途中に設けられ前記貯湯タンク内の湯水を循環加熱するヒートポンプ式加熱手段と、前記貯湯タンク内の湯水を前記ヒートポンプ式加熱手段で沸き上げ目標温度に沸き上げる沸き上げ制御を行う沸き上げ制御部とを備えたものに於いて、前記沸き上げ制御部は、昼間時間帯に該昼間時間帯の沸き増し開始条件に接近した予め定められた所定値に達したことを条件として、沸き上げ温度を変更することを特徴とするヒートポンプ式給湯機。   A hot water storage tank for storing hot water, a circulation circuit having a circulation pump that circulates the lower and upper portions of the hot water storage tank to circulate hot water, and circulating hot water in the hot water storage tank provided in the circulation circuit Heating-type heating means for heating, and a heating control unit for performing heating-up control for heating up hot water in the hot water storage tank to a boiling target temperature by the heat pump-type heating means, the heating control The heat pump water heater is characterized in that the heating temperature is changed on the condition that a predetermined value close to a start condition for increasing heating in the daytime period is reached in the daytime period. 前記沸き増し開始条件が、貯湯タンク内下部の貯湯温度の場合には、貯湯温度センサが沸き増し開始条件の所定温度より数度高い所定値以下を検知することで、沸き上げ制御部による沸き上げ温度を数度上昇させることを特徴とする請求項１記載のヒートポンプ式給湯機。   When the heating start condition is the hot water storage temperature in the lower part of the hot water storage tank, the hot water temperature sensor detects a value not more than a predetermined value that is several degrees higher than the predetermined temperature of the boiling start condition, so that the boiling control unit The heat pump type hot water heater according to claim 1, wherein the temperature is raised several degrees. 前記沸き増し開始条件が、貯湯タンク内の残湯熱量の場合には、残湯熱量が沸き増し開始条件の所定残湯量より所定量多い所定値以下を検知することで、沸き上げ制御部による沸き上げ温度を数度上昇させることを特徴とする請求項１記載のヒートポンプ式給湯機。   If the boiling increase start condition is the amount of remaining hot water in the hot water storage tank, the amount of remaining hot water detected is less than a predetermined value that is a predetermined amount greater than the predetermined remaining hot water amount in the boiling start condition. 2. The heat pump type hot water heater according to claim 1, wherein the raised temperature is raised several degrees. 前記沸き増し開始条件が、貯湯タンク内下部の貯湯温度の場合には、貯湯温度センサが沸き増し開始条件の所定温度より所定値以上高いことが数日間連続して検知することで、沸き上げ制御部による沸き上げ温度を数度降下させることを特徴とする請求項１記載のヒートポンプ式給湯機。   When the boiling start condition is the hot water storage temperature in the lower part of the hot water storage tank, the hot water temperature sensor continuously detects for several days that the hot water temperature sensor is higher than the predetermined temperature of the boiling start condition by boiling control. The heat pump type hot water heater according to claim 1, wherein the boiling temperature by the section is lowered by several degrees. 前記沸き増し開始条件が、貯湯タンク内下部の貯湯温度の場合には、前記貯湯タンク内下部より一段上の貯湯温度センサが、沸き増し開始条件の所定温度より所定値以上高いことが数日間連続して検知することで、沸き上げ制御部による沸き上げ温度を数度降下させることを特徴とする請求項１記載のヒートポンプ式給湯機。   When the boiling start condition is the hot water storage temperature in the lower part of the hot water tank, the hot water temperature sensor that is one step higher than the lower part of the hot water tank is continuously higher than the predetermined temperature of the hot water start condition for several days continuously. The heat pump type hot water heater according to claim 1, wherein the boiling temperature by the boiling control unit is lowered by several degrees by detecting the temperature.
JP2008095667A 2008-04-02 2008-04-02 Heat pump water heater Expired - Fee Related JP5032380B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008095667A JP5032380B2 (en) 2008-04-02 2008-04-02 Heat pump water heater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008095667A JP5032380B2 (en) 2008-04-02 2008-04-02 Heat pump water heater

Publications (2)

Publication Number Publication Date
JP2009250465A true JP2009250465A (en) 2009-10-29
JP5032380B2 JP5032380B2 (en) 2012-09-26

Family

ID=41311365

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2008095667A Expired - Fee Related JP5032380B2 (en) 2008-04-02 2008-04-02 Heat pump water heater

Country Status (1)

Country Link
JP (1) JP5032380B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015055389A (en) * 2013-09-11 2015-03-23 三菱重工業株式会社 Hot water system and control method thereof
JP2015169384A (en) * 2014-03-07 2015-09-28 株式会社コロナ Heat pump storage water heater

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09264604A (en) * 1996-03-29 1997-10-07 Kyushu Henatsuki Kk Controller for hot-water storage type electric water heater
JP2003194405A (en) * 2001-12-26 2003-07-09 Daikin Ind Ltd Hot water system
JP2004233002A (en) * 2003-01-31 2004-08-19 Denso Corp Reservoir-type hot water supply unit
JP2006071140A (en) * 2004-08-31 2006-03-16 Matsushita Electric Ind Co Ltd Storage type water heater
JP3760808B2 (en) * 2001-06-29 2006-03-29 松下電器産業株式会社 Hot water storage water heater
JP2007085651A (en) * 2005-09-22 2007-04-05 Matsushita Electric Ind Co Ltd Hot water storage type water heater
JP2007183057A (en) * 2006-01-10 2007-07-19 Matsushita Electric Ind Co Ltd Storage type hot water supplier

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09264604A (en) * 1996-03-29 1997-10-07 Kyushu Henatsuki Kk Controller for hot-water storage type electric water heater
JP3760808B2 (en) * 2001-06-29 2006-03-29 松下電器産業株式会社 Hot water storage water heater
JP2003194405A (en) * 2001-12-26 2003-07-09 Daikin Ind Ltd Hot water system
JP2004233002A (en) * 2003-01-31 2004-08-19 Denso Corp Reservoir-type hot water supply unit
JP2006071140A (en) * 2004-08-31 2006-03-16 Matsushita Electric Ind Co Ltd Storage type water heater
JP2007085651A (en) * 2005-09-22 2007-04-05 Matsushita Electric Ind Co Ltd Hot water storage type water heater
JP2007183057A (en) * 2006-01-10 2007-07-19 Matsushita Electric Ind Co Ltd Storage type hot water supplier

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015055389A (en) * 2013-09-11 2015-03-23 三菱重工業株式会社 Hot water system and control method thereof
JP2015169384A (en) * 2014-03-07 2015-09-28 株式会社コロナ Heat pump storage water heater

Also Published As

Publication number Publication date
JP5032380B2 (en) 2012-09-26

Similar Documents

Publication Publication Date Title
JP4453662B2 (en) Heat pump type water heater
JP6109119B2 (en) Heat pump hot water supply system
JP5343398B2 (en) Water heater
JP2010091181A (en) Storage water heater and heat pump water heater
JP5050763B2 (en) Water heater
JP2008039340A (en) Hot water supply device
JP2009264617A (en) Heat pump water heater
JP5032380B2 (en) Heat pump water heater
JP2009281628A (en) Heat pump water heater
JP2009138980A (en) Heat pump type water heater
JP2007093113A (en) Heat pump type water heater
JP5097054B2 (en) Heat pump water heater
JP4134969B2 (en) Hot water storage type heat pump water heater
JP2015190683A (en) Heat pump type water heater
JP2008008507A (en) Hot water storage type water supply system
JP3966224B2 (en) Heat pump water heater
JP2006226593A (en) Water heater
JP2006308261A (en) Heat pump type hot water supplier
JP7011540B2 (en) Hot water storage type hot water supply device
JP5706301B2 (en) Heat pump water heater
JP2008039339A (en) Hot water supply device
CN103244985A (en) Heat pump hydronic heater
JP2014040943A (en) Hot water storage type water heater
JP5982238B2 (en) Hot water storage water heater
JP5168344B2 (en) Heat pump water heater

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20100830

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20120518

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20120529

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20120531

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20120626

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20120628

R150 Certificate of patent or registration of utility model

Ref document number: 5032380

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20150706

Year of fee payment: 3

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees