JP2001201177A - Heat pump hot water supplier - Google Patents
Heat pump hot water supplierInfo
- Publication number
- JP2001201177A JP2001201177A JP2000009878A JP2000009878A JP2001201177A JP 2001201177 A JP2001201177 A JP 2001201177A JP 2000009878 A JP2000009878 A JP 2000009878A JP 2000009878 A JP2000009878 A JP 2000009878A JP 2001201177 A JP2001201177 A JP 2001201177A
- Authority
- JP
- Japan
- Prior art keywords
- hot water
- heat pump
- compressor
- outside air
- air temperature
- 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
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本願発明は、水の加熱手段と
してヒートポンプ加熱手段を用いたヒートポンプ給湯装
置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat pump water heater using a heat pump heating means as a means for heating water.
【０００２】[0002]
【従来の技術】従来より、冷媒循環式のヒートポンプを
加熱源として用いたヒートポンプ給湯装置としては、種
々構造のものが提案されている（例えば、特開昭６０−
２２１６６１号公報（第１公知例）、特開昭６１−１５
３４２９号公報（第２公知例）、特開平９−６８３６９
号公報（第３公知例）参照）。2. Description of the Related Art Various types of heat pump water heaters using a refrigerant circulation type heat pump as a heating source have been proposed (for example, Japanese Patent Application Laid-Open No. Sho 60-1985).
No. 221661 (first known example), JP-A-61-15
No. 3429 (second known example), Japanese Patent Application Laid-Open No. 9-68369.
(See the third known example).
【０００３】ヒートポンプ給湯装置においては、貯湯タ
ンクとして、湯又は湯と水とが常時満タン状態に維持さ
れる常時満タン式のタンクが採用されるのが通例であ
る。また、給水に対する加熱方式としては、給水を直接
ヒートポンプの熱交換器に導入し、ここでの熱交換によ
り得られた湯を貯湯タンクに貯湯し必要に応じて出湯す
る方式とか、貯湯タンク内に給水するとともに該貯湯タ
ンクとヒートポンプの熱交換器との間で水を循環させて
湯を得る方式とか、ヒートポンプ側の熱交換器との間で
冷媒循環系を構成する加熱用熱交換器を貯湯タンク内に
配置し該加熱用熱交換器によって貯湯タンクに給水され
た水を間接的に加熱する方式等、種々の方式が提案され
ている。[0003] In a heat pump hot water supply apparatus, as a hot water storage tank, it is customary to employ an always-full tank in which hot water or hot water and water are always kept in a full state. In addition, as a heating method for the water supply, the water supply is introduced directly into the heat exchanger of the heat pump, and the hot water obtained by the heat exchange is stored in a hot water storage tank and discharged as needed. A method of supplying hot water and circulating water between the hot water storage tank and the heat exchanger of the heat pump to obtain hot water, or storing a heating heat exchanger that forms a refrigerant circulation system between the heat pump and the heat exchanger. Various methods have been proposed, such as a method in which water supplied to a hot water storage tank is disposed in a tank and the water supplied to the hot water storage tank is indirectly heated by the heating heat exchanger.
【０００４】[0004]
【発明が解決しようとする課題】ヒートポンプ給湯装置
においては、貯湯タンクの残湯量が所定以下に低下した
とき（即ち、貯湯タンク内における湯の比率が所定以下
に低下したとき）には、湯切れ（即ち、湯の比率が零近
くとなり貯湯タンク内を低温の水がほとんど占める状
態）を防止すべく、「追炊き」を行うことが必要であ
る。尚、ここでいう「追炊き」には、上記各加熱方式に
対応して、新たに得た湯を貯湯タンクに追加的に導入し
て貯湯量を回復させる（即ち、貯湯タンク内における湯
の比率を高める）形態と、貯湯タンク内にある湯又は水
を追加的に加熱して湯温を高めることで貯湯量を回復さ
せる形態の両者を含む概念である。In the heat pump hot water supply apparatus, when the remaining hot water amount in the hot water storage tank falls below a predetermined level (ie, when the ratio of hot water in the hot water storage tank drops below a predetermined level), the hot water runs out. It is necessary to carry out “additional cooking” in order to prevent (ie, a state in which the ratio of hot water is close to zero and low-temperature water almost occupies the hot water storage tank). In addition, in the “additional cooking” here, newly obtained hot water is additionally introduced into the hot water storage tank to recover the hot water storage amount corresponding to each of the above heating methods (that is, the hot water in the hot water storage tank is recovered). The concept includes both a mode of increasing the ratio and a mode of restoring the hot water storage amount by additionally heating hot water or water in the hot water storage tank to increase the hot water temperature.
【０００５】ところで、給水の加熱源として用いられる
ヒートポンプには、その能力が外気温に左右されるとい
う特性があり、且つこの特性は給湯負荷（即ち、使用湯
量）に対応しないものである。即ち、図５には、ヒート
ポンプの圧縮機を一定回転で１時間連続運転した場合に
おける「炊上能力」の外気温に対する変化状態と、給湯
負荷の外気温に対する変化状態とを示している。ここ
で、ヒートポンプの「炊上能力」は外気温が低いほど低
下する傾向となるのに対して、給湯負荷は外気温が低い
ほど増加する傾向となる。従って、外気温の低い冬季に
おいては給湯負荷が大きいにも拘わらずヒートポンプの
「炊上能力」が低く、このため「追炊き」による湯量回
復が間に合わず、湯切れが生じる事が懸念されるもので
ある。これに対して、外気温の高い夏季においては給湯
負荷が小さいにも拘わらずヒートポンプの「炊上能力」
が高く、このため「追炊き」に対して十分な余裕をもつ
ことになる。尚、図６には、ヒートポンプによる「炊上
湯量」の外気温に対する変化状態を示したもので、図５
の「炊上能力」に対応した特性となる。[0005] A heat pump used as a heat source for supplying water has a characteristic that its performance is affected by the outside air temperature, and this characteristic does not correspond to the hot water supply load (that is, the amount of hot water used). That is, FIG. 5 shows a change state of the “cooking capacity” with respect to the outside air temperature and a change state of the hot water supply load with respect to the outside air temperature when the compressor of the heat pump is continuously operated at a constant rotation for one hour. Here, the “cooking capacity” of the heat pump tends to decrease as the outside air temperature is low, whereas the hot water supply load tends to increase as the outside air temperature is low. Therefore, in winter when the outside air temperature is low, the heat pump's "cooking capacity" is low despite the large hot water supply load, and the recovery of hot water by "additional cooking" is not enough, and there is a concern that the hot water may run out. It is. On the other hand, in summer when the outside air temperature is high, the heat pump's "
Therefore, there is a sufficient margin for "additional cooking". FIG. 6 shows a change state of the “cooking hot water amount” with respect to the outside air temperature by the heat pump.
The characteristics correspond to the “cooking capacity” of
【０００６】一方、給湯負荷は、一日の中でもその時間
帯によって大きく変化するものである。即ち、図７には
冬季の如き外気温の低い状態における給湯負荷の時間帯
による変化状態を、また図１０には夏季の如き外気温の
高い状態における給湯負荷の時間帯による変化状態を、
それぞれ示している。図７及び図１０からは、１日の時
間帯における給湯負荷の変化状態は外気温の高低にはほ
とんど左右されず冬季でも夏季でも略同様であること、
及び、１日の中では、朝食時間帯である６時〜８時の時
間帯と、昼食時間帯である１０時〜１３時の時間帯と、
夕食及び入浴時間帯である１８時〜２４時の時間帯に給
湯負荷が集中し、特に１９時〜２０時の入浴時間帯にお
いて給湯負荷がピークに達すること、が判る。[0006] On the other hand, the hot water supply load varies greatly depending on the time of the day. That is, FIG. 7 shows a change state of the hot water supply load in a time period when the outside air temperature is low such as winter, and FIG. 10 shows a change state of the hot water supply load in a time period when the outside air temperature is high such as summer,
Each is shown. From FIGS. 7 and 10, the change state of the hot water supply load in the time period of the day is hardly influenced by the level of the outside air temperature and is substantially the same in winter and summer.
And, in one day, a time zone of 6:00 to 8:00 which is a breakfast time zone, a time zone of 10:00 to 13:00 which is a lunch time zone,
It can be seen that the hot water supply load concentrates during the dinner and bathing hours from 18:00 to 24:00, and the hot water supply load particularly reaches a peak during the bathing hours from 19:00 to 20:00.
【０００７】ここで、上述のようにヒートポンプの「炊
上能力」は、外気温に左右され、外気温が低いほど低下
することから、外気温の低い冬季においては、図８に示
すように、給湯負荷がピークに達する近傍の１８時〜２
１時の時間帯にヒートポンプを最大加熱量で３時間運転
しても、図９に示すように貯湯タンクの残湯量は湯切れ
を起こさない程度の少量のまま推移しほとんど増加しな
い状態となる。また、２３時〜３時の間にヒートポンプ
を最大加熱量で運転しておくと、朝食時間帯及び昼食時
間帯における使用湯量の増加にも拘わらず、残湯量は満
タンに近い量のまま推移することになる。[0007] As described above, the "cooking capacity" of the heat pump depends on the outside air temperature and decreases as the outside air temperature is low. Therefore, in winter when the outside air temperature is low, as shown in FIG. 18:00 to 2 near the peak of hot water supply load
Even if the heat pump is operated at the maximum heating amount for 3 hours at 1:00, the remaining amount of hot water in the hot water storage tank remains small and does not run out as shown in FIG. Also, if the heat pump is operated at the maximum heating amount between 23:00 and 3:00, the remaining hot water volume will remain almost full, despite the increase in the amount of hot water used during the breakfast and lunch hours. become.
【０００８】これに対して、外気温の高い夏季において
は、図１１に示すように、給湯負荷がピークに達する近
傍の１８時〜２１時の時間帯にヒートポンプを最大加熱
量で１時間しか運転しなくても、図１２に示すように貯
湯タンクの残湯量は湯切れを起こさない程度の少量のま
ま推移し、また、２３時〜２４時の間にヒートポンプを
最大加熱量で運転しておくと、朝食時間帯及び昼食時間
帯における使用湯量の増加にも拘わらず、残湯量は満タ
ンに近い量のまま推移することになる。On the other hand, in summer when the outside air temperature is high, as shown in FIG. 11, the heat pump is operated for only one hour at the maximum heating amount during the period from 18:00 to 21:00 near the peak of the hot water supply load. Even if it does not, as shown in FIG. 12, the remaining hot water amount in the hot water storage tank remains small enough not to run out of hot water, and if the heat pump is operated at the maximum heating amount between 23:00 and 24:00, Despite the increase in the amount of hot water used during the breakfast and lunch hours, the remaining hot water volume will remain close to full.
【０００９】以上のことから、ヒートポンプ給湯装置の
運転制御に際しては、外気温とともに一日の時間帯をも
考慮することが必要であると言える。From the above, it can be said that in controlling the operation of the heat pump hot water supply apparatus, it is necessary to consider not only the outside air temperature but also the time zone of the day.
【００１０】さらに、ヒートポンプ給湯装置の運転制御
に際しては、ヒートポンプの運転効率を考慮することも
必要である。即ち、ヒートポンプには、図４に示すよう
に、圧縮機の運転周波数に対応して運転効率が変化する
ことが知られている。そして、運転効率は特定の運転周
波数「ａ」においてピーク値を示し、該運転周波数
「ａ」から外れるに従って運転効率が低下するものであ
る。その一方、ヒートポンプの能力（炊上能力）は、圧
縮機の運転周波数が高くなるほど、その力率の上昇に伴
って増大する傾向にあることが知られている。Further, in controlling the operation of the heat pump water heater, it is necessary to consider the operation efficiency of the heat pump. That is, it is known that the operation efficiency of the heat pump changes according to the operation frequency of the compressor as shown in FIG. The operating efficiency shows a peak value at a specific operating frequency “a”, and the operating efficiency decreases as the operating frequency deviates from the operating frequency “a”. On the other hand, it is known that the heat pump capacity (cooking capacity) tends to increase with an increase in the power factor as the operating frequency of the compressor increases.
【００１１】従って、ヒートポンプ給湯装置を湯切れを
生じさせることなく、且つ、より高効率で運転して省エ
ネ性を達成するためには、圧縮機の運転周波数の変更に
よる能力調整を、炊上能力に影響を与える外気温と１日
の時間帯の双方を考慮して行うことが必要であるといえ
る。[0011] Therefore, in order to operate the heat pump hot water supply apparatus without running out of hot water and at a higher efficiency to achieve energy saving, it is necessary to adjust the capacity by changing the operating frequency of the compressor. It is necessary to take into account both the outside air temperature and the time zone of the day which affect the time.
【００１２】しかるに、上掲各公知例のヒートポンプ給
湯装置においては、共に、圧縮機の能力を可変とするも
のの、その能力変更を外気温のみに基づいて行うもの
（第１公知例）、貯湯タンク内の湯温に基づいて行うも
の（第２公知例）、貯湯タンク内の湯温と１日の時間帯
の双方に基づいて行うもの（第３公知例）、であって、
外気温と１日の時間帯の双方に基づいて行うものではな
く、従って、これら何れにおいても、湯切れの防止と省
エネ性の両立という点において不満の残るものであっ
た。In each of the above-described heat pump hot water supply apparatuses, the capacity of the compressor is variable, but the capacity is changed only based on the outside air temperature (first known example). (Second known example) that is performed based on both the hot water temperature in the hot water storage tank and the time zone of the day (third known example)
It is not performed based on both the outside air temperature and the time period of the day. Therefore, in any of these cases, it has been unsatisfactory in terms of preventing running out of hot water and saving energy.
【００１３】そこで本願発明は、湯切れ防止と省エネ性
の両立をより確実ならしめたヒートポンプ給湯装置を提
供することを目的としてなされたものである。SUMMARY OF THE INVENTION The present invention has been made to provide a heat pump hot water supply apparatus that more reliably prevents running out of hot water and saves energy.
【００１４】[0014]
【課題を解決するための手段】本願発明ではかかる課題
を解決するための具体的手段として次のような構成を採
用している。Means for Solving the Problems In the present invention, the following configuration is adopted as specific means for solving such problems.
【００１５】本願の第１の発明では、運転周波数に基づ
いて能力可変とされた圧縮機１１を備えたヒートポンプ
加熱手段１と貯湯タンク２１とを配管により接続して構
成されるヒートポンプ給湯装置において、外気温を検出
する外気温検出手段３と、時刻を検出する計時手段４
と、上記外気温検出手段３により検出された外気温と一
日の時間帯の双方に基づいて上記圧縮機１１の運転周波
数を変更する制御手段５とを備えたことを特徴としてい
る。In the first invention of the present application, in a heat pump hot water supply apparatus configured by connecting a heat pump heating means 1 having a compressor 11 whose capacity is variable based on an operation frequency and a hot water storage tank 21 by piping. Outside temperature detecting means 3 for detecting outside temperature, and time measuring means 4 for detecting time
And control means 5 for changing the operating frequency of the compressor 11 based on both the outside air temperature detected by the outside air temperature detection means 3 and the time period of the day.
【００１６】本願の第２の発明では、上記第１の発明に
かかるヒートポンプ給湯装置において、上記制御手段５
により、夜間時間帯においては上記圧縮機１１を高効率
が得られる第１の周波数で運転することを特徴としてい
る。According to a second aspect of the present invention, in the heat pump water heater according to the first aspect, the control means 5 is provided.
Thus, the compressor 11 is operated at the first frequency at which high efficiency is obtained in the night time zone.
【００１７】本願の第３の発明では、上記第１の発明に
かかるヒートポンプ給湯装置において、上記制御手段５
により、昼間時間帯においては上記圧縮機１１の運転周
波数を外気温に応じて変更設定することを特徴としてい
る。According to a third aspect of the present invention, in the heat pump water heater according to the first aspect, the control means 5 is provided.
Thus, in the daytime, the operating frequency of the compressor 11 is changed and set according to the outside air temperature.
【００１８】本願の第４の発明では、上記第３の発明に
かかるヒートポンプ給湯装置において、上記圧縮機１１
を、外気温が高いときには高効率が得られる第１の周波
数で、外気温が低いときには該第１の周波数よりも高周
波数側の第２の周波数で運転することを特徴としてい
る。According to a fourth aspect of the present invention, in the heat pump hot water supply apparatus according to the third aspect, the compressor 11
Is operated at a first frequency at which high efficiency is obtained when the outside air temperature is high, and at a second frequency higher than the first frequency when the outside air temperature is low.
【００１９】本願の第５の発明では、上記第１の発明に
かかるヒートポンプ給湯装置において、上記ヒートポン
プ加熱手段１を循環する冷媒をＣＯ2冷媒としたことを
特徴としている。A fifth invention of the present application is the heat pump water heater according to the first invention, wherein the refrigerant circulating in the heat pump heating means 1 is a CO 2 refrigerant.
【００２０】本願の第６の発明では、上記第１の発明に
かかるヒートポンプ給湯装置において、上記圧縮機１１
をスイング式圧縮機としたことを特徴としている。According to a sixth aspect of the present invention, in the heat pump water heater according to the first aspect, the compressor 11
Is a swing type compressor.
【００２１】[0021]
【発明の効果】本願発明ではかかる構成とすることによ
り次のような効果が得られる。According to the present invention, the following effects can be obtained by adopting such a configuration.
【００２２】 本願の第１の発明にかかるヒートポン
プ給湯装置によれば、運転周波数に基づいて能力可変と
された圧縮機１１を備えたヒートポンプ加熱手段１と貯
湯タンク２１とを配管により接続して構成されるヒート
ポンプ給湯装置において、外気温を検出する外気温検出
手段３と、時刻を検出する計時手段４と、上記外気温検
出手段３により検出された外気温と一日の時間帯の双方
に基づいて上記圧縮機１１の運転周波数を変更する制御
手段５とを備えているので、上記ヒートポンプ加熱手段
１の炊上能力は外気温に大きく影響され、また給湯負荷
は１日の時間帯において変化するものであり、さらに上
記ヒートポンプ加熱手段１の運転効率は上記圧縮機の運
転周波数に応じて変化するものであることからして、上
記圧縮機１１の運転周波数を外気温と一日の時間帯の双
方に基づいて変更してその運転形態を高効率運転と高能
力運転との間で選択することで、給湯負荷と上記ヒート
ポンプ加熱手段１の炊上能力とのアンバランスが可及的
に解消され該アンバランスに起因する湯切れが確実に防
止されるとともに、上記ヒートポンプ加熱手段１が必要
以上の炊上能力で運転されることがなくその省エネ運転
が実現されることになる。According to the heat pump water heater according to the first invention of the present application, the heat pump heating means 1 having the compressor 11 whose capacity is variable based on the operating frequency and the hot water storage tank 21 are connected by piping. In the heat pump hot water supply device, the outside air temperature detecting means 3 for detecting the outside air temperature, the time measuring means 4 for detecting the time, and both the outside air temperature detected by the outside air temperature detecting means 3 and the time period of the day are used. And the control means 5 for changing the operating frequency of the compressor 11, the cooking capacity of the heat pump heating means 1 is greatly affected by the outside air temperature, and the hot water supply load changes in the time zone of one day. In addition, since the operating efficiency of the heat pump heating means 1 changes according to the operating frequency of the compressor, the operating frequency of the compressor 11 By changing the wave number based on both the outside air temperature and the time period of the day and selecting the operation mode between high efficiency operation and high capacity operation, the hot water supply load and the cooking capacity of the heat pump heating means 1 And the heat pump heating means 1 is not operated with an unnecessarily high cooking capacity, and the energy saving operation can be performed. Will be realized.
【００２３】 本願の第２の発明にかかるヒートポン
プ給湯装置によれば、上記第１の発明にかかるヒートポ
ンプ給湯装置において、夜間時間帯、即ち、一般的に、
給湯負荷が少なく且つ比較的長時間をかけて貯湯するこ
とができる時間帯では、上記圧縮機１１を高効率が得ら
れる第１の周波数で運転するようにしているので、上記
における省エネ運転の実現という効果がより一層促進
されるものである。According to the heat pump water heater according to the second invention of the present application, in the heat pump water heater according to the first invention, during the night time period, that is, generally,
In a time zone in which the hot water supply load is small and hot water can be stored over a relatively long time, the compressor 11 is operated at the first frequency at which high efficiency is obtained. This effect is further promoted.
【００２４】 本願の第３の発明にかかるヒートポン
プ給湯装置によれば、上記第１の発明にかかるヒートポ
ンプ給湯装置において、昼間時間帯、即ち、夜間時間帯
に比べて給湯負荷が大きく湯切れ防止という要求が大き
い時間帯では、上記圧縮機１１の運転周波数、即ち、上
記ヒートポンプ加熱手段１の「炊上能力」を、該「炊上
能力」に大きく影響する外気温に応じて変更設定するよ
うにしているので、上記における湯切れの防止という
効果がさらに確実ならしめられる。According to the heat pump water heater according to the third invention of the present application, in the heat pump water heater according to the first invention, the hot water supply load is large as compared with the daytime time zone, that is, at night time, and it is possible to prevent running out of hot water. In a time zone where the demand is large, the operating frequency of the compressor 11, that is, the "cooking capacity" of the heat pump heating means 1 is changed and set according to the outside air temperature which greatly affects the "cooking capacity". Therefore, the effect of preventing running out of hot water in the above can be further ensured.
【００２５】また、夜間時間帯で、昼間時間帯よりも安
い夜間電気料金で貯湯タンク２１を高温湯で満タンにす
る際には、夜間８時間で満タンにすれば良いので、上記
圧縮機１１を高効率が得られる第１の運転周波数で運転
することにより、省エネ運転が実現されるものである。When filling the hot water storage tank 21 with hot water at night time at a nighttime electricity rate lower than the daytime time, it is sufficient to fill the hot water storage tank 21 in eight hours at night. 11 is operated at the first operation frequency at which high efficiency is obtained, thereby realizing energy-saving operation.
【００２６】 本願の第４の発明にかかるヒートポン
プ給湯装置によれば、上記第３の発明にかかるヒートポ
ンプ給湯装置において、上記圧縮機１１を、外気温が高
いときには高効率が得られる第１の周波数で、外気温が
低いときには該第１の周波数よりも高周波数側の第２の
周波数で運転するようにしているので、外気温が高いと
き、即ち、上記ヒートポンプ加熱手段１の炊上能力その
ものが高いときには、上記圧縮機１１を第１の周波数で
高効率運転しても給湯能力には余裕があり湯切れが生じ
るおそれがなく、また外気温が低いとき、即ち、上記ヒ
ートポンプ加熱手段１の炊上能力そのものが低いときに
は上記圧縮機１１を第１の周波数よりも高周波数側の第
２の周波数で運転してその能力増大を図ることで湯切れ
の発生を確実に防止することができ、これらの相乗作用
として、上記における湯切れの防止という効果がより
一層確実ならしめられる。According to the heat pump water heater according to the fourth invention of the present application, in the heat pump water heater according to the third invention, the compressor 11 is provided with a first frequency at which high efficiency is obtained when the outside air temperature is high. Then, when the outside air temperature is low, the operation is performed at the second frequency higher than the first frequency. Therefore, when the outside air temperature is high, that is, the cooking capacity of the heat pump heating means 1 is reduced. When the temperature is high, even if the compressor 11 is operated at the first frequency with high efficiency, the hot water supply capacity has a margin and there is no danger of running out of hot water, and when the outside air temperature is low, that is, when the heat pump heating means 1 When the upper performance itself is low, the compressor 11 is operated at a second frequency higher than the first frequency to increase its performance, thereby reliably preventing the running out of hot water. As a synergistic effect of these, the effect of preventing running out of hot water as described above can be further assured.
【００２７】 本願の第５の発明にかかるヒートポン
プ給湯装置によれば、上記第１の発明にかかるヒートポ
ンプ給湯装置において、上記ヒートポンプ加熱手段１を
循環する冷媒をＣＯ2冷媒としているので、該ＣＯ2冷媒
は高圧冷媒であって凝縮温度が高いことから、より高温
の湯を取り出すことができ、高温給湯が容易に実現でき
るものである。According to the heat pump hot water supply apparatus according to a fifth aspect of the present invention, the heat pump water heater according to the first invention, since the refrigerant circulating through the heat pump heating means 1 is set to CO 2 refrigerant, the CO 2 Since the refrigerant is a high-pressure refrigerant and has a high condensation temperature, higher-temperature hot water can be taken out and high-temperature hot water supply can be easily realized.
【００２８】 本願の第６の発明にかかるヒートポン
プ給湯装置によれば、上記第１の発明にかかるヒートポ
ンプ給湯装置において、上記圧縮機１１をスイング式圧
縮機としているので、該スイング式圧縮機には、例えば
ローリングピストン式圧縮機のような潤滑性の点から高
速回転に限界があるとか、スクロール式圧縮機のような
漏れ損失が大きく低速回転に限界がある、等の問題がな
く、運転周波数の変更幅をより大きく取ることができ、
その結果として、ヒートポンプ加熱手段１の炊上能力の
より一層の増大によって、湯切れ防止効果がさらに促進
されることになる。According to the heat pump water heater according to the sixth aspect of the present invention, in the heat pump water heater according to the first aspect, the compressor 11 is a swing type compressor. For example, there is no problem in that there is a limit to high-speed rotation from the point of lubrication such as a rolling piston type compressor, or there is a limit to low-speed rotation with a large leakage loss as in a scroll type compressor. The change width can be made larger,
As a result, the effect of preventing running out of hot water is further promoted by further increasing the cooking capacity of the heat pump heating means 1.
【００２９】[0029]
【発明の実施の形態】以下、本願発明を好適な実施形態
に基づいて具体的に説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be specifically described based on preferred embodiments.
【００３０】図１には、本願発明の実施形態にかかるヒ
ートポンプ給湯装置Ｚのシステム図を示している。この
ヒートポンプ給湯装置Ｚは、次述するヒートポンプ加熱
手段１と貯湯・給湯手段２とで構成される。FIG. 1 shows a system diagram of a heat pump water heater Z according to an embodiment of the present invention. This heat pump hot water supply apparatus Z includes a heat pump heating means 1 and a hot water storage / hot water supply means 2 described below.
【００３１】上記ヒートポンプ加熱手段１は、圧縮式冷
凍回路で構成されるものであって、運転周波数の選択に
よってその能力を変更可能とされた電動式の圧縮機１１
と、凝縮器として機能し給水との間での熱交換によって
給水の加熱を行う水熱交換器１２と、例えば膨張弁で構
成される減圧手段１３と、蒸発器として機能する空気熱
交換器１４とを、冷媒配管３１によって順次環状に接続
して構成される。The heat pump heating means 1 is constituted by a compression type refrigeration circuit, and its capacity can be changed by selecting an operation frequency.
A water heat exchanger 12 which functions as a condenser and heats the feedwater by heat exchange with the feedwater; a pressure reducing means 13 constituted by, for example, an expansion valve; and an air heat exchanger 14 which functions as an evaporator. And are sequentially connected in a ring shape by a refrigerant pipe 31.
【００３２】尚、この実施形態においては、上記圧縮機
１１としてスイング式圧縮機を採用し、また冷媒として
ＣＯ2冷媒を採用している。In this embodiment, a swing type compressor is used as the compressor 11, and a CO 2 refrigerant is used as a refrigerant.
【００３３】上記貯湯・給湯手段２は、所定容量をもつ
貯湯タンク２１を備えるとともに、該貯湯タンク２１の
底面側には分岐配管３５を介して水用配管３４が接続さ
れている。この水用配管３４は、その一端が水道等の給
水源に、他端が上記水熱交換器１２に、それぞれ接続さ
れるとともに、上記分岐配管３５と上記水熱交換器１２
との中間位置には水ポンプ２２が備えられている。The hot water storage / hot water supply means 2 includes a hot water storage tank 21 having a predetermined capacity, and a water pipe 34 is connected to a bottom side of the hot water storage tank 21 via a branch pipe 35. One end of the water pipe 34 is connected to a water supply source such as tap water, and the other end is connected to the water heat exchanger 12. The branch pipe 35 and the water heat exchanger 12 are connected to each other.
A water pump 22 is provided at an intermediate position between the two.
【００３４】さらに、上記水熱交換器１２と上記貯湯タ
ンク２１の天面側との間は貯湯用の第１湯用配管３２に
よって、また該貯湯タンク２１の天面と給湯栓（図示省
略）との間は給湯用の第２湯用配管３３によって、それ
ぞれ接続されている。また、上記貯湯タンク２１の側壁
部の下部寄り位置には第１温度検出手段ＴＨ１が、上部
寄り位置には第２温度検出手段ＴＨ２が、それぞれ設け
られている。尚、この第１温度検出手段ＴＨ１は、所定
温度以上の高温湯が満タンに近い状態にあることを検知
するためのものであり、また第２温度検出手段ＴＨ２は
湯切れを生じない必要最少限の湯量の有無を検知するた
めのものであって、これら各温度検出手段ＴＨ１，ＴＨ
２の検出信号はそれぞれ運転制御要素として次述の制御
器５に入力される。Further, a first hot-water pipe 32 for storing hot water is provided between the water heat exchanger 12 and the top surface of the hot water storage tank 21, and a hot water tap (not shown) is provided between the top surface of the hot water storage tank 21 and the hot water storage tank. Are connected by a second hot water supply pipe 33. Further, a first temperature detecting means TH1 is provided at a position closer to the lower part of the side wall of the hot water storage tank 21, and a second temperature detecting means TH2 is provided at a position closer to the upper part. The first temperature detecting means TH1 is for detecting that high-temperature hot water having a temperature equal to or higher than a predetermined temperature is almost full, and the second temperature detecting means TH2 is a minimum necessary for preventing running out of hot water. For detecting the presence or absence of the minimum amount of hot water.
The two detection signals are input to the controller 5 described below as operation control elements.
【００３５】上記制御器５は、特許請求の範囲の「制御
手段」に該当し、ヒートポンプ給湯装置Ｚの運転制御を
行うものであって、該制御器５には上記各温度検出手段
ＴＨ１，ＴＨ２の検出信号の外に、外気温検出手段３に
より検知される外気温信号と計時手段４により検知され
る現在時刻とがそれぞれ入力され、これら各入力信号に
基づいて上記圧縮機１１に制御信号を出力しその運転周
波数を適宜変更設定するものである。The controller 5 corresponds to "control means" in the claims and controls the operation of the heat pump water heater Z. The controller 5 includes the temperature detecting means TH1 and TH2. In addition to the detection signal, the outside air temperature signal detected by the outside air temperature detecting means 3 and the current time detected by the time measuring means 4 are respectively input, and a control signal is sent to the compressor 11 based on these input signals. The operation frequency is output and the operation frequency is appropriately changed and set.
【００３６】以下、上記制御器５によるヒートポンプ給
湯装置Ｚの運転制御を図２に示すフローチャートに基づ
いて説明する。Hereinafter, the operation control of the heat pump water heater Z by the controller 5 will be described with reference to the flowchart shown in FIG.
【００３７】先ず、説明の都合上、図３に示すマップに
基づいて、上記制御器５による運転制御の基本思想を説
明する。この実施形態においては、先ず、ヒートポンプ
加熱手段１の炊上能力に及ぼす外気温の影響を考慮し
て、ヒートポンプ給湯装置Ｚの使用環境を、炊上能力が
低くなる冬季等の外気温の低い環境と、炊上能力が高く
なる夏季等の外気温の高い環境とに区分している。さら
に、ヒートポンプ給湯装置Ｚに対する給湯負荷が一日の
時間帯よって変化することを考慮して、一日２４時間を
給湯負荷の高い昼間時間帯（７時〜２３時）と給湯負荷
の低い夜間時間帯（２３時〜７時）とに区分している。First, for the sake of explanation, the basic concept of operation control by the controller 5 will be described based on the map shown in FIG. In this embodiment, first, in consideration of the influence of the outside air temperature on the cooking capacity of the heat pump heating means 1, the use environment of the heat pump hot water supply device Z is changed to an environment where the outside air temperature is low such as winter when the cooking capacity is low. And an environment where the outside air temperature is high such as in summer when the cooking capacity is high. Furthermore, considering that the hot water supply load to the heat pump hot water supply apparatus Z varies depending on the time of the day, 24 hours a day is used during the daytime hours when the hot water supply load is high (7:00 to 23:00) and during the night time when the hot water supply load is low It is divided into belts (23:00 to 7:00).
【００３８】そして、かかる区分によれば、（イー１）
外気温が低い時の昼間時間帯では、ヒートポンプ加熱手
段１の炊上能力が低いにも拘わらず給湯負荷が高く、従
って、特に湯切れ防止の観点から、運転効率よりも炊上
能力の増大を図る必要がある場合であり、（ロー１）外
気温が高い時の昼間時間帯では、ヒートポンプ加熱手段
１の炊上能力が高いにも拘わらず給湯負荷が低いことか
ら、炊上能力に余裕があり、従って、高効率運転による
省エネ性を重視すべき場合であり、（ハー１）夜間は、
外気温が高いときも低いときもその給湯負荷は共に低
く、且つ炊き上げについての時間的余裕が十分にあり、
従って、高効率運転による省エネ性を重視すべき場合で
ある。According to the classification, (E1)
In the daytime when the outside air temperature is low, the hot water supply load is high in spite of the low heating capacity of the heat pump heating means 1, and therefore, from the viewpoint of preventing running out of hot water, the cooking capacity is increased more than the operating efficiency. (B-1) In the daytime when the outside air temperature is high, the heating capacity of the heat pump heating means 1 is low in spite of the high heating capacity, so there is a margin in the cooking capacity. Yes, therefore, it is necessary to emphasize energy saving by high efficiency operation.
Both when the outside temperature is high and low, the hot water supply load is low, and there is enough time for cooking.
Therefore, this is a case where emphasis should be placed on energy saving by high-efficiency operation.
【００３９】このような観点から、この実施形態におい
ては、上記圧縮機１１の運転周波数を、（イー２）外気
温が低い時の昼間時間帯では、図４におけるＢ点、即
ち、運転効率は多少落ちるもののヒートポンプ加熱手段
１の能力増加が望める運転周波数「ｂ」に設定し、（ロ
ー２）外気温が高い時の昼間時間帯では、図４における
Ａ点、即ち、運転効率が最も高い運転周波数「ａ」に設
定し、（ハー２）夜間では、外気温の高低に拘わらず一
律に、図４におけるＡ点、即ち、運転効率が最も高い運
転周波数「ａ」に設定している。From this point of view, in this embodiment, the operating frequency of the compressor 11 is set to (B2) in the daytime when the outside air temperature is low, ie, the point B in FIG. The operation frequency is set to the operating frequency "b" at which the capacity of the heat pump heating means 1 can be expected to increase although the temperature slightly decreases. (B2) In the daytime period when the outside air temperature is high, the point A in FIG. The frequency is set to "a", and in the night of (H2), the point A in FIG. 4, that is, the operation frequency "a" having the highest operation efficiency is uniformly set regardless of the level of the outside air temperature.
【００４０】かかる運転周波数の設定制御によって、ヒ
ートポンプ給湯装置Ｚの湯切れの防止と省エネ運転との
両立を実現するものである。By controlling the setting of the operating frequency, it is possible to realize both the prevention of running out of the heat pump hot water supply device Z and the energy saving operation.
【００４１】ここで、図２のフローチャートに基づい
て、上記制御器５による運転制御を具体的に説明する。Here, the operation control by the controller 5 will be specifically described based on the flowchart of FIG.
【００４２】制御開始後、先ず、ステップＳ１におい
て、現在は昼間時間帯であるのかどうかを判定する。こ
こで、昼間時間帯ではない、即ち、夜間時間帯であると
判定された場合には、ステップＳ２において第１温度検
出手段ＴＨ１の検出値が６０℃以上であるかどうか（即
ち、現在、高温湯が満タン状態であるかどうか）を判定
し、６０℃以上である場合（即ち、満タン状態である場
合）には、これ以上の貯湯は必要でないため、ヒートポ
ンプ給湯装置Ｚの運転を停止させる（ステップＳ１
１）。これに対して、６０℃以下である場合には、貯湯
量の増大を図るべくヒートポンプ給湯装置Ｚの運転を開
始させる（ステップＳ３）が、その際、現在は夜間時間
帯であるので上記圧縮機１１の運転周波数を高効率点
（即ち、図４のＡ点）に設定し、高効率運転させる。After the start of the control, first, in step S1, it is determined whether or not the current time is in the daytime. Here, if it is determined that it is not during the daytime, that is, it is determined that it is during the nighttime, it is determined in step S2 whether the detection value of the first temperature detecting means TH1 is equal to or higher than 60 ° C. It is determined whether the hot water is full or not. If the temperature is 60 ° C. or higher (that is, if the hot water is full), the operation of the heat pump hot water supply device Z is stopped because no more hot water is needed. (Step S1
1). On the other hand, when the temperature is not higher than 60 ° C., the operation of the heat pump water heater Z is started to increase the amount of hot water stored (step S3). The operation frequency of No. 11 is set to a high efficiency point (that is, point A in FIG. 4), and high efficiency operation is performed.
【００４３】一方、ステップＳ１において、現在は昼間
時間帯であると判定された場合には、さらにステップＳ
４において、風呂給湯前であるかどうか、即ち、給湯負
荷の急増が生じ得る状態かどうかを判定する。ここで、
風呂給湯前（即ち、急激な給湯負荷の増大は生じない状
態）と判定された場合には、さらにステップＳ８におい
て、第１温度検出手段ＴＨ１の検出値が６０℃以上であ
るかどうか（即ち、現在、高温湯が満タン状態であるか
どうか）を判定し、６０℃以上である場合（即ち、満タ
ン状態である場合）には、これ以上の貯湯は必要でない
ため、ヒートポンプ給湯装置Ｚの運転を停止させる（ス
テップＳ１１）。これに対して、第１温度検出手段ＴＨ
１の検出値が６０℃以下である場合には、貯湯量の増大
を図るべくヒートポンプ給湯装置Ｚの運転を開始させる
（ステップＳ９）が、その際、給湯負荷が小さいので、
上記圧縮機１１の運転周波数を高効率点（即ち、図４の
Ａ点）に設定し、高効率運転させる。On the other hand, if it is determined in step S1 that the current time is during the daytime, the process proceeds to step S1.
In 4, it is determined whether or not it is before the hot water supply, that is, whether or not a rapid increase in hot water supply load can occur. here,
If it is determined that the temperature is before the bath water supply (that is, a state in which the rapid increase of the hot water supply load does not occur), it is further determined in step S8 whether the detection value of the first temperature detection means TH1 is equal to or higher than 60 ° C. It is determined whether the high-temperature hot water is currently full or not. If the temperature is 60 ° C. or higher (that is, if the hot water is full), no more hot water is required. The operation is stopped (step S11). On the other hand, the first temperature detecting means TH
If the detected value of 1 is 60 ° C. or less, the operation of the heat pump hot water supply device Z is started to increase the amount of hot water storage (step S9).
The operating frequency of the compressor 11 is set to a high efficiency point (that is, point A in FIG. 4), and high efficiency operation is performed.
【００４４】また、ステップＳ４において、風呂給湯後
であると判定された場合（即ち、風呂給湯によって残湯
量が低下したと思われる場合）には、先ずステップＳ５
において第２温度検出手段ＴＨ２の検出値が６０℃以上
であるかどうか（即ち、現在、高温湯が湯切れを生じな
い最少限貯湯量以上であるかどうか）を判定する。そし
て、第２温度検出手段ＴＨ２の検出値が６０℃以上であ
る場合（即ち、最少限貯湯量以上の貯湯量があり、且つ
風呂給湯後であってこれ以上に大きな給湯負荷は発生し
ないと思われる場合）には、まだ追炊きをする必要はな
いものと判断し、ヒートポンプ給湯装置Ｚの運転を停止
させる（ステップＳ１１）。In step S4, when it is determined that the hot water has been supplied after the bath (that is, when it is considered that the amount of remaining hot water has decreased due to the hot water), first, in step S5.
It is determined whether the detected value of the second temperature detecting means TH2 is equal to or higher than 60 ° C. (that is, whether the high-temperature hot water is equal to or more than the minimum hot water storage amount at which hot water does not run out). When the detected value of the second temperature detecting means TH2 is equal to or higher than 60 ° C. (that is, the amount of hot water stored is equal to or more than the minimum amount of hot water stored, and it is considered that no more large hot water supply load is generated after hot water supply. ), It is determined that it is not necessary to perform additional cooking, and the operation of the heat pump water heater Z is stopped (step S11).
【００４５】これに対して、第２温度検出手段ＴＨ２の
検出値が６０℃以下である場合には、貯湯量が最少限湯
量以下に低下し、従って湯切れ防止の観点から追炊きが
必要と判断される場合には、先ずステップＳ６において
現在の外気温が２０℃以下がどうか（即ち、ヒートポン
プ加熱手段１の炊上能力が高い環境下であるのか低い環
境下であるのか）を判定する。ここで、外気温が２０℃
以上であると判定された場合には、ヒートポンプ加熱手
段１の炊上能力が高い環境下であって、それ以上に高い
炊上能力での追炊きを必要としないため、この場合には
ヒートポンプ給湯装置Ｚを高効率点で追炊き運転させて
貯湯量の回復を図る（ステップＳ７）。一方、外気温が
２０℃以下である場合には、ヒートポンプ加熱手段１の
炊上能力が低い環境下であって、湯切れ防止を最重要視
すべき場合であるので、この場合には上記圧縮機１１の
運転周波数を高めてヒートポンプ給湯装置Ｚを高能力点
で追炊き運転させて貯湯量の早期の回復を図る（ステッ
プＳ１０）。On the other hand, when the detected value of the second temperature detecting means TH2 is 60 ° C. or less, the amount of hot water drops to the minimum amount of hot water or less, so that additional cooking is necessary from the viewpoint of prevention of running out of hot water. If it is determined, first, in step S6, it is determined whether the current outside air temperature is equal to or lower than 20 ° C. (that is, whether the heating capacity of the heat pump heating means 1 is in a high or low environment). Here, the outside temperature is 20 ° C
If it is determined that the above conditions are satisfied, it is an environment in which the heating capacity of the heat pump heating means 1 is high, and it is not necessary to perform additional cooking with a higher heating capacity. The apparatus Z is operated with additional cooking at a high efficiency point to recover the hot water storage amount (step S7). On the other hand, when the outside air temperature is equal to or lower than 20 ° C., it is an environment in which the heating capacity of the heat pump heating means 1 is low and the prevention of running out of hot water should be regarded as the most important. The operating frequency of the machine 11 is increased, and the heat pump hot water supply device Z is additionally cooked and operated at a high capacity point to aim for an early recovery of the hot water storage amount (step S10).
【００４６】以上のように、ヒートポンプ給湯装置Ｚの
運転制御が外気温と１日の時間帯の双方に基づいて行わ
れることで、ヒートポンプ給湯装置Ｚの湯切れの防止と
省エネ運転との両立が実現されるものである。As described above, since the operation control of the heat pump hot water supply device Z is performed based on both the outside air temperature and the time period of one day, the prevention of running out of hot water and the energy saving operation of the heat pump hot water supply device Z can be achieved at the same time. It is realized.
【００４７】尚、上記実施形態においては、給水を直接
ヒートポンプ加熱手段１の水熱交換器１２に導入し、こ
こでの熱交換により得られた湯を貯湯タンク２１に貯湯
する方式のものを例にとって説明しているが、本願発明
はかかる方式のものに限定されるものではなく、例え
ば、貯湯タンク２１とヒートポンプ加熱手段１の水熱交
換器１２との間で水を循環させて湯を得る方式とか、ヒ
ートポンプ加熱手段１側に設けた加熱用熱交換器を貯湯
タンク２１内に配置し該貯湯タンク２１内の水を加熱す
る方式等、種々の方式のものを採用し得ることは勿論で
ある。In the above-described embodiment, an example is shown in which water is introduced directly into the water heat exchanger 12 of the heat pump heating means 1 and hot water obtained by heat exchange is stored in the hot water storage tank 21. However, the present invention is not limited to this type, and, for example, circulates water between the hot water storage tank 21 and the water heat exchanger 12 of the heat pump heating means 1 to obtain hot water. Of course, various methods such as a method of heating the water in the hot water storage tank 21 by disposing a heating heat exchanger provided on the heat pump heating means 1 side in the hot water storage tank 21 and the like can be adopted. is there.
【図１】本願発明にかかるヒートポンプ給湯装置のシス
テム図である。FIG. 1 is a system diagram of a heat pump water heater according to the present invention.
【図２】図１に示したヒートポンプ給湯装置の運転制御
フローチャートである。FIG. 2 is an operation control flowchart of the heat pump water heater shown in FIG.
【図３】ヒートポンプ給湯装置の運転制御における制御
領域マップである。FIG. 3 is a control region map in the operation control of the heat pump water heater.
【図４】ヒートポンプ給湯装置における「運転周波数−
運転効率」線図である。FIG. 4 shows the “operation frequency—
It is a "operating efficiency" diagram.
【図５】ヒートポンプ給湯装置における外気温に対する
給湯負荷及び炊上能力の変化状態説明図である。FIG. 5 is a diagram illustrating how the heat pump water heater changes the hot water supply load and the cooking capacity with respect to the outside air temperature.
【図６】ヒートポンプ給湯装置における外気温に対する
炊上湯量の変化状態説明図である。FIG. 6 is an explanatory diagram of a change state of a cooking hot water amount with respect to an outside air temperature in the heat pump hot water supply device.
【図７】冬場における一日の給湯負荷の変化状態説明図
である。FIG. 7 is an explanatory diagram of a change state of a daily hot water supply load in winter.
【図８】冬場における一日のヒートポンプ加熱量の変化
状態説明図である。FIG. 8 is an explanatory diagram of a change state of a heat pump heating amount in one day in winter.
【図９】冬場における一日の残湯量の変化状態説明図で
ある。FIG. 9 is an explanatory diagram of a change state of a remaining hot water amount in a day in winter.
【図１０】夏場における一日の給湯負荷の変化状態説明
図である。FIG. 10 is an explanatory diagram of a change state of a daily hot water supply load in summer.
【図１１】夏場における一日のヒートポンプ加熱量の変
化状態説明図である。FIG. 11 is an explanatory diagram of a change state of a heat pump heating amount per day in summer.
【図１２】夏場における一日の残湯量の変化状態説明図
である。FIG. 12 is a diagram illustrating a change in the amount of remaining hot water in a day in summer.
１はヒートポンプ加熱手段、２は貯湯・給湯手段、３は
外気温検出手段、４は計時手段、５は制御器、１１は圧
縮機、１２は水熱交換器、１３は減圧手段、１４は空気
熱交換器、２１は貯湯タンク、２２は水ポンプ、３１〜
３５は配管、ＴＨ１は第１温度検出手段、ＴＨ２は、Ｚ
はヒートポンプ給湯装置である。1 is a heat pump heating means, 2 is a hot water storage / hot water supply means, 3 is an outside air temperature detecting means, 4 is a timing means, 5 is a controller, 11 is a compressor, 12 is a water heat exchanger, 13 is a decompression means, and 14 is air Heat exchanger, 21 is a hot water storage tank, 22 is a water pump, 31 to 31
35 is a pipe, TH1 is first temperature detecting means, TH2 is Z
Is a heat pump water heater.
Claims (6)
圧縮機（１１）を備えたヒートポンプ加熱手段（１）と
貯湯タンク（２１）とを配管により接続して構成される
ヒートポンプ給湯装置であって、 外気温を検出する外気温検出手段（３）と、時刻を検出
する計時手段（４）と、上記外気温検出手段（３）によ
り検出された外気温と一日の時間帯の双方に基づいて上
記圧縮機（１１）の運転周波数を変更する制御手段
（５）とを備えたことを特徴とするヒートポンプ給湯装
置。1. A heat pump hot water supply system comprising a heat pump heating means (1) provided with a compressor (11) having a variable capacity based on an operation frequency and a hot water storage tank (21) connected by piping. Outside temperature detecting means (3) for detecting outside temperature, time measuring means (4) for detecting time, and both the outside temperature detected by the outside temperature detecting means (3) and the time zone of the day. Control means (5) for changing the operating frequency of the compressor (11) based on the heat pump hot water supply apparatus.
機（１１）を高効率が得られる第１の周波数で運転する
ことを特徴とするヒートポンプ給湯装置。2. The heat pump water heater according to claim 1, wherein the control means (5) operates the compressor (11) at a first frequency at which high efficiency is obtained during a night time period. .
機（１１）の運転周波数を外気温に応じて変更設定する
ことを特徴とするヒートポンプ給湯装置。3. The heat pump water heater according to claim 1, wherein the control means (5) changes and sets an operation frequency of the compressor (11) in accordance with an outside air temperature in a daytime period.
得られる第１の周波数で、外気温が低いときには該第１
の周波数よりも高周波数側の第２の周波数で運転するこ
とを特徴とするヒートポンプ給湯装置。4. The compressor according to claim 3, wherein the compressor has a first frequency at which high efficiency is obtained when the outside air temperature is high, and the first frequency when the outside air temperature is low.
A heat pump hot water supply device that operates at a second frequency higher than the frequency of the heat pump.
2冷媒であることを特徴とするヒートポンプ給湯装置。5. The refrigerant according to claim 1, wherein the refrigerant circulating in the heat pump heating means (1) is CO 2.
Heat pump hot water supply device characterized by two refrigerants.
徴とするヒートポンプ給湯装置。6. The heat pump water heater according to claim 1, wherein the compressor (11) is a swing type compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000009878A JP3738637B2 (en) | 2000-01-19 | 2000-01-19 | Heat pump water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000009878A JP3738637B2 (en) | 2000-01-19 | 2000-01-19 | Heat pump water heater |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2005249143A Division JP2005345099A (en) | 2005-08-30 | 2005-08-30 | Heat pump hot-water supply device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001201177A true JP2001201177A (en) | 2001-07-27 |
| JP3738637B2 JP3738637B2 (en) | 2006-01-25 |
Family
ID=18537968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000009878A Expired - Fee Related JP3738637B2 (en) | 2000-01-19 | 2000-01-19 | Heat pump water heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3738637B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003090631A (en) * | 2001-09-13 | 2003-03-28 | Sanyo Electric Co Ltd | Heat pump type water heater |
| JP2010223543A (en) * | 2009-03-25 | 2010-10-07 | Toshiba Carrier Corp | Heat insulating control method of hot water storage tank |
| JP2012197968A (en) * | 2011-03-22 | 2012-10-18 | Mitsubishi Heavy Ind Ltd | Heat pump system |
| CN110500821A (en) * | 2019-07-15 | 2019-11-26 | 青岛海尔空调器有限总公司 | The control method of transducer air conditioning |
-
2000
- 2000-01-19 JP JP2000009878A patent/JP3738637B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003090631A (en) * | 2001-09-13 | 2003-03-28 | Sanyo Electric Co Ltd | Heat pump type water heater |
| JP4693308B2 (en) * | 2001-09-13 | 2011-06-01 | 三洋電機株式会社 | Heat pump type water heater |
| JP2010223543A (en) * | 2009-03-25 | 2010-10-07 | Toshiba Carrier Corp | Heat insulating control method of hot water storage tank |
| JP2012197968A (en) * | 2011-03-22 | 2012-10-18 | Mitsubishi Heavy Ind Ltd | Heat pump system |
| CN110500821A (en) * | 2019-07-15 | 2019-11-26 | 青岛海尔空调器有限总公司 | The control method of transducer air conditioning |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3738637B2 (en) | 2006-01-25 |
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