JPS63105367A - Hot-water supply system utilizing solar heat - Google Patents
Hot-water supply system utilizing solar heatInfo
- Publication number
- JPS63105367A JPS63105367A JP61249932A JP24993286A JPS63105367A JP S63105367 A JPS63105367 A JP S63105367A JP 61249932 A JP61249932 A JP 61249932A JP 24993286 A JP24993286 A JP 24993286A JP S63105367 A JPS63105367 A JP S63105367A
- Authority
- JP
- Japan
- Prior art keywords
- heat
- heat exchanger
- water
- valve
- refrigerant
- 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 44
- 239000003507 refrigerant Substances 0.000 claims abstract description 17
- 238000010257 thawing Methods 0.000 claims abstract description 13
- 238000005338 heat storage Methods 0.000 claims description 17
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000007710 freezing Methods 0.000 abstract description 7
- 230000008014 freezing Effects 0.000 abstract description 7
- 239000007788 liquid Substances 0.000 abstract description 5
- 238000009835 boiling Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、太陽熱を利用したヒートポンプ式給湯装置に
関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a heat pump water heater that utilizes solar heat.
従来の技術
従来のこの種の太陽熱利用給湯装置は、第２図に示すよ
うに、蓄熱槽９内の水は、全体が均一に徐々に昇温して
ゆ〈多循環沸上げ方式であシ、その除霜運転時には四方
弁２を切換えて、冷媒は集熱運転時と逆方向に流れ、集
熱器６の霜を溶かし、逆止弁６．熱交換器３．四方弁２
．アキュームレータ７を通り、圧縮機１へ戻る。この時
、給湯水加熱回路側は、循環ポンプ８により蓄熱槽９内
の水が熱交換器３内を循環しており、熱交換器３で冷媒
に熱を与え、冷却された水が蓄熱槽９へ戻るようになっ
ていた。2. Description of the Related Art As shown in FIG. 2, this type of conventional solar water heating system employs a multi-circulation boiling system in which the temperature of the water in the heat storage tank 9 is uniformly and gradually raised throughout. During the defrosting operation, the four-way valve 2 is switched, and the refrigerant flows in the opposite direction to that during the heat collection operation, melting the frost on the heat collector 6 and closing the check valve 6. Heat exchanger 3. Four-way valve 2
．． It passes through the accumulator 7 and returns to the compressor 1. At this time, on the hot water heating circuit side, the water in the heat storage tank 9 is circulated through the heat exchanger 3 by the circulation pump 8, and the heat exchanger 3 gives heat to the refrigerant, and the cooled water is transferred to the heat storage tank. It was starting to go back to 9.
発明が解決しようとする問題点
しかしながら第３図に示すような蓄熱槽９を挟層沸上げ
方式にした場合においては、上記のような構成では、除
霜運転時に冷却された冷水が蓄熱槽９上部へ流入し、蓄
熱槽９上部にためられた高温水の温度を低下させる為、
除霜運転時には循環ポンプ８を停止し、冷水の蓄熱槽９
上部への流入を防ぐ必要がある。ところか、上記の方法
では、熱交換器３内水は冷媒に吸熱され凍結し、熱交換
器３の変形、破損が生じるという問題点を有していた。Problems to be Solved by the Invention However, when the heat storage tank 9 is of a narrow-layer boiling type as shown in FIG. In order to lower the temperature of the high temperature water flowing into the upper part and stored in the upper part of the heat storage tank 9,
During defrosting operation, the circulation pump 8 is stopped and the cold water is stored in the heat storage tank 9.
It is necessary to prevent it from flowing into the upper part. However, the above method has a problem in that the water in the heat exchanger 3 absorbs heat from the refrigerant and freezes, causing deformation and damage to the heat exchanger 3.
本発明はかかる従来の問題を解消するもので、積層沸上
げ方式の太陽熱利用給湯装置において、除霜運転時の熱
交換器内水の凍結を防止することを目的とする。The present invention solves such conventional problems, and aims to prevent water in a heat exchanger from freezing during defrosting operation in a stacked boiling solar water heater.
問題点を解決するための手段
上記問題点を解決するために本発明の太陽熱利用給湯装
置は、集熱回路側に熱交換器と並列にバイパス回路を配
置したという構成を備えたものである。Means for Solving the Problems In order to solve the above problems, the solar water heating system of the present invention has a configuration in which a bypass circuit is arranged in parallel with the heat exchanger on the heat collection circuit side.
作 用
本発明は上記した構成によって、除霜運転時に冷媒はバ
イパス回路を流れ、熱交換器内を流れないため、循環ポ
ンプを停止しておいても、熱交換器内水の凍結は起こら
ず、よって熱交換器の凍結による変形、破損が防止でき
、また蓄熱槽上部への冷水の流入もなくなるため蓄熱槽
上部高温水の温度低下も生じなくなるのである。Effect: Due to the above-described configuration of the present invention, during defrosting operation, the refrigerant flows through the bypass circuit and does not flow inside the heat exchanger, so even if the circulation pump is stopped, the water in the heat exchanger does not freeze. Therefore, deformation and damage of the heat exchanger due to freezing can be prevented, and since cold water does not flow into the upper part of the heat storage tank, the temperature of the high temperature water in the upper part of the heat storage tank does not decrease.
実施例
以下、本発明の実施例を添付図面にもとづいて説明する
。第１図において、１は圧縮機、２は四方弁、３は熱交
換器、４は膨張弁、５は前記膨張弁４と並列に配置して
ある第１の逆止弁、６は集熱器、７はアキュームレータ
、１ｏは前記熱交換器３と並列に配置してあるバイパス
回路、１１は前記バイパス回路１ｏに配置してある第２
の逆止弁、１２は前記四方弁２と前記熱交換器３の間に
配置された第３の逆止弁、１３は集熱配管で、これらよ
り集熱回路が構成される。また、８は循環ポンプ、３は
熱交換器、９は蓄熱槽で、これらより給湯水加熱回路が
構成される。Embodiments Hereinafter, embodiments of the present invention will be described based on the accompanying drawings. In FIG. 1, 1 is a compressor, 2 is a four-way valve, 3 is a heat exchanger, 4 is an expansion valve, 5 is a first check valve arranged in parallel with the expansion valve 4, and 6 is a heat collector. 7 is an accumulator, 1o is a bypass circuit arranged in parallel with the heat exchanger 3, and 11 is a second bypass circuit arranged in the bypass circuit 1o.
12 is a third check valve disposed between the four-way valve 2 and the heat exchanger 3, and 13 is heat collection piping, which constitute a heat collection circuit. Further, 8 is a circulation pump, 3 is a heat exchanger, and 9 is a heat storage tank, which constitute a hot water heating circuit.
上記構成において、膨張弁４で減圧され低圧二相状態と
なった冷媒は集熱器６−で大気熱及び太陽熱を吸熱し気
化して、集熱配管１３．四方弁２゜アキュームレータ７
を介して、圧縮機１に戻る。In the above configuration, the refrigerant, which has been depressurized by the expansion valve 4 and becomes a low-pressure two-phase state, absorbs atmospheric heat and solar heat and vaporizes in the heat collector 6-, and is vaporized in the heat collection pipe 13. Four-way valve 2゜accumulator 7
It returns to the compressor 1 via.
圧縮機１で高温高圧となったガス冷媒は、四方弁２、第
３の逆止弁１２を介して熱交換器３へ入シ、熱交換器３
において水に放熱し、高圧液状態となり集熱配管１３を
介して膨張弁４へ送られ減圧され集熱器６で気化すると
いうサイクルを繰り返す。The gas refrigerant that has become high temperature and high pressure in the compressor 1 enters the heat exchanger 3 via the four-way valve 2 and the third check valve 12.
The heat is dissipated into the water, the water becomes a high-pressure liquid state, is sent to the expansion valve 4 via the heat collection pipe 13, is depressurized, and vaporized in the heat collector 6, and the cycle is repeated.
一方、給湯水加熱回路側は、蓄熱槽９の下部から循環ポ
ンプ８によシ送られてきた低温水は熱交換器３で高温高
圧冷媒より吸熱し、高温水となり蓄熱槽９の上部へ戻る
。この時、熱交換器３の出口に設けられたサーミスタに
より、集熱量が変化した場合にも循環ポンプ８の循環水
量が変化し熱交換器３の出口水温は常に一定となり、蓄
熱槽９の上部より徐々に高温水が貯えられてゆく。On the other hand, on the hot water heating circuit side, the low-temperature water sent from the lower part of the heat storage tank 9 by the circulation pump 8 absorbs heat from the high-temperature and high-pressure refrigerant in the heat exchanger 3, becomes high-temperature water, and returns to the upper part of the heat storage tank 9. . At this time, the thermistor installed at the outlet of the heat exchanger 3 changes the amount of circulating water in the circulation pump 8 even when the amount of heat collected changes, so that the water temperature at the outlet of the heat exchanger 3 is always constant, and the upper part of the heat storage tank 9 High temperature water is gradually stored.
低外気温時に集熱運転を行なうと、集熱器６に着霜が生
じ、集熱能力が低下するため、除霜運転を行なう必要が
ある。除霜運転時には、四方弁２を切換えて、圧縮機１
よシ吐出された高温ガス冷媒は、四方弁２．集熱配管１
３を介して、集熱器ｅに流入し、霜を溶かして凝縮液化
し、第１の適正弁６．集熱配管１３．バイパス回路１０
．第２の逆止弁１１．四方弁２．アキュームレータ７を
介して圧縮機１に戻る。If heat collection operation is performed at a low outside temperature, frost will form on the heat collector 6 and the heat collection ability will decrease, so it is necessary to perform defrosting operation. During defrosting operation, four-way valve 2 is switched to compressor 1.
The discharged high-temperature gas refrigerant is passed through the four-way valve 2. Heat collection piping 1
3, flows into the collector e, melts the frost and condenses into liquid, and passes through the first proper valve 6. Heat collection piping 13. Bypass circuit 10
．． Second check valve 11. Four-way valve 2. It returns to the compressor 1 via the accumulator 7.
上記構成において、除霜運転時には、集熱器６で液化し
た低温液冷媒は、Ｍ３の逆止弁１２により熱交換器３を
通過せずにバイパス回路１０、第２の逆止弁１１を通過
して圧縮機１に戻る。このため、熱交換器３内において
、低温液冷媒が水側から吸熱し熱交換器ａ内の水が凍結
することによる熱交換器３の変形・破損を防ぐことがで
きるという効果がある。また、上記のように熱交換器３
内水の凍結による熱交換器３の変形・破損の恐れがない
ため、除霜運転中は循環ポンプ８を停止することが可能
となり、蓄撚槽９上部への低温水の流入がなく、蓄熱槽
９上部にためられた高温水の温度の低下を防止できると
いう効果がある。In the above configuration, during defrosting operation, the low temperature liquid refrigerant liquefied in the heat collector 6 passes through the bypass circuit 10 and the second check valve 11 without passing through the heat exchanger 3 due to the check valve 12 of M3. and return to compressor 1. Therefore, in the heat exchanger 3, the low temperature liquid refrigerant absorbs heat from the water side, and it is possible to prevent the heat exchanger 3 from being deformed or damaged due to freezing of the water in the heat exchanger a. In addition, as described above, the heat exchanger 3
Since there is no risk of deformation or damage to the heat exchanger 3 due to freezing of the internal water, it is possible to stop the circulation pump 8 during defrosting operation, and there is no flow of low-temperature water into the upper part of the twist storage tank 9, which prevents heat storage. This has the effect of preventing a drop in the temperature of the high temperature water stored in the upper part of the tank 9.
発明の効果
以上のように本発明の太陽熱利用給湯装置によれば次の
効果が得られる。Effects of the Invention As described above, the solar water heating apparatus of the present invention provides the following effects.
（１）集熱回路に熱交換器と並列にバイパス回路を配置
してあるので、除霜運転時低温冷媒が熱交換器内に流入
せず、熱交換器内水の凍結による熱交換器の変形書損傷
が防止できるという効果がある。(1) Since a bypass circuit is placed in the heat collection circuit in parallel with the heat exchanger, low-temperature refrigerant does not flow into the heat exchanger during defrosting operation, and the heat exchanger is damaged due to freezing of the water inside the heat exchanger. This has the effect of preventing damage to the modified book.
＠）除霜運転中に循環ポンプを停止することができるた
め、蓄熱槽上部への低温水の流入がなく、蓄熱槽上部に
ためられた高温水の温度低下を防止でき、常に高温水の
採湯ができる太陽熱利用給湯装置が提供できる。@) Since the circulation pump can be stopped during defrosting operation, low-temperature water does not flow into the upper part of the heat storage tank, which prevents the temperature of high-temperature water stored in the upper part of the heat storage tank from dropping, and allows high-temperature water to be constantly drawn. We can provide a solar hot water supply device that can produce hot water.
第１図は本発明の一実施例である太陽熱利用給湯装置の
構成図、第２図は多循環沸上げ方式の従来の構成図、第
３図は積層製上げ方式の従来の構成図である。
１・・・・・・圧縮機、２・・・・・・四方弁、３・・
・・・・熱交換器、８・・・・・・循環ポンプ、９・・
・・・・蓄熱槽、１０・・・・・・バイパス回路、１１
・・・・・・第１の逆止弁、１２・・・・・・第２の逆
止弁。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名／−
−−Ｌ穐ギ■
第２図
第３図Fig. 1 is a block diagram of a solar water heating system that is an embodiment of the present invention, Fig. 2 is a conventional block diagram of a multi-circulation boiling system, and Fig. 3 is a conventional block diagram of a laminated boiling system. . 1... Compressor, 2... Four-way valve, 3...
...Heat exchanger, 8...Circulation pump, 9...
... Heat storage tank, 10 ... Bypass circuit, 11
...First check valve, 12...Second check valve. Name of agent: Patent attorney Toshio Nakao and 1 other person/-
--L Akigi■ Figure 2 Figure 3
Claims (2)
及び前記膨張弁と並列に配置してある逆止弁、集熱器、
アキュームレータからなる集熱回路と、循環ポンプ、熱
交換器、蓄熱槽からなる給湯水加熱回路とからなり、前
記蓄熱槽は、上部から一定温度の高温水がたまってゆく
積層沸上げ方式とし、集熱回路側に前記熱交換器と並列
にバイパス回路を配置した太陽熱利用給湯装置。(1) Compressor, four-way valve, heat exchanger, heat collection piping, expansion valve,
and a check valve and a heat collector arranged in parallel with the expansion valve;
It consists of a heat collection circuit consisting of an accumulator, and a hot water heating circuit consisting of a circulation pump, a heat exchanger, and a heat storage tank. A solar heat water heating system in which a bypass circuit is arranged in parallel with the heat exchanger on the heat circuit side.
うに逆止弁が配置され、また四方弁と前記熱交換器の間
に、集熱運転時に冷媒が流れるように逆止弁が配置され
た特許請求の範囲第１項記載の太陽熱利用給湯装置。(2) A check valve is arranged in the bypass circuit so that refrigerant flows during defrosting operation, and a check valve is arranged between the four-way valve and the heat exchanger so that refrigerant flows during heat collection operation. A solar water heating device according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61249932A JPS63105367A (en) | 1986-10-21 | 1986-10-21 | Hot-water supply system utilizing solar heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61249932A JPS63105367A (en) | 1986-10-21 | 1986-10-21 | Hot-water supply system utilizing solar heat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63105367A true JPS63105367A (en) | 1988-05-10 |
Family
ID=17200318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61249932A Pending JPS63105367A (en) | 1986-10-21 | 1986-10-21 | Hot-water supply system utilizing solar heat |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63105367A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2497171B (en) * | 2012-11-02 | 2013-10-16 | Asd Entpr Ltd | Improvements to thermodynamic solar heat transfer systems |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6113262B2 (en) * | 1981-06-19 | 1986-04-12 | Hitachi Ltd | |
| JPS61225553A (en) * | 1985-03-29 | 1986-10-07 | 松下電器産業株式会社 | Heat collector |
-
1986
- 1986-10-21 JP JP61249932A patent/JPS63105367A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6113262B2 (en) * | 1981-06-19 | 1986-04-12 | Hitachi Ltd | |
| JPS61225553A (en) * | 1985-03-29 | 1986-10-07 | 松下電器産業株式会社 | Heat collector |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2497171B (en) * | 2012-11-02 | 2013-10-16 | Asd Entpr Ltd | Improvements to thermodynamic solar heat transfer systems |
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