JPH04340057A - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JPH04340057A JPH04340057A JP11165191A JP11165191A JPH04340057A JP H04340057 A JPH04340057 A JP H04340057A JP 11165191 A JP11165191 A JP 11165191A JP 11165191 A JP11165191 A JP 11165191A JP H04340057 A JPH04340057 A JP H04340057A
- Authority
- JP
- Japan
- Prior art keywords
- heat storage
- heat
- storage material
- air conditioner
- heat storing
- 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
- 239000003566 sealing material Substances 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 8
- 238000005338 heat storage Methods 0.000 claims description 61
- 239000011232 storage material Substances 0.000 claims description 35
- 150000005846 sugar alcohols Polymers 0.000 abstract description 11
- 239000002184 metal Substances 0.000 abstract description 5
- 229910052751 metal Inorganic materials 0.000 abstract description 5
- 230000003647 oxidation Effects 0.000 abstract description 4
- 238000007254 oxidation reaction Methods 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 150000007524 organic acids Chemical class 0.000 abstract description 3
- 235000005985 organic acids Nutrition 0.000 abstract description 3
- 230000007423 decrease Effects 0.000 abstract description 2
- 230000015556 catabolic process Effects 0.000 abstract 3
- 238000006731 degradation reaction Methods 0.000 abstract 3
- 239000007789 gas Substances 0.000 description 7
- 230000006866 deterioration Effects 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 230000001590 oxidative effect Effects 0.000 description 5
- 238000010257 thawing Methods 0.000 description 5
- 239000002202 Polyethylene glycol Substances 0.000 description 4
- 239000006096 absorbing agent Substances 0.000 description 4
- 229920001223 polyethylene glycol Polymers 0.000 description 4
- 239000003507 refrigerant Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 230000008014 freezing Effects 0.000 description 3
- 229920013716 polyethylene resin Polymers 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
Landscapes
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は空気調和機、より詳細に
は蒸発器、凝縮器、圧縮機及び蓄熱材が充填された蓄熱
装置等を備えた空気調和機に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner, and more particularly to an air conditioner equipped with an evaporator, a condenser, a compressor, a heat storage device filled with a heat storage material, and the like.
【０００２】0002
【従来の技術】一般に用いられているヒートポンプ式空
気調和機は、室内の暖房を行う際には室外熱交換器の除
霜を行う必要があり、この除霜を主として、圧縮機から
吐出される高温高圧ガスを前記室外熱交換器に送り込む
ことにより行っている。しかしながら、圧縮機から吐出
される高温高圧ガスを前記室外熱交換器に送ることによ
り、室内の暖房が中断されることとなり、この問題を解
決するために、蓄熱装置を別途設け、この蓄熱装置での
蓄熱を利用することにより除霜と室内の暖房とを同時に
行うものも提案されている。[Prior Art] Generally used heat pump type air conditioners require defrosting of the outdoor heat exchanger when heating the room. This is done by sending high-temperature, high-pressure gas into the outdoor heat exchanger. However, by sending the high-temperature, high-pressure gas discharged from the compressor to the outdoor heat exchanger, indoor heating is interrupted.In order to solve this problem, a heat storage device is separately installed, and this heat storage device Some proposals have also been made for defrosting and heating the room at the same time by utilizing the heat stored in the air.
【０００３】すなわち、前記圧縮機から吐出される高温
高圧のガスを前記蓄熱装置に導入して該蓄熱装置での蓄
熱を行い、この蓄熱を除霜時に利用するようにしている
。こうした蓄熱装置の蓄熱材には、凝固点以下でも凝固
を起こさない現象、すなわち過冷却現象を起こさず、毒
性がなく、安全性が高い特性を持つことが要求される。
このような特性を有する蓄熱材として、ポリエチレング
リコールやポリプロピレングリコールなどの多価アルコ
ール類が、従来から使用されている。また、これらの多
価アルコール類は、その分子量によって凝固点の融解熱
が相違し、例えば、分子量６０００のポリエチレングリ
コールは凝固点が６０℃で融解熱が４６ｃａｌ／ｇであ
り、分子量を変えることで目的に合った温度帯の潜熱蓄
熱材が容易に得られる。That is, high-temperature, high-pressure gas discharged from the compressor is introduced into the heat storage device to store heat in the heat storage device, and this heat storage is used during defrosting. The heat storage material of such a heat storage device is required to have properties that do not cause solidification even below the freezing point, that is, do not cause supercooling, are nontoxic, and are highly safe. Polyhydric alcohols such as polyethylene glycol and polypropylene glycol have been conventionally used as heat storage materials having such characteristics. In addition, these polyhydric alcohols have different heats of fusion at freezing points depending on their molecular weights. For example, polyethylene glycol with a molecular weight of 6000 has a freezing point of 60°C and a heat of fusion of 46 cal/g, so changing the molecular weight can achieve the desired purpose. A latent heat storage material with a suitable temperature range can be easily obtained.
【０００４】0004
【発明が解決しようとする課題】従来の蓄熱装置の蓄熱
材に多価アルコールを使用した場合、この多価アルコー
ルは１００℃以上の高温状態で長時間保持されると、空
気中の酸素によって酸化劣化し、分子量が低下して潜熱
が得られなくなり、長期安定性に劣るという課題があっ
た。[Problem to be Solved by the Invention] When polyhydric alcohol is used as a heat storage material in a conventional heat storage device, when this polyhydric alcohol is kept at a high temperature of 100°C or more for a long time, it becomes oxidized by oxygen in the air. The problem was that it deteriorated, its molecular weight decreased, it became impossible to obtain latent heat, and its long-term stability was poor.
【０００５】特に、この傾向は銅などの金属が存在する
と、その触媒作用によって加速度的に進行してより顕著
になる。この種空気調和機においては蓄熱材との熱交換
を効率良くするために、蓄熱装置内に銅を使った熱交換
器が多用されるため、蓄熱材である多価アルコール類の
酸化劣化を防止することは重要な課題となっていた。本
発明は、このような課題に鑑み発明されたものであって
、蓄熱材である多価アルコール類の酸化劣化防止し、長
期間にわたって安定した蓄熱効果を有する蓄熱装置を備
えた空気調和機を提供することを目的としている。[0005] In particular, when a metal such as copper is present, this tendency accelerates and becomes more pronounced due to its catalytic action. In this type of air conditioner, a heat exchanger using copper is often used in the heat storage device to improve the efficiency of heat exchange with the heat storage material, which prevents oxidation and deterioration of polyhydric alcohols, which are the heat storage material. This has become an important issue. The present invention was invented in view of these problems, and provides an air conditioner equipped with a heat storage device that prevents oxidative deterioration of polyhydric alcohols, which are heat storage materials, and has a stable heat storage effect over a long period of time. is intended to provide.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
に本発明に係る空気調和機は、蒸発器、凝縮器、圧縮機
及び蓄熱材が充填された蓄熱装置等を備えた空気調和機
において、前記蓄熱材の上層に該蓄熱材に溶解せず、し
かも該蓄熱材よりも低密度の封止材が配設されているこ
とを特徴としている。[Means for Solving the Problems] In order to achieve the above object, an air conditioner according to the present invention is an air conditioner equipped with an evaporator, a condenser, a compressor, a heat storage device filled with a heat storage material, etc. , a sealing material that does not dissolve in the heat storage material and has a lower density than the heat storage material is disposed on the upper layer of the heat storage material.
【０００７】[0007]
【作用】上記構成によれば、蒸発器、凝縮器、圧縮機及
び蓄熱材が充填された蓄熱装置等を備えた空気調和機に
おいて、前記蓄熱材の上層に該蓄熱材に溶解せず、しか
も該蓄熱材よりも低密度の封止材が配設されているので
、前記蓄熱装置内の多価アルコール類よりなる蓄熱材は
、空気と接触することがなくなる。従って、長期にわた
って酸化劣化をおこすことなく安定したものとなり、分
子量が低下して潜熱が得られなくなるといったことは起
こらなくなる。また、前記蓄熱材である多価アルコール
類の酸化劣化によって生成する、有機酸類による金属の
腐食の問題もなくなる。[Function] According to the above structure, in an air conditioner equipped with an evaporator, a condenser, a compressor, a heat storage device filled with a heat storage material, etc., the upper layer of the heat storage material does not dissolve in the heat storage material, and Since the sealing material having a lower density than the heat storage material is provided, the heat storage material made of polyhydric alcohol in the heat storage device does not come into contact with air. Therefore, it becomes stable over a long period of time without causing oxidative deterioration, and it will not occur that the molecular weight decreases and it becomes impossible to obtain latent heat. Furthermore, the problem of corrosion of metals by organic acids produced by oxidative deterioration of polyhydric alcohols, which are the heat storage materials, is also eliminated.
【０００８】[0008]
【実施例】以下、本発明に係る空気調和機の実施例を図
面に基づいて説明する。図１は本発明に係るヒートポン
プ式空気調和機の冷凍サイクルを示す図であり、能力可
変式の圧縮機１１の吐出口は蓄熱装置１２の内部に配設
された放熱器１３を介して、四方弁１４に接続されてい
る。この四方弁１４は、室内熱交換器１５に接続され、
室内熱交換器１５と室外熱交換器１７との間には絞り弁
１６が介装されている。さらに、室外熱交換器１７は四
方弁１４に接続され、四方弁１４は圧縮機１１の吸込口
に接続されている。また、室内熱交換器１５の近傍には
室内ファン２４が、室外熱交換器１７の近傍には室外フ
ァン２５、除霜センサー２６がそれぞれ添設されている
。Embodiments Hereinafter, embodiments of the air conditioner according to the present invention will be described based on the drawings. FIG. 1 is a diagram showing a refrigeration cycle of a heat pump type air conditioner according to the present invention. It is connected to valve 14. This four-way valve 14 is connected to an indoor heat exchanger 15,
A throttle valve 16 is interposed between the indoor heat exchanger 15 and the outdoor heat exchanger 17. Furthermore, the outdoor heat exchanger 17 is connected to a four-way valve 14, and the four-way valve 14 is connected to the suction port of the compressor 11. Further, an indoor fan 24 is provided near the indoor heat exchanger 15, and an outdoor fan 25 and a defrost sensor 26 are provided near the outdoor heat exchanger 17, respectively.
【０００９】図２は蓄熱装置１２の概略断面図であり、
蓄熱槽１８の内部に多価アルコールであるポリエチレン
グリコールからなる蓄熱材１９が充填されており、蓄熱
材１９の上層には、空気との接触を遮断するために封止
材２０が配設されている。封止材２０は蓄熱材１９に溶
解せず、かつ低密度の物資であるポリエチレン樹脂を材
料とした中空成形品となっている。また、蓄熱装置１８
の内部には放熱器１３と共に吸熱器２１が内設されてい
る。吸熱器２１の一端は室内熱交換器１５と絞り弁１６
との間に、他端は絞り弁１６と室外熱交換器１７との間
に、それぞれ接続され吸熱回路２２を構成している。こ
の吸熱回路２２の中途部には、切換弁２３及びキャピラ
リー２８が介装され、通常切換弁２３は閉鎖されている
が、除霜時には除霜センサー２６が駆動され、制御装置
２７からの入力信号で開放されるようになっている。FIG. 2 is a schematic cross-sectional view of the heat storage device 12.
The inside of the heat storage tank 18 is filled with a heat storage material 19 made of polyethylene glycol, which is a polyhydric alcohol, and a sealing material 20 is provided on the upper layer of the heat storage material 19 to block contact with air. There is. The sealing material 20 is a hollow molded product made of polyethylene resin, which is a low-density material that does not dissolve in the heat storage material 19. In addition, the heat storage device 18
A heat absorber 21 is installed together with a heat radiator 13 inside. One end of the heat absorber 21 is connected to the indoor heat exchanger 15 and the throttle valve 16.
The other end is connected between the throttle valve 16 and the outdoor heat exchanger 17, respectively, thereby forming a heat absorption circuit 22. A switching valve 23 and a capillary 28 are interposed in the middle of this heat absorption circuit 22. Normally, the switching valve 23 is closed, but at the time of defrosting, the defrosting sensor 26 is driven and receives an input signal from the control device 27. It is now open to the public.
【００１０】次に、上記したヒートポンプ式空気調和機
の作動を説明する。まず、通常暖房中について説明する
。この場合には、圧縮機１１から吐出された高温高圧ガ
ス冷媒は、蓄熱装置１２の内部の放熱器１３を介して、
四方弁１４に送られ、室内熱交換器１５で液化放熱し、
絞り弁１６で減圧され、室外熱交換器１７で気化吸熱し
、四方弁１４を介して圧縮機１１に吸い込まれる。
この時、室内ファン２４及び室外ファン２５は駆動して
おり、室内熱交換器１５からの放熱によって室内は暖房
される。Next, the operation of the heat pump type air conditioner described above will be explained. First, normal heating will be explained. In this case, the high-temperature, high-pressure gas refrigerant discharged from the compressor 11 passes through the radiator 13 inside the heat storage device 12.
It is sent to the four-way valve 14, and is liquefied and heat-radiated in the indoor heat exchanger 15.
The pressure is reduced by the throttle valve 16 , the heat is vaporized and absorbed by the outdoor heat exchanger 17 , and the gas is sucked into the compressor 11 via the four-way valve 14 . At this time, the indoor fan 24 and the outdoor fan 25 are operating, and the room is heated by heat radiation from the indoor heat exchanger 15.
【００１１】この暖房運転中に室外熱交換器１７に所定
量以上の霜が着霜すると、除霜センサー２６によって検
出され、この検出信号は制御装置２７に入力されると同
時に制御装置２７は切換弁２３を開放し吸熱回路２２を
連通させる。この場合、室内熱交換器１５を出た冷媒は
吸熱回路２２を介して蓄熱装置１２の吸熱器２１に導か
れる。この時室内ファン２４の回転がおさえられており
、室内熱交換器１５では完全には液化されず、冷媒は高
温のガス状態で排出され、切換弁２３においても単に切
換えを行うだけで減圧されず、蓄熱材１９から吸熱する
。さらに吸熱器２１と室外熱交換器１７との間に介装さ
れたキャピラリー２８により減圧され室外熱交換器１７
へは気体状態で入り放熱して除霜を行う。When a predetermined amount or more of frost forms on the outdoor heat exchanger 17 during this heating operation, it is detected by the defrost sensor 26, and this detection signal is input to the control device 27, and at the same time, the control device 27 switches the The valve 23 is opened and the endothermic circuit 22 is communicated. In this case, the refrigerant leaving the indoor heat exchanger 15 is guided to the heat absorber 21 of the heat storage device 12 via the heat absorption circuit 22. At this time, the rotation of the indoor fan 24 is suppressed, the indoor heat exchanger 15 does not completely liquefy the refrigerant, and the refrigerant is discharged in a high-temperature gas state, and the switching valve 23 simply switches, but does not depressurize. , absorbs heat from the heat storage material 19. Furthermore, the pressure is reduced by a capillary 28 interposed between the heat absorber 21 and the outdoor heat exchanger 17.
It enters in a gaseous state and radiates heat to defrost the air.
【００１２】また、蓄熱装置１２に充填されている蓄熱
材１９であるポリエチレングリコールは通常暖房中およ
び冷房運転中は放熱器１３を流れる高温高圧ガスにより
、１００℃〜１２０℃の高温状態となり酸化劣化を起こ
し易いが、本実施例におけるポリエチレン樹脂中空成形
品のような封止材２０が蓄熱材１９の上層に配置されて
いると、長期に安定した性質が保持されることとなる。
また、多価アルコール類の酸化劣化によって生成する有
機酸類により蓄熱装置１８を構成する金属が腐食される
といったことも生じなくなる。[0012] Furthermore, polyethylene glycol, which is the heat storage material 19 filled in the heat storage device 12, is brought into a high temperature state of 100°C to 120°C by the high-temperature, high-pressure gas flowing through the radiator 13 during heating and cooling operation, and is oxidized and deteriorated. However, if the sealing material 20 such as the polyethylene resin hollow molded product in this embodiment is placed on the upper layer of the heat storage material 19, stable properties will be maintained over a long period of time. Further, the metal constituting the heat storage device 18 will not be corroded by organic acids generated by oxidative deterioration of polyhydric alcohols.
【００１３】なお、上記実施例では蓄熱材１９の封止材
２０としてポリエチレン樹脂中空成品を用いたが、本発
明は何らこれに限定されるものではなく、同じ作用をす
るものであれば同様に適用することができる。[0013] In the above embodiment, a polyethylene resin hollow product was used as the sealing material 20 of the heat storage material 19, but the present invention is not limited to this in any way. Can be applied.
【００１４】[0014]
【発明の効果】以上詳述したように本発明に係る空気調
和機にあっては、蒸発器、凝縮器、圧縮機及び蓄熱材が
充填された蓄熱装置等を備えた空気調和機において、前
記蓄熱材の上層に該蓄熱材に溶解せず、しかも該蓄熱材
よりも低密度の封止材が配設されているので前記蓄熱材
を長期間にわたって酸化劣化させることなく安定して使
用することが可能となる。また、前記蓄熱装置を構成す
る金属の酸による腐食の問題もなくすことができる。Effects of the Invention As detailed above, the air conditioner according to the present invention is equipped with an evaporator, a condenser, a compressor, a heat storage device filled with a heat storage material, etc. Since a sealing material that does not dissolve in the heat storage material and has a lower density than the heat storage material is provided on the upper layer of the heat storage material, the heat storage material can be used stably over a long period of time without oxidative deterioration. becomes possible. Furthermore, the problem of corrosion of the metal constituting the heat storage device due to acid can also be eliminated.
【図１】本発明に係るヒートポンプ式空気調和機の冷凍
サイクルの一実施例を示す回路図である。FIG. 1 is a circuit diagram showing an embodiment of a refrigeration cycle of a heat pump air conditioner according to the present invention.
【図２】本発明に係る蓄熱装置を示す概略断面図である
。FIG. 2 is a schematic cross-sectional view showing a heat storage device according to the present invention.
１１ 圧縮機 １２ 蓄熱装置 １５ 室内熱交換器（凝縮器） １７ 室外熱交換器（蒸発器） １９ 蓄熱材 ２０ 封止材 11 Compressor 12 Heat storage device 15 Indoor heat exchanger (condenser) 17 Outdoor heat exchanger (evaporator) 19 Heat storage material 20 Sealing material
Claims (1)
充填された蓄熱装置等を備えた空気調和機において、前
記蓄熱材の上層に該蓄熱材に溶解せず、しかも該蓄熱材
よりも低密度の封止材が配設されていることを特徴とす
る空気調和機。Claim 1: In an air conditioner equipped with an evaporator, a condenser, a compressor, a heat storage device filled with a heat storage material, etc., an upper layer of the heat storage material contains a material that does not dissolve in the heat storage material and is more than the heat storage material. An air conditioner characterized by being provided with a low-density sealing material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11165191A JPH04340057A (en) | 1991-05-16 | 1991-05-16 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11165191A JPH04340057A (en) | 1991-05-16 | 1991-05-16 | Air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04340057A true JPH04340057A (en) | 1992-11-26 |
Family
ID=14566733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11165191A Pending JPH04340057A (en) | 1991-05-16 | 1991-05-16 | Air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04340057A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012042687A1 (en) * | 2010-09-30 | 2012-04-05 | パナソニック株式会社 | Heat storage device and air conditioner with the heat storage device |
-
1991
- 1991-05-16 JP JP11165191A patent/JPH04340057A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012042687A1 (en) * | 2010-09-30 | 2012-04-05 | パナソニック株式会社 | Heat storage device and air conditioner with the heat storage device |
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