JPS62294856A - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JPS62294856A JPS62294856A JP11311386A JP11311386A JPS62294856A JP S62294856 A JPS62294856 A JP S62294856A JP 11311386 A JP11311386 A JP 11311386A JP 11311386 A JP11311386 A JP 11311386A JP S62294856 A JPS62294856 A JP S62294856A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- heat storage
- heat exchanger
- refrigerant
- defrosting
- 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
- 238000005338 heat storage Methods 0.000 claims description 25
- 239000003507 refrigerant Substances 0.000 claims description 23
- 238000010257 thawing Methods 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 15
- 230000008018 melting Effects 0.000 claims description 13
- 238000002844 melting Methods 0.000 claims description 12
- 239000011232 storage material Substances 0.000 claims description 12
- 239000012188 paraffin wax Substances 0.000 claims description 8
- 230000005494 condensation Effects 0.000 claims description 6
- 238000009833 condensation Methods 0.000 claims description 6
- 230000004927 fusion Effects 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 238000005057 refrigeration Methods 0.000 claims description 2
- 230000002441 reversible effect Effects 0.000 claims 1
- 239000001993 wax Substances 0.000 claims 1
- 230000007423 decrease Effects 0.000 description 4
- 230000036760 body temperature Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
３、発明の詳細な説明
（イ）産業上の利用分野
本発明は四方弁の切換操作で冷凍サイクルを可逆として
暖房運転並びに冷房（除霜）運転が行なえるようにした
空気調和機に関する。[Detailed Description of the Invention] 3. Detailed Description of the Invention (a) Industrial Application Field The present invention is capable of reversing the refrigeration cycle by switching a four-way valve to perform heating operation and cooling (defrosting) operation. Regarding air conditioners.
（ロ）従来の技術
従来、この種の空気調和機の除霜方法としては、特公昭
６１−６３０１号公報に示されたようなものが開示され
ている。この内容は室外熱交換器に付着した霜を溶かす
ために四方弁を暖房状態から冷房状態に切り換えて室外
熱交換器を凝縮器として、室内熱交換器を蒸発器として
夫々作用きせるものである。(B) Prior Art Conventionally, a defrosting method for this type of air conditioner has been disclosed in Japanese Patent Publication No. 61-6301. This involves switching the four-way valve from the heating state to the cooling state in order to melt the frost adhering to the outdoor heat exchanger, so that the outdoor heat exchanger functions as a condenser and the indoor heat exchanger functions as an evaporator.
（ハ）発明が解決しようとする問題点
このような空気調和機においては、除霜時に室内熱交換
器が蒸発器として作用するため、室内温度が低下する欠
点があった。(c) Problems to be Solved by the Invention In such an air conditioner, the indoor heat exchanger acts as an evaporator during defrosting, so there is a drawback that the indoor temperature decreases.
本発明は除霜時の室内温度の低下を低く抑えることを目
的としたものである。The object of the present invention is to suppress the decrease in indoor temperature during defrosting.
仲）問題点を解決するための手段
この目的を達成するために、本発明は暖房運転時に高圧
側となり除霜運転時に低圧側となる配管に蓄熱槽を設け
、この蓄熱槽には融点が３８〜４６°Ｃ程度で、融解潜
熱が４５〜６５ Ｋｃａｌ／ ｋｇ程度のパラフィンワ
ックスを入れて、暖房運転中に冷媒の凝縮温度がパラフ
ィンワックスの融点以下になった時に除霜を始めるよう
にしたものである。In order to achieve this object, the present invention provides a heat storage tank in the piping that becomes the high pressure side during heating operation and the low pressure side during defrosting operation, and this heat storage tank has a melting point of 38. A paraffin wax with a temperature of ~46°C and a latent heat of fusion of approximately 45 to 65 Kcal/kg is placed, and defrosting is started when the condensation temperature of the refrigerant falls below the melting point of the paraffin wax during heating operation. It is.
（ネ）作用
冷媒の凝縮温度がパラフィンワックス（蓄熱材）の融点
（３８〜４６℃）以下になった時に除霜運転を開始させ
るようにしたので、この除ｍＪ転時の低圧側の冷媒温度
がパラフィンワックスの融点以下になるおそれを少なく
して、室内熱交換器の極端な温度低下を防ぐようにして
いる。(f) Since the defrosting operation is started when the condensation temperature of the working refrigerant falls below the melting point (38 to 46 degrees Celsius) of paraffin wax (heat storage material), the temperature of the refrigerant on the low pressure side during this removal mJ rotation This reduces the possibility that the temperature will drop below the melting point of paraffin wax, thereby preventing an extreme temperature drop in the indoor heat exchanger.
（へ）実施例
第１図は本発明の空気調和機の一実施例の冷媒回路図で
、１は圧縮機、２は四方弁で、暖房運転時は実線状態に
設定され、除Ｍ（冷房）運転時は破線状態に設定される
。３は室内熱交換器、４は減圧装置、５は室外熱交換器
、６は蓄熱槽で、この槽内には室内熱交換器３と減圧装
置４とをつなぐ冷媒配管７が配設されている。又、この
蓄熱槽には下表に示すパラフィンワックスが蓄熱材８と
して収められている。(F) Embodiment Figure 1 is a refrigerant circuit diagram of an embodiment of the air conditioner of the present invention. 1 is a compressor, 2 is a four-way valve, and the solid line state is set during heating operation. ) During operation, it is set to the broken line state. 3 is an indoor heat exchanger, 4 is a pressure reducing device, 5 is an outdoor heat exchanger, and 6 is a heat storage tank. A refrigerant pipe 7 connecting the indoor heat exchanger 3 and the pressure reducing device 4 is disposed inside this tank. There is. Further, paraffin wax shown in the table below is stored as a heat storage material 8 in this heat storage tank.
名称：低融点・高ノルマル含量パラフィンワックス
“５Ｐ−０１１０”日本精！ｌ！１１（Ｉ＠融点；４３
．７°Ｃ１油分： ０．４ＷＨ％、粘度； ２．７ｃ
ｓｔ／％、平均炭素数；２２．５、炭素数分布；１８〜
１９、融解熱４０〜４８Ｋｃａｌ／ｋｇ９は室内熱交換
器３と蓄熱槽６とをつなぐ配管１０に取り付けられた第
１温度センサで、暖房運転時にこの配管１０内を流れる
冷媒を検知している。そしてこの冷媒の温度が４３°Ｃ
（蓄熱材の融点）以下となった時には室外熱交換器５に
霜が付着してこの室外熱交換器５から十分に熱が汲み上
げられないと判断して、除霜運転にはいる。すなわち制
御装置１１からの信号で四方弁２を破線状態に切換える
ようになっている。１２は室外熱交換器５に取り付けら
れた第２温度センサで、この室外熱交換器５の温度を検
知している。そして、前述の配管１０内を流れる冷媒の
温度が４３°Ｃ以上でも、この室外熱交換器の温度が一
１５°Ｃ以下の時には除霜運転にはいるようになってい
る。Name: Low melting point, high normal content paraffin wax “5P-0110” Nippon Sei! l! 11 (I@melting point; 43
．． 7°C1 oil content: 0.4WH%, viscosity: 2.7c
st/%, average carbon number; 22.5, carbon number distribution; 18~
19. Heat of fusion 40-48 Kcal/kg 9 is a first temperature sensor attached to the pipe 10 connecting the indoor heat exchanger 3 and the heat storage tank 6, and detects the refrigerant flowing in the pipe 10 during heating operation. And the temperature of this refrigerant is 43°C
(The melting point of the heat storage material) or lower, it is determined that frost has adhered to the outdoor heat exchanger 5 and sufficient heat cannot be pumped from the outdoor heat exchanger 5, and a defrosting operation is started. That is, the four-way valve 2 is switched to the broken line state by a signal from the control device 11. A second temperature sensor 12 is attached to the outdoor heat exchanger 5 and detects the temperature of the outdoor heat exchanger 5. Even if the temperature of the refrigerant flowing through the pipe 10 is 43°C or higher, the defrosting operation is started when the temperature of the outdoor heat exchanger is 115°C or lower.
このような構成を’Ｊｉｉえた空気調和機において、暖
房運転時は四方弁２を実線状態に設定して圧縮機１から
吐出きれた冷媒を実線矢印のように流す。そして室内熱
交換器３を凝縮器として作用させ室内を暖房する。この
時、蓄熱槽６内の冷媒管７内で凝縮液化した際に冷媒が
放出した凝縮熱は蓄熱槽６内の蓄熱材８を加熱してこれ
を融解する。従って蓄熱材８は４０〜４８ Ｋｃａｌ／
ｋｇの融解潜熱を保有して蓄熱されている。このよう
に暖房運転時は、室内熱交換器３で室内を暖房すると同
時に、蓄熱槽６に蓄熱を行なう。In an air conditioner having such a configuration, during heating operation, the four-way valve 2 is set to the solid line state, and the refrigerant completely discharged from the compressor 1 flows as shown by the solid line arrow. The indoor heat exchanger 3 then acts as a condenser to heat the room. At this time, the heat of condensation released by the refrigerant when condensed and liquefied in the refrigerant pipe 7 in the heat storage tank 6 heats the heat storage material 8 in the heat storage tank 6 and melts it. Therefore, the heat storage material 8 is 40 to 48 Kcal/
It has a latent heat of fusion of kg and is stored as heat. In this way, during the heating operation, the indoor heat exchanger 3 heats the room, and at the same time heat is stored in the heat storage tank 6.
この暖房運転中に、第１温度センサ９で室内熱交換器３
から流れ出た冷媒の温度を検知して、この温度が４３℃
以下となった時には、外気温の低下によって室外熱交換
器５に霜が付着してこの室外熱交換器５での熱の汲み上
げ量が減少したものと判断して、除霜運転を行なう。During this heating operation, the indoor heat exchanger 3 is
The temperature of the refrigerant flowing out was detected and was found to be 43℃.
When the temperature is below, it is determined that frost has adhered to the outdoor heat exchanger 5 due to a drop in the outside temperature and the amount of heat pumped by the outdoor heat exchanger 5 has decreased, and a defrosting operation is performed.
この除霜運転時は、制御装置１１からの信号で四方弁２
を破線状態に切り換え、圧縮機１を運転させ、冷媒を破
線矢印のように流す。すなわち、蓄熱槽６内に流れ込ん
だ冷媒は蓄熱材８の熱で加熱され室内熱交換器３に送り
込まれる。この時蓄 。During this defrosting operation, the four-way valve 2 is
is switched to the state shown by the broken line, the compressor 1 is operated, and the refrigerant flows as shown by the broken line arrow. That is, the refrigerant flowing into the heat storage tank 6 is heated by the heat of the heat storage material 8 and sent to the indoor heat exchanger 3. Save money at this time.
熱材８は融点（４３℃）以上となっているため、室内熱
交換器３に送り込まれる冷媒の温度は、人間の体温より
も低くなるおそれは少ない。このため室内熱交換器３の
温度も極端に低くなるおそれが少なく室内温度の低下を
小さく抑えることができる。そしてこの除霜運転開始か
ら一定時間（約２０分）経過後に配管１０内を流れる冷
媒の温度を第１温度センサ９で検知して、この温度が４
３°Ｃ以上になった時には前述の暖房運転に戻る。Since the heat material 8 has a melting point (43° C.) or higher, the temperature of the refrigerant fed into the indoor heat exchanger 3 is unlikely to become lower than human body temperature. Therefore, there is no possibility that the temperature of the indoor heat exchanger 3 will become extremely low, and a decrease in the indoor temperature can be suppressed to a small level. Then, after a certain period of time (approximately 20 minutes) has passed since the start of this defrosting operation, the temperature of the refrigerant flowing inside the pipe 10 is detected by the first temperature sensor 9, and this temperature is
When the temperature exceeds 3°C, the heating operation described above is returned.
尚、冷房運転時の冷媒の流れは除霜運転時の流れと同一
であるので、その説明は省略した。Note that the flow of the refrigerant during the cooling operation is the same as the flow during the defrosting operation, so a description thereof will be omitted.
前述の蓄熱槽６は第２図に示すように、四方弁２と室内
熱交換器３との間に配設したり第３図に示すように室内
熱交換器３と並列に配設しても良い。The aforementioned heat storage tank 6 may be disposed between the four-way valve 2 and the indoor heat exchanger 3 as shown in FIG. 2, or in parallel with the indoor heat exchanger 3 as shown in FIG. Also good.
（ト）発明の効果
以上述べたように、本発明は除霜時の冷媒を加熱する蓄
熱材として融点が３８〜４６°Ｃ程度で融解潜熱が４５
〜６５ Ｋｃａｌ／ ｋｇのパラフィンワックスを使用
し、暖房運転中の冷媒の凝縮温度が、この蓄熱材の融点
以下となった時に除霜運転を開始するようにしたもので
ある。すなわち、蓄熱材の融点と除霜運転開始の冷媒の
凝縮温度とを人間の体温よりも高い温度（３８〜４６°
Ｃ）で略一致させたので、除霜時の室内熱交換器の温度
が人間の体温よりも低くなるおそれは少なく室内温度の
低下を低く抑えることができる。(g) Effects of the invention As described above, the present invention is a heat storage material that heats a refrigerant during defrosting, and has a melting point of about 38 to 46°C and a latent heat of fusion of 45°C.
~65 Kcal/kg of paraffin wax is used, and defrosting operation is started when the condensation temperature of the refrigerant during heating operation becomes below the melting point of this heat storage material. That is, the melting point of the heat storage material and the condensation temperature of the refrigerant at the start of defrosting operation are set to a temperature higher than human body temperature (38 to 46 degrees).
Since they are made substantially equal to each other in C), there is little possibility that the temperature of the indoor heat exchanger during defrosting will become lower than the human body temperature, and the decrease in indoor temperature can be suppressed to a low level.
又、室内熱交換器の温度の低下が低く抑えられるので、
暖房復帰時の室内熱交換器の温度上昇が早く室内温度を
短時間で設定温度に上げることができる。In addition, the drop in temperature of the indoor heat exchanger is kept low, so
The temperature of the indoor heat exchanger rises quickly when heating is restored, and the indoor temperature can be raised to the set temperature in a short time.
第１図は本発明の空気調和機の一実施例を示す冷媒回路
図、第２図、第３図は夫々本発明の異なる実施例を示す
冷媒回路図である。
２・・・四方弁、 ６・・・蓄熱槽、 ８・・・蓄熱
材、１１・・・制御装置。
出願人 三洋電機株式会社外１名
代理人 弁理士 西野卓嗣 外１名
第１図
第２１！Ｉ
第３ＷＪFIG. 1 is a refrigerant circuit diagram showing one embodiment of an air conditioner according to the present invention, and FIGS. 2 and 3 are refrigerant circuit diagrams showing different embodiments of the present invention. 2... Four-way valve, 6... Heat storage tank, 8... Heat storage material, 11... Control device. Applicant Sanyo Electric Co., Ltd. and one other agent Patent attorney Takuji Nishino and one other person Figure 1 Figure 21! I 3rd WJ
Claims (1)
暖房運転並びに除霜（冷房）運転を可能とした空気調和
機において、暖房運転時に高圧側となり除霜運転時に低
圧側となる配管に蓄熱槽を付設すると共に、この蓄熱槽
に収容する蓄熱材として融点が３８〜４６℃程度で、融
解潜熱が４５〜６５Ｋｃａｌ／ｋｇ程度のパラフィンワ
ックスを使用し、且つ暖房運転時に冷媒の凝縮温度が前
記蓄熱材の融点以下になった時に四方弁を切り換えて除
霜運転を行なわせる装置を備えたことを特徴とする空気
調和機。(1) The refrigeration cycle is made reversible by switching the four-way valve,
In an air conditioner capable of heating operation and defrosting (cooling) operation, a heat storage tank is attached to the piping that becomes the high pressure side during heating operation and the low pressure side during defrosting operation, and as a heat storage material stored in this heat storage tank. Paraffin wax with a melting point of about 38 to 46°C and a latent heat of fusion of about 45 to 65 Kcal/kg is used, and when the condensation temperature of the refrigerant becomes below the melting point of the heat storage material during heating operation, the four-way valve is switched to remove the wax. An air conditioner characterized by being equipped with a device for performing frost operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11311386A JPH0652142B2 (en) | 1986-05-16 | 1986-05-16 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11311386A JPH0652142B2 (en) | 1986-05-16 | 1986-05-16 | Air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62294856A true JPS62294856A (en) | 1987-12-22 |
| JPH0652142B2 JPH0652142B2 (en) | 1994-07-06 |
Family
ID=14603837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11311386A Expired - Lifetime JPH0652142B2 (en) | 1986-05-16 | 1986-05-16 | Air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0652142B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019519748A (en) * | 2016-06-23 | 2019-07-11 | サンアンプ リミテッド | Phase change material based enhancement for reverse cycle defrosting in a vapor compression refrigeration system |
| US11175082B2 (en) | 2017-04-27 | 2021-11-16 | Mitsubishi Electric Corporation | Refrigeration cycle apparatus with heat storage for use during defrost |
-
1986
- 1986-05-16 JP JP11311386A patent/JPH0652142B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019519748A (en) * | 2016-06-23 | 2019-07-11 | サンアンプ リミテッド | Phase change material based enhancement for reverse cycle defrosting in a vapor compression refrigeration system |
| US11193702B2 (en) | 2016-06-23 | 2021-12-07 | Sunamp Limited | Phase change material-based enhancement for reversed-cycle defrosting in vapour compression refrigeration systems |
| US11175082B2 (en) | 2017-04-27 | 2021-11-16 | Mitsubishi Electric Corporation | Refrigeration cycle apparatus with heat storage for use during defrost |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0652142B2 (en) | 1994-07-06 |
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