JPS62196565A - Defroster for air conditioner - Google Patents
Defroster for air conditionerInfo
- Publication number
- JPS62196565A JPS62196565A JP3991886A JP3991886A JPS62196565A JP S62196565 A JPS62196565 A JP S62196565A JP 3991886 A JP3991886 A JP 3991886A JP 3991886 A JP3991886 A JP 3991886A JP S62196565 A JPS62196565 A JP S62196565A
- Authority
- JP
- Japan
- Prior art keywords
- blower
- heat exchanger
- defrosting
- temperature
- control circuit
- 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
- 238000010257 thawing Methods 0.000 claims description 27
- 238000001514 detection method Methods 0.000 claims description 8
- 238000005057 refrigeration Methods 0.000 claims description 8
- 239000003638 chemical reducing agent Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000003507 refrigerant Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009423 ventilation 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】
産業上の利用分野
本発明は、ヒートポンプ式空気調和機における暖房運転
時の除霜装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a defrosting device during heating operation in a heat pump type air conditioner.
従来の技術
ｌ −７
従来この種の空気調和機の冷凍システムは、第４図に示
す様に、暖房運転時は、圧縮機１から吐出された冷媒が
、実線矢印のように四方弁２を通り、室内側熱交換器３
で凝縮され、キャピラリーチューブ４を通り、室外側熱
交換器６で蒸発し、再び四方弁２を通り圧縮機１に戻る
。BACKGROUND TECHNOLOGY l-7 As shown in FIG. 4, in the conventional refrigeration system of this type of air conditioner, during heating operation, the refrigerant discharged from the compressor 1 passes through the four-way valve 2 as shown by the solid arrow. Street, indoor heat exchanger 3
It passes through the capillary tube 4, evaporates in the outdoor heat exchanger 6, and returns to the compressor 1 through the four-way valve 2 again.
そして、低熱・気温時には、室外側熱交換器６の蒸発温
度が低くなり、やがて室外側熱交換器５の表面には霜が
付着し始め、そのため室外側熱交換器６の通風抵抗が増
大し、熱交換能力が急激に減少し始め、それにつれて暖
房能力も低下する。When the heat and temperature are low, the evaporation temperature of the outdoor heat exchanger 6 becomes low, and eventually frost begins to adhere to the surface of the outdoor heat exchanger 5, which increases the ventilation resistance of the outdoor heat exchanger 6. , the heat exchange capacity begins to decrease rapidly, and the heating capacity also decreases accordingly.
このため、室外側熱交換器５の配管温度を検出する温度
検出装置６で検出し、また、除霜周期用タイマー７によ
って一定時間毎にその温度が、ある一定の温度以下にな
ったならば、図中の破線に示すように四方弁２を切替え
て、冷房運転とし、室外側熱交換器６に高温高圧の冷媒
を送り、室外側熱交換器５に付着した霜を融解させ、室
外側熱交換器５の能力を回復させ、再び図中の実線に示
す暖房運転にするものである。Therefore, if the temperature of the pipes of the outdoor heat exchanger 5 is detected by the temperature detection device 6, and if the temperature falls below a certain temperature at regular intervals by the defrosting cycle timer 7, , the four-way valve 2 is switched to the cooling mode as shown by the broken line in the figure, and high-temperature, high-pressure refrigerant is sent to the outdoor heat exchanger 6 to melt the frost adhering to the outdoor heat exchanger 5. The capacity of the heat exchanger 5 is restored and the heating operation is resumed as shown by the solid line in the figure.
３ベー／
発明が解決しようとする問題点
しかしながら、このような従来の除霜運転モードにおい
ては、暖房運転が中断され、室内外のファンモータを停
止させるため、除霜に必要な充分の熱量が得られなく、
長時間の除霜運転が必要となり、その間、本来外気温が
低いため、室温の低下は非常に大きく、体感上、非常に
大きな問題であった。3Ba/ Problems to be Solved by the Invention However, in such a conventional defrosting operation mode, the heating operation is interrupted and the indoor and outdoor fan motors are stopped, so that sufficient heat required for defrosting is not available. Not getting it,
A long defrosting operation is required, and during this time the outside temperature is naturally low, so the drop in room temperature is very large, which is a very big problem in terms of experience.
本発明は、上記従来の欠点を改善するもので、除霜運転
時間を短縮し、低外気温時の快適性の向上をはかるもの
である。The present invention aims to improve the above-mentioned conventional drawbacks by shortening the defrosting operation time and improving comfort at low outside temperatures.
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、圧縮機、四方弁、
室内側熱交換器、減圧器、室外側熱交換器を連接してな
る冷凍システムと、前記室内側熱交換器に送風を行なう
送風機と、前記送風機の間欠運転を行ガう送風機制御回
路と、前記室外側送風機の温度を検出し、前記送風機制
御回路を動作させる温度検出装置と、この温度検出装置
による送風機制御回路の動作時間を制御するタイマーと
よりなシ、この送風機制御回路の動作によシ送風機を間
欠運転し、終了後に前記四方弁を切替えるという構成を
備えたものである。Means for Solving the Problems To achieve this objective, the present invention provides a compressor, a four-way valve,
a refrigeration system that connects an indoor heat exchanger, a pressure reducer, and an outdoor heat exchanger; a blower that blows air to the indoor heat exchanger; and a blower control circuit that operates the blower intermittently; A temperature detection device that detects the temperature of the outdoor side blower and operates the blower control circuit, and a timer that controls the operating time of the blower control circuit by the temperature detection device, and a timer that controls the operation time of the blower control circuit. The air blower is operated intermittently, and the four-way valve is switched after the blower is operated intermittently.
作 用
本発明は、上記した構成によって、除霜運転前の予備運
転として、室内機の送風機を間欠運転することにより圧
縮機からの吐出冷媒圧力、温度を上昇させ、逆サイクル
での除霜開始時の室外側熱交換器へ流入する冷媒圧力、
温度を従来より高くすることくより、除霜時間が短縮さ
れることとなる０
実施例
以下、本発明の一実施例を第１図〜第３図を参考に説明
する。尚、従来と同一構成については同符号を付し、そ
の詳細な説明を省略する。According to the above-described configuration, the present invention increases the pressure and temperature of the refrigerant discharged from the compressor by intermittently operating the blower of the indoor unit as a preliminary operation before the defrosting operation, and starts defrosting in the reverse cycle. The refrigerant pressure flowing into the outdoor heat exchanger at
The defrosting time is shortened by increasing the temperature higher than before.Example An example of the present invention will be described below with reference to FIGS. 1 to 3. In addition, the same reference numerals are attached to the same configurations as in the prior art, and detailed explanation thereof will be omitted.
８は、室内側熱交換器に送風し、室内を冷房・暖房を行
なう送風機である。９は、送風機の間欠運転時間を制御
する間欠運転制御タイマ、１０は、送風機間欠運転を行
なう送風機制御回路である。8 is a blower that blows air to the indoor heat exchanger to cool and heat the room. 9 is an intermittent operation control timer that controls the intermittent operation time of the blower, and 10 is a blower control circuit that performs intermittent operation of the blower.
つぎに上記構成の動作について説明する。Next, the operation of the above configuration will be explained.
６ページ
タイマ７に暖房信号が入り、暖房運転時間を積算し、所
定の時間（例えば６０分）、経過すると、一定時間（例
えば２２分）ＯＮ信号を出力する。A heating signal is input to the 6-page timer 7, the heating operation time is integrated, and when a predetermined time (for example, 60 minutes) has elapsed, an ON signal is output for a certain period of time (for example, 22 minutes).
また、これと同時に温度検出装置６が室外熱交換器６の
温度を検出し、所定温度以下となると、同様にＯＮ信号
を出力する。この２つの出力は、ＡＮＤ回路１１により
、双方がＯＮとなったときＯＮ出力となる。このＯＮ出
力により、間欠運転制御タイマ９が、ＯＮ信号を出力し
、同時に間欠運転時間を積算する。このＯＮ信号が、送
風機制御回路１ｏに入力され送風機８が間欠運転を行な
う。一定時間経過し、間欠運転制御タイマ９の出力がＯ
ＦＦとなシ、送風機制御回路１ｏによシ送風機は停止す
る。これと同時に、このＯＦＦ信号はインバータ１２を
通じ、又ＡＮＤ回路１１からのＯＮ信号が、ＡＮＤ回路
１３の論理和によってＯＮと々す、冷房信号との論理和
によって、ＡＮＤ回路１４により、四方弁２が、切り替
り、除霜運転が開始される。At the same time, the temperature detection device 6 detects the temperature of the outdoor heat exchanger 6, and when the temperature falls below a predetermined temperature, similarly outputs an ON signal. These two outputs are turned on by the AND circuit 11 when both are turned on. In response to this ON output, the intermittent operation control timer 9 outputs an ON signal and at the same time integrates the intermittent operation time. This ON signal is input to the blower control circuit 1o, and the blower 8 performs intermittent operation. After a certain period of time has elapsed, the output of the intermittent operation control timer 9 becomes O.
When the FF is turned on, the blower is stopped by the blower control circuit 1o. At the same time, this OFF signal is passed through the inverter 12, and the ON signal from the AND circuit 11 is turned ON by the logical sum of the AND circuit 13. is switched and defrosting operation is started.
除霜が進行し、室外側熱交換器５の温度が上昇６ ベー
／′
し、所定の温度以上になると、温度検出装置６が検知し
、出力をＯＦＦとする。これにより、四方弁２が切替り
、暖房運転を再開すると共に、送風機８が運転を始める
。As defrosting progresses, the temperature of the outdoor heat exchanger 5 increases by 6 b/' and when it reaches a predetermined temperature or higher, the temperature detection device 6 detects this and turns off the output. As a result, the four-way valve 2 is switched to resume heating operation, and the blower 8 starts operating.
送風機８が、間欠運転を開始すると、圧縮機１の吐出圧
力は、上昇、下降をくり返し、また吐出温度もこれにつ
れて、除々に上昇する（第３図参照）。この結果、圧縮
機１、室内側熱交換器３等は蓄熱し、除霜開始直前の冷
凍システム内熱量は増加する。When the blower 8 starts intermittent operation, the discharge pressure of the compressor 1 repeatedly rises and falls, and the discharge temperature also gradually rises accordingly (see FIG. 3). As a result, the compressor 1, the indoor heat exchanger 3, etc. accumulate heat, and the amount of heat in the refrigeration system immediately before the start of defrosting increases.
したがって、除霜運転中に除霜に使用される熱量が増加
するため、除霜時間が短縮される。Therefore, since the amount of heat used for defrosting increases during the defrosting operation, the defrosting time is shortened.
発明の効果
上記実施例より明らかなように、本発明における空気調
和機の除霜装置は、除霜運転のため四方弁を切替える前
に、一定時間、室内側の送風機の間欠運転を行なうので
、間欠運転により、圧縮機の吐出温度、圧力が上昇し圧
縮機、室内側熱交換器等に蓄熱が行なわれるので、除霜
運転時、除霜に使用できる冷凍システム内の熱量が増加
してい７ペー／゛
るため、除霜時間が短縮される。Effects of the Invention As is clear from the above embodiments, the defrosting device for an air conditioner according to the present invention operates the indoor blower intermittently for a certain period of time before switching the four-way valve for defrosting operation. Due to intermittent operation, the discharge temperature and pressure of the compressor rise and heat is stored in the compressor, indoor heat exchanger, etc., so during defrosting operation, the amount of heat in the refrigeration system that can be used for defrosting increases. The defrosting time is shortened due to the page speed.
しだがって、除霜運転による暖房運転の中断時間が短縮
され、除霜運転中の室温降下が小さくなり、快適性の向
上の上で多大の効果を有するものである。Therefore, the interruption time of heating operation due to defrosting operation is shortened, and the drop in room temperature during defrosting operation is reduced, which has a great effect on improving comfort.
尚、四方弁の切替えを行なわずに、冷凍システムによる
除霜を行なう空気調和機の除霜装置においても、本発明
と同様に、除霜運転前に室内側の送風機を間欠運転する
ことにより同様の効果が得られる。In addition, even in the defrosting device of an air conditioner that defrosts using the refrigeration system without switching the four-way valve, the same effect can be achieved by intermittent operation of the blower on the indoor side before the defrosting operation, as in the present invention. The effect of this can be obtained.
第１図は本発明の一実施例である空気調和機の冷凍サイ
クル図、第２図は同除霜制御装置の概略電気回路図、第
３図は第２図の動作のタイミングチャート及び圧縮機吐
出圧力、温度を示す線図、第４図は従来の冷凍システム
図である。
１・・・・・・圧縮機、２・・・・・・四方弁、３・・
・・・・室内側熱交換器、４・・・・・・キャピラリチ
ューブ、５・・・・・・室外側熱交換器、６・・・・・
・温度検出装置、８・・・・・・送風機、９・・・・・
・タイマ、１０・・・・・・送風機制御回路。
７−−−圧縮孤
２− 四方弁
３・−釣刷］熱女挾呑
ＩＯ−一一え２１月ｔ↓１づ陶ら旬５リイ１］ド回に第
３図Fig. 1 is a refrigeration cycle diagram of an air conditioner that is an embodiment of the present invention, Fig. 2 is a schematic electrical circuit diagram of the defrosting control device, and Fig. 3 is a timing chart of the operation of Fig. 2 and the compressor. A diagram showing discharge pressure and temperature, FIG. 4 is a diagram of a conventional refrigeration system. 1... Compressor, 2... Four-way valve, 3...
...Indoor heat exchanger, 4...Capillary tube, 5...Outdoor heat exchanger, 6...
・Temperature detection device, 8...Blower, 9...
・Timer, 10...Blower control circuit. 7--Compression arc 2-4-way valve 3--Tsurishi] heat woman cupping IO-11e 21 month t ↓ 1 zu pottery season 5 ri 1] de time Figure 3
Claims (1)
換器を環状に連接して構成したヒートポンプ式冷凍サイ
クルと、前記室内側熱交換器に送風する送風機と、前記
送風機の間欠運転を行なう送風機制御回路と、前記室外
側熱交換器の温度を検出し、前記送風機制御回路を動作
させる温度検出装置と、この温度検出装置による送風機
制御回路の動作時間を制御するタイマとよりなり、この
送風機制御回路の動作終了後に前記四方弁を切替えて除
霜を行なうことを特徴とする空気調和機の除霜装置。A heat pump refrigeration cycle configured by connecting a compressor, a four-way valve, an indoor heat exchanger, a pressure reducer, and an outdoor heat exchanger in an annular manner, a blower that blows air to the indoor heat exchanger, and an intermittent flow of the blower. It consists of a blower control circuit that operates, a temperature detection device that detects the temperature of the outdoor heat exchanger and operates the blower control circuit, and a timer that controls the operating time of the blower control circuit by the temperature detection device. A defrosting device for an air conditioner, characterized in that defrosting is performed by switching the four-way valve after the operation of the blower control circuit is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3991886A JPS62196565A (en) | 1986-02-25 | 1986-02-25 | Defroster for air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3991886A JPS62196565A (en) | 1986-02-25 | 1986-02-25 | Defroster for air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62196565A true JPS62196565A (en) | 1987-08-29 |
Family
ID=12566318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3991886A Pending JPS62196565A (en) | 1986-02-25 | 1986-02-25 | Defroster for air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62196565A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS565954B1 (en) * | 1971-06-01 | 1981-02-07 |
-
1986
- 1986-02-25 JP JP3991886A patent/JPS62196565A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS565954B1 (en) * | 1971-06-01 | 1981-02-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS62196565A (en) | Defroster for air conditioner | |
| JPS6122161A (en) | Air conditioner | |
| JPH10205935A (en) | Defrosting controller and air conditioner employing the same | |
| JPS59185927A (en) | Defrostation controller | |
| JP3433600B2 (en) | Air conditioner | |
| JPH04356647A (en) | Control device for air conditioner | |
| JPS613937A (en) | Defrosting control device | |
| JPS5895138A (en) | Heat pump type air conditioner | |
| JPH1038422A (en) | Air conditioner | |
| JPS6166037A (en) | Defrosting control unit of air conditioner | |
| JPH0532659B2 (en) | ||
| JPS5946438A (en) | Defrosting operation control device for air conditioner | |
| JPS62125244A (en) | Air conditioner | |
| JP3443442B2 (en) | Air conditioner | |
| JPS62200146A (en) | Defroster for air conditioner | |
| JPS63231131A (en) | Heat pump type air-conditioning machine | |
| JPS58214759A (en) | Heat pump type hot-water supply device | |
| JPH01121645A (en) | Defrosting control device for air conditioner | |
| KR100211602B1 (en) | Defrosting time control method of airconditioner | |
| JPH0799298B2 (en) | Defrosting method for heat pump type air conditioner | |
| JPH01306786A (en) | Control of defrosting in heat pump type air-conditioner | |
| JPS6191439A (en) | Defrosting control system of heat pump type air conditioner | |
| JPS63129257A (en) | Heat pump type air conditioner | |
| JPH0233106Y2 (en) | ||
| JPH0426833Y2 (en) |