JPS6317369A - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JPS6317369A JPS6317369A JP16004786A JP16004786A JPS6317369A JP S6317369 A JPS6317369 A JP S6317369A JP 16004786 A JP16004786 A JP 16004786A JP 16004786 A JP16004786 A JP 16004786A JP S6317369 A JPS6317369 A JP S6317369A
- Authority
- JP
- Japan
- Prior art keywords
- heat exchanger
- outdoor heat
- compressor
- temperature
- bypass
- 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
- 239000007788 liquid Substances 0.000 claims description 6
- 238000005057 refrigeration Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 description 10
- 239000003507 refrigerant Substances 0.000 description 8
- 238000007796 conventional method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010257 thawing Methods 0.000 description 2
- 235000003560 Valerianella locusta Nutrition 0.000 description 1
- 240000004668 Valerianella locusta Species 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000003296 saliva Anatomy 0.000 description 1
Landscapes
- Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (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
本発明は空気調和機の冷媒制御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 refrigerant control device for an air conditioner.
従来の技術
従来ヒートポンプ式空気調和機の冷媒制御装置は第３図
に示すような冷媒回路となっている。すなわち、室外機
６８における圧縮機５ｏから冷暖房を切替える四方弁５
１，１回路よりなる室外熱交換５５２．パルス信号によ
って冷媒の絞り量を変化させる電動膨張弁５３．さらに
室内機５９０室内熱交換器５４．室外機６９の四方弁６
１．アキュームレータ６６を介して圧縮機５ｏに戻る回
路と、前記圧縮機６ｏの吐出管と前記室外熱交換器６２
の液側とを結ぶバイパス用電磁二方弁５６と、そのバイ
パス量を減らすバイパス用キャピラリチューブ５７より
構成されている。そして、前記室外熱交換器５２のガス
側温度を感知するコイル温度サーミスタ６０が管壁に取
付けられている。2. Description of the Related Art A conventional refrigerant control device for a heat pump type air conditioner has a refrigerant circuit as shown in FIG. That is, the four-way valve 5 that switches between air conditioning and heating from the compressor 5o in the outdoor unit 68
Outdoor heat exchanger 552 consisting of 1,1 circuit. Electric expansion valve 53 that changes the amount of refrigerant throttling based on a pulse signal. Furthermore, an indoor unit 590 and an indoor heat exchanger 54. Four-way valve 6 of outdoor unit 69
1. A circuit that returns to the compressor 5o via the accumulator 66, a discharge pipe of the compressor 6o, and the outdoor heat exchanger 62.
It is composed of a bypass electromagnetic two-way valve 56 that connects the liquid side to the liquid side, and a bypass capillary tube 57 that reduces the amount of bypass. A coil temperature thermistor 60 for sensing the gas side temperature of the outdoor heat exchanger 52 is attached to the tube wall.
このような冷凍サイクルにおいて、暖房運転時前記室外
熱交換器５２に着霜し、ガス側の温度がある温度以下に
なるとその温度をコイル温度サーミスタので感知し、あ
る温度以下になった時間が、一定時間を越えると、前記
コイル温度サーミスタ６０によって前記バイパス用電磁
二方弁６６が開き、吐出管より高温高圧ガスがバイパス
用キャピラリチューブ６７を通って室外熱交換器６２を
流れ、高温冷媒によって室外熱交換器５２についた霜を
溶かし、また同時に電動膨張弁６３を大きく開けて、減
圧量を減らし、低圧側圧力を上げ圧縮機の保護も行うも
のであった。In such a refrigeration cycle, when frost forms on the outdoor heat exchanger 52 during heating operation and the temperature on the gas side falls below a certain temperature, the temperature is detected by the coil temperature thermistor, and the time when the temperature falls below a certain temperature is determined. When a certain period of time is exceeded, the coil temperature thermistor 60 opens the bypass electromagnetic two-way valve 66, and high-temperature, high-pressure gas flows from the discharge pipe through the bypass capillary tube 67 and through the outdoor heat exchanger 62, and the high-temperature refrigerant causes it to flow outside. This melted the frost on the heat exchanger 52, and at the same time opened the electric expansion valve 63 wide to reduce the amount of pressure reduction, increase the low pressure side pressure, and protect the compressor.
発明が解決しようとする問題点
このような従来の構成では、室外熱交換器６２の着霜し
ていない部分、つまり風下側の回路などにも高温高圧ガ
スが流れるため、デフロスト時間が長くなり、またバイ
パス量や増やさなければならないため、室内熱交換器６
４に流れる冷媒量が減り、デフロスト中の暖房能力が減
るという問題点があった。Problems to be Solved by the Invention In such a conventional configuration, high-temperature, high-pressure gas also flows through the non-frosted portions of the outdoor heat exchanger 62, that is, the leeward side circuits, so the defrosting time becomes longer. In addition, since the amount of bypass must be increased, the indoor heat exchanger 6
There was a problem in that the amount of refrigerant flowing through the defrost was reduced, and the heating capacity during defrost was reduced.
またバイパスされた高温高圧ガスが室外熱交換器５４で
凝縮されて高圧液となって、アキュームレータ５５に入
るため、圧縮機６０で液圧縮する率が高く圧縮機６０の
耐久性が劣化するという問題も有していた。In addition, since the bypassed high-temperature and high-pressure gas is condensed in the outdoor heat exchanger 54 to become a high-pressure liquid and enters the accumulator 55, the compressor 60 has a high rate of liquid compression, which deteriorates the durability of the compressor 60. It also had
本発明は、こうした問題点を解決するもので、良好なデ
フロスト運転とデフロスト中の圧縮機の保護を行なうこ
とのできる空気調和機を提供することを目的とする。The present invention solves these problems and aims to provide an air conditioner that can perform good defrost operation and protect the compressor during defrost.
問題点を解決するための手段
この問題点を解決するために本発明は圧縮機、室外熱交
換器、膨張機構、室内熱交換器を順次連設してなる冷凍
サイクルを備え、前記室外熱交換器を互に並列接続した
風上側の第１熱交換器と、風下側の第２熱交換器に分割
し、前記第１熱交換器の法制と圧縮機の吐出管の間に第
１熱交換器の温度を検出するコイル温度センサーによっ
て開閉する電磁二方弁とバイパス用キャピラリチューブ
をもつバイパス管を接続したものである。Means for Solving the Problem In order to solve this problem, the present invention includes a refrigeration cycle in which a compressor, an outdoor heat exchanger, an expansion mechanism, and an indoor heat exchanger are successively connected, and the outdoor heat exchanger The first heat exchanger is divided into a first heat exchanger on the windward side and a second heat exchanger on the leeward side, which are connected in parallel to each other, and the first heat exchanger is connected between the first heat exchanger and the discharge pipe of the compressor. A two-way electromagnetic valve that is opened and closed by a coil temperature sensor that detects the temperature of the vessel is connected to a bypass pipe with a bypass capillary tube.
作 用
この構成により、暖房時デフロスト運転に入ると、着霜
の大きい第１熱交換器の温度をコイル温度センサーによ
って検出し、電磁二方弁を開にしてバイパス管のキャピ
ラリチューブを経て前記第１熱交換器のみに吐出管から
の高温高圧の冷媒を送シデフロストを行なうこととなる
。With this configuration, when defrost operation is started during heating, the coil temperature sensor detects the temperature of the first heat exchanger where frost formation is large, and the electromagnetic two-way valve is opened to cool the first heat exchanger through the capillary tube of the bypass pipe. Defrosting is performed by sending high-temperature, high-pressure refrigerant from the discharge pipe to only one heat exchanger.
実施例
以下本発明による一実施例を第１図および第２図にもと
づき説明する。図において、１１は室外機、１２は室内
機である。冷凍サイクルは室外機１１の圧縮機１から四
方弁２．室外熱交換器３゜膨張機構となる電動膨張弁６
．室内機１２における室内熱交換器６．室外機１１にも
とづいて四方弁２．アキュームレータ７を経て圧縮機１
に戻る回路となっている。前記室外熱交換器３は互に並
列接続され、かつ風上側の第１室外熱交換器３ａと風下
側の第２室外熱交換器３ｂに分割されている。そして圧
縮機１の吐出管と、前記風上側の第１室外熱交換器３ａ
の法制聞に、電磁二方弁８とバイパス用キャピラリチュ
ーブ９をもつバイパス管１３を接続している。そして前
記電磁二方弁８は、第１室外熱交換器３ａのガス側に設
けたコイル温度センサー１０によって制御されるように
している。図中の１７はファンを示す。EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 and 2. In the figure, 11 is an outdoor unit, and 12 is an indoor unit. The refrigeration cycle runs from the compressor 1 of the outdoor unit 11 to the four-way valve 2. Outdoor heat exchanger 3° Electric expansion valve 6 serving as an expansion mechanism
．． Indoor heat exchanger in indoor unit 126. Four-way valve based on outdoor unit 112. Compressor 1 via accumulator 7
This is the circuit that returns to. The outdoor heat exchangers 3 are connected in parallel and are divided into a first outdoor heat exchanger 3a on the windward side and a second outdoor heat exchanger 3b on the leeward side. and the discharge pipe of the compressor 1 and the first outdoor heat exchanger 3a on the windward side.
A bypass pipe 13 having an electromagnetic two-way valve 8 and a bypass capillary tube 9 is connected to the control pipe. The electromagnetic two-way valve 8 is controlled by a coil temperature sensor 10 provided on the gas side of the first outdoor heat exchanger 3a. 17 in the figure indicates a fan.
上記構成において、暖房運転時、風上側となる方の第１
室外熱交換器３ａに着霜しはじめ、コイル温度が低下し
、ある温度以下になるとコイル温度サーミスタ１ｏがこ
の温度を感知し、ある温度以下になって、一定時間がす
ぎると、前記コイル温度サーミスタ１０によって前記電
磁二方弁８が開き、吐出管より高温高圧ガスがキャピラ
リチューブ９とバイパス管１３を通って風上側に位置す
る第１室外熱交換器３ａを流れ、最も多く着霜する風上
側の第１室外熱交換器３ａについだ霜を溶かし、また同
時に前記電動膨張弁５をほぼ最大に開けて、減圧量を減
らし、吸入管側の低圧を上げて圧縮機１の保護を行うの
である。In the above configuration, during heating operation, the first
When frost begins to form on the outdoor heat exchanger 3a and the coil temperature decreases to below a certain temperature, the coil temperature thermistor 1o senses this temperature. 10, the electromagnetic two-way valve 8 is opened, and high-temperature, high-pressure gas flows from the discharge pipe through the capillary tube 9 and the bypass pipe 13, and flows through the first outdoor heat exchanger 3a located on the windward side, where the most amount of frost forms on the windward side. The frost on the first outdoor heat exchanger 3a is melted, and at the same time, the electric expansion valve 5 is opened almost to the maximum to reduce the amount of pressure reduction and raise the low pressure on the suction pipe side to protect the compressor 1. .
発明の効果
前記実施例の説明よシ明らかなように本発明は、四方弁
を暖房運転のままで、着霜した風上側の第１室外熱交換
器の法制だけへ、吐出管より高温高圧ガスをバイパスさ
せながらデフロストを行うようにしたものであるから、
着霜していない風下側の第２室外熱交換器にはバイパス
されず、室内熱交換器で凝縮されだ液冷媒を蒸発するた
め、従来よりデフロスト運転中の暖房能力が向上し、ま
たデフロスト運転時間の短縮が図れ、より快適な暖房運
転が可能となり、したがってＥＥＲの向上等の効果を発
揮するものである。Effects of the Invention As is clear from the description of the embodiments described above, the present invention allows high-temperature, high-pressure gas to be supplied from the discharge pipe only to the first outdoor heat exchanger on the windward side where the four-way valve is kept in heating operation. Because it is designed to defrost while bypassing the
Because the condensed saliva refrigerant is evaporated in the indoor heat exchanger without being bypassed to the second outdoor heat exchanger on the leeward side where frost has not formed, the heating capacity during defrost operation is improved compared to conventional methods, and the heating capacity during defrost operation is improved. The heating time can be shortened, more comfortable heating operation can be performed, and the EER can be improved.
また、従来よりバイパスされる量が減るため、液バツク
による圧縮機の故障が減り、耐久性が向上するという効
果も発揮する。Additionally, since the amount of bypass is reduced compared to the conventional method, compressor failures due to liquid back-up are reduced and durability is improved.
第１図は本発明の一実施例による空気調和機の冷凍サイ
クル図、第２図は同室外機内部の斜視図、第３図は従来
の空気調和機の冷凍サイクル図である。
１・・・・・圧縮機、３・・・・・・室外熱交換器、３
ａ・・・・・・第１室外熱交換器、３ｂ・・・・・・第
２室外熱交換器、６・・・・・・電動膨張弁、６・・・
・・・室内熱交換器、８・・・・・・電磁二方弁、９・
・・・・・キャピラリチューブ、１ｏ・・・・・・コイ
ル温度サーミスタ、１３・・・・・・バイパス管。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名Ｉ−
迩鵬機
３ａ−すｆ／Ｉｉ昇差老訣春
３ｂ−歩Ｚデ
第１図 ５＝質跡お張子
ｔ；−ｍ−・ｇ円鮎気祷呑
８・−を涌二牙午
９□−キャＣ°ラソｆ’ａ−プFIG. 1 is a refrigeration cycle diagram of an air conditioner according to an embodiment of the present invention, FIG. 2 is a perspective view of the interior of the outdoor unit, and FIG. 3 is a refrigeration cycle diagram of a conventional air conditioner. 1...Compressor, 3...Outdoor heat exchanger, 3
a...First outdoor heat exchanger, 3b...Second outdoor heat exchanger, 6...Electric expansion valve, 6...
...Indoor heat exchanger, 8...Solenoid two-way valve, 9.
... Capillary tube, 1o ... Coil temperature thermistor, 13 ... Bypass pipe. Name of agent: Patent attorney Toshio Nakao and one other person I-
迩鬬 3a-Sf/Ii Ascending old trick spring 3b-Step Zde 1st figure 5= Papier mache t; -Kya C°raso f'a-p
Claims (1)
連設してなる冷凍サイクルを備え、前記室外熱交換器を
互に並列接続され、かつ風上側の第１室外熱交換器と、
風下側の第２室外熱交換器に分割して構成し、前記第１
室外熱交換器の液側と圧縮機の吐出側間にバイパス管を
接続し、このバイパス管に第１室外熱交換器の温度を検
出するコイル温度サーミスタによって開閉する電磁二方
弁とバイパス用キャピラリチューブを設けた空気調和機
。A refrigeration cycle is provided in which a compressor, an outdoor heat exchanger, an expansion mechanism, and an indoor heat exchanger are sequentially connected, the outdoor heat exchangers are connected in parallel to each other, and a first outdoor heat exchanger on the windward side and ,
The first outdoor heat exchanger is divided into a second outdoor heat exchanger on the leeward side.
A bypass pipe is connected between the liquid side of the outdoor heat exchanger and the discharge side of the compressor, and an electromagnetic two-way valve that is opened and closed by a coil temperature thermistor that detects the temperature of the first outdoor heat exchanger and a bypass capillary are connected to this bypass pipe. Air conditioner with tubes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16004786A JPS6317369A (en) | 1986-07-08 | 1986-07-08 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16004786A JPS6317369A (en) | 1986-07-08 | 1986-07-08 | Air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6317369A true JPS6317369A (en) | 1988-01-25 |
Family
ID=15706771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16004786A Pending JPS6317369A (en) | 1986-07-08 | 1986-07-08 | Air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6317369A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014083867A1 (en) * | 2012-11-29 | 2014-06-05 | 三菱電機株式会社 | Air-conditioning device |
| JPWO2016121103A1 (en) * | 2015-01-30 | 2017-04-27 | 三菱電機株式会社 | Refrigeration cycle equipment |
-
1986
- 1986-07-08 JP JP16004786A patent/JPS6317369A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014083867A1 (en) * | 2012-11-29 | 2014-06-05 | 三菱電機株式会社 | Air-conditioning device |
| JP6021940B2 (en) * | 2012-11-29 | 2016-11-09 | 三菱電機株式会社 | Air conditioner |
| JPWO2014083867A1 (en) * | 2012-11-29 | 2017-01-05 | 三菱電機株式会社 | Air conditioner |
| US10001317B2 (en) | 2012-11-29 | 2018-06-19 | Mitsubishi Electric Corporation | Air-conditioning apparatus providing defrosting without suspending a heating operation |
| JPWO2016121103A1 (en) * | 2015-01-30 | 2017-04-27 | 三菱電機株式会社 | Refrigeration cycle equipment |
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