JPS6071838A - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JPS6071838A JPS6071838A JP58178595A JP17859583A JPS6071838A JP S6071838 A JPS6071838 A JP S6071838A JP 58178595 A JP58178595 A JP 58178595A JP 17859583 A JP17859583 A JP 17859583A JP S6071838 A JPS6071838 A JP S6071838A
- Authority
- JP
- Japan
- Prior art keywords
- expansion valve
- opening
- heat exchanger
- opening degree
- heating operation
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
この発明は、電動式膨張弁を備えた空気調和機に関する
。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an air conditioner equipped with an electric expansion valve.
一般に、この種の空気調和機にあっては、蒸発器の冷媒
過熱度を検出し、この冷媒過熱度に応じて電動式膨張弁
の開度を調節することにより、冷凍サイクルの安定運転
を行なうようにしている。Generally, in this type of air conditioner, stable operation of the refrigeration cycle is achieved by detecting the degree of superheating of the refrigerant in the evaporator and adjusting the opening degree of the electric expansion valve according to the degree of superheating of the refrigerant. That's what I do.
ただし、室内温度制御による運転再開や除霜運転終了後
の暖房運転復帰に際しての開度制御についてはまだ充分
な考慮がなされていないのが現状であり、必らずしも安
定運転が実施されているとはいえず、運転再開あるいは
暖房運転復帰に際しての運転の立上がり特性などの点で
改善の余地があった。However, the current situation is that sufficient consideration has not yet been given to opening degree control when restarting operation using indoor temperature control or returning to heating operation after defrosting operation, and stable operation is not necessarily carried out. However, there was room for improvement in terms of start-up characteristics when restarting operation or returning to heating operation.
（発明の目的）
この発明は、上記のような事情に鑑みてなされたもので
、その目的とするところは、室内温度制御による運転再
開あるいは除霜運転終了後の暖房運転復帰に際しての運
転の立上がり特性を向上することができ、快適空調を可
能とする空気調和機を提供することにある。(Objective of the Invention) This invention was made in view of the above-mentioned circumstances, and its purpose is to prevent the start-up of the operation when restarting the operation by indoor temperature control or returning to the heating operation after the end of the defrosting operation. An object of the present invention is to provide an air conditioner that can improve characteristics and provide comfortable air conditioning.
この発明は、室内温度制御による運転停止または暖房運
転における除霜運転開始に際し、電動式膨張弁の開度を
記憶しておき、室内温度制御による運転再開または除霜
運転終了後の暖房運転復帰に際し、電動式膨張弁の開度
を上記記憶した開度よりも大きい開度に設定するもので
ある。This invention stores the opening degree of the electric expansion valve when stopping operation by indoor temperature control or starting defrosting operation in heating operation, and when restarting operation by indoor temperature control or returning heating operation after finishing defrosting operation. , the opening degree of the electric expansion valve is set to a larger opening degree than the above-mentioned stored opening degree.
（発明の実施例〕
以下、この発明の一実施例について図面を参照して説明
する。(Embodiment of the Invention) An embodiment of the invention will be described below with reference to the drawings.
第１図に示すように、圧縮機１．四方弁２．室外側熱交
換器３．ドライヤ４．減圧装置であるところの電動式膨
張弁５．室内側熱交換器６などが順次連通されてヒート
ポンプ式冷凍サイクルが構成される。そして、電動式膨
張弁５および室内側熱交換器６の相互連通部と圧縮機１
の吸込側配管との間にはキャピラリチューブ７を介して
バイパスサイクル８が配設される。こうして、冷房運転
時は図示実線矢印の方向に冷媒が流れて冷房サイクルが
形成され、室外側熱交換器３が凝縮器として作用すると
ともに室内側熱交換器６が蒸発器として作用し、暖房運
転時は四方弁２が切換作動することにより図示破線矢印
の方向に冷媒が流れて暖房サイクルが形成され、室内側
熱交換器６が凝縮器として作用するとともに室外側熱交
換器３が蒸発器として作用する。As shown in FIG. 1, a compressor 1. Four-way valve 2. Outdoor heat exchanger 3. Dryer 4. 5. Electric expansion valve which is a pressure reducing device. The indoor heat exchanger 6 and the like are successively connected to form a heat pump refrigeration cycle. Then, the mutual communication part of the electric expansion valve 5 and the indoor heat exchanger 6 and the compressor 1
A bypass cycle 8 is disposed via a capillary tube 7 between the suction side piping and the suction side piping. In this way, during cooling operation, the refrigerant flows in the direction of the solid arrow in the figure to form a cooling cycle, the outdoor heat exchanger 3 acts as a condenser, and the indoor heat exchanger 6 acts as an evaporator, and during heating operation When the four-way valve 2 switches, the refrigerant flows in the direction of the dashed arrow in the figure to form a heating cycle, and the indoor heat exchanger 6 acts as a condenser while the outdoor heat exchanger 3 acts as an evaporator. act.
しかして、室外側熱交換器３には熱交温度センサ（たと
えばサーミスタ）９が取付けられる。また、バイパスサ
イクル８において、キャピラリチューブ７と圧縮機１の
吸込側配管との間には冷媒温度センサ（たとえばサーミ
スタ）１０が取付けられる。さらに、圧縮１１１の吸込
み側配管において、四方弁２とバイパスサイクル８の連
通部との間には冷媒温度センサ（たとえばサーミスタ）
１１が取付けられる。なお、圧縮機１の冷媒吐出側配管
には高圧スイッチ１２が取付けられており高圧側圧力が
異常上昇して高圧スイッチ１２が作動すると圧縮機１の
運転が停止するようになっている。A heat exchanger temperature sensor (for example, a thermistor) 9 is attached to the outdoor heat exchanger 3. Furthermore, in the bypass cycle 8, a refrigerant temperature sensor (for example, a thermistor) 10 is installed between the capillary tube 7 and the suction side piping of the compressor 1. Furthermore, in the suction side piping of the compression 111, a refrigerant temperature sensor (for example, a thermistor) is installed between the four-way valve 2 and the communication part of the bypass cycle 8.
11 is installed. A high pressure switch 12 is attached to the refrigerant discharge side piping of the compressor 1, so that if the high pressure side pressure rises abnormally and the high pressure switch 12 is activated, the operation of the compressor 1 is stopped.
一方、２０は主制御部で、マイクロコンビコータおよび
その周辺回路からなり、運転操作部２１からの指令、室
内温度センサ２２の検知温度、熱交温度センサ９の検知
温度、および冷媒温度センサ１０．１１の検知温度など
に応じて圧縮機１の運転制御および四方弁２の切換制御
などを行なうとともに、膨張弁駆動回路２３に指令を与
えて電動式膨張弁５の開度制御を行なうものである。On the other hand, 20 is a main control section, which consists of a micro combi coater and its peripheral circuits, and receives commands from the operation section 21, the temperature detected by the indoor temperature sensor 22, the temperature detected by the heat exchanger temperature sensor 9, and the refrigerant temperature sensor 10. In addition to controlling the operation of the compressor 1 and switching the four-way valve 2 according to the detected temperature of the valve 11, the controller also controls the opening of the electric expansion valve 5 by giving a command to the expansion valve drive circuit 23. .
次に、上記のような構成において第２図を参照しながら
動作を説明する。Next, the operation of the above configuration will be explained with reference to FIG.
まず、電源を投入しておき、運転操作部２１で冷房運転
および室内温度を設定し、かつ運転スイッチをオンする
。しかして、室内温度センサ２２で検知される室内温度
が上記設定温度よりも高ければ圧縮Ｉ１１の運転が開始
される。すなわち、図示実線方向に冷媒が流れて冷房サ
イクルが形成され、冷房運転が開始される。このとき、
圧縮ｌ１ｌｌに吸込まれる冷媒の温度がセンサ１０で検
知され、かつバイパスサイクル８を通る冷媒の温度がセ
ン１す１１で検知される。主制御部２０は、センサ１０
の検知温度とセンサ１１の検知温度との差つまり蒸発器
として作用している室内側熱交換器６の冷媒過熱度を検
出し、その過熱度が設定目標過熱度に近付くように開度
制御指令を膨張弁駆動回５−
路２３に与える。膨張弁駆動回路２３は、与えられる開
度制御指令に応じた数の開方向駆動パルス信号または閉
方向駆動パルス信号を電動式膨張弁５に与え、その電動
式膨張弁５の開度を増大または減少せしめる。この場合
、下記表に示す条件に基づいて開度制御が行なわれるよ
うになっており、その条件は主制御部２０内のマイクロ
コンピュータに予めプログラム設定されている。なお、
設定される開度は主制御部２ｏにおけるマイクロコンピ
ュータ内のメモリに逐次記憶される。First, the power is turned on, the cooling operation and room temperature are set using the operation control unit 21, and the operation switch is turned on. If the indoor temperature detected by the indoor temperature sensor 22 is higher than the set temperature, the compression I11 starts operating. That is, the refrigerant flows in the direction of the solid line in the figure to form a cooling cycle, and cooling operation is started. At this time,
The temperature of the refrigerant sucked into the compressor 11ll is detected by a sensor 10, and the temperature of the refrigerant passing through the bypass cycle 8 is detected by a sensor 111. The main control unit 20 controls the sensor 10
The difference between the temperature detected by the sensor 11 and the temperature detected by the sensor 11, that is, the degree of superheating of the refrigerant in the indoor heat exchanger 6 acting as an evaporator, is detected, and an opening control command is issued so that the degree of superheat approaches the set target degree of superheat. is applied to the expansion valve drive circuit 5-path 23. The expansion valve drive circuit 23 applies a number of opening direction drive pulse signals or closing direction drive pulse signals to the electric expansion valve 5 according to the given opening degree control command, and increases or decreases the opening degree of the electric expansion valve 5. decrease. In this case, the opening control is performed based on the conditions shown in the table below, and the conditions are programmed in the microcomputer in the main control section 20 in advance. In addition,
The set opening degree is sequentially stored in the memory in the microcomputer in the main control section 2o.
−〇−
しかして、室内温度が設定温度に達すると、圧縮機１の
運転がオフし、冷房運転が停止（中断）する。このとき
、電動式膨張弁５の開度は主制御部２０に記憶されるこ
とになる。そして、この中断によって室内温度が再び設
定温度以上になると、主制御部２０はまず電動式膨張弁
５を全開せしめつぎに全開せしめるとともに、圧縮機１
の運転をオンし、このオンと同時に電動式膨張弁５の開
度を記憶開度（冷房運転停止時の開度）よりもαだけ大
きい開度に設定する。すなわち、この運転再開時は、運
転停止時よりも負荷が大きくなるため、その負荷の増大
分だけ冷媒流量をアップして冷房能力を高めるものであ
り、これにより良好な立上がりをもって冷房運転を再開
することができる。-〇- However, when the indoor temperature reaches the set temperature, the operation of the compressor 1 is turned off, and the cooling operation is stopped (interrupted). At this time, the opening degree of the electric expansion valve 5 is stored in the main control unit 20. When the indoor temperature rises above the set temperature again due to this interruption, the main controller 20 first fully opens the electric expansion valve 5 and then fully opens the compressor 1.
operation is turned on, and at the same time as turning on, the opening degree of the electric expansion valve 5 is set to an opening degree that is larger than the stored opening degree (the opening degree when the cooling operation is stopped) by α. In other words, when restarting operation, the load is larger than when stopping, so the refrigerant flow rate is increased by the increased load to increase the cooling capacity, thereby restarting cooling operation with a good start. be able to.
一方、暖房運転時も同様な動作が行なわれるが、この暖
房運転においては蒸発器として作用する室外側熱交換器
３が徐々に着霜すようになる。しかして、室外側熱交換
器３が着霜すると、それが熱交温度センサ９で検知され
、主制御部２０によって四方弁２が切換作動する。なお
、このときの電動式膨張弁５の開度は主制御部２ｏに記
憶される。On the other hand, a similar operation is performed during heating operation, but in this heating operation, the outdoor heat exchanger 3, which functions as an evaporator, gradually becomes frosted. When the outdoor heat exchanger 3 becomes frosted, this is detected by the heat exchanger temperature sensor 9, and the four-way valve 2 is switched by the main control section 20. Note that the opening degree of the electric expansion valve 5 at this time is stored in the main control section 2o.
しかして、除霜サイクル（冷房サイクル）が形成され、
暖房運転が停止（中断）して室外側熱交換器３の除霜が
行なわれる。しかる後、室外側熱交換器３の除霜が完了
すると、主制御部２ｏは四方弁２を復帰させ、除霜サイ
クルを解除して暖房運転を再開する。同時に、主制御部
２ｏは、電動式膨張弁５の開度を記憶開度（除霜運転開
始に際しての開度）よりもαだけ大きい開度に設定する
。Thus, a defrosting cycle (cooling cycle) is formed,
The heating operation is stopped (interrupted) and the outdoor heat exchanger 3 is defrosted. Thereafter, when the defrosting of the outdoor heat exchanger 3 is completed, the main controller 2o returns the four-way valve 2, cancels the defrosting cycle, and restarts the heating operation. At the same time, the main control unit 2o sets the opening degree of the electric expansion valve 5 to an opening degree that is larger than the stored opening degree (the opening degree at the time of starting the defrosting operation) by α.
すなわち、この暖房運転復帰に際しても負荷が大きくな
ることに対処し、その負荷の増大分だけ冷媒流量をアッ
プして暖房能力を高めるものであり、これにより良好な
立上がりをもって暖房運転を再開することができる。In other words, when returning to heating operation, the heating capacity is increased by increasing the refrigerant flow rate by the increased load in order to cope with the increase in load.This allows heating operation to resume with a good start. can.
このように、室内温度制御による運転停止または暖房運
転における除霜運転開始に際し、電動式膨張弁５の開度
を記憶しておき、室内温度制御による運転再開または除
霜運転終了後の暖房運転復帰に際し、電動式膨張弁５の
開度を上記記憶した開度よりも大きい開度に設定するこ
とにより、運転の立上がり特性を向上することができ、
熱損失の少ない効率の良い空調が可能となる。In this way, when stopping operation by indoor temperature control or starting defrosting operation during heating operation, the opening degree of the electric expansion valve 5 is memorized, and operation can be restarted by indoor temperature control or returning to heating operation after defrosting operation is finished. At this time, by setting the opening degree of the electric expansion valve 5 to a larger opening degree than the above-mentioned memorized opening degree, the start-up characteristics of the operation can be improved.
Efficient air conditioning with less heat loss is possible.
なお、この発明は、上記実施例に限定されるものではな
く、要旨を変えない範囲で種々変形実施可能なことは勿
論である。It should be noted that the present invention is not limited to the above-mentioned embodiments, and it goes without saying that various modifications can be made without changing the gist.
以上述べたようにこの発明によれば、室内温度制御によ
る運転再開あるいは除霜運転終了後の暖房運転復帰に際
しての運転の立上がり特性を向上することができ、快適
空調を可能とする空気調和機を提供できる。As described above, according to the present invention, it is possible to improve the start-up characteristics of the operation when restarting the operation by indoor temperature control or returning to the heating operation after the end of the defrosting operation. Can be provided.
第１図はこの発明の一実施例を示す全体的な構成図、第
２図は同実施例の動作を説明すするためのフローチャー
トである。
１・・・圧縮機、５・・・電動式膨張弁、９・・・熱交
温度センサ、１０．１１・・・冷媒温度センサ、２ｏ−
・・主制御部、２３・・・膨張弁駆動回路。
出願人代理人 弁理士 鈴江武彦
一〇−
第１図FIG. 1 is an overall configuration diagram showing an embodiment of the present invention, and FIG. 2 is a flowchart for explaining the operation of the embodiment. 1... Compressor, 5... Electric expansion valve, 9... Heat exchanger temperature sensor, 10.11... Refrigerant temperature sensor, 2o-
...Main control section, 23...Expansion valve drive circuit. Applicant's agent Patent attorney Takehiko Suzue Figure 1
Claims (1)
してなるヒートポンプ式冷凍サイクルと、前記蒸発器の
冷媒過熱度に応じて前記電動式膨張弁の開度を制御する
手段と、室内温度制御による運転停止または暖房運転に
おける除霜運転開始に際し、前記電動式膨張弁の開度を
記憶する手段と、室内温度制御による運転再開または除
霜運転終了後の暖房運転復帰に際し、前記電動式膨張弁
の開度を前記記憶した開度よりも大きい開度に設定する
手段とを具備したことを特徴とする空気調和機。A heat pump type refrigeration cycle in which a compressor, a condenser, an electric expansion valve, an evaporator, etc. are connected in sequence, and a means for controlling the opening degree of the electric expansion valve according to the degree of superheating of the refrigerant in the evaporator. , means for storing the opening degree of the electric expansion valve when stopping operation by indoor temperature control or starting defrosting operation in heating operation; An air conditioner comprising: means for setting the opening degree of the electric expansion valve to a larger opening degree than the stored opening degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58178595A JPS6071838A (en) | 1983-09-27 | 1983-09-27 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58178595A JPS6071838A (en) | 1983-09-27 | 1983-09-27 | Air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6071838A true JPS6071838A (en) | 1985-04-23 |
| JPH04174B2 JPH04174B2 (en) | 1992-01-06 |
Family
ID=16051201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58178595A Granted JPS6071838A (en) | 1983-09-27 | 1983-09-27 | Air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6071838A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02282644A (en) * | 1989-04-24 | 1990-11-20 | Daikin Ind Ltd | Operation-control device in air-conditioning apparatus |
| JP2006329590A (en) * | 2005-05-30 | 2006-12-07 | Daikin Ind Ltd | Humidity conditioner |
| JP2008014590A (en) * | 2006-07-07 | 2008-01-24 | Babcock Hitachi Kk | Boiler device |
| CN105042971A (en) * | 2015-09-15 | 2015-11-11 | 珠海格力电器股份有限公司 | Heat pump unit and control method and device thereof |
| WO2015182196A1 (en) * | 2014-05-30 | 2015-12-03 | シャープ株式会社 | Air conditioner and air conditioner control method |
| JP2018128158A (en) * | 2017-02-06 | 2018-08-16 | ダイキン工業株式会社 | Air conditioner |
-
1983
- 1983-09-27 JP JP58178595A patent/JPS6071838A/en active Granted
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02282644A (en) * | 1989-04-24 | 1990-11-20 | Daikin Ind Ltd | Operation-control device in air-conditioning apparatus |
| JP2006329590A (en) * | 2005-05-30 | 2006-12-07 | Daikin Ind Ltd | Humidity conditioner |
| JP2008014590A (en) * | 2006-07-07 | 2008-01-24 | Babcock Hitachi Kk | Boiler device |
| WO2015182196A1 (en) * | 2014-05-30 | 2015-12-03 | シャープ株式会社 | Air conditioner and air conditioner control method |
| JP2015224860A (en) * | 2014-05-30 | 2015-12-14 | シャープ株式会社 | Air conditioner, control method of air conditioner, and control program for air conditioner |
| CN106062486A (en) * | 2014-05-30 | 2016-10-26 | 夏普株式会社 | Air conditioner and air conditioner control method |
| CN106062486B (en) * | 2014-05-30 | 2019-09-03 | 夏普株式会社 | The control method of air conditioner and air conditioner |
| CN105042971A (en) * | 2015-09-15 | 2015-11-11 | 珠海格力电器股份有限公司 | Heat pump unit and control method and device thereof |
| JP2018128158A (en) * | 2017-02-06 | 2018-08-16 | ダイキン工業株式会社 | Air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04174B2 (en) | 1992-01-06 |
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