JPH09126601A - Controller for air conditioner - Google Patents
Controller for air conditionerInfo
- Publication number
- JPH09126601A JPH09126601A JP7280365A JP28036595A JPH09126601A JP H09126601 A JPH09126601 A JP H09126601A JP 7280365 A JP7280365 A JP 7280365A JP 28036595 A JP28036595 A JP 28036595A JP H09126601 A JPH09126601 A JP H09126601A
- Authority
- JP
- Japan
- Prior art keywords
- heat exchanger
- indoor heat
- temperature
- indoor
- exchanger temperature
- 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
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
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/021—Inverters therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、室内熱交換器の凍
結を防止する制御に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to control for preventing freezing of an indoor heat exchanger.
【０００２】[0002]
【従来の技術】従来の制御について、図面とともに説明
する。2. Description of the Related Art Conventional control will be described with reference to the drawings.
【０００３】図８において、圧縮機１、室内熱交換器
２、室外熱交換器３、減圧装置４により構成された冷凍
サイクル図をである。図７において、Ｔ１℃まで室内熱
交換器温度が低下すると圧縮機の運転周波数の上限値Ｈ
ｚ＝Ａとし、Ｔ２℃以下に室内熱交換器温度が低下する
と、圧縮機の運転を停止する。室内熱交換器温度による
圧縮機の運転周波数制御を１段階行うのみであった。FIG. 8 is a refrigeration cycle diagram composed of a compressor 1, an indoor heat exchanger 2, an outdoor heat exchanger 3 and a pressure reducing device 4. In FIG. 7, when the temperature of the indoor heat exchanger drops to T1 ° C., the upper limit value H of the operating frequency of the compressor
When z = A and the temperature of the indoor heat exchanger falls below T2 ° C., the operation of the compressor is stopped. The operation frequency control of the compressor based on the indoor heat exchanger temperature was only performed in one step.
【０００４】[0004]
【発明が解決しようとする課題】上記制御では、室内の
風量がダウンし、室内熱交換器の温度が急に低下するよ
うな、急激な負荷変化時にオーバーシュートにより、室
内熱交換器が凍結する恐れがあるという課題を有してい
た。In the above control, the indoor heat exchanger freezes due to an overshoot at the time of a sudden load change such that the air volume in the room decreases and the temperature of the indoor heat exchanger suddenly drops. It had a problem of fear.
【０００５】本発明は上記従来例の課題を解決するもの
で、室内熱交換器の凍結を防止することを目的とするも
のである。The present invention is intended to solve the above-mentioned problems of the conventional example, and an object thereof is to prevent freezing of the indoor heat exchanger.
【０００６】[0006]
【課題を解決するための手段】上記課題を解決するため
に本発明は、室内熱交換器温度の低下により圧縮機の運
転周波数設定値を少なくとも２段階に可変する制御装置
である。In order to solve the above-mentioned problems, the present invention is a control device for varying the operating frequency set value of the compressor in at least two stages by lowering the temperature of the indoor heat exchanger.
【０００７】また、本発明は、前記制御装置に室内熱交
換器温度の低下により、減圧装置の絞り量を少なくとも
２段階に可変する制御装置である。Further, the present invention is a control device for changing the throttle amount of the pressure reducing device in at least two stages by decreasing the temperature of the indoor heat exchanger in the control device.
【０００８】また、本発明は、前記制御装置に室内熱交
換器温度の低下により、室内側ファンの回転数を少なく
とも２段階に可変する制御装置である。The present invention is also a control device for changing the rotation speed of the indoor fan in at least two stages by decreasing the temperature of the indoor heat exchanger in the control device.
【０００９】[0009]
【発明の実施の形態】上記技術的手段による作用は以下
の通りである。The operation of the above technical means is as follows.
【００１０】本発明は、室内熱交換器温度を入力とし、
圧縮機の運転周波数設定値を少なくとも２段階に可変す
ることにより、室内熱交換器の凍結を防止するものであ
る。The present invention uses the indoor heat exchanger temperature as an input,
By varying the operating frequency setting value of the compressor in at least two stages, the freezing of the indoor heat exchanger is prevented.
【００１１】また、本発明は、室内熱交換器温度を入力
とし、減圧装置の絞り量を少なくとも２段階に可変する
ことにより、室内熱交換器の凍結を防止するものであ
る。Further, the present invention prevents freezing of the indoor heat exchanger by inputting the indoor heat exchanger temperature and varying the throttle amount of the pressure reducing device in at least two stages.
【００１２】また、本発明は、室内熱交換器温度を入力
とし、室内側ファンの回転数を少なくも２段階に可変す
ることにより、室内熱交換器の凍結を防止するものであ
る。Further, the present invention prevents freezing of the indoor heat exchanger by inputting the temperature of the indoor heat exchanger and varying the rotation speed of the indoor fan in at least two stages.
【００１３】[0013]
【実施例】以下、本発明の実施例について図面とともに
説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１４】図８は、本発明による実施例における冷凍
サイクル図であるが、前記従来技術で説明したものと同
じ図であるため、省略する。FIG. 8 is a refrigeration cycle diagram in the embodiment according to the present invention, but it is omitted because it is the same diagram as described in the above-mentioned prior art.
【００１５】図１は、本発明の第一の実施例におけるフ
ローチャートであり、１０１で冷房運転を開始すると、
室内熱交換器温度１０２を検知し、室内熱交換器温度１
０３がＴ１℃以下になると圧縮機の運転周波数の上限値
１０６をＨｚ＝Ａにする。また、室内熱交換器温度１０
４がＴ２℃以下になると圧縮機の運転周波数の上限値１
０７をＨｚ＝Ｂにする。更に、室内熱交換器温度１０５
がＴ３℃以下になると１０８の圧縮機の運転を停止す
る。FIG. 1 is a flow chart in the first embodiment of the present invention. When the cooling operation is started at 101,
The indoor heat exchanger temperature 102 is detected, and the indoor heat exchanger temperature 1
When 03 becomes T1 ° C. or less, the upper limit value 106 of the operating frequency of the compressor is set to Hz = A. In addition, the indoor heat exchanger temperature 10
When 4 becomes T2 ° C or less, the upper limit value of the operating frequency of the compressor is 1
07 is set to Hz = B. Further, the indoor heat exchanger temperature 105
When the temperature becomes T3 ° C. or lower, the operation of the compressor 108 is stopped.
【００１６】図４は、本発明の第１の実施例における制
御図であり、Ｔ１℃まで室内熱交換器温度が低下すると
圧縮機の運転周波数の上限値をＡＨｚにする。Ｔ２℃ま
で室内熱交換器温度が低下すると、更に圧縮機の運転周
波数の上限値をＡＨｚにする手段で、２段階方式による
圧縮機の運転周波数を規制し、室内熱交換器温度の急激
な低下による室内熱交換器の凍結を防ぐ。そして、Ｔ３
℃以下に室内熱交換器温度が低下すると、圧縮機の運転
を停止する。FIG. 4 is a control diagram in the first embodiment of the present invention. When the temperature of the indoor heat exchanger is lowered to T1 ° C., the upper limit of the operating frequency of the compressor is set to AHz. When the temperature of the indoor heat exchanger drops to T2 ° C, the operating frequency of the compressor is regulated by the two-stage method by means of setting the upper limit of the operating frequency of the compressor to AHz, and the temperature of the indoor heat exchanger drops sharply. Prevents freezing of the indoor heat exchanger. And T3
When the temperature of the indoor heat exchanger falls below ℃, the operation of the compressor is stopped.
【００１７】図２は、本発明の第一の実施例におけるフ
ローチャートであり、２０１で冷房運転を開始すると、
室内熱交換器温度２０２を検知し、室内熱交換器温度２
０３がＴ１℃以下になると減圧装置の絞り量２０６を１
５０パルスにする。また、室内熱交換器温度２０４がＴ
２℃以下になると減圧装置の絞り量２０７を３００パル
スにする。更に室内熱交換器温度２０５がＴ３℃以下に
なると減圧装置の絞り量２０８を４８０パルスにする。FIG. 2 is a flow chart in the first embodiment of the present invention. When the cooling operation is started in 201,
Indoor heat exchanger temperature 202 is detected, and indoor heat exchanger temperature 2
When 03 becomes T1 ° C or less, the reduction amount 206 of the pressure reducing device is set to
50 pulses. In addition, the indoor heat exchanger temperature 204 is T
When the temperature becomes 2 ° C. or less, the throttle amount 207 of the pressure reducing device is set to 300 pulses. Further, when the indoor heat exchanger temperature 205 becomes T3 ° C. or lower, the throttle amount 208 of the pressure reducing device is set to 480 pulses.
【００１８】図５は、本発明の第２の実施例における制
御図であり、Ｔ１℃まで室内熱交換器温度が低下すると
減圧装置の絞り量を１５０パルスにする。Ｔ２℃まで室
内熱交換器温度が低下すると、更に減圧装置の絞り量を
３００パルスにし、２段階方式により減圧装置の絞り量
を緩和し、室内熱交換器温度の急激な低下による室内熱
交換器の凍結を防ぐ。FIG. 5 is a control diagram in the second embodiment of the present invention. When the temperature of the indoor heat exchanger is lowered to T1 ° C., the throttle amount of the pressure reducing device is set to 150 pulses. When the temperature of the indoor heat exchanger is lowered to T2 ° C, the throttle amount of the decompressor is further set to 300 pulses, and the throttle amount of the decompressor is alleviated by the two-stage method. Prevent freezing.
【００１９】図３は、本発明の第一の実施例におけるフ
ローチャートであり、３０１で冷房運転を開始すると、
室内熱交換器温度３０２を検知し、室内熱交換器温度３
０３がＴ１℃以下になると室内側ファンのＭＩＮ回転数
３０６をＮ１にする。また、室内熱交換器温度３０４が
Ｔ２℃以下になると室内側ファンのＭＩＮ回転数３０７
をＮ２にする。FIG. 3 is a flow chart in the first embodiment of the present invention. When the cooling operation is started in 301,
The indoor heat exchanger temperature 302 is detected, and the indoor heat exchanger temperature 3
When 03 falls below T1 ° C, the MIN rotation speed 306 of the indoor fan is set to N1. Further, when the indoor heat exchanger temperature 304 becomes T2 ° C. or lower, the indoor fan MIN rotation speed 307
To N2.
【００２０】図６は、本発明の第３の実施例における制
御図であり、Ｔ１℃まで室内熱交換器温度が低下すると
室内側ファンのＭＩＮ回転をＮ１にする。Ｔ２℃まで室
内熱交換器温度が低下すると、更に室内側ファンのＭＩ
Ｎ回転数をＮ２にアップし、２段階方式により室内側フ
ァンの回転数を規制し、室内熱交換器温度の急激な低下
による室内熱交換器の凍結を防ぐ。FIG. 6 is a control diagram in the third embodiment of the present invention. When the temperature of the indoor heat exchanger drops to T1 ° C., the MIN rotation of the indoor fan is set to N1. When the temperature of the indoor heat exchanger drops to T2 ℃, the MI of the indoor fan is further increased.
The number of N rotations is increased to N2, and the number of rotations of the indoor fan is regulated by a two-stage system to prevent the indoor heat exchanger from freezing due to a sharp decrease in the temperature of the indoor heat exchanger.
【００２１】[0021]
【発明の効果】上記制御内容によれば、室内配管温度の
低下に伴い、圧縮機の最大運転周波数を少なくとも２段
階に可変することにより室内熱交換器の凍結を防止する
ことができる。According to the above control contents, it is possible to prevent freezing of the indoor heat exchanger by varying the maximum operating frequency of the compressor in at least two stages as the temperature of the indoor piping decreases.
【００２２】また、減圧装置の絞り量を少なくとも２段
階に可変することにより室内熱交換器の凍結を防止する
ことができる。Further, the freezing of the indoor heat exchanger can be prevented by changing the throttle amount of the pressure reducing device in at least two stages.
【００２３】また、室内側ファンの回転数を少なくとも
２段階に可変することにより室内熱交換器の凍結を防止
することができる。Further, the indoor heat exchanger can be prevented from freezing by varying the rotation speed of the indoor fan in at least two stages.
【図１】第１の実施例におけるフローチャートFIG. 1 is a flowchart in a first embodiment.
【図２】第２の実施例におけるフローチャートFIG. 2 is a flowchart in a second embodiment.
【図３】第３の実施例におけるフローチャートFIG. 3 is a flowchart in a third embodiment.
【図４】第１の実施例における制御手段の制御図FIG. 4 is a control diagram of the control means in the first embodiment.
【図５】第２の実施例における制御手段の制御図FIG. 5 is a control diagram of control means in the second embodiment.
【図６】第３の実施例における制御手段の制御図FIG. 6 is a control diagram of control means in the third embodiment.
【図７】従来の制御手段の制御図FIG. 7 is a control diagram of conventional control means.
【図８】冷凍サイクル図FIG. 8: Refrigeration cycle diagram
１ 圧縮機 ２ 室内熱交換器 ３ 室外熱交換器 ４ 減圧装置 1 Compressor 2 Indoor heat exchanger 3 Outdoor heat exchanger 4 Pressure reducing device
───────────────────────────────────────────────────── フロントページの続き (72)発明者 藤社 輝夫 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Teruo Fujisha 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.
Claims (3)
圧装置により構成された冷凍サイクルと、室内熱交換器
温度を検出する室内熱交換器温度検出手段と、予め設定
された室内配管温度を記憶する室内配管温度記憶手段を
具備し、前記室内熱交換器温度検出手段により検出され
た室内熱交換器温度と、前記室内配管温度記憶手段に予
め設定された室内熱交換器温度に達したことを判定する
比較手段により、前記比較手段の出力に応じて前記圧縮
機の運転周波数設定値を多段階に可変する空気調和機の
制御装置。1. A refrigeration cycle constituted by a compressor, an indoor heat exchanger, an outdoor heat exchanger, and a decompression device, an indoor heat exchanger temperature detecting means for detecting an indoor heat exchanger temperature, and a preset indoor space. An indoor pipe temperature storage means for storing the pipe temperature is provided, and the indoor heat exchanger temperature detected by the indoor heat exchanger temperature detection means and the indoor heat exchanger temperature preset in the indoor pipe temperature storage means are set. A control device for an air conditioner, wherein the comparison means for determining that the operation frequency has reached the operating frequency set value of the compressor is changed in multiple stages according to the output of the comparison means.
た室内熱交換器温度と、室内熱交換器温度記憶手段に予
め設定された室内熱交換器温に達したことを判定する比
較手段により、前記比較手段の出力に応じて前記減圧装
置の絞り量を多段階に可変する請求項１記載の空気調和
機の制御装置。2. An indoor heat exchanger temperature detected by the indoor heat exchanger temperature detecting means and a comparing means for judging that the indoor heat exchanger temperature preset in the indoor heat exchanger temperature storage means has been reached. 2. The control device for an air conditioner according to claim 1, wherein the throttle amount of the pressure reducing device is varied in multiple stages according to the output of the comparing means.
させる駆動装置を搭載し、室内熱交換器温度検出手段に
より検出された室内熱交換器温度と、室内熱交換器温度
記憶手段に予め設定された室内熱交換器温に達したこと
を判定する比較手段により、前記比較手段の出力に応じ
て前記室内側ファンの回転数を多段階に可変する請求項
１記載の空気調和機の制御装置。3. An indoor fan and a drive device for rotating the indoor fan are mounted, and the indoor heat exchanger temperature detected by the indoor heat exchanger temperature detecting means and the indoor heat exchanger temperature storing means are stored in advance. The control of the air conditioner according to claim 1, wherein the rotation speed of the indoor fan is changed in multiple stages according to the output of the comparison means by the comparison means that determines that the set indoor heat exchanger temperature has been reached. apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7280365A JPH09126601A (en) | 1995-10-27 | 1995-10-27 | Controller for air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7280365A JPH09126601A (en) | 1995-10-27 | 1995-10-27 | Controller for air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09126601A true JPH09126601A (en) | 1997-05-16 |
Family
ID=17624003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7280365A Pending JPH09126601A (en) | 1995-10-27 | 1995-10-27 | Controller for air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09126601A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100333395B1 (en) * | 1999-06-28 | 2002-04-24 | 윤종용 | low-temperature control operation method of multitude-type air conditioner |
| JP2012076610A (en) * | 2010-10-01 | 2012-04-19 | Denso Corp | Vehicle air conditioning device |
| JP2014190557A (en) * | 2013-03-26 | 2014-10-06 | Corona Corp | Heat pump device |
| JP2014196893A (en) * | 2013-03-29 | 2014-10-16 | 株式会社コロナ | Heat pump device |
| WO2017002546A1 (en) * | 2015-07-01 | 2017-01-05 | サンデン・オートモーティブクライメイトシステム株式会社 | Air conditioner for vehicle |
| CN111169251A (en) * | 2020-01-02 | 2020-05-19 | 珠海格力电器股份有限公司 | Control method for air conditioner high-voltage protection, computer readable storage medium and air conditioner |
| CN111780361A (en) * | 2020-06-30 | 2020-10-16 | 海信（山东）空调有限公司 | Air conditioner |
-
1995
- 1995-10-27 JP JP7280365A patent/JPH09126601A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100333395B1 (en) * | 1999-06-28 | 2002-04-24 | 윤종용 | low-temperature control operation method of multitude-type air conditioner |
| JP2012076610A (en) * | 2010-10-01 | 2012-04-19 | Denso Corp | Vehicle air conditioning device |
| JP2014190557A (en) * | 2013-03-26 | 2014-10-06 | Corona Corp | Heat pump device |
| JP2014196893A (en) * | 2013-03-29 | 2014-10-16 | 株式会社コロナ | Heat pump device |
| WO2017002546A1 (en) * | 2015-07-01 | 2017-01-05 | サンデン・オートモーティブクライメイトシステム株式会社 | Air conditioner for vehicle |
| JP2017013652A (en) * | 2015-07-01 | 2017-01-19 | サンデン・オートモーティブクライメイトシステム株式会社 | Vehicular air conditioner |
| US10703166B2 (en) | 2015-07-01 | 2020-07-07 | Sanden Automotive Climate Systems Corporation | Air conditioner for vehicle |
| CN111169251A (en) * | 2020-01-02 | 2020-05-19 | 珠海格力电器股份有限公司 | Control method for air conditioner high-voltage protection, computer readable storage medium and air conditioner |
| CN111169251B (en) * | 2020-01-02 | 2021-10-29 | 珠海格力电器股份有限公司 | Control method for air conditioner high-voltage protection, computer readable storage medium and air conditioner |
| CN111780361A (en) * | 2020-06-30 | 2020-10-16 | 海信（山东）空调有限公司 | Air conditioner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20040413 |