JPH04203717A - Rotating speed control method of outdoor fan for air-cooled air-conditioner - Google Patents

Rotating speed control method of outdoor fan for air-cooled air-conditioner

Info

Publication number
JPH04203717A
JPH04203717A JP2328952A JP32895290A JPH04203717A JP H04203717 A JPH04203717 A JP H04203717A JP 2328952 A JP2328952 A JP 2328952A JP 32895290 A JP32895290 A JP 32895290A JP H04203717 A JPH04203717 A JP H04203717A
Authority
JP
Japan
Prior art keywords
outdoor fan
fan motor
air
outdoor
rotation speed
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
Application number
JP2328952A
Other languages
Japanese (ja)
Inventor
Kazuhiro Takahashi
和弘 高橋
Toyo Washimi
鷲見　東洋
Fumihiro Kato
文浩 加藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Hitachi Shimizu Engineering Co Ltd
Original Assignee
Hitachi Ltd
Hitachi Shimizu Engineering Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd, Hitachi Shimizu Engineering Co Ltd filed Critical Hitachi Ltd
Priority to JP2328952A priority Critical patent/JPH04203717A/en
Publication of JPH04203717A publication Critical patent/JPH04203717A/en
Pending legal-status Critical Current

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
    • F25B2600/11—Fan speed control
    • F25B2600/111—Fan speed control of condenser fans
    • 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

Abstract

PURPOSE:To attain an optimum operating status by a method wherein the highest rotation speed of an outdoor fan motor is set corresponding to the outdoor temperature, and the rotating speed is kept lower than the highest rotation speed corresponding to the surrounding noise level. CONSTITUTION:An air-conditioner consists of a compressor 1, an air-cooled condenser 2, an outdoor fan 2a, an outdoor fan motor 2b, a pressure reducing device 3, an evaporator 4, an indoor fan 4a, an indoor fan motor 4b, a controller 5, a sound pressure sensor 6, a room temperature detector thermistor 7, and an outside temperature detector thermistor 8. The sound pressure sensor 6, the outside temperature detector thermistor 8 and the room temperature detector thermistor 7 are connected to the controller 5 to input data to the controller 5. The rotating speed of the outdoor fan motor 2b is input to the microcomputer 5a, and signals from the outside temperature detector thermistor 8 and the sound pressure sensor 6 are input via an input circuit 5b. The secondary voltage is controlled via a rectangular wave generator 5c for controlling the rotation speed of the outdoor fan motor 2b. In this case, the control patterns of the microcomputer 5a are continuously shifted down to the low noise level pattern B on the basis of the highest rotating speed noise level pattern A corresponding to the outside temperature.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は空冷式空気調和機の室外ファンモータの回転数
制御方式に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a rotation speed control system for an outdoor fan motor of an air-cooled air conditioner.

〔従来の技術〕[Conventional technology]

従来の周囲騒音レベルによる室外ファンの回転数制御は
、特開平１−２３９３３７号公報に記載の様に、周囲騒
音レベルによってのみ行なわれていた。Conventionally, the rotation speed of an outdoor fan was controlled based on the ambient noise level, as described in Japanese Patent Application Laid-Open No. 1-239337.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

上記従来技術は、室外ファンの発生するｌｔｆの点には
考慮されているが、幅広い室外温度条件への対応が考慮
されていなかった。例えば、室外温度が低温で、周囲騒
音が犬の場合は、回転数を高くする事になるが、その場
合、冷凍サイクルの吐出圧力が異状低下して圧縮機が故
障しやすくなると言う問題があった。Although the above-mentioned conventional technology takes into consideration the LTF generated by the outdoor fan, it does not take into consideration the response to a wide range of outdoor temperature conditions. For example, if the outdoor temperature is low and the ambient noise is a dog, the rotation speed will be increased, but in that case, the discharge pressure of the refrigeration cycle will drop abnormally, making the compressor more likely to malfunction. Ta.

本発明は室外温度に対して許容される最高回転数を設定
し、その設定値を基本に周囲が静かな場合には室外送風
機を低回転で運転し、近隣への騒音伝搬を押さえ、また
、昼間時のように周囲の騒音が高い場合は、室外ファン
の回転数低下を少なくする事により省エネルギ運転に供
すると共に冷凍サイクルの信頼性を増すことを目的とす
る。The present invention sets the maximum rotational speed permissible for the outdoor temperature, and based on the set value, operates the outdoor fan at low rotational speed when the surroundings are quiet, suppressing noise propagation to the neighborhood, and When ambient noise is high, such as during the daytime, the purpose is to reduce the decrease in the rotational speed of the outdoor fan, thereby contributing to energy-saving operation and increasing the reliability of the refrigeration cycle.

〔課題を解決するための手段〕[Means to solve the problem]

上記目的を散成するために、室外ファンモータ制御回路
に騒音検知手段と室外温度検出手段を設け、検知騒音レ
ベルと室外温度により、ファンモータの回転数を制御で
きる様にしたものである。In order to achieve the above object, the outdoor fan motor control circuit is provided with a noise detection means and an outdoor temperature detection means, so that the rotation speed of the fan motor can be controlled based on the detected noise level and outdoor temperature.

〔作用〕[Effect]

室外温度が低温で室外騒音が犬となり、室外ファンが高
回転になろうとしても、前記室外温度に応じた最高回転
数が設定しであるので、冷凍サイクルの吐出圧力が異状
低圧となる恐れは無い。Even if the outdoor fan tries to rotate at high speed due to low outdoor temperature and excessive outdoor noise, the maximum rotational speed is set according to the outdoor temperature, so there is no possibility that the discharge pressure of the refrigeration cycle will become abnormally low. None.

〔実施例〕〔Example〕

以下、本発明の一実施例を第１図より第３図で説明する
。第１図で空気調和機は圧縮機１．空冷式凝縮器２．室
外ファン２ａ、室外ファンモータ２ｂ、減圧装置３．蒸
発器４．室内ファン４ａ。An embodiment of the present invention will be described below with reference to FIGS. 1 to 3. In Figure 1, the air conditioner is compressor 1. Air-cooled condenser 2. Outdoor fan 2a, outdoor fan motor 2b, pressure reducing device 3. Evaporator 4. Indoor fan 4a.

室内ファンモータ４ｂ、制御袋Ｗ５．音圧センサ６、室
内温度検知用サーミスタ７、外気温度検知用サーミスタ
８で構成され、空冷コンデンサ２は室外ファン２ａ及び
、室外ファンモータ２ｂにより冷却され、蒸発器４は室
内ファン４ａ及び、室内ファンモータ４ｂにより熱交換
される。ここで制御装置５には音圧セン６、外気温度検
知用サーミスタ８．室内温度検知用サーミスタ７が入力
データとして接続されている。Indoor fan motor 4b, control bag W5. It is composed of a sound pressure sensor 6, a thermistor 7 for indoor temperature detection, and a thermistor 8 for outdoor temperature detection.The air-cooled condenser 2 is cooled by an outdoor fan 2a and an outdoor fan motor 2b, and the evaporator 4 is cooled by an indoor fan 4a and Heat is exchanged by the motor 4b. Here, the control device 5 includes a sound pressure sensor 6, an outside temperature detection thermistor 8. A thermistor 7 for indoor temperature detection is connected as input data.

また、第２図に制御装置５内の室外ファンモータ２ｂの
制御部分を示す。室外ファンモータ２ｂの回転数はマイ
コン５ａに外気温度検知用サーミスタ８と音圧センサ６
を入力回路５ｂを介して入力し、室外ファンモータ回転
数制御用に矩形波発生装置５ｃを介して二次電圧を制御
する。この場合、マイコン５ａの制御パターンは第３図
に示すように、室外温度に対する最高回転数レベル■を
基準とし、低騒音時■まで連続的にシフトする。Further, FIG. 2 shows a control portion of the outdoor fan motor 2b within the control device 5. The rotation speed of the outdoor fan motor 2b is determined by a microcomputer 5a, an outside temperature detection thermistor 8, and a sound pressure sensor 6.
is input via the input circuit 5b, and the secondary voltage is controlled via the rectangular wave generator 5c for controlling the rotation speed of the outdoor fan motor. In this case, the control pattern of the microcomputer 5a, as shown in FIG. 3, is based on the maximum rotational speed level (2) with respect to the outdoor temperature, and is continuously shifted to the low noise level (3).

〔発明の効果〕〔Effect of the invention〕

本発明によれば、周囲騒音レベルにより室外ファンの発
生騒音を制御することができ、吐出圧力が広範囲な室外
温度帯で異状低下しないので、低騒音運転が必要な場合
、あるいは不必要な場合に応じて環境問題も含めた最適
な運転状態を実現することが出来る。According to the present invention, the noise generated by the outdoor fan can be controlled based on the ambient noise level, and the discharge pressure does not drop abnormally over a wide range of outdoor temperatures. Accordingly, it is possible to realize optimal operating conditions that also take into account environmental issues.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明の一実施の制御系統図、第２図は制御装
置内のファンモータの制御部のブロック図、第３図は第
２図の外気温と二次電圧、室外ファンモータ回転数の関
係図及び、騒音レベルと二次電圧補正量との関係図であ
る。 １・・・圧縮機、２・・空冷式凝縮器、２ａ・・室外フ
ァン、２ｂ・・・室外ファンモータ、３・・減圧装置、
４・・蒸発器、４ａ・・・室内ファン、４ｂ・室内ファ
ンモータ、５・・制御装置、５ａ・・・マイコン、５ｂ
・・入力回路、５ｃ・・・矩形波発生装置、６・音圧セ
ンサ、７・・・室内温度検知用サーミスタ、８・・・外
気温度検知用サーミスタ。 ／′二Fig. 1 is a control system diagram of one embodiment of the present invention, Fig. 2 is a block diagram of the control unit of the fan motor in the control device, and Fig. 3 is the outside temperature, secondary voltage, and outdoor fan motor rotation shown in Fig. 2. FIG. 2 is a diagram of the relationship between numbers and a diagram of the relationship between the noise level and the amount of secondary voltage correction. 1... Compressor, 2... Air-cooled condenser, 2a... Outdoor fan, 2b... Outdoor fan motor, 3... Pressure reducing device,
4. Evaporator, 4a.. Indoor fan, 4b. Indoor fan motor, 5.. Control device, 5a.. Microcomputer, 5b
... Input circuit, 5c... Rectangular wave generator, 6. Sound pressure sensor, 7. Thermistor for indoor temperature detection, 8. Thermistor for outside temperature detection. /'two

Claims (1)

【特許請求の範囲】 １、空冷コンデンサ用に室外ファンと室外ファンモータ
、前記空冷コンデンサの周囲騒音レベルを検出する騒音
検知手段を装備した、空冷式空気調和機に於いて、 室外空気温度に対して前記室外ファンモータの最高回転
数を設定し、前記周囲騒音レベルに応じて前記最高回転
数より回転数を低下させることを特徴とする空冷式空気
調和機用室外送風機の回転数制御方式。[Claims] 1. In an air-cooled air conditioner equipped with an outdoor fan and an outdoor fan motor for an air-cooled condenser, and a noise detection means for detecting the ambient noise level of the air-cooled condenser, A rotation speed control method for an outdoor blower for an air-cooled air conditioner, characterized in that the maximum rotation speed of the outdoor fan motor is set according to the ambient noise level, and the rotation speed is lowered from the maximum rotation speed according to the ambient noise level.
JP2328952A 1990-11-30 1990-11-30 Rotating speed control method of outdoor fan for air-cooled air-conditioner Pending JPH04203717A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2328952A JPH04203717A (en) 1990-11-30 1990-11-30 Rotating speed control method of outdoor fan for air-cooled air-conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2328952A JPH04203717A (en) 1990-11-30 1990-11-30 Rotating speed control method of outdoor fan for air-cooled air-conditioner

Publications (1)

Publication Number Publication Date
JPH04203717A true JPH04203717A (en) 1992-07-24

Family

ID=18215943

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2328952A Pending JPH04203717A (en) 1990-11-30 1990-11-30 Rotating speed control method of outdoor fan for air-cooled air-conditioner

Country Status (1)

Country Link
JP (1) JPH04203717A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE36169E (en) * 1991-12-26 1999-03-30 Mitsubishi Denki Kabushiki Kaisha Semiconductor memory device
ES2156831A1 (en) * 1999-07-15 2001-07-16 Samsung Electronics Co Ltd Device for controlling the rotation speed of an exterior fan motor for a separated-type air-conditioning unit.
CN109373538A (en) * 2018-11-05 2019-02-22 奥克斯空调股份有限公司 A kind of outdoor fan control method, device and air conditioner
CN111503934A (en) * 2020-04-27 2020-08-07 合肥美菱物联科技有限公司 Refrigeration control method
CN111623420A (en) * 2020-04-26 2020-09-04 海信（山东）空调有限公司 Air conditioner

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE36169E (en) * 1991-12-26 1999-03-30 Mitsubishi Denki Kabushiki Kaisha Semiconductor memory device
ES2156831A1 (en) * 1999-07-15 2001-07-16 Samsung Electronics Co Ltd Device for controlling the rotation speed of an exterior fan motor for a separated-type air-conditioning unit.
CN109373538A (en) * 2018-11-05 2019-02-22 奥克斯空调股份有限公司 A kind of outdoor fan control method, device and air conditioner
CN109373538B (en) * 2018-11-05 2021-01-26 奥克斯空调股份有限公司 Outdoor fan control method and device and air conditioner
CN111623420A (en) * 2020-04-26 2020-09-04 海信（山东）空调有限公司 Air conditioner
CN111623420B (en) * 2020-04-26 2021-08-17 海信（山东）空调有限公司 Air conditioner
CN111503934A (en) * 2020-04-27 2020-08-07 合肥美菱物联科技有限公司 Refrigeration control method

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