JPS60133252A - Operation-controlling method for compressor in air conditioner - Google Patents
Operation-controlling method for compressor in air conditionerInfo
- Publication number
- JPS60133252A JPS60133252A JP58242527A JP24252783A JPS60133252A JP S60133252 A JPS60133252 A JP S60133252A JP 58242527 A JP58242527 A JP 58242527A JP 24252783 A JP24252783 A JP 24252783A JP S60133252 A JPS60133252 A JP S60133252A
- Authority
- JP
- Japan
- Prior art keywords
- compressor
- rotating speed
- frequency
- speed range
- 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
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
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
- Air Conditioning Control Device (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、空調負荷に応じて圧縮機の回転数を周波数変
換方式によって制御するようにしたヒートポンプ式空気
調和機の圧縮機運転制御方法に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a compressor operation control method for a heat pump type air conditioner in which the rotation speed of the compressor is controlled by a frequency conversion method according to the air conditioning load.
従来例の構成とその問題点
一般に周波数変換方式で圧縮機の回転数を制御すること
により冷暖房能力調整を行なえるようにした空気調和機
では、第１図に示すように、立上り段階において最大の
運転周波数で圧縮機を高速回転させて、短時間で設定温
度（ａ）に到達させる。Conventional configurations and their problems Generally speaking, in air conditioners that can adjust the heating and cooling capacity by controlling the rotation speed of the compressor using a frequency conversion method, as shown in Figure 1, the maximum The compressor is rotated at high speed at the operating frequency to reach the set temperature (a) in a short time.
この後、例えば冷房時に、室外温度の変化等により空調
負荷が変化して、室温が設定温度（ａ）を所定幅（２）
）上回った場合、圧縮機の運転周波数を下げ、逆に所定
幅−下回った場合には、運転周波数を上げることにより
、空気調和機の冷房能力を上下に調整して設定温度の所
定範囲内に室温が保たれるようにしである。一方、暖房
時には、冷房時と逆の調整をして、同様に室温保持を行
っている。After this, for example, during cooling, the air conditioning load changes due to changes in outdoor temperature, etc., and the room temperature rises below the set temperature (a) by a predetermined width (2).
), the operating frequency of the compressor is lowered, and conversely, when the temperature is below the specified range, the operating frequency is increased to adjust the cooling capacity of the air conditioner up or down to keep it within the specified range of the set temperature. This is to ensure that the room temperature is maintained. On the other hand, during heating, the room temperature is maintained in the same way as during cooling, by making the opposite adjustments.
この周波数変換方式の室温制御は、サーモスタットを使
用した室温制御に比べて、圧縮機の０Ｎ−ＯＥＦ動作が
極めて少なく、圧縮機の再起動からサイクルの安定まで
の動力損失がなくなると共に、室温変化幅が小さく、空
調感覚が良好となる。また、全体としての節電もはから
れる。Compared to room temperature control using a thermostat, this frequency conversion method of room temperature control has extremely little 0N-OEF operation of the compressor, eliminates power loss from restarting the compressor to stabilizing the cycle, and improves room temperature change width. is small, giving you a better feeling of air conditioning. In addition, overall power savings can be achieved.
このような周波数変換方式の空気調和機に用いられる代
表的な圧縮機は、第′２図に示すような構成になってい
る。すなわち、この圧縮機（１）は、主として、密閉容
器（２）に電動機（３）と潤滑油（５）に浸漬された圧
縮要素（４）とを軸方向に並設した構成になっている。A typical compressor used in such a frequency conversion type air conditioner has a configuration as shown in FIG. 2. That is, this compressor (1) mainly has a structure in which an electric motor (3) and a compression element (4) immersed in lubricating oil (5) are arranged side by side in the axial direction in a closed container (2). .
圧縮要素（４）によって圧縮された冷媒は、電動機（３
）と密閉容（社）（２）との間の間隙（６ンを通って密
閉容器（２）の上部空間（７）へ移動し、密閉容器（２
）の上部に配設した配管（８）を介して外部に送り出さ
れる。The refrigerant compressed by the compression element (4) is transferred to the electric motor (3).
) and the closed container (2) through the gap (6) to the upper space (7) of the closed container (2), and the closed container (2)
) is sent out to the outside via a pipe (8) disposed at the top of the pipe.
一方、潤滑油（５）（よ、圧縮要素（４）の中心に位置
する回転軸（９）の下端に取付けたオイルポンプ（１０
によって汲み上げられ、回転軸（９）の内部を軸方向に
延びる通路Ｕυおよびこの通路Ｕυに連通する分路に）
を介して、一部が潤滑を必要とする各摺動部に供給され
る。そして、潤滑油（５）の大部分は、通路０υを経て
上部空間（７）へ放出され、電動機（３）と密閉容器（
２）との間の間隙（６）を通って落下するが、このよう
に落下する潤滑油（５）の量は、回転軸（９）、すなわ
ち圧縮機ｉ１）の回転数に比例して変化し、回転数が増
加すれは落下する潤滑油量も増加し、回転数が減少すれ
ば油量も減少する。On the other hand, an oil pump (10) is attached to the lower end of the rotating shaft (9) located at the center of the lubricating oil (5) (Yo) and the compression element (4).
into a passage Uυ extending axially inside the rotating shaft (9) and a branch communicating with this passage Uυ)
A portion is supplied to each sliding part requiring lubrication via the lubrication. Then, most of the lubricating oil (5) is released into the upper space (7) through the passage 0υ, and the electric motor (3) and the closed container (
The amount of lubricating oil (5) that falls through the gap (6) between However, as the number of rotations increases, the amount of lubricating oil that falls also increases, and as the number of rotations decreases, the amount of oil also decreases.
このように、以上の構成の圧縮機（υでは、電動機（３
）と密閉容器（２〕との間の間隙（６）において冷媒と
潤滑油との移動方向が反対であるため、圧縮機（υの回
転数が大きい場合、冷媒および潤滑油とも量が多く、潤
滑油が上部空間（７）から落下せず、電動機（３）の下
方の空間Ｑ１に存在する潤滑油が極端に少ない状態にな
る。また逆に、圧縮機＋１）の回転数が小さい場合、オ
イルポンプ（ＩＱで充分な潤滑油が汲み上げられず、通
路Ｑｖおよび分路（２）を通って各摺動部に供給される
潤滑油量が極めて少なくなる。In this way, the compressor (υ) with the above configuration has an electric motor (3
) and the sealed container (2), the moving directions of the refrigerant and lubricating oil are opposite, so when the rotation speed of the compressor (υ) is large, the amount of both refrigerant and lubricating oil is large; The lubricating oil does not fall from the upper space (7), and the lubricating oil present in the space Q1 below the electric motor (3) becomes extremely small.On the other hand, when the rotation speed of the compressor +1) is small, The oil pump (IQ) cannot pump up enough lubricating oil, and the amount of lubricating oil supplied to each sliding part through the passage Qv and the shunt (2) becomes extremely small.
従って、いずれの場合でも、各摺動部への憫滑油供給が
正常に行なわれない状態が発生し、このままの状態で圧
縮機の運転を長時間継続すると摺動郡部の焼付きを生ず
る。Therefore, in either case, a situation occurs in which lubricating oil is not normally supplied to each sliding part, and if the compressor continues to operate in this state for a long time, the sliding parts will seize.
ざ゛
以上のように圧縮機では、回転数が大き過ても小さ過ぎ
ても潤滑面から不具合が発生し、ある限られた範囲の回
転数（以下これをゞ常用回転数域′と称し、このような
回転を行なわせるための運転周波数を５常用運転周波数
′と称す）でしか正常な潤滑油供給ができない。そして
、周波数変換方式により圧縮機を運転する場合に、一旦
最高回転数に達してからそれより低い回転数まで下がる
圧縮機の起動時や空調負荷が急激に大きく変化する時な
どは、圧縮機が常用回転数域を経て常用回転数域外の１
つの回転数域から他の回転数域に移行することがあるに
もかかわらず、従来の圧縮機運転制御方法では、圧縮機
が常用回転数域をすぐに通過してしまい、この常用回転
数域における正常な潤滑作用を期待できず、圧縮機の摺
動部が焼付いてしまうという欠点があった。As mentioned above, in a compressor, problems occur due to lubrication when the rotation speed is too high or too low. Normal supply of lubricating oil is possible only at an operating frequency for causing such rotation (referred to as 5 normal operating frequency'). When operating a compressor using the frequency conversion method, when the compressor reaches the maximum rotation speed and then drops to a lower rotation speed, or when the air conditioning load changes suddenly and greatly, the compressor 1 outside the normal rotation speed range after passing through the normal rotation speed range
Despite the fact that there may be a transition from one rotational speed range to another, with conventional compressor operation control methods, the compressor quickly passes through the normal rotational speed range. The problem was that normal lubrication could not be expected in the compressor, and the sliding parts of the compressor would seize.
発明の目的
本発明は、上記従来の欠点を解消するもので、圧縮機の
起動時や空調負荷が大きく変化する時に、圧縮機が常用
回転数域を経て常用回転数域外の１つの回転数域から他
の回転数域に移行することを利用して、この移行時間の
間に圧縮機の潤滑を充分行なうことにより圧縮機の保護
をはかることができる空気調和機の圧縮機運転制御方法
を提供す乙ことを目的とする。Purpose of the Invention The present invention solves the above-mentioned conventional drawbacks.When the compressor starts up or when the air conditioning load changes significantly, the compressor passes through the normal rotation speed range and then changes to one rotation speed range outside the normal rotation speed range. Provided is a compressor operation control method for an air conditioner that can protect the compressor by sufficiently lubricating the compressor during this transition time by utilizing the transition from one rotation speed range to another rotation speed range. The purpose is to be very helpful.
発明の構成
本発明は、上記目的を達成するために、周波数変換によ
り回転数が変化さ１、常用回転数域で運転されている時
に正常な潤滑が行なわれる圧縮機を、周波数制御装置に
より空調負荷に応じて決定される周波数で運転させる際
に、前記圧縮機の回転数が前記常用回転数域を経て常用
回転数域外の１つの回転数域から他の回転数域へ変化す
る場合、前記周波数制御装置が、前記圧縮機を前記常用
回転数域で運転させるための運転周波数を一定時間以上
供給するようにした空気調和機の圧縮機運転制御方法を
提供する。SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides air conditioning using a frequency control device for a compressor whose rotational speed is changed by frequency conversion (1) and which is normally lubricated when operating in a normal rotational speed range. When operating at a frequency determined according to the load, if the rotation speed of the compressor changes from one rotation speed range outside the normal rotation speed range to another rotation speed range through the normal rotation speed range, Provided is a compressor operation control method for an air conditioner, in which a frequency control device supplies an operating frequency for operating the compressor in the normal rotation speed range for a certain period of time or more.
実施例の説明
以下、本発明の一実施例を、第３図に基づいて説明する
。DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG.
第８図において、圧縮機（１）、室内側熱交換器（１荀
。In Fig. 8, a compressor (1) and an indoor heat exchanger (1 unit) are shown.
室外側熱交換器（至）、および膨張弁（ｌによって冷凍
サイクルを構成し、空気調和を行っている。室内側熱交
換器ａ４には感温センサａηおよび圧力センサ（至）が
配設されており、感温センサ０７ｐにより検出された信
号（へ）を周波数制御装置αｑの周波数設定ユニット（
イ）に供給し、ここで設定室温に対するチェックを行な
う。周波数制御装置部は、さらに、周波数設定ユニット
（４）にコントロールされる周波数変換ユニット０υを
備えており、この周波数変換ユニットＱＩ）は周波数設
定ユニット四からの指令に応じて、電源端子に）から入
力された一般商用電源を必要とする運転周波数に変換し
て圧縮機（１）に印加し、これを運転する。The outdoor heat exchanger (to) and the expansion valve (l) constitute a refrigeration cycle and perform air conditioning.The indoor heat exchanger a4 is equipped with a temperature sensor aη and a pressure sensor (to). The signal detected by the temperature sensor 07p is sent to the frequency setting unit (to) of the frequency control device αq.
b) and check the set room temperature here. The frequency control unit further includes a frequency conversion unit 0υ controlled by the frequency setting unit (4), and this frequency conversion unit (QI) converts the voltage from the power supply terminal (QI) to The input general commercial power is converted to the required operating frequency and applied to the compressor (1) to operate it.
以上の構成の空気調和機において、いま空調負荷が小さ
い（暖房時は、室外温度が高（、設定室温が低い状態で
、冷房時は、室外温度が低く、設定室温が高い状態）条
件下で空調を開始するものとすると、始動時に圧縮機１
ｉ）が最高回転数（周波数変換ユニットＱ］）からの最
高運転周波数）まで一旦上昇した後、感温センサ（１７
）が室内側熱交換器９→の吹出し温度を検知し、これを
信号（へ）として周波数設定ユニット四へ送る。信号（
へ）を受けた周波数設定ユニット翰は、これを設定室温
と対比し、その差に応じた周波数減少指令（ト）を周波
数変換ユニットＣ２］）に発信し、これを受けた周波数
変換ユニットＩ２υは、電源端子に）から入力された電
源を徐々に減少する運転周波数−に変換して圧縮機（す
に供給し、その回転数を小さな空調負荷に対応した常用
回転数域以下の回転数まで減少させる。In the air conditioner with the above configuration, the air conditioning load is currently low (during heating, the outdoor temperature is high (and the set room temperature is low), and during cooling, the outdoor temperature is low and the set room temperature is high). When starting air conditioning, compressor 1
i) once increases to the maximum rotational speed (maximum operating frequency from the frequency conversion unit Q]), the temperature sensor (17
) detects the outlet temperature of the indoor heat exchanger 9→, and sends this as a signal to the frequency setting unit 4. signal(
The frequency setting unit 翰 that received this compares it with the set room temperature and sends a frequency reduction command (g) according to the difference to the frequency conversion unit C2]), which receives this and the frequency conversion unit I2υ Converts the power input from the power terminal (to the power supply terminal) into a gradually decreasing operating frequency and supplies it to the compressor (sun), reducing its rotation speed to a rotation speed below the normal rotation speed range corresponding to small air conditioning loads. let
しかしながら、圧縮機（１）の回転数が上述のように減
少する過程で、一旦運転周波数−が常用運転周波数域に
突入することから、本実施例では、周波数設定ユニット
に）が、常用運転周波数域への突入時点から、一定時間
の局周波数保持指令（ト）を発信し、これを受けた周波
数変換ユニット（４１）はその間常用運転周波数域の運
転周波数を維持するので、圧縮機（υの潤滑がこの時に
正常に行なわれ、焼付きが防止される。However, in the process in which the rotational speed of the compressor (1) decreases as described above, the operating frequency - once enters the normal operating frequency range, so in this embodiment, the frequency setting unit From the point of entry into the range, the frequency conversion unit (41) transmits a station frequency holding command (g) for a certain period of time, and upon receiving this command, maintains the operating frequency in the normal operation frequency range, so the compressor (υ) At this time, lubrication occurs properly and seizure is prevented.
発明の詳細
な説明したように、本発明による空気調和機の圧縮機運
転制御方法では、圧縮機が常用回転数域を経て常用回転
数域外の１つの回転数域からめ他の回転数域に変化する
場合、圧縮機を常用回転数域で運転するための運転周波
数を一定時間以上供給するようにしであるので、この間
をζ圧シ＠機の潤滑が充分行なわれ、圧縮機が保護され
る。As described in detail of the invention, in the method for controlling the compressor operation of an air conditioner according to the present invention, the compressor changes from one rotation speed range outside the normal rotation speed range to another rotation speed range through the normal rotation speed range. In this case, the operating frequency for operating the compressor in the normal rotational speed range is supplied for a certain period of time or more, so the ζ-pressure machine is sufficiently lubricated during this period, and the compressor is protected.
第１図は周波数変換方式による室温制御の一般的な状態
を示すグラフ、第２図は代表的な公知の圧縮機を示す断
面図、第８図は本発明の一実施例を示す概略構成図であ
る。
（す・・・圧縮機、０ト・・周波数制御装置代理人 森
本 義 弘
第７図
第３図Fig. 1 is a graph showing a general state of room temperature control using a frequency conversion method, Fig. 2 is a sectional view showing a typical known compressor, and Fig. 8 is a schematic configuration diagram showing an embodiment of the present invention. It is. (S... Compressor, 0... Frequency control device agent Yoshihiro Morimoto Figure 7 Figure 3
Claims (1)
数域で運転されている時′に正常な潤滑が行なわれる圧
縮機を、周波数制御装置により空調負荷に応じて決定さ
れる周波数で運転させる際に、前記圧縮機の回転数が前
記所定回転数域を経て前記所定回転数域外の１つの回転
数域から他の回転数域へ変化する場合、前記周波数制御
装置が、前記圧縮機を前記所定回転数域で運転させるた
めの運転周波数を一定時間以上供給するようにした空気
調和機の圧縮機運転制御方法。1. The rotation speed is changed by frequency conversion, and the compressor, which is normally lubricated when operating in a predetermined rotation speed range, is operated at a frequency determined by the frequency control device according to the air conditioning load. In this case, when the rotation speed of the compressor changes from one rotation speed range to another rotation speed range outside the predetermined rotation speed range through the predetermined rotation speed range, the frequency control device controls the compressor to A compressor operation control method for an air conditioner that supplies an operating frequency for a predetermined period of time or longer to operate in a predetermined rotation speed range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58242527A JPS60133252A (en) | 1983-12-21 | 1983-12-21 | Operation-controlling method for compressor in air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58242527A JPS60133252A (en) | 1983-12-21 | 1983-12-21 | Operation-controlling method for compressor in air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60133252A true JPS60133252A (en) | 1985-07-16 |
Family
ID=17090436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58242527A Pending JPS60133252A (en) | 1983-12-21 | 1983-12-21 | Operation-controlling method for compressor in air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60133252A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10139144B2 (en) | 2014-12-15 | 2018-11-27 | Daikin Industries, Ltd. | Air conditioning apparatus |
| CN113108436A (en) * | 2021-04-07 | 2021-07-13 | 广东美的制冷设备有限公司 | Portable air conditioner, control method and device thereof and storage medium |
-
1983
- 1983-12-21 JP JP58242527A patent/JPS60133252A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10139144B2 (en) | 2014-12-15 | 2018-11-27 | Daikin Industries, Ltd. | Air conditioning apparatus |
| CN113108436A (en) * | 2021-04-07 | 2021-07-13 | 广东美的制冷设备有限公司 | Portable air conditioner, control method and device thereof and storage medium |
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