JPS6358051A - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JPS6358051A JPS6358051A JP61203353A JP20335386A JPS6358051A JP S6358051 A JPS6358051 A JP S6358051A JP 61203353 A JP61203353 A JP 61203353A JP 20335386 A JP20335386 A JP 20335386A JP S6358051 A JPS6358051 A JP S6358051A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- operating frequency
- indoor
- compressor
- outdoor
- 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
- 238000005057 refrigeration Methods 0.000 claims description 9
- 230000009467 reduction Effects 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract 1
- 239000003507 refrigerant Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 230000007423 decrease Effects 0.000 description 5
- 238000001816 cooling Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
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
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
この発明は、能力可変圧縮機を岡えた空気調和機に関す
る。[Detailed Description of the Invention] [Object of the Invention] (Field of Industrial Application) This invention relates to an air conditioner equipped with a variable capacity compressor.
（従来の技術）
空気調和機にあっては、能力可変圧縮機、至外熱交換器
、減圧装置たとえばｒＭ張弁、全内熱交換器などを順次
連通してなる冷凍サイクルを備え、前記圧縮機の運転周
波数（インバータ回路の出力周波数）を室内温度と設定
温度との差（負荷）に応じて制御することにより、その
負荷に対応する最適な能力を得、快適性の向上および省
エネルギ効果の向上を図るものがある。なお、第６図は
圧縮機の運転周波数Ｆの変化の一例であり、負荷が小さ
くなるに従って運転周波数Ｆが低減していく様子を示し
ている。(Prior Art) An air conditioner is equipped with a refrigeration cycle in which a variable capacity compressor, an external heat exchanger, a pressure reducing device such as an rM expansion valve, a total internal heat exchanger, etc. are connected in sequence, and the By controlling the operating frequency of the machine (output frequency of the inverter circuit) according to the difference (load) between the indoor temperature and the set temperature, the optimum capacity can be obtained to handle the load, improving comfort and saving energy. There are things that aim to improve. Note that FIG. 6 is an example of changes in the operating frequency F of the compressor, and shows how the operating frequency F decreases as the load decreases.
しかしながら、たとえば暖房運転時、初めは室内温度が
低いため圧縮機の運転周波数が高められて高能力運転が
行なわれるが、このとき室外温度が高ければ不要な高能
力運転がなされることになり、省エネルギ効果を損って
しまう。しかも、このような不要な高能力運転は、圧縮
機を始めとする冷凍サイクル機器に不要な負荷をかけ、
その耐久性に悪影響を与える。However, for example, during heating operation, the operating frequency of the compressor is increased and high capacity operation is performed because the indoor temperature is initially low, but if the outdoor temperature is high at this time, unnecessary high capacity operation is performed. This will impair the energy saving effect. Moreover, such unnecessary high-capacity operation places an unnecessary load on the refrigeration cycle equipment including the compressor.
adversely affecting its durability.
（発明が解決しようとする問題点）
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、不要な高能力運転を防ぐこと
ができ、これにより省エネルギ効果の向上が図れ、しか
も圧１Ｊｉｉ機を始めとする冷凍サイクル機器の耐久性
向上をも可能とする空気調和例を提供することにある。(Problems to be solved by the invention) This invention was made in view of the above circumstances.
The purpose of this is to prevent unnecessary high-capacity operation, thereby improving energy-saving effects, and improving the durability of refrigeration cycle equipment such as pressure 1Jii machines. The purpose is to provide examples.
［発明の構成］ （問題点を解決するための手段） 能力可変圧縮機、室外熱交換器、減圧装置。[Structure of the invention] (Means for solving problems) Variable capacity compressor, outdoor heat exchanger, pressure reduction device.
室内熱交換器などを順次連通してなる冷凍サイクルを備
え、負荷に応じて前記圧縮機の運転周波数を制御する空
気調和機において、室外温度を検知する手段を設けると
ともに、この検知温度に応じて前記圧縮機の最大許容運
転周波数を設定する手段を設ける。In an air conditioner equipped with a refrigeration cycle formed by sequentially communicating an indoor heat exchanger, etc., and controlling the operating frequency of the compressor according to the load, a means for detecting the outdoor temperature is provided, and a means for detecting the outdoor temperature is provided. Means are provided for setting a maximum allowable operating frequency of the compressor.
（作用）
室外温度に応じて圧縮機の許容最大運転周波数が定まる
。(Function) The maximum allowable operating frequency of the compressor is determined according to the outdoor temperature.
（実施例）
以下、この発明の一実籠例について図面を参照して説明
する。(Example) Hereinafter, an example of a basket according to the present invention will be described with reference to the drawings.
第１図に示すように、能力可変圧縮機１、四方弁２、室
外熱交換器３、減圧装置たとえば膨張弁４、室内熱交換
器５が順次連通され、ヒートポンプ式冷凍サイクルが構
成される。すなわち、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、学外熱交換
器３が凝縮器、室内熱交換器５が蒸発器として作用する
。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、室内熱交換器５が凝縮器、室外熱交換器３が蒸発器
として作用する。そして、室外熱交換器３の近傍に室外
ファン６、室内熱交換器５の近傍に室内ファン７が配設
される。また、圧ｔ！ ｌ：Ｊ！ １の吐出側冷媒バイ
ブに温度センサ８が取付けられる。As shown in FIG. 1, a variable capacity compressor 1, a four-way valve 2, an outdoor heat exchanger 3, a pressure reducing device such as an expansion valve 4, and an indoor heat exchanger 5 are successively connected to form a heat pump type refrigeration cycle. That is, during cooling operation, the refrigerant flows in the direction of the solid arrow in the figure to form a cooling cycle, and the off-campus heat exchanger 3 acts as a condenser and the indoor heat exchanger 5 acts as an evaporator. During heating operation, the four-way valve 2 switches to cause the refrigerant to flow in the direction of the dashed arrow in the figure to form a heating cycle, with the indoor heat exchanger 5 acting as a condenser and the outdoor heat exchanger 3 acting as an evaporator. . An outdoor fan 6 is provided near the outdoor heat exchanger 3, and an indoor fan 7 is provided near the indoor heat exchanger 5. Also, pressure t! l:J! A temperature sensor 8 is attached to the discharge side refrigerant vibrator 1.
１０は制御部で、マイクロコンピュータおよびその周辺
回路などからなり、外部に室内温度設定回路１１、室内
温度センサ１２、室外温度センサ１３、インバータ回路
１４が接続される。。ここで、寮内温度設定回路１１は
、運転操作部（図示しない）の操作に基づく空内股定温
度情報を出力するものである。室内温度センサ１２は、
室内温度を検知するちのである。室外温度センサ１３は
室外温度を検知するものである。インバータ回路１４は
、交流電源電圧を直流に変換し、それを制御部１０から
の周波数設定信号に応じた所定周波数の交流電圧に変換
し、圧縮機モータ １Ｍに供給するものである。そして
、制御部１０は、室内温度設定回路１１からの夏向股定
温度情報の内容と学内温度センサ１２の検知温度との差
を演弾する演算手段２１、この演輝手１２１の演算結果
にｍ適な運転周波数ゾーンを判断するゾーン判断手段２
２、室外温度センサ１３の検知温度および温度センサ８
の検知温度に応じた運転周波数設定データを発する周波
数設定手段２３、この周波数設定手９２３からの運転周
波数設定データおよび上記ゾーン判断手段２２の判断結
果に応じた周波数設定信号を出力する圧力手段２４を有
している。Reference numeral 10 denotes a control section, which includes a microcomputer and its peripheral circuits, and is externally connected to an indoor temperature setting circuit 11, an indoor temperature sensor 12, an outdoor temperature sensor 13, and an inverter circuit 14. . Here, the dormitory temperature setting circuit 11 outputs indoor temperature setting information based on the operation of a driving operation section (not shown). The indoor temperature sensor 12 is
It detects the indoor temperature. The outdoor temperature sensor 13 detects the outdoor temperature. The inverter circuit 14 converts the AC power supply voltage into DC, converts it into an AC voltage of a predetermined frequency according to the frequency setting signal from the control unit 10, and supplies the AC voltage to the compressor motor 1M. Then, the control unit 10 operates a calculation means 21 that calculates the difference between the content of summer setting temperature information from the indoor temperature setting circuit 11 and the temperature detected by the campus temperature sensor 12, and uses the calculation result of the calculation unit 121 as a calculation means. Zone determination means 2 for determining an appropriate operating frequency zone
2. Detection temperature of outdoor temperature sensor 13 and temperature sensor 8
a frequency setting means 23 that outputs operating frequency setting data according to the detected temperature of the frequency setting means 923; and a pressure means 24 that outputs a frequency setting signal according to the operating frequency setting data from the frequency setting hand 923 and the determination result of the zone determining means 22. have.
つぎに、上記のような構成において作用を説明する。Next, the operation in the above configuration will be explained.
運転操作部で暖房運転を設定するとともに、所望の室内
温度を設定し、かつ運転開始操作を行なう。すると、制
御部１０は、インバータ回路１４を駆動じ、圧縮機１を
起動する。また、制御部１０は、四方弁２を切換作動す
るとともに、室外ファン６および室内ファン７をそれぞ
れ起動する。The heating operation is set using the operation control unit, a desired indoor temperature is set, and the operation is started. Then, the control unit 10 drives the inverter circuit 14 and starts the compressor 1. Further, the control unit 10 switches the four-way valve 2 and starts the outdoor fan 6 and the indoor fan 7, respectively.
こうして、圧縮機１が起動し、かつ四方弁２が切換作動
すると、暖房サイクルが形成され、１１！房運転が開始
となる。In this way, when the compressor 1 is started and the four-way valve 2 is switched, a heating cycle is formed, and 11! Facility operation begins.
この＠房運転時、制御部１０は演緯手ｆ′２２１および
ゾーン判断手段２２により、室内設定温度と室内温度と
の差に対応する運転周波数ゾーンを判断し、その判Ｉｆ
ｌｉ結果に対応する周波数設定信号を出力手段２４から
出力せしめる。こうして、圧縮機１の運転周波数が決定
され、室内設定温度と室内温度との差に対応する能力の
運転が行なわれる。During this @room operation, the control unit 10 uses the operator f'221 and the zone determining means 22 to determine the operating frequency zone corresponding to the difference between the indoor temperature setting and the indoor temperature, and determines if
A frequency setting signal corresponding to the li result is output from the output means 24. In this way, the operating frequency of the compressor 1 is determined, and the compressor 1 is operated at a capacity corresponding to the difference between the indoor set temperature and the indoor temperature.
ただし、制Ｕｌ１部１０は、周波数設定手段２３により
、室外温度センサ１３の検知温度に応じた最大許容運転
周波数Ｆａを設定し、その最大許容運転周波数Ｆａによ
って運転周波数の規制を行なう。すなわち、周波数設定
手段２３は第２図に示ず最大許容運転周波数設定条件を
記憶しており、それに基づいて最大許容運転周波数ｌｅ
ａを設定する。この場合の最大許容運転周波数Ｆａは、
暖房性、室外温度が高くなるに従って低くなる。また、
冷房時は、室外温度が低くなるに従って低くなる。However, the control Ul1 section 10 uses the frequency setting means 23 to set the maximum allowable operating frequency Fa according to the temperature detected by the outdoor temperature sensor 13, and regulates the operating frequency based on the maximum allowable operating frequency Fa. That is, the frequency setting means 23 stores a maximum allowable operating frequency setting condition (not shown in FIG. 2), and based on the setting condition, the maximum allowable operating frequency le
Set a. The maximum allowable operating frequency Fa in this case is
Heating properties: As the outdoor temperature increases, the temperature decreases. Also,
During cooling, the temperature decreases as the outdoor temperature decreases.
したがって、第３図に示すように、暖房運転の開始時の
ように室内設定温度と室内温度との差が大きい場合でも
、室外温度が高ければ実際の運転周波数Ｆは低く抑えら
れる。つまり、不要な高能力運転が回避される。Therefore, as shown in FIG. 3, even when the difference between the indoor set temperature and the indoor temperature is large, such as at the start of heating operation, the actual operating frequency F can be kept low if the outdoor temperature is high. In other words, unnecessary high-capacity operation is avoided.
このように、不要な高能力運転を回避することにより、
省エネルギ効果の向上が図れる。しかも、圧縮機やその
曲の冷凍サイクル機器に対する負荷を軽減することがで
き、その耐久性向上が図れる。In this way, by avoiding unnecessary high-capacity operation,
The energy saving effect can be improved. Moreover, the load on the compressor and its refrigeration cycle equipment can be reduced, and its durability can be improved.
また、制御部１０は、周波数設定手段２３により、温度
センサ８の検知温度つまり吐出冷媒パイプの温度を監視
しており、そのパイプ温度が設定温度を超えると運転周
波数Ｆを低運転周波数Ｆｂに下げる。これは、圧縮機１
や冷媒の異常温度上昇（過熱）を抑制するものであり、
従来のバイメタルサーモによる圧縮機のオン、オフを行
なう場合（第４図に破線で示す）に比べて室内温度の変
動が小さくなるという利点がある。しかも、圧縮機がオ
ン、オフしないので、その圧縮機の再起動用電力が不要
であり、結果的に消費電力の低減が弱れ、前述した省エ
ネルギ効果の向上に大きく貢献することができる。The control unit 10 also monitors the temperature detected by the temperature sensor 8, that is, the temperature of the discharge refrigerant pipe, by the frequency setting means 23, and when the pipe temperature exceeds the set temperature, lowers the operating frequency F to a low operating frequency Fb. . This is compressor 1
It suppresses abnormal temperature rise (overheating) of refrigerant and refrigerant.
Compared to the case where the compressor is turned on and off using a conventional bimetal thermostat (indicated by broken lines in FIG. 4), this has the advantage that fluctuations in indoor temperature are smaller. Moreover, since the compressor does not turn on or off, power for restarting the compressor is not required, and as a result, the reduction in power consumption is weakened, making it possible to greatly contribute to the improvement of the above-mentioned energy saving effect.
なお、上記実施例では、最大許容運転周波数を室外温度
に応じて直線的に変化させる場合を例に上げて説明した
が、段階的に変化させるようにしてもよい。さらに、室
外温度を室外温度センサ１３によって直接的に検知する
ようにしたが、たとえば除霜用の熱交温度センサを備え
ている場合にはその熱交温度センサの検知温度つまり室
外熱交換器の温度によって間接的に室外温度を検知する
ようにしてもよい。この場合、運転開始前の室外温度に
応じた最大許容運転周波￥ＩＦａが運転終了までそのま
ま続くことになる。In the above embodiment, the maximum allowable operating frequency is changed linearly according to the outdoor temperature, but the maximum allowable operating frequency may be changed stepwise. Furthermore, although the outdoor temperature is directly detected by the outdoor temperature sensor 13, for example, if a heat exchanger temperature sensor for defrosting is provided, the detected temperature of the heat exchanger temperature sensor, that is, the temperature of the outdoor heat exchanger. The outdoor temperature may be detected indirectly based on the temperature. In this case, the maximum allowable operating frequency ¥IFa corresponding to the outdoor temperature before the start of operation will continue until the end of operation.
また、温度センサ８を吐出側冷媒パイプに取付けるよう
にしたが、圧縮機１のケーシングに取付けるようにして
もよい。さらに、温度センサ８の検知温度に対する設定
温度を一段としたが、それに限らず複数段たとえば二段
とし、それに伴い第５図に示すように運転周波数Ｆの低
減値をＦｂｌ。Moreover, although the temperature sensor 8 is attached to the discharge side refrigerant pipe, it may be attached to the casing of the compressor 1. Further, although the set temperature relative to the temperature detected by the temperature sensor 8 is set to one stage, the set temperature is not limited to this, but is set to multiple stages, for example, two stages, and accordingly, as shown in FIG. 5, the reduction value of the operating frequency F is set to Fbl.
Ｆｂ２の二段としてもよい。It is also possible to have two stages of Fb2.
そのた、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である。Furthermore, the present invention is not limited to the above-mentioned embodiments, and can be modified in various ways without changing the gist.
［発明の効果］
以上述べたようにこの発明によれば、室外温度を検知す
る手段を設けるとともに、この検知温度に応じて前記圧
縮機の最大許容運転周波数を設定する手段を設けたので
、不要な高能力運転を防ぐことができ、これにより省エ
ネルギ効果の向上が図れ、しかも圧縮機を始めとする冷
凍サイクル握器の耐久性向上をも可能とする空気調和間
を提供できる。[Effects of the Invention] As described above, according to the present invention, a means for detecting the outdoor temperature is provided, and a means for setting the maximum allowable operating frequency of the compressor according to the detected temperature is provided, so that unnecessary This makes it possible to prevent high-capacity operation, thereby improving energy-saving effects, and providing an air conditioning system that also makes it possible to improve the durability of refrigeration cycle equipment including the compressor.
第１図はこの発明の一実施例における冷凍サイクルおよ
び制御回路の構成を示す図、第２図は同実施例における
最大許容運転周波数設定条件を示す図、第３図は同実施
例の最大許容運転周波数１”ａに基づく作用を説明する
ための図、第４図は同実施例の吐出側冷媒パイプの温度
に基づく作用を説明するための図、第５図は同実膿例の
変形例 ′の作用を説明するための図、第６図は従来に
おける運転周波数制御の一例を示す図である。
１・・・能力可変圧縮機、３・・・室外熱交換器、５・
・・夏向熱交換器、１０・・・制御部、１４・・・イン
バータ回路。
出願人代理人 弁理士 鈴江武彦
室外１度−
第２図
第３図
時間□
第４図
時間−
第６図Fig. 1 is a diagram showing the configuration of a refrigeration cycle and control circuit in an embodiment of the present invention, Fig. 2 is a diagram showing the maximum allowable operating frequency setting conditions in the embodiment, and Fig. 3 is a diagram showing the maximum allowable operating frequency setting conditions in the embodiment. A diagram for explaining the action based on the operating frequency of 1"a, FIG. 4 is a diagram for explaining the action based on the temperature of the discharge side refrigerant pipe of the same embodiment, and FIG. 5 is a modification of the same example. 6 is a diagram showing an example of conventional operation frequency control. 1... variable capacity compressor, 3... outdoor heat exchanger, 5...
... Summer heat exchanger, 10... Control section, 14... Inverter circuit. Applicant's representative Patent attorney Takehiko Suzue 1st degree - Figure 2 Figure 3 Time □ Figure 4 Time - Figure 6
Claims (1)
器などを順次連通してなる冷凍サイクルを備え、負荷に
応じて前記圧縮機の運転周波数を制御する空気調和機に
おいて、室外温度を検知する手段と、この検知温度に応
じて前記圧縮機の最大許容運転周波数を設定する手段と
を具備したことを特徴とする空気調和機。An air conditioner is equipped with a refrigeration cycle in which a variable capacity compressor, an outdoor heat exchanger, a pressure reduction device, an indoor heat exchanger, etc. are connected in sequence, and the operating frequency of the compressor is controlled according to the load. An air conditioner comprising: means for detecting temperature; and means for setting a maximum allowable operating frequency of the compressor according to the detected temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61203353A JPS6358051A (en) | 1986-08-29 | 1986-08-29 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61203353A JPS6358051A (en) | 1986-08-29 | 1986-08-29 | Air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6358051A true JPS6358051A (en) | 1988-03-12 |
Family
ID=16472623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61203353A Pending JPS6358051A (en) | 1986-08-29 | 1986-08-29 | Air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6358051A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03101275U (en) * | 1990-02-02 | 1991-10-22 | ||
| US7509816B2 (en) | 2004-01-15 | 2009-03-31 | Toshiba Carrier Corporation | Air conditioner |
-
1986
- 1986-08-29 JP JP61203353A patent/JPS6358051A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03101275U (en) * | 1990-02-02 | 1991-10-22 | ||
| US7509816B2 (en) | 2004-01-15 | 2009-03-31 | Toshiba Carrier Corporation | Air conditioner |
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