JPH0450496B2 - - Google Patents
Info
- Publication number
- JPH0450496B2 JPH0450496B2 JP59214504A JP21450484A JPH0450496B2 JP H0450496 B2 JPH0450496 B2 JP H0450496B2 JP 59214504 A JP59214504 A JP 59214504A JP 21450484 A JP21450484 A JP 21450484A JP H0450496 B2 JPH0450496 B2 JP H0450496B2
- Authority
- JP
- Japan
- Prior art keywords
- compressor
- air conditioner
- power supply
- temperature
- voltage
- 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.)
- Expired - Lifetime
Links
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 239000003507 refrigerant Substances 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 description 6
- 238000004804 winding Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000002411 adverse Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004904 shortening 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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、空気調和機における圧縮機の駆動装
置において、特に低温時における暖房立上り時間
の短縮化、および圧縮機の保護に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a drive device for a compressor in an air conditioner, and particularly relates to shortening of heating start-up time at low temperatures and protection of the compressor.
従来例の構成とその問題点
一般に知られているように、空気調和機を低温
時暖房運転する場合、冷媒が圧縮機内の潤滑油中
に溶け込んでしまうため、圧縮機が駆動されても
冷媒循環量がなかなか増加せず、暖房立上り時間
が長くなつたり、さらに、潤滑作用が阻害され、
冷媒の流通を制御する弁等に悪影響を与えること
がある。Conventional configuration and its problems As is generally known, when an air conditioner is operated for heating at low temperatures, the refrigerant dissolves into the lubricating oil in the compressor, so even if the compressor is driven, the refrigerant does not circulate. The amount does not increase easily, the heating start-up time becomes longer, and the lubricating effect is inhibited.
This may have an adverse effect on valves, etc. that control the flow of refrigerant.
このため従来は、上記不具合点を避けるために
圧縮機の近締に別途ヒータを設け、低温時にはこ
のヒータに通電し、圧縮機を外部から加熱し、圧
縮機内部温度が一定値以下にならないよう制御し
ていた。 For this reason, in the past, in order to avoid the above-mentioned problems, a separate heater was installed near the compressor, and when the temperature was low, this heater was energized to heat the compressor from the outside and prevent the internal temperature of the compressor from falling below a certain value. I was in control.
以上のように、従来は、低温時の対策のため、
ヒータが別途必要であり、さらに圧縮機を外部よ
り加熱するため効率が悪く入力が大きいという欠
点があつた。 As mentioned above, conventionally, as a measure against low temperatures,
A separate heater was required, and the compressor was heated externally, resulting in poor efficiency and large input power.
発明の目的
本発明の目的は、インバータにより駆動される
空気調和機の圧縮機駆動装置において、低温時、
何ら特別の加熱手段を設けることなく、圧縮機自
身を内部から効率よく加熱するものである。Purpose of the Invention The purpose of the present invention is to provide a compressor drive device for an air conditioner driven by an inverter.
The compressor itself is efficiently heated from within without providing any special heating means.
発明の構成
上記目的を達成するために本発明は、直流電圧
を発生する手段と、この直流電圧を可変電圧でか
つ可変周波数交流電源に変換する電源変換手段と
前記交流電源により駆動され、空気調和機の冷媒
を循環させる圧縮手段と、前記空気中和機の周囲
環境温度を検知する手段と、任意に入、切の設定
が可能な切換手段とより構成し、低温時でかつ切
換手段が入状態に設定されている場合には、前記
電源交換手段により、通常運転周波数より高周波
の交流電圧を発生させ、圧縮機自身を内部より加
熱し、圧縮機内部温度が一定値以下にならないよ
うにするものである。Composition of the Invention In order to achieve the above object, the present invention provides a means for generating a DC voltage, a power converting means for converting the DC voltage into a variable voltage and variable frequency AC power source, and an air conditioner driven by the AC power source. It consists of a compression means for circulating the refrigerant of the air neutralizer, a means for detecting the ambient temperature of the air neutralizer, and a switching means that can be turned on or off at will. When the compressor is set to the state, the power exchange means generates an AC voltage with a higher frequency than the normal operating frequency, heats the compressor itself from the inside, and prevents the internal temperature of the compressor from falling below a certain value. It is something.
実施例の説明
以下、本発明の一実施例を図面に従つて説明す
る。DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.
第１図において、１は直流電源、２，３，４は
そのコレクタが直流電源１の正側端子に接続され
たトランジスタ、５，６，７はそれぞれそのエミ
ツタが直流電源１の負側端子に接続されたトラン
ジスタで、各々３相ブリツジを構成している。
８，９，１０，１１，１２，１３はフライホイー
ルダイオードで、各々前記トランジスタ２〜７と
並列に接続されている。１４は空気調和機の圧縮
機を駆動する３相モータの固定子巻線、１５，１
６，１７，１８，１９，２０は各々トランジスタ
２，３，４，５，６，７を駆動するドライバ回
路、２１はインバータ駆動信号発生装置、２２は
運転指令装置、２３は空気調和機（図示せず）の
近傍に設けられたサーミスタ、バイメタルスイツ
チなどの温度検知装置、２４は使用者が任意に
入、切の設定が可能な切換装置である。 In Figure 1, 1 is a DC power supply, 2, 3, and 4 are transistors whose collectors are connected to the positive terminal of the DC power supply 1, and 5, 6, and 7 are transistors whose emitters are connected to the negative terminal of the DC power supply 1, respectively. The connected transistors each form a three-phase bridge.
Flywheel diodes 8, 9, 10, 11, 12, and 13 are connected in parallel with the transistors 2 to 7, respectively. 14 is the stator winding of a three-phase motor that drives the compressor of the air conditioner; 15, 1
6, 17, 18, 19, and 20 are driver circuits that drive the transistors 2, 3, 4, 5, 6, and 7, respectively, 21 is an inverter drive signal generator, 22 is an operation command device, and 23 is an air conditioner (Fig. (not shown) is a temperature sensing device such as a thermistor or bimetal switch, and 24 is a switching device that can be turned on or off at will by the user.
通常時の運転パターンは以下の通りである。ま
ず運転指令装置２２により空調負荷に応じた目標
運転回転数信号が出力され、インバータ駆動信号
発生装置２１は圧縮機が上記目標回転数で運転さ
れるよう、ドライバ回路１５〜２０を介して、ト
ランジスタ２〜７にベース駆動信号を出力する。 The normal driving pattern is as follows. First, the operation command device 22 outputs a target operating speed signal corresponding to the air conditioning load, and the inverter drive signal generator 21 sends a signal to the transistor via driver circuits 15 to 20 so that the compressor is operated at the target speed. A base drive signal is output to pins 2 to 7.
この駆動信号を第２図に示す。同図において、
UHはトランジスタ１５のON／OFF状態を表わし
ており、以下同様に、VH、WH、UL、VL、WLは
各々トランジスタ１６，１７，１８，１９，２０
のON／OFF状態を表わし、時間T1は約７〜
33msecである。そしてＨレベルはON状態Ｌレベ
ルはOFF状態を表わす。 This drive signal is shown in FIG. In the same figure,
U H represents the ON/OFF state of the transistor 15, and similarly, V H , W H , U L , V L , and W L represent the transistors 16, 17, 18, 19, and 20, respectively .
represents the ON/OFF state of , and the time T 1 is about 7~
It is 33msec. The H level represents an ON state, and the L level represents an OFF state.
このような駆動信号が与えられるとその結果と
して、固定子巻線１４の各端子間には、第２図に
示されるような３相交流電圧が印加されるので、
圧縮機は所定の回転数で運転する。この制御技術
自体は公知であるため、詳細な説明を省略する。 As a result, when such a drive signal is applied, a three-phase AC voltage as shown in FIG. 2 is applied between each terminal of the stator winding 14.
The compressor operates at a predetermined rotation speed. Since this control technique itself is well known, detailed explanation will be omitted.
一方、圧縮機が停止中、雰囲気温度が低下した
場合には、温度検知装置２３により低温状態が検
知され、さらに切換装置２４が入状態に設定され
ていると、運転指令装置２２よりスタンバイ運転
指令が出力され、インバータ駆動信号発生装置２
１は、ドライバ回路１５〜２０を介して、トラン
ジスタ２〜７へベース駆動信号を出力する。 On the other hand, if the ambient temperature drops while the compressor is stopped, the temperature detection device 23 detects a low temperature state, and if the switching device 24 is set to the ON state, the operation command device 22 issues a standby operation command. is output, and the inverter drive signal generator 2
1 outputs a base drive signal to transistors 2 to 7 via driver circuits 15 to 20.
この駆動信号を第３図に示す。同図において、
UHはトランジスタ１５のON／OFF状態を表わし
ており、以下同様に、VH、WH、UL、VL、WLは
各々トランジスタ１６，１７，１８，１９，２０
のON／OFF状態を表わし、時間T2は約10μsec、
時間T3は約40μsecである。そしてＨレベルはON
状態、ＬレベルはOFF状態を表わす。 This drive signal is shown in FIG. In the same figure,
U H represents the ON/OFF state of the transistor 15, and similarly, V H , W H , U L , V L , and W L represent the transistors 16, 17, 18, 19, and 20, respectively .
represents the ON/OFF state of , time T 2 is approximately 10μsec,
The time T 3 is about 40 μsec. And H level is ON
state, the L level represents the OFF state.
このような駆動信号が与えられるとその結果と
して、固定子巻線１４の各端子間には、第３図に
示されるような交流電圧が印加される。ここで注
意を要するのは、この時の交流電源の周波数の選
定である。ある程度以下の低周波数を選定すると
振動、騒音の発生、または必要以上に入力が大き
くなり過大な温度上昇を招いたり、さらに場合に
よつては圧縮機が回転を開始する等の不具合が発
生する。 As a result, when such a drive signal is applied, an alternating current voltage as shown in FIG. 3 is applied between each terminal of the stator winding 14. What requires attention here is the selection of the frequency of the AC power supply at this time. If a low frequency below a certain level is selected, vibrations and noise will be generated, or the input will be larger than necessary, leading to an excessive temperature rise, and in some cases, problems such as the compressor starting to rotate may occur.
本実施例では、上記不具合点を克服するため、
第３図に示すように、通常運転周波数（30〜150
Hz程度）よりかなり高周波である約25KHzの単相
交流電源を採用している。このような高周波で
は、可聴域をはずれるので騒音も発生せず、また
圧縮機の共振周波数からも大きくはずれるので振
動の発生も押さえられる。さらに固定子巻線１４
のインダクタンス分の影響により、固定子巻線１
４を通つて流れるモータ電流が小さくなり、その
結果入力も低く押さえられ、過大な温度上昇も防
止できるとともに、圧縮機の回転部が回転するこ
ともない。 In this embodiment, in order to overcome the above disadvantages,
As shown in Figure 3, the normal operating frequency (30 to 150
It uses a single-phase AC power supply with a frequency of approximately 25KHz, which is considerably higher than the current frequency (approximately 25KHz). Since such high frequencies are outside the audible range, no noise is generated, and since they are significantly outside the resonant frequency of the compressor, the generation of vibrations can be suppressed. Furthermore, the stator winding 14
Due to the influence of the inductance, stator winding 1
The motor current flowing through the compressor 4 is reduced, and as a result, the input power is kept low, an excessive temperature rise can be prevented, and the rotating part of the compressor does not rotate.
尚、単相交流電源を採用した理由は、装置がシ
ンプルに構成できるとともに入力の低減が計れる
ためである。さらに、切換装置２４を設けた理由
は、使用者が必要に応じてこのスタンバイ機能を
利用できるようにするためのものであり、長期間
空気調和機を運転しない場合などは、不要な電力
消費を押さえるものである。 The reason why a single-phase AC power source was adopted is that the device can be constructed simply and the input power can be reduced. Furthermore, the reason for providing the switching device 24 is to allow the user to use this standby function as needed, and to avoid unnecessary power consumption when the air conditioner is not operated for a long period of time. It is something to hold down.
発明の効果
以上説明したように本発明は、空気調和機にお
ける圧縮機をインバータ装置により可変電圧でか
つ可変周波数交流電源で駆動する構成において、
低温時圧縮機が停止中に、上記交流電源より通常
運転周波数より高周波の交流電源を供給するもの
で、何ら特別な加熱手段を設けることなく、振動
騒音の発生もなく、圧縮機の回転部も回転させる
ことなく、圧縮機内部から加熱し、小さな電力で
圧縮機の保温効果を高めることができ、単純な構
成で、低温時における暖房立上り時間を短縮する
とともに、圧縮機内部の潤滑作用を円滑にし、弁
等を保護する効果を奏するものである。Effects of the Invention As explained above, the present invention provides a configuration in which a compressor in an air conditioner is driven by an inverter device at a variable voltage and by a variable frequency AC power source.
This system supplies AC power with a frequency higher than the normal operating frequency from the AC power source when the compressor is stopped at low temperatures, and does not require any special heating means, generates no vibration or noise, and does not touch the rotating parts of the compressor. Heat is generated from inside the compressor without rotating it, increasing the heat retention effect of the compressor with a small amount of electric power.With a simple configuration, the heating startup time at low temperatures is shortened, and the lubrication effect inside the compressor is smoothed. This has the effect of protecting the valve, etc.
第１図は本発明の一実施例を示す空気調和機に
おける圧縮機の駆動装置の概略回路図、第２図は
同駆動装置における通常運転時のトランジスタ導
通状態とモータに印加される電圧波形を示すタイ
ムチヤート、第３図は同駆動装置における低温時
のトランジスタ導通状態とモータに印加される電
圧波形を示すタイムチヤートである。
１……直流電源、２〜７……トランジスタ、８
〜１３……ダイオード、１４……固定子巻線（圧
縮機）、２１……インバータ駆動信号発生装置、
２３……温度検知装置、２４……切換装置。
Fig. 1 is a schematic circuit diagram of a compressor drive device in an air conditioner showing an embodiment of the present invention, and Fig. 2 shows the transistor conduction state and voltage waveform applied to the motor during normal operation in the same drive device. The time chart shown in FIG. 3 is a time chart showing the transistor conduction state at low temperature in the drive device and the voltage waveform applied to the motor. 1...DC power supply, 2-7...Transistor, 8
~13... Diode, 14... Stator winding (compressor), 21... Inverter drive signal generator,
23...Temperature detection device, 24...Switching device.
Claims (1)
可変電圧でかつ可変周波数交流電源に変換する電
源変換手段と、前記交流電源により駆動され空気
調和機の冷媒を循環せしめる圧縮手段と、この空
気調和機の周囲環境温度を検知する温度検知手段
とより構成され、前記圧縮手段が運転停止中に前
記温度検知手段が低温状態を検知したとき、前記
圧縮手段の可動部分が追従できない通常運転時よ
り高周波数の交流電圧を前記圧縮手段に供給する
ように電源変換手段を制御する制御手段とより構
成された空気調和機の圧縮機駆動装置。1 means for generating a direct current voltage, a power supply converting means for converting the direct current voltage into a variable voltage and variable frequency alternating current power supply, a compression means driven by the alternating current power supply to circulate the refrigerant of the air conditioner, and the air conditioner. and temperature detection means for detecting the ambient temperature of the machine, and when the temperature detection means detects a low temperature state while the compression means is stopped, the temperature is higher than that during normal operation, which the movable parts of the compression means cannot follow. A compressor drive device for an air conditioner, comprising a control means for controlling a power conversion means so as to supply an alternating current voltage of a certain frequency to the compression means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59214504A JPS6191445A (en) | 1984-10-12 | 1984-10-12 | Compressor drive device of air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59214504A JPS6191445A (en) | 1984-10-12 | 1984-10-12 | Compressor drive device of air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6191445A JPS6191445A (en) | 1986-05-09 |
| JPH0450496B2 true JPH0450496B2 (en) | 1992-08-14 |
Family
ID=16656806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59214504A Granted JPS6191445A (en) | 1984-10-12 | 1984-10-12 | Compressor drive device of air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6191445A (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4985723B2 (en) | 2009-07-27 | 2012-07-25 | 三菱電機株式会社 | Air conditioner |
| JP4931970B2 (en) | 2009-08-10 | 2012-05-16 | 三菱電機株式会社 | Air conditioner |
| WO2011074145A1 (en) | 2009-12-17 | 2011-06-23 | 三菱電機株式会社 | Air conditioner |
| WO2012029099A1 (en) | 2010-08-30 | 2012-03-08 | 三菱電機株式会社 | Heat pump device, heat pump system and three-phase inverter control method |
| EP2629029B1 (en) | 2010-10-15 | 2015-09-09 | Mitsubishi Electric Corporation | Heat pump device, heat pump system, and method for controlling three-phase inverter |
| WO2012086010A1 (en) | 2010-12-21 | 2012-06-28 | 三菱電機株式会社 | Heat pump device, heat pump system, and method for controlling three-phase inverter |
| US9077274B2 (en) | 2011-02-07 | 2015-07-07 | Mitsubishi Electric Corporation | Heat pump device, heat pump system, and method for controlling three-phase inverter |
| US9829226B2 (en) | 2011-04-28 | 2017-11-28 | Mitsubishi Electric Corporation | Heat pump device, heat pump system, and method for controlling inverter |
| EP2722613B1 (en) | 2011-06-17 | 2016-08-17 | Mitsubishi Electric Corporation | Heat pump device, air conditioner, and refrigerator |
| EP2763303B1 (en) | 2011-09-30 | 2018-01-24 | Mitsubishi Electric Corporation | Heat pump device, heat pump system, and inverter control method |
| AU2011383457B2 (en) * | 2011-12-14 | 2016-01-14 | Mitsubishi Electric Corporation | Heat pump device, and air conditioner, heat pump/hot-water supply machine, refrigerator, and freezer equipped with same |
| JP5795085B2 (en) | 2012-01-04 | 2015-10-14 | 三菱電機株式会社 | Heat pump device, air conditioner and refrigerator |
| JP5901747B2 (en) | 2012-04-16 | 2016-04-13 | 三菱電機株式会社 | Heat pump device, air conditioner and refrigerator |
| JP5805317B2 (en) | 2012-06-20 | 2015-11-04 | 三菱電機株式会社 | Heat pump device, air conditioner and refrigerator |
| US9746216B2 (en) | 2012-06-29 | 2017-08-29 | Mitsubishi Electric Corporation | Heat pump device, heat pump system, air conditioner, and freezer |
| JP7002958B2 (en) * | 2018-02-15 | 2022-01-20 | 東海旅客鉄道株式会社 | Series multiplex inverter device and its control method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5712245A (en) * | 1980-06-26 | 1982-01-22 | Matsushita Electric Ind Co Ltd | Air conditioner |
| JPS58140571A (en) * | 1982-02-15 | 1983-08-20 | シャープ株式会社 | Control circuit for air conditioner |
-
1984
- 1984-10-12 JP JP59214504A patent/JPS6191445A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5712245A (en) * | 1980-06-26 | 1982-01-22 | Matsushita Electric Ind Co Ltd | Air conditioner |
| JPS58140571A (en) * | 1982-02-15 | 1983-08-20 | シャープ株式会社 | Control circuit for air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6191445A (en) | 1986-05-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |