JPS62166246A - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JPS62166246A JPS62166246A JP61009109A JP910986A JPS62166246A JP S62166246 A JPS62166246 A JP S62166246A JP 61009109 A JP61009109 A JP 61009109A JP 910986 A JP910986 A JP 910986A JP S62166246 A JPS62166246 A JP S62166246A
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- motor
- voltage characteristic
- heat exchanger
- efficiency
- 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
- 239000003638 chemical reducing agent Substances 0.000 claims description 9
- 239000003507 refrigerant Substances 0.000 claims description 9
- 238000005057 refrigeration Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 abstract description 18
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 230000003247 decreasing effect Effects 0.000 abstract 2
- 239000002826 coolant Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 230000000630 rising effect Effects 0.000 abstract 1
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
- 230000001052 transient effect Effects 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】
産業上の利用分野
本発明は、周波数変換装置により回転数制御される高圧
形の密閉形圧縮機を塔・威した空気調和機に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an air conditioner equipped with a high-pressure hermetic compressor whose rotation speed is controlled by a frequency converter.
従来の技術
従来、電源周波数を無段階に交換し得る周波数変換装置
によすＩＫ幼される高圧形の密閉形圧縮機、四方弁、室
内熱交換器、減圧器および室外熱交換器等から構成され
る空気調和機にあっては、各周波数における圧縮機用電
動機（以下モータと称す）の効率が最高付近となるよう
に周波数と電圧特性が設定されていた。Conventional technology Conventionally, the system consists of a high-pressure hermetic compressor, a four-way valve, an indoor heat exchanger, a pressure reducer, an outdoor heat exchanger, etc., which is powered by a frequency converter that can steplessly exchange the power frequency. In the air conditioner, the frequency and voltage characteristics are set so that the efficiency of the compressor electric motor (hereinafter referred to as the motor) at each frequency is near the maximum.
発明が解決しようさする問題点
このようにモータ効率が最高付近となるように周波数と
電圧特性を設定して圧縮機の回転数制御を行なう場合、
定常運転時においてはモータ入力が少なく運転効率の高
い冷暖房が可能である。しかし、過渡時特に暖房開始時
のように室外熱交換器における吸熱能力が小さく、室内
熱交換器における放熱能力つまり暖房能力の大部分をモ
ータ入力で賄なうような場合にあっては、モータの発熱
１１１、が少ないことから暖房能力も小さく、従って暖
房立上り性能が悪く、その結果温風の吹出しが遅くなっ
ていた。このような理由から、暖房始動時のように冷凍
ブイクルからの供給熱量が不足する場合に、別途室内側
に電気ヒータを設ける等の手段を講じて熱量不足を補な
ったりしていたが、コストや安全性等の点で好ましくな
かった。Problems to be Solved by the Invention When controlling the rotation speed of the compressor by setting the frequency and voltage characteristics so that the motor efficiency is near the maximum,
During steady operation, the motor input is small and heating and cooling with high operating efficiency is possible. However, during transient times, especially when heating starts, when the heat absorption capacity of the outdoor heat exchanger is small and most of the heat dissipation capacity of the indoor heat exchanger, that is, the heating capacity, is covered by the motor input, the motor Since the amount of heat generated 111 is small, the heating capacity is also small, and therefore the heating start-up performance is poor, and as a result, the hot air blows out slowly. For this reason, when the amount of heat supplied from the refrigerating vehicle is insufficient, such as when starting heating, measures such as installing a separate electric heater on the indoor side have been taken to compensate for the lack of heat, but this is costly. It was unfavorable in terms of safety and safety.
本発明は上記問題点に鑑みてなされたもので、始動時に
おいてモータの発熱を積極的に利用し、暖房能力に寄与
する熱量を増大させることによって、速やかに安定した
冷凍サイクルを形成し、始動後短時間で十分な暖房能力
が発揮できる様な空気調和機を提供するものである。The present invention has been made in view of the above-mentioned problems, and by actively utilizing the heat generated by the motor during startup and increasing the amount of heat that contributes to the heating capacity, it quickly forms a stable refrigeration cycle and starts the cycle. To provide an air conditioner that can exert sufficient heating capacity in a short time.
問題点を解決するだめの手段
上記問題点を解決するために本発明の空気調和機は、モ
ータ効率が最６１値となる第１の周波数−電圧特性と１
１１記モーク効率が前記最高値に対して低くなる第２の
周波数−電圧特性を有する周波数変換装置により回転数
制御される高圧形の密閉形圧縮機と四方弁、室内熱交換
器、減圧器、室外熱交換器を順次冷媒配管で接続して冷
凍サイクルを構成し、定常運転時には第１の周波数−電
圧特性に、始動運転時には第２の周波数−電圧特性に切
替える切替装置を設けたものである。Means for Solving the Problems In order to solve the above problems, the air conditioner of the present invention has a first frequency-voltage characteristic in which the motor efficiency reaches a maximum value of 61, and a first frequency-voltage characteristic of 1.
11. A high-pressure hermetic compressor, a four-way valve, an indoor heat exchanger, a pressure reducer, whose rotation speed is controlled by a frequency converter having a second frequency-voltage characteristic in which the moke efficiency is lower than the maximum value; A refrigeration cycle is constructed by sequentially connecting outdoor heat exchangers with refrigerant piping, and is equipped with a switching device that switches to the first frequency-voltage characteristic during steady operation and to the second frequency-voltage characteristic during startup operation. .
作 用
本発明は、上記に示すように９ノ替手段によって始動運
転時にはモータ効率が最高値に対して低くなる第２の周
波数−電圧特性に切替え、モータを低効率で運転しモー
タ発然司を増大させ、この然ｈ１：を暖房能力に利用す
ることによって暖房始動時における速やかな立上りが実
現されることとなる。Function: As shown above, the present invention switches to the second frequency-voltage characteristic in which the motor efficiency is lower than the maximum value during starting operation by the 9 switching means, operates the motor at low efficiency, and controls the motor starting. By increasing h1: and using this h1: for the heating capacity, a quick start-up at the time of starting heating can be realized.
実施例
以下本発明の一実施例の空気調和機について図面を参照
しながら説明する。EXAMPLE Hereinafter, an air conditioner according to an example of the present invention will be described with reference to the drawings.
第１図において、１は高圧形の密閉形圧縮機（以下略し
て圧縮機と称す）、２は四方弁、３は室内熱交換器、４
は減圧器、５は室外熱交換器、６はアキュームレークで
順次冷媒配管１４で接続して冷凍サイクルを構成してい
る。７は室内熱交換器用ファン、８は室外熱交換器用フ
ァンである。In Fig. 1, 1 is a high-pressure hermetic compressor (hereinafter simply referred to as a compressor), 2 is a four-way valve, 3 is an indoor heat exchanger, and 4 is an indoor heat exchanger.
5 is a pressure reducer, 5 is an outdoor heat exchanger, and 6 is an accumulation rake, which are successively connected through refrigerant piping 14 to form a refrigeration cycle. 7 is an indoor heat exchanger fan, and 8 is an outdoor heat exchanger fan.
圧縮機１内部には電！ＶＪｗ、部９（以下モータと称す
）と圧＆ｉ機構部１０とが配設され、モータ９には無段
階に回転数制御４１ケ行なう周波数変換装置１１が接続
さｎている。ところで、周波数変換装置１１には第２図
の実線で示すようにモータ９効率が最高値となる第１の
周波数−電圧特性と破線で示すようにモータ９幼率が前
記最高値に対して低くなる第２の周波数−電圧特性が記
憶されており、周波数変換装置１１に接続されている切
替装置１３により前記第１の周波数−電圧特性か第２の
周波数−電圧特性に切替わるようになっている。There is electricity inside compressor 1! A VJW unit 9 (hereinafter referred to as a motor) and a pressure & i mechanism unit 10 are provided, and the motor 9 is connected to a frequency conversion device 11 that performs stepless rotation speed control. By the way, the frequency converter 11 has a first frequency-voltage characteristic in which the motor 9 efficiency has the highest value, as shown by the solid line in FIG. A second frequency-voltage characteristic is stored, and a switching device 13 connected to the frequency converter 11 switches between the first frequency-voltage characteristic and the second frequency-voltage characteristic. There is.
上記構成において、暖房時空気調和機を長時間停止させ
た後の始動について説明する。In the above configuration, starting the heating air conditioner after it has been stopped for a long time will be described.
今、運転スイッチがオンされると切替装置１３が始動信
号を検知して周波数変換装置１１に対して第２の周波数
−電圧特性に切替え、周波数変換装置１１により所定の
周波数と電圧がモータ９に供給され圧縮機構部１０が回
転運動し始める。Now, when the operation switch is turned on, the switching device 13 detects the starting signal and switches the frequency converter 11 to the second frequency-voltage characteristic, and the frequency converter 11 applies a predetermined frequency and voltage to the motor 9. The compression mechanism section 10 begins to rotate.
このため、暖房運転時に蒸発器となる室外熱交換）居５
及びアキュームレータ６内の冷媒が圧ｋｎ機構部１０で
吸入、８Ｅ縮され、モータ９部を曲って暖房運転時に凝
縮器となる室内熱交換器３へと吐出される。室内熱交換
器３に流入した吐出ガスは、室内熱交換器用ファン７に
より室内空気と熱交換し室内側へ放熱することにより凝
縮液化した後、減圧′ＩｆＪ４によって減圧され気液二
相状態となって室外熱交換器５に流入する。室外熱交換
器５においては室外熱交換器用ファン８による室外空気
からの吸熱が行なわれ、冷媒は蒸発気化してアキューム
レータ６を通って圧縮機１へと吸入される。For this reason, the outdoor heat exchanger, which acts as an evaporator during heating operation, is
The refrigerant in the accumulator 6 is sucked in by the pressure kn mechanism 10, compressed 8E, and is discharged through the motor 9 to the indoor heat exchanger 3 which serves as a condenser during heating operation. The discharged gas that has flowed into the indoor heat exchanger 3 exchanges heat with the indoor air by the indoor heat exchanger fan 7 and radiates heat toward the indoor side, condensing and liquefying the gas.Then, the pressure is reduced by the pressure reduction 'IfJ4, and the gas becomes a gas-liquid two-phase state. and flows into the outdoor heat exchanger 5. In the outdoor heat exchanger 5, heat is absorbed from the outdoor air by the outdoor heat exchanger fan 8, and the refrigerant is evaporated and vaporized and sucked into the compressor 1 through the accumulator 6.
始動時においては、凝縮圧力の上昇が緩やかなため室内
熱交換器３で冷媒が十分に凝縮せず減圧器４人口では気
液二相状態であるため、減圧器４の抵抗が大きく室内熱
交換器３から室外熱交換器５へ移動する冷媒循環量が少
なく、従って室外熱交換器５における吸熱能力も小さく
なる。しかし、木実施例によれは暖房始動時に切替装置
１３により周波数変換装置１１の周波数−電圧特性を第
２の周波数−電圧特性に切替えているため、モータ９が
低効率運転され発熱五ｉか増大している。そして、この
熱量を暖房能力に利用しているため、室外熱交換器５に
おける吸熱量が小きいにもがかわらず、大きな暖房能力
を得ることができるので、始ｌＪ！ＩＪ後短時向で温風
の吹出しが可能である。さらには、従来よりも凝縮圧力
の」二昇が早くなることによるモーク９人カアップ等の
相剰効果も大でぽるＯ
圧縮機１始動後の時間経過とともに、凝縮圧プも上カー
シ室内熱交換器３での凝縮も十分に行なすれ減圧器４人
口での過冷却がとれる項になると、室内熱交換器３から
室外熱交換器５への冷却循用量が増大し吸熱能力が大き
くなり、また、圧縮郁１温度も上昇して定常に近い冷凍
ブイクルが形がされてくる。そこで、始動後一定時間経
過したＭあるいは各部の温度、圧力の検出によって定常
ゼ寒近くなったとみなせる時に、切換装置１３により周
波数変換装置１１０周波数と電圧との関係を第１の周波
数−電圧特性に切替え、以後モータ９効率の高い運転を
続行する。At startup, since the condensing pressure rises slowly, the refrigerant is not sufficiently condensed in the indoor heat exchanger 3 and the pressure reducer 4 is in a gas-liquid two-phase state, so the resistance of the pressure reducer 4 is large and the indoor heat exchange is interrupted. The amount of refrigerant circulated from the heat exchanger 3 to the outdoor heat exchanger 5 is small, and therefore the heat absorption capacity of the outdoor heat exchanger 5 is also small. However, in the wooden embodiment, since the frequency-voltage characteristic of the frequency converter 11 is switched to the second frequency-voltage characteristic by the switching device 13 when heating is started, the motor 9 is operated with low efficiency and the heat generation increases. are doing. Since this amount of heat is used for heating capacity, a large heating capacity can be obtained even though the amount of heat absorbed in the outdoor heat exchanger 5 is small. Warm air can be blown out for a short time after IJ. Furthermore, the condensing pressure rises faster than before, so there is a large mutual effect, such as an increase in moke capacity.As time passes after the compressor 1 is started, the condensing pressure increases and When sufficient condensation occurs in the exchanger 3 and supercooling is achieved in the pressure reducer 4, the amount of cooling circulation from the indoor heat exchanger 3 to the outdoor heat exchanger 5 increases, and the heat absorption capacity increases. In addition, the temperature of the compressor 1 also rises, and a near-steady refrigerated vehicle begins to take shape. Therefore, when it can be assumed that the temperature and pressure of M or various parts are detected after a certain period of time has passed after starting, the switching device 13 changes the relationship between the frequency and voltage of the frequency converter 110 to the first frequency-voltage characteristic. After switching, the motor 9 continues to operate with high efficiency.
発明の効果
以上の二うに本発明の空気調和機は、モータ効率が最高
値となる第１の周波数−電圧特性と前よモータ効率が前
記最高値に対して低くなる第２Ｃ判波数−電圧特性とを
有する周波数変換装置により回転数制御される高圧形の
密閉形圧縮機と四力） 弁、室内熱交換器、減圧器、
室外熱交換器を１１１μ次冷媒配管で接続して冷凍ブイ
クルを構成し、定常ｊ 運転時には第１の周波数−電
圧特性に、始動運転〉 時には第２の周波数−電圧特
性に切替える切替装置を設けたもので、始動運転時にモ
ータを低効率で１ 運転し積極的に発熱量を増大させ
、この熱量を暖： 房能力として利用することにより
冷凍サイクルの、 立上りを速やかなものとし、始動
後短時聞で温風・、 が出てくる様な暖房機を提供す
ることができる。Effects of the Invention As described above, the air conditioner of the present invention has a first frequency-voltage characteristic in which the motor efficiency reaches a maximum value, and a second frequency-voltage characteristic in which the motor efficiency becomes lower than the maximum value. A high-pressure hermetic compressor whose rotation speed is controlled by a frequency converter with four power valves, an indoor heat exchanger, a pressure reducer,
A refrigerating vehicle was constructed by connecting an outdoor heat exchanger with 111μ-order refrigerant piping, and a switching device was installed to switch to the first frequency-voltage characteristic during steady-state operation and to the second frequency-voltage characteristic during starting operation. During starting operation, the motor is operated at low efficiency to actively increase the amount of heat generated, and by using this amount of heat as heating capacity, the refrigeration cycle starts up quickly, reducing the time after startup. We can provide a heater that blows warm air at the same time.
： ４、図面の１７１１屯な説明
第１図は本発明の一実施例による空気調和機の構成図、
第２図は本発明の一実施例における圧縮機用電動機の特
性図である。4. Explanation of the drawings: Figure 1 is a block diagram of an air conditioner according to an embodiment of the present invention;
FIG. 2 is a characteristic diagram of a compressor motor in an embodiment of the present invention.
１・・・・・・密閉形圧縮機、２・川・・四方弁、３・
川・・室内熱交換器、４・−・・・・減圧器、５・・・
・・・室外熱交換器、１１・・・・・・周波＆変換装置
、１３・・・・・・９ノ替装置、： １４・・・・・
・冷媒配管。1... Hermetic compressor, 2. River... four-way valve, 3.
River... Indoor heat exchanger, 4... Pressure reducer, 5...
...Outdoor heat exchanger, 11...Frequency & conversion device, 13...9 replacement device: 14...
・Refrigerant piping.
Claims (1)
記モータ効率が前記最高値に対して低くなる第２の周波
数−電圧特性とを有する周波数変換装置により回転数制
御される高圧形の密閉形圧縮機と四方弁、室内熱交換器
、減圧器、室外熱交換器を順次冷媒配管で接続して冷凍
サイクルを構成し、定常運転時には第１の周波数−電圧
特性に、始動運転時には第２の周波数−電圧特性に切替
える切替装置を設けた空気調和機。A high-pressure sealed type whose rotation speed is controlled by a frequency converter having a first frequency-voltage characteristic in which the motor efficiency becomes a maximum value and a second frequency-voltage characteristic in which the motor efficiency becomes lower than the maximum value. A refrigeration cycle is constructed by sequentially connecting a compressor, a four-way valve, an indoor heat exchanger, a pressure reducer, and an outdoor heat exchanger with refrigerant piping. An air conditioner equipped with a switching device that switches to the frequency-voltage characteristics of
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61009109A JPS62166246A (en) | 1986-01-20 | 1986-01-20 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61009109A JPS62166246A (en) | 1986-01-20 | 1986-01-20 | Air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62166246A true JPS62166246A (en) | 1987-07-22 |
Family
ID=11711458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61009109A Pending JPS62166246A (en) | 1986-01-20 | 1986-01-20 | Air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62166246A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010106807A (en) * | 2008-10-31 | 2010-05-13 | Denso Corp | Electric compressor, heat pump system, and method for controlling the heat pump system |
-
1986
- 1986-01-20 JP JP61009109A patent/JPS62166246A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010106807A (en) * | 2008-10-31 | 2010-05-13 | Denso Corp | Electric compressor, heat pump system, and method for controlling the heat pump system |
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