JPH09264590A - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JPH09264590A JPH09264590A JP8075771A JP7577196A JPH09264590A JP H09264590 A JPH09264590 A JP H09264590A JP 8075771 A JP8075771 A JP 8075771A JP 7577196 A JP7577196 A JP 7577196A JP H09264590 A JPH09264590 A JP H09264590A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- heat exchanger
- indoor heat
- time
- air conditioner
- 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.)
- Granted
Links
Landscapes
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
- Air Conditioning Control Device (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は四方切換弁を備えた
空気調和機に関し、特に四方切換弁の切換後の冷房サイ
クル、暖房サイクルの判定を確実に行い得る空気調和機
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner having a four-way switching valve, and more particularly to an air conditioner capable of reliably determining a cooling cycle and a heating cycle after switching the four-way switching valve.
【０００２】[0002]
【従来の技術】従来のこの種の空気調和機、例えばヒー
トポンプ式空気調和機においてはパイロット式の四方切
換弁によって冷房サイクルと暖房サイクルの切換えを行
っていた。パイロット式の四方切換弁は機械的に弁を切
り換えており、四方切換弁前後の圧力差の影響はなかっ
た。しかし、近年低価格化のために用いられているロー
タリー式の四方切換弁では四方切換弁前後の圧力差が大
きい場合は動作しなくなるため、冷房サイクル、暖房サ
イクルの切り換えが正常に行えたのかを判断する必要性
が出てきた。2. Description of the Related Art In a conventional air conditioner of this type, for example, a heat pump type air conditioner, the cooling cycle and the heating cycle are switched by a pilot type four-way switching valve. The pilot type four-way switching valve mechanically switches the valve, and there was no effect of the pressure difference before and after the four-way switching valve. However, the rotary four-way switching valve that has been used for lowering the price in recent years does not operate when the pressure difference before and after the four-way switching valve is large, so whether the switching between the cooling cycle and the heating cycle could be performed normally The need to judge came out.
【０００３】従来の四方切換弁の切換後の冷房サイク
ル、暖房サイクルの判定方法として、起動時の室内熱交
換器温度検出装置の検出温度と一定時間経過後の室内熱
交換器温度検出装置の検出温度の相対比較をもって判定
する方法がある。すなわち、冷房運転の場合では１回目
の検出温度よりも２回目の検出温度の方が温度が低くな
り、暖房運転の場合はその逆となることを利用してい
る。As a conventional method for determining the cooling cycle and the heating cycle after switching the four-way switching valve, the temperature detected by the indoor heat exchanger temperature detection device at startup and the detection by the indoor heat exchanger temperature detection device after a lapse of a certain period of time are detected. There is a method of judging by relative comparison of temperatures. That is, it is utilized that the temperature detected at the second time is lower than the temperature detected at the first time in the cooling operation, and vice versa in the heating operation.
【０００４】[0004]
【発明が解決しようとする課題】しかし、上記のように
構成してなる空気調和機による四方切換弁の切換後の冷
房サイクル、暖房サイクルの判定方法では、判定時間は
外気温、圧縮機周波数等の条件によらず一定となってい
る。そのため、外気温が低いとき、すなわち冷媒が室外
機にたまりやすい状態では、起動後室内側の温度検出装
置部分にまで冷媒が到達する時間は通常時に比べ長くな
り、あらかじめ設定されている判定時間内ではサイクル
温度が安定せず、温度の逆転現象が起こることから正確
な温度判定ができないため、正常運転しているにもかか
わらず誤判定により運転を停止してしまう可能性があ
る。また、この現象は立ち上がり時の圧縮機周波数が低
く冷媒の循環量が少ないときにも起こり、同じく誤判定
による運転停止が懸念される。However, in the determination method of the cooling cycle and the heating cycle after switching the four-way switching valve by the air conditioner configured as described above, the determination time is the outside air temperature, the compressor frequency, etc. It is constant regardless of the condition. Therefore, when the outside air temperature is low, that is, when the refrigerant easily accumulates in the outdoor unit, the time it takes for the refrigerant to reach the temperature detection device on the indoor side after startup is longer than in normal times, and within the preset determination time. However, since the cycle temperature is not stable and the temperature inversion phenomenon occurs, accurate temperature determination cannot be performed, so there is a possibility that the operation may be stopped due to an erroneous determination even though the operation is normal. This phenomenon also occurs when the compressor frequency at startup is low and the circulation amount of the refrigerant is small, and there is a concern that the operation may be stopped due to an erroneous determination.
【０００５】[0005]
【課題を解決するための手段】本発明の空気調和機は上
記のような課題を解決したもので、請求項１記載の発明
は、圧縮機、室外熱交換器、室内熱交換器、四方切換
弁、減圧装置、外気温検出装置、室内熱交換器温度検出
装置等を備え、四方切換弁の切換え後に、起動時の室内
熱交換器温度検出装置の温度と一定時間経過後の室内熱
交換器温度検出装置の温度を比較し、冷房サイクルか、
暖房サイクルかを判定する手段を備えてなる空気調和機
において、起動時の外気温検出装置からの検出温度に応
じて判定時間、例えば１回目の温度検出から２回目の温
度検出を行うまでの経過時間を可変制御する手段を備え
てなるものである。The air conditioner of the present invention has solved the above problems. The invention according to claim 1 is a compressor, an outdoor heat exchanger, an indoor heat exchanger, and a four-way switching. It is equipped with a valve, pressure reducing device, outside air temperature detecting device, indoor heat exchanger temperature detecting device, etc., and after switching the four-way switching valve, the temperature of the indoor heat exchanger temperature detecting device at startup and the indoor heat exchanger after a certain time has elapsed. Compare the temperature of the temperature detection device, whether it is a cooling cycle,
In an air conditioner including means for determining whether it is a heating cycle, a determination time is determined according to the temperature detected by the outside air temperature detection device at startup, for example, the elapsed time from the first temperature detection to the second temperature detection. It is provided with means for variably controlling the time.
【０００６】また、請求項２記載の発明は、圧縮機、室
外熱交換器、室内熱交換器、四方切換弁、減圧装置、室
外熱交換器温度検出装置、室内熱交換器温度検出装置等
を備え、四方切換弁の切換え後に、起動時の室内熱交換
器温度検出装置の温度と一定時間経過後の室内熱交換器
温度検出装置の温度を比較し、冷房サイクルか、暖房サ
イクルかを判定する手段を備えてなる空気調和機におい
て、起動時の室外熱交換器温度検出装置の検出温度に応
じて判定時間、例えば１回目の温度検出から２回目の温
度検出を行うまでの経過時間を可変制御する手段を備え
てなるものである。The invention according to claim 2 includes a compressor, an outdoor heat exchanger, an indoor heat exchanger, a four-way switching valve, a pressure reducing device, an outdoor heat exchanger temperature detecting device, an indoor heat exchanger temperature detecting device, and the like. After the four-way switching valve is switched, the temperature of the indoor heat exchanger temperature detection device at startup is compared with the temperature of the indoor heat exchanger temperature detection device after a certain period of time to determine whether it is a cooling cycle or a heating cycle. In the air conditioner including the means, the judgment time, for example, the elapsed time from the first temperature detection to the second temperature detection is variably controlled according to the temperature detected by the outdoor heat exchanger temperature detection device at startup. It is provided with a means to do.
【０００７】そして、請求項３記載の発明は、圧縮機、
室外熱交換器、室内熱交換器、四方切換弁、減圧装置、
室内熱交換器温度検出装置等を備え、四方切換弁の切換
え後に、起動時の室内熱交換器温度検出装置の温度と一
定時間経過後の室内熱交換器温度検出装置の温度を比較
し、冷房サイクルか、暖房サイクルかを判定する手段を
備えてなる空気調和機において、起動時の圧縮機周波数
に応じて判定時間、例えば１回目の温度検出から２回目
の温度検出を行うまでの経過時間を可変制御する手段を
備えてなるものである。The invention according to claim 3 is a compressor,
Outdoor heat exchanger, indoor heat exchanger, four-way switching valve, pressure reducing device,
Equipped with an indoor heat exchanger temperature detection device, etc., after switching the four-way switching valve, the temperature of the indoor heat exchanger temperature detection device at startup is compared with the temperature of the indoor heat exchanger temperature detection device after a certain period of time, and cooling is performed. In an air conditioner including means for determining whether the cycle is a heating cycle or a heating cycle, a determination time is determined according to the compressor frequency at startup, for example, an elapsed time from the first temperature detection to the second temperature detection. It comprises means for variably controlling.
【０００８】そしてまた、請求項４記載の発明は、請求
項１記載の空気調和機において、さらに起動時の圧縮機
周波数を加味し判定時間、例えば１回目の温度検出から
２回目の温度検出を行うまでの経過時間を可変制御する
手段を備えてなるものである。さらに、請求項５記載の
発明は、請求項２記載の空気調和機において、起動時の
圧縮機周波数を加味し判定時間、例えば１回目の温度検
出から２回目の温度検出を行うまでの経過時間を可変制
御する手段を備えてなるものである。Further, in the invention according to claim 4, in the air conditioner according to claim 1, further considering the compressor frequency at the time of start, the determination time, for example, the temperature detection from the first temperature detection to the second temperature detection is performed. It is provided with means for variably controlling the elapsed time until execution. Further, the invention according to claim 5 is the air conditioner according to claim 2, wherein the determination time is taken into consideration by taking the compressor frequency at startup into consideration, for example, the elapsed time from the first temperature detection to the second temperature detection. Is provided with a means for variably controlling.
【０００９】本発明の空気調和機は上記構成にて、外気
温が変化したとき、また立ち上がり時の圧縮機周波数が
変化したときなどでも、適正な判定時間を設定すること
が可能となり、四方切換弁の切換後の冷房サイクル、暖
房サイクルの判定信頼度が向上することから誤判定発生
頻度を軽減できる。また、逆に四方切換弁の誤動作を早
期発見することも可能となる。With the air conditioner of the present invention having the above-mentioned structure, it is possible to set an appropriate judgment time even when the outside air temperature changes, or when the compressor frequency at the time of start-up changes, and the four-way switching is possible. Since the determination reliability of the cooling cycle and the heating cycle after switching the valve is improved, the frequency of erroneous determinations can be reduced. On the contrary, it is possible to detect the malfunction of the four-way switching valve at an early stage.
【００１０】[0010]
【発明の実施の形態】以下、本発明の空気調和機の実施
の形態を図面とともに説明する。図１は本発明の空気調
和機の実施の形態を示す冷凍サイクル図であり、図１に
おいて、冷房運転時は圧縮機１、四方切換弁２、室外熱
交換器３、減圧装置５、室内熱交換器６が順次連結さ
れ、暖房運転時は圧縮機１、四方切換弁２、室内熱交換
器６、減圧装置５、室外熱交換器３が順次連結されてい
る。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of an air conditioner of the present invention will be described below with reference to the drawings. 1 is a refrigeration cycle diagram showing an embodiment of an air conditioner of the present invention. In FIG. 1, in cooling operation, a compressor 1, a four-way switching valve 2, an outdoor heat exchanger 3, a pressure reducing device 5, an indoor heat The exchanger 6 is sequentially connected, and during the heating operation, the compressor 1, the four-way switching valve 2, the indoor heat exchanger 6, the decompression device 5, and the outdoor heat exchanger 3 are sequentially connected.
【００１１】４は室外送風機、７は室内送風機であり、
それぞれ室外熱交換器３、室内熱交換器６の熱交換に使
用される。８は外気温を検出する外気温サーミスタ、９
は室外熱交換器３の温度を検出する室外熱交換サーミス
タ、１０は室内熱交換器温度を検出する室内熱交換サー
ミスタである。4 is an outdoor blower, 7 is an indoor blower,
They are used for heat exchange between the outdoor heat exchanger 3 and the indoor heat exchanger 6, respectively. 8 is an outside temperature thermistor for detecting the outside temperature, 9
Is an outdoor heat exchange thermistor for detecting the temperature of the outdoor heat exchanger 3, and 10 is an indoor heat exchange thermistor for detecting the temperature of the indoor heat exchanger.
【００１２】図２は本発明の空気調和機の実施の形態を
示す電気回路図であり、マイコン制御回路１１、室内送
風機７、室外送風機４、四方切換弁２、圧縮機１はそれ
ぞれ電源プラグ１６に接続されている。室内送風機リレ
ー１５、室外送風機リレー１４、四方切換弁リレー１
３、圧縮機周波数可変制御回路（インバーター回路）１
２はそれぞれマイコン制御回路１１の出力により制御さ
れる。また、室内熱交換サーミスタ８は室内熱交換器温
度を、外気温サーミスタ９は外気温を、室外熱交換サー
ミスタ１０は室外熱交換器温度をそれぞれマイコン制御
回路１１に入力している。FIG. 2 is an electric circuit diagram showing an embodiment of the air conditioner of the present invention. The microcomputer control circuit 11, the indoor blower 7, the outdoor blower 4, the four-way switching valve 2, and the compressor 1 are respectively power plugs 16. It is connected to the. Indoor blower relay 15, outdoor blower relay 14, four-way switching valve relay 1
3, compressor frequency variable control circuit (inverter circuit) 1
2 are controlled by the output of the microcomputer control circuit 11. The indoor heat exchange thermistor 8 inputs the indoor heat exchanger temperature, the outdoor air temperature thermistor 9 inputs the outdoor air temperature, and the outdoor heat exchange thermistor 10 inputs the outdoor heat exchanger temperature to the microcomputer control circuit 11.
【００１３】以上のように空気調和機は構成されてお
り、冷房運転を開始すると圧縮機周波数可変制御回路１
２、室内送風機リレー１５、室外送風機リレー１４、四
方切換弁リレー１３がマイコン制御回路１１により閉路
する。すると、圧縮機１は運転を開始し、吐出ガスが四
方切換弁２を介して室外熱交換器３に送られる。この冷
媒ガスは、室外熱交換器３で室外空気と熱交換し凝縮液
化し、続いて減圧装置５で減圧され、室内熱交換器６で
蒸発し、室内送風機７により室内空気を冷却する。蒸発
した冷媒ガスは圧縮機１に戻る冷凍サイクルが繰り返さ
れる。暖房運転時は上記と逆のサイクルを繰り返す。The air conditioner is configured as described above, and when the cooling operation is started, the compressor frequency variable control circuit 1
2. The indoor blower relay 15, the outdoor blower relay 14, and the four-way switching valve relay 13 are closed by the microcomputer control circuit 11. Then, the compressor 1 starts operating, and the discharge gas is sent to the outdoor heat exchanger 3 via the four-way switching valve 2. This refrigerant gas exchanges heat with the outdoor air in the outdoor heat exchanger 3 to be condensed and liquefied, subsequently decompressed in the decompression device 5, evaporated in the indoor heat exchanger 6, and cooled by the indoor blower 7 to cool the indoor air. The refrigerating cycle in which the evaporated refrigerant gas returns to the compressor 1 is repeated. During heating operation, the above cycle is repeated.
【００１４】次に本発明の空気調和機の第１の実施の形
態（請求項１記載の構成）について、図３のフローチャ
ートとともに説明する。まず、圧縮機１の起動を確認す
る（ステップ３−１）と、この時の室内熱交換器温度Ｔ
Ｎ０を室内熱交換サーミスタ１０により検出して記憶す
る。また、同時に外気温ＴＧを外気温サーミスタ８によ
り検出し記憶する（ステップ３−２）。Next, a first embodiment of the air conditioner of the present invention (structure according to claim 1) will be described with reference to the flow chart of FIG. First, when the startup of the compressor 1 is confirmed (step 3-1), the indoor heat exchanger temperature T at this time is confirmed.
NO is detected by the indoor heat exchange thermistor 10 and stored. At the same time, the outside air temperature TG is detected and stored by the outside air temperature thermistor 8 (step 3-2).
【００１５】この時、記憶した外気温ＴＧをもとに判定
時間ｔ（１回目の室内熱交換器温度ＴＮ０検出から２回
目の室内熱交換器温度ＴＮ１検出を行うまでの経過時
間）を例えば、外気温が５℃であれば１８０秒にすると
いうように決定する（ステップ３−３）。そして、判定
時間ｔ計測タイマー（ステップ３−４）をスタートさ
せ、ｔ時間経過を確認し（ステップ３−５）、２回目の
室内熱交換器温度ＴＮ１を検出して記憶する（ステップ
３−６）。At this time, the determination time t (the elapsed time from the first detection of the indoor heat exchanger temperature TN0 to the second detection of the indoor heat exchanger temperature TN1) based on the stored outside air temperature TG is, for example, If the outside air temperature is 5 ° C., it is determined to be 180 seconds (step 3-3). Then, the judgment time t measurement timer (step 3-4) is started, the elapse of time t is confirmed (step 3-5), the second indoor heat exchanger temperature TN1 is detected and stored (step 3-6). ).
【００１６】次に、運転モードを確認し（ステップ３−
７）、冷房運転であれば１回目の室内熱交換器温度ＴＮ
０と２回目の室内熱交換器温度ＴＮ１を比較し、ＴＮ０
＞ＴＮ１であれば正常処理を行う（ステップ３−８）。
また、暖房運転の場合はＴＮ０＜ＴＮ１であれば正常処
理を行う（ステップ３−９）。Next, the operation mode is confirmed (step 3-
7), if it is a cooling operation, the first indoor heat exchanger temperature TN
0 and the second indoor heat exchanger temperature TN1 are compared, and TN0
If> TN1, normal processing is performed (step 3-8).
In the heating operation, if TN0 <TN1, normal processing is performed (step 3-9).
【００１７】次に本発明の空気調和機の第２の実施の形
態（請求項２記載の構成）について、図４のフローチャ
ートとともに説明する。まず、圧縮機１の起動を確認す
る（ステップ４−１）と、この時の室内熱交換器温度Ｔ
Ｎ０を室内熱交換サーミスタ１０により検出して記憶す
る。また、同時に室外熱交換器温度ＴＧＮを室外熱交換
サーミスタ９により検出して記憶する（４−２）。Next, a second embodiment (structure according to claim 2) of the air conditioner of the present invention will be described with reference to the flowchart of FIG. First, when the startup of the compressor 1 is confirmed (step 4-1), the indoor heat exchanger temperature T at this time is confirmed.
NO is detected by the indoor heat exchange thermistor 10 and stored. At the same time, the outdoor heat exchanger temperature TGN is detected and stored by the outdoor heat exchange thermistor 9 (4-2).
【００１８】この時、記憶した室外熱交換器温度ＴＧＮ
をもとに判定時間ｔ（１回目の室内熱交換器温度ＴＮ０
検出から２回目の室内熱交換器温度ＴＮ１検出を行うま
での経過時間）を例えば、室外熱交換器温度が７℃であ
れば１８０秒にするというように、決定する（ステップ
４−３）。そして、判定時間ｔ計測タイマー（４−４）
をスタートさせ、ｔ時間経過を確認し（ステップ４−
５）、２回目の室内熱交換器温度ＴＮ１を検出して記憶
する（ステップ４−６）。At this time, the stored outdoor heat exchanger temperature TGN
Based on the determination time t (first indoor heat exchanger temperature TN0
The elapsed time from the detection to the second detection of the indoor heat exchanger temperature TN1) is determined to be 180 seconds if the outdoor heat exchanger temperature is 7 ° C., for example (step 4-3). Then, the determination time t measurement timer (4-4)
And confirm the elapse of t time (Step 4-
5) The second indoor heat exchanger temperature TN1 is detected and stored (step 4-6).
【００１９】次に、運転モードを確認し（ステップ４−
７）、冷房運転であれば１回目の室内熱交換器温度ＴＮ
０と２回目の室内熱交換器温度ＴＮ１を比較し、ＴＮ０
＞ＴＮ１であれば正常処理を行う（ステップ４−８）。
また、暖房運転の場合はＴＮ０＜ＴＮ１であれば正常処
理を行う（ステップ４−９）。Next, the operation mode is confirmed (step 4-
7), if it is a cooling operation, the first indoor heat exchanger temperature TN
0 and the second indoor heat exchanger temperature TN1 are compared, and TN0
If> TN1, normal processing is performed (step 4-8).
In the heating operation, if TN0 <TN1, normal processing is performed (step 4-9).
【００２０】次に本発明の空気調和機の第３の実施の形
態（請求項３記載の構成）について、図５のフローチャ
ートとともに説明する。まず、圧縮機１の起動を確認す
る（ステップ５−１）と、この時の室内熱交換器温度Ｔ
Ｎ０を室内熱交換サーミスタ１０により検出して記憶す
る。また、同時にマイコン制御回路１１から圧縮機周波
数可変制御回路１２に出力される圧縮機周波数Ｆを記憶
する（ステップ５−２）。Next, a third embodiment (structure of claim 3) of the air conditioner of the present invention will be described with reference to the flowchart of FIG. First, when the startup of the compressor 1 is confirmed (step 5-1), the indoor heat exchanger temperature T at this time is confirmed.
NO is detected by the indoor heat exchange thermistor 10 and stored. At the same time, the compressor frequency F output from the microcomputer control circuit 11 to the compressor frequency variable control circuit 12 is stored (step 5-2).
【００２１】この時、記憶した圧縮機周波数Ｆをもとに
判定時間ｔ（１回目の室内熱交換器温度ＴＮ０検出から
２回目の室内熱交換器温度ＴＮ１検出を行うまでの経過
時間）を例えば、圧縮機周波数Ｆが４０Ｈｚであれば１
８０秒にするというように、決定する（ステップ５−
３）。そして、判定時間ｔ計測タイマー（ステップ５−
４）をスタートさせ、ｔ時間経過を確認し（ステップ５
−５）、２回目の室内熱交換器温度ＴＮ１を検出して記
憶する（ステップ５−６）。At this time, the judgment time t (the elapsed time from the first detection of the indoor heat exchanger temperature TN0 to the second detection of the indoor heat exchanger temperature TN1) is determined based on the stored compressor frequency F, for example. , 1 if the compressor frequency F is 40 Hz
Set it to 80 seconds (step 5-
3). Then, the determination time t measurement timer (step 5-
4) is started and the elapse of t time is confirmed (step 5
-5) The second indoor heat exchanger temperature TN1 is detected and stored (step 5-6).
【００２２】次に、運転モードを確認し（ステップ５−
７）、冷房運転であれば１回目の室内熱交換器温度ＴＮ
０と２回目の室内熱交換器温度ＴＮ１を比較し、ＴＮ０
＞ＴＮ１であれば正常処理を行う（ステップ５−８）。
また、暖房運転の場合はＴＮ０＜ＴＮ１であれば正常処
理を行う（ステップ５−９）。Next, the operation mode is confirmed (step 5-
7), if it is a cooling operation, the first indoor heat exchanger temperature TN
0 and the second indoor heat exchanger temperature TN1 are compared, and TN0
If> TN1, normal processing is performed (step 5-8).
In the heating operation, if TN0 <TN1, normal processing is performed (step 5-9).
【００２３】次に本発明の空気調和機の第４の実施の形
態（請求項４記載の構成）について、図６のフローチャ
ートとともに説明する。まず、圧縮機１の起動を監視
し、圧縮機１の起動を確認する（ステップ６−１）と、
この時の室内熱交換器温度ＴＮ０を室内熱交換サーミス
タ１０により検出して記憶する。また、同時に外気温度
ＴＧ、マイコン制御回路１１から圧縮機周波数可変制御
回路１２に出力される圧縮機周波数Ｆを記憶する（ステ
ップ６−２）。Next, a fourth embodiment (structure according to claim 4) of the air conditioner of the present invention will be described with reference to the flowchart of FIG. First, when the start-up of the compressor 1 is monitored and the start-up of the compressor 1 is confirmed (step 6-1),
The indoor heat exchanger temperature TN0 at this time is detected by the indoor heat exchange thermistor 10 and stored. At the same time, the outside air temperature TG and the compressor frequency F output from the microcomputer control circuit 11 to the compressor frequency variable control circuit 12 are stored (step 6-2).
【００２４】この時、記憶した外気温度ＴＧ、圧縮機周
波数Ｆの２つのデータをもとに判定時間ｔ（１回目の室
内熱交換器温度ＴＮ０検出から２回目の室内熱交換器温
度ＴＮ１検出を行うまでの経過時間）を例えば、外気温
度が５℃であれば１８０秒、また、そのときの圧縮機周
波数Ｆが４０Ｈｚであればさらに＋６０秒するというよ
うに決定する（ステップ６−３）。そして、判定時間ｔ
計測タイマー（ステップ６−４）をスタートさせ、ｔ時
間経過を確認し（ステップ６−５）、２回目の室内熱交
換器温度ＴＮ１を検出して記憶する（ステップ６−
６）。At this time, the determination time t (from the first detection of the indoor heat exchanger temperature TN0 to the second detection of the indoor heat exchanger temperature TN1 based on the stored two data of the outside air temperature TG and the compressor frequency F). For example, if the outside air temperature is 5 ° C., 180 seconds is passed, and if the compressor frequency F at that time is 40 Hz, +60 seconds is further passed (step 6-3). Then, the determination time t
The measurement timer (step 6-4) is started to confirm the elapse of time t (step 6-5), and the second indoor heat exchanger temperature TN1 is detected and stored (step 6-).
6).
【００２５】次に、運転モードを確認し（ステップ６−
７）、冷房運転であれば１回目の室内熱交換器温度ＴＮ
０と２回目の室内熱交換器温度ＴＮ１を比較し、ＴＮ０
＞ＴＮ１であれば正常処理を行う（ステップ６−８）。
また、暖房運転の場合はＴＮ０＜ＴＮ１であれば正常処
理を行う（ステップ６−９）。Next, the operation mode is confirmed (step 6-
7), if it is a cooling operation, the first indoor heat exchanger temperature TN
0 and the second indoor heat exchanger temperature TN1 are compared, and TN0
If> TN1, normal processing is performed (step 6-8).
In the heating operation, if TN0 <TN1, normal processing is performed (step 6-9).
【００２６】次に本発明の空気調和機の第５の実施の形
態（請求項５記載の構成）について、図７のフローチャ
ートとともに説明する。まず、圧縮機１の起動を監視
し、圧縮機１の起動を確認する（ステップ７−１）と、
この時の室内熱交換器温度ＴＮ０を室内熱交換サーミス
タ１０により検出して記憶する。また、同時に室外熱交
換器温度ＴＧＮ、マイコン制御回路１１から圧縮機周波
数可変制御回路１２に出力される圧縮機周波数Ｆを記憶
する（ステップ７−２）。Next, a fifth embodiment (structure of claim 5) of the air conditioner of the present invention will be described with reference to the flowchart of FIG. First, when the activation of the compressor 1 is monitored and the activation of the compressor 1 is confirmed (step 7-1),
The indoor heat exchanger temperature TN0 at this time is detected by the indoor heat exchange thermistor 10 and stored. At the same time, the outdoor heat exchanger temperature TGN and the compressor frequency F output from the microcomputer control circuit 11 to the compressor frequency variable control circuit 12 are stored (step 7-2).
【００２７】この時、記憶した室外熱交換器温度ＴＧ
Ｎ、圧縮機周波数Ｆの２つのデータをもとに判定時間ｔ
（１回目の室内熱交換器温度ＴＮ０検出から２回目の室
内熱交換器温度ＴＮ１検出を行うまでの経過時間）を例
えば、室外熱交換器温度が７℃であれば１８０秒、また
そのときの圧縮機周波数Ｆが４０Ｈｚであればさらに＋
６０秒するというように決定する（ステップ７−３）。
そして、判定時間ｔ計測タイマー（ステップ７−４）を
スタートさせ、ｔ時間経過を確認し（ステップ７−
５）、２回目の室内熱交換器温度ＴＮ１を検出して記憶
する（ステップ７−６）。At this time, the stored outdoor heat exchanger temperature TG
The judgment time t based on two data of N and compressor frequency F
(The elapsed time from the first detection of the indoor heat exchanger temperature TN0 to the second detection of the indoor heat exchanger temperature TN1) is, for example, 180 seconds if the outdoor heat exchanger temperature is 7 ° C., and If the compressor frequency F is 40 Hz, then +
It is decided that it will be 60 seconds (step 7-3).
Then, the judgment time t measurement timer (step 7-4) is started and the elapse of t time is confirmed (step 7-
5) The second indoor heat exchanger temperature TN1 is detected and stored (step 7-6).
【００２８】次に、運転モードを確認し（ステップ７−
７）、冷房運転であれば１回目の室内熱交換器温度ＴＮ
０と２回目の室内熱交換器温度ＴＮ１を比較し、ＴＮ０
＞ＴＮ１であれば正常処理を行う（ステップ７−８）。
また、暖房運転の場合はＴＮ０＜ＴＮ１であれば正常処
理を行う（ステップ７−９）。Next, the operation mode is confirmed (step 7-
7), if it is a cooling operation, the first indoor heat exchanger temperature TN
0 and the second indoor heat exchanger temperature TN1 are compared, and TN0
If> TN1, normal processing is performed (step 7-8).
In the heating operation, if TN0 <TN1, normal processing is performed (step 7-9).
【００２９】[0029]
【発明の効果】本発明の空気調和機は上記のような構成
であるから、外気温、圧縮機周波数などの条件を考慮
し、適正な判定時間を設定することにより、四方切換弁
の切換後の冷房サイクル、暖房サイクルの誤判定発生頻
度を軽減できる。また、逆に四方切換弁の誤動作を早期
発見することも可能となり、より効率的な空気調和機の
運転が実現できる。Since the air conditioner of the present invention has the above-mentioned structure, the four-way switching valve is switched after switching the four-way switching valve by setting an appropriate judgment time in consideration of conditions such as the outside air temperature and the compressor frequency. It is possible to reduce the frequency of erroneous determinations in the cooling cycle and the heating cycle. On the contrary, it becomes possible to detect the malfunction of the four-way switching valve early, and more efficient operation of the air conditioner can be realized.
【図１】本発明の空気調和機の実施の形態を示す冷凍サ
イクル図である。FIG. 1 is a refrigeration cycle diagram showing an embodiment of an air conditioner of the present invention.
【図２】本発明の空気調和機の実施の形態を示す電気回
路図である。FIG. 2 is an electric circuit diagram showing an embodiment of the air conditioner of the present invention.
【図３】本発明の空気調和機の第１の実施の形態を説明
するフローチャートである。FIG. 3 is a flowchart illustrating a first embodiment of the air conditioner of the present invention.
【図４】本発明の空気調和機の第２の実施の形態を説明
するフローチャートである。FIG. 4 is a flowchart illustrating a second embodiment of the air conditioner of the present invention.
【図５】本発明の空気調和機の第３の実施の形態を説明
するフローチャートである。FIG. 5 is a flowchart illustrating a third embodiment of the air conditioner of the present invention.
【図６】本発明の空気調和機の第４の実施の形態を説明
するフローチャートである。FIG. 6 is a flowchart illustrating a fourth embodiment of the air conditioner of the present invention.
【図７】本発明の空気調和機の第５の実施の形態を説明
するフローチャートである。FIG. 7 is a flow chart illustrating a fifth embodiment of the air conditioner of the present invention.
１ 圧縮機 ２ 四方切換弁 ３ 室外熱交換器 ４ 室外送風機 ５ 減圧装置 ６ 室内熱交換器 ７ 室内送風機 ８ 外気温サーミスタ ９ 室外熱交換サーミスタ １０ 室内熱交換サーミスタ １１ マイコン制御回路 １２ 圧縮機周波数可変制御回路 1 compressor 2 4-way switching valve 3 outdoor heat exchanger 4 outdoor blower 5 decompressor 6 indoor heat exchanger 7 indoor blower 8 outdoor air temperature thermistor 9 outdoor heat exchange thermistor 10 indoor heat exchange thermistor 11 microcomputer control circuit 12 compressor frequency variable control circuit
Claims (5)
四方切換弁、減圧装置等を備え、四方切換弁の切換え後
に、起動時の室内熱交換器温度検出装置の温度と一定時
間経過後の室内熱交換器温度検出装置の温度を比較し、
冷房サイクルか、暖房サイクルかを判定する手段を備え
てなる空気調和機において、起動時の外気温検出装置か
らの検出温度によって判定時間を可変制御する手段を備
えてなることを特徴とする空気調和機。1. A compressor, an outdoor heat exchanger, an indoor heat exchanger,
Equipped with a four-way switching valve, pressure reducing device, etc., after switching the four-way switching valve, the temperature of the indoor heat exchanger temperature detection device at startup is compared with the temperature of the indoor heat exchanger temperature detection device after a certain period of time,
An air conditioner comprising means for determining whether it is a cooling cycle or a heating cycle, characterized in that it is provided with means for variably controlling the determination time according to the temperature detected by the outside air temperature detection device at startup. Machine.
四方切換弁、減圧装置等を備え、四方切換弁の切換え後
に、起動時の室内熱交換器温度検出装置の検出温度と一
定時間経過後の室内熱交換器温度検出装置の検出温度を
比較し、冷房サイクルか、暖房サイクルかを判定する手
段を備えてなる空気調和機において、起動時の室外熱交
換器温度検出装置の温度によって判定時間を可変制御す
る手段を備えてなることを特徴とする空気調和機。2. A compressor, an outdoor heat exchanger, an indoor heat exchanger,
Equipped with a four-way switching valve, pressure reducing device, etc., after switching the four-way switching valve, compare the temperature detected by the indoor heat exchanger temperature detection device at startup with the temperature detected by the indoor heat exchanger temperature detection device after a certain period of time, An air conditioner comprising means for determining whether it is a cooling cycle or a heating cycle, characterized in that it is provided with means for variably controlling the determination time depending on the temperature of the outdoor heat exchanger temperature detection device at the time of startup. Harmony machine.
四方切換弁、減圧装置等を備え、四方切換弁の切換え後
に、起動時の室内熱交換器温度検出装置の検出温度と一
定時間経過後の室内熱交換器温度検出装置の検出温度を
比較し、冷房サイクルか、暖房サイクルかを判定する手
段を備えてなる空気調和機において、起動時の圧縮機周
波数によって判定時間を可変制御する手段を備えてなる
ことを特徴とする空気調和機。3. A compressor, an outdoor heat exchanger, an indoor heat exchanger,
Equipped with a four-way switching valve, pressure reducing device, etc., after switching the four-way switching valve, compare the temperature detected by the indoor heat exchanger temperature detection device at startup with the temperature detected by the indoor heat exchanger temperature detection device after a certain period of time, An air conditioner comprising means for determining whether it is a cooling cycle or a heating cycle, characterized by comprising means for variably controlling the determination time depending on the compressor frequency at startup.
らに起動時の圧縮機周波数によって判定時間を可変制御
する手段を備えてなることを特徴とする空気調和機。4. The air conditioner according to claim 1, further comprising means for variably controlling the determination time depending on the compressor frequency at the time of startup.
らに起動時の圧縮機周波数によって判定時間を可変制御
する手段を備えてなることを特徴とする空気調和機。5. The air conditioner according to claim 2, further comprising means for variably controlling the determination time depending on the compressor frequency at startup.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07577196A JP3218180B2 (en) | 1996-03-29 | 1996-03-29 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07577196A JP3218180B2 (en) | 1996-03-29 | 1996-03-29 | Air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09264590A true JPH09264590A (en) | 1997-10-07 |
| JP3218180B2 JP3218180B2 (en) | 2001-10-15 |
Family
ID=13585814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP07577196A Expired - Fee Related JP3218180B2 (en) | 1996-03-29 | 1996-03-29 | Air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3218180B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100624808B1 (en) * | 2004-12-28 | 2006-09-18 | 엘지전자 주식회사 | Method judging change-fail of 4-way-valve in simultaneous heating and cooling type air-conditioner |
| JP2012102896A (en) * | 2010-11-08 | 2012-05-31 | Panasonic Corp | Refrigerating cycle device |
| JP2013083361A (en) * | 2011-10-06 | 2013-05-09 | Panasonic Corp | Refrigeration cycle device |
| CN103344024A (en) * | 2013-07-17 | 2013-10-09 | 曙光信息产业(北京)有限公司 | Air conditioner outdoor unit system |
| CN104214987A (en) * | 2014-09-05 | 2014-12-17 | 四川长虹电器股份有限公司 | Information processing method and temperature regulating equipment |
-
1996
- 1996-03-29 JP JP07577196A patent/JP3218180B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100624808B1 (en) * | 2004-12-28 | 2006-09-18 | 엘지전자 주식회사 | Method judging change-fail of 4-way-valve in simultaneous heating and cooling type air-conditioner |
| JP2012102896A (en) * | 2010-11-08 | 2012-05-31 | Panasonic Corp | Refrigerating cycle device |
| JP2013083361A (en) * | 2011-10-06 | 2013-05-09 | Panasonic Corp | Refrigeration cycle device |
| CN103344024A (en) * | 2013-07-17 | 2013-10-09 | 曙光信息产业(北京)有限公司 | Air conditioner outdoor unit system |
| CN103344024B (en) * | 2013-07-17 | 2016-02-10 | 曙光信息产业(北京)有限公司 | Air conditioner outdoor unit system |
| CN104214987A (en) * | 2014-09-05 | 2014-12-17 | 四川长虹电器股份有限公司 | Information processing method and temperature regulating equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3218180B2 (en) | 2001-10-15 |
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