JP3218180B2 - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JP3218180B2 JP3218180B2 JP07577196A JP7577196A JP3218180B2 JP 3218180 B2 JP3218180 B2 JP 3218180B2 JP 07577196 A JP07577196 A JP 07577196A JP 7577196 A JP7577196 A JP 7577196A JP 3218180 B2 JP3218180 B2 JP 3218180B2
- Authority
- JP
- Japan
- Prior art keywords
- heat exchanger
- temperature
- indoor heat
- air conditioner
- detected
- 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 - Fee Related
Links
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 of a 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, a cooling cycle and a 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 influence of the pressure difference before and after the four-way switching valve. However, since the rotary type four-way switching valve used in recent years to reduce the price does not operate when the pressure difference before and after the four-way switching valve is large, it is difficult to determine whether the switching between the cooling cycle and the heating cycle can be performed normally. The need to judge has emerged.
【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。[0003] As a conventional method for judging the cooling cycle and the heating cycle after switching of the four-way switching valve, the detected temperature of the indoor heat exchanger temperature detecting device at the time of startup and the detection of the indoor heat exchanger temperature detecting device after a certain period of time have elapsed. There is a method of making a determination based on a relative comparison of temperatures. That is, in the case of the cooling operation, the second detection temperature is lower than the first detection temperature, and the opposite is used 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 method for judging the cooling cycle and the heating cycle after switching the four-way switching valve by the air conditioner configured as described above, the judgment time is determined by the outside air temperature, the compressor frequency and the like. Is constant regardless of the conditions. Therefore, when the outside air temperature is low, that is, in a state in which the refrigerant easily accumulates in the outdoor unit, the time for the refrigerant to reach the temperature detection device portion on the indoor side after the start is longer than usual, and within the predetermined determination time. In this case, since the cycle temperature is not stable and a temperature reversal phenomenon occurs, accurate temperature determination cannot be performed. Therefore, there is a possibility that the operation is stopped due to an erroneous determination despite the normal operation. This phenomenon also occurs when the compressor frequency at the time of startup is low and the amount of circulating refrigerant is small, and there is a fear that the operation may be stopped due to 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検出温度と判定時間経過後の室
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、起動時の外気温検出装置からの検出
温度に応じて前記判定時間、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。SUMMARY OF THE INVENTION An air conditioner according to the present invention has solved the above-mentioned problems, and the invention according to claim 1 has a compressor, an outdoor heat exchanger, an indoor heat exchanger, and a four-way switch. valves, pressure reducing device, the outside air temperature detection device, having an indoor heat exchanger temperature detection device such as a four-way after the switching valve switched to, startup of the indoor heat after the detected temperature and determine the constant time of the indoor heat exchanger temperature detector comparing the detected temperature of the exchanger temperature detector, or the cooling cycle, the air conditioner comprising comprising means for determining whether the heating cycle, the determination time according to the detected temperature from the outside air temperature detection device at startup, For example, there is provided means for variably controlling the elapsed time from the first temperature detection to the second temperature detection.
【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
器温度検出装置の検出温度と判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検
出温度に応じて前記判定時間、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, 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. provided, after switching of the four-way switching valve, by comparing the detected temperature of the detected temperature and determine the indoor heat exchanger temperature detection device after the constant time of the indoor heat exchanger temperature detection device boot-up, the cooling cycle, or a heating cycle in an air conditioner comprising comprising a means for determining a course of until the determination time, for example, the second temperature detected from the first temperature detection in accordance with the detected temperature of the outdoor heat exchanger temperature detection device at startup It is provided with means for variably controlling the time.
【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検出温度
と判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
機周波数に応じて前記判定時間、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,
Having an indoor heat exchanger temperature detection device or the like, after the switching of the four-way switching valve, the detection temperature of the temperature detected and determine the indoor heat exchanger temperature detection device after the constant time of the indoor heat exchanger temperature detection device at startup <br The air conditioner is provided with means for comparing the temperature and determining whether the cycle is a cooling cycle or a heating cycle. A means for variably controlling the elapsed time until the temperature is detected is provided.
【０００８】そしてまた、請求項４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
度検出装置の検出温度と判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、起動時の外気温検出装置からの検出温度及び起
動時の圧縮機周波数に応じて前記判定時間、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、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
の検出温度と判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検出温度及び起動時
の圧縮機周波数に応じて前記判定時間、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。[0008] And also, the invention of claim 4, wherein the compression
Machine, outdoor heat exchanger, indoor heat exchanger, four-way switching valve, pressure reducing device
Equipment, outside air temperature detector, indoor heat exchanger temperature detector, etc.
After switching the four-way switching valve, the temperature of the indoor heat exchanger
Indoor heat exchanger after the temperature detected by the temperature detector and the judgment time
Compare the temperature detected by the temperature detection device, and
In the air conditioner including means for determining whether or not the chamber cycle, the determination time, for example, the first time, according to the temperature detected from the outside air temperature detection device at the time of startup and the compressor frequency at the time of startup A means for variably controlling the elapsed time from the temperature detection to the second temperature detection is provided. The invention according to claim 5 further includes a compressor, an outdoor heat exchanger, and a room.
Internal heat exchanger, four-way switching valve, pressure reducing device, outdoor heat exchanger temperature
Equipped with a detector, indoor heat exchanger temperature detector, etc.
Indoor heat exchanger temperature detector at startup after switching valve
Temperature of the indoor heat exchanger after the detection time
Compare the detected temperatures of
In an air conditioner comprising comprising determining means for determining, electromotive
Means for variably controlling the determination time, for example, the elapsed time from the first temperature detection to the second temperature detection, according to the detected temperature of the outdoor heat exchanger temperature detecting device during operation and the compressor frequency at startup. It is provided with.
【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。In the air conditioner of the present invention having the above 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 startup changes. Since the determination reliability of the cooling cycle and the heating cycle after the switching of the valve is improved, the frequency of erroneous determination can be reduced. Conversely, a malfunction of the four-way switching valve can be detected 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。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the air conditioner of the present invention will be described below with reference to the drawings. FIG. 1 is a refrigeration cycle diagram showing an embodiment of an air conditioner of the present invention. In FIG. 1, during 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 exchangers 6 are sequentially connected, and the compressor 1, the four-way switching valve 2, the indoor heat exchanger 6, the pressure reducing device 5, and the outdoor heat exchanger 3 are sequentially connected during the heating operation.
【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,
These 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 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 each provided with a power plug 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, respectively. 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. 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 discharged gas is sent to the outdoor heat exchanger 3 via the four-way switching valve 2. The refrigerant gas exchanges heat with the outdoor air in the outdoor heat exchanger 3 to condense and liquefy. Subsequently, the pressure is reduced by the pressure reducing device 5, evaporated in the indoor heat exchanger 6, and cooled by the indoor blower 7. The refrigeration cycle in which the evaporated refrigerant gas returns to the compressor 1 is repeated. During the heating operation, the reverse 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 (the configuration according to claim 1) will be described with reference to the flowchart of FIG. First, when the start of the compressor 1 is confirmed (step 3-1), the indoor heat exchanger temperature T at this time is checked.
NO is detected by the indoor heat exchange thermistor 10 and stored. At the same time, the outside temperature TG is detected and stored by the outside 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, a determination time t (elapsed time from when the first indoor heat exchanger temperature TN0 is detected to when the second indoor heat exchanger temperature TN1 is detected) is determined based on the stored outside air temperature TG, for example. If the outside air temperature is 5 ° C., it is determined to be 180 seconds (step 3-3). Then, the determination time t measurement timer (step 3-4) is started, and the elapse of the time t is confirmed (step 3-5), and 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) For cooling operation, the first indoor heat exchanger temperature TN
0 and the second indoor heat exchanger temperature TN1, and TN0
If> TN1, normal processing is performed (step 3-8).
In the case of 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 description will be given of a second embodiment of the air conditioner of the present invention (the configuration according to claim 2) with reference to the flowchart of FIG. First, when the start of the compressor 1 is confirmed (step 4-1), the indoor heat exchanger temperature T at this time is checked.
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
Time t (the 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, for example, 180 seconds if the outdoor heat exchanger temperature is 7 ° C. (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) For cooling operation, the first indoor heat exchanger temperature TN
0 and the second indoor heat exchanger temperature TN1, and TN0
If> TN1, normal processing is performed (step 4-8).
In the case of 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 of the air conditioner of the present invention (the configuration according to claim 3) will be described with reference to the flowchart of FIG. First, the start of the compressor 1 is confirmed (step 5-1), and the indoor heat exchanger temperature T at this time is checked.
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, a determination time t (elapsed time from when the first indoor heat exchanger temperature TN0 is detected to when the second indoor heat exchanger temperature TN1 is detected) is determined based on the stored compressor frequency F, for example. , If the compressor frequency F is 40 Hz, 1
It is determined to be 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) For cooling operation, the first indoor heat exchanger temperature TN
0 and the second indoor heat exchanger temperature TN1, and TN0
If> TN1, normal processing is performed (step 5-8).
In the case of 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 of the air conditioner of the present invention (the configuration according to claim 4) will be described with reference to the flowchart of FIG. First, the start of the compressor 1 is monitored and the start of the compressor 1 is confirmed (step 6-1).
The indoor heat exchanger temperature TN0 at this time is detected and stored by the indoor heat exchange thermistor 10. At the same time, it stores 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 (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) is 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, and if the compressor frequency F at that time is 40 Hz, the time is further increased by 60 seconds (step 6-3). And the determination time t
The measurement timer (step 6-4) is started, and the elapse of t time is confirmed (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) For cooling operation, the first indoor heat exchanger temperature TN
0 and the second indoor heat exchanger temperature TN1, and TN0
If> TN1, normal processing is performed (step 6-8).
In the case of 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 description will be given of a fifth embodiment of the air conditioner according to the present invention (the configuration according to claim 5) by referring to the flowchart of FIG. First, the start of the compressor 1 is monitored and the start of the compressor 1 is confirmed (step 7-1).
The indoor heat exchanger temperature TN0 at this time is detected and stored by the indoor heat exchange thermistor 10. 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
N, the determination time t based on the two data of the compressor frequency F
(Elapsed time from the first detection of the indoor heat exchanger temperature TN0 to the detection of the second indoor heat exchanger temperature TN1) is, for example, 180 seconds if the outdoor heat exchanger temperature is 7 ° C. If the compressor frequency F is 40 Hz,
It is determined to be 60 seconds (step 7-3).
Then, the determination 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) For cooling operation, the first indoor heat exchanger temperature TN
0 and the second indoor heat exchanger temperature TN1, and TN0
If> TN1, normal processing is performed (step 7-8).
In the case of 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-described configuration, by setting an appropriate judgment time in consideration of the conditions such as the outside air temperature and the compressor frequency, the switching of the four-way switching valve can be performed. Erroneous determination frequency of the cooling cycle and the heating cycle can be reduced. Conversely, a malfunction of the four-way switching valve can be detected 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 an air conditioner according to a third embodiment 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 flowchart illustrating an air conditioner according to a fifth embodiment 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 REFERENCE SIGNS LIST 1 compressor 2 four-way switching valve 3 outdoor heat exchanger 4 outdoor blower 5 pressure reducing device 6 indoor heat exchanger 7 indoor blower 8 outdoor temperature thermistor 9 outdoor heat exchange thermistor 10 indoor heat exchange thermistor 11 microcomputer control circuit 12 compressor frequency variable control circuit
フロントページの続き (56)参考文献 特開 平６−88636（ＪＰ，Ａ) 特開 平６−337148（ＪＰ，Ａ) 特開 平６−341692（ＪＰ，Ａ) 特開 平６−88637（ＪＰ，Ａ) 特開 平４−93539（ＪＰ，Ａ) 特開 平４−302936（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) F24F 11/02 102 Continuation of the front page (56) References JP-A-6-88636 (JP, A) JP-A-6-337148 (JP, A) JP-A-6-341692 (JP, A) JP-A-6-88637 (JP) JP-A-4-93539 (JP, A) JP-A-4-302936 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) F24F 11/02 102
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検出温度と判
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、起動時の外気温検
出装置からの検出温度によって、前記判定時間を可変制
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,
Four-way selector valve, comprising a pressure reducing device, after switching of the four-way switching valve, the detection of the detected temperature and determine <br/> indoor heat exchanger temperature detection device after the constant time of the indoor heat exchanger temperature detection device at startup An air conditioner comprising means for comparing temperatures and determining whether the cycle is a cooling cycle or a heating cycle, comprising means for variably controlling the determination time according to the temperature detected from the outside air temperature detection device at the time of startup. An air conditioner characterized by that:
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判
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検出温度によって、前記判定時間を
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,
Four-way selector valve, comprising a pressure reducing device, after switching of the four-way switching valve, the detection of the detected temperature and determine <br/> indoor heat exchanger temperature detection device after the constant time of the indoor heat exchanger temperature detection device at startup comparing the temperature, or the cooling cycle, the air conditioner comprising comprising determining means for determining the heating cycle, the detected temperature of the outdoor heat exchanger temperature detection device at startup, comprising means for variably controlling the determination time An air conditioner characterized by comprising:
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判
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、前記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,
Four-way selector valve, comprising a pressure reducing device, after switching of the four-way switching valve, the detection of the detected temperature and determine <br/> indoor heat exchanger temperature detection device after the constant time of the indoor heat exchanger temperature detection device at startup An air conditioner comprising means for comparing temperatures and determining whether the cycle is a cooling cycle or a heating cycle, characterized in that the air conditioner further comprises means for variably controlling the determination time according to a compressor frequency at the time of startup. Air conditioner.
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判
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、起動時の外気温検
出装置からの検出温度及び起動時の圧縮機周波数によっ
て、前記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. 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 detected by the indoor heat exchanger temperature detector at
The detected temperature of the indoor heat exchanger
Compare and determine the cooling or heating cycle
For an air conditioner equipped with a step,
The detected temperature and the compressor frequency when starting from detection device, an air conditioner characterized by comprising comprises means for variably controlling the determination time.
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判
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検出温度及び起動時の圧縮機周波数
によって、前記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. 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 detected by the indoor heat exchanger temperature detector at
The detected temperature of the indoor heat exchanger
Compare and determine the cooling or heating cycle
In an air conditioner equipped with a step, outdoor heat exchange
The detected temperature and the compressor frequency during startup of the exchanger temperature detector, the air conditioner characterized by comprising comprises means for variably controlling the determination time.
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 JPH09264590A (en) | 1997-10-07 |
| JP3218180B2 true 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) |
Families Citing this family (4)
| 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 |
| 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 |
-
1996
- 1996-03-29 JP JP07577196A patent/JP3218180B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09264590A (en) | 1997-10-07 |
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