JPH0160847B2

JPH0160847B2 -

Info

Publication number: JPH0160847B2
Application number: JP55085543A
Authority: JP
Inventors: Mutsuhiro Wakayama
Original assignee: Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Holdings Corp
Priority date: 1980-06-23
Filing date: 1980-06-23
Publication date: 1989-12-26
Also published as: JPS5710813A

Description

[Detailed description of the invention]

本発明は、冷凍サイクルを具備した空気調和機
等の如く熱交換装置の温度制御装置に関するもの
で、主に、初期運転時の壁面や天井等の熱輻射と
体感温度との関係により、温度設定値の変化時期
を決めることによつて、より良い居住性を得、か
つ省エネルギーとなることを目的とするものであ
る。従来の空気調和機における温度制御装置につい
て第８図、第９図を参考に説明する。第８図に示すように、従来の温度制御内容は、
空気調和機を運転してから一旦温度が設定温度ま
で下がつて安定状態となり、故意に設定温度を変
えない限り設定温度の変化は見られなかつた。し
たがつて、第９図に示すように室温T₁が設定温
度に到達したにもかかわらず壁面や天井からの輻
射熱T₂，T₃によつて体感温度T₄は設定温度まで
には至つておらず、暑さを感じ、ある時間T_S分
後に初めて体感温度はほぼ一定となる。したがつ
て、最適な室温の状態および体感温度を保つため
には、一度温度設定状態を引き下げる操作をして
おいてからあるT_S分後に設定温度を当初望むと
ころの温度に戻さねばならず、非常に不便であつ
た。なおかつ、室温が設定温度に到達して圧縮機
が停止すると、温度調節装置のデイフアレンシヤ
ル分だ室温度が上昇するため壁面や天井等から輻
射温度分と圧縮機停止による室温上掌分により、
余計に暑苦しさを感じるという欠点を有してい
た。そこで、本発明においては、上記従来の温度制
御に見られる欠点を解消し、例えば空調の場合で
あるとあらかじめ壁面や天井等からの輻射熱を考
慮に入れた温度制御を行なうことによつて、より
快適な環境を得るものである。以下、本発明をその一実施例を示す添付図面の
第１図から第４図を参考に説明する。まず第１図により冷凍サイクルについて説明す
る。同図において、１１は室内側熱交換器、１２
は室内側送風機、１３は室外側熱交換器、１４は
室外側送風機、１５は圧縮機、１６はキヤピラリ
チユーブで、これらにより周知の冷凍サイクルを
具備した空気調和機が構成されている。この冷凍
サイクルの動作については従来より周知であるた
めその説明を省略する。次に、第２図、第３図により温度制御回路につ
いて説明する。ここで、冷房運転制御としては圧
縮機１５の運転、停止により温度制御を行うもの
とする。第２図において、１は交流電源、２は電源スイ
ツチ、３は変圧器、４は電子制御装置、６ａ，６
ｂはそれぞれ電磁開閉器の接点で、電子制御装置
４の動作によりON、OFFを繰り返し、室外送風
機１４と圧縮機１５を運転・停止させる。なお、
１２は室内側送風機である。次に、第３図により上記電子制御装置４の内容
について説明する。同図において、R₁は冷房負荷を検出するサー
ミスタ等の感温抵抗素子で、室内側熱交換器１１
の吸込み温度を検出する如く設けられ、また、こ
の感温抵抗素子R₁は温度調節用ボリユームR₂と
抵抗R₃からなる直列回路と直列に接続されてい
る。５は第１のコンパレータで、入力端子（＋）
を感温抵抗素子R₁と温度調節用ボリユームR₂と
の間に接続し、基準端子（−）を抵抗R₄，R₅か
らなる直列回路の中間に接続している。また、第
１のコンパレータ５の出力端子はトランジスタ
Q₁のベース端子にダイオードD₂を介して接続さ
れている。６はトランジスタQ₁のコレクタ端子
に接続された電磁開閉器で、第２図に示す常用の
リレー接点６ａを開閉させるもので、圧縮機１５
の運転を制御するものである。７は第２のコンパ
レータで、入力端子（−）は抵抗R₈を介して後
述するタイマー９の出力端子Toutに接続されて
いるとともに、抵抗R₉と抵抗R₁₀の直列回路の中
間に接続され、基準端子（＋）を抵抗R₁₁と抵抗
R₁₂の直列回路の中間に接続している。この第２
のコンパレータ７の出力端子は、ダイオードD₄
と抵抗R₁₃との直列回路を介して温度調節用ボリ
ユームR₂と抵抗R₃の直列回路の中間に接続され
ている。９はタイマーで入力端子Tinは抵抗R₁₄
と輻射温度補正スイツチ８との直列回路の中間に
接続され、出力端子Toutは前述のとうり抵抗R₈
を介して第２のコンパレータ７の入力端子（−）
に接続されている。そしてこのタイマー９は設定
時間T_Sになると、出力端子ToutのLow信号がHI
信号に変わる。８は前述のとうり輻射温度補正ス
イツチで、前記タイマー９の出力端子ToutのHI
信号またはLow信号を出させて抵抗R₁₃の入、切
を行なうものである。V_ccは直流電源で、前記感
温抵抗素子R₁、抵抗R₄、抵抗R₇、抵抗R₉、抵抗
R₁₁、抵抗R₁₄、電磁開閉器６、ダイオードD₃お
よびタイマー９の電源側と接続される。R₆，R₁₆
はそれぞれ抵抗、D₁はダイオードである。上記構成において、第１のコンパレータ５は、
入力電圧V₍₊₎が基準電圧V_(-)より高いとトランジ
スタQ₁をONさせ、逆の場合にはOFFさせる。ま
た、第２のコンパレータ７は、輻射温度補正スイ
ツチ８が入の場合でタイマー９の出力端子Tout
にHI信号が出ている場合（設定時間T_S後）には、
出力端子Toutが開放となつて第２のコンパレー
タ７の入力電圧V′_(-)が基準電圧V′₍₊₎より高くな
り、抵抗R₁₃がアースされた同じ状態となり、抵
抗R₃と抵抗R₁₅との直列回路と抵抗R₁₃との並列
回路となつて、温度調節用ボリユームR₂と直列
に接続されたこととなる。よつて、この場合の並
列回路の合成抵抗は抵抗R₃より小さくなつて設
定温度がｔからｔ＋t_aまで引き上げられる。また、入力電圧V′_(-)が基準電圧V′₍₊₎より低い
場合は抵抗R₁₃が開放となるが、輻射温度補正ス
イツチ８が切の場合は抵抗R₃が温度調節用ボリ
ユームR₂に直列接続されて設定温度ｔとなり、
輻射温度補正スイツチ８が入の場合で、なおかつ
タイマー９の出力端子ToutにLow信号が出てい
る場合（設定時間T_Sに至らない場合）には抵抗
R₃と抵抗R₁₅の直列回路となる。よつて、この場
合の直列回路の合成抵抗は抵抗R₃より大きくな
つて設定温度がｔからｔ−t_bまで引き下げられ
る。ここで、第２のコンパレータ７の動作と輻射温
度補正スイツチ８の入・切およびタイマー９の状
態の組合せにより設定温度がどのように変化する
かを表１に示す。 The present invention relates to a temperature control device for a heat exchange device such as an air conditioner equipped with a refrigeration cycle.The present invention mainly relates to a temperature control device for a heat exchange device such as an air conditioner equipped with a refrigeration cycle. The purpose is to obtain better livability and save energy by determining the timing of the value change. A temperature control device in a conventional air conditioner will be explained with reference to FIGS. 8 and 9. As shown in Figure 8, the conventional temperature control contents are as follows:
After the air conditioner was operated, the temperature once dropped to the set temperature and became stable, and no change in the set temperature was observed unless the set temperature was changed intentionally. Therefore, as shown in Figure 9, even though the room temperature T ₁ has reached the set temperature, the sensible temperature T ₄ does not reach the set temperature due to the radiant heat T ₂ and T ₃ from the walls and ceiling. The temperature is almost constant for the first time after a certain period of T _S minutes. Therefore, in order to maintain the optimal room temperature and sensible temperature, it is necessary to lower the temperature setting and then return the set temperature to the originally desired temperature after a certain number of _minutes . It was extremely inconvenient. Furthermore, when the room temperature reaches the set temperature and the compressor stops, the temperature in the differential chamber of the temperature control device rises, so the temperature rises due to the radiant temperature from the walls, ceiling, etc. and the temperature from the room temperature due to the compressor stopping. ,
It had the disadvantage of making you feel unnecessarily hot. Therefore, in the present invention, the above-mentioned drawbacks of conventional temperature control are eliminated, and for example, in the case of air conditioning, temperature control is performed that takes into account radiant heat from walls, ceilings, etc. in advance. It provides a comfortable environment. DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to FIGS. 1 to 4 of the accompanying drawings showing one embodiment thereof. First, the refrigeration cycle will be explained with reference to FIG. In the figure, 11 is an indoor heat exchanger, 12
13 is an indoor side blower, 13 is an outdoor side heat exchanger, 14 is an outdoor side blower, 15 is a compressor, and 16 is a capillary tube, and these constitute an air conditioner equipped with a well-known refrigeration cycle. Since the operation of this refrigeration cycle is well known, the explanation thereof will be omitted. Next, the temperature control circuit will be explained with reference to FIGS. 2 and 3. Here, as the cooling operation control, temperature control is performed by operating and stopping the compressor 15. In Fig. 2, 1 is an AC power supply, 2 is a power switch, 3 is a transformer, 4 is an electronic control unit, 6a, 6
b are contacts of electromagnetic switches, which are repeatedly turned on and off by the operation of the electronic control device 4 to operate and stop the outdoor blower 14 and the compressor 15. In addition,
12 is an indoor blower. Next, the contents of the electronic control device 4 will be explained with reference to FIG. In the figure, R ₁ is a temperature-sensitive resistance element such as a thermistor that detects the cooling load, and is connected to the indoor heat exchanger 11.
The temperature sensitive resistance element _R1 is connected in series with a series circuit consisting of a temperature adjusting volume _R2 and a resistor _R3 . 5 is the first comparator, the input terminal (+)
is connected between the temperature-sensitive resistance element _R1 and the temperature control volume _R2 , and the reference terminal (-) is connected to the middle of the series circuit consisting of resistors _R4 and _R5 . Further, the output terminal of the first comparator 5 is a transistor
Connected to the base terminal of Q ₁ via diode D ₂ . 6 is an electromagnetic switch connected to the collector terminal of the transistor _Q1 , which opens and closes the regular relay contact 6a shown in FIG.
It controls the operation of the 7 is a second comparator, the input terminal (-) of which is connected to the output terminal Tout of a timer ₉ , which will be described later, via a resistor R8, and also connected to the middle of a series circuit of a resistor _R9 and a resistor _R10 . , connect the reference terminal (+) to the resistor _R11 and the resistor
Connected to the middle of the R ₁₂ series circuit. This second
The output terminal of comparator 7 is diode _D4
is connected to the middle of the series circuit of the temperature control volume R ₂ and the resistor R ₃ through a series circuit of the resistor R ₁₃ and the temperature adjusting volume R 2 . 9 is a timer and the input terminal Tin is a resistor R ₁₄
and the radiation temperature correction switch 8, and the output terminal Tout is connected to the above-mentioned resistor _R8 .
input terminal (-) of the second comparator 7 via
It is connected to the. When the timer 9 reaches the set time T _S , the low signal of the output terminal Tout goes high.
It turns into a traffic light. 8 is the radiation temperature correction switch as mentioned above, and the HI of the output terminal Tout of the timer 9 is
The resistor _R13 is turned on and off by outputting a signal or a low signal. V _cc is a DC power supply, and the temperature-sensitive resistance element R ₁ , resistor R ₄ , resistor R ₇ , resistor R ₉ , resistor
It is connected to the power supply side of R ₁₁ , resistor R ₁₄ , electromagnetic switch 6 , diode D ₃ and timer 9 . _R6 , _R16
are each a resistor and _D1 is a diode. In the above configuration, the first comparator 5 is
When the input voltage V ₍₊₎ is higher than the reference voltage V _(-) , the transistor Q ₁ is turned ON, and in the opposite case, it is turned OFF. Further, the second comparator 7 is connected to the output terminal Tout of the timer 9 when the radiant temperature correction switch 8 is on.
If the HI signal is output (after the set time T _S ),
The output terminal Tout becomes open, and the input voltage V' _(-) of the second comparator 7 becomes higher than the reference voltage V' ₍₊₎ , and the resistor R ₁₃ is in the same state as grounded, and the resistors R ₃ and R ₁₅ and a parallel circuit with the resistor _R13 , which is connected in series with the temperature adjusting volume _R2 . Therefore, the combined resistance of the parallel circuit in this case becomes smaller than the resistance _R3 , and the set temperature is raised from t to t+t _a . Furthermore, when the input voltage V' _(-) is lower than the reference voltage V' ₍₊₎ , the resistor R ₁₃ is open, but when the radiant temperature correction switch 8 is off, the resistor R ₃ is the temperature adjusting volume R ₂ is connected in series to the set temperature t,
When the radiant temperature correction switch 8 is on and a low signal is output to the output terminal Tout of the timer 9 (when the set time T _S has not been reached), the resistor
It becomes a series circuit of R ₃ and resistor R ₁₅ . Therefore, the combined resistance of the series circuit in this case becomes larger than the resistance _R3 , and the set temperature is lowered from t to _ttb . Here, Table 1 shows how the set temperature changes depending on the combination of the operation of the second comparator 7, the ON/OFF state of the radiant temperature correction switch 8, and the state of the timer 9.

【表】ここで各抵抗の関係は、
R_１３・(R_３＋R_１５)
R_３＋R_１５＞R_３＞[Table] Here, the relationship between each resistance is
R ₁₃・(R ₃ +R ₁₅ )
R ₃ + R ₁₅ > R ₃ >

Claims

[Claims]

1 a temperature detector _R1 that detects the load temperature state;
Control devices 5 and 7 output operation control signals for the heat exchange device 15 based on signals from the temperature detector _R1 .
and a timer 9 that outputs an output signal for changing the set temperature when a preset time T _s elapses from the time of initial operation until the sensible temperature becomes almost constant, and the control device 5 and 7 operating point,
A set temperature range Δt consisting of a stopping point is provided, and before the load temperature state reaches the first stopping point of the set temperature range Δt, the sensible temperature at the initial stage of operation is set to the set temperature t by the control devices 5 and 7. The set temperature t is lowered to the first provisional set temperature t-t _b with a deviation of the minute temperature t _b to be corrected, and after the preset time T _s of the timer 9 has elapsed, the set temperature is returned to the set temperature during stable operation. Micro-temperature that corrects sensible temperature
A temperature control device that raises a set temperature t to a second provisional set temperature t+t _a with a deviation of t _a .