KR910005506Y1 - Constant temperature and humidity control circuit - Google Patents

Abstract

No content.

Description

Automatic control circuit of constant temperature and humidity

1 is a block diagram of an automatic control block processing of the present invention.

2 is a detailed circuit diagram of the heater heating device during the first step.

3 is a detailed circuit diagram of a compressor air conditioner unit during the first view.

4 is a detailed circuit diagram of the dehumidification and humidifier unit during the first step.

5 is a detailed circuit diagram of the humidifier water tank level level and the drop detection and removal unit during the first step.

6 is an automatic operation control circuit diagram of the present invention.

7 is a detailed circuit diagram of the automatic holding unit applied to the present invention.

* Explanation of symbols for main parts of the drawings

1: temperature sensor 2: humidity sensor

3: Falling water detector 10: Heater heating unit

11-14, 24, 25: temperature sensing comparison circuit 15-18, 26, 27, 37, 40: chattering circuit

23: compressor air conditioner circuit

28,29,51: relay drive circuit for solenoid valve

30, 31, 55, 61: time delay circuit 32, 33: relay drive circuit for compressor

35: dehumidification circuit unit 36,37: humidity sensing comparison circuit

38: dehumidification driving circuit 41: moisture absorber relay driving circuit

50: water level control unit 52: flip-flop circuit

53: water level detection driving circuit 54: eliminator

56: nicoter circuit 57: divider circuit

58: reset and relay drive circuit 59: auto holding circuit

60: rectifier circuit 62: auto holding relay drive circuit

63: safety switching circuit 100: electronic control board

R ₁ -R ₈₆ : Resistor I ₁ -I ₁₂ : Inverter

LD ₁ -LD ₁₁ : Light emitting diode Q ₁ , Q ₂₁ : Transistor

D ₁ -D ₃₂ : Diode C ₁ -C ₁₂ : Capacitor

NA ₁ -NA ₂ : NANDGATE VR ₁ -VR ₃ : Variable resistor and Semi-fixed resistor

OP ₁ -OP ₄ : Comparative amplifier RY ₁ -RY ₁₃ : Relay

H ₁ -H ₄ , HU: Heater S ₁ -S ₃ : Solenoid valve

VD, VC: Power input terminal H: High electrode

L: Low electrode Ra: Regulator

The present invention is a constant temperature and humidity controller that unifies each function of the dehumidifier, humidifier, heating device and air conditioner, and in particular, the room temperature is always heated and cold alternately operated by a step heater heating device and a compressor cooling device to maintain a constant constant temperature state. The present invention aims to provide an automatic control circuit for a constant temperature and humidity controller in which a humidifier for automatically supplying water by means of a water level control level to provide heat-evaporating moisture.

More specifically, when the room temperature rises above the set temperature, the room temperature is lowered by a general refrigerating cycle in which only the compressor is in operation, and when the room humidity is higher than the set humidity, the solenoid valve related to the compressor is opened. While controlling the dehumidification at the same time by the refrigeration cycle, the compressor is stopped when the room temperature and humidity are lower than the set temperature and humidity. It is a circuit that controls operation to provide autonomously.

Conventionally, there was a control circuit which installed only an air-cooled condenser for heat recovery in the evaporator of a constant temperature and humidity chamber to perform constant temperature and humidity. Therefore, the air through the evaporator can not be further heated by the air-cooled condenser by the self-condensation temperature has been a problem that the compressor continues to operate.

In other words, the heat recovery air-cooled condenser itself lacks heat, so if the room temperature is very low, such as winter, even if the heater is operated immediately, the compressor will continue to operate. As a result, the power wasted, and the operation wear rate of the compressor was also easily lowered, causing a relatively economic loss.

Therefore, the present invention has been made to solve the general defects of the prior art is to provide an accurate and ideal control of the operation of the constant temperature and humidity combined with a heater, humidifier, dehumidifier and air conditioner.

Another object of the present invention is to solve the user's inconvenience in water supply by providing a water level level detection circuit to automatically supply the water vaporized into the moisture by the humidifier.

Another object of the present invention is that the reheat condenser has a weak condensation temperature and the reheat condenser cannot raise the indoor temperature at all lower than the set temperature. Therefore, the compressor sending refrigerant gas to the reheat condenser does not operate. It is to control operation so that room temperature can be gradually raised.

Another object of the present invention is equipped with a removal device (eliminator) circuit to detect the stockpile generated in the compressor itself due to the temperature difference of the outside temperature during cooling and to immediately evaporate, dehumidifying the device itself as well as the source of the malfunction It is intended to provide to prevent in advance that will be more apparent if described in more detail with reference to the accompanying drawings.

The thermostatic humidifier operation control circuit of the present invention shown in FIG. 1 is block-processed, and the heater heating circuit 10 and the compressor cooling device circuit unit 23 in which cooling and heating are performed in association with the temperature sensor 1 and The humidifier circuit part 34 driven by the humidity sensor 2 and the dehumidification circuit part 35 interlocked with the compressor air conditioner circuit part 23 when the indoor humidity is high, and the water tank of the humidifier associated with the humidification circuit part 34. It is composed of a water level level control unit 50 to control the water supplied automatically and the eliminator unit 54 to evaporate the falling water stored during cooling.

To describe in more detail the configuration of each block-processed function as described above, as shown in Figure 2 heater heater circuit portion 10 is formed in parallel between the temperature sensor 1 and the variable resistor (VR ₁ ) (A) (b) (c) (d) are classified into four stages so as to be heated in stages according to the set temperature of the variable resistor VR ₁ , for example, the heater heating circuit 10 of (a). The resistor (R _1- R ₃ ) is connected to the input non-inverting terminal of the comparison amplifier (OP ₁ ), the inverting terminal is connected to the resistance (R ₄ ) between the variable resistor (VR ₁ ) and the temperature sensor (1). The temperature sensing comparison circuit 1 connected through the resistor and a resistor R ₆ and a diode D ₁ are formed in parallel on the output side of the comparison amplifier OP ₁ , but one side of the capacitor C ₁ is grounded. via a resistor (R ₇₎ at the output side of the inverter (I ₁₎ chattering circuit 15, and the inverter (I ₁₎ was connected to the input terminal of the connected to the base of the transistor (Q ₁₎ On the collector side, a light emitting element LD ₁ connected with an input power supply Vc side resistor R ₆ and a diode D ₂ and a relay Ry ₁ connected to another input power supply Vd side are connected to each other. Combination of the relay drive circuit 19, and reference numerals R ₅ and R ₉ are resistors.

In addition, since the heater heating circuit 10 of steps 2, 3, and 4 is the heater heating device circuit 10 having the same configuration as described above (a), it will be omitted below.

Next, in the compressor cooling device circuit 23 connected between the temperature sensor 1 and the variable resistor VR ₁ , two compressors, which are not shown in the drawing, are step-controlled as shown in the detailed circuit diagram of FIG. 3. The air conditioner circuit 23 of (e) is classified into (e) and (f) as much as possible, and the same temperature sensing comparison circuit 24 and chattering circuit as (a) of the heater heating circuit unit 10 described above are provided. (26), the solenoid valve opening and closing relay drive circuit 28 and the time delay circuit 30 for delaying the compressor operation time for a predetermined time, and the compressor start relay drive circuit 32 is connected in this order, Since the compressor cooling device circuit 23 of step (f) is comprised similarly to the circuit of (e) mentioned above, it abbreviate | omits below.

Next, in the compressor air conditioner circuit 23 processed in each block as described above, the collector side of the transistor Q ₅ and the diode D _{18 in} the solenoid valve opening and closing relay driving circuit 28 of (e). The dehumidification circuit unit 35 to be connected is operated in parallel with the compressor during the cooling operation. The dehumidification circuit unit 35 includes a humidity sensing comparison circuit 36, a chattering circuit 37, and a dehumidification driving circuit 38 as shown in the detailed circuit diagram of FIG. 4. However, the humidity sensor (2) directly connected to the variable resistor (VR ₂ ) to the input terminal non-inverting terminal of the comparison amplifier (OP ₇ ) of the humidity sensing comparison circuit 36 with a resistor (R ₅₂ ), and then inverted Resistor R ₄₅ , R ₅₀ , R ₅₁ is connected to the terminal and is connected to the collector side of transistor Q ₉ so that dehumidifier light emitting device LD ₇ is turned on.

The humidity sensor 2 and the variable resistor VR _{2 are} connected to the dehumidification circuit part 35 and the humidification circuit part 34 which is driven to provide moisture to the room is always provided to maintain a constant humidity state in the room. The humidity sensing comparison circuit 39, the chattering circuit 40, and the relay driving circuit 41 for the humidifier are sequentially connected so as to lead to the Humidistat, and the light emitting element LD ₈ is turned on in the humidifier. Q ₁₀ ) is connected to the collector side.

In the above state, the water level level controller 50 for automatically supplying the humidified metal vaporized water is a drive-end transistor Q ₁₀ (Q ₁₁ ) of the relay driving circuit 41 as shown in the detailed circuit diagram of FIG. 5. Flip-flop circuit 52 consisting of a relay driving circuit 51 for opening and closing a water supply solenoid valve and a NAND gate NA ₁ -NA ₃ through a resistor R ₆₅ at a base terminal C interconnected by emitters The high electrode (H) and the low electrode (L) of the water level sensing driving circuit (53) are connected to each base side of the transistors (Q ₁₃ ) and (Q ₁₄ ), and the input power supply terminal is connected between the two collectors. Resistor R ₆₈ and R ₆₉ are respectively connected via (Vc) reference, and each emitter side thereof is connected to one input terminal side of the NAND gates NA ₁ and NA ₃ .

In addition, the eliminator unit 54 connected through the resistor R ₇₂ at the output terminal of the NAND gate NA ₂ of the flip-flop circuit 52 is the flip-flop circuit 52 of the NAND gates NA ₁ -NA ₃ . The delay circuit 55 for delaying the operation for a predetermined time according to the output state, the nicotine circuit 56 for detecting evaporated water during cooling and operating the divider circuit 57 combined with one signal, and driving In case of an error during the alarm, the alarm state and the reset and relay drive circuit 58 combined with the alarm AR and the buzzer B and the predetermined pressure of the compressor during cooling are connected to the self-blocking function due to high pressure or low pressure. Are constructed in combination.

Next, as a squash control circuit for instructing the operation of the circuits of the above-described functions as shown in the sixth diagram, two preheating heaters for connecting the primary of the power transformer TR ₁ between the power supply side R and T, (CCH) and power on / off pushbuttons (pb-a) (pb-b) thermostat (TS), haute switch (As), reset a contact (BL) and broa to release the rich after power on A connection point P ₁ leading to BL is connected to the relay holding side of the auto holding circuit ₄ of the auto holding circuit unit 59 shown in FIG. 7, and at the connection point P ₂ of the electronic control board 100. It is connected to the power supply side (R).

On the other hand, relay (RY _1- RY ₄ ) a contact terminal (H) of (a) (b) (c) (d) relay driving circuits 19-22 of the heater heating circuit unit 10 shown in FIG. _1- H ₄ ) and the magnetic switch MS ₁ , MS ₂ , MS ₃ , MS ₄ connected to the respective ones, and (e) (f) relay drive circuit of the compressor air conditioner circuit section 23 shown in FIG. 3. The solenoid valves SV ₁ and SV ₂ connected to the relay Ry ₅ and Ry ₇ a contact terminals S ₁ and S _{2 in the} furnaces 28 and 29, and (e) (f) In the compressor relay driving circuits 32 and 33, the magnetic switches MS ₆ and MS ₇ connected to the relays Ry ₆ and Ry ₈ a contact terminals C ₁ and C ₂ , respectively, The buzzer BZ connected to the relay Ry ₁₁ -Ry ₁₂ a contact terminal AR of the reset and relay driving circuit 54 having the alarm AR and the buzzer BZ of the eliminator unit 54 shown. B) BZ connected to the relays Ry ₁₁ -Ry ₁₂ a contact terminal AR of the reset and relay driving circuits 58 and the humidification circuit unit 3 shown in FIG. The magnetic switch MS ₅ connected to the relay RY ₉ a contact terminal Hu of the relay drive circuit 41 of FIG. 4 and the relay drive circuit of the water level control unit 50 shown in FIG. 51 connects the solenoid valve SV ₃ connected to the relay Ry ₁₀ a contact terminal S ₃ to the AC power source T, and then connects the solenoid valve SV ₃ to the power source side T of the electronic control board 100. It is connected.

In addition, when the predetermined set pressure of the compressor is less than the set (LP ₁ ) (LP ₂ ) and the setting abnormal (HP ₁ ) (HP ₂ ), the contact is switched to the safety switching circuit 63 to block the air generation, and the compressor and A condenser fan lamp contact CF ₁ (CF ₂ ) indicating whether the cooling fan of the associated heat exchanger is operated and a blower lamp BL indicating the operation state of the blower are connected to the (+) end of the electronic control board 100. , reference to the (F) is Pugh USE (LD ₁ -LD ₁₀₎ is applied to each functional circuit and the light emitting element to be lit during operation, (Vc) (Vd) is the input power source side terminal, (R) is a resistor.

The present invention configured as described above will be described in relation to the action and effect as an embodiment.

When the room temperature is higher than the set temperature determined by the variable resistor VR ₁ , the resistance of the temperature sensor 1 is lowered. Therefore, the voltage input to the non-inverting terminal of the comparison amplifier OP ₁ is applied to the inverting terminal. It is higher than the input voltage, and eventually the output state through the comparative amplifier OP ₁ becomes a high potential.

On the contrary, when the room temperature is lower than the set temperature, the output of the comparison amplifier OP ₁ becomes low potential.

However, there is a potential difference in which the temperature values set in (b), (c) and (d) for (a) are respectively driven.

Here, the operation potential driven by the temperature sensor 1 for detecting the indoor temperature is the comparison amplifier OP ₅ (OP ₆ ) of the compressor cooling device and the external circuit unit 23, and the comparison amplifier of the heater heating circuit unit 10 ( OP ₁ -OP ₄ ) temperature setting input condition is set differently according to setting resistance value operated in summer or winter.

That is, according to the set temperature of the variable resistance (VR ₁ ) by the change in the room temperature to determine whether to perform the heating or cooling to perform parallel operation according to the season.

In such a state, for example, when cooling in the summer, when the room temperature is higher than the set temperature, the temperature detection (1) for the other set temperature, the set voltage by the variable resistor (VR ₁ ) to the temperature sensing comparison Comparing the comparison amplifier (OP ₅ ) (OP ₆ ) of (24) and (25), the voltage by the temperature sensor 1 is amplified by a value higher than the set voltage, so that the relay drive circuits 32 and 33 of the compressor Since the contact point is applied to the relay Ry ₆ (Ry ₈ ) and the contact point is transferred to the magnetic switch MS ₆ (MS ₇ ) (FIG. ₆ ) connected to the load side, two compressors not shown in the drawing are operated. In this case, when two compressors which are step-controlled are driven, the detected temperature voltage input to the comparison amplifiers OP ₅ and OP _{6 of} the temperature sensing comparison circuits 24 and 25 reaches a set upper limit temperature condition. It is output as a signal.

At this time, the inverter is inverted to a high signal by the inverter I ₅ (I ₇ ) of the chattering circuits 26 and 27 and is applied to the next relay driving circuit 28 and 29 so that the relay Ry ₅ (Ry ₆ ) contact point is used. As the valve is closed, the solenoid valve S ₁ and S ₂ are opened to remove (discharge) the residual pressure remaining in the compressor itself.

The signal is then delayed by the delay constant RC minutes of the resistors R ₃₅ (R ₄₄ ) and the capacitors C ₆ (C ₈ ) of the delay circuits 30, 31 and then the inverter I ₆ ( I ₈ ) is inverted to a high signal again to drive the relays RY ₆ and RY _{8 of the} compressor driving circuits 32 and 33, so that the load side compressor simultaneously with the driving point emits light emitting elements LD ₅ and LD _6. ) Lights up to indicate that it is in operation.

In the state in which the compressor is operating, the humidity distribution in the room is excessively raised, so the dehumidification circuit part 35 shown in FIG. 4 is operated at the same time.

That is, when dehumidification is performed, but the humidity distribution of the room detected by the humidity sensor 2 becomes higher than the upper limit of the set humidity of the variable resistance VR ₂ for humidity setting, the humidity sensing comparing circuit 36 and the chattering circuit ( 37) and the dehumidification driving circuit 38 is operated.

In this case, the dehumidifying light emitting device LD ₇ is turned on to indicate that the dehumidification is being performed. After the dehumidification is completed, the dehumidifying light emitting element LD ₇ is returned to its initial state, and the two compressors stop the operation and the relay (Ry). _On the load side associated with the contact of _5- Ry ₈ ), the humidification sensor 2 returns to the next detection preparation step.

The above indicates that parallel operation control regarding cooling and dehumidification of the constant temperature and humidity in summer is carried out, and then, when the indoor temperature in winter is lower than the set temperature set by the variable resistor VR ₁ for temperature setting described above, the temperature sensor In the electronic control circuit 100 connected to (1) without turning on the compressor air conditioner circuit 23, the first stage heater drive circuit (a) of the heater heating circuit unit 10 is turned on to incubate a low temperature in the room, Even if the first stage heater (not shown) of (a) fails to raise the predetermined room temperature, the two-stage heater driving circuit (b) is driven to further increase the increased temperature while the three-stage and four-stage heater driving circuits Operate (c) (d) to raise the room temperature. Then, when the room temperature rises, the electronic control board 100 instructs to gradually open the current flowing in the heater driving circuits (a) (b) (c) (d) step by step.

The reason for raising the room temperature lower than the set temperature as the staged heating device is because the condensation temperature of the reheat condenser, which is not shown, is weak, and thus the room temperature lower than the set temperature cannot be increased. In this case, since the indoor temperature cannot be increased at all lower than the set temperature, the compressor is not operated, and the indoor temperature is kept constant as a staged heating device.

Therefore, the heater driving circuit (a-d) of the four stages that do not depend on the reheat condenser raises the indoor air at a low temperature, thereby excluding power consumption and abrasion rate caused by the continuous operation of the compressor.

Then, when each temperature reaches a differently set temperature, the heater driving circuit (a-d) of step 4 gradually stops current.

Therefore, the constant temperature is set to the temperature value set according to the room temperature state is automatically repeated by the temperature sensor (1).

If the indoor humidity is lower than the humidity set next, the humidity sensed by the humidity sensor 2 is the set resistance R of the humidity comparison circuit 39 regardless of the operation of the heater driving circuit (a-d) of the four stages. ₅₇ -R ₅₉ ) is continuously compared to determine whether the output of this comparison amplifier OP ₈ is high or low.

At this time, when the output of the comparative amplifier OP ₈ set by the resistor of the humidity sensor 2 to provide the appropriate humidity distribution in the room by the variable resistor VR ₂ becomes the low signal, the inverter through the chattering circuit 40 The magnetic switch MS ₅ is inverted to a high signal by (I ₁₀ ) and applied to the Schmitt-trigger transistor Q ₁₀ of the hygroscopic relay driving circuit 41 to magnetize the hygroscopic relay Ry ₉ . (Fig. 6) is turned on.

At this time, the light emitting device LD ₈ indicating that the humidification is started while the provision of the room is started.

After that, when the humidity supplied to the room reaches an appropriate level and becomes higher than the set humidity, the output of the comparative amplifier OP ₈ becomes a high signal, and the current is cut off at the coil of the hysteresis relay Ry ₉ to complete the humidification. However, re-humidification is always performed when the room is dry, but the heater heating apparatus (a-ra) is operated in parallel or simultaneously with the operation.

In the humidifier closely related to the humidifying circuit 34, a certain amount of water is always stored, but the water level is adjusted to supply or stop water because the stored water gradually decreases as it is vaporized during humidification. Is provided with a fine current always flows in the high electrode rod (H) and the low electrode rod (L) of the water storage tank in the humidifier not shown in the drawing.

At this time, when a lot of water is evaporated while the water is reduced to the lower limit of the humidifier water tank, a signal that the water is insufficient in the low electrode rod L is a flip-flop circuit 52 through the transistor Q ₁₄ of the water level detection driving circuit 53. Is applied to the NAND gate NA ₃ , and is connected to the NAND gate NA ₂ and another NAND gate NA ₁ associated therewith, thereby turning on the transistor Q ₁₂ of the relay driving circuit 51.

At the same time, the contact is closed to the water valve relay Ry ₁₀ coil to open the solenoid valve S ₃ (FIG. 6), and from this time, supply of insufficient water in the humidifier tank starts.

However, in the above, the signal applied to the relay driving circuit 51 is also applied to the above-mentioned humidification circuit part 34 side, but is self-blocked by the Schmitt trigger circuit Q ₁₀ (Q ₁₁ ), so that each humidification circuit part 34 is provided. Does not drive any more.

After the replenishment of water reaches the high electrode (H), the output signal of the low electrode (L) through the transistor (Q ₁₃ ) and the NAND gate (NA ₁ ) is inverted and eventually flows to the relay (Ry ₁₀ ) coil for the water valve. Since the current is cut off, the solenoid valve (S ₃ ) is closed to stop the water supplied.

Here, the signal output to the NAND gate NA ₂ when the error occurs while the water is supplied irrespective of the water supply or the signal signal that is sensed by the low electrode L and the high electrode H is the eliminator 54. After a predetermined time delay in the delay circuit 55, the transistor Q ₁₈ of the divider circuit 57 is driven and applied to the alarm and buzzer relay driving circuit 58, and the alarm lamp and the buzzer BZ of FIG. Will be activated.

In addition, in the alarm and buzzer relay driving circuit 58, when two compressors (not shown) are operated during the summer, the alarm and buzzer relays are connected to remove the falling water naturally generated by the outside air temperature difference.

That is, Nikko emitter signals detected by the drip water detection sensor 3, the circuit 56 has adjustable sensitivity to variable resistor (VR ₃₎ in a high humidity condition (VR ₃₎ kehan other transistor of following the divider circuit 57 The blower b contact BL is applied to another blower driving Ry ₁₁ coil of the alarm and buzzer relay driving circuit 58 described above through Q ₁₉ and Q ₂₀ . ) Closes the broa lamp (BL) is turned on to drive the blower not shown.

In addition, in the safety circuit 63 related to the compressor's own pressure, when two compressors are driven to some extent, when a predetermined pressure drops, the contact point (a) falls below the lower limit set by the low press (LP ₁ ) (LP ₂ ). , a ') is called (c, c'), and the (c, c ') contact terminal is (d, d') high press (HP ₁ , HP ₂ ) contact terminal (d, d '). A short circuit begins to replenish the insufficient compressor pressure.

Then, when the pressure supplemented exceeds the upper limit set by the high press (HP ₁ , HP ₂ ), the contact terminals (ace) and (a'-c'-e ') return to their normal states.

However, when the compressor pressure is insufficient and it continues to operate above the upper limit set by the high press (HP ₁ , HP ₂ ), that is, when it is kept closed by the contact terminals (cd) and (c'-d '), the resistance of FIG. (R ₅₃ , R ₅₄ ) and diodes (D ₂₃ , D ₂₄ ) are applied to the relay (Ry ₁₂ ) coil of the relay drive circuit 58 for alarm and buzzer, so the alarm AR and the buzzer BZ of FIG. ) Is turned on to indicate that an error has occurred.

When the reset switch RE / S of FIG. 5 is pressed during the operation of the buzzer BZ, the buzzer BZ turns off and the alarm lamp AR continues to light until the error is cleared. It is automatically stopped.

As a result, it is easier to control the operation of the capacity reducing operation according to the indoor load fluctuation by independent operation control involving manual operation.

The following are the seasons in summer and winter in order to fully control the amount of heat generated at the place even when there is no operator operating the thermo-hygrostat installed in the computer room with high sensible heat or the precision measuring room or the precision instrument room with relatively high sensible load. Regardless of the humidification, heating, cooling according to the indoor load, and even dehumidification, the auto-holding function is operated so as to operate with one-touch automatic operation. Accordingly, when the auto switch A / S is turned on with the pushbutton switch pb-b turned off, as shown in the sequence operation control circuit shown in FIG. The signal is converted into direct current through the rectifying circuit 60 of the auto holding circuit unit 59 and applied to the voltage regulator Ra and the delay circuit 61, and inverted by the Schmitt inverter I ₁₂ as a relay driving circuit ( The relay coil Ry ₁₃ of 62 is excited.

At this time, the contact of the relay Ry ₁₃ is closed, and the signal is transmitted to the auto holding terminal T ₄ of the electronic control panel 100.

However, in the state in which the above-described push button pb-b is turned off, since the main power R is not applied to the auto holding terminal T ₄ of the electronic control panel 100, all the next functions are stopped. At the same time that the auto switch A / S is turned on, all control instructions are automatically performed in the electronic control panel 100 according to the corresponding indoor condition load so that all functions are operated by the auto holding circuit unit 59.

Of course, at this time, the lighting element LD ₁₁ of the delay circuit 61 is turned on to indicate that the automatic holding circuit 59 is being operated.

Therefore, even if there is no operator to operate the thermo-hygrostat with each function concentrated, the auto-holding function to control by auto switch (A / S) controls and instructs to operate all the thermo-hygrostats in parallel. When switching to manual operation, turn off the auto switch (A / S) that is in operation automatically, and turn on the push button switch (pb-a), the operation state of each function described above is changed to the constant temperature by manual operation. The humidifier is running.

As described above, according to the present invention, the user can easily check the normal operation of the thermo-hygrostat by the individual operation indicators that make it possible to identify whether each power load is operated or stopped, and each function requires an operation. The use of over-current electricity in the motor protects against input phase loss and overload.

In addition, if the room temperature is significantly lower than the set temperature (winter season), the compressor and the reheat condenser are stopped, and then the room temperature is raised as a step-by-step heating device to control the unreasonable operation of the compressor, and water vaporized into moisture. When this is insufficient, it is automatically supplied by the water level level control unit to solve the inconvenience of the user, as well as stockpile generated in the compressor itself due to the temperature difference of the outside temperature during cooling, and falling water generated by the humidifier. By detecting and evaporating immediately, the device itself is designed to extend the life of the device and get the user's confidence.

Claims (1)

Cold with a conventional temperature sensor (1). In the constant temperature and humidity chamber in which the heating is operated in parallel, the heater heating circuit 10 related to the heating connects the resistors R _{1 to} R ₃ to the input non-inverting terminals of the comparative amplifier OP ₁ , and the inverting terminals are variable. A temperature sensing comparison circuit 11 connected between the resistor VR ₁ and the temperature sensor 1 via a resistor R ₄ , and a diode D ₁ and a resistor connected to the output side of the comparison amplifier OP ₁ . (R ₆ ) are formed in parallel, and the capacitor C ₁ grounded on one side is occluded so that the chattering circuit 15 connected to the input terminal of the inverter I ₁ and the resistor R ₇ at the output side of the inverter I ₁ are connected. Through the collector connected to the base of the transistor (Q ₁ ) through the light emitting element (LD ₁ ) connected to the input power (Vc) side resistor (R ₈ ), and the diode (D ₂ ) connected to another input power (Vd) side , a relay (Ry ₁₎ a heater heating circuit to the intermeshing connection in combination with a relay driver circuit for a heater (19) (10, a) is (b) (c) (d) Compressor air conditioner that is heated in stages during heating as the same circuit configuration, but (a) (b) (c) (d) has different temperature-determined operating potentials The circuit 23 includes a temperature sensing comparison circuit 24, a chattering circuit 26, a solenoid valve opening and closing relay drive circuit 28, and a time delay circuit 30 for delaying the operation time of the compressor for a predetermined time and a compressor starting. The relay drive circuits 32 are connected in sequence, and one compressor cooling device circuit section 23 (e) has the same circuit configuration as the other (f), and is controlled by the coral step during cooling, but (e) and (f) Each of the temperature set operating potentials of the dehumidification circuit part is composed of a humidity sensing comparison circuit 36, a chattering circuit 37 and a dehumidification driving circuit 38 so as to be interlocked with the compressor cooling device circuit part 23 when the indoor humidity is high. Humidity sensor (2) on one side connected with (35) In connection with the other humidity sensing comparison circuit 39, the chattering circuit 40 and the humidifier circuit section 34 consisting of a humidifier relay drive circuit 41 is connected, supplying water vaporized by the humidification circuit section 34 The level sensor driving circuit 53 of the level controller 50 is a resistor R ₆₅ at the base terminal C connected to the Schmitt trigger circuit Q ₁₀ and Q ₁₁ of the humidifying circuit 34. High electrode (H) of the water level detection drive circuit 53 connected to the water supply solenoid valve opening and closing relay drive circuit 51 and the flip-flop circuit 52 consisting of NAND gates (NA ₁ -NA ₃ ) through And the low electrode L are connected to each base side of the transistors Q ₁₃ and Q ₁₄ and interposed resistors R ₆₈ and R ₆₉ between the two collectors on the basis of the input power supply terminal Vc. becomes connected, each of the already connected with the input side of the NAND gate (NA ₁₎ and (NA ₂₎ side emitter And a flip-flop circuit (52 of the flip-flop circuit 52, NAND gate Eli mineyi taboo 54 at the output terminal of the (NA ₂₎ is connected via a resistor (R ₇₃₎ of the NAND gate (NA ₁ -NA ₃₎ The delay circuit 55 for delaying the operation for a predetermined time according to the output state, the nicoter circuit 56 for detecting the water stored during cooling, and operating the jalke and the divider circuit 55 through the time delay circuit 55. 57), the reset side of the circuit 57 is coupled to a buzzer (BZ) coupled to the alarm when the constant pressure of the compressor is formed at a fixed state when cooling, and when an error occurs during operation. Automatic control circuit of the thermo-hygrostat, characterized in that configured by connecting a relay drive circuit (58).