JPS58142136A - Controlling circuit for air conditioning - Google Patents

Abstract

PURPOSE:To enable to remote-control the controlling circuit with a single knob and consequently improve the operational convenience by a method wherein various functions such as temperature regulation, fan speed controlling, change- over of cooling and heating and the like are all integrated into electronic circuits and the electronic circuits are associated with one another so as to collect them into the single controlling circuit. CONSTITUTION:A cooling-heating change-over circuit 5 is so constituted as to switching a four way valve by turning a relay 11 ON/OFF in response to the output of an operational amplifier 9, which is issued by accompanying with the operation of a variable resistor 2. In addition, a fan speed controlling circuit 6 is so designed as to change-over between the high speed side and low speed side of a fan motor 19 by controlling a relay 18 by means of the output of an operational amplifier 13, which compares the output of the variable resistor 2 with the set value determined by semi-fixed resistors 15 and 20 selectable on heating and cooling modes. Furthermore, similarly a compressor controlling circuit 7 is so constituted as to control a compressor motor 27 by controlling a relay 26 in response to the output of the variable resistor 2.

Description

[Detailed Description of the Invention] The present invention is based on cold stimulation Ntl? ! The present invention relates to the Il111 circuit, and particularly relates to a heating and cooling control circuit used in a heat pump single-power heating and cooling system that includes a four-way switch 1e, a compressor, and a fan for blowing cold and hot air.

Like F/Yo fever, I? Nde method air conditioning system is well known Q
There is, and the air-conditioning system #1GL used for it is also completely installed. However, in order to control heating and cooling, temperature adjustment,
It includes various functions such as fan speed control, heating/cooling switching, restart delay timer, etc. In conventional heating/cooling control, these functions are provided separately. Therefore, each button had to be operated separately, which was inconvenient.

The purpose of the present invention is to eliminate such inconveniences in conventional heating and cooling control.
They are all made into one child circuit, each associated with a υ circuit r, and combined into the same control circuit, and the single knob Q stiffness control circuit is Q-shaped so that it can be remotely controlled.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. The same reference numerals in each figure represent the same elements τ.

FIG. 1 shows the operating unit for remote control according to the present invention.
Heating operation is performed by the wind needle control cape and the ability to stop the cooling/heating operation, and when the heating temperature is turned further, the heating temperature rises to high, and when you turn it to the end of "strong", the fan speed increases to the highest. As a result, the air volume increases and the room temperature further rises by F.Also, cooling operation is performed by turning counterclockwise from the "1OFF" position in the figure, and as with heating operation, the terminal 1
If you turn it all the way to ``HIGH'', the air volume will reach the maximum and the room temperature will drop further.Figure 2 shows the internal structure of the operating section shown in Figure 1. 1 and...
3 is installed. When knob 1 is in the OFF J position, the switch 3 turns off the microswitch 4, and when knob 1 is turned clockwise or counterclockwise from the OFF J position, the microswitch 4 is turned on. Ru.

FIG. 6 is a circuit diagram showing the power supply section, in which the primary winding of the transformer T is connected to the external AC (connected to the source V, looking into the AC) through the microswitch 4. v is also connected to 14 external AC sources vK via 4 microswitches, and C
There is. In addition, the two secondary windings of the transformer R are equipped with a rectifier R.
and R2 are connected to each other. θl−θl, θ2
-82 are the DC output terminals of these rectifiers R and R2, respectively, and output the DC creep pressures Bl and x2.

FIG. 4 is a 1jjl road diagram showing the heating and cooling control circuit of the present invention. Block 5 surrounded by a dashed line is a heating/cooling switching circuit, block 6 is a fan speed control circuit, block 7 is a compressor control circuit, and block 8 is an air conditioner door restart delay timer. Also, v'-v' is intersection/7!
Power input terminal, 81'j1', 82'-62
' is a DC brazing source input terminal and is connected to the output terminals v, e, e, θ, and -82 in FIG. 6, respectively.

First, the heating/cooling switching circuit 5 will be explained. Variable resistor 2
A direct pressure proportional to the rotation angle of the 0-rotation axis is applied from the movable terminal of the variable resistor 2 to the ←) 4 elements of the variable resistor 9 that constitutes the comparator circuit. Knob 1 is set so that the variable resistor 20 terminal is at approximately the center of its travel path as shown in Figure 4.
Assuming that the JO position is in the 1st position, turning the knob 1 clockwise from the "OFF" position will move the variable resistor 20 terminal in the direction F in Figure 4, and turning it counterclockwise will move it to the F direction in Figure 4. Move on! 1
11J1-.

When the movable terminal of the straddle resistor 20 is at a position 5b closer to the center point than the illustrated center point, that is, when the knob 1 is set to OFF
When the knob 1 is in the heating control position clockwise from the 4 position, the relay 11 is energized, and when it is in the -F position from the center point, that is, when the knob 1 is in the cooling control position, the relay 11 is energized. Semi-fixed resistor 1 so that relay 11 is deenergized
Set the operating point of the comparator circuit at 0 and lock. When the relay 11 is energized, its contact 11-1 is closed and the four-way valve 12 is switched to the heating mode, and when it is de-energized, the contact 11-1 is opened and the four-way valve 12 is switched to the cooling mode.

Next, the fan speed control circuit 6 will be explained in detail.

The four output voltages from the movable terminal of the variable resistor 20 are also applied to the (-) four terminals of the operational amplifier 13 in this circuit. In this operation, the operating point of the amplifier 13 is set by the semi-fixed resistors 15 and 20, but let us consider the case where the heating mode is selected by the knob 1 first. In this case, as mentioned above, relay 11/)! - energized, J point 1l-2 (υb
Since the contact is open and the a contact is closed, the semi-fixed resistor 20 is shorted and 1.・Ru. When the switch 1 is placed in the "strong" position of the heating mode P, that is, when the variable resistor 20 and the moving dark spot are placed at the top end in FIG. 4, the output of the operational amplifier 13 is at a high level. Turn the knob 1 less than that and turn the LQ counterclockwise, and apply the voltage to the (→ end f-) of the operational amplifier 13. The operating point of the operational amplifier 13 in the mode is set by the semi-fixed resistor 15.When the output of the operational amplifier 13 is at a high level, that is, the knob is set to heating "strong".
In the case of the switch at position C, both inputs of the exclusive NOR circuit 160 become high level, and its output becomes high level.
Transistor 17 is turned on and relay 18 is energized.

] The high-speed side winding of the motor 19 is connected to the contact 18 of the relay 18.
Since the A contact side of -1 and the low speed side winding are connected to the B contact side, when the relay 18 is energized and the A contact of contact 18-1 is closed, the fan motor becomes high speed. Turn knob 1 to heating
Turn it slightly counterclockwise from "High".

Since the output of the operational amplifier 13 becomes low level, the output of the exclusive NOR circuit 16 becomes low level, and the transistor 1
7 is turned off, the relay 18 is deenergized, and its contacts 18-
Since the a contact of 1 is opened and the b contact is closed, the fan motor 1
9 is low speed.

Next, let us consider the case where the cooling mode is selected by knob 1. When cooling mode 1 is selected, relay 11 is deenergized and contact 11-1 is opened to open westward valve 1 as described above.
2 is switched to cooling mode. In addition, in another relay point 11-2, the a contact opens and the b contact closes, so the short circuit of the semi-fixed resistor 20 is released, and one input of the exclusive NOR circuit 16 connected to this b1 concubine point becomes a low level. Become.

In addition, since the short circuit of the semi-fixed resistor 20 has been released, the human power 4 voltage to the (+) 4 terminal of the operational amplifier 13 increases, and the heating mode p
In this case, even in the position of knob 1, where the I11 force was at a low level, it becomes a high level. Therefore, in cooling mode, set knob 1 to "strong".
In other words, when placed in the position shown in Figure 4, where the movement of the transformer resistor 2 is at its highest point, 1. When the output of the operational amplifier 13 reaches the IJ- level, turn the knob 1 counterclockwise from the "Strong" position. If you rotate it even a little,
In other words, when the movable contact of the variable resistor 20 is moved slightly from the uppermost end to the lower end as shown in FIG.
．． The operating point of the operational amplifier 13 in the cooling mode is set by the semi-fixed resistor 20 so that the i power is at a high level. In this case, it is natural to not move the semi-fixed resistor 15 that was adjusted earlier. By doing this, when the knob 1 is set to [strong J], both of the two inputs of the exclusive NOR circuit 16 become low level, so the output becomes high level, the transistor 17 is turned on, and the fan motor 19 is faster. Turn the knob at position 10 IW to a little over 1] and return the Q a little counterclockwise to 4-, and the output of the operational amplifier 13σ-) becomes - level as if the water was turned on, so the two inputs of the exclusive NOR circuit 160 One of them is at a low level and the other is at a high level, and the output of () becomes a low level, the transistor 17 is turned on, and the fan motor 19 changes to a low speed.

Next, the compressor control circuit 7 will be explained.

Now, consider a case where the cooling mode P is selected by turning the knob 1 slightly counterclockwise from the l-OFF J position at a predetermined room temperature. In this state, as mentioned above,
Relay 11 is deenergized and its contacts 11-1 are opened,
The four-way valve 12 is switched to cooling mode. Also, in the relay contact 11-3, the a contact is opened and the b contact is closed. In this state, the output 77 of the operational amplifier 22 is at a low level, but even if the output 77 of the operational amplifier 22 is at a low level, the voltage applied to the ←) input of the operational amplifier 22 is low.
The operating point of the semi-fixed resistor 23'Q operational amplifier 22 is set so that the output becomes high level when the voltage is F. When the output of the operational amplifier 22 takes a low level in this way,
Exclusive NOR circuit 2402 human power both become 1 and 0- level, so its output becomes...I level,
The transistor 252 is turned on and the C relay 26 is activated, the contact 26-1 of this relay is closed, and the normally closed point 42-1 of the relay 42, which will be described later
Cooling operation is performed by rotating the .

In this state, when the room temperature drops due to one cooling operation, the resistance value of the thermistor 28 increases, and the first position of point 29 increases, so the voltage applied to the ←) input of the operational amplifier 22 becomes low.
The output becomes... level. Then, one side of the exclusive NOR circuit 2402 is at /J''-... level, and the other side is at low level, so its output becomes low level, energizing the relay 26 and opening the main point 26-1. Q/7
'Lutusa 27 stops.

It is easy to understand that since the voltage applied to the input of the input → operational amplifier 22 rises and its output becomes a low level, the height 27 rotates again in the same way as when it was turned on. When the compressor 27 is turned on and the room temperature is low, the output/J of the computation unit 22 is - level 9. If the current value is 1 t, if it is turned a little more counterclockwise, the direct pressure applied to the (-) input of the operational amplifier 22 will rise by L, and the output (-J) will become low level, and as in the case of the above-mentioned G, the compressor 27 is set to 1, the cooling operation is resumed, and the room temperature is further lowered.In this way, turn the housing 1 further counterclockwise until it reaches the [strong] position.
If you move ff, not only the compressor 27 but also
The fan motor 19 also operates in the same way as before, so the air conditioner cools down even more rapidly and the room temperature drops to a predetermined minimum temperature. In this way, the cooling temperature can be selected directly depending on the position of the knob 1.

Next, regarding the case of heating mode, compressor control circuit 7
Explain the operation. First, at a predetermined temperature, the operational amplifier 22
The operating point is determined. When the knob 1 is rotated slightly clockwise from the OFF J position and the -C heating mode is selected, the pressure relay 11 is energized as described above and the four-way IP
12 is turned on. Also, a of contact 11-3 of relay 11
The point is closed, the b contact is opened, and the short circuit of the semi-fixed resistor 30 is released. Since the semi-fixed resistor 30 is inserted in series with the semi-fixed resistor 23, the (-1→input) of the operational amplifier 22 is
No) The applied direct pressure is the applied pressure to the (-) input, which is the knob 1.
0 In response to the lowering of the clockwise movement, the lowering of the current occurs. In this state, the voltage of the operational amplifier 220 becomes low level, but the semi-fixed resistor 30 is adjusted so that if the voltage applied to the (-) input of the amplifier 22 rises even slightly above that level, it becomes low level. Set the operating point of the operational amplifier 22. At this time, it is natural to not move the semi-rigid resistor 23 that was previously adjusted. Two people's power to the circuit 24/)t both become level, so the output also becomes high-rep, turning on the transistor 25, energizing the relay 26, rotating the conbrella 27, and heating operation:
Make them beg. The indoor temperature rises due to the heating spell.
(When the resistance value of the thermistor 28 decreases and the point 2901 rises, the voltage applied to the operational amplifier 22 (→1 voltage applied to the input rises to becomes a low level, turning off the transistor 25, thereby deenergizing the relay 26, and stopping the compressor 27.In this state, turn the knob 1 and then clockwise until the output of the NOR circuit 24 goes high. Then, in order to further raise the room temperature, the continuous heating operation of the compressor 27 is turned off, and as in the case, the fan motor 19 becomes faster and the room temperature rises rapidly.
Depending on the position, the heating temperature can be selected to the desired value.

Next, the operation of the timer circuit 8 will be explained. General Ki
However, if the compressor is turned on and off at intervals of less than 6 minutes, its performance will be adversely affected. Therefore, a circuit is required that prohibits turning on and off at intervals of 6 minutes or less. Now, the signal for turning on the compressor 27, that is, the exclusive NOR circuit 24 is turned on, and the timer circuit 8
One source of supply to the. -r In other words, when the transistor 31 is turned on, the Connley 340 light starts, so the d voltage applied to the (=) input of the operational amplifier 32 is temporarily lowered due to the quasi-voltage drop of the diode 33. and capacitor 3
When the charging of 4 is finished, the voltage increases to a certain value determined by the relationship between the resistors 35, 36, 37 and the power input 533. Instantly, due to the direct voltage divided by the resistors 38 and 39 and 1, when the capacitor 40 finishes charging, it becomes equal in magnitude to the source pressure E2 of the concave 1.

Now, at the moment when the transistor 31 turns on, the operational amplifier 32
(→in)E is lower than (+)injJ #S
If the resistors 38 and 39 are selected and installed so that the voltage is r, the moment the transistor 31 is turned on, the output of the operational amplifier 32 becomes . Rotate 27. At this time, relay 42-2 also closes A11 and short-circuits the series circuit of capacitor 40 and resistor 39, so act: J1 width device 32"l]-〇 input is (→Person J) L6 Low 1st place The output becomes - level, but the thyristor 41 remains on.Next, the exclusive NOR circuit 2
Once the output of 4 is low level, the compressor 27
Let's assume that it stops and then returns to a high level within a predetermined period of time, say 6 minutes. Exclusive NOR circuit 24
Simultaneously, the output of the transistor 31 is turned off, and the thyristor 41 is also turned off, and the relay 42 is deenergized, and the six points 42-2 of the relay 1 are opened and the point a is closed, so that the capacitor 34 is turned off. Discharge begins via the resistor 37, but the discharge time constant is selected so that the discharge does not end to the point where the output of the operational amplifier 320 becomes irregular at the moment the transistor 31 is turned on again within 6 minutes. If this is done, the output of the operational amplifier 32 will maintain a low level and will not turn on the thyristor 41 and therefore will not energize the relay 42, so the compressor 27 will not rotate. When 3 minutes pass in this state, the light weights of the capacitors 34 and 40 are both terminated, and the output of the (calculation) widening device 32 becomes the level, which turns on the thyristor 41 and energizes the relay 42.
I watched the rotation of Konobrera IJ-27 in the afternoon.

In this case, the timer circuit 8 does not operate if the E source supply to the timer circuit, that is, the conduction of the transistor 31 is turned off and then turned on within 5 hours, for example, 6 minutes. Therefore, rotation of the C connector 27 is not allowed, and after 3 minutes, f, IJ and C rotations are allowed.

However, if the transistor 31 turns on again after 3 minutes or more have passed since it turned off, the capacitor 34 has been sufficiently disconnected through the resistor 31 during that period, and the transistor 31 turns on as if it were water. Increased calculation at this moment 11]
Since the ←) human power of the device 32 becomes lower dLIe than the (+) input, its output becomes high level and immediately turns off the thyristor 41.
By turning on the relay 42 and integrating the circuit with the controller 27, the power can be turned on and off by operating one knob on the remote control unit. It has the advantage of being able to perform all of the operations listed in section 1-1 above.

[Brief explanation of drawings]

FIG. 1 is a schematic iF view showing an embodiment of the operation section of the air conditioning control circuit according to the present invention, FIG. 2 is an inverted view showing the contents of the operation section shown in FIG. 1, and FIG. Circuit diagram 1 showing an embodiment of a one-source device for a heating and cooling control circuit according to the invention. Figure J4 is a circuit diagram showing one embodiment of the heating and cooling control circuit according to the present invention. Explanation of symbols 1... Knob, 2... 0T resistor, 4... Heel source switch (micro switch), 5... Air conditioning/heating switching circuit, 6... Fan speed ratio cape circuit, 1 ... Compressor control circuit, 8 ... Delay timer circuit, 12 ... Four-way switching piece, 19 ... Fan motor, 27 ... Combbrella length motor, 28 ... Thermistor, 34 ... Condenry agent Tsuga Asahi 4 people 9

Claims (1)

[Claims] A heating and cooling control circuit for use in a thermal bonding type air conditioning system including a four-way switching valve, a compressor, and a fan for blowing cold and hot air. The compressor D operates according to the operating state of the circuit and the heating/cooling switching circuit? The rotational speed of the fan changes depending on the operating state of the compressor control circuit that controls on/off and the heating/cooling switching circuit. A fan speed control circuit for controlling a fan speed, a delay timer circuit for indicating a predetermined period of time to start the operation of the front compressor depending on the operating state of the compressor control circuit, and a power source for supplying force to each of the above circuits. With the circuit? First, the air conditioning/heating switching circuit indicates that the air conditioner is the strongest. a variable resistor whose resistance value changes depending on the position of the knob; When placed in the 46th position between the second position, the +gfJ mark 1d source circuit is turned off, but in other positions Qv is turned on. is between the 1st and 6th positions ↓) When it is at Roishima 81st position 1d, the four-way switching valve is set to the cooling motor 9.
L ii K rb + Ir sharpener includes a first magnetic circuit that maintains the heating mode.
The fan speed (B, control circuit (/(i) when the knob is the first
, second and sixth positions 11], when the fan is in the first or second position, the low speed winding of the motor driving the fan is energized to the first or second position. The body includes a second circuit that uses a high-speed winding to energize the air pressure circuit, and the compressor control N path has a resistance value / a thermistor arranged so as to correspond to the variable resistor;
When the temperature is set to -, the resistance value of the thermistor causes the power signal to be output only when the indoor indoor temperature is higher than the cooling temperature indicated by the temperature control.
Okinoma Ru. If the second position is 6, the output signal is output only when the indoor temperature represented by the resistance value V of the previous Pisami λ is lower than the heating temperature value instructed by the above 6 and the delay timer circuit includes the sixth electric circuit.
In response to the output signal of the 1h1 air circuit, when the output signal is present, the light is weighted with the first time constant, and when it is absent, the light is focused with the second time constant. When the output signal of the sixth magnetic circuit is generated when the amount of radiation of When the output signal of the electric circuit is generated and the output signal of the electric circuit A4 is generated, and the output signals of the sixth and fourth electric circuits are both present at the same time, the completion tree is turned on. The heating and cooling control circuit is characterized in that it is configured so that: