KR920003247Y1 - Control device for starting compressor of refrigerator - Google Patents

Abstract

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Description

Controllers for Water-cooled Air Conditioners and Refrigerators

1 is a circuit diagram of the control device of the present invention.

2 is a sequence control waveform diagram of the present invention and the conventional apparatus.

* Explanation of symbols for main parts of the drawings

P: Control Device 2: Oscillator Circuit

2a, 2b: oscillation circuit 4: control circuit

6: Integrated circuit unit for on / off switching

6a, 6b: integrated circuit unit for on / off switching

Ga-ma: Magnetic holding signal circuit FF: Flip-flop circuit

RY: Relay T1, T2: Delay timer

The present invention relates to a control device for a water-cooled air conditioner and a refrigerator, and in particular, by employing an integrated circuit, a water-cooled air conditioner that sequentially controls the start-up and stop control of the water-cooled air conditioner and the refrigerator, and thus, the sequence control. It relates to a control device for a refrigerator.

Conventionally, when the water-cooled air conditioner and the freezer are controlled, when the first operation is performed, the sequence of ① cooling tower pump → ② cooling tower 휀 motor → ③ heat exchanger blower or circulation pump motor → ④ No.1 compressor → ⑤ no.2 compressor In the stop control, unlike the above, the components of ①, ②, ③, ④, and ⑤ are operated in a sequential order at the time of starting. The shock was very great.

Therefore, due to the impact of the electric shock at this time it was acted as a major factor that causes the trouble of the equipment attached to the air conditioner and the freezer, such as TV, computer, lighting equipment, etc.

The present invention devised to completely solve the above-mentioned drawbacks, by providing an advantage that the sequence control to all sequentially by adopting an integrated circuit for the start and stop control of the water-cooled air conditioner and the refrigerator.

That is, when starting, the components are controlled in sequence in the order of ① → ② → ③ → ④ → ⑤, and in stop, the sequence is reversed from the above in the order of ⑤ → ④ → ③ → ② → ①, thereby providing electric shock. This minimizes the impact of peripherals on electrical shocks.

In particular, the configuration employing the integrated circuit has the advantage that it can be miniaturized and consumes less electricity than the sequence control employing the conventional relay, and the electrical contact portion is less than that of the relay, resulting in poor contact. The advantage is that the failure rate is almost completely absent.

In addition, unlike the automatic water-cooled air conditioner described above, the manual-type water-cooled air conditioner stops the compressor only when the operation is stopped, and the other blowers, pumps, and cooling towers continue regardless of the compressor stop. As a result, the problem has been raised that wasteful power is wasted.

Even in such a case, if the control device of the present invention is adopted, both start and stop are sequentially controlled, and therefore, especially when the operation is stopped, all the devices can be stopped, thereby providing a power saving effect.

That is, the present invention is a means for achieving the above object, consisting of a flip-flop circuit portion and two oscillation circuits connected to the relay of the on / off select contact common to the power supply portion, one bulging circuit Is directly connected to the flip-flop circuit portion, and the other oscillating circuit is connected to the flip-flop circuit portion via a timer and an inverting element, an on-off switching integrated circuit portion connected to the oscillating circuit portion, and its integration It is a control device for water-cooled air conditioners and freezers composed of a control circuit section comprising a magnetic organic signal circuit connected to each output side end of the circuit section.

Hereinafter, the technical configuration and effect of the present invention based on the accompanying drawings in detail.

The present invention is by no means limited to the following examples.

1 shows an embodiment of the device P of the present invention, which is roughly as follows. The control device P of the present invention includes the relays RY of the on / off selection contacts ab and ac connected to the power supply unit 10, and the flip-flop circuit unit FF connected to the relay RY. An oscillation circuit portion 2 connected to the flip-flop circuit portion FF, an oscillation circuit portion 2, and an on / off switching integrated circuit portion 6 and a magnetic hold connected to the integrated circuit portion 6; And a control circuit section 4 as a signal circuit (gamma).

Next, each of the above components will be described.

Each end of the relay RY which is common to the power supply unit 10 is connected to the inputs of the NAND gates N1 and N2 of the flip-flop circuit unit FF, and the output of the oscillation circuit of the oscillation circuit unit 2 described later. Connected to (2a) and (2b).

The oscillation circuit section 2 is composed of two oscillation circuits 2a and 2b of the same configuration, and the NAND gate N3 input of the oscillation circuit 2a is the NAND gate N2 of the flip-flop circuit section FF. The output of the NAND gate N4 is connected to the on / off switching integrated circuit part 6 of the control circuit part 4 described later.

Another oscillation circuit (2b) is the input of the NAND gate (N3 '), the NAND gate (N1) output of the flip-flop circuit portion (FF) is connected. The NAND gate N4 'is connected to the output of the inverting element 3e of the self-generating signal circuit (e) of the control circuit section 4, which will be described later, via another inverting element 15 and a delay timer T2. Is connected to the on / off switching integrated circuit part 6 of the control circuit part 4 described later.

The on / off switching integrated circuit section 6 of the control circuit section 4 is configured as two on / off switching integrated circuits 6a and 6b.

The input terminals D and D 'of the on / off switching integrated circuits 6a and 6b have a common input to the NAND gates N1 and N2 of the flip-flop circuit unit FF. The power supply unit 10 is connected to each other, and the outputs of the NAND gates N4 and N4 'of the oscillation circuits 2a and 2b are connected to the clock terminals CK and CK'.

In addition, the output terminals Q1-Q4 and Q1'-Q4 'of the on / off switching integrated circuits 6a and 6b are each provided with one set of self-sustaining signal circuits (Ga-ma). Connected.

The self-maintenance signal circuit (ga-ma) is composed of or gates 1a-1e, inverting elements 3a-3e, and end gates 5a-5e, and constitutes one set. The output terminals Q1u and Q4 of the ounce switching integrated circuit 6a are connected to the primary inputs of the order instruments 1a-1d of (a) in order of their output terminals.

On the other hand, the primary input of the self-maintenance signal circuit (e) becomes common with the secondary input of the or gate 1d of the self-maintenance signal circuit (d) to the clear terminal CL of the on-switching integrated circuit 6a. Connected.

The inverting elements 3a-3d of the self-hold signal circuit (a-d) are inputted to the output terminals Q1'-Q4 'of the output terminals Q1', Q4 'of the off switching integrated circuit 6b. ) Are linked in the reverse order.

The input of the inverting element 3e of the magnetic sustain signal circuit e is connected to the output of the NAND gate N1 of the flip-flop circuit unit FF as described above.

Further, in the above self-maintaining signal circuit (ga-ma), the outputs of the or gates 1a-1e and the inverting elements 3a-3e are simultaneously connected to the inputs of the end gates 5a-5e. The secondary inputs of the gates 1a-1e are connected to the outputs of the end gates 5a-5e.

In addition, the clear terminal CL 'is connected to the output of the end gate 5a which is common to the secondary input of the or gate 1a of the self-maintenance signal circuit (a) via the inverting element 17.

Each connection terminal (a1-a5) of the self-maintaining signal circuit (Ga-ma) has a cooling tower pump, a cooling tower fan, a blower or a circulation pump, a compressor No. 1, and a compressor No. 2, which are components of an air conditioner and a chiller in order. Each is connected.

In the drawing (S) is an interlock switch to turn off the whole in order to turn off when the air conditioner or the refrigerator is abnormal, (So) is a temperature sensor, (C), (C ') Is a capacitor, (R), (R') is a resistor, (VR), (VR ') is a variable resistor.

In such a configuration, when the relay RY is selected as the "on" contact ab by exciting the coil by the indoor temperature sensor So, the flip-flop circuit part FF is supplied by the power supply from the power supply unit 10. In the oscillator circuit 2, the oscillator circuit 2a is given a "high" time signal, that is, a "1" signal.

Therefore, the oscillation circuit 2a starts oscillation and outputs a pulse. At this time, when the pulse signal inputs the " on " switching of the on / off switching integrated circuit unit 6 to the clock terminal ck of the integrated circuit 6a, the output signal is sequentially processed to the output terminals Q1-Q4 of the integrated circuit 6a. As soon as the "1" signal goes.

The signal " 1 " output from the output terminals Q1-Q4 is introduced into each of the sets of self-holding signals (G-D) connected to the output terminals Q1-Q4, and the self-holding signal circuit Cooling tower pump, cooling tower fan, blower or circulating pump, No. 1, connected to each connection terminal a1-a4 of the above self-maintaining signal circuit (ga-ra). Allow the compressor to run in sequence.

At this time, the " 1 " signal outputted from the end gate 5d of the self holding signal circuit d is sent to the self holding signal circuit e via the delay timer T1 in which the time (approximately 1 minute) is set in advance. Since the first compressor is started, the second compressor connected to the terminal a5 of the self-hold signal circuit e after the delay by the delay timer T1 is started.

On the other hand, the " 1 " signal outputted from the above self-maintaining signal circuit d is introduced into the clear terminal CL of the " on " switching integrated circuit 6a, and the " on " switching integrated circuit 6a. Output terminals (Q1-Q4) of () are reset.

However, "1" is memorized at the output of the self-sustaining signal circuit (a-ra), and the devices connected to the terminals a1-a4 are continuously operated to maintain the room temperature and the temperature of the refrigerator at an appropriate temperature. .

Next, the stop control will be described.

In the above operating state, if the coil becomes non-excited by the temperature sensing by the temperature sensor (So), the relay RY of the "on" contact ab until then is the "off" contact ac. When the NAND gate N2 of the flip-flop circuit unit FF is converted, the oscillation circuit 2a is given a " low " time signal, that is, a " 0 " signal to stop the oscillation operation until then.

On the contrary, the output of the NAND gate N1 of the flip-flop circuit portion FF becomes a "high" signal, that is, a "1" signal, and gives an "1" signal to the oscillation circuit 2b side. Start to output the pulse signal.

At this time, before the " 1 " signal output from the flip-flop circuit section FF is introduced into the oscillation circuit 2b, the " 1 " signal is first the "reset" design of the self-hold signal circuit e. By inputting the "1" signal to the "0" signal and outputting the "0" signal, the self-holding signal circuit (e) is also outputted to "0" so that the second compressor (not shown) connected to the terminal a5 is connected. Stop it.

On the other hand, the "0" signal output from the inverting element 3e is introduced into the inverting element (NOT) 15 and output again as a "1" signal. In this case, the "1" signal is previously set in time (about 5 seconds). Since the "1" signal is introduced into the oscillation circuit 2b via the delay timer T2 in which? Is set, the oscillation circuit 2b is oscillated after approximately 5 seconds have elapsed by the delay timer T2.

When the oscillator circuit 2b outputs a pulse signal, the pulse signal is inputted to the clock terminal CK 'of the " off " switching integrated circuit 6b, and the " 1 " signal is drawn from the oscillator circuit 2b. Each time the signal " 1 " is output in the order of the number of the output terminals Q1'-Q4 '. In this case, when the "1" signal is given, the "1" signal is applied to the inverting elements 3a-3d which are the "reset" terminals of the respective self-holding signal circuits (a-d) in the reverse order, that is, 3d → 3c → 3b → 3a. In other words, the output of each self-holding signal circuit (a-ra) also becomes a "0" signal in the order Ra → da → da → where the devices connected to the connection terminals a1-a4 are also reversed as above. That is, it stops in the order of No. 1 compressor → heat exchange blower or pump → cooling tower 휀 cooling tower pump.

On the other hand, the "0" signal output from the self-holding signal circuit (a) is an inverting element whose output is connected to the clear terminal (CL ') and the input is connected to the output of the end gate (5a) of the self-holding signal circuit (a). At (NOT) 17, the signal is inverted to " 1 " signal and is introduced into the clear terminal CL 'of the " off " switching integrated circuit 6b to reset the output signal of the integrated circuit 6b.

However, since the " 0 " signal is stored at the output of the self-holding signal circuit (ga-ma), the stop state of the devices connected to the respective terminals a1-a5 is continuously maintained.

The start and stop control of the above embodiment is continuously repeated by the action of the temperature sensor (So) by the temperature change, and when the whole of the device P is "off", the interlock switch S is operated to supply power. Just disconnect.

As described above, the apparatus P of the present invention, as shown in FIG. 2A, is sequentially controlled in a step waveform when it is in operation, but temporarily stopped at a time when stopped (B). Unlike the above), both start and stop are controlled in sequence, i.e., in a stepped waveform. Unlike the related art, the electric shock is reduced so that the peripheral devices of the air conditioner or the freezer have a lower electric impact effect. It is devised to have an excellent effect so as not to receive.

Claims (1)

It consists of a flip-flop circuit part FF connected to a relay RY having on / off selection contacts a and a common in common with the power supply unit 10, and two oscillation circuits 2a and 2b. One oscillation circuit a is directly connected to the flip-flop circuit unit FF, and the other oscillating circuit 2b is the flip-flop circuit unit FF via the inverting element 15 and the delay timer T2. An on / off switching integrated circuit portion 6 connected to the oscillating circuit portion 2 connected to the oscillating circuit portion 2, the on / off switching integrated circuits 6a and 6b, A control device for a water-cooled air conditioner and a freezer, configured by a control circuit part (4) made of a self-holding signal circuit (ga-ma) connected to an on / off switching integrated circuit part (6), to sequentially control the starting and stopping.