JPS5916112B2 - Compressor start determination device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a compressor start-up determination device, and is particularly intended to safely determine whether small movements are normal or abnormal with simple operation.

Conventionally, there are two methods for determining whether the compressor has started properly: one is to determine whether the operation of the entire device assembled with the compressor body clasp is normal or abnormal, and the other is to separate the compressor itself from other equipment parts and start it. A method was adopted in which the capacitors were turned on and off manually.

However, using this method requires a high degree of skill to distinguish between a defective compressor itself, a defective electrical component, a defective power supply, the influence of dual-use environments, etc., and thus may lead to incorrect judgments. There are some problems that are easy to solve.

As a result, repair costs may be wasted based on incorrect judgments,
This caused operational management problems that led to wasted time.

'Secondly, if you manually turn on and off the compressor itself by separating it from other parts,
There is a risk of electric shock during judgment work, and the work is not easy.

In consideration of the above points, the present invention proposes a compressor start-up determination device that can safely turn on and off the compressor itself with extremely simple operation.

Referring to the drawings, an example of the present invention will be described below in detail with reference to FIG. 1. As shown in FIG. and 1 product outlet A
It is built into the housing BO which has OUT2 and AOUT3, and the product connection terminal AOUT1, and the power supply terminal IN.
1 and IN2 to the commercial power supply, and when turning the compressor itself on and off, disconnect the single-wave test compressor from other parts and connect the direct connection terminal 0U.
When connecting to T1゜0UT2 and 0UT3 or controlling the on/off of the entire device, connect the device's power connection cord to S-type outlet AOUT2 or AOUT3 or terminal AO.
It is designed to connect to UT1.

However, after making such connections as necessary, a determination operation is performed as described below along with the operation using the flowchart of the determination method shown in FIG.

In the first step 11, when a user complains about a compressor startup failure, it is confirmed in step 12 whether or not there is actually a startup problem, and if there is an abnormality, the next step 13 is to use the determination device shown in Figure 1. Connect the power line to the external connection terminals IN1 and IN2 of 1, and connect the power line to the external connection terminals IN1 and IN2 of terminal A.
OUT1 or outlet AOUT 2 or AOUT
Connect the power cord of the compressor unit to 3.

However, as shown in Fig. 1, the power terminals IN1 and N2 are connected to the "operation/impedance measurement" changeover switch SW through the power switch NFB, which is powered by a no-fuse spring.
Connected to 2.

Note that PL is a power indicator lamp.

Therefore, in step 15, the changeover switch SW2 is switched to the "operation" side contact a to confirm startup.

At this time, the "operation" side contact a of the changeover switch SW2 is set to "
Product, compressor unit" changeover switch SW3 is connected (Fig. 1), and by switching to the "product" side contact, the product outlets AOUT2 and A connected to that contact are connected.
Supply power to OUT3 and product connection terminal AOUT1,
In this way, the entire compressor system is activated.

If the compressor can be started as a result of executing the startup confirmation step 15 by applying pressure in this manner, it can be easily determined that the compressor is a good product (step 16).

However, if startup is not possible, the line impedance is measured in the next step 17 to check whether there is any abnormality on the power supply side.

That is, the changeover switch SW2 is switched to the "impedance" side contact, and the line impedance is measured using the voltmeter V and ammeter 2OA connected to this contact.

At this time, the load RE is inserted by pressing the impedance load connection push button switch P'S1 connected to the "impedance" side contact point.

As a result of this measurement, when the impedance is, for example, 0.5Ω or less and the line voltage is 90V or more, it is determined that the power supply side is normal.

Thus, if the determination result in step 17 is "abnormal",
In the next step 18, a slider SD as a voltage changing means is connected, and then in step 19, the slider is used to change the reading of the voltmeter V to a predetermined value (e.g. 87V+1).
0XZ) (here 2 is the impedance),
Thereafter, in step 20, startup confirmation is performed.

In addition, it is 5 DIN. 5DOUT are slider input and output terminals, respectively.

This operation is performed using the slider input terminal 5DIN in FIG.
Remove the short bar SR between output terminal 5 and output terminal 5DOUT, connect the slider SD between both terminals, and switch the changeover switch SW2 to the "operation" side contact a, and switch the changeover switch SW3 to the "product" side contact a. conduct.

As a result, if the compressor starts, it can be determined that the power supply is unavailable (in step 21), and if it does not start, then in step 22, the compressor direct connection terminals 0UT1, 0U
The compressor is directly connected to T2 and 0UT3, and then in step 23, the slider SD is used to adjust the reading of the voltmeter V to the expected value (87vttoxz).

In this way, in step 24, it is confirmed whether or not the compressor is started, and if it starts, it can be determined that the compressor itself is a good product (step 25).If it does not start, the voltage is changed in the next step 26. After raising the IOV, check the startup again in step 2T.

As a result, if the compressor starts, it can be determined that the compressor main body is difficult to start (step 28), and if it does not start, it can be determined that the compressor main body is defective (step 29).

To start the compressor, switch the capacitor cut-off switch SW4 connected to the "compressor single unit" side contact a of the changeover switch SW3 in FIG.
and SC3 are switched and selected by a capacitor capacity changeover switch 5w5c.

In addition, a rotary compressor/ML compressor changeover switch SW1 is provided, and the [rotary compressor]
When the side contact aK is switched, the starting capacitors SC1 to SC3 are directly connected to the terminal 0 via the POSISTOR PST.
Connected to UT3 and 1 running capacitor RC (
It is connected to a direct connection terminal 0UT2 through a changeover switch 5WRC (selected by a changeover switch 5WRC) and a reactor capacity changeover switch SWL (which can perform tap changeover of reactor L), thus making it possible to start various rotary compressors. There is.

Also, when the switch SW1 is switched to the Σ side, the ML compressor (this is a second compressor different from the rotary compressor) connects the starting capacitors SC1 to SC3 to the reactor driven by the delay timer RT. Short circuit/ML compressor start” relay R
Connect to direct connection terminal 0UT3 through contact 1, and
The reactor L is short-circuited by the contact of the relay R1.

Note that when the rotary compressor or ML compressor is started in this way, the load current can be adjusted using the selector switch.
It can be measured by a 20A ammeter 2OA or a 10A ammeter 1OA connected to the 8W1, and an ammeter shunt switch PS2 and a relay R2 driven by the ammeter shunt switch PS2 are provided to operate the measurement path.

In this way, various compressor bodies of different types, capacities, etc. can be started individually.

As described above, even if the line impedance measured in step 17 is abnormal, it is possible to determine whether the compressor itself has started or not, independently of the cause.

However, if the measurement result in step 17 is normal, in step 30 the compressor body is connected to the direct connection terminal O.
UT, to 0UT3 (in the same manner as described above for step 22), and the activation is confirmed in the next step 31.

As a result, if the compressor can be started, it can be easily determined that the compressor is a good product (step 32).

If booting is not possible, connect the Slydac SD in step 33 (and step 18 above), then proceed to steps 23 to 27 described above.
Perform the startup confirmation operations up to.

In this way, it is possible to confirm that the compressor has started when the line impedance measurement result is normal.

By the way, as mentioned above, if a simple judgment is made in step 16 or 32 that the compressor is good, then in step 34 the slider is connected in the same manner as described above for step 18, and in step 35 the slider is connected. After adjusting the voltage to 90V, startup confirmation is performed in step 36.

As a result, if the compressor can be started, it can be confirmed that the compressor is a good product (step 37).

If this does not work, then step 23~
Perform the startup confirmation operation in step 27.

In this way, if a simple judgment is made, a precise activation confirmation can be performed subsequently.

As described above, according to the present invention, power can be supplied not only to the compressor main body, but also to the entire compressor device including the compressor main body. Therefore, the determination operation can be performed accurately.

In addition, by checking the startup of the compressor while changing the voltage of the power supply to the compressor device or the compressor body using a voltage changing means (Slidac in the above embodiment), it is possible to detect defects on the compressor device or the compressor body side. This can be clearly distinguished from the cause (for example, a defective power line).

In addition, in this way, it is possible to obtain safety and simplicity of work, which requires only connection to the compressor device and the compressor main body using power terminal means (power terminal, outlet, etc.).

[Brief explanation of drawings]

FIG. 1 is a connection diagram showing an example of a compressor start determination device according to the present invention, FIG. 2 is a flowchart for explaining its determination operation, and FIG. 3 is a front view showing the operation panel surface of the device in FIG. 1. be. 1... Compressor start determination device, ■N1. IN2・
・・Power input terminal, SWl・・Tally compressor・ML compressor changeover switch, SW2・・Operation・
Impedance selector switch, SW3...product/compressor unit selector switch, 5WSC...starting capacitor capacity selector switch, SWL...reactor capacity selector switch, AOUT1~AOUT3,...
Product terminal, outlet, 0UT1-OUT3...terminals directly connected to the compressor body.

Claims (1)

[Claims] 1. A power input terminal to be connected to an external power supply, a product connection terminal for supplying the four power input terminals received to the power supply input terminal to the compressor unit including the compressor body, and a product connection terminal to be connected to the power supply input terminal. and a compressor unit direct connection terminal ± for supplying power as starting power for the compressor itself, and a first terminal connected to the power supply input terminal for selecting whether to operate the compressor or measure the impedance of the power line. A switching switch is provided, and the impedance of the power line is measured by connecting a voltmeter in parallel to the power supply and an ammeter in series with the power supply via a measuring impedance, and when the impedance is good, the , a voltage changing means is inserted after passing through the changeover switch of 1, and the power supply voltage that has passed through the voltage changing means is selected as either the product power terminal, the comb, the direct connection to the body of the retsusa, or the terminal. A compressor start determination device characterized by comprising a changeover switch.