JPS6066688A - Applied product for motor - Google Patents

Abstract

PURPOSE:To obtain a motor application product which can be used in combination with both two different voltages by providing a relay which responds to a power source voltage. CONSTITUTION:When a power source voltage is 110V by a relay 30 which opens or closes in response to the power source voltage, it is connected as shown to connect a main winding M in parallel with the other main winding N. Thus, the main winding M and the other main winding N are connected in series. In this manner, the circuit of a motor 2 is automatically switched in response to the power source voltage, and the same motor can be used with a power source of different voltage.

Description

DETAILED DESCRIPTION OF THE INVENTION [Original Field of the Invention] The present invention relates to a motor-applied product, and more particularly to a motor-applied product that automatically switches an electric circuit appropriately depending on the level of power supply voltage.

[Background of the invention]

As is well known, there are 1.
A single voltage of 00 [V) or 200 CVl is distributed. In addition, in parts of the Middle East and Southeast Asia, government projects are progressing to increase the power supply voltage (for example, from 110 (V) to 220 (V)). Therefore, it is common to find two types of voltage power sources in the same household or in the same area. In such areas, problems such as burnout of motor windings due to incorrect connection to a different type of power source often occur. In order to prevent such troubles, two types of power supply voltages can be used.
It is desired to provide motor application products with German voltage specifications.

[Purpose of the invention]

The present invention has been made in view of the above problems, and its purpose is to automatically switch an electric circuit according to the power supply voltage,
The objective is to provide a motor application product that can be used for both two different voltages.

[Summary of the invention]

To achieve the above object, the present invention provides a relay that opens and closes depending on the power supply voltage in an electric motor equipped with a main circuit having two main windings, and connects the two main windings in series or in parallel. It has an automatic circuit switching function.

[Embodiments of the invention]

Hereinafter, preferred embodiments of the present invention will be explained based on the drawings. Fig. 1 is a sectional view showing an electric well pump as an electric motor applied product according to the present invention. In FIG. 1, a pump section 3 driven by an electric motor 2 is mounted on the top of a pressure tank 1 having a cylindrical shape made of a steel plate, and a protective cover 4 made of a steel plate is placed on top. In addition, pressure tank 1 includes pressure tank 1.
A pressure switch 5 is installed to open and close the drive electric circuit of the motor 2 by sensing pressure changes within the motor. When the pump unit 3 starts pumping water by starting the electric motor 2, the water source 6
The water passes through the suction pipe 7i and is sucked into the pump section 3. The pumped water is pressurized in the pump 3, then flows into the pressure tank 1, and is supplied to the faucet 9 through the discharge ☆8.Air 10 is held in the pressure tank 1. When the faucet 9 is closed, the pumped water compresses the air 10 and increases the pressure. When the pressure in the pressure tank 1 reaches a predetermined value, a pressure switch 5 provided on the drive electric circuit of the electric motor 2 opens its contacts to stop the operation of the electric motor 2. Next, when the faucet 9 is opened, the air expands while pushing out the water in the pressure tank 1, so the pressure in the pressure tank 1 decreases. When the pressure drops to one foot of pressure, the contacts of the output switch 5 close, the motor 2 is activated, and the pump section 3 starts pumping water. In this way, the pressure switch 5 senses the pressure change in the pressure tank 1 due to the opening and closing of the faucet 9, and automatically operates the pump section 3.

Incidentally, FIG. 2 is a (b) diagram shown for explaining the switching principle of the pulse circuit according to an embodiment of the present invention.

In Figure 2, auxiliary winding #j15 and condenser 9'16
An auxiliary circuit 17, which is connected in series, and a main winding (M) 18 are arranged in parallel. Also, other main volume 113 (N)
The circuit 20 of No. 19 is branched into a circuit 21 and a circuit 22, and a heat-sensing type temperature-sensitive relay 23, which will be described later, is provided on the circuit 22. Therefore, the circuit network of the electric motor includes circuits 24 and 25 which are the result of the parallel connection of the above-mentioned auxiliary circuit 17 and the main winding (M) 1B, the circuits 21 and 22 described above, and the main winding (N). The circuit 26 drawn out from the other side of the circuit 19 has five lead lines. As shown in the figure, when the voltage of the power supply 27 is 110 (V), the circuit 21 and the circuit 24 are connected, the circuit 25 and the circuit 26 are connected, and the power supply 27 is connected via the pressure switch 5. In addition, circuit 22 is also connected to tIL#27.

As a simplified wiring diagram in this case is shown in FIG. 3, the auxiliary circuit 17, the main winding (M) 18, and the main winding (N) 19 are connected in parallel. Therefore, the auxiliary circuit 17 and the main winding *
A power supply voltage of 110 (V) is directly applied to each of the three windings (M) 18 and main winding (N) 1.9.

On the other hand, when the voltage is 220 (V:), the circuit 24 and the circuit 26 are connected as shown in the right end of FIG. 2, the circuit 22 is connected to the power supply 27, and the circuit 25 is connected to the Connect to power supply 27 via switch 5.

A simplified refinement diagram in this case is shown in FIG.
N) connected in series with 19. Therefore, a parallel circuit of the auxiliary circuit 17 and the main winding 1161(M)is, and the main winding (N)1
9 each has a voltage (110 V) that is half of the power supply voltage 220 (V).
(V)) is applied.

As explained above, depending on the power supply voltage, the main winding (M) 1B
and the main winding (N) 19 are connected in parallel or in series,
The same motor is operated at two different vL source pressures (in the above example, 110
(V) and 220(V)).

5 and 6 show that the present invention is implemented in the circuit of the motor shown in FIG. FIG. 2 is a circuit diagram showing a circuit for m-opening bales that is automatically performed according to the conditions.

In this embodiment, the above-mentioned drive circuit '1' and the power supply 2 are used.
7, a relay 30 is arranged which performs a circuit switching operation when the voltage is above a certain voltage.

FIG. 7 is a sectional view showing the (11j structure) of the relay 30.

In FIG. 7, an electromagnet 34 is housed in a case 33 formed of a synthetic resin pace 31 and cap 3L. The winding terminals 35 and 36 to which the excitation winding 47 of the electromagnet 34 is connected are connected to the base 31 at predetermined intervals.
is fixed.

Further, on the upper part of the support body 37, a suction plate 38 made of a ferromagnetic material such as steel is supported so as to be swingable like a seesaw. One end (the right end in FIG. 6) of the suction plate 38 is pulled by a tension spring 39, and is normally not in contact with the pole 40 of the electromagnet 34. Further, an insulator 4 is provided on the upper part of the suction plate 38.
A conductive lever 42 is attached via 1. One end (the right end in FIG. 6) of the leno(-42) is connected to the lead wire 4.
3 to a terminal 44 attached to the base 31. Further, the other end of the wire 42 is extended to a position midway between the two terminals 45 and 46 attached to the header 31. In FIG. 7, lever 42 is tilted upward to the left by the tension of tension spring 39 and is in contact with terminal 45. In FIG. Therefore, the terminal 45 and the terminal 44 are electrically connected via the lever 42 and the lead wire 43. Here, the attraction plate 38 is attracted by the excitation attraction force of the electromagnet 34 described above.
The voltage applied to 6 is higher than a predetermined voltage (for example, disocv)
The configuration is such that the moment due to the tension of the tension spring 39 is exceeded when the tension exceeds the moment.

To explain the operation using FIGS. 8 and 9, the electromagnet 34
When the voltage in the excitation circuit 48 having the excitation winding 47 provided between the winding terminal 35 and the winding terminal 36 is less than 180 (V) (for example, 110 [:V:l), the electromagnet 34
0 The suction force is weak, and the suction plate 38 is separated from the suction plate 38 by the tension of the tension spring 39 as shown in Figure KIJ8. Therefore,
Terminal 44 is electrically connected to terminal 45.

The voltage applied between the winding terminals 35 and 36 is i s o (v)
(for example, 220 (V:l), as shown in FIG.
8 is attracted to the pole 40, and the lever 42 moves downward and connects with the terminal 46. Therefore, the terminal 44 and the terminal 46 become electrically connected. In this way, switching can occur automatically depending on the voltage applied between the winding terminals 35, 36. Here, the terminals 44, 45, 46, the lever 42, and the lead wire 43 are set as one set, and if a plurality of sets of these are provided, it is possible to switch a plurality of electric circuits at the same time.

The circuit diagrams shown in FIGS. 5 and 6 use a polar relay 30 with two built-in sets of these, and the main winding 18 and the main winding IIi! 19 in parallel or series,
FIG. 2 is a circuit diagram showing an electric motor that automatically switches.

In FIG. 5, terminals 51 and 52 correspond to terminal 44 in FIG. 7, terminals 53 and 54 correspond to terminal 45, and terminals 55 and 56 correspond to terminal 46.
It is. A circuit 24 in which the auxiliary circuit 17 and the main winding (M) 18 are connected in parallel branches into two, and a terminal 52 of the relay 30
The circuit 21 is connected to the terminal 54, and the circuit 26 is connected to the terminal 51. Further, the circuit 25 is branched into two parts, one of which is connected to the terminal 53,
The other side passes through the pressure switch 5, then branches into two again, and is connected to both the terminal 35 and the wL source 270.

When the voltage of voltage #27 is low (for example, 110 (V)), the relay 30 does not operate as described above, and the circuit diagram in FIG. 5 becomes similar to the circuit shown in FIG. 3. 1101mV
) for normal operation.

Next, Figure 6 shows the circuit when connected to the power supply 27 of 220 (V"l.') V-30 senses the power supply voltage and switches as shown in Figure 9. In order to perform the action,
It becomes equivalent to the circuit shown in Fig. 4, and the wiring of the motor 2 is also 22.
Switched to 0 [V).

As mentioned above, the circuit of 'KameNJJlu2' automatically switches depending on the power supply voltage, and the same motor can be used for power supplies with different voltages, making it a practical electric pump where the user does not have to pay special attention to the voltage value. is obtained.

Next, the temperature-sensitive relay 23 will be explained using FIG. 10. The temperature-sensitive relay 23 described above will
This is provided to prevent the windings of the electric motor 2 from burning out. A bimetal 62 is held at one end by a holder 61 made of a highly conductive material and electrically connected to the circuit 20 . The other end of the bimetal 62 is normally pressed against a terminal plate 63, and the terminal plate 63 is connected to the circuit 22. Further, an insulator 65 is provided between the circuit 20 and the circuit 22 to prevent electrical contact. These are the outer covering 6
Covered by 6. For example, if the relay 30 were to malfunction while the motor 2 was being operated at the 220 [■] ton source, the circuit would
In the case of switching to the connection for 1101:V) shown in the figure, the auxiliary circuit 17, the main winding (M) 18, the main winding! (
N) A twice as high voltage of 220 [V] is directly applied to x9,
An overcurrent will flow and burn out the winding. Therefore, by providing the temperature sensitive relay 23, this problem can be prevented from occurring. When an overcurrent flows through the bimetal 62 in the temperature-sensitive relay 23, the bimetal 62 becomes hot.
is reversed upward and breaks contact with the terminal plate 63, thereby cutting off the power supply 27 and the motor circuit, thereby preventing damage to the motor 2.

If the outer sheath 66 of the temperature-sensitive relay 23 is formed of a good thermal conductor (for example, gold FA such as aluminum), the bar metal 62 can also be operated by heat from the outside. For example, if the temperature-sensitive relay 23 is wrapped in a thin film insulator (polyethylene terephthalate thin film), etc., and installed on the winding of the electric i1J machine 2, then if it is installed on the pump part 3 in FIG. Also, when the temperature inside the pump section 3 rises too much, the operation can be stopped to preserve the electric pump. For example, if the pressure switch 5 fails and becomes continuously energized, the pump will continue to operate even if the faucet 9 is closed, resulting in an overloaded state such as shut-off operation, and the pump section 3' (i- and IIL motor 2 The temperature of the motor 2 also rises.Sensing this temperature, the temperature sensitive relay 23 operates to protect the electric motor 2.

11 and 12 show a manual reset type current type that is used in place of the temperature-sensitive relay 23 or used in combination to protect the motor. Although the circuit is temporarily cut off, the temperature of the bimetal 62 rises again. When the temperature decreases, it returns to the open state as shown in FIG. 10, and the self-fang of the temperature-sensitive relay 23 repeats ON-OFF, shortening its lifespan. By the way, pump repair (relay 3)
Since the operation of the electric motor 2 is stopped until the replacement of the motor (e.g., replacement of the motor) is carried out, it is more durable to use the manual reset type current relay 67 described above. Fig. 11 explains the structure of the support column 6 fixed inside the resin box 68
At 9, there is a bimetal 62 and a movable contact. It's a trench, the bimetal 62 has a bare lead via the protective tube 72 &@7
3 is wound, one end of the stock gland is connected to a relay terminal 74 protruding outside the box 68, and the other end is connected to the tip of the bimetal 62. In addition, the spring 71
The movable contact piece 7o pushed down by the repulsive force of the box 68
Stick the other end out. The relay contacts the terminal 75 and is closed.

Further, a button 76 is arranged in a box 68 above the movable piece 7o so as to be able to move (δ).Normally, it is kept energized in this state, but as mentioned above, the relay 30 When a failure occurs and a voltage of 220 [V] is applied to the circuit of motor 2 in the state of 110 (V) specification, 'current relay 67
An excessive rt flow also flows. When the bare lead wire is overheated by the current, the bimetal 62 bends downward as shown in FIG. 12, and the repulsive force of the spring 71 causes the movable contact piece 70
is reversed upward, so that the relay terminal 74 and the relay terminal 75 are electrically cut off, and the power supply 27 and the electrical terminal 75 are electrically disconnected. 1LlI
The circuit of machine 2 (circuit 27 in FIG. 5) is opened and the operation is stopped. At this time, the button 76 pushes up the movable contact piece 70. If you press this button 76 after pump repair,
The state returns to the state shown in FIG. 11 again, and the state returns to the state where electricity can be applied.

FIGS. 13, 14, and 15 are circuit diagrams shown to explain other embodiments of the present invention.

The difference between the embodiment shown in FIG. 13 and other embodiments is as follows.
When the voltage of the power supply 27 is 110 [V], the circuit 87 is connected to the circuit 82, and the circuit 88 is connected to the circuit 85,
The equivalent circuit in this case is made to be the same as that shown in Fig. 3, and when the power supply voltage is 220 (:V), the circuit 87 is connected to the circuit 85, and the circuit 88 is insulated. Therefore, the equivalent circuit in this case is designed to have the wiring specifications for 220CV shown in FIG.

FIGS. 14 and 15 are circuit diagrams showing an embodiment in which the circuit shown in FIG. 13 can be automatically switched in accordance with the electrocontour voltage.

The winding terminals 35 of the relay 30 described in 1jσ are integrated into a circuit 91 and connected to one side of the power supply 27, and the winding terminals 35 of the relay 30 described above are connected to one side of the power supply 27.
6 is integrated into a circuit 81 and connected to the other side of the power supply 27. Further, a circuit 87 is connected to the terminal 52, a circuit 82 is connected to the terminal 56, a circuit 85 is connected to both the terminal 54 and the terminal 55, and the circuit 85 is connected to the terminal 52,
A circuit 88 is connected to each of the circuits 1 and 1. In the case of FIG. 14, the relay 30 is in a steady state as shown in FIGS. 7 and 8, and the wiring state is a circuit for 110[:V] equivalent to that in FIG. 3.

When the electric voltage is 220 [■], the relay operates as described above and connects the circuit 87 to the circuit 8 as shown in FIG.
5, and the circuit 88 is switched to a non-conducting state. Therefore, the wiring state is 220 (
V) circuit. In this way, a self-circuit switching type electric pump is obtained in which the motor circuit is automatically and appropriately switched in accordance with the power supply voltage.

In addition, it is better to provide it on the load side than to provide it on the power supply 27 side from the pressure switch 5t-ReV-30.

This is because the relay 30 also performs a switching operation each time the pressure frame 5 is turned on and off, which shortens the life of the relay 30.

FIG. 16, FIG. 17, and FIG. 18 are circuit diagrams shown for explaining still other embodiments of the present invention. an auxiliary circuit 17 in which an auxiliary winding 15 and a capacitor 16 are connected in series;
A circuit 95 is drawn out from one end of the parallel circuit with the main winding (M) 1B, and a circuit 96 and a circuit 97 are drawn out from the other end. Also, from one end of the other main winding (N), a circuit 98
and a circuit 99, and a circuit 100 is drawn out from the other end. The circuit 98 is connected to the power supply 27 via a fuse 101 for overcurrent prevention. Further, the circuit 96 is connected to the power source 27 via a manual switch 102.

When the voltage of the power supply 27 is tio(v), when the circuit 95 and the circuit 99 and the circuit 97 and the circuit 100 are connected, the equivalent circuit t in this case is as shown in FIG. 2 network is configured for 110(V). Further, when the voltage of the power supply 27 is 220 (V), the equivalent circuit can be changed to a circuit for 220 [V] by simply connecting the circuit 95 and the circuit 100, as shown in FIG.

FIGS. 17 and 18 show an automatic switching type circuit using the relay 30 described above. In Figure 17,
Circuit 95 is connected to terminal 52 of relay 30, and circuit 98 is connected to terminal 5 of relay 30.
6, the circuit 99 is also connected to the winding terminal 36 and the power supply 27. Further, the circuit 100 is branched into two parts, one of which is connected to the terminal 54 and the other to the terminal 51.

Further, the circuit 97 is connected to the terminal 55, and the circuit 9G is connected to the other winding terminal 35 and the t source 27. In this case, the voltage of the power supply 27 is 110 [■], and the relay 3 (
1: The circuit 95 and the circuit 98 are connected, and the circuit 97 and the circuit 100 are connected. Therefore, the equivalent circuit diagram is as shown in FIG. performs the switching operation, and the circuit 95 is the circuit 1
00 and the circuit 100 and the circuit 97 are cut off. The equivalent circuit in this case is shown in Figure 4. ``The circuit network for electric motors 4 & 2 is switched to 220 [V]. In this way, the circuit for electric m - 2 automatically switches according to the power supply voltage of 270 [V]. can be switched appropriately and appropriately.

In short, according to the embodiment of the present invention, the two main windings of the electric excitation protection application product are switched and connected in series and parallel with a relay that opens and closes according to the power supply voltage. All of these are included within the scope of the present invention.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to always obtain a motor-applied product with an appropriate power supply voltage.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing an automatic electric pump as an electric motor applied product according to an embodiment of the present invention, Fig. 2 is a tfIh machine circuit diagram of the electric pump of Fig. 1, and Fig. 3 is a diagram of the tfIh machine circuit of the electric pump of Fig. 2. Figure 4 is an equivalent circuit diagram of the high voltage connection shown in Figure 2. Figures 5 and 6 are the circuits of an automatic circuit switching type electric pump using the wiring method shown in Figure 2. Figure 7 is a sectional view of the relay used in the same embodiment, Figures 8 and 9 are explanatory diagrams of the operation of the relay in Figure 7, and Figure 10 is a structural sectional view of the relay used in the same embodiment. , Figures 11 and 12 are 11L.
13, 14 and 15 are circuit ports showing electric pumps showing other embodiments of the present invention, and FIGS. FIG. 7 is a circuit diagram showing a motor circuit according to still another embodiment of the invention. 15... Auxiliary winding, 16... Conde/su, 17...
- Auxiliary circuit, 18... Main winding (ML19... Main winding (M), 11 Figure 17 Figure 18 Figure 9 'N/l envelope zv ll 'jK /3 Figure 14 Figure 175 Figure 1

Claims (1)

[Claims] 1. In motor-applied products that have at least two main windings, a relay that opens and closes depending on the source voltage is installed, and when the relay detects a high voltage, the two main windings An electric motor application product characterized in that the two main windings are connected in series and the two main windings are connected in parallel when a low voltage is detected.