JPH0713601A - Load controller - Google Patents

Abstract

PURPOSE:To provide the load controller which stops a load at the time of fault such as a short circuit and an open-circuit of a transistor, and also, can inform its fault. CONSTITUTION:The control of an ozone generating part 24 supplies power from a power source circuit 61, sets a port P1 and a port P2 of a control circuit 63 to an L level, and supplies a base current to bases of transistors Q1, Q2. In accordance with the base current, the transistors Q1, Q2 are turned on and off, and supply power to the ozone generating part 24. Even when the ports P1, P2 are in an H level, in the case a port P3 is in an L level, even if the base current is not supplied to the transistors Q1, Q2, both of the transistors Q1, Q2 are short-circuited. In that case, it is judged that the transistors Q1, Q2 cause a fault, and outputted from a port P4, and a light emission diode LED1 is allowed to emit light. By light emission of the light emission diode LED1, the fault can be known, and continuation of an operation of the ozone generating part 24 can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a load control device for stopping a load when a failure occurs such as short-circuiting or opening of a transistor of a driving means and notifying the failure.

[0002]

2. Description of the Related Art In recent years, it has been said that water containing a large amount of oxygen by mixing ozone with water is good for health.

An active water production apparatus has been considered in which water in a water storage tank is mixed with ozone from an ozone generator in the water supply apparatus so that the water supplied from the water supply apparatus contains a large amount of oxygen.

Further, in order to adjust the output amount of ozone from the ozone generator, a switching element such as a transistor is used to control ON / OFF of the ozone generator.

[0005]

However, in the above-mentioned conventional control device, when the transistor is short-circuited, the ozone generator, which is a load, continues to be turned on and continues to generate ozone, which may cause an unfavorable state. Have

The present invention has been made in view of the above problems, and an object of the present invention is to provide a load control device capable of stopping the load and notifying when the transistor has a failure such as a short circuit or an open circuit.

[0007]

SUMMARY OF THE INVENTION A load control device according to the present invention comprises a power supply circuit and a drive circuit connected to the power supply circuit and connected to a load, wherein a plurality of transistors are connected in series to drive the load. And a detection circuit that detects the operation of each transistor of the drive circuit, and that detects the detected state of the detection circuit while controlling the transistor and compares the control state and the operating state of the transistor. It is provided with a control circuit for stopping the load in the drive circuit and outputting a failure at a different time, and a failure notification circuit for notifying the failure when the control circuit determines that the failure occurs.

[0008]

According to the present invention, the control circuit controls the transistor, detects the state detected by the detection circuit, compares the control state of the transistor with the actual operating state of the transistor detected by the detection circuit, and When the control state and the actual operating state are different from each other, the load can be stopped and the failure can be detected by the failure notification circuit. Therefore, damage to the load due to the failure of the transistor can be prevented and the failure of the transistor can be known.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An activated water producing apparatus according to an embodiment of the present invention will be described below with reference to the drawings.

In FIG. 2, reference numeral 1 denotes a housing having a hollow interior.
A cup station 2 is formed in a concave shape on the front side of the housing 1, an exhaust window (not shown) is formed on the rear side of the housing 1, and legs 3 are attached to the lower surface. There is.

Further, in the case 1, there is provided a stand 4 which is set to a height approximately in the middle of the case 1, and a cylindrical water storage tank 5 is installed above the stand 4. . An opening 6 is formed on the upper surface of the water storage tank 5, and an openable / closable lid 7 is attached to the opening 6. Further, an openable / closable outer lid 8 is provided on the upper surface of the housing 1 so as to correspond to the opening 6.

Further, a heat insulating material 11 is attached to the peripheral surface and the lower surface of the water storage tank 5. A cooling pipe 12 is spirally wound around the lower portion of the water storage tank 5, and the cooling pipe 12 is connected to a cooling device 13 to store water based on the refrigerant supplied from the cooling device 13. Tank 5
To cool. In addition, as shown in FIG. 3, the cooling device 13 includes a compressor 13 provided on the base 4 on the cooling pipe 12.
a, a condenser 13b provided on the rear surface side of the housing 1, a dryer 13c and a capillary tube 13d are connected in series, and a condenser 13b is provided with a fan 13e.

A circulation pipe 14 for spirally improving the gas-liquid mixing ratio is wound around the water storage tank 5 above the cooling pipe 12 like the cooling pipe 12. Further, one end side of the circulation pipe 14 is connected to a U-shaped pipe 15, and the U-shaped pipe 15 is provided inside the water storage tank 5 and is an inner wall of a ceramics tank 17 in which granular porous ceramics 16 is stored. Are arranged along. Further, a discharge pipe 18 is attached from the lowermost part of the water storage tank 5 along the diametrical direction of the water storage tank 5, and a jet hole 19 composed of a plurality of small holes is formed on the side surface near the tip of the discharge pipe 18. Has been drilled. The position of the ejection hole 19 is preferably within 1/3 of the diameter of the water storage tank 5 from the side surface of the water storage tank 5. Further, when the water is ejected from the ejection hole 19, the water in the water storage tank 5 is agitated. Then, by stirring the water in the water storage tank 5, the cooling pipe 12
It is possible to prevent the inner surface side from freezing.

On the other hand, a circulation hole 21 is formed in the lower portion of the water storage tank 5, a mixing pipe 22 having a venturi type ejector structure is connected to the circulation hole 21, and ozone ( An ozone supply pipe 25 connected to an ozone generator 24 as a load for generating O ₃ ) is branched. Further, the ozone supply pipe 25 is provided with a backflow prevention valve for preventing water from flowing back from the mixing pipe 22 to the ozone generating unit 24 side. In addition, the mixing pipe 22
Is connected to a pump-in pipe 26 at the tip of the pump-in pipe 26, the pump-in pipe 26 is connected to the inflow side of the circulation pump 27, and the delivery side of the circulation pump 27 is connected to the other end of the circulation pipe 14 via a pump-out pipe 28. ing.

Further, 31 is a water supply pipe, and this water supply pipe
Reference numeral 31 is connected to a water pipe or the like, and this water supply pipe 31 is connected to a water supply pipe 33 via a filtration filter 32, and is connected above the side surface of the water storage tank 5. A water supply solenoid valve 34 is attached to the filtration filter 32.

Further, an overflow hole (not shown) is provided slightly above the portion of the water supply pipe 33 to which the water storage tank 5 is connected, and an overflow water distribution pipe 35 is connected from this overflow hole toward the rear of the housing 1. ing.

Further, a water outlet hole 41 is formed in the lower portion of the water storage tank 5 in parallel with the circulation hole 21, and a water outlet pipe 42 is connected to the water outlet hole 41. The water outlet pipe 42 is a water outlet solenoid valve. It is connected to a water discharge nozzle 44 provided in the cup station 2 via 43. The cup station 2 below the water discharge nozzle 44 has, for example, a mesh-shaped or striped opening.
A drain tray 45 is provided in the lower part of the. further,
A drain water distribution pipe 46 is connected to the drain pan 45, an overflow water distribution pipe 35 is connected to the drain water distribution pipe 46, and the drain water distribution pipe 46 is discharged to the rear of the housing 1 after the pipe is shared near the drain end. There is.

A water level gauge pipe 51 is provided from above the side surface of the water storage tank 5 in the lateral direction, and the water level gauge pipe is formed in a substantially U shape from the lower surface of the water storage tank 5.
52 is provided, and a water level gauge 53 is connected between the water level gauge pipe 51 and the water level gauge pipe 52. A ball or the like having a smaller specific gravity than the colored water is floated in the water level gauge 53 to improve the visibility. Further, an upper water level sensor 54 such as a photo sensor is attached at a position slightly lower than the overflow hole of the water level gauge pipe 51, and a photo sensor or the like is also provided at a position slightly higher than the bottom surface of the water storage tank 5 of the water level gauge pipe 52. Lower water level sensor 55
Is provided. Therefore, since the upper water level sensor 54 and the lower water level sensor 55 correspond to almost the entire height of the water storage tank 5, the water storage tank 5 can be utilized to the maximum extent, and the water flows in the water level gauge pipe 51 and the water level gauge pipe 52 during distribution. However, waste water and remaining water in the water level gauge pipe 51 and the water level gauge pipe 52 can be reduced, and almost no dead water is produced, resulting in hygiene. The upper water level sensor 54 turns on when it detects a ball, turns off when it does not detect a ball, and the lower water level sensor 55 turns off when it detects a ball, and turns on when it does not detect a ball.

Further, on the side surface of the base 4, a drive motor for a fan 13e for exhausting the atmosphere in the housing 1 to the rear of the housing 1.
57 is installed. Then, the tip of the ozone exhaust pipe 58 whose base end is connected to the vicinity of the uppermost part of the water storage tank 5 is
It is located near the fan 13e.

On the front side of the casing 1, an operation switch for starting an operation (not shown), an active water switch for emitting active water, an operation switch for indicating an operating state, and a water supply solenoid valve.
A water supply lamp showing the operation of 34, an appropriate temperature lamp showing that the water in the water storage tank 5 has an appropriate temperature, an activated water lamp showing the discharge of activated water, and the like are provided.

Next, the electrical construction of the ozone generator 24 will be described with reference to FIG.

In FIG. 1, 61 is a power supply circuit, and this power supply circuit 61 is composed of an IC chip IC.

A drive circuit 62 is connected to the power supply circuit 61. In the drive circuit 62, the transistor Q1 is connected to the IC chip IC, the collector of the transistor Q1 is connected to the emitter of the transistor Q2, and the transistor Q2 is connected to the emitter of the transistor Q2. The collector is connected to the ozone generator 24, that is, the transistor Q1 and the transistor Q2 are connected in series between the power supply circuit 61 and the ozone generator 24. A resistor R1 is connected between the emitter and base of the transistor Q1,
The base is connected to a port P1 of a control circuit 63 composed of an IC chip or the like via a resistor R2. A resistor R3 is connected between the emitter and the base of the transistor Q2, and the base is connected to the port P2 of the control circuit 63 via the resistor R4.

Further, the detection circuit 64 is connected from the collector of the transistor Q2 to the base of the transistor Q3 via the resistor R5, the collector of the transistor Q3 is connected to the power source via the resistor R6, and at the same time, to the control circuit 63. Port P
Connected to 3. Also, the base of the transistor Q3,
A resistor R7 is connected between the emitters.

The port P4 of the control circuit 63 is connected to a failure notification circuit 65 consisting of a series circuit of a resistor R8 and a light emitting diode LED1.

Next, the basic operation of the above embodiment will be described.

First, the water supply solenoid valve 34 is opened to supply the water supply pipe.
Water is supplied from 31 and purified by the filtration filter 32, and then water is supplied to the water storage tank 5 through the water supply pipe 33. Also,
The water that overflows from the water storage tank 5 is drained to the rear of the housing 1 from the overflow water distribution pipe 35.

When the water is stored in the water storage tank 5 and the water level rises to the upper water level sensor 54, the upper water level sensor 54
Detects a ball and determines that the inside of the water storage tank 5 is full, the water supply solenoid valve 34 is closed to stop the water supply to the water storage tank 5.

In this state, the compressor 13a is driven to supply a refrigerant into the cooling pipe 12 to lower the water in the water storage tank 5 to about 4 ° C. to minimize molecular aggregates, so-called clusters, and Use a temperature that maximizes the amount of dissolved oxygen.

At this time, the circulation pump 27 is driven, ozone is intermittently generated from the ozone generator 24, and water (H ₂ supplied to the mixing pipe 22 from the circulation hole 21 is supplied).
In (0), ozone (O ₃ ) generated from the ozone generating unit 24 is sucked and mixed by the Venturi effect in the mixing unit 23, and in water, the ozone becomes oxygen dissolved in the water and oxygen in the gas, and the oxygen in the water is generated. Include a lot. Further, ozone is used to sterilize water and deodorize chlorine.

When the ozone generator 24 is controlled, power is supplied from the power supply circuit 61 and the ports P1 and P2 of the control circuit 63 are set to the L level to turn on the transistor.
A base current is supplied to the bases of Q1 and the transistor Q2, and the transistor Q1 and the transistor Q2 are turned on / off according to the base current to supply power to the ozone generation unit 24.

Further, in the detection circuit 64, when there is an output from the transistor Q2, the transistor Q3 is turned on to turn on the control circuit 63.
The port P3 of the control circuit 63 is set to the L level, and when there is no output from the transistor Q2, the transistor Q3 is turned off to set the port P3 of the control circuit 63 to the H level.

In the control circuit 63, the ports P1 and P
When both 2 and P3 are L level, the transistor Q1
Also, the base current is supplied to the transistor Q2, and the transistors Q1 and Q2 are turned on, so it is determined to be normal.

On the other hand, when the ports P3 and P2 are at the L level but the port P3 is at the H level, the transistor Q1 is supplied even though the base current is supplied to the transistors Q1 and Q2. Since neither of the transistors Q2 and Q2 is turned on, it is determined that either the transistor Q1 or the transistor Q2 has a failure due to opening, and an output is made from the port P4 to cause the light emitting diode LED1 to emit light. In this case, the ozone generating section 24 does not operate, so the ozone generating section 24 does not continue to operate.

On the contrary, when the ports P1 and P2 are set to the H level but the port P3 is set to the L level, the transistors Q1 and Q2 are not supplied with the base current, but the transistors are not supplied. Since both Q1 and transistor Q2 are short-circuited, it is determined that the transistor Q1 and transistor Q2 have a short circuit failure, the ozone generator 24 is stopped, and an output is made from the port P4 to cause the light-emitting diode LED1 to emit light. . In this case, the light emission of the light emitting diode LED1 enables the failure to be known, and the ozone generator 24
Can be stopped.

Then, it flows from the pump-in pipe 26 into the circulation pump 27, and after being pressurized, the pump-out pipe 28
Flow into the circulation pipe 14 to increase the time and distance of contact between ozone and water to increase the mixing amount of ozone and water, take in a large amount of oxygen into the water, and then to the U-shaped pipe 15. When it is poured, the water supplied from the upper portion of the U-shaped pipe 15 further flows into the ceramics tank 17, and in the ceramics tank 17, the ceramics 16 generate an electromagnetic wave of 4 to 300 μm, and the water receives far infrared rays and receives oxygen. To supersaturate.

Then, water containing oxygen is jetted from the tip of the discharge pipe 18 to stir the inside of the water storage tank 5.

Further, the fan 13e is driven to rotate by the drive motor 57 to cool the condenser 13b, and at the same time, the atmosphere inside the casing 1, for example, ozone leaked from the water storage tank 5 or the ozone generating portion 24 is rearward of the casing 1. Exhaust to. Further, as the fan 13e rotates, the front end side of the ozone exhaust pipe 58 becomes negative pressure, and the ozone remaining in the water storage tank 5 is forcibly exhausted to the rear of the housing 1. In addition, a part of ozone that has not been gas-liquid mixed is exhausted to the rear of the housing 1 through the overflow water pipe 35. It should be noted that the ozone from the overflow water pipe 35 is discharged to the rear of the housing 1 to prevent the user from absorbing the ozone.

Then, the cup is placed on the cup station 2, the water discharge electromagnetic valve 43 is opened by operating a switch (not shown), and water is discharged from the water discharge nozzle 44 to the cup.

The water leaked without being supplied to the cup in the cup station 2 is drained from the drain pan 45 through the drain water pipe 46 to the rear of the housing 1.

In this way, when the amount of water stored in the water storage tank 5 decreases, the water level in the water level gauge 53 also drops and can be visually confirmed. Further, when the water level drops, the lower water level sensor 55 detects a ball, the lower water level sensor 55 detects the drop in water level, and the operation of the water discharge solenoid valve 43 is stopped, and the water supply solenoid valve 34 is opened to store water. Water is supplied to the tank 5.

When the water in the water storage tank 5 reaches 8 ° C. or higher, the cooling device 13 operates to cool the water in the water storage tank 5 again, and stops when it reaches 4 ° C.

When the water level drops, the lower water level sensor
55 may detect a drop in water level, stop the operation of the water discharge solenoid valve 43, and open the water supply solenoid valve 34 to automatically supply water to the water storage tank 5.

When cleaning the water storage tank 5, the outer lid 8 and the lid 7 may be opened to clean the water storage tank 5.

Further, a specific operation will be described with reference to FIG.

First, when the operation switch is operated, the operation lamp lights up, the water supply lamp lights up, and the water supply solenoid valve 34 opens. Then, the water level in the water storage tank 5 rises, the lower water level sensor 55 changes from OFF to ON, and the water storage tank 5 becomes full for a while, and the upper water level sensor 54 turns ON. The valve 34 closes.

When the upper water level sensor 54 is turned on, the circulation pump 27 and the compressor 13a are turned on, the ozone generator 24 is operated for 30 seconds, and is intermittently operated for 3 minutes, and the water temperature of the water storage tank 5 is 4 to 10. If it is in the range of ℃, the appropriate temperature lamp will light.

Further, when the water temperature reaches 4 ° C., the circulation pump 27
And the compressor 13a stops.

When the activated water switch is operated,
The water discharge solenoid valve 43 is opened, the activated water lamp blinks, and the water level in the water storage tank 5 decreases due to water discharge, whereby the upper water level sensor 54 is turned off. When the activated water switch is operated again, the water discharge solenoid valve 43 is closed and the activated water lamp is turned off.

Furthermore, when the water in the water storage tank 5 decreases,
The lower water level sensor 55 is turned off, the appropriate temperature lamp is turned off, the water discharge solenoid valve 43 is closed, and the water supply solenoid valve 34 is opened. If the water supply is cut off, the water supply lamp will blink.

When the operation switch is operated again while the water supply solenoid valve 34 is open, the water supply solenoid valve 34 is closed.

Further, when the activated water switch is operated, the water discharge solenoid valve 43 is opened and the water in the water storage tank 5 is discharged,
When the activated water switch is operated again, the water discharge solenoid valve 43 is closed.

When the operation switch is operated, the operation lamp is turned on, the water supply lamp is turned on, and the water supply solenoid valve 34 is opened. Then, the water level in the water storage tank 5 rises, the lower water level sensor 55 changes from OFF to ON, and the water storage tank 5 becomes full for a while, and the upper water level sensor 54 turns ON. The valve 34 closes.

Therefore, when there is residual water in the water storage tank 5, it is not re-supplied with water. Therefore, when the activated water switch is operated in normal times, the completed activated water is always ejected. Always best to drink.

Since the ozone generator 24 is intermittently operated, ozone can be effectively and efficiently mixed with water, and the leakage of ozone to the outside of the housing 1 can be minimized.

Further, even if ozone leaks into the housing 1, the fan 13e is driven, so that ozone that is heavier than air can be easily discharged to the outside of the housing 1. It is possible to prevent deterioration due to.

Furthermore, the circulation pump 27 is driven after the ozone generator 24 is stopped until the activated water is completed, and the activated water cannot be discharged for a while, so that the concentration of the dissolved ozone can be lowered and the human body is not adversely affected. Few.

By varying the driving time of the ozone generator 24, it is possible to increase the concentration of ozone during the time when the water quality deteriorates, such as in the rainy season, to obtain a delicious beverage.

[0059]

According to the load control device of the present invention, the transistor is controlled, the state detected by the detection circuit is detected, and the control state of the transistor and the actual operating state of the transistor detected by the detection circuit are detected. In comparison, when the control state of the transistor and the actual operating state are different, the load can be stopped and the failure can be detected by the failure notification circuit, so that damage to the load due to the failure of the transistor can be prevented and the failure of the transistor can be known. be able to.

[Brief description of drawings]

FIG. 1 is a circuit diagram showing an embodiment of a load control device of the present invention.

FIG. 2 is a cross-sectional view showing the activated water producing apparatus of the above.

FIG. 3 is a schematic diagram showing a cycle of activated water of the same as above.

FIG. 4 is a schematic diagram showing a cooling cycle of the above.

FIG. 5 is a timing chart showing the operation of the above active switch manufacturing apparatus.

[Explanation of symbols]

 24 Ozone generator as load 61 Power supply circuit 62 Drive circuit 63 Control circuit 64 Detection circuit 65 Fault notification circuit Q1 and Q2 transistors

Claims (1)

[Claims] 1. A power supply circuit, a drive circuit connected to the power supply circuit and connected to a load, and a plurality of transistors connected in series to drive the load, and an operation of each transistor of the drive circuit. A detection circuit for detecting and detecting the detected state of the detection circuit while controlling the transistor, comparing the control state and the operating state of the transistor, and stopping the load in the drive circuit when these are different. A load control device comprising: a control circuit that outputs a failure and a failure notification circuit that notifies a failure when the control circuit determines that the failure occurs.