WO2008044593A1 - Dispositif de surveillance de connexion à une ligne de mise à la masse et dispositif électrique - Google Patents

Dispositif de surveillance de connexion à une ligne de mise à la masse et dispositif électrique Download PDF

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Publication number
WO2008044593A1
WO2008044593A1 PCT/JP2007/069465 JP2007069465W WO2008044593A1 WO 2008044593 A1 WO2008044593 A1 WO 2008044593A1 JP 2007069465 W JP2007069465 W JP 2007069465W WO 2008044593 A1 WO2008044593 A1 WO 2008044593A1
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WIPO (PCT)
Prior art keywords
ground
grounding
wire
unit
terminal
Prior art date
Application number
PCT/JP2007/069465
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English (en)
Japanese (ja)
Inventor
Tomoyoshi Inoue
Original Assignee
Max Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Max Co., Ltd. filed Critical Max Co., Ltd.
Publication of WO2008044593A1 publication Critical patent/WO2008044593A1/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/52—Testing for short-circuits, leakage current or ground faults

Definitions

  • the present invention relates to a bathroom air conditioner that operates by being connected to a power supply line, a mist generating device, a hot water supply device, a waste disposal device, a washing machine, a refrigerator, a pump, a paper processing device, an electric floor heater, automatic A grounding wire connection monitoring device suitable for application to an earth monitoring system for monitoring whether or not a grounding wire maintained at a ground zero potential is connected to a grounding terminal provided in electrical equipment such as a vending machine, and The present invention relates to an electric device to which this is applied.
  • the electrostatic capacity connected to the power supply line Provided with a discriminator that inputs leakage current detection information obtained by detecting leakage current flowing through the conductive wire between the grounding point and the grounding terminal, and the grounding wire that is maintained at ground zero potential is used for grounding. If the leakage current flows through a predetermined conductive wire so that it can be determined whether or not it is connected to the terminal based on the leakage current detection information, the grounding wire that is maintained at the ground zero potential is connected to the grounding terminal.
  • the earth leakage breaker such as the distribution board or distribution board detects the leakage current (zero phase current) and breaks the defective circuit. Thereby, unintentional electric shock can be prevented and safety can be maintained.
  • JP 2003-107121 A discloses a branch circuit connection check device for a distribution board.
  • this check device when checking the connection of the branch circuit of the distribution board that has been grounded, it is possible to detect the zero-phase current for each branch blur of the distribution board equipped with a zero-phase current transformer.
  • a slave unit that can communicate with the master unit, and a load device is connected to each branch breaker at the place where electricity is used, and the zero-phase current detection information of the branch breaker is connected via the slave unit. Get from the machine. The detection result of the zero-phase current acquired from the master unit is displayed on the display means. If the check device is configured in this way, the connection state of the grounding pole of the distribution board to the ground can be easily checked by the slave unit.
  • Japanese Patent Laid-Open No. 2005-283375 discloses a leakage detection device and a bathroom air conditioner including the same.
  • a leakage current signal generating means and a determination means are provided, and when a leakage occurs in a grounded bathroom air conditioner, etc., a zero-phase current transformer (Hereinafter also referred to as the ZCT coil) detects a leakage current and generates a leakage signal.
  • the discriminating means receives the leakage current output from the ZCT coil and discriminates whether or not the leakage current is noise.
  • a mist generating device in a bathroom air conditioner, a mist generating device, a hot water supply device, a garbage processing device, a washing machine, a refrigerator, a pump, a paper processing device, an electric floor heater, a vending machine, etc. according to a conventional example.
  • Applied. See Japanese Laid-Open Patent Publication No. 07-235446 (Page 2 Fig. 1), Japanese Laid-Open Patent Publication No. 2003-10721 21 (Page 2 Fig. 1) and Japanese Laid-Open Patent Publication No. 2005-283375 (Page 2 Fig. 3).
  • a qualified contractor such as an electrician.
  • grounding terminal For electrical equipment in which the grounding terminal is located at a location where visual inspection is difficult, for example, below the back of the housing and the ground wire is connected at that location, the ground wire is connected. And if something goes wrong, it will be checked for the first time. Therefore, until then, the ground wire is disconnected from the grounding terminal, causing the detection to be delayed.
  • electrical equipment with a grounding terminal it is absolutely necessary to connect the ground wire, and it is necessary to be able to confirm the presence or absence of the connection after the ground wire is connected.
  • the ground line connection monitoring device includes at least a power supply line, a ground terminal provided at a predetermined position, a metal casing or substrate, and a metal casing or substrate. Between the ground point provided at a predetermined position, one of the capacitances connected to the power supply line and the other connected to the ground point, and the ground point connected to the capacitance and the grounding terminal.
  • This is a device for monitoring whether or not a grounding wire maintained at a ground zero potential is connected to a grounding terminal to be monitored in an electric device having a conductive wire connected to the!
  • the ground wire connection monitoring device inputs a current detecting information obtained from the detection unit that detects a current flowing through a conductive line from a capacitance ground point to a grounding terminal, and inputs a ground zero potential. And a determination unit for determining whether or not the grounding wire held by the terminal is connected to the grounding terminal.
  • the detection unit detects a current flowing through the conductive line connecting the ground point of the capacitance connected to the power supply line and the grounding terminal. . Based on this assumption, the discriminating unit inputs the current detection information obtained from the detection unit, and uses the current detection information to determine whether or not the ground wire maintained at the ground zero potential is connected to the grounding terminal. Based on the determination. For example, the discriminating unit compares the current detection information obtained from the detection unit with the reference setting information, and the ground line maintained at the ground zero potential is connected to the grounding terminal. It is determined whether it is connected or not.
  • An electrical device includes a power supply line, a grounding terminal provided at a predetermined position, a metal casing or substrate, and a metal casing or substrate provided at a predetermined position. Connected to the power supply line, the other connected to the grounding point, and the conductive point connected between the grounding point to which the electrostatic capacity is connected and the grounding terminal. And a ground wire connection monitoring device for monitoring whether a ground wire maintained at a ground zero potential is connected to the grounding terminal of the device main body! The ground wire connection monitoring device inputs the current flowing through the conductive line from the ground point of the capacitance to the grounding terminal and the current detection information obtained from the detection unit, and sets the ground zero potential. It has a discriminating unit for discriminating whether or not the grounding wire to be maintained is connected to the grounding terminal. It is that the features.
  • the ground line connection monitoring device according to the present invention is provided, and in the ground line connection monitoring device, the ground line maintained at the ground zero potential is connected to the grounding terminal. Whether or not it is determined is determined based on the detection information relating to the current flowing through the predetermined conductive line.
  • FIG. 1 is a block diagram showing a configuration example of a ground connection monitoring apparatus 100 as an embodiment according to the present invention.
  • FIG. 2 is a circuit diagram showing an operation example (part 1) of the ground connection monitoring apparatus 100.
  • FIG. 3 is a circuit diagram showing an operation example (part 2) of the ground connection monitoring device 100.
  • FIG. 4 is a circuit diagram showing an operation example (No. 3) of the ground connection monitoring apparatus 100.
  • FIG. 5 is a circuit diagram showing an operation example (No. 4) of the ground connection monitoring apparatus 100.
  • FIG. 6 is a conceptual diagram showing a configuration example of a bathroom air conditioning system 1 to which the ground connection monitoring device 100 as each embodiment is applied.
  • FIG. 7A is a cross-sectional view showing a configuration example of a bathroom air conditioner 3.
  • FIG. 7B is a cross-sectional view showing a configuration example of the bathroom air conditioner 3.
  • FIG. 8 is a block diagram showing a configuration example of the ground connection monitoring device 100 and its peripheral circuits in the bathroom air conditioner 3.
  • FIG. 9 is a front view showing a configuration example of an operation surface of the main operation unit 6 of the bathroom air conditioner 3.
  • FIG. 10 is a flowchart showing an example of connection monitoring of the ground line Le in the microcomputer 76 of the bathroom air conditioner 3 as the first embodiment.
  • FIG. 11 is a block diagram showing a configuration example of a heat pump type hot water supply apparatus 4 according to a second embodiment.
  • FIG. 12 is a block diagram showing a configuration example of the ground connection monitoring device 100 and its peripheral circuits in the hot water supply device 4.
  • FIG. 13 is a flowchart showing an example of connection monitoring of the ground wire Le in the microcomputer 76 of the hot water supply device 4.
  • FIG. 14 is a block diagram showing a configuration example of the ground connection monitoring device 100 and its peripheral circuits in the mist generating device 2 as a third embodiment.
  • FIG. 15 is a flowchart showing an example of connection monitoring of the ground wire Le in the microcomputer 76 of the mist generating device 2.
  • the present invention makes it possible to indicate that the grounding wire is not connected to the grounding terminal and the like, and that the grounding wire is connected to the grounding terminal! / ,!
  • the operation of the main body It is an object of the present invention to provide a ground wire connection monitoring device and an electric device that can be restricted.
  • the ground connection monitoring device 100 shown in FIG. 1 has the function of the ground wire connection monitoring device according to the present invention, and the grounding terminal (hereinafter referred to as the GND terminal 74) of the electrical device 700 to be monitored is ground zero. It is a device for monitoring whether a grounding wire (hereinafter referred to as grounding wire Le) maintained at a potential (0V) is connected.
  • grounding wire Le a grounding wire maintained at a potential (0V) is connected.
  • the electrical device 700 to be monitored has at least a casing 70 and AC power supply lines La and Lb (power supply lines).
  • the casing 70 is not limited to a metal box shape, and may be a metal substrate and a resin box that covers the substrate.
  • a ground terminal 74 is provided at a predetermined position of the casing 70, and is connected to a ground wire Le maintained at a ground zero potential.
  • a soft copper wire having a force S due to the electric device 700 for example, a rated current of 20 A or less, a diameter of 1.6 mm or more and a cross-sectional area of 1.25 mm 2 or more is used. It is 2.6 mm or more in the case of aluminum new wire.
  • ground wire Le is connected to the GND terminal 74, and the other end is connected to a ground electrode such as a ground rod embedded in the ground 80.
  • the grounding rod is grounded for Class A to Class D according to the operating voltage of 700 electrical equipment.
  • the GND terminal 74 is provided, for example, at a predetermined position of a casing 70 made of a metal or resin box-like body, and is usually easily connected to the ground wire Le.
  • AC power lines La and Lb and ground line Le are provided in a power terminal box that can be connected side by side.
  • the present invention is not limited to this, and it may be a device provided with the GND terminal 74 alone on the outer box.
  • a ground point P is provided at a predetermined position of the metal casing 70 or the substrate, and serves as a casing (internal) ground.
  • the electric device 700 has a Y connection type capacitor 71 (capacitance) in which one is connected to the power supply lines La and Lb and the other is connected to the ground point P.
  • the capacitor 71 is composed of capacitances Ca and Cb.
  • One end of the capacitance Ca is connected to the power supply line La, and one end of the capacitance Cb is connected to the power supply line Lb.
  • the other ends of the capacitances Ca and Cb are both connected to the ground point P.
  • Low voltage capacitance Ca and Cb with a withstand voltage of 250V and 2200pF are used.
  • a conductive line Lc is connected between a ground point P (internal housing ground point) to which the capacitor 71 is connected and the GND terminal 74.
  • Copper wire of 1.6 mm or more and 1.25 mm 2 or more is used for the conductive wire Lc, and the leakage current ic (Fig. 2) is connected to the ground pin Le that is maintained at the ground zero potential at the GND terminal 74. Flow).
  • the ground connection monitoring device 100 includes a ZCT coil 72 and a detection processing unit 73.
  • the ZCT coil 72 has a function of a detection unit, and detects a leakage current ic flowing through the conductive line Lc from the ground point of the capacitor 71 to the GND terminal 74.
  • the ZCT core 72 constitutes a current transformer in which a coil is wound in a ring shape a predetermined number of times.
  • the ZCT coil 72 has an annular main body and an output terminal.
  • the conductive wire Lc is wound around the annular main body portion of the ZCT coil 72 in a predetermined number of times.
  • the detection processing unit 73 has a function of a discriminating unit.
  • the detection information relating to the leakage current ic obtained from the ZCT coil 72 is input, and the ground wire Le that is maintained at the ground zero potential is connected to the GND terminal. Whether or not it is connected to 74 is determined.
  • the detection processing unit 73 uses an IV conversion circuit, an amplifier, a CPU, and the like. For example, the detection processing unit 73 compares the detection information related to the leakage current ic obtained from the ZC T coil 72 with the reference setting information, and the ground wire Le maintained at the ground zero potential is connected to the GND terminal 74. Determine whether or not
  • the detection processing unit 73 determines that the ground line Le that is maintained at the ground zero potential is connected to the GND terminal 74, and In the case where the leakage current ic does not flow through the conductive line Lc! /, It is determined that the ground line Le maintained at the ground zero potential is connected to the GND terminal 74! /, Na! /.
  • the display unit 6i is connected to the detection processing unit 73, and a display process is performed based on the determination result output from the unit 73.
  • a liquid crystal display device is used for the display unit 6i, and a warning is displayed based on the determination result signal output from the detection processing unit 73.
  • the display unit 6i may be a display that simply displays light.
  • a lighting unit that performs warning lighting processing based on the determination result signal output from the detection processing unit 73 is provided, and the ground processing unit 73 maintains a ground zero potential at the GND terminal 74 in this lighting unit.
  • the ground wire Le When it is determined that the ground wire Le is not connected, it may be lit or blinked based on the determination result signal.
  • the earth connection monitoring device 100 when configured, it is possible to monitor whether or not the earth wire Le maintained at the ground zero potential (0V) is connected to the GND terminal 74 of the electrical device 700 to be monitored. It becomes like this.
  • FIG. 2 is a circuit diagram showing an operation example (capacitance Ca) at the time of detecting a leakage current by the ground connection monitoring device 100.
  • the ground wire Le is truly connected to the GND terminal 74 correctly.
  • Electric equipment 700 shown in FIG. 2 is supplied with power from an outdoor pole transformer 81, for example.
  • the pole transformer 81 is provided with power input terminals U and V for U phase and V phase on the primary side.
  • a 6600V high-voltage wire is connected to the U-phase and V-phase power input terminals U and V.
  • low-voltage power output terminals u and N are provided on the secondary side of the pole transformer 81.
  • Class B grounding is applied to power output terminal N. In Class B grounding work, when the ground fault current of the line is I, the grounding resistance Rb is 150/1 [ ⁇ ] or less.
  • a 105V power supply line La is connected to the power output terminal u, and a power supply line Lb as a return path is connected to the power output terminal N.
  • the power output terminal u is set to the high potential side (105V) and the power output terminal N is set to the low potential side (0V) with respect to the polarity of the power supply.
  • the power supply lines La and Lb are connected to power terminals 78 and 79 of the electric device 700.
  • power output terminal u of pole transformer 81 power supply line La ⁇ power supply terminal 78 ⁇ capacitance Ca ⁇ grounding point P ⁇ conductive line Lc ⁇ GND terminal 74 ⁇ Ground wire Le ⁇ D class ground resistance Rd ⁇ Ground 80 ⁇ B class ground resistance Rb ⁇ Pole-type transformer Leakage current ic flows through the closed circuit leading to power output terminal N of 81. The leakage current is detected by the ZCT coil 72 and output to the detection processing unit 73.
  • the ZCT coil 72 needs to detect the leakage current ic only from the conductive wire Lc extending from the grounding point P.
  • the ZCT coil 72 is connected to the stage before the GND terminal 74.
  • Il 72 is provided.
  • the ground terminal 74 is connected only to the other end of the conductive line Lc extending from the ground point P. This means that the chassis ground must not be near GND terminal 74. In other words, if the chassis ground is taken between the location where the ZCT coil 72 is installed and the GND terminal 74, it will be authentic if the chassis falls into the above-mentioned temporary ground state, such as an installation location covered with a steel plate.
  • the detection processing unit 73 inputs the detection information regarding the leakage current ic obtained from the ZCT coil 72 and is maintained at the ground zero potential. Whether or not the ground wire Le is connected to the GND terminal 74 is determined based on the detection information regarding the leakage current ic. In the example described above, the detection processing unit 73 compares the detection information related to the leakage current ic obtained from the ZCT coil 72 with the reference setting information, and the ground wire Le maintained at the ground zero potential is connected to the GND terminal 74. It is determined whether or not it is done.
  • the bathroom air-conditioning system 1 shown in FIG. 6 constitutes an example of an electric device so that the air conditioner in the bathroom 101 is adjusted.
  • This bathroom air-conditioning system 1 includes a mist generating device 2, a bathroom air-conditioning device (air-conditioning device) 3, and a heat pump type hot water supply device 4!
  • the mist generating device 2 is disposed on the ceiling of the bathroom 101, and sprays hot water (mist) or water in the form of mist into the bathroom 101.
  • the mist generating device 2 is connected to a heat pump hot water supply device 4 and generates mist or mist water using water or hot water discharged therefrom.
  • the mist generating device 2 includes a solenoid valve unit 2A, a power supply unit 2B, and a nozzle unit 2C.
  • a plurality of solenoid valves are provided inside the solenoid valve unit 2A, and the supply destination of the hot water discharged from the hot water supply device 4 or the water from the water supply pipe is switched.
  • a power supply unit 2B is mounted on the solenoid valve unit 2A.
  • a ground connection monitoring device 100 is mounted inside the power supply unit 2B (not shown in FIG. 6; see FIG. 14). Akira)
  • a mist operation unit 7 is connected to the power supply unit 2B.
  • the power supply unit 2B is disposed on the back of the ceiling of the bathroom 101 together with the electromagnetic valve unit main body, and executes opening / closing control of a plurality of electromagnetic valves provided in the unit based on an operation command from the mist operation unit 7.
  • the solenoid valve unit 2A is placed near the inspection port on the ceiling of the bathroom 101.
  • the solenoid valve unit 2A includes a water supply (hot water supply) pipe 2a for receiving supply of water or hot water discharged from the hot water supply device 4, a nozzle pipe 2b for supplying hot water to the nozzle unit 2C, A drain pipe 2c for draining hot water is connected. Drain pipe 2c is piped outside the bathroom. Of course, piping to the bathroom 101 may be used.
  • a nozzle unit 2C is connected to the solenoid valve unit 2A, and is provided with a nozzle arranged toward the inside of the bathroom so as to eject water or hot water mist.
  • the nozzle unit 2C is attached to the ceiling surface, for example.
  • the bathroom air conditioner 3 is also installed on the ceiling of the bathroom 101 in the same manner as the electromagnetic valve unit 2A, and the bathroom 101 is heated and ventilated.
  • a ground connection monitoring device 100 is mounted inside the bathroom air conditioner 3 (not shown in FIG. 6; see FIG. 9).
  • an electric heater (PTC heater) built in the bathroom air conditioner 3 is used as a heat source for the bathroom air conditioner 3.
  • the bathroom air conditioner 3 is connected to a ventilation duct (not shown), and a ventilation duct is connected to the ventilation duct.
  • the ventilation grill has an exhaust port and is installed with the exhaust port facing the outside of the bathroom.
  • the above-described electromagnetic valve unit 2A is connected to a hot water supply device 4 to warm water using a heat source obtained by compressing refrigerant gas or air.
  • a ground connection monitoring device 100 is mounted inside the hot water supply device 4 (not shown in FIG. 6; see FIG. 13).
  • the hot water supply device 4 is disposed outdoors, and is configured to supply hot water to the mist generating device 2 and the bathroom 101, or supply water. Hot water from the hot water supply device 4 is also supplied to a hot water tap of a washbasin (not shown) in the washroom 102.
  • the mist generating device 2 and the bathroom air conditioner 3 are connected to the main operation unit 6 and the mist operation unit 7, and perform mist generation and bathroom environment adjustment operations based on these operations! .
  • the main operation unit 6 is an air conditioning remote control (remote control) device connected to a control unit (not shown in FIG. 6) built in the bathroom air conditioner 3 via a communication cable 6a.
  • the main operation unit 6 is attached to the wall of the washroom 102.
  • the mist operation unit 7 is a remote control device for mist connected to a control unit (not shown) built in the power supply unit 2B via a communication cable 7a.
  • the mist operation unit 7 is attached to the wall of the bathroom 101.
  • a human body detection sensor 69A is attached in the bathroom 101, for example, the front panel 26 of the bathroom air conditioner 3, and when the bathroom user enters the bathroom, it detects it and generates an entry detection signal. It is made to output.
  • the human body detection sensor 69A is configured by using, for example, an infrared sensor (see Japanese Patent Application Laid-Open No. 10-142351).
  • the bathroom air conditioning system 1 including the mist generating device 2, the bathroom air conditioner 3, and the hot water supply device 4 is configured.
  • a ground wire connection monitoring device 100 is provided for each of the mist generating device 2, the bathroom air conditioning device 3, and the hot water supply device 4, and the determination result is displayed on the display unit 6i of the main operation unit 6.
  • the bathroom air conditioner 3 shown in FIGS. 7A and 7B can be attached to the ceiling of the bathroom 101 shown in FIG. 6 and includes a main body case 17 that accommodates the circulation fan part 32 and the ventilation fan part 30. Equipped.
  • the body case 17 is made of a metal member such as iron.
  • the circulation fan unit 30 and the ventilation fan unit 30 are attached in a form in which the ventilation fan unit 30 overlaps the upper side of the circulation fan unit 32.
  • the circulation fan unit 32 forms a multi-blade impeller 34 whose rotation axis is in the vertical direction, a circulation fan motor 35 that rotationally drives the impeller 34, and an air passage. And a circulating fan case 36.
  • an opening as a circulation fan suction port 37 is formed on the lower surface along the axial direction of the impeller 34.
  • a blowout air passage 8 is formed along the tangential direction of the impeller 34, and an opening as a circulation fan blowout port 9 is formed in a lower surface communicating with the blowout air passage 8.
  • the ventilation fan unit 30 is a multi-blade type with the direction of the rotation axis set to the vertical direction to exhaust air.
  • An impeller 11, a ventilation fan motor 12 that rotationally drives the impeller 11, and a ventilation fan case 13 that forms an air passage are configured.
  • an opening as a ventilation fan suction port 14 is formed on the lower surface along the axial direction of the impeller 11.
  • the exhaust fan case 13 has an exhaust air passage 15 formed along the tangential direction of the impeller 11, and an opening as an exhaust port 16 is formed on one side surface communicating with the exhaust air passage 15. It is formed.
  • the circulating fan unit 32 described above is provided with the heater 10.
  • the heater 10 is disposed in the blowing air passage 8 in the vicinity of the circulation fan outlet 9.
  • a PTC (Positive Temperature Coefficient) heater having a configuration in which a number of fins are attached to a rod-like heater member along the longitudinal direction can be used.
  • the heater 10 is installed in the blowout air passage 8 so that the air passing through the blowout air passage 8 passes between the radiating fins.
  • the bathroom air conditioner 3 includes an exhaust duct joint 18a.
  • the exhaust duct joint 18a is attached to the exhaust port 16 on one side surface of the main body case 17 so as to communicate with the exhaust port 16 of the ventilation fan unit 30 described above.
  • the main body case 17 is provided with a sub suction port 17a and a sub suction duct joint 18b.
  • the sub suction port 17 a is formed on the other side surface of the main body case 17 other than the formation surface of the exhaust port 16.
  • a sub suction duct joint 18b is attached to the sub suction port 17a.
  • the bathroom air conditioner 3 includes a sub suction air passage 19.
  • the auxiliary suction air passage 19 is formed above the circulation fan portion 32 independently of the blowout air passage 8 of the circulation fan portion 32.
  • the sub-suction air passage 19 is configured to communicate the sub-suction port 17a with the ventilation fan suction port 14.
  • the bathroom air conditioner 3 includes a ventilation suction air passage forming member 20, and the ventilation suction air passage formation member 20 is attached to the lower side of the ventilation fan unit 30.
  • the ventilation suction air channel forming member 20 has an opening as a ventilation suction port 20a on the lower surface side of the main body case 17, and has a ventilation suction air channel 20b for communicating the ventilation suction port 20a and the ventilation fan suction port 14! /
  • the circulation fan suction port 37 is provided with a temperature sensor 21, and detects the temperature of the air sucked into the circulation fan unit 32 from the circulation fan suction port 37, that is, the temperature in the bathroom. .
  • a front panel 22 is provided on the lower surface of the main body case 17, and is attached to the main body case 17. It is configured to be removable.
  • the front panel 22 is formed with an inlet grille 22a opposite to the circulation fan inlet 37 of the circulation fan part 32 and the ventilation inlet 20a communicating with the ventilation fan part 30. Further, the front panel 22 is formed with a blower outlet grill 22b facing the circulation fan blower outlet 9 of the circulation fan portion 32.
  • the bathroom air conditioner 3 is configured, and air is circulated in the bathroom 101, the interior of the bathroom 101 is dried, or the bathroom 101 is exhausted to the outside for ventilation.
  • the bathroom air conditioner 3 shown in FIG. 8 has a power supply board 3A and a power supply terminal block 3B in addition to the heater 10, the main body case 17 (equipment main body), the motor 35, the ZCT coil 72, and the GND terminal 74.
  • the power terminal block 3B is provided with power terminals 78 and 79.
  • the GND terminal 74 is provided at a predetermined position of the power supply terminal block 3B of the main body case 17.
  • the body case 17 is obtained by processing a metal plate into a predetermined shape, and a grounding point P is provided at the case ground position.
  • the main body case 17 is provided with a power supply board 3A.
  • the power supply board 3A includes a terminal 3C for the coil, a capacitor 71, a detection processing unit 73, a motor drive circuit 81, a heater drive circuit 82, and a transformer. 83 and a rectifying / smoothing circuit 84 are provided.
  • the ZCT coil 72 and the detection processing unit 73 constitute the ground connection monitoring device 100 according to the present invention, and check whether the ground wire Le maintained at the ground zero potential is connected to the GND terminal 74 of the main body case 17. Monitor.
  • the AC power supply lines La and Lb are connected to the capacitor 71, the motor drive circuit 81, the heater drive circuit 82 and the transformer 83 via the power supply terminals 78 and 79.
  • One of the capacitors 71 is connected to the AC power supply lines La and Lb, and the other is connected to the ground point P.
  • a conductive line Lc is connected between the ground point P to which the capacitor 71 is connected and the GND terminal 74.
  • the ground terminal Le which is maintained at the ground zero potential, is connected to the GND terminal 74.
  • the detection processing unit 73 includes a detection circuit 75 and a microcomputer 76.
  • the ZCT coil 72 described above is connected to the detection circuit 75 via a coil terminal 3C.
  • the ZCT coil 72 detects the leakage current ic flowing in the conductive line Lc extending from the ground point P force of the capacitor 71 to the GND terminal 74, and outputs a leakage current detection signal (current ic ′) to the detection circuit 75.
  • the detection circuit 75 outputs a leakage current detection voltage Vc obtained by current-voltage conversion of the leakage current detection signal (current ic ′) output from the ZCT coil 72 to the microcomputer 76.
  • the transformer 83 connected to the above-described AC power supply lines La and Lb converts the AC power supply voltage into a low-voltage power supply. For example, the voltage of AC100V is dropped to 5V.
  • the rectifying / smoothing circuit 84 rectifies and smoothes a voltage of 5 V AC and supplies direct current (DC) power.
  • DC direct current
  • the DC power supply supplies DC voltage VCC and ground potential GND.
  • the microcomputer 76 that has been supplied with DC power from the rectifying / smoothing circuit 84 outputs a motor drive signal S81 and a heater drive signal S82, which are determination result signals. For example, when the microphone computer 76 determines that the ground wire Le maintained at the ground zero potential is not connected to the GND terminal 74, the motor drive signal for stopping the energization operation to the motor 35. S81 is output to the motor drive circuit 81. Similarly, a heater drive signal S82 for stopping the electric operation to the heater 10 is output to the heater drive circuit 82.
  • a motor drive circuit 81 is connected to the microcomputer 76, and the motor 35 is driven and controlled based on a motor drive signal S81 output from the microcomputer 76.
  • the motor drive signal S81 will not permit the motor 35 to be energized. Suspend motor control without energizing.
  • the heater drive circuit 82 is connected to the microcomputer 76, and the heater 10 is driven and controlled based on the heater drive signal S82 output from the microcomputer 76.
  • the microcomputer 76 determines that the ground wire Le is not connected to the GND terminal 74 by the microcomputer 76, the heater drive signal S82 is sent to the heater 10. Therefore, the heater control is suspended without energization.
  • the main operation unit 6 is connected to the power supply board 3A described above.
  • the main operation unit 6 has a remote control board 67.
  • the remote control board 67 is provided with a display 6i, a key matrix 68, and a microcomputer 69.
  • the power supply board 3A and the microcomputer 69 are connected by a communication cable 6a, and the microcomputer 69, which is supplied with DC power from the rectifying and smoothing circuit 84, connects the mist generating device 2, the bathroom air conditioner 3 and the hot water supply device 4. It is designed to be remote controlled.
  • the remote control board 67 is provided with terminals 67a to 67c for communication cables, for example.
  • the communication cable 6a is connected to the terminal 67a, and a determination result signal S6a is input as to whether or not the ground wire Le maintained at the ground zero potential from the bathroom air conditioner 3 is connected.
  • the communication cable 7a is connected to the terminal 67b, and a determination result signal S7a is input as to whether or not the ground wire Le maintained at the ground zero potential from the mist generator 2 is connected.
  • a communication cable 6c is connected to the terminal 67c, and a determination result signal S6c as to whether or not the ground wire Le maintained at the ground zero potential from the hot water supply device 4 is connected is input.
  • the microcomputer 69 outputs the display data D73 to the display 6i.
  • the display data D73 is based on at least the determination result of whether or not the earth wire Le maintained at the ground zero potential is connected to the ground mist potential in the mist generating device 2, the bathroom air conditioner 3 and the hot water supply device 4! If these ground wires Le are not connected, the corresponding ground wire Le is connected to the GND terminal 74 of the mist generating device 2! / ,! Similarly, the ground wire Le is connected to the terminal 74! /, Na! /, And the corresponding ground wire Le is connected to the ground terminal 74 of the hot water supply device 4! /, Na! /, And so on. It becomes contents.
  • the main operation section 6 shown in FIG. 9 has a bath mist button 6b for selecting the operation and stoppage of the bath mist mode.
  • the bathing mist button 6b is a button corresponding to a bathing mist button (not shown) of the mist operation unit 7 described above.
  • a light emitting element 6b ' such as an LED that is controlled to emit light when the mode is selected is provided.
  • the main operation unit 6 has a clothes drying button for selecting operation and stop of the clothes drying mode.
  • Button 6e cool air button 6e for selecting operation and shutdown in cool air mode
  • heating button 6f for selecting operation and shutdown in heating mode
  • operation in standard ventilation mode operation in bathroom drying mode
  • buttons 6d to 6g for example, light emitting elements 6d f, 6e, 6i f , 6gl ′, 6g2 ′ such as LEDs that are controlled to emit light during operation are provided.
  • the various buttons 6b, 6d, 6e, 6f, and 6g described above constitute a key matrix 68.
  • the main operation unit 6 displays the time, bathroom temperature, operation mode, and the like, and performs display unit 6i composed of an LCD (Liquid Crystal Display Element), 7-segment LED, etc., and timer time setting, etc. And an up / down key 3 ⁇ 4. Information operated and instructed by the main operation unit 6 is output to the microcomputer 69 as an operation signal S 6.
  • display unit 6i composed of an LCD (Liquid Crystal Display Element), 7-segment LED, etc., and timer time setting, etc.
  • an up / down key 3 ⁇ 4 Information operated and instructed by the main operation unit 6 is output to the microcomputer 69 as an operation signal S 6.
  • the display unit 6i is connected to the GND terminal 7 4 of the mist generating device 2 based on the display data D73!
  • the ground wire Le is connected to the GND terminal 74 of 3! /, NA! /, The fact that the corresponding ground wire Le is not connected to the GND terminal 74 of the hot water supply device 4, etc.
  • Display with text information A message such as “Please connect the ground wire to the GND terminal” is displayed. The message should be displayed on the display section 6i for each mist generator 2, bathroom air conditioner 3, and hot water heater 4 to which the ground wire Le is connected!
  • a connection monitoring example of the ground wire Le in 76 will be described.
  • the leakage current ic flowing through the conductive line Lc that connects the ground point P in the housing and the GND terminal 74 is detected, and whether or not the ground wire Le is connected to the GND terminal 74 is determined. If the ground wire Le is not connected to the GND terminal 74, it is displayed on the display 6i that the ground wire Le is not connected, and the energizing operation to the heater 10 and the motor 35 is suspended and not operated. Give examples of when to do so.
  • the ZCT coil 72 detects a leakage current ic flowing in the conductive line Lc that connects the ground point P in the housing and the GND terminal 74.
  • the detection circuit 75 The leakage current detection voltage Vc obtained by current-voltage conversion of the leakage current detection signal (current ic ′) output from the ZCT coil 72 is output to the microcomputer 76.
  • step ST 12 it is determined whether or not the ground wire Le maintained at the ground zero potential in the bathroom air conditioner 3 is connected to the GND terminal 74.
  • step ST13 the microcomputer 76 outputs a determination result signal indicating that energization operation to the heater 10 and the motor 35 is permitted.
  • the microcomputer 76 outputs to the motor drive circuit 81 a motor drive signal S81 indicating that energization operation to the motor 35 is permitted.
  • the motor drive circuit 81 drives the motor 35 based on the motor drive signal S81.
  • the microcomputer 76 outputs to the heater drive circuit 82 a heater drive signal S82 indicating that energization operation to the heater 10 is permitted.
  • the heater drive circuit 82 energizes the heater 10 based on the heater drive signal S82. This shifts to normal operation with the bathroom air conditioner 3.
  • step ST14 the microcomputer 76 notifies the microcomputer 69 of the main operation unit 6 of a determination result signal that displays the message “Please connect the ground wire” on the display unit 6i.
  • the microcomputer 69 outputs display data D73 to the display unit 6i.
  • the display unit 6i displays text information indicating that the corresponding ground wire Le is not connected to the GND terminal 74 of the bathroom air conditioner 3 based on the display data D73, and further displays that “the ground wire is connected to the GND terminal. Please display the message.
  • the display content may be limited to the latter display only.
  • step ST15 the microcomputer 76 executes energization non-permission processing for the heater 10, the motor 35, and the like. At this time, the microcomputer 76 is electrically connected to the motor 35. A motor drive signal S81 for not permitting operation is output to the motor drive circuit 81. The motor drive circuit 81 suspends the motor control without energizing since the motor drive signal S81 has the content of disabling energization of the motor 35.
  • the microcomputer 76 outputs a heater drive signal S82 for not permitting the energization operation to the heater 10 to the heater drive circuit 82.
  • the heater drive circuit 82 retains the heater control without energization because the heater drive signal S82 has the content of disabling energization of the heater 10.
  • the bathroom air conditioner 3 remains stopped without shifting to the normal operation.
  • the microcomputer 76 is reset or the energization operation can be performed by automatically detecting the leakage current ic flowing through the conductive wire Lc. State.
  • the ground connection monitoring device 100 As described above, according to the bathroom air conditioning system 1 as the first embodiment, the ground connection monitoring device 100 according to the present invention is provided, and the microcomputer 76 is connected to the ground that is maintained at the ground zero potential. Whether or not the line Le is connected to the GND terminal 74 is determined based on the leakage current detection voltage Vc. Therefore, when the leakage current ic flows through the conductive wire Lc, it can be determined that the ground wire Le that is maintained at the ground zero potential is connected to the GND terminal 74 of the bathroom air conditioner 3. When ic does not flow through the conductive wire Lc, it can be determined that the corresponding ground wire Le is not connected to the GND terminal 74.
  • the hot-water supply device 4 shown in FIG. 11 is also equipped with a ground connection monitoring device 100, which supplies hot water to the mist generating device 2, the bathroom 101, the washroom 102, the kitchen 103, etc. shown in FIG. To supply.
  • the hot water supply device 4 includes a heat pump unit 53 and a hot water storage tank unit 54.
  • the heat pump unit 53 generates hot water by heat exchange between the atmosphere and the refrigerant gas and heat exchange between the refrigerant gas and water.
  • the hot water tank unit 54 stores the hot water generated by the heat pump unit 53.
  • the hot water storage tank unit 54 has a hot water storage capacity of 300 to 500 liters!
  • the heat pump unit 53 includes an air heat exchanger 55 and a water heat exchanger 56.
  • the air heat exchanger 55 performs heat exchange between the atmosphere and the refrigerant gas, and raises the temperature of the refrigerant gas.
  • the water heat exchanger 56 performs heat exchange between the refrigerant gas and water to increase the temperature of the water.
  • the heat pump unit 53 is provided with a fan 55a and a refrigerant pipe 57.
  • the fan 55a is used to supply air to the air heat exchanger 55.
  • the refrigerant pipe 57 is connected between the air heat exchanger 55 and the water heat exchanger 56 and is used to circulate refrigerant gas between the air heat exchanger 55 and the water heat exchanger 56.
  • the heat pump unit 53 is provided with a compressor 58 in addition to the fan 55a and the refrigerant pipe 57.
  • the compressor 58 is disposed between the air heat exchanger 55 and the water heat exchanger 56, and is disposed downstream of the air heat exchanger 55.
  • the compressor 58 exchanges heat with the air heat exchanger 55 and flows through the refrigerant pipe 57. Used to further increase the temperature by compressing the refrigerant gas.
  • the heat pump unit 53 is provided with an expansion valve 59 between the air heat exchanger 55 and the water heat exchanger 56 and on the downstream side of the water heat exchanger 56.
  • the expansion valve 59 is used to expand the refrigerant gas that flows through the refrigerant pipe 57 after being heat-exchanged by the water heat exchanger 56 to lower the temperature.
  • a hot water storage tank unit 54 is connected to the heat pump unit 53, and includes a tank 60 for storing hot water generated in the heat pump unit 53.
  • the tank 60 is supplied with water at the lower side and hot water is supplied at the upper side, and stores the hot water in a layered state in which the temperature on the upper side is higher than that on the lower side.
  • the water heat exchanger 56 and the tank 60 are connected by a hot water pipe 61a and a cold water pipe 61b.
  • the hot water pipe 61a connects between the outflow side of the water heat exchanger 56 and the inflow port 60a provided on the upper side of the tank 60.
  • the cold water pipe 61b connects between the inflow side of the water heat exchanger 56 and the outlet 60b provided on the lower side of the tank 60.
  • a pump 61c is attached to the cold water pipe 61b.
  • the pump 61c also draws water from the outlet 60b of the tank 60 through the cold water pipe 6 lb and supplies it to the water heat exchanger 56, and the hot water generated through the water heat exchanger 56 passes through the hot water pipe 61a. To the tank 60 through the inlet 60a.
  • a water intake pipe 62 and a water supply pipe 63 are connected to the tank 60, respectively.
  • the intake pipe 62 is used to take in hot water stored in the tank 60.
  • the intake pipe 62 includes a high temperature part intake pipe 62a and an intermediate temperature part intake pipe 62b.
  • the high temperature section intake pipe 62a is connected to a high temperature section intake 60c provided at the upper part of the tank 60 independently of the inlet 60a.
  • the intermediate temperature intake pipe 62b is connected to an intermediate temperature intake 60d provided below the high temperature intake 60c.
  • the intake pipe 62 is provided with a switching valve 62c at the junction of the high temperature section intake pipe 62a and the medium temperature section intake pipe 62b, and is switched to the intake force S in the tank 60, the high temperature section intake 60c or the medium temperature section intake 60d. It is done.
  • the water supply pipe 63 is used to supply water to the tank 60.
  • the water supply pipe 63 is connected to, for example, a water supply port 60e provided in the lower part of the tank 60 independently of the outlet 60b, and includes a branch water supply pipe 63a branched in front of the tank 60.
  • the hot water storage tank unit 54 includes a hot water supply mixing valve 64 that mixes hot water supplied from the intake pipe 62 and water supplied from the branch water supply pipe 63a.
  • the hot water supply mixing valve 64 is provided at the junction of the intake water pipe 62 and the branch water supply pipe 63a, and switches the mixing ratio of the hot water supplied from the intake water pipe 62 and the water supplied from the branch water supply pipe 63a. Adjust the temperature of hot water supplied from 65. Normal temperature water can also be discharged.
  • the hot water supply pipe 65 is connected to the bathtub 101b of the bathroom 101 shown in FIG. 6, a shower (not shown), the bathroom undressing room 102 not shown !, the faucet and the faucet of the kitchen 103, etc. Supply.
  • a mist hot water supply pipe 65a is connected to the hot water supply pipe 65 connected to the bathroom 101.
  • the mist generator 2 is connected to the mist hot water supply pipe 65a branched here.
  • the atmosphere is supplied to the air heat exchanger 55 by the fan 55a, heat is exchanged with the refrigerant gas flowing through the refrigerant pipe 57, and the temperature of the refrigerant gas rises.
  • the refrigerant gas that has undergone heat exchange in the air heat exchanger 55 is compressed by the compressor 58, so that the temperature further increases.
  • the refrigerant gas that has been compressed by the compressor 58 and raised in temperature is supplied to the water heat exchanger 56.
  • the water heat exchanger 56 heat is exchanged between the refrigerant gas whose temperature has increased due to heat exchange and compression with the atmosphere and the water supplied from the hot water storage tank unit 54, and hot water is generated. Is done.
  • the refrigerant gas heat-exchanged by the water heat exchanger 56 is expanded by the expansion valve 59 to lower the temperature, and is supplied to the air heat exchanger 55 again.
  • the hot water generated by heat exchange in the water heat exchanger 56 is returned to the tank 60 through the hot water pipe 61a.
  • the tank 60 stores hot water and water in a state where the upper side has a high temperature and the lower side has a low temperature.
  • the hot water stored in the tank 60 is taken through the intake pipe 62.
  • the switching valve 62c allows hot water to be taken from the high temperature portion intake pipe 62a when the temperature of the supplied water is high, and takes hot water from the intermediate temperature portion intake pipe 62b when the temperature of the supplied water is low.
  • the hot water taken by the water intake pipe 62 is mixed with the water supplied from the branch water supply pipe 63b and the hot water supply mixing valve 64.
  • the temperature of the hot water supplied from the hot water supply pipe 65 is adjusted by switching the mixing ratio of hot water and water with the hot water supply mixing valve 64.
  • room temperature water can also be sent to the hot water supply pipe 65.
  • Hot water or water supplied from the hot water supply pipe 65 is distributed to the bathroom 101, the washroom 102, and the kitchen 103. As a result, hot water or water is supplied to the mist generating device 2 through the misted hot water supply pipe 65a branched from the hot water supply pipe 65.
  • the hot water supply device 4 is not a heat pump type using a natural refrigerant, it is not a heat pump type! / A hot water supply device using a gas as a heat source, even if it is an ordinary electric water heater, is of another heat source. Good.
  • the ground connection monitoring device 100 is disposed, for example, in the hot water supply device 4 adjacent to the heat pump unit 53 and the pump 61c.
  • Ground connection monitoring device 100 has AC power line La , Lb and ground wire Le are connected.
  • the hot water supply device 4 shown in FIG. 12 has a power supply board 3A ′ (equipment main body), a compressor 58, a pump 61c, a ZCT coil 72, a GND terminal 74, and a power supply terminal block 3B.
  • the power terminal block 3B is provided with power terminals 78, 79 force S.
  • the GND terminal 74 is provided at a predetermined position on the power supply terminal block 3B.
  • the power supply board 3A ′ is mounted on a casing (not shown) obtained by processing a metal plate into a predetermined shape, and a ground point P is provided at the casing ground position of the power supply board 3A ′.
  • the power supply board 3A ' is provided with a transformer 83, a rectifying / smoothing circuit 84, a pump drive circuit 85, and a compressor drive circuit 86.
  • the ZCT coil 72 and the detection processing unit 73 constitute the ground connection monitoring device 100 according to the present invention, and the ground wire Le maintained at the ground zero potential is connected to the GND terminal 74 of the power terminal block 3B! /, Watch for.
  • the AC power lines La and Lb are connected to the capacitor 71, the transformer 83, the pump drive circuit 85, and the compressor drive circuit 86 via the power terminals 78 and 79.
  • the capacitor 71, ground point P, ZCT coil 72, GND terminal 74, conductive wire Lc connection method, internal configuration example of the detection processing unit 73, and the discrimination function example in the microcomputer 76 are the first implementation. Since it is the same as that of an example, the description is abbreviate
  • the pump drive signal S85 obtained from the discrimination result of the microcomputer 76 is output to the pump drive circuit 85, and the compressor drive signal S86 is output to the compressor drive circuit 86, respectively.
  • the determination result signal S6c is output from the microcomputer 76 of the hot water supply device 4 to the main operation unit 6.
  • the transformer 83 connected to the AC power supply lines La and Lb described above converts the AC power supply voltage into a low-voltage power supply.
  • the rectifying / smoothing circuit 84 rectifies and smoothes a voltage of 5 V AC and supplies a direct current (DC) power to the detection circuit 75, the microcomputer 76, the pump driving circuit 85, and the compressor driving circuit 86.
  • the microcomputer 76 that has been supplied with DC power from the rectifying / smoothing circuit 84 outputs a pump drive signal S85 and a compressor drive signal S86, which are discrimination results. For example, the microcomputer 76 is maintained at the ground zero potential at the GND terminal 74.
  • the pump drive signal S85 for stopping the energization operation to the pump 61c is output to the pump drive circuit 85.
  • a compressor drive signal S86 for stopping the energization operation to the compressor 58 is output to the compressor drive circuit 86.
  • a pump drive circuit 85 is connected to the microcomputer 76, and the pump 61c is driven and controlled based on a pump drive signal S85 that also outputs the force of the microcomputer 76.
  • the pump drive circuit 85 determines that the pump drive signal S85 is not energized to the pump 6 lc. Since the content is permitted, the pump control is suspended without energization.
  • a compressor drive circuit 86 is connected to the microcomputer 76, and the compressor 58 is driven and controlled based on a compressor drive signal S 86 output from the microcomputer 76.
  • the compressor drive signal S86 does not turn on the power to the compressor 58. Since the content is permitted, the compressor control is suspended without energization.
  • the communication cable 6c is connected from the power supply board 3A 'to the main operation unit 6 of the bathroom air conditioner 3. Using this communication cable 6c, the ground wire Le maintained at the ground zero potential is connected from the hot water supply device 4 to the main operation unit 6! /, And a determination result signal S6c is output. .
  • connection monitoring of the ground wire Le in the microcomputer 76 of the hot water supply apparatus 4 as the second embodiment will be described.
  • the leakage current ic flowing in the conductive line Lc connecting the ground point P of the power supply board 3 A 'and the GND terminal 74 is detected, and the ground line Le is connected to the GND terminal 74 of the power supply terminal block 3B. If the ground wire Le is not connected to the GND terminal 74, the fact that the ground wire Le is not connected is displayed on the display 6i of the bathroom air conditioner 3 and compressed. Take the case where the motor operation to the machine 58 and the pump 61c is suspended and not operated!
  • microcomputer 76 of hot water supply device 4 relates to leakage current ic flowing through conductive line Lc at step ST21 of the flow chart shown in FIG. Get information.
  • the ZCT coil 72 is connected to the power supply board 3A '.
  • the leakage current ic flowing in the conductive line Lc connecting the ground point P and the GND terminal 74 is detected.
  • the detection circuit 75 outputs the leakage current detection voltage Vc obtained by current-voltage conversion of the leakage current detection signal (current ic ′) output from the ZCT coil 72 to the microcomputer 76 of the water heater 4.
  • step ST22 the ground wire Le maintained at the ground zero potential in the hot water supply device 4 is connected to the GND terminal.
  • Vc> 0V that is, when the ground wire Le maintained at the ground zero potential is connected to the GND terminal 74, the process proceeds to step ST23.
  • step ST23 the microcomputer 76 outputs a signal based on the determination result signal S6c to permit the energization operation to the compressor 58 and the pump 61c.
  • the microcomputer 76 of the hot water supply device 4 outputs to the pump drive circuit 85 a pump drive signal S85 that permits the energization operation of the pump 61c.
  • the pump drive circuit 85 drives the pump 61c based on the pump drive signal S85.
  • the microcomputer 76 outputs to the compressor drive circuit 86 a compressor drive signal S86 indicating that energization operation to the compressor 58 is permitted.
  • the compressor drive circuit 86 energizes the compressor 58 based on the compressor drive signal S86. As a result, the normal operation of the hot water supply device 4 is shifted to.
  • step ST24 the microcomputer 76 notifies the microcomputer 69 of the main operation unit 6 of a determination result signal S6c that displays the message “Please connect the ground wire” on the display unit 6i.
  • the microcomputer 69 outputs display data D73 to the display unit 6i.
  • the display unit 6i displays, based on the display data D73, text information indicating that “the corresponding ground wire Le is not connected to the GND terminal 74” of the hot water supply device 4, and further “connects the ground wire to the GND terminal. Please do so "message is displayed.
  • the display content may be stopped only for the latter display.
  • step ST25 the microcomputer 76 connects the compressor 58, the pump 61c, and the like. Execute the power denial process. At this time, the microcomputer 76 outputs to the pump drive circuit 85 a pump drive signal S85 indicating that the energization operation of the pump 61c is not permitted. The pump drive circuit 85 suspends pump control without energization because the pump drive signal S85 does not permit energization of the pump 61c.
  • the microcomputer 76 outputs to the compressor drive circuit 86 a compressor drive signal S86 indicating that the energization operation of the compressor 58 is not permitted.
  • the compressor drive circuit 86 suspends the compression control without energization because the compressor drive signal S86 has the content of disabling energization of the compressor 58.
  • the hot water supply device 4 remains stopped without shifting to the normal operation.
  • the microcomputer 76 is reset, or the current supply operation is possible by automatically detecting the leakage current ic flowing through the conductive wire Lc. It is made.
  • the ground connection monitoring device 100 according to the present invention is provided, and in the microcomputer 76 of the hot water supply device 4, Whether or not the ground wire Le maintained at the ground zero potential is connected to the GND terminal 74 is determined based on the leakage current detection voltage Vc. Therefore, when the leakage current ic flows through the conductive wire Lc, it can be determined that the ground wire Le maintained at the ground zero potential is connected to the GND terminal 74 of the hot water supply device 4, and the leakage current ic If the current does not flow through the conductive wire Lc, the corresponding ground wire Le is connected to the GND terminal 74, so that it can be discriminated as “!”.
  • the mist generating device 2 shown in FIG. 14 has a solenoid valve unit 2A, a power supply unit 2B (equipment main unit), a nozzle unit 2C, a ZCT coil 72, a GND terminal 74, and a power supply terminal block 3B.
  • the power terminal block 3B is provided with power terminals 78 and 79.
  • the GND terminal 74 is provided at a predetermined position on the power supply terminal block 3B.
  • the power supply unit 2B is mounted on a housing (not shown) obtained by processing a metal plate into a predetermined shape, and a ground point P is provided at the housing ground position of the power supply unit 2B.
  • the power supply unit 2B is provided with a nozzle unit drive circuit 87, a solenoid valve drive circuit 88, a transformer 83, and a rectifying and smoothing circuit 84.
  • the ZCT coil 72 and the detection processing unit 73 constitute the ground connection monitoring device 100 according to the present invention, and the ground wire Le maintained at the ground zero potential is connected to the GND terminal 74 of the power supply terminal block 3B. To monitor.
  • the AC power supply lines La and Lb are connected to the capacitor 71, the nozzle unit drive circuit 87, the solenoid valve drive circuit 88 and the transformer 83 via the power supply terminals 78 and 79.
  • the capacitor 71, ground point P, ZCT coil 72, GND terminal 74, conductive wire Lc connection method, internal configuration example of the detection processing unit 73, and the discrimination function example in the microcomputer 76 are the first and second examples. Since it is the same as that of an Example, the description is abbreviate
  • the nozzle drive signal S87 obtained from the discrimination result of the microcomputer 76 is output to the nozzle unit drive circuit 87, and the electromagnetic valve drive signal S88 is output to the electromagnetic valve drive circuit 88, respectively.
  • the discrimination result signal S7a is output from the microcomputer 76 to the main operation unit 6.
  • the transformer 83 connected to the AC power supply lines La and Lb described above converts the AC power supply voltage into a low-voltage power supply.
  • the rectifying / smoothing circuit 84 rectifies and smoothes a voltage of 5 V AC and supplies a direct current (DC) power to the detection circuit 75, the microcomputer 76, the nozzle unit driving circuit 87, and the solenoid valve driving circuit 88.
  • the microcomputer 76 receives the DC power supply from the rectifying / smoothing circuit 84, the microcomputer 76 outputs the nozzle drive signal S87 and the solenoid valve drive signal S88 based on the determination result.
  • the microcomputer 76 has a ground wire Le that is maintained at a ground zero potential at the GND terminal 74.
  • the nozzle drive signal S87 for stopping the energization operation to the nozzle unit 2C is output to the nozzle unit drive circuit 87.
  • the solenoid valve drive signal S88 for stopping the energization operation to the solenoid valve unit 2A is output to the solenoid valve drive circuit 88.
  • a nozzle unit drive circuit 87 is connected to the microcomputer 76, and the nozzle unit 2C is driven and controlled based on a nozzle drive signal S87 output from the microcomputer 76.
  • Nozzle unit drive circuit 87 uses the nozzle drive signal S87 to energize the nozzle unit 2C when the microcomputer 76 determines that the ground wire Le is connected to the GND terminal 74! / ,! Since the content is not allowed, the nozzle unit control is suspended without energizing.
  • a solenoid valve drive circuit 88 is connected to the microcomputer 76, and the solenoid valve unit 2A is driven and controlled based on the solenoid valve drive signal S88 output from the microcomputer 76.
  • the microcomputer 76 determines that the ground wire Le is not connected to the GND terminal 74 by the microcomputer 76, the solenoid valve drive circuit S8 8 does not permit energization of the solenoid valve unit 2A. Therefore, hold the solenoid valve control without energizing.
  • the communication cable 7a is connected from the power supply unit 2B to the main operation unit 6 of the bathroom air conditioner 3. Using this communication cable 7a, a determination result signal S7a is output from the mist generating device 2 to the main operating unit 6 to determine whether or not the ground wire Le maintained at the ground zero potential is connected!
  • connection monitoring of the ground wire Le in the microcomputer 76 of the mist generator 2 as the third embodiment will be described.
  • the leakage current ic flowing through the conductive line Lc connecting the ground point P of the power supply unit 2B and the GND terminal 74 is detected, and the ground wire Le is connected to the GND terminal 74 of the power supply terminal block 3B. If the ground wire Le is not connected to the GND terminal 74, the fact that the ground wire Le is not connected is displayed on the display 6i of the bathroom air conditioner 3, and the solenoid valve unit 2A List the case where the energization operation to the nozzle unit 2C is suspended and not operated!
  • step ST31 of the chart the microcomputer 76 acquires information on the leakage current ic flowing through the conductive line Lc.
  • the ZCT coil 72 detects a leakage current ic flowing in the conductive line Lc connecting the ground point P of the power supply unit 2B and the GND terminal 74.
  • the detection circuit 75 outputs a leakage current detection voltage Vc obtained by converting the leakage current detection signal (current ic ′) output from the ZCT coil 72 to a microcomputer 76.
  • step ST32 it is determined whether or not the ground wire Le maintained at the ground zero potential in the mist generating device 2 is connected to the GND terminal 74.
  • the determination result is Vc> 0V, that is, when the ground wire Le maintained at the ground zero potential is connected to the GND terminal 74, the process proceeds to step ST33.
  • step ST33 the microcomputer 76 outputs a signal based on the determination result signal S7a to permit the energization operation to the solenoid valve unit 2A and the solenoid unit 2C.
  • the microcomputer 76 outputs a nose drive signal S87 indicating that energization operation to the nose unit 2C is permitted to the nose unit drive circuit 87.
  • the nozzle unit drive circuit 87 drives the nozzle unit 2C based on the nozzle drive signal S87.
  • the microcomputer 76 outputs to the solenoid valve drive circuit 88 a solenoid valve drive signal S88 indicating that energization operation to the solenoid valve unit 2A is permitted.
  • the solenoid valve drive circuit 88 energizes the solenoid valve unit 2A based on the solenoid valve drive signal S88. As a result, the mist generator 2 is shifted to normal operation.
  • step ST34 the microcomputer 76 notifies the microcomputer 69 of the main operation unit 6 of a determination result signal that displays the message “Please connect the ground wire” on the display unit 6i.
  • the microcomputer 69 outputs the display data D73 to the display unit 6i. Based on the display data D73, the display unit 6i displays in the text information that “the corresponding ground wire Le is not connected to the GND terminal 74 of the mist generating device 2”, and further “connects the ground wire to the GND terminal. please do it. "Is displayed.
  • the display content may be limited to the latter display only.
  • step ST35 the microcomputer 76 executes energization non-permission processing for the solenoid valve unit 2A, the nozzle unit 2C, and the like.
  • the microcomputer 76 outputs to the nozzle unit drive circuit 87 a nozzle drive signal S87 indicating that the energization operation of the nozzle unit 2C is not permitted.
  • the nozzle unit drive circuit 87 suspends the nozzle unit control without energizing because the nozzle drive signal S87 has the content of disabling energization to the nozzle unit 2C.
  • the microcomputer 76 outputs to the solenoid valve drive circuit 88 a solenoid valve drive signal S88 indicating that the energization operation to the solenoid valve unit 2A is not permitted.
  • the solenoid valve drive circuit 88 suspends the solenoid valve control without energizing because the solenoid valve drive signal S88 does not permit energization of the solenoid valve unit 2A.
  • the mist generating device 2 remains stopped without shifting to the normal operation.
  • the microcomputer 76 can be reset, or the energization operation can be performed by automatically detecting the leakage current ic flowing through the conductor Lc. It becomes a state.
  • the ground connection monitoring device 100 according to the present invention is provided, and the microcomputer 76 has a ground zero potential. Whether or not the ground wire Le maintained at is connected to the GND terminal 74 is determined based on the leakage current detection voltage Vc. Therefore, when the leakage current ic flows through the conductive line Lc, it can be determined that the ground wire Le that is maintained at the ground zero potential is connected to the GND terminal 74 of the mist generating device 2, and the leakage current If ic does not flow through the conductive wire Lc, the corresponding ground wire Le is connected to the GND terminal 74, so that it can be discriminated as “!”.
  • the force described in the case where the capacitor 71 is connected to both the AC power supply lines La and Lb and the leakage current ic is detected is not limited to this. If the side is clear from the beginning, the capacitance Ca or Cb is connected only to the high potential (live) side, and the leakage current ic flowing through the capacitance Ca or Cb is detected. The force with which the source wire is connected to the GND terminal 74 may be determined. Also, detect the potential difference between the AC power lines La, Lb and GND, and connect the ground wire Le to the GND terminal 74!
  • the ground point P in the housing of the capacitor 71 is preferably arranged at a stage prior to the position where the ZCT coil 72 is attached. Further, it is preferable to connect the ground point P and the GND terminal 74 with the conductive wire Lc. This is to check whether the ground wire Le is connected to the GND terminal 74, so that the detection circuit 75 does not react erroneously when the housing is grounded.
  • the present invention relates to a bathroom air conditioner that operates by being connected to a power supply line, a mist generating device, a hot water supply device, a garbage processing device, a washing machine, a refrigerator, a pump, a paper processing device, an electric floor heater, automatic It is extremely suitable when applied to an earth monitoring system that monitors whether or not a grounding wire maintained at a ground zero potential is connected to a grounding terminal provided in an electrical device such as a vending machine.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

L'invention concerne un dispositif de surveillance de connexion de mise à la masse représenté sur la figure 1 qui surveille si une borne GND (74), qui doit être surveillée par un dispositif électrique, est reliée à une ligne de mise à la masse (Le) qui est maintenue pour être un point zéro de mise à la masse. Le dispositif inclut : une bobine de transition ZCT (72) destinée à détecter un courant de fuite circulant dans la ligne conductrice (Lc) à partir du potentiel de mise à la masse d'un condensateur (71) vers la borne GND (74), ainsi qu'une unité de traitement de détection (73) qui reçoit en entrée les informations de détection de courant de fuite et évalue si la ligne de mise à la masse (Le), maintenue pour être le point zéro de mise à la masse, est reliée à la borne GND (74). Grâce à cette configuration, si aucun courant de fuite ne circule dans la ligne conductrice (Lc), on évalue que la ligne de mise à la masse (Le), maintenue pour être le potentiel zéro de mise à la masse, n'est pas reliée à la borne GND (74).
PCT/JP2007/069465 2006-10-05 2007-10-04 Dispositif de surveillance de connexion à une ligne de mise à la masse et dispositif électrique WO2008044593A1 (fr)

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JP2006274319A JP4984805B2 (ja) 2006-10-05 2006-10-05 接地線接続監視装置及び電気機器
JP2006-274319 2006-10-05

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103823152A (zh) * 2014-03-11 2014-05-28 国家电网公司 一种直流接地检测装置
CN106154100A (zh) * 2016-06-23 2016-11-23 国网山东省电力公司济阳县供电公司 线路快速接地判断仪
CN106849006A (zh) * 2017-04-13 2017-06-13 广州心敢享节能科技有限公司 一种智能带漏电保护的电热水器控制器
CN110231536A (zh) * 2019-07-25 2019-09-13 云南电网有限责任公司电力科学研究院 一种电网漏电监测装置及方法
CN112285614A (zh) * 2020-10-15 2021-01-29 珠海优特电力科技股份有限公司 接地挂接位置和状态监测方法、装置和系统
CN115046665A (zh) * 2022-05-19 2022-09-13 深圳供电局有限公司 一种接地线智能监测系统及方法

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JP5550062B2 (ja) * 2009-03-04 2014-07-16 テンパール工業株式会社 接地極付のコンセント
JP5084893B2 (ja) * 2010-10-14 2012-11-28 三菱電機株式会社 電子制御装置
MA38243B1 (fr) * 2012-12-09 2017-02-28 Djamel Mekimah Interface a courant de defaut a la terre
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WO2014102954A1 (fr) * 2012-12-27 2014-07-03 新電元工業株式会社 Appareil électrique et procédé de confirmation de mise à la terre
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WO2020105745A1 (fr) * 2018-11-20 2020-05-28 Samsung Electronics Co., Ltd. Terminal de prise en charge de détection de fuite et procédé pour réaliser une détection de fuite pour le terminal
CN115769453A (zh) * 2020-07-06 2023-03-07 Enerpark株式会社 多功能无触电保护系统及保护方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08184626A (ja) * 1994-12-28 1996-07-16 Nippon Signal Co Ltd:The 接地線断線検出装置及び接地線断線検出装置を有する電気・電子機器
JP2000308254A (ja) * 1999-04-16 2000-11-02 Koshin Denki Kk 接地検出回路

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5826676U (ja) * 1981-08-11 1983-02-21 富士通株式会社 接地線切断検出機能付装置
JPS6243576A (ja) * 1985-08-20 1987-02-25 Taga Denki Kk 電子応用機器のア−ス検出回路
JPH09222450A (ja) * 1996-02-19 1997-08-26 Puroguresu Shiya:Kk 実効値演算型電圧トランデューサーを用いた漏洩電流 の計測および漏洩電流自動監視装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08184626A (ja) * 1994-12-28 1996-07-16 Nippon Signal Co Ltd:The 接地線断線検出装置及び接地線断線検出装置を有する電気・電子機器
JP2000308254A (ja) * 1999-04-16 2000-11-02 Koshin Denki Kk 接地検出回路

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103823152A (zh) * 2014-03-11 2014-05-28 国家电网公司 一种直流接地检测装置
CN106154100A (zh) * 2016-06-23 2016-11-23 国网山东省电力公司济阳县供电公司 线路快速接地判断仪
CN106154100B (zh) * 2016-06-23 2018-11-02 国网山东省电力公司济阳县供电公司 线路快速接地判断仪
CN106849006A (zh) * 2017-04-13 2017-06-13 广州心敢享节能科技有限公司 一种智能带漏电保护的电热水器控制器
CN110231536A (zh) * 2019-07-25 2019-09-13 云南电网有限责任公司电力科学研究院 一种电网漏电监测装置及方法
CN110231536B (zh) * 2019-07-25 2021-07-20 云南电网有限责任公司电力科学研究院 一种电网漏电监测装置及方法
CN112285614A (zh) * 2020-10-15 2021-01-29 珠海优特电力科技股份有限公司 接地挂接位置和状态监测方法、装置和系统
CN115046665A (zh) * 2022-05-19 2022-09-13 深圳供电局有限公司 一种接地线智能监测系统及方法

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