JP6694251B2 - Residential distribution board - Google Patents

Description

The present invention relates to a residential distribution board used in a house or the like.

  One of the means to promote energy saving is to reduce standby power consumption. Standby power is the power that is consumed as long as it is connected to the power supply even when the main power supply of home electric appliances is turned off. For example, in a television device, there is a function to wait for an operation from a remote controller or an internal function. A small amount of power is consumed due to the operation function of the watch.

  As a method of reducing such standby power, there is a method of unplugging an electric home appliance that is not used and fundamentally cutting off the power supply to the electric home appliance. However, when unplugging unused home appliances, if there are a plurality of home appliances, it is necessary to repeat the operation of unplugging the plugs from the outlet panel by that number, which takes a lot of time and effort. In addition, in order to restore the home appliances that have been unplugged, it is necessary to repeat the operation of inserting each plug into the outlet panel. As described above, each time the power supply is cut off and the power supply is restored, there is a problem that it is difficult to carry out it in daily life.

  Therefore, in Patent Document 1, by providing a switch for reducing standby power on the outlet panel and using this switch, the same effect as pulling out the plug individually can be obtained, and a technique that saves labor is proposed. Has been done.

  However, if a switch is separately provided in this way, an opening / closing mechanism for reducing standby power is provided on the electric path to the load, and in addition to an opening / closing mechanism such as a breaker provided in the distribution board for the house, a plurality of switches are provided. The opening and closing mechanisms of will be arranged in series.

  For this reason, there is a problem in that the contact resistance of the contacts in these opening / closing mechanisms is increased as a whole, which causes power consumption.

  Therefore, as a method to easily reduce the standby power without increasing the contact contact resistance of the opening / closing mechanism without taking time and effort, a method of opening a branch circuit breaker (breaker) corresponding to unused home appliances and outlets Can be considered.

  According to this method, the load circuit corresponding to the branch circuit breaker can be opened at a time, so that the labor required can be reduced as compared with the case where individual plugs are unplugged. Further, since the switching mechanism is only the branch circuit breaker, the contact resistance of the contacts does not increase, and the problem that the power consumption increases by providing a separate switch in the electric path can be solved.

JP, 2009-254146, A

  However, the conventional switching mechanism of the branch circuit breaker is originally intended to interrupt the electric circuit in the event of an abnormality, and is not assumed to be used as a switch. In particular, a general branch circuit breaker having a mechanical contact has a shorter mechanical switching life than an ordinary switch, and its use as a switch is not recommended.

  The present invention is to solve the above-mentioned problems, and its main purpose is to have a function of automatically shutting off the electric circuit at the time of an abnormality, and also having an electric circuit opening / closing function for reducing standby power. Is to provide a distribution board for homes that can provide a sufficient switching life.

  Therefore, in the invention of the present application, a main switch that receives power from an external power source, a branch switch that is connected to the main switch to supply power to the load circuit, and a first circuit that detects an abnormality in the load circuit. A human operation reception unit that detects a human operation for reducing standby power of a load circuit and outputs a second circuit opening / closing signal, for a distribution board for a house equipped with an abnormality detection unit that outputs an opening / closing signal And a control unit that receives the first circuit opening / closing signal or the second circuit opening / closing signal and sends a branch opening / closing signal to the branch opening / closing switch, wherein the branch opening / closing switch receives the branch opening / closing signal. It is characterized in that it includes a semiconductor relay that opens and closes an electric path when the power is turned on and controls whether or not electric power is supplied to the load circuit.

  According to such a configuration, since the semiconductor relay for detecting the operation for shutting off at the time of abnormality and reducing the standby power is included, it has the function of automatically shutting off at the time of abnormality, and the opening / closing function for reducing the standby power. It is possible to provide a distribution board for a house that has a sufficient opening and closing life even if it has

  In addition, by setting a plurality of branch switches as simultaneous operation targets in the human operation reception unit and transmitting an opening / closing signal for the set branch switches to the control unit, simultaneous opening / closing operations of the plurality of branch switches can be performed. It may be characterized by having a collective operation function that can be performed.

  According to this configuration, since the switching signal for operating the plurality of branch switches is transmitted to the control unit, the simultaneous opening / closing operation of the plurality of branch switches can be performed.

Further, it may be characterized by including a display unit for displaying current information of the branch switch.

  According to this configuration, since the display unit is provided, the user can easily confirm the current open / closed states of the plurality of branch switches and the presence / absence of abnormality.

  As described above, according to the present invention, by including the semiconductor relay in the branch switch and controlling the presence / absence of power supply to the load circuit, while having the function of automatically shutting off in the event of an abnormality, and It is possible to provide a distribution board for a house that has a switching function for reducing standby power consumption and can obtain a sufficient switching life.

It is the schematic which showed the internal circuit of the distribution board for houses concerning this embodiment. It is a block diagram which controls a branch switch. It is a schematic diagram explaining the collective operation function of a human operation acceptance part. It is a schematic diagram explaining the collective operation function of a human operation acceptance part. It is a display screen figure explaining the display of the information of a display part and a branch switch. It is an example of an external view when a display part is attached to the cover surface of a distribution board for homes.

  Next, an embodiment of the present invention will be described in detail with reference to FIGS. The description of the preferred embodiments below is merely exemplary in nature and is not intended to limit the present invention, its application range, or its application. Further, in order to facilitate understanding of the invention, description of substantially the same or similar matters may be omitted.

1 and 2 show a first embodiment according to the present invention.
As shown in FIG. 1, a residential switchboard 100 includes a main switch 101 that receives power from an external power source and a plurality of branches that are electrically connected to the main switch 101 to supply power to a load circuit. The switch 102, the abnormality detection unit 103 that detects an abnormality in the load circuit and outputs a first circuit switching signal D1 described below, and the first circuit switching signal D1 are received, and the branch switching signal S1 is sent to the branch switch. A sending control unit 106 and a rectangular box-shaped housing 104 that houses these are provided. Further, a human operation receiving unit 105 that detects a human operation for reducing standby power of the load circuit and outputs a second circuit opening / closing signal D2 to the control unit 106 is provided.

  The main switch 101 includes an opening / closing mechanism (not shown) configured to open and close the electric path of the main switch 101 by a trip operation. The opening / closing mechanism is composed of an electromagnetic type instantaneous trip device, a bimetal type time delay type trip device, a trip coil, etc., and a load circuit side of the main switch 101 for overcurrent, short-circuit current, earth leakage, overvoltage, etc. Is a mechanism that mechanically automatically cuts off the electric path of the main switch 101 (hereinafter, also referred to as trip operation) when there is an abnormality in the energized state in (1). After the interruption, the handle 107 provided in the main switch 101 can be operated to mechanically close the electric path of the main switch 101.

  The branch switch 102 includes a semiconductor relay. A semiconductor relay is a kind of relay that opens and closes an electric path by receiving a signal from the outside, and a semiconductor is used as a mechanism for opening and closing the electric path. Unlike the mechanical switching, it has a long switching life because it opens and closes the circuit without contact.

  A plurality of branch switches 102 are arranged side by side in the longitudinal direction of the casing 104 on both sides of the branch switch connecting portion 108 in the vertical direction, and power from an external power source that has passed through the electric path of the main switch 101 is supplied. , To the load device 109 connected to the load circuit. The branch switch 102 is configured by using a semiconductor relay, and is a mechanism that receives a branch opening / closing signal S1 described later and opens / closes the electric path.

  The control unit 106 is connected to the abnormality detection unit 103, the human operation reception unit 105, and the branch switch 102. As shown in FIG. 2, when the control unit 106 receives a first circuit opening / closing signal D1 from the abnormality detecting unit 103 described later or a second circuit opening / closing signal D2 from the human operation receiving unit 105, the branch opening / closing signal. S1 is sent to the branch switch 102.

The abnormality detection unit 103 detects at least one abnormality when an abnormality such as an overcurrent, a short-circuit current, an electric leakage, an overvoltage occurs on the load circuit side of the branch switch 102, and outputs the first circuit switching signal D1 to the control unit. It has a function of sending to 106.

The abnormality detecting unit 103 detects the load circuit in which the abnormality has occurred and the branch switch 102 corresponding to the load circuit. For example, a current transformer (CT), a zero-phase current transformer (ZCT), a hall element, a sensor such as a voltage detector may be mentioned, but the present invention is not limited thereto.

The abnormality detection unit 103 is provided in the electric circuit corresponding to each of the plurality of branch switches 102 and detects an abnormality on the load circuit side.
Note that the abnormality detection unit 103 may be collectively provided for the plurality of branch switches 102 and configured to detect an abnormality on each load circuit side.

  The abnormality detection unit 103 instructs the control unit 106 to turn off the power supply to the load circuit in which the overcurrent is flowing when an overcurrent is detected in the abnormality of the electric circuit. The first circuit opening / closing signal D1 is sent. The control unit 106 receives the first circuit opening / closing signal D1 and outputs the branch opening / closing signal S1 for opening the electric path of the specific branch opening / closing switch 102 that is supplying power to the load circuit in which the overcurrent is flowing, to the specific branch opening / closing switch. Send to 102. Then, the specific branch switch 102 is opened, and the power supply to the load circuit is turned off.

  The human operation reception unit 105 has a function of receiving an opening / closing instruction for reducing standby power by the user and transmitting a second circuit opening / closing signal D2 to the control unit 106.

  For example, it is assumed that the user instructs the human operation receiving unit 105 to open the specific branch switch 102. The human operation reception unit 105 transmits a second circuit opening / closing signal D2 to the control unit 106 so as to turn off the specified specific branch switch 102. The control unit 106 receives the second circuit opening / closing signal D2 and opens the specific branch switch 102 instructed by the human operation receiving unit 105.

  Further, the human operation receiving unit 105 enables the return operation of the branch switch 102. For example, it is assumed that the user instructs the human operation receiving unit 105 to close the specific branch switch 102. The human operation receiving unit 105 sends a second circuit open / close signal D2 to the control unit 106 so as to turn on the specified specific branch switch 102. The control unit 106 receives the second circuit opening / closing signal D2 and causes the specific branch switch 102 instructed by the human operation receiving unit 105 to perform the closing operation.

  In this way, the branch switch 102 has a function of automatically shutting off when there is an abnormality in the energization state on the load circuit side of the branch switch 102 by the abnormality detection unit 103, the human operation reception unit 105, and the control unit 106. It also has a function of arbitrarily cutting off the power supply to the load device 109 in order to reduce the standby power consumed by the load device 109. Further, the branch switch 102 has a function for returning the power supply to the load device 109 by the human operation receiving unit 105 and the control unit 106.

  The branch switch 102 is configured to include a semiconductor relay. Since the semiconductor relay has no mechanical contact and generally has no mechanical switching life, even if the semiconductor relay is opened / closed on a daily basis to reduce standby power, the life of the branch switch 102 is not significantly affected.

  1 and 2, the branch switch 102, the abnormality detection unit 103, the human operation receiving unit 105, the control unit 106, and the branch switch connection unit 108 are separated from each other, but this is easy to understand. However, it is not intended that the positions of the individual units be separated from each other. That is, the residential distribution board 100 in which the branch switch 102 and the abnormality detection unit 103 are integrated, the residential distribution board 100 in which the human operation reception unit 105 and the control unit 106 are integrated, and the like are also included in the present invention. Embodiment of the present invention.

  Next, the collective operation function of the human operation acceptance unit 105, which is the second embodiment of the present invention, will be described.

  As shown in FIG. 3, the human operation receiving unit 105 has a function of setting a plurality of branch switches 102 as operation targets. Further, the human operation receiving unit 105 has a function of sending a second circuit opening / closing signal D2 to the control unit 106 so as to open / close a plurality of the set branch switches 102 at the same time.

  For example, when the six branch switches 102 are set to the setting 1 and the human operation receiving unit 105 is instructed to turn the setting 1 off, the six branch switches 102 set to the setting 1 are simultaneously turned off. For the setting, a plurality of settings can be performed, such as setting two of setting 1 and setting 2 for one branch switch 102. Further, the setting can be changed later. For example, the branch switch 102 once set to 1 can be changed to the setting 2 or the setting can be canceled.

  An example of daily use of the collective operation function will be described with reference to FIG. It is assumed that the first floor consists of an entrance, a living room, a kitchen, a toilet 1, and a washroom, while the second floor has a toilet 2, a bedroom, and a children's room. Each room has a load circuit to which the load device 109 can be connected, and the load circuit is supplied with power through the branch switch 102 for each room.

  For example, regarding the setting of the collective operation function, branch opening / closing of a room (a living room, a toilet 1, a washroom, a toilet 2, a bedroom, and a child's room in FIG. 3) to which the load device 109 that is not used when going out is connected Device 102, branch switch 102 of the room to which load device 109 that does not use setting 2 during sleep is connected (indicated as an entrance, living room, and washroom in FIG. 3), and setting 3 on the second floor all rooms (in FIG. 3) It is assumed that the branch switch 102 of the toilet 2, the bedroom, and the child's room is set. When the user goes out, the human operation reception unit 105 issues an instruction to “turn off setting 1”, so that only the branch switch 102 set to setting 1 is turned off. (See Figure 4)

As described above, since the power supply to the plurality of load devices 109 can be turned off by a single operation, the standby power consumption of the load devices 109 can be easily reduced. Further, when returning home, by issuing an instruction of “setting 1 is turned on” to the human operation reception unit 105, only the branch switch 102 set in the setting 1 is turned on, and it is possible to easily return to the state before going out. it can. Similarly, a plurality of load devices 109 that are not used for a long time are provided by instructing the human operation reception unit 105 to turn ON / OFF the setting 2 when sleeping and to turn the setting 3 ON / OFF when not using the second floor. It is easy to turn off the power supply to the.

  In this way, the collective operation function enables the plurality of branch switches 102 that have been set to be simultaneously opened and closed by a single operation. By using this, it is possible to easily open and close the branch switch 102 for reducing the standby power in daily life.

  In addition, the name of the collective operation function can be freely changed. For example, in the case of the above-mentioned example, if "Setting 1 is turned on" is changed to "go home" and "Setting 1 is turned off" is changed to "go out", the user gives an instruction of "go out" when going out and It is possible to intuitively understand that it is sufficient to give an instruction of "go home", convenience is improved, and the risk of erroneous operation is reduced.

  Next, a third embodiment of the present invention will be described.

  As shown in FIG. 5, the display unit 110 can display the opening / closing state 111 of the branch switch. For example, the control unit 106 and the display unit 110 are wirelessly connected to each other, the control unit 106 sends information on the current state of the branch switch 102, and the display unit 110 receives the information and displays the open / closed state 111 of each branch switch.

  It should be noted that the present invention is not limited to the above embodiment, and various modifications can be made without departing from the gist of the present invention.

  In addition, the display unit 110 may display the cause 112 of the branch switch opening when an abnormality occurs in the load circuit. For example, the abnormality information detected by the abnormality detection unit 103 is received, and the cause / condition 112 of the branch switch is displayed together with the cause 112 of the branch switch being opened, for example, the occurrence of an overcurrent, the occurrence of a short circuit, the occurrence of electric leakage, etc. The method such as is conceivable.

  The information displayed on the display unit 110 may be information other than the above. For example, the setting status 113 of the collective operation function shown in the second embodiment, the location information 114 of the load circuit to which the branch switch 102 supplies power, and the like. As shown in FIG. 5, by displaying what kind of collective operation function each branch switch 102 is set to and which load circuit is supplying power, the user can set the branch switch. The collective operation function can be used without making a mistake in 102.

  The display unit 110 may be integrated with the human operation receiving unit 105. For example, if the display unit 110 and the human body operation receiving unit 105 are configured with a touch panel or the like, the branch switch 102 can be intuitively operated by directly touching an image displayed on the display unit 110 to operate the human operation receiving unit 105. It is possible to open and close, set batch operation functions, and change settings.

  If the information of the branch switch 102 can be received, the number of display units 110 and the installation positions are not particularly specified.

  For example, as shown in FIG. 6, if it is attached to the surface cover of the residential distribution board 100, the opening / closing state of the branch switch 102 can be confirmed in the same manner as a conventional residential distribution board. Further, in the case of the display unit 110 integrated with the human operation reception unit 105 described above, for example, when using the collective operation function at bedtime, by installing the display unit 110 in the bedroom, the display unit 110 can be used at bedtime or when waking up. The batch operation function can be used in the bedroom, and by installing the display unit 110 at the entrance, it is possible to use the batch operation function at the entrance when going out or coming home. Becomes

100 Household distribution board 101 Main switch 102 Branch switch 103 Abnormality detection section 104 Case 105 Human operation reception section 106 Control section 107 Handle section 108 Branch switch connection section 109 Load device 110 Display section 111 Branch switch Switching status 112 Cause of branch switch opening 113 Batch operation function setting status 114 Load circuit location information D1 First circuit switching signal D2 Second circuit switching signal S1 Branch switching signal

Claims (3)

A main switch that receives power from an external power source,
A branch switch which is connected to the main switch and supplies electric power to the load circuit;
A residential distribution board equipped with an abnormality detection unit that detects an abnormality in the load circuit and outputs a first circuit opening / closing signal, and detects a human operation for reducing the standby power of the load circuit, A control for receiving a human operation receiving unit that outputs a second circuit opening / closing signal, the first circuit opening / closing signal, and the second circuit opening / closing signal, and sending a third circuit opening / closing signal to the branch switch. And a section,
The branch switch includes a semiconductor relay that opens and closes an electric path when receiving the third circuit open / close signal, and opens and closes power supply to the load circuit. Board. The human operation receiving unit sets a plurality of the branch switches as simultaneous operation targets, and transmits an opening / closing signal for the branch switches set as the simultaneous operation targets to the control unit, thereby The distribution board for a house according to claim 1, further comprising a collective operation function for performing simultaneous opening and closing operations. The residential distribution board according to claim 1 or 2, further comprising a display unit that displays current information about the branch switch.

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