WO2023166670A1 - Power supply switching circuit and air conditioner - Google Patents

Power supply switching circuit and air conditioner Download PDF

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Publication number
WO2023166670A1
WO2023166670A1 PCT/JP2022/009167 JP2022009167W WO2023166670A1 WO 2023166670 A1 WO2023166670 A1 WO 2023166670A1 JP 2022009167 W JP2022009167 W JP 2022009167W WO 2023166670 A1 WO2023166670 A1 WO 2023166670A1
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WO
WIPO (PCT)
Prior art keywords
power supply
voltage
actuator
unit
control circuit
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PCT/JP2022/009167
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French (fr)
Japanese (ja)
Inventor
遼平 鈴木
友樹 田嶋
裕太 杉山
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三菱電機株式会社
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Priority to JP2024504272A priority Critical patent/JPWO2023166670A1/ja
Priority to PCT/JP2022/009167 priority patent/WO2023166670A1/en
Publication of WO2023166670A1 publication Critical patent/WO2023166670A1/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems

Definitions

  • the present disclosure relates to a power supply switching circuit and an air conditioner that switch power supply to an actuator mounted on equipment between an external power supply and an internal power supply.
  • Patent Document 1 discloses an air conditioner equipped with a battery that is charged by receiving electric power from a commercial power supply that is an external power supply and that is an internal power supply for supplying secondary power to an actuator of the air conditioner. is disclosed.
  • the state of power supply from the commercial power source is detected, and when it is determined that the supply of power has been interrupted, the power switching means controls the secondary power supply of the battery so that the controller can continue the control operation. It supplies power to the controller.
  • Patent Document 1 In the conventional technology represented by Patent Document 1 above, when the power from the commercial power supply is cut off, it is necessary to temporarily stop the air conditioning operation. Therefore, in the conventional technology, there is a problem that it is necessary to stop the operation of the device in order to switch to the power supply from the battery, which is the internal power source.
  • the present disclosure has been made in view of the above, and aims to obtain a power supply switching circuit capable of switching to power supply from an internal power supply without stopping the operation of the device.
  • the power supply switching circuit is arranged between an external power supply that is an AC power supply and an actuator, and supplies power to the actuator between the external power supply and the internal power supply. to switch.
  • the power supply switching circuit includes a control circuit having a control section, a voltage detection section, a first cutoff section, and a switching section.
  • the control unit is constantly applied with a voltage from an internal power source and controls the operation of the actuator.
  • the voltage detection unit detects the voltage value of the AC voltage output by the external power supply.
  • the first cutoff unit is arranged between the connection point where the external power supply and the voltage detection unit are connected and the control circuit, and cuts off the power supply to the actuator of the AC voltage applied to the actuator via the control circuit. .
  • the switching section closes so that the voltage output from the internal power supply is applied to the control circuit when the first cutoff section opens.
  • the power supply switching circuit it is possible to switch to the power supply from the internal power supply without stopping the operation of the device.
  • FIG. 1 is a diagram showing a configuration example of an air conditioner according to Embodiment 1.
  • FIG. Flowchart for explaining power supply switching operation in Embodiment 1 Time chart for explaining power supply switching operation in Embodiment 1 1 is a block diagram showing an example of a hardware configuration for realizing functions of a control unit according to Embodiment 1;
  • FIG. 4 is a block diagram showing another example of the hardware configuration for realizing the functions of the control unit according to Embodiment 1;
  • FIG. FIG. 10 is a diagram showing a configuration example of an air conditioner according to Embodiment 2;
  • FIG. 1 is a diagram showing a configuration example of an air conditioner 100 according to Embodiment 1.
  • FIG. An air conditioner 100 according to Embodiment 1 includes a battery 3 , an actuator 22 , and a power supply switching circuit 50 .
  • the power supply switching circuit 50 is arranged between the AC power supply 20 and the actuator 22 . While the AC power supply 20 is an external power supply, the battery 3 is an internal power supply built into the air conditioner 100 .
  • the power supply switching circuit 50 has a function of switching power supply to the actuator 22 between the AC power supply 20 and the battery 3 .
  • the power supply switching circuit 50 includes a voltage detection section 1 , a control circuit 2 , a cutoff section 4 and a switching section 5 .
  • the control circuit 2 also includes a control section 7 .
  • An actuator 22 is connected to the control circuit 2 .
  • An example of the actuator 22 is, although not shown, a blower fan of the indoor or outdoor unit of the air conditioner 100, or a flap that adjusts the wind direction of the indoor unit.
  • the control unit 7 of the control circuit 2 controls the operation of the actuator 22 by controlling the drive current flowing through the fan motor that drives the blower fan or the stepping motor that operates the flap.
  • the voltage detection unit 1 is connected to both ends of the AC power supply 20 and detects the voltage value of the AC voltage output by the AC power supply 20 .
  • the air conditioner 100 is an example of equipment, and the actuator 22 may be an apparatus or device provided in equipment other than the air conditioner.
  • the breaker 4 has a switching contact (not shown).
  • the opening/closing operation of the cutoff section 4 is controlled by the control section 7 .
  • the cutoff unit 4 is arranged on one electric wiring 8 connecting between the AC power source 20 and the voltage detection unit 1 .
  • the cutoff unit 4 is arranged between the control circuit 2 and one connection point 12 where the AC power supply 20 and the voltage detection unit 1 are connected.
  • the cutoff unit 4 may be arranged on the other electrical wiring 9 that connects the AC power supply 20 and the voltage detection unit 1 .
  • the breaker 4 is arranged between the control circuit 2 and the other connection point 13 where the AC power supply 20 and the voltage detector 1 are connected.
  • the AC voltage output from the AC power supply 20 is applied to the actuator 22 via the cutoff section 4 and the control circuit 2 .
  • the cutoff unit 4 is controlled by the control unit 7 and cuts off the power supply of the AC voltage applied to the actuator 22 to the actuator 22 .
  • the cutoff part 4 may be described as a "first cutoff part".
  • the switching unit 5 has switching contacts (not shown). The opening/closing operation of the switching section 5 is controlled by the control section 7 .
  • the switching unit 5 is connected between the electric wiring 8 and the battery 3 .
  • the contact of the switching unit 5 is controlled to close. Therefore, the switching unit 5 closes so that the voltage output from the battery 3 is applied to the control circuit 2 when the breaking unit 4 opens.
  • the control unit 7 is configured so that the voltage from the battery 3 is constantly applied. With this configuration, even when the power supply to the actuator 22 is switched from the AC power supply 20 to the battery 3 , the control unit 7 can switch the power supply without stopping the air conditioning operation of the air conditioner 100 . In addition, with this configuration, switching of power supply from the AC power supply 20 to the battery 3 can be self-sufficient by the air conditioner 100 without depending on an external signal.
  • the battery 3 is connected between the electrical wiring 8 and the electrical wiring 9 .
  • a connection point on the electric wiring 8 side exists between the breaker 4 and the control circuit 2 . Therefore, when the interrupter 4 and the control circuit 2 are electrically connected to each other, the battery 3 simultaneously supplies power to the actuator 22 and charges the battery 3 from the AC power supply 20. are connected to the power supply switching circuit 50 as shown in FIG.
  • FIG. 2 is a flowchart for explaining a power supply switching operation according to Embodiment 1.
  • FIG. FIG. 3 is a time chart for explaining the power supply switching operation according to the first embodiment. 2 and 3, the AC power supply 20 is called an "external power supply”.
  • battery “OFF” means that the battery 3 and the control circuit 2 are not electrically connected
  • battery “ON” means that the battery 3 and the control circuit 2 are electrically connected.
  • the control unit 7 controls opening/closing operations of the blocking unit 4 and the switching unit 5 based on the detection result of the voltage detection unit 1 .
  • the control unit 7 detects whether or not the AC voltage is a different voltage based on the detection result of the voltage detection unit 1 in a state where the power supply to the actuator 22 is from the external power supply (step S11) (step S11).
  • “different voltage” means that the AC voltage is not normal voltage, and is a concept including that the AC voltage is abnormal voltage.
  • the determination of whether or not the AC voltage is the different voltage is based on the first detection value of the voltage detection unit 1, which is a threshold value on the higher potential side.
  • determination is made based on the threshold value and a second threshold value which is a threshold value on the lower potential side. Specifically, when the detected value of the AC voltage is within the range between the first threshold value and the second threshold value, the control unit 7 determines that the AC voltage is normal voltage. Further, when the detected value of the AC voltage is outside the range between the first threshold value and the second threshold value, the control unit 7 determines that the AC voltage is the different voltage.
  • step S12 when the normal voltage is detected, the process of step S12 is repeated. On the other hand, when an abnormal voltage is detected in step S12, the control unit 7 switches to power supply from the battery 3 (step S13).
  • step S14 the control unit 7 detects whether or not the AC voltage is a different voltage based on the detection result of the voltage detection unit 1 (step S14).
  • step S14 if the different voltage is detected, that is, if the different voltage continues to be detected, the control unit 7 continues power supply from the battery 3 (step S15). After that, the process returns to step S14.
  • step S16 when a normal voltage is detected in step S14, the control unit 7 switches to power supply from the external power source (step S16). After that, the process returns to step S12, and the process from step S12 is repeated.
  • the period before time t1, the period from time t2 to time t3, and the period after time t4 indicate periods in which the detected value of the voltage detection unit 1 is normal voltage.
  • the contact of the breaking unit 4 is controlled to be closed and the contact of the switching unit 5 is controlled to be open so that the battery 3 is turned off.
  • a period from time t1 to time t2 and a period from time t3 to time t4 indicate periods in which the detected value of the voltage detection unit 1 is a different voltage.
  • the contact of the breaking unit 4 is controlled to open and the contact of the switching unit 5 is controlled to close so that the battery 3 is turned on.
  • FIG. FIG. 4 is a block diagram showing an example of a hardware configuration for realizing the functions of the control section 7 according to Embodiment 1. As shown in FIG. When realizing the functions of the control unit 7 in Embodiment 1, as shown in FIG. can be configured to include an interface 204 that performs
  • the processor 200 is an example of computing means.
  • the processor 200 may be a computing means called a microprocessor, microcomputer, microcontroller, CPU (Central Processing Unit), or DSP (Digital Signal Processor).
  • the memory 202 includes nonvolatile or volatile semiconductor memories such as RAM (Random Access Memory), ROM (Read Only Memory), flash memory, EPROM (Erasable Programmable ROM), EEPROM (registered trademark) (Electrically EPROM), Magnetic discs, flexible discs, optical discs, compact discs, mini discs, and DVDs (Digital Versatile Discs) can be exemplified.
  • the memory 202 stores a program for executing the functions of the control unit 7 in Embodiment 1 and the two threshold values described above.
  • the processor 200 exchanges necessary information via the interface 204, the processor 200 executes the program stored in the memory 202, and the processor 200 refers to the two thresholds stored in the memory 202.
  • the processing described above can be performed. Results of operations performed by processor 200 may be stored in memory 202 .
  • FIG. 5 is a block diagram showing another example of the hardware configuration for realizing the functions of the controller 7 according to the first embodiment.
  • processor 200 and memory 202 shown in FIG. 4 are replaced by processing circuitry 203 .
  • the two thresholds mentioned above are held in the processing circuit 203 .
  • the processing circuit 203 corresponds to a single circuit, a composite circuit, an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a combination thereof.
  • Information to be input to the processing circuit 203 and information to be output from the processing circuit 203 can be obtained via the interface 204 .
  • the power supply switching circuit is arranged between the external power supply, which is an AC power supply, and the actuator, and switches the power supply to the actuator between the external power supply and the internal power supply.
  • the power supply switching circuit includes a control circuit having a control section, a voltage detection section, a first cutoff section, and a switching section.
  • the control unit is constantly applied with a voltage from an internal power source and controls the operation of the actuator.
  • the voltage detection unit detects the voltage value of the AC voltage output by the external power supply.
  • the first cutoff unit is arranged between the connection point where the external power supply and the voltage detection unit are connected and the control circuit, and cuts off the power supply to the actuator of the AC voltage applied to the actuator via the control circuit. .
  • the switching section closes so that the voltage output from the internal power supply is applied to the control circuit when the first cutoff section opens. Accordingly, even when the power supply to the actuator is switched from the external power supply to the internal power supply, the power supply can be switched without stopping the air conditioning operation of the air conditioner. Also, the switching of power supply from the external power supply to the internal power supply can be self-contained by the air conditioner without depending on an external signal.
  • the first cutoff section opens and the switching section closes.
  • the operations of the first cutoff section and the switching section are controlled by the control section to which the voltage from the internal power supply is constantly applied.
  • the air conditioner according to Embodiment 1 includes an actuator, an internal power supply, and a power supply switching circuit that switches power supply to the actuator between an external power supply that is an AC power supply and an internal power supply.
  • the power supply switching circuit includes a control circuit having a control section, a voltage detection section, a first cutoff section, and a switching section.
  • the control unit is constantly applied with a voltage from an internal power source and controls the operation of the actuator.
  • the voltage detection unit detects the voltage value of the AC voltage output by the external power supply.
  • the first cutoff unit is arranged between the connection point where the external power supply and the voltage detection unit are connected and the control circuit, and cuts off the power supply to the actuator of the AC voltage applied to the actuator via the control circuit. .
  • the switching section closes so that the voltage output from the internal power supply is applied to the control circuit when the first cutoff section opens. Accordingly, even when the power supply to the actuator is switched from the external power supply to the internal power supply, the power supply can be switched without stopping the air conditioning operation of the air conditioner. Also, the switching of power supply from the external power supply to the internal power supply can be self-contained by the air conditioner without depending on an external signal.
  • the internal power supply supplies power to the actuator by the external power supply and the internal It is connected to the power supply switching circuit so that charging to the power supply is performed at the same time.
  • the internal power supply can be kept in an operable state without performing a special charging operation.
  • FIG. 6 is a diagram showing a configuration example of an air conditioner 100A according to Embodiment 2.
  • air conditioner 100A according to Embodiment 2 power supply switching circuit 50 in the configuration of air conditioner 100 according to Embodiment 1 shown in FIG. 1 is replaced with power supply switching circuit 50A.
  • a cutoff unit 6 is added to the configuration of FIG.
  • the breaker 6 has a switching contact (not shown).
  • the opening/closing operation of the cutoff section 6 is controlled by the control section 7 .
  • the cutoff unit 6 is arranged on the other electrical wiring 9 that connects the AC power supply 20 and the voltage detection unit 1 .
  • the cutoff unit 6 is arranged between the control circuit 2 and the other connection point 13 where the AC power supply 20 and the voltage detection unit 1 are connected.
  • Other configurations are the same as or equivalent to those in FIG. 1, and the same or equivalent components are denoted by the same reference numerals, and duplicate descriptions are omitted.
  • the blocking section 6 may be referred to as a "second blocking section".
  • the cutoff unit 6 is provided to ensure the operation of the power supply switching circuit 50A. Therefore, the blocking section 6 is controlled in the same manner as the blocking section 4 . Therefore, when the breaking section 4 closes, the breaking section 6 also closes, and when the breaking section 4 opens, the breaking section 6 also opens.
  • the power supply switching circuit 50A configured as described above, even if one of the contacts of the breakers 4 and 6 has a short-circuit fault, the other breaker that is not short-circuited will switch the power supply from the AC power supply 20.
  • the circuit section that supplies power is reliably cut off. As a result, it is possible to prevent a failure from spreading to circuit elements other than the cutoff units 4 and 6, and to reliably protect the power supply switching circuit 50A.
  • the power supply switching circuit according to the second embodiment is arranged on the other electrical wiring for electrically connecting the external power source and the control circuit, and performs the same operation as the first cutoff unit. It further comprises a second blocking part for As a result, it is possible to prevent a failure from spreading to circuit elements other than the first and second cutoff units, and to reliably protect the power supply switching circuit.

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Abstract

A power supply switching circuit (50) comprises: a control circuit (2) to which a voltage from a battery (3) is constantly applied and which has a control unit (7) for controlling the operation of an actuator (22); a voltage detection unit (1) that detects a voltage value of AC voltage output by an AC power supply (20); a cut-off unit (4) that is disposed between a connection point (12), at which the AC power supply (20) and the voltage detection unit (1) are connected, and the control circuit (2), and that cuts off power supply to the actuator (22) of the AC voltage applied to the actuator (22) via the control circuit (2); and a switching unit (5) that performs a closing operation, when the cut-off unit (4) performs an opening operation, so that the voltage output from the battery (3) is applied to the control circuit (2) .

Description

給電切替回路及び空気調和機Power supply switching circuit and air conditioner
　本開示は、機器に搭載されるアクチュエータへの給電を外部電源と内部電源との間で切り替える給電切替回路及び空気調和機に関する。 The present disclosure relates to a power supply switching circuit and an air conditioner that switch power supply to an actuator mounted on equipment between an external power supply and an internal power supply.
　下記特許文献１には、外部電源である商用電源からの電力を受けて充電されると共に、２次電力を空気調和機のアクチュエータに供給するための内部電源であるバッテリが搭載された空気調和機が開示されている。この特許文献１では、商用電源からの電力の供給状態を検出し、当該電力の供給が遮断されたと判断した場合には、コントローラが制御動作を継続できるように、電力切替手段によってバッテリの２次電力をコントローラに供給するようにしている。 Patent Document 1 below discloses an air conditioner equipped with a battery that is charged by receiving electric power from a commercial power supply that is an external power supply and that is an internal power supply for supplying secondary power to an actuator of the air conditioner. is disclosed. In this patent document 1, the state of power supply from the commercial power source is detected, and when it is determined that the supply of power has been interrupted, the power switching means controls the secondary power supply of the battery so that the controller can continue the control operation. It supplies power to the controller.
特開平１１－７２２６２号公報JP-A-11-72262
　上記特許文献１に代表される従来技術では、商用電源からの電力が遮断された場合には、空調運転を一旦停止する必要がある。このため、従来技術では、内部電源であるバッテリからの給電に切り替えるには、機器の運転を停止する必要があるという課題がある。 In the conventional technology represented by Patent Document 1 above, when the power from the commercial power supply is cut off, it is necessary to temporarily stop the air conditioning operation. Therefore, in the conventional technology, there is a problem that it is necessary to stop the operation of the device in order to switch to the power supply from the battery, which is the internal power source.
　本開示は、上記に鑑みてなされたものであって、機器の運転を停止せずに内部電源からの給電に切り替えることができる給電切替回路を得ることを目的とする。 The present disclosure has been made in view of the above, and aims to obtain a power supply switching circuit capable of switching to power supply from an internal power supply without stopping the operation of the device.
　上述した課題を解決し、目的を達成するため、本開示に係る給電切替回路は、交流電源である外部電源とアクチュエータとの間に配置され、アクチュエータへの給電を外部電源と内部電源との間で切り替える。給電切替回路は、制御部を有する制御回路と、電圧検知部と、第１の遮断部と、切替部とを備える。制御部は、内部電源による電圧が常時印加され、アクチュエータの動作を制御する。電圧検知部は、外部電源が出力する交流電圧の電圧値を検知する。第１の遮断部は、外部電源と電圧検知部とが接続される接続点と制御回路との間に配置され、制御回路を介してアクチュエータに印加される交流電圧のアクチュエータへの給電を遮断する。切替部は、第１の遮断部が開動作したときに内部電源から出力される電圧が制御回路に印加されるように閉動作する。 In order to solve the above-described problems and achieve the object, the power supply switching circuit according to the present disclosure is arranged between an external power supply that is an AC power supply and an actuator, and supplies power to the actuator between the external power supply and the internal power supply. to switch. The power supply switching circuit includes a control circuit having a control section, a voltage detection section, a first cutoff section, and a switching section. The control unit is constantly applied with a voltage from an internal power source and controls the operation of the actuator. The voltage detection unit detects the voltage value of the AC voltage output by the external power supply. The first cutoff unit is arranged between the connection point where the external power supply and the voltage detection unit are connected and the control circuit, and cuts off the power supply to the actuator of the AC voltage applied to the actuator via the control circuit. . The switching section closes so that the voltage output from the internal power supply is applied to the control circuit when the first cutoff section opens.
　本開示に係る給電切替回路によれば、機器の運転を停止せずに内部電源からの給電に切り替えることができるという効果を奏する。 According to the power supply switching circuit according to the present disclosure, it is possible to switch to the power supply from the internal power supply without stopping the operation of the device.
実施の形態１に係る空気調和機の構成例を示す図1 is a diagram showing a configuration example of an air conditioner according to Embodiment 1. FIG. 実施の形態１における給電切替動作の説明に供するフローチャートFlowchart for explaining power supply switching operation in Embodiment 1 実施の形態１における給電切替動作の説明に供するタイムチャートTime chart for explaining power supply switching operation in Embodiment 1 実施の形態１における制御部の機能を実現するためのハードウェア構成の一例を示すブロック図1 is a block diagram showing an example of a hardware configuration for realizing functions of a control unit according to Embodiment 1; FIG. 実施の形態１における制御部の機能を実現するためのハードウェア構成の他の例を示すブロック図4 is a block diagram showing another example of the hardware configuration for realizing the functions of the control unit according to Embodiment 1; FIG. 実施の形態２に係る空気調和機の構成例を示す図FIG. 10 is a diagram showing a configuration example of an air conditioner according to Embodiment 2;
　以下に添付図面を参照し、本開示の実施の形態に係る給電切替回路及び空気調和機について詳細に説明する。なお、以下に説明する実施の形態は例示であって、以下の実施の形態によって本開示の範囲が限定されるものではない。 A power supply switching circuit and an air conditioner according to an embodiment of the present disclosure will be described below in detail with reference to the accompanying drawings. It should be noted that the embodiments described below are examples, and the scope of the present disclosure is not limited by the following embodiments.
実施の形態１．
　図１は、実施の形態１に係る空気調和機１００の構成例を示す図である。実施の形態１に係る空気調和機１００は、バッテリ３と、アクチュエータ２２と、給電切替回路５０とを備える。給電切替回路５０は、交流電源２０とアクチュエータ２２との間に配置されている。交流電源２０が外部電源であるのに対し、バッテリ３は空気調和機１００に内蔵される内部電源である。給電切替回路５０は、アクチュエータ２２への給電を交流電源２０とバッテリ３との間で切り替える機能を有する。 Embodiment 1.
FIG. 1 is a diagram showing a configuration example of an air conditioner 100 according to Embodiment 1. FIG. An air conditioner 100 according to Embodiment 1 includes a battery 3 , an actuator 22 , and a power supply switching circuit 50 . The power supply switching circuit 50 is arranged between the AC power supply 20 and the actuator 22 . While the AC power supply 20 is an external power supply, the battery 3 is an internal power supply built into the air conditioner 100 . The power supply switching circuit 50 has a function of switching power supply to the actuator 22 between the AC power supply 20 and the battery 3 .
　給電切替回路５０は、電圧検知部１と、制御回路２と、遮断部４と、切替部５とを備える。また、制御回路２は、制御部７を備える。制御回路２には、アクチュエータ２２が接続されている。アクチュエータ２２の一例は、図示しないが、空気調和機１００の室内機もしくは室外機の送風ファン、又は室内機の風向きを調整するフラップである。制御回路２の制御部７は、送風ファンを駆動するファンモータ、又はフラップを操作するステッピングモータに流れる駆動電流を制御することで、アクチュエータ２２の動作を制御する。電圧検知部１は、交流電源２０の両端に接続されて交流電源２０が出力する交流電圧の電圧値を検知する。なお、空気調和機１００は機器の一例であり、アクチュエータ２２は、空気調和機以外の機器に具備される装置又はデバイスであってもよい。 The power supply switching circuit 50 includes a voltage detection section 1 , a control circuit 2 , a cutoff section 4 and a switching section 5 . The control circuit 2 also includes a control section 7 . An actuator 22 is connected to the control circuit 2 . An example of the actuator 22 is, although not shown, a blower fan of the indoor or outdoor unit of the air conditioner 100, or a flap that adjusts the wind direction of the indoor unit. The control unit 7 of the control circuit 2 controls the operation of the actuator 22 by controlling the drive current flowing through the fan motor that drives the blower fan or the stepping motor that operates the flap. The voltage detection unit 1 is connected to both ends of the AC power supply 20 and detects the voltage value of the AC voltage output by the AC power supply 20 . Note that the air conditioner 100 is an example of equipment, and the actuator 22 may be an apparatus or device provided in equipment other than the air conditioner.
　遮断部４は、図示しない開閉接点を有する。遮断部４の開閉動作は、制御部７によって制御される。遮断部４は、交流電源２０と電圧検知部１との間を繋ぐ一方の電気配線８に配置される。具体的に、遮断部４は、交流電源２０と電圧検知部１とが接続される一方の接続点１２と、制御回路２との間に配置される。なお、遮断部４は、交流電源２０と電圧検知部１との間を繋ぐもう一方の電気配線９に配置されていてもよい。この場合、遮断部４は、交流電源２０と電圧検知部１とが接続されるもう一方の接続点１３と、制御回路２との間に配置される。これらの何れかの構成により、交流電源２０から出力される交流電圧は、遮断部４及び制御回路２を介してアクチュエータ２２に印加される。また、遮断部４は、制御部７による制御を受け、アクチュエータ２２に印加される交流電圧のアクチュエータ２２の給電を遮断する。なお、本稿では、遮断部４を「第１の遮断部」と記載することがある。 The breaker 4 has a switching contact (not shown). The opening/closing operation of the cutoff section 4 is controlled by the control section 7 . The cutoff unit 4 is arranged on one electric wiring 8 connecting between the AC power source 20 and the voltage detection unit 1 . Specifically, the cutoff unit 4 is arranged between the control circuit 2 and one connection point 12 where the AC power supply 20 and the voltage detection unit 1 are connected. Note that the cutoff unit 4 may be arranged on the other electrical wiring 9 that connects the AC power supply 20 and the voltage detection unit 1 . In this case, the breaker 4 is arranged between the control circuit 2 and the other connection point 13 where the AC power supply 20 and the voltage detector 1 are connected. With any one of these configurations, the AC voltage output from the AC power supply 20 is applied to the actuator 22 via the cutoff section 4 and the control circuit 2 . In addition, the cutoff unit 4 is controlled by the control unit 7 and cuts off the power supply of the AC voltage applied to the actuator 22 to the actuator 22 . In addition, in this paper, the cutoff part 4 may be described as a "first cutoff part".
　切替部５は、図示しない開閉接点を有する。切替部５の開閉動作は、制御部７によって制御される。切替部５は、電気配線８とバッテリ３との間に接続される。ここで、遮断部４の接点が開に制御されるとき、切替部５の接点は閉に制御される。従って、切替部５は、遮断部４が開動作したときには、バッテリ３から出力される電圧が制御回路２に印加されるように閉動作する。 The switching unit 5 has switching contacts (not shown). The opening/closing operation of the switching section 5 is controlled by the control section 7 . The switching unit 5 is connected between the electric wiring 8 and the battery 3 . Here, when the contact of the breaking unit 4 is controlled to open, the contact of the switching unit 5 is controlled to close. Therefore, the switching unit 5 closes so that the voltage output from the battery 3 is applied to the control circuit 2 when the breaking unit 4 opens.
　制御部７は、バッテリ３による電圧が常時印加されるように構成されている。この構成により、制御部７は、アクチュエータ２２への給電が交流電源２０からバッテリ３に切り替わった場合でも、空気調和機１００による空調運転を停止せずに給電の切り替えを行うことができる。また、この構成により、交流電源２０からバッテリ３への給電の切り替えが外部信号に頼ることなく、空気調和機１００によって自己完結することができる。 The control unit 7 is configured so that the voltage from the battery 3 is constantly applied. With this configuration, even when the power supply to the actuator 22 is switched from the AC power supply 20 to the battery 3 , the control unit 7 can switch the power supply without stopping the air conditioning operation of the air conditioner 100 . In addition, with this configuration, switching of power supply from the AC power supply 20 to the battery 3 can be self-sufficient by the air conditioner 100 without depending on an external signal.
　また、バッテリ３は、電気配線８と電気配線９との間に接続されている。電気配線８側の接続点は、遮断部４と制御回路２との間に存在する。従って、バッテリ３は、遮断部４と制御回路２とが電気的に接続されているときは、バッテリ３によるアクチュエータ２２への給電と、交流電源２０によるバッテリ３への充電とが同時に実施されるように給電切替回路５０に接続されている。 Also, the battery 3 is connected between the electrical wiring 8 and the electrical wiring 9 . A connection point on the electric wiring 8 side exists between the breaker 4 and the control circuit 2 . Therefore, when the interrupter 4 and the control circuit 2 are electrically connected to each other, the battery 3 simultaneously supplies power to the actuator 22 and charges the battery 3 from the AC power supply 20. are connected to the power supply switching circuit 50 as shown in FIG.
　次に、制御部７による給電切替動作について、図２及び図３を参照して説明する。図２は、実施の形態１における給電切替動作の説明に供するフローチャートである。図３は、実施の形態１における給電切替動作の説明に供するタイムチャートである。なお、図２及び図３の説明では、交流電源２０を「外部電源」と呼ぶ。また、図３において、バッテリ「ＯＦＦ」は、バッテリ３と制御回路２とが電気的に接続されていないことを意味し、バッテリ「ＯＮ」は、バッテリ３と制御回路２とが電気的に接続されていることを意味する。 Next, the power supply switching operation by the control unit 7 will be described with reference to FIGS. 2 and 3. FIG. FIG. 2 is a flowchart for explaining a power supply switching operation according to Embodiment 1. FIG. FIG. 3 is a time chart for explaining the power supply switching operation according to the first embodiment. 2 and 3, the AC power supply 20 is called an "external power supply". In FIG. 3, battery "OFF" means that the battery 3 and the control circuit 2 are not electrically connected, and battery "ON" means that the battery 3 and the control circuit 2 are electrically connected. means that
　制御部７は、電圧検知部１の検知結果に基づいて、遮断部４及び切替部５の開閉動作を制御する。制御部７は、アクチュエータ２２への給電が外部電源からの給電である状態において（ステップＳ１１）、電圧検知部１の検知結果に基づいて交流電圧が異電圧であるか否かを検知する（ステップＳ１２）。ここで、「異電圧」とは、交流電圧が正常電圧ではないことを意味し、交流電圧が異常電圧であることを含む概念とする。なお、本稿では、交流電圧が異電圧であるか否かの判定は、図３に示されるように、電圧検知部１の検出値が、より高電位側のしきい値である第１のしきい値と、より低電位側のしきい値である第２のしきい値とに基づいて判定する実施例とする。具体的に、制御部７は、交流電圧の検出値が第１のしきい値と第２のしきい値との範囲内である場合には、交流電圧が正常電圧であると判定する。また、交流電圧の検出値が第１のしきい値と第２のしきい値との範囲外である場合、制御部７は、交流電圧が異電圧であると判定する。 The control unit 7 controls opening/closing operations of the blocking unit 4 and the switching unit 5 based on the detection result of the voltage detection unit 1 . The control unit 7 detects whether or not the AC voltage is a different voltage based on the detection result of the voltage detection unit 1 in a state where the power supply to the actuator 22 is from the external power supply (step S11) (step S11). S12). Here, "different voltage" means that the AC voltage is not normal voltage, and is a concept including that the AC voltage is abnormal voltage. In this paper, as shown in FIG. 3, the determination of whether or not the AC voltage is the different voltage is based on the first detection value of the voltage detection unit 1, which is a threshold value on the higher potential side. In this example, determination is made based on the threshold value and a second threshold value which is a threshold value on the lower potential side. Specifically, when the detected value of the AC voltage is within the range between the first threshold value and the second threshold value, the control unit 7 determines that the AC voltage is normal voltage. Further, when the detected value of the AC voltage is outside the range between the first threshold value and the second threshold value, the control unit 7 determines that the AC voltage is the different voltage.
　図２のフローチャートの説明に戻る。ステップＳ１２において、正常電圧が検知された場合、ステップＳ１２の処理が繰り返される。一方、ステップＳ１２において、異電圧が検知された場合、制御部７は、バッテリ３からの給電に切り替える（ステップＳ１３）。 Return to the description of the flowchart in FIG. In step S12, when the normal voltage is detected, the process of step S12 is repeated. On the other hand, when an abnormal voltage is detected in step S12, the control unit 7 switches to power supply from the battery 3 (step S13).
　更に、制御部７は、アクチュエータ２２への給電がバッテリ３から行われているステップＳ１３の状態において、電圧検知部１の検知結果に基づいて交流電圧が異電圧であるか否かを検知する（ステップＳ１４）。ステップＳ１４において、異電圧が検知された場合、即ち異電圧が継続して検知された場合、制御部７は、バッテリ３からの給電を継続する（ステップＳ１５）。その後、ステップＳ１４の処理に戻る。一方、ステップＳ１４において、正常電圧が検知された場合、制御部７は、外部電源からの給電に切り替える（ステップＳ１６）。その後、ステップＳ１２に戻り、ステップＳ１２からの処理が繰り返される。 Furthermore, in the state of step S13 in which power is supplied to the actuator 22 from the battery 3, the control unit 7 detects whether or not the AC voltage is a different voltage based on the detection result of the voltage detection unit 1 ( step S14). In step S14, if the different voltage is detected, that is, if the different voltage continues to be detected, the control unit 7 continues power supply from the battery 3 (step S15). After that, the process returns to step S14. On the other hand, when a normal voltage is detected in step S14, the control unit 7 switches to power supply from the external power source (step S16). After that, the process returns to step S12, and the process from step S12 is repeated.
　図３において、時刻ｔ１以前の期間、時刻ｔ２から時刻ｔ３までの期間、及び時刻ｔ４以降の期間は、電圧検知部１の検出値が正常電圧である期間を示している。これらの期間では、バッテリ３がＯＦＦとなるように、遮断部４の接点が閉に制御され、切替部５の接点が開に制御される。また、時刻ｔ１から時刻ｔ２までの期間、及び時刻ｔ３から時刻ｔ４までの期間は、電圧検知部１の検出値が異電圧である期間を示している。これらの期間では、バッテリ３がＯＮとなるように、遮断部４の接点が開に制御され、切替部５の接点が閉に制御される。 In FIG. 3, the period before time t1, the period from time t2 to time t3, and the period after time t4 indicate periods in which the detected value of the voltage detection unit 1 is normal voltage. During these periods, the contact of the breaking unit 4 is controlled to be closed and the contact of the switching unit 5 is controlled to be open so that the battery 3 is turned off. A period from time t1 to time t2 and a period from time t3 to time t4 indicate periods in which the detected value of the voltage detection unit 1 is a different voltage. During these periods, the contact of the breaking unit 4 is controlled to open and the contact of the switching unit 5 is controlled to close so that the battery 3 is turned on.
　次に、実施の形態１における制御部７の機能を実現するためのハードウェア構成について、図４及び図５の図面を参照して説明する。図４は、実施の形態１における制御部７の機能を実現するためのハードウェア構成の一例を示すブロック図である。実施の形態１における制御部７の機能を実現する場合には、図４に示されるように、演算を行うプロセッサ２００、プロセッサ２００によって読みとられるプログラムが保存されるメモリ２０２、及び信号の入出力を行うインタフェース２０４を含む構成とすることができる。 Next, a hardware configuration for realizing the functions of the control unit 7 in Embodiment 1 will be described with reference to FIGS. 4 and 5. FIG. FIG. 4 is a block diagram showing an example of a hardware configuration for realizing the functions of the control section 7 according to Embodiment 1. As shown in FIG. When realizing the functions of the control unit 7 in Embodiment 1, as shown in FIG. can be configured to include an interface 204 that performs
　プロセッサ２００は、演算手段の一例である。プロセッサ２００は、マイクロプロセッサ、マイクロコンピュータ、マイクロコントローラ、ＣＰＵ（Ｃｅｎｔｒａｌ　Ｐｒｏｃｅｓｓｉｎｇ　Ｕｎｉｔ）、又はＤＳＰ（Ｄｉｇｉｔａｌ　Ｓｉｇｎａｌ　Ｐｒｏｃｅｓｓｏｒ）と称される演算手段であってもよい。また、メモリ２０２には、ＲＡＭ（Ｒａｎｄｏｍ　Ａｃｃｅｓｓ　Ｍｅｍｏｒｙ）、ＲＯＭ（Ｒｅａｄ　Ｏｎｌｙ　Ｍｅｍｏｒｙ）、フラッシュメモリ、ＥＰＲＯＭ（Ｅｒａｓａｂｌｅ　Ｐｒｏｇｒａｍｍａｂｌｅ　ＲＯＭ）、ＥＥＰＲＯＭ（登録商標）（Ｅｌｅｃｔｒｉｃａｌｌｙ　ＥＰＲＯＭ）といった不揮発性又は揮発性の半導体メモリ、磁気ディスク、フレキシブルディスク、光ディスク、コンパクトディスク、ミニディスク、ＤＶＤ（Ｄｉｇｉｔａｌ　Ｖｅｒｓａｔｉｌｅ　Ｄｉｓｃ）を例示することができる。 The processor 200 is an example of computing means. The processor 200 may be a computing means called a microprocessor, microcomputer, microcontroller, CPU (Central Processing Unit), or DSP (Digital Signal Processor). The memory 202 includes nonvolatile or volatile semiconductor memories such as RAM (Random Access Memory), ROM (Read Only Memory), flash memory, EPROM (Erasable Programmable ROM), EEPROM (registered trademark) (Electrically EPROM), Magnetic discs, flexible discs, optical discs, compact discs, mini discs, and DVDs (Digital Versatile Discs) can be exemplified.
　メモリ２０２には、実施の形態１における制御部７の機能を実行するプログラム及び前述した２つのしきい値が格納されている。プロセッサ２００は、インタフェース２０４を介して必要な情報を授受し、メモリ２０２に格納されたプログラムをプロセッサ２００が実行し、メモリ２０２に格納された２つのしきい値をプロセッサ２００が参照することにより、上述した処理を行うことができる。プロセッサ２００による演算結果は、メモリ２０２に記憶することができる。 The memory 202 stores a program for executing the functions of the control unit 7 in Embodiment 1 and the two threshold values described above. The processor 200 exchanges necessary information via the interface 204, the processor 200 executes the program stored in the memory 202, and the processor 200 refers to the two thresholds stored in the memory 202. The processing described above can be performed. Results of operations performed by processor 200 may be stored in memory 202 .
　また、実施の形態１における制御部７の機能の実現する場合には、図５に示す構成でもよい。図５は、実施の形態１における制御部７の機能を実現するためのハードウェア構成の他の例を示すブロック図である。図５では、図４に示すプロセッサ２００及びメモリ２０２が処理回路２０３に置き替えられている。前述した２つのしきい値は、処理回路２０３に保持される。処理回路２０３は、単一回路、複合回路、ＡＳＩＣ（Ａｐｐｌｉｃａｔｉｏｎ　Ｓｐｅｃｉｆｉｃ　Ｉｎｔｅｇｒａｔｅｄ　Ｃｉｒｃｕｉｔ）、ＦＰＧＡ（Ｆｉｅｌｄ－Ｐｒｏｇｒａｍｍａｂｌｅ　Ｇａｔｅ　Ａｒｒａｙ）、又は、これらを組み合わせたものが該当する。処理回路２０３に入力する情報、及び処理回路２０３から出力する情報は、インタフェース２０４を介して入手することができる。 Also, when realizing the functions of the control unit 7 in Embodiment 1, the configuration shown in FIG. 5 may be used. FIG. 5 is a block diagram showing another example of the hardware configuration for realizing the functions of the controller 7 according to the first embodiment. In FIG. 5, processor 200 and memory 202 shown in FIG. 4 are replaced by processing circuitry 203 . The two thresholds mentioned above are held in the processing circuit 203 . The processing circuit 203 corresponds to a single circuit, a composite circuit, an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a combination thereof. Information to be input to the processing circuit 203 and information to be output from the processing circuit 203 can be obtained via the interface 204 .
　以上説明したように、実施の形態１に係る給電切替回路は、交流電源である外部電源とアクチュエータとの間に配置され、アクチュエータへの給電を外部電源と内部電源との間で切り替える。給電切替回路は、制御部を有する制御回路と、電圧検知部と、第１の遮断部と、切替部とを備える。制御部は、内部電源による電圧が常時印加され、アクチュエータの動作を制御する。電圧検知部は、外部電源が出力する交流電圧の電圧値を検知する。第１の遮断部は、外部電源と電圧検知部とが接続される接続点と制御回路との間に配置され、制御回路を介してアクチュエータに印加される交流電圧のアクチュエータへの給電を遮断する。切替部は、第１の遮断部が開動作したときに内部電源から出力される電圧が制御回路に印加されるように閉動作する。これにより、アクチュエータへの給電が外部電源から内部電源に切り替わった場合でも、空気調和機による空調運転を停止せずに給電の切り替えを行うことができる。また、外部電源から内部電源への給電の切り替えは、外部信号に頼ることなく、空気調和機によって自己完結することができる。 As described above, the power supply switching circuit according to Embodiment 1 is arranged between the external power supply, which is an AC power supply, and the actuator, and switches the power supply to the actuator between the external power supply and the internal power supply. The power supply switching circuit includes a control circuit having a control section, a voltage detection section, a first cutoff section, and a switching section. The control unit is constantly applied with a voltage from an internal power source and controls the operation of the actuator. The voltage detection unit detects the voltage value of the AC voltage output by the external power supply. The first cutoff unit is arranged between the connection point where the external power supply and the voltage detection unit are connected and the control circuit, and cuts off the power supply to the actuator of the AC voltage applied to the actuator via the control circuit. . The switching section closes so that the voltage output from the internal power supply is applied to the control circuit when the first cutoff section opens. Accordingly, even when the power supply to the actuator is switched from the external power supply to the internal power supply, the power supply can be switched without stopping the air conditioning operation of the air conditioner. Also, the switching of power supply from the external power supply to the internal power supply can be self-contained by the air conditioner without depending on an external signal.
　上記の構成において、電圧検知部が異電圧を検出した場合、第１の遮断部は開動作し、切替部は閉動作する。第１の遮断部及び切替部の動作は、内部電源による電圧が常時印加される制御部によって制御される。これにより、アクチュエータに対する外部電源から内部電源への切り替えを、空気調和機による空調運転を停止することなく、円滑且つ確実に実施することができる。 In the above configuration, when the voltage detection section detects a different voltage, the first cutoff section opens and the switching section closes. The operations of the first cutoff section and the switching section are controlled by the control section to which the voltage from the internal power supply is constantly applied. As a result, switching from the external power supply to the internal power supply for the actuator can be smoothly and reliably performed without stopping the air conditioning operation of the air conditioner.
　また、実施の形態１に係る空気調和機は、アクチュエータと、内部電源と、アクチュエータへの給電を交流電源である外部電源と内部電源との間で切り替える給電切替回路とを備える。給電切替回路は、制御部を有する制御回路と、電圧検知部と、第１の遮断部と、切替部とを備える。制御部は、内部電源による電圧が常時印加され、アクチュエータの動作を制御する。電圧検知部は、外部電源が出力する交流電圧の電圧値を検知する。第１の遮断部は、外部電源と電圧検知部とが接続される接続点と制御回路との間に配置され、制御回路を介してアクチュエータに印加される交流電圧のアクチュエータへの給電を遮断する。切替部は、第１の遮断部が開動作したときに内部電源から出力される電圧が制御回路に印加されるように閉動作する。これにより、アクチュエータへの給電が外部電源から内部電源に切り替わった場合でも、空気調和機による空調運転を停止せずに給電の切り替えを行うことができる。また、外部電源から内部電源への給電の切り替えは、外部信号に頼ることなく、空気調和機によって自己完結することができる。 Further, the air conditioner according to Embodiment 1 includes an actuator, an internal power supply, and a power supply switching circuit that switches power supply to the actuator between an external power supply that is an AC power supply and an internal power supply. The power supply switching circuit includes a control circuit having a control section, a voltage detection section, a first cutoff section, and a switching section. The control unit is constantly applied with a voltage from an internal power source and controls the operation of the actuator. The voltage detection unit detects the voltage value of the AC voltage output by the external power supply. The first cutoff unit is arranged between the connection point where the external power supply and the voltage detection unit are connected and the control circuit, and cuts off the power supply to the actuator of the AC voltage applied to the actuator via the control circuit. . The switching section closes so that the voltage output from the internal power supply is applied to the control circuit when the first cutoff section opens. Accordingly, even when the power supply to the actuator is switched from the external power supply to the internal power supply, the power supply can be switched without stopping the air conditioning operation of the air conditioner. Also, the switching of power supply from the external power supply to the internal power supply can be self-contained by the air conditioner without depending on an external signal.
　また、実施の形態１に係る空気調和機において、内部電源は、第１の遮断部と制御回路とが電気的に接続されているときは、外部電源によるアクチュエータへの給電と、外部電源による内部電源への充電とが同時に実施されるように給電切替回路に接続されている。これにより、特別な充電動作を行うことなく、内部電源を動作可能な状態にしておくことができる。 Further, in the air conditioner according to Embodiment 1, when the first cutoff unit and the control circuit are electrically connected, the internal power supply supplies power to the actuator by the external power supply and the internal It is connected to the power supply switching circuit so that charging to the power supply is performed at the same time. Thereby, the internal power supply can be kept in an operable state without performing a special charging operation.
実施の形態２．
　図６は、実施の形態２に係る空気調和機１００Ａの構成例を示す図である。図６において、実施の形態２に係る空気調和機１００Ａでは、図１に示す実施の形態１に係る空気調和機１００の構成において、給電切替回路５０が給電切替回路５０Ａに置き替えられている。給電切替回路５０Ａでは、図１の構成において、更に遮断部６が追加されている。遮断部６は、図示しない開閉接点を有する。遮断部６の開閉動作は、制御部７によって制御される。遮断部６は、交流電源２０と電圧検知部１との間を繋ぐもう一方の電気配線９に配置されている。具体的に、遮断部６は、交流電源２０と電圧検知部１とが接続されるもう一方の接続点１３と、制御回路２との間に配置されている。その他の構成については、図１と同一又は同等であり、同一又は同等の構成部には同一の符号を付して、重複する説明は省略する。なお、本稿では、遮断部６を「第２の遮断部」と記載することがある。 Embodiment 2.
FIG. 6 is a diagram showing a configuration example of an air conditioner 100A according to Embodiment 2. As shown in FIG. 6, in air conditioner 100A according to Embodiment 2, power supply switching circuit 50 in the configuration of air conditioner 100 according to Embodiment 1 shown in FIG. 1 is replaced with power supply switching circuit 50A. In the power supply switching circuit 50A, a cutoff unit 6 is added to the configuration of FIG. The breaker 6 has a switching contact (not shown). The opening/closing operation of the cutoff section 6 is controlled by the control section 7 . The cutoff unit 6 is arranged on the other electrical wiring 9 that connects the AC power supply 20 and the voltage detection unit 1 . Specifically, the cutoff unit 6 is arranged between the control circuit 2 and the other connection point 13 where the AC power supply 20 and the voltage detection unit 1 are connected. Other configurations are the same as or equivalent to those in FIG. 1, and the same or equivalent components are denoted by the same reference numerals, and duplicate descriptions are omitted. In this paper, the blocking section 6 may be referred to as a "second blocking section".
　遮断部６は、給電切替回路５０Ａの動作を確実に実施するために設けられている。このため、遮断部６は、遮断部４と同様に制御される。従って、遮断部４が閉動作するときは、遮断部６も閉動作し、遮断部４が開動作するときは、遮断部６も開動作する。 The cutoff unit 6 is provided to ensure the operation of the power supply switching circuit 50A. Therefore, the blocking section 6 is controlled in the same manner as the blocking section 4 . Therefore, when the breaking section 4 closes, the breaking section 6 also closes, and when the breaking section 4 opens, the breaking section 6 also opens.
　上記のように構成された給電切替回路５０Ａによれば、遮断部４，６の何れか１つの接点が短絡故障した場合でも、短絡故障していないもう一方の遮断部によって、交流電源２０からの給電を行う回路部が確実に遮断される。これにより、遮断部４，６以外の回路要素への波及故障を防止して、給電切替回路５０Ａの保護を確実に実施することができる。 According to the power supply switching circuit 50A configured as described above, even if one of the contacts of the breakers 4 and 6 has a short-circuit fault, the other breaker that is not short-circuited will switch the power supply from the AC power supply 20. The circuit section that supplies power is reliably cut off. As a result, it is possible to prevent a failure from spreading to circuit elements other than the cutoff units 4 and 6, and to reliably protect the power supply switching circuit 50A.
　以上説明したように、実施の形態２に係る給電切替回路は、外部電源と制御回路とを電気的に接続するためのもう一方の電気配線に配置され、第１の遮断部と同一の動作をする第２の遮断部を更に備える。これにより、第１及び第２の遮断部以外の回路要素への波及故障を防止して、給電切替回路の保護を確実に実施することができる。 As described above, the power supply switching circuit according to the second embodiment is arranged on the other electrical wiring for electrically connecting the external power source and the control circuit, and performs the same operation as the first cutoff unit. It further comprises a second blocking part for As a result, it is possible to prevent a failure from spreading to circuit elements other than the first and second cutoff units, and to reliably protect the power supply switching circuit.
　以上の実施の形態に示した構成は、一例を示すものであり、別の公知の技術と組み合わせることも可能であるし、要旨を逸脱しない範囲で、構成の一部を省略、変更することも可能である。 The configuration shown in the above embodiment is an example, and can be combined with another known technique, and part of the configuration can be omitted or changed without departing from the scope of the invention. It is possible.
　１　電圧検知部、２　制御回路、３　バッテリ、４，６　遮断部、５　切替部、７　制御部、８，９　電気配線、１２，１３　接続点、２０　交流電源、２２　アクチュエータ、５０，５０Ａ　給電切替回路、１００，１００Ａ　空気調和機、２００　プロセッサ、２０２　メモリ、２０３　処理回路、２０４　インタフェース。 1 Voltage detection unit, 2 control circuit, 3 battery, 4, 6 cutoff unit, 5 switching unit, 7 control unit, 8, 9 electrical wiring, 12, 13 connection point, 20 AC power supply, 22 actuator, 50, 50A power supply switching Circuit, 100, 100A air conditioner, 200 processor, 202 memory, 203 processing circuit, 204 interface.

Claims (6)

  1. 　交流電源である外部電源とアクチュエータとの間に配置され、前記アクチュエータへの給電を前記外部電源と内部電源との間で切り替える給電切替回路であって、
    　前記給電切替回路は、
    　内部電源による電圧が常時印加され、前記アクチュエータの動作を制御する制御部を有する制御回路と、
    　前記外部電源が出力する交流電圧の電圧値を検知する電圧検知部と、
    　前記外部電源と前記電圧検知部とが接続される接続点と前記制御回路との間に配置され、前記制御回路を介して前記アクチュエータに印加される前記交流電圧の前記アクチュエータへの給電を遮断する第１の遮断部と、
    　前記第１の遮断部が開動作したときに前記内部電源から出力される電圧が前記制御回路に印加されるように閉動作する切替部と、
    　を備える給電切替回路。     A power supply switching circuit disposed between an external power supply, which is an AC power supply, and an actuator, for switching power supply to the actuator between the external power supply and an internal power supply,
    The power supply switching circuit is
    a control circuit to which a voltage from an internal power source is constantly applied and which has a control unit for controlling the operation of the actuator;
    a voltage detection unit that detects the voltage value of the AC voltage output by the external power supply;
    a connection point between the external power supply and the voltage detection unit and the control circuit, and cuts off power supply to the actuator of the AC voltage applied to the actuator via the control circuit; a first blocking unit;
    a switching unit that closes so that the voltage output from the internal power supply is applied to the control circuit when the first cutoff unit opens;
    A power supply switching circuit.
  2. 　前記電圧検知部が異電圧を検出した場合、前記第１の遮断部は開動作し、前記切替部は閉動作する
    　請求項１に記載の給電切替回路。     2. The power supply switching circuit according to claim 1, wherein when the voltage detection unit detects a different voltage, the first cutoff unit opens and the switching unit closes.
  3. 　前記第１の遮断部及び前記切替部の動作は、前記制御部によって制御される
    　請求項１又は２に記載の給電切替回路。     The power supply switching circuit according to claim 1 or 2, wherein the operations of the first cutoff section and the switching section are controlled by the control section.
  4. 　前記給電切替回路は、前記外部電源と前記制御回路とを電気的に接続するためのもう一方の電気配線に配置され、前記第１の遮断部と同一の動作をする第２の遮断部を更に備える
    　請求項１に記載の給電切替回路。     The power supply switching circuit further includes a second cutoff unit arranged on the other electrical wiring for electrically connecting the external power supply and the control circuit and performing the same operation as the first cutoff unit. The power supply switching circuit according to claim 1.
  5. 　アクチュエータと、内部電源と、前記アクチュエータへの給電を交流電源である外部電源と前記内部電源との間で切り替える給電切替回路とを備える空気調和機であって、
    　前記給電切替回路は、
    　内部電源による電圧が常時印加され、前記アクチュエータの動作を制御する制御部を有する制御回路と、
    　前記外部電源が出力する交流電圧の電圧値を検知する電圧検知部と、
    　前記外部電源と前記電圧検知部とが接続される接続点と、前記制御回路との間に配置され、前記制御回路を介して前記アクチュエータに印加される前記交流電圧の前記アクチュエータへの給電を遮断する第１の遮断部と、
    　前記第１の遮断部が開動作したときに前記内部電源から出力される電圧が前記制御回路に印加されるように閉動作する切替部と、
    　を備える空気調和機。     An air conditioner comprising an actuator, an internal power supply, and a power supply switching circuit that switches power supply to the actuator between an external power supply that is an AC power supply and the internal power supply,
    The power supply switching circuit is
    a control circuit to which a voltage from an internal power source is constantly applied and which has a control unit for controlling the operation of the actuator;
    a voltage detection unit that detects the voltage value of the AC voltage output by the external power supply;
    a connection point between the external power supply and the voltage detection unit and the control circuit, and cuts off power supply of the AC voltage applied to the actuator to the actuator via the control circuit; a first blocking unit that
    a switching unit that closes so that the voltage output from the internal power supply is applied to the control circuit when the first cutoff unit opens;
    air conditioner.
  6. 　前記内部電源は、前記第１の遮断部と前記制御回路とが電気的に接続されているときは、前記外部電源による前記アクチュエータへの給電と、前記外部電源による前記内部電源への充電とが同時に実施されるように前記給電切替回路に接続されている
    　請求項５に記載の空気調和機。     In the internal power source, when the first cutoff section and the control circuit are electrically connected, the external power source supplies power to the actuator and the external power source charges the internal power source. The air conditioner according to claim 5, which is connected to the power supply switching circuit so as to be performed simultaneously.
PCT/JP2022/009167 2022-03-03 2022-03-03 Power supply switching circuit and air conditioner WO2023166670A1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000028176A (en) * 1998-07-09 2000-01-25 Sharp Corp Air conditioner using solar light power generation
JP2008263669A (en) * 2007-04-10 2008-10-30 Sony Corp Electronic equipment, electric equipment, sub-power supply unit, power supply system, and sub-power supply control method
JP2009011081A (en) * 2007-06-28 2009-01-15 Nippon Telegr & Teleph Corp <Ntt> Power supply system
WO2015198447A1 (en) * 2014-06-26 2015-12-30 東芝三菱電機産業システム株式会社 Uninterruptible power supply

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000028176A (en) * 1998-07-09 2000-01-25 Sharp Corp Air conditioner using solar light power generation
JP2008263669A (en) * 2007-04-10 2008-10-30 Sony Corp Electronic equipment, electric equipment, sub-power supply unit, power supply system, and sub-power supply control method
JP2009011081A (en) * 2007-06-28 2009-01-15 Nippon Telegr & Teleph Corp <Ntt> Power supply system
WO2015198447A1 (en) * 2014-06-26 2015-12-30 東芝三菱電機産業システム株式会社 Uninterruptible power supply

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