CN110892625A - Household appliance - Google Patents
Household appliance Download PDFInfo
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- CN110892625A CN110892625A CN201880011783.XA CN201880011783A CN110892625A CN 110892625 A CN110892625 A CN 110892625A CN 201880011783 A CN201880011783 A CN 201880011783A CN 110892625 A CN110892625 A CN 110892625A
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- Prior art keywords
- power supply
- unit
- power
- interface control
- switch
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Power Engineering (AREA)
- Inverter Devices (AREA)
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Abstract
A power supply circuit (15) receives AC power input via a power plug (101) and generates an internal power supply. The interface control unit (30) is connected to the operation unit (32) and operates in response to an internal power supply. The interface control unit (30) provides an operation command to the actuator drive unit (17) based on the operation received by the operation unit (32). A power supply detection unit (18) detects whether or not AC power is input to the power supply circuit unit (15). As shown in step S110, if the first microcomputer (30a) detects in step S101 that the ac power is not input by the power supply detection unit (18), even if the internal power supply is supplied from the power supply circuit unit (15) to the interface control unit (30) due to the residual charge of the first smoothing capacitor (C1), the predetermined "stop processing" is executed.
Description
Technical Field
The present invention relates to a home appliance.
Background
Conventionally, as disclosed in, for example, japanese patent application laid-open No. 2006-246666, there is known an air conditioner that releases a residual voltage in a short time when an outlet is powered off. In this air conditioner, the residual voltage of the capacitor is discharged when the outlet is pulled out for safety purposes.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open No. 2006 and 246666
Disclosure of Invention
Problems to be solved by the invention
Home appliances such as air conditioners and dehumidifiers are provided with a power supply circuit, an actuator driving unit, and a display operation device. The power supply circuit is connected to the power plug to generate power. The actuator performs desired functions such as air conditioning and dehumidification. The actuator driving unit includes a driving circuit. The display operation device handles the operation and display of the device.
The smoothing capacitor is mostly included in at least one of the power supply circuit and the drive circuit. When the power plug is pulled out and the supply of the ac power is terminated, the smoothing capacitor has residual charge. Due to the effect of recent reduction in power consumption, a poor period in which the power supply of the display operation device continues to be turned on due to the residual voltage of the smoothing capacitor even if the power plug is pulled out may occur.
The residual voltage of the smoothing capacitor cannot compensate for such a large electric power as to drive the actuator in the normal operation. In this bad period, although the display operation device is operating, a desired actuator action cannot be achieved even if an operation is input to the display operation device. This defective period is temporary, and when the residual charge of the smoothing capacitor is reduced, it is eliminated and the state is the same as the normal power OFF (OFF). Thus, it is not desirable to treat the bad period as an abnormal occurrence such as a device failure.
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a home appliance improved so as to prevent unnecessary handling of an appliance operation as an abnormality when power supply of ac power is stopped.
Means for solving the problems
The home appliance of the present invention includes:
a power supply circuit unit that receives AC power and generates an internal power supply;
an interface control unit connected to the operation unit, operated by receiving the internal power supply, and configured to supply an operation command to the actuator driving unit based on the operation received by the operation unit; and
a power supply detection unit that detects whether or not the AC power is input to the power supply circuit unit,
if the power supply detection unit detects that the ac power is not input, the interface control unit is caused to execute a predetermined stop process even if the internal power supply from the power supply circuit unit is supplied.
ADVANTAGEOUS EFFECTS OF INVENTION
When the supply of the ac power is terminated, the interface control unit can be caused to execute the stop process even if the interface control unit continues to receive the supply of the power due to the residual charge of the capacitor in the power supply circuit unit. This can prevent the device operation from being unnecessarily treated as an abnormality when the supply of the ac power is stopped.
Drawings
Fig. 1 is a sectional view of a home appliance according to an embodiment of the present invention.
Fig. 2 is an exploded perspective view of a home appliance according to an embodiment of the present invention.
Fig. 3 is a circuit block diagram of a home appliance according to an embodiment of the present invention.
Fig. 4 is a flowchart for explaining an operation of the home appliance according to the embodiment of the present invention.
Fig. 5 is a circuit diagram of a power synchronization detection unit of a home appliance according to an embodiment of the present invention.
Fig. 6 is an example of a hardware configuration diagram of the interface control unit.
(description of reference numerals)
1: a center housing; 2: a front housing; 3: a rear housing; 4: an outlet port; 5: a blower; 6: a dehumidifying device; 6 a: a compressor; 6 b: a condenser; 6 c: a pressure reducing device; 6 d: an evaporator; 7: a display operation device; 7 a: a main power switch; 8: a water storage tank; 9: a suction inlet; 10: a control device; 11: a discharge port louver drive motor; 12: a sensor; 13: an alternating current power supply; 15: a power supply circuit section; 16: a power supply switch; 17: an actuator driving section; 17 a: a drive circuit; 17 b: a second microcomputer; 18: a power source detection section; 19: a power supply synchronization detection section; 20: a detection part switch; 30: an interface control section; 30 a: a first microcomputer; 31: a display unit; 32: an operation section; 32 a: an operation switch; 41: wiring (signal wiring); 42: wiring (power supply wiring); 43: wiring (control wiring); 44: wiring (communication wiring); 45: wiring (synchronization signal wiring); 50: dedicated hardware; 51: a processor; 52: a memory; 100: a home appliance device; 101: a power plug; 141: a first resistance (third resistance); 142: a diode; 143: an optical coupler; 144: a second resistor; c1: a first smoothing capacitor; c2: a second smoothing capacitor.
Detailed Description
Fig. 1 is a sectional view of a home appliance according to an embodiment of the present invention. Fig. 2 is an exploded perspective view of a home appliance according to an embodiment of the present invention.
The home appliance 100 according to the embodiment is a dehumidifier, and more specifically, a dehumidifier of a movable inverter-driven compressor type. The left side of the sheet of fig. 1 is the "front" of the home appliance 100, and the right side of the sheet of fig. 1 is the "rear" of the home appliance 100. The housing of the household appliance 100 includes a center housing 1, a front housing 2, and a rear housing 3. The center housing 1 is provided in the center of the home appliance 100. The center housing 1 is capable of standing alone. The front housing 2 is provided on the front side of the center housing 1 and is detachably provided to the center housing 1. The rear case 3 is provided on the rear side of the center case 1 and is detachably provided to the center case 1.
The discharge port 4 is formed in the upper portion of the center housing 1. The blower 5 is provided in the center of the center case 1 in the front-rear direction of the center case 1. For example, the blower 5 includes a blower fan and a motor. The rotation axis of the blower 5 is parallel to the longitudinal axis of the home appliance 100 in the center of the center housing 1. The rotation axis of the blower 5 is oriented in the horizontal direction. The dehumidifier 6 is provided on the rear side of the center case 1. The dehumidifying device 6 includes a compressor 6a, a condenser 6b, a pressure reducing device 6c, and an evaporator 6 d. Although not shown in fig. 1 and 2, a humidity detection sensor 12 (see fig. 3) is provided on one side surface of the center case 1 at a lower portion of the center case 1.
The front housing 2 includes a display operation device 7 and a water tank 8. The display operation device 7 is provided on the upper portion of the front case 2. Although not shown in fig. 1 and 2, the display operation device 7 includes an operation unit 32 (see fig. 3) and a display unit 31 (see fig. 3). The water tank 8 is provided at the lower portion of the front housing 2. In a state where the front housing 2 is attached to the center housing 1, the water tank 8 can be detached from the front side of the household electrical appliance 100.
The rear housing 3 includes a suction port 9. The suction port 9 is provided at an upper portion of the rear case 3.
The home appliance 100 includes a display operation device 7 and a control device 10. The control device 10 is provided in front of the center case 1. The control device 10 controls the operation of the blower 5 based on the operation state of the operation unit 32 of the display operation device 7 and the humidity detected by the humidity detection sensor 12. The motor of the blower 5 rotates at a rotation speed according to the control of the control device 10. As a result, the indoor air a is sucked into the housing through the suction port 9 in the horizontal direction. After that, the air a passes through the evaporator 6 d. Then, the blower 5 discharges the air B into the room from the discharge port 4 upward.
The controller 10 controls the operation of the compressor 6a based on the operation state of the operation unit 32 of the display operation device 7 and the humidity detected by the humidity detection sensor 12. The compressor 6a compresses the refrigerant at a frequency specified by the control of the control device 10. The condenser 6b cools the refrigerant compressed by the compressor 6 a. The pressure reducing device 6c reduces the pressure of the refrigerant cooled by the condenser 6 b. The evaporator 6d removes moisture contained in the air a by absorbing heat of the refrigerant decompressed by the decompression device 6 c. As a result, the dehumidified air B is generated. The moisture removed from the air a is stored in the water storage tank 8.
Fig. 3 is a circuit block diagram of a home appliance according to an embodiment of the present invention. The display operation device 7 includes a main power switch 7a, a display unit 31, an operation unit 32, and an interface control unit 30. The display unit 31 includes an LED, a liquid crystal, or the like. The operation unit 32 may include a mechanical switch such as a button provided around the display unit 31, or may be implemented by configuring at least a part of the display unit 31 with a touch panel. The operation unit 32 includes an operation switch 32 a. The interface control unit 30 is configured centering on the first microcomputer 30 a. The first microcomputer 30a executes display processing of an LED, a liquid crystal, or the like and operation processing for receiving an operation such as a switch.
The control device 10 includes: a power supply circuit unit 15; an actuator driving section 17; a power supply switch 16 which is located between the power supply circuit unit 15 and the actuator driving unit 17 and which transmits the power generated by the power supply circuit unit 15 to the actuator driving unit 17 when turned on; a power source detection section 18; a power supply synchronization detection unit 19; and a detection switch 20 for turning on or off the electrical connection between the power plug 101 and the power synchronization detection unit 19. The power supply circuit unit 15 includes a first smoothing capacitor C1 that accumulates electric charge when the internal power supply is generated. The actuator driving section 17 includes a driving circuit 17 a. The drive circuit 17a includes a second smoothing capacitor C2.
The actuator driving unit 17 is connected to the compressor 6a, the blower 5, and the discharge port louver driving motor 11, and controls operations of these components. The actuator driving unit 17 includes a driving circuit 17a for realizing such control, and the driving circuit 17a includes a second microcomputer 17 b. The compressor 6a compresses the refrigerant while checking the state of the air by the humidity detection sensor 12. The discharge port louver driving motor 11 changes the blowing direction of the discharge port 4. The power circuit unit 15 receives power from the ac power supply 13 and generates a dc internal power supply necessary for control. The power source detection section 18 detects that the ac power source 13 is being reliably supplied with power. When the power plug 101 is pulled out, the power detection section 18 can detect the pulling-out. The power supply synchronization detection section 19 detects a zero crossing of the ac power supply 13.
One of the purposes of the power synchronization detecting section 19 is to determine the frequency of the input ac power supply 13. Another purpose of the power supply synchronization detecting section 19 is to use by counting the number of zero crossings instead of a timer. Still another object of the power supply synchronization detecting section 19 is to measure a predetermined time until the next zero-crossing with the zero-crossing point as a base point. The measurement time is used to determine the control timing of the actuator or to control the power supply circuit unit 15 as needed.
The home device 100 has a "standby mode". The standby mode is as follows: although the power of the home appliance 100 is turned on by turning on the main power switch 7a, the actuator such as the compressor 6a is not yet driven. The standby mode is executed when the conditions that the power of the home appliance 100 is turned on and the operation switch 32a of the operation unit 32 is not turned on are satisfied. For example, the standby mode is set during a period from immediately after the power supply of the home appliance 100 is turned on to when the operation switch 32a for starting dehumidification is actually turned on. For example, when the operation switch 32a is turned on temporarily after the power of the home appliance 100 is turned on, and then the operation switch 32a is turned off, the standby mode is also executed. For example, after the power of the home appliance 100 is turned on and the operation switch 32a is turned on, dehumidification may be performed for a predetermined time set by a timer, and after dehumidification is automatically switched to stop, the standby mode may be executed.
During the execution of the "standby mode", the actuator driving unit 17 is turned off by turning off the power unit switch 16. As a result, standby power is reduced. Since the power supply synchronization detecting section 19 needs to accurately detect the zero cross point, the power supply synchronization detecting section 19 is a low impedance circuit that is not easily affected by interference. Therefore, the power consumption of the power synchronization detecting section 19 is large. During the standby mode, the power synchronization detector 19 is disconnected from the ac power supply 13 by turning off the detector switch 20. This can reduce standby power.
The display operation device 7 and the control device 10 are connected by wiring 41 to 45. More specifically, the wirings 41 to 45 are a signal wiring 41, a power supply wiring 42, a control wiring 43, a communication wiring 44, and a synchronization signal wiring 45.
The signal wiring 41 transmits a detection signal of the power supply detection unit 18, which outputs the presence or absence of power supply from the ac power supply 13, from the control device 10 to the display operation device 7. The signal wiring 41 directly connects the power source detection unit 18 and the interface control unit 30 without interposing another circuit.
The signal wiring 41 can transmit a detection signal indicating that ac power is not input to the interface control unit 30 in a very short time. If it is detected by the power supply detection section 18 that no ac power is input, it is preferable to set the interface control section 30 to the stopped state at a timing sufficiently earlier than the voltage of the first smoothing capacitor C1 is lower than the operating voltage of the interface control section 30. If the power supply detection unit 18 detects that ac power is not input, it is preferable to transmit a detection signal to the interface control unit 30 within a sufficiently short time such as within several tens of msec. Specifically, it is preferably within several tens of msec, more specifically, 10msec to 90msec, and as short a time as possible.
The power supply wiring 42 supplies the dc power generated by the power supply circuit unit 15 to the display operation device 7. The control wiring 43 transmits an on/off command to the power section switch 16 and the detection section switch 20 from the display operation device 7. The communication wiring 44 is bidirectional wiring for exchanging information between the interface control unit 30 and the actuator driving unit 17. The communication wiring 44 transmits an actuator operation instruction to the actuator driving unit 17 based on the operation information of the interface control unit 30. Here, at least the compressor 6a, the blower 5, and the discharge port louver drive motor 11 are referred to as "actuators". The communication wiring 44 transmits information such as monitoring of the operating state and abnormality of each actuator from the actuator driving unit 17 to the interface control unit 30. The synchronization signal wiring 45 transmits a power supply synchronization signal, which is an output signal of the power supply synchronization detection unit 19, to the actuator driving unit 17.
The operation of the power source detection unit 18 will be described in detail. If there is power supplied from the ac power supply 13, there is dc power supplied from the power supply circuit unit 15 to the display operation device 7, and therefore the display operation device 7 is constantly operated. Since it can be considered that the display operation device 7 is operating and that the power is supplied from the ac power supply 13, it appears that the power supply detection unit 18 does not need to be provided. However, the power supply circuit unit 15 includes the large first smoothing capacitor C1 because inverter control is required. In the embodiment, when the actuator is stopped, the power supply switch 16 and the detection switch 20 are turned off so that an unnecessary current does not flow. As a result, the power supply to the display operation device 7 is continued for a short period after the ac power supply 13 is turned off due to the residual voltage of the first smoothing capacitor C1.
When detecting that the ac power from the ac power supply 13 has disappeared, the power supply detection unit 18 transmits a detection signal to the first microcomputer 30a of the interface control unit 30. The detection signal is transmitted via the signal wiring 41 in a very short time. When the interface control unit 30 receives a detection signal indicating that the ac power from the ac power supply 13 has disappeared, a predetermined "stop process" is executed.
As a specific example of the stop processing, processing at the time of power failure can be performed, and for example, at least the following first to fourth examples are cited. As a first example, the stop processing may include "operation prohibition processing". The operation prohibition processing is processing in which the interface control unit 30 does not accept the operation of the operation unit 32.
In an embodiment, the interface control section 30 includes a display section 31 for providing an image to a user. In this case, as a second example, the stop processing may include any one of display stop processing of the display unit 31, predetermined "display processing of an operation stop image" for the display unit 31, and predetermined "display processing of an alarm screen at the time of plug-out occurrence" for the display unit 31.
As a third example, the stop process may also include a "light-off process". The light-off process is a process of turning off the device power supply lamp when the interface control unit 30 includes the device power supply lamp.
In the embodiment, a communication line 44 for communicating the presence or absence of an abnormality is provided between the actuator driving unit 17 and the interface control unit 30. In the embodiment, a notification unit, which is the display unit 31 in the embodiment, for notifying a user of an alarm is provided. In this case, as a fourth example, the stop processing may also include "alarm stop processing". The alarm stop processing is processing for causing the notification unit not to notify an abnormal alarm indicating that the operation received by the operation unit 32 has not been performed by the actuator driving unit 17.
By quickly executing the stop processing, it is possible to avoid an error from occurring when the actuator is intended to be operated despite the ac power supply 13 being turned off.
When ac power is being supplied from the ac power supply 13, the power supply detection unit 18 is energized. From the viewpoint of reducing standby power, the power detection unit 18 preferably consumes as little power as possible.
Fig. 4 is a flowchart for explaining the operation of the home appliance 100 according to the embodiment of the present invention. Fig. 4 is a flowchart showing a control program executed by the first microcomputer 30a of the interface control section 30.
When the power plug 101 is connected to the ac power supply 13 and the main power switch 7a is turned on, the first microcomputer 30a is energized. When the first microcomputer 30a is powered on, the routine (routine) of fig. 4 starts.
First, in step S101, it is determined whether or not the connection of the ac power supply 13 is detected by the power supply detection unit 18. If the judgment result of step S101 is YES (Yes), the process proceeds to step S102. In step S102, the initial screen is displayed on the display unit 31, and the operation unit 32 is in a state of accepting an operation. For example, when the home appliance 100 is just powered on, the operation switch 32a is not yet turned on, and thus the actuator such as the compressor 6a is not yet driven. Therefore, at this time, in step S102, the home appliance 100 is in the standby mode.
If the judgment result of step S101 is NO (No), the process proceeds to step S110. In step S110, the aforementioned "stop processing" is performed. In the embodiment, it is assumed that the operation prohibition processing as the first example and the display stop processing of the display unit 31 as one of the second examples are executed in the stop processing. After that, the process advances to step S105.
In step S105, it is determined whether the energization flag has been set to 1. If the energization flag is not 1, the process returns to step S101.
After step S102, the process advances to step S103. In step S103, it is determined whether or not the operation switch 32a included in the operation unit 32 is operated to be turned on. When an on signal indicating that the operation switch 32a is turned on is generated, the process proceeds to step S104.
In step S104, the power supply switch 16 and the detection switch 20 are turned on by the control wiring 43, and the actuator driving unit 17 and the power supply synchronization detection unit 19 are activated. After that, the energization flag is set to 1. Accordingly, a situation having an energized state is stored in the first microcomputer 30 a. In accordance with the operation of the operation unit 32, an operation command is sent to the actuator driving unit 17. After that, the process returns to step S101, and as long as the power supply is detected in step S101 and the operation switch 32a is not turned off, the actuator driving section 17 continues to drive the actuator.
If the running switch 32a is still off in step S103, the process proceeds to step S105.
In step S105, the state of the energization flag is determined. Here, in step S104, the energization flag is set to 1 whenever the actuator driving unit 17 is turned on once. In this case, the process advances to step S106.
In step S106, it is determined whether or not the 10-second timer is operating. If the 10-second timer is not active, the process proceeds to step S109, and the 10-second timer is started. If the 10-second timer is operating, the process proceeds to step S107, where it is determined whether or not the 10-second timer indicates that 10 seconds have elapsed. If 10 seconds have not elapsed in step S107, the process returns to step S101, and waits for 10 seconds to elapse while repeating step S107 a plurality of times by looping the program.
If 10 seconds have elapsed in step S107, the process proceeds to step S108. In step S108, the power section switch 16 and the detection section switch 20 are turned off by the control wiring 43, and the actuator driving section 17 and the power synchronization detection section 19 stop operating. Further, the power-on flag is set to 0, and the 10-second timer is reset. After that, the process returns to step S101.
As described above, the home appliance 100 according to the embodiment includes the power supply circuit unit 15, the interface control unit 30, and the power supply detection unit 18. The power supply circuit unit 15 receives ac power input via the power plug 101 to generate an internal power supply. The interface control unit 30 is connected to the operation unit 32, and operates upon receiving an internal power supply. The interface control unit 30 supplies an operation command to the actuator driving unit 17 based on the operation received by the operation unit 32. The power source detection unit 18 detects whether or not ac power is being input to the power source circuit unit 15. As shown in step S110, if the first microcomputer 30a detects in step S101 that the ac power is not being input by the power supply detection section 18, the predetermined "stop process" is executed even if the internal power is being supplied from the power supply circuit section 15 to the interface control section 30 due to the residual charge of the first smoothing capacitor C1.
After detecting the ac power supply 13 in step S101, the home appliance 100 enters the standby mode in step S102, detects the turning on of the operation switch 32a in step S103, and operates as usual in step S104. At this time, when the power plug 101 is pulled out and the supply of the ac power is terminated, the power supply is detected as no in step S101. At this time, according to the embodiment, even if the interface control unit 30 continues to receive the supply of electric power due to the electric charge of the first smoothing capacitor C1 remaining in the power supply circuit unit 15, the interface control unit 30 can execute the stop process in step S110. Accordingly, since it is possible to suppress occurrence of a situation in which the interface control unit 30 is not operated by the actuator driving unit after the power plug 101 is pulled out, it is possible to suppress unnecessary handling of the device operation as an abnormality when the power supply of the ac power is stopped.
In the flowchart of fig. 4, the process returns to step S101 after one round. Therefore, when the power supply is not detected in step S101, the stop process is executed as soon as possible in step S110, and the interface control unit 30 enters the same state as that in the non-energization state.
According to steps S106, S107, and S109, if the power supply switch 16 is turned from off to on, the power supply switch 16 is kept on until 10 seconds, which is a predetermined time, elapses. The reason for setting the 10-second timer is as follows. In the case where the on and off operations are repeated frequently by the operation switch 32a, the energization and non-energization to the actuator driving portion 17 are repeated by the on and off of the power supply portion switch 16. The second microcomputer 17b of the actuator driving section 17 executes initial processing of startup after the start of energization. When the energization and non-energization to the actuator driving section 17 are repeated, the second microcomputer 17b repeats the initial processing a plurality of times. Such repetition of the initial process may destabilize the operation of the home appliance 100. Then, by ensuring that the power supply section switch 16 is turned on for a time period of 10 seconds once it is energized, repetition of the initial processing can be prevented. The time is not limited to 10 seconds, and may be set to be longer or shorter than 10 seconds.
The home appliance 100 according to the above-described embodiment is configured to turn off the power switch 16 and the detection switch 20 during the execution of the standby mode in step S102. Accordingly, the actuator driving unit 17 and the power synchronization detecting unit 19 are stopped, and power consumption is suppressed. The relationship between the capacitance of the first smoothing capacitor C1 provided in the power supply circuit unit 15 and the power consumption in the standby mode differs according to design. For example, by sufficiently suppressing the power consumption, the amount of charge when the first smoothing capacitor C1 is fully charged may be an amount to the extent that the power consumption in the standby mode is supplemented with sufficient time. The sufficient time is, for example, 1 minute or more. In this case, after the process of step S102 → step S103 → step S105, when the power plug 101 is pulled out, the screen display state of the display unit 31 in the standby mode may continue for a long time, such as 1 minute or more. In this regard, in the embodiment, the process proceeds to step S110, and the interface control unit 30 can be promptly caused to execute the stop process. Thus, both power consumption suppression and suppression of unnecessary abnormality detection can be achieved.
Fig. 5 is a circuit diagram of the power synchronization detecting unit 19 of the home appliance according to the embodiment of the present invention. The power synchronization detecting unit 19 includes a first resistor 141, a second resistor 144, a reverse voltage blocking diode 142, and a photocoupler 143.
One end of the first resistor 141 receives ac power from the ac power supply 13. An anode of the diode 142 is connected to the other end of the first resistor 141. In the photocoupler 143, a current signal flowing from the cathode of the diode 142 is transmitted to the phototransistor via the light emitting diode. One end of the second resistor 144 is supplied with a control power source, and the other end of the second resistor 144 is connected to the phototransistor of the photo coupler 143. A synchronization signal wiring 45 is connected to a connection point between the other end of the second resistor 144 and the phototransistor of the photocoupler 143. A current signal is output from the synchronization signal wiring 45.
When connected to the ac power supply 13, only half-wave current flows through the first resistor 141, the diode 142, and the light emitting diode of the photocoupler 143. With this half-wave current, the phototransistor of the photocoupler 143 is turned on. When the phototransistor is turned on, the synchronization signal transmitted at the synchronization signal wiring 45 is inverted from a high level to a low level.
The power supply detection unit 18 can also be realized by circuit elements and circuit connections similar to the circuit configuration of the power supply synchronization detection unit 19 shown in fig. 5. In this case, the synchronizing signal wiring 45 of fig. 5 is used as the signal wiring 41 for outputting the detection signal of the power supply detection section 18. In the case where the first resistor 141 is replaced with the "third resistor" and the second resistor 144 is replaced with the "fourth resistor", it is preferable to make the resistance value of the third resistor 141 that can constitute the power supply synchronization detection unit 19 as large as possible in order to reduce power consumption in the standby mode. For example, when the ac power supply 13 is 220V, the resistance value of the third resistor 141 may be set to 30k Ω when the circuit of fig. 5 is used as the power supply synchronization detecting unit 19. When the ac power supply 13 is 220V, the resistance value of the first resistor 141 may be 600k Ω when the circuit of fig. 5 is used as the power supply detection unit 18. When the first resistor 141 is set to 600k Ω, an error signal is likely to occur due to external noise or the like, but the function of the power source detection unit 18 that determines only the presence or absence of the ac power source 13 is sufficiently satisfied.
Fig. 6 is an example of a hardware configuration diagram of the interface control unit 30.
The function of the first microcomputer 30a in the interface control section 30 is realized by a processing circuit. The processing circuitry may also be dedicated hardware 50. The processing circuit may include a processor 51 and a memory 52. The processing circuit may be partially formed as dedicated hardware 50, and further include a processor 51 and a memory 52. Fig. 6 shows an example of a case where a part of the processing circuit is formed as dedicated hardware 50 and includes a processor 51 and a memory 52.
In the case where at least a part of the processing circuit is at least one dedicated hardware 50, the processing circuit corresponds to, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC, an FPGA, or a circuit combining these.
When the processing circuit includes at least one processor 51 and at least one memory 52, each function of the interface control unit 30 is realized by software, firmware, or a combination of software and firmware. The software and firmware are described as programs and stored in the memory 52. The processor 51 reads out and executes the program stored in the memory 52, thereby realizing the functions of each unit. The processor 51 is also called a CPU (Central Processing Unit), a Central Processing Unit, a Processing Unit, an arithmetic Unit, a microprocessor, a microcomputer, or a DSP. The memory 52 corresponds to a nonvolatile or volatile semiconductor memory such as a RAM, a ROM, a flash memory, an EPROM, and an EEPROM.
In this manner, the processing circuit can realize each function of the interface control section 30 by hardware, software, firmware, or a combination of these. The functions of the actuator driving unit 17 can be realized by a processing circuit similar to the processing circuit shown in fig. 6.
Claims (11)
1. A home appliance is provided with:
a power supply circuit unit that receives AC power and generates an internal power supply;
an interface control unit connected to the operation unit, operated by receiving the internal power supply, and configured to supply an operation command to the actuator driving unit based on the operation received by the operation unit; and
a power supply detection unit that detects whether or not the AC power is input to the power supply circuit unit,
if the power supply detection unit detects that the ac power is not input, the interface control unit is caused to execute a predetermined stop process even if the internal power supply from the power supply circuit unit is supplied.
2. The home device of claim 1,
the power supply device further includes a signal wiring line that directly connects the power supply detection unit and the interface control unit without intervening another circuit and transmits a signal indicating that the ac power is not input to the interface control unit.
3. The home appliance according to claim 1, comprising:
an actuator driven by the actuator driving section; and
a power supply switch which is present between the actuator driving unit and the power supply circuit unit and transmits the internal power generated by the power supply circuit unit to the actuator driving unit when the power supply switch is turned on,
the power unit switch is turned off during execution of a standby mode in which the power of the home appliance is turned on and the actuator is stopped.
4. The home device of claim 3,
the home appliance is a portable appliance including a housing that accommodates the power circuit unit, the interface control unit, the power detection unit, the actuator, and the power switch.
5. The home appliance according to claim 3 or 4, comprising:
a power plug connected to an ac power supply that supplies the ac power;
a power supply synchronization detection unit that detects a zero crossing of the alternating-current power; and
a detection part switch for connecting and disconnecting the electrical connection between the power plug and the power synchronization detection part,
the detection unit switch is turned off during the execution of the standby mode.
6. The home device of claim 1,
further comprises a power supply synchronization detection unit for detecting a zero crossing of the AC power,
the power source detection unit includes:
a first resistor having one end receiving the ac power;
the anode of the first diode is connected to the other end of the first resistor;
a first optocoupler communicating a first current signal flowing from the cathode of the first diode; and
a second resistor, one end of which receives a control power supply and the other end of which is connected with the first optical coupler,
outputting the first current signal from between the other end and the first optocoupler,
the power synchronization detection unit includes:
a third resistor having one end receiving the ac power;
the anode of the second diode is connected to the other end of the third resistor;
a second optocoupler communicating a second current signal flowing from the cathode of the second diode; and
a fourth resistor, one end of which receives a control power supply and the other end of which is connected with the second optical coupler,
outputting the second current signal from between the other end and the first optocoupler,
the first resistor has a higher resistance value than the third resistor.
7. The home device of claim 1,
the stop processing includes operation prohibition processing in which the interface control unit does not accept an operation of the operation unit.
8. The home device of claim 1,
comprises a display part used for providing images for a user by the interface control part,
the stop processing includes any one of display stop processing of the display unit, display processing of a predetermined operation stop image on the display unit, and display processing of a predetermined plug-out time alarm screen on the display unit.
9. The home device of claim 1,
the stop processing includes a light-off processing of turning off the device power supply lamp in a case where the interface control section includes the device power supply lamp.
10. The home device of claim 1,
a communication wiring for communicating whether or not an abnormality occurs between the actuator driving section and the interface control section, and a notification unit for notifying an alarm are provided,
the stop processing includes alarm stop processing for causing the notification unit not to notify an abnormal alarm indicating that the operation received by the operation unit is not realized by the actuator driving unit.
11. The home device of claim 1,
a power supply switch that is present between the actuator driving unit and the power supply circuit unit and that transmits the internal power generated by the power supply circuit unit to the actuator driving unit when the power supply switch is turned on;
if the power supply switch is turned on from off, the power supply switch is kept on until a predetermined time elapses.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017143779 | 2017-07-25 | ||
| JP2017-143779 | 2017-07-25 | ||
| PCT/JP2018/002022 WO2019021509A1 (en) | 2017-07-25 | 2018-01-23 | Household electrical appliance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110892625A true CN110892625A (en) | 2020-03-17 |
| CN110892625B CN110892625B (en) | 2022-12-16 |
Family
ID=65039815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880011783.XA Active CN110892625B (en) | 2017-07-25 | 2018-01-23 | Household electrical appliance |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6717434B2 (en) |
| CN (1) | CN110892625B (en) |
| TW (1) | TWI699956B (en) |
| WO (1) | WO2019021509A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7465840B2 (en) * | 2021-03-18 | 2024-04-11 | 株式会社日立産機システム | Case-type devices |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2019021509A1 (en) | 2019-01-31 |
| TWI699956B (en) | 2020-07-21 |
| JPWO2019021509A1 (en) | 2019-11-07 |
| JP6717434B2 (en) | 2020-07-01 |
| TW201909540A (en) | 2019-03-01 |
| CN110892625B (en) | 2022-12-16 |
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