KR101498624B1 - Clothes dryer and clothes dryer control method - Google Patents

Abstract

The present invention relates to a power supply device for a vehicle, comprising: a power supply unit to which a single-phase three-wire power supply is applied; a conversion unit for converting and outputting a voltage of a single- Phase three-wire power source applied to the power source unit based on the magnitude of the output voltage measured by the sensing unit, determines whether the single-phase three-wire power source applied to the power source unit is misconnected, And to an abnormal operation of the product, and a control method thereof.

Description

[0001] Clothes dryer and control method of this [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clothes dryer and a clothes dryer control method, and more particularly, to a clothes dryer and a clothes dryer control method for judging whether a single-phase three-wire power source applied to a power source unit is misconnected.

Single-phase and three-wire power supplies power the device using N, L1 and L2 wires. At this time, the voltage difference between the L1 line and the N line and the voltage difference between the L2 line and the N line becomes 120 V, and the voltage difference between the L1 line and the L2 line becomes 240 V.

Therefore, a single code including N, L1, and L2 lines can be connected to a home appliance such as a clothes dryer to use a voltage of 120V or 240V.

At this time, if the user erroneously connects the N, L1, and L2 lines, the supply of power to the home appliances is incorrect, the normal operation can not be performed due to the power shortage, or a component shortage or a load breakage due to the supply of the overvoltage do.

According to the present invention, it is determined whether a single-phase three-wire power source applied to a power source unit is erroneously connected to prevent an undesired power source from being applied to the load due to miswiring, and a driving stop caused by a failure to supply power normally, And to provide a clothes dryer and a clothes dryer control method for preventing burn-out.

The present invention relates to a power supply device for a vehicle, comprising: a power supply unit to which a single-phase three-wire power supply is applied; a conversion unit for converting and outputting a voltage of a single- And a controller for determining whether the single-phase three-wire power source applied to the power source unit is misconnected based on the magnitude of the output voltage measured by the sensing unit.

According to another aspect of the present invention, there is provided a power conversion apparatus including: a power applying step in which a single-phase three-wire power source is applied to a power source unit; a transforming step in which a single-phase three-wire power source applied to the power source unit is transformed and output; And a display step of displaying miswiring information of the single-phase three-wire power source applied to the power source unit by the display unit, wherein the display unit displays the misconnection information of the single-phase three- to provide.

In the clothes dryer of the present invention, when the single-phase three-wire power source applied to the power source unit is transformed and output by the converting unit, the sensing unit measures the output voltage output by the converting unit, Phase three-wire power source can be accurately determined.

In addition, the clothes dryer according to the present invention has the effect that the user can immediately know whether the power source is misconnected by displaying mis-wiring information of the power source through the display unit and informing the user.

In addition, the clothes dryer according to the present invention has an effect of preventing the parts from being burned out and malfunctioning due to miswiring of the power source by interrupting the supply of the power source misconnected through the shielding part.

According to the clothes dryer control method of the present invention, it is determined whether the single-phase three-wire type power source applied to the power source unit is erroneously connected based on the output voltage outputted in the transforming step and the miswiring information is displayed through the display unit, There is an effect that it is possible to immediately grasp whether a wrong connection is made.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

1 is an exploded perspective view of a clothes dryer according to an embodiment of the present invention. 2 is an exploded view of a clothes dryer according to an embodiment of the present invention. Referring to FIGS. 1 and 2, a clothes dryer according to an embodiment of the present invention includes a cabinet 1 forming an outer appearance, a drum 10 disposed inside the cabinet 1 and containing a bag, A heater 30 installed on the suction passage 20 and an exhaust passage 30 provided so as to exhaust the air passing through the drum 10 to the outside of the cabinet 1 40).

The cabinet 1 includes a base 2, a cabinet main body 3 provided on the upper side of the base 2, a cabinet cover 4 provided on the front surface of the cabinet main body 3, A top cover 8 provided on the upper surface of the cabinet body 3 and a control panel 9 provided on the upper end of the cabinet cover 4. [

The cabinet cover 4 is formed with an access hole 5 for entering and exiting the carriage drum 10 and a door 6 for opening and closing the access door 5 is rotatably connected. A control panel 9 is provided at the upper end of the cabinet cover 4.

The control panel 9 is provided with an input section 9a for inputting a user's command and a display section 9b for displaying the operating state of the dryer such as the drying progress state, the drying progress degree, the remaining drying time, . A front supporter 11 for rotatably supporting the front end of the drum 10 is mounted to the rear of the cabinet cover 4.

On the front side of the back panel 7, a rear supporter 12 for rotatably supporting the rear end of the drum 10 is mounted. The rear supporter 12 is provided with a communication hole 13 for communicating the suction passage 20 with the drum 10 so that air having passed through the suction passage 20 can be sucked into the inlet of the drum 10.

The drum 10 is formed of a cylindrical drum which is received in the inside thereof and opened in the front-rear direction so that air passes in the front-rear direction.

The drum 10 is provided with a lift 14 protruding from the inner circumferential surface so that the drum 10 can be lifted and dropped when the drum 10 rotates.

The lower end of the suction passage 20 communicates with the heater 30 so that the heated air is introduced and the upper end communicates with the communication hole 13 of the rear supporter 12 so that the heated air is introduced into the drum 10. [ .

The heater 30 is composed of a heater case provided on the upper surface of the base 2 and communicating with the suction passage 20 and a heat generating coil arranged inside the heater case. When power is supplied to the heat generating coil, The space and the heater case are heated and the air passing through the inside of the heater case is heated to a high temperature.

The exhaust duct 40 includes a lint duct 42 having a lint filter 41 mounted thereon for communicating with the drum so as to exhaust air inside the drum 10 and allowing foreign substances such as seams in the air to pass therethrough, A fan housing 44 communicating with the duct 42 and incorporating a blowing fan 43 and an exhaust pipe 46 having one end communicated to the fan housing 44 and the other end extending to the outside of the cabinet 1 do. The exhaust pipe 46 allows the air in the drum 10 to be exhausted to the outside of the cabinet 1.

The operation of the clothes dryer according to an embodiment of the present invention will be described below.

First, after the cloth is put into the drum 10, the door 6 is closed and the clothes dryer according to the embodiment of the present invention is operated by operating the control panel 9, the heater 30 is operated And heats the air sucked into the suction passage (20).

At this time, the motor 72 is driven together to rotate the belt 70 and the blowing fan 43. The drum 10 rotates by the rotation of the belt 70, 14), and the operation of dropping is repeated.

The air outside the cabinet 1 is sucked through the air suction hole 7a of the back cover 7 by the air blowing force generated when the blowing fan 43 rotates, 1) and the drum (10). The air between the cabinet 1 and the drum 10 is heated and dehumidified as it is heated by the heater 30 and is then dehumidified through the communication hole 13 of the suction passage 20 and the rear supporter 12 10).

The high-temperature, low-humidity air sucked into the drum 10 is discharged to the outside through the exhaust passage 40 after the bubble in the drum 10 is dried.

3 is an enlarged perspective view of a power source unit 50 of a clothes dryer according to an embodiment of the present invention. Referring to FIG. 3, the power supply unit 50 is a means for receiving power for operating the clothes dryer.

A clothes dryer according to an embodiment of the present invention is operated by a single phase and three-wire power source. The user connects the external power source (not shown) and the power source unit 50 using the cord 51 to apply the single-phase three-wire power source. At this time, the cord 51 includes an N line 51a, an L1 line 51b, an L2 line 51c, and a ground line 51d which are neutral lines.

The power supply section 50 may be disposed in the back cover 7 of the cabinet 1 and the power supply section 50 includes a terminal section 52 to which respective power supply lines of the cord 51 are connected. That is, the N line 51a, the L1 line 51b and the L2 line 51c of the cord 51 are connected to the N terminal 52a, the L1 terminal 52b and the L2 terminal 52c of the terminal portion 52, do.

On the other hand, the ground wire 51d of the cord 51 is grounded to the ground or the back panel 7, so that the power supply unit 50 is supplied with a stable supply of power.

On the other hand, when the power supplied to the power supply unit 50 is a single phase three-wire type capable of supplying power of 120 V / 240 V, the voltage difference between the N line 51a and the L1 line 51b of the cord 51, The voltage difference between the N-line 51a and the L2-line 51c of the transistors 51 and 51 becomes 120 V, respectively. Then, the voltage difference between the L1 line 51b and the L2 line 51c becomes 240V.

The clothes dryer according to an embodiment of the present invention can operate by receiving a single-phase three-wire power source configured as described above. The clothes dryer is connected to the motor 72, the heater 30, And the circuit 73 as shown in FIG.

For example, in order for the motor 72 and the circuit 73 to operate normally, a power of 120 V must be supplied. In this case, the power supplied to the N-line 51a and the L1 line 51b is used, In order to operate normally, a power supply of 240 V must be supplied. In this case, a power source applied to the L1 line 51b and the L2 line 51c is used.

In order for the motor 72, the circuit 73 and the heater 30 to operate normally, the power supply lines of the cord 51 must be accurately connected to the power supply terminals of the power supply unit 52, respectively.

The N line 51a of the cord 51 is connected to the L2 terminal 52c of the terminal portion 52 and the L2 line 51c of the cord 51 is connected to the N terminal 52c of the terminal portion 52, The motor 72 and the circuit 73 are supplied with 240 V through the L1 terminal 52b and the N terminal 52a so that the motor 72 and the circuit 73 It can be burned out.

The power source of 120 V is applied to the heater 30 through the L1 terminal 52b and the L2 terminal 52c and the heater 30 can not reach 240V required for driving the heater 30 so that the heater 30 can not operate normally.

Therefore, it is necessary to accurately determine whether the single-phase three-wire power source applied to the power source unit 50 is erroneously connected in order to prevent the product from burning out and unusual operation due to miswiring of the power source as described above.

4 is a block diagram showing a configuration of a clothes dryer according to an embodiment of the present invention. 5 is a circuit diagram for determining whether a power source applied to the power source unit 50 of the clothes dryer according to the embodiment of the present invention is erroneously connected. Reference is now made to Figs. 4 and 5.

The clothes dryer according to an embodiment of the present invention includes a power source unit 50 to which a single phase three-wire power source is applied and a conversion unit 60 to vary the voltage of a single phase three- .

At this time, the converting unit 60 includes a linear transformer 61 for varying the voltage of the single-phase three-wire power source applied to the power source unit 50.

The power source that has been variable-voltage-controlled through the linear transformer 61 is again converted into a DC power source by the AD converter 62. [ The AD converter 62 converts the alternating current to a direct current using a diode. At this time, the AD converter 62 may be implemented as a bridge diode.

The power converted into a direct current by the AD converter 62 and outputted is smoothed through the direct current smoothing unit 63. [ The DC smoothing unit 63 may be constituted by a capacitor.

The smoothed power supply through the DC smoothing unit 63 is supplied to the motor 72, the circuit 73 and the heater 30, respectively.

The clothes dryer according to an embodiment of the present invention further includes a sensing unit 80 for measuring a voltage of a power source supplied to the motor 72 and the circuit 73 or the heater 30.

The sensing unit 80 is connected to the converting unit 60 through the power supply supplied to the N terminal 52a and the L1 terminal 52b in order to measure the voltage value of the power supply to the motor 72 and the circuit 73 And a first voltage meter 81 connected in parallel to the output side of the heater 30. The first voltage meter 81 is connected to the L1 terminal 52b and the L2 terminal 52c in order to measure the voltage value of the power source supplied to the heater 30. [ And a second voltmeter (82) connected in parallel to the transformed and outputted side through the transformer (60).

The first voltmeter 81 and the second voltmeter 82 are preferably composed of a DC voltmeter for measuring the voltage of the DC power outputted from the converter 60.

On the other hand, the control unit 90 determines whether the single-phase three-wire power source input to the power source unit 50 is misconnected based on the voltage value sensed by the sensing unit 80. [ For example, when the voltage measured by the first voltmeter 81 is larger than the predetermined voltage value M1, if at least one of the N terminal 51a and the L1 terminal 51b of the power supply unit 50 is dented It is determined that at least one of the L1 terminal 52b and the L2 terminal 52c is culminated when the voltage value measured by the second voltmeter 82 is smaller than the preset voltage value M2.

When the power source unit 50 is connected to the power source unit 50, a voltage of 0 V is measured at the sensing unit 80. In this case, the power source unit 50 is connected to the control unit 50 .

When it is determined that the single-phase three-wire power source applied to the power source unit 50 is erroneously wired by the control unit 90, the control unit 90 controls the display unit 9b to display the miswiring information.

At this time, the display unit 9b may not be provided in the control panel 9 but may be separately configured. However, the display unit 9b may be provided on the control panel 9 to display the state of the clothes dryer And also to display the miswiring information of the power source applied to the power source unit 50. [

6 is an enlarged perspective view of the control panel 9 shown in Fig. 6, when the controller 90 determines that the single-phase three-wire power source applied to the power source unit 50 is erroneously connected, the control unit 90 displays a message indicating that the user has been misconnected through the display unit 9b.

That is, when the power supplied to the power supply unit 50 is erroneously connected, the display unit 9b outputs a message such as "Power Fail" On the other hand, the message for displaying miswiring information is not limited to being output by an image. That is, various methods such as an audio output method of notifying the user by using a beep sound or the like can be used.

Referring to FIG. 4, the clothes dryer according to an embodiment of the present invention further includes a cut-off unit 100 for cutting off a power applied to the power source unit 50. When the single-phase three-wire power source applied to the power source unit 50 is judged to be erroneously wired, the control unit 50 controls the cut-off unit 100 to cut off the power applied to the power source unit 50, To prevent the parts from burning down or abnormal operation of the product.

The blocking portion 100 may be formed of a micro switch such as an oxide semiconductor field effect transistor (MOSFET).

7 is a flowchart illustrating a method of controlling a clothes dryer according to an embodiment of the present invention. 7, the clothes dryer control method according to an embodiment of the present invention starts the operation of the clothes dryer while the power switch is turned on by the user. (S10) At this time, Line type power supply is applied.

The single-phase three-wire type power supply applied to the power supply unit 50 is converted by the converting unit 60 into a voltage and a waveform. That is, a process of being transformed by the linear transformer 61, a process of being converted into a direct current by the AD converter 62, and a process of smoothing by the direct current smoothing unit 63 are output through a transforming step (S20 )

The control unit 90 compares the voltage of the power source output through the transforming step with a preset voltage M1 to determine whether or not the power source is misconnected (S30). That is, when the output voltage is greater than M1, It is judged that it is authorized. In this case, the predetermined voltage M1 is a voltage value output by the converting unit 60 based on when the single-phase three-wire power source is normally applied to the power source unit 50. [

If it is determined in step S30 that the power supplied to the power supply unit 50 is erroneously wired by the control unit 90, the control unit 50 controls the display unit 9b to display a miswiring message.

In step S50, the control unit 90 controls the cutoff unit 100 to cut off the power applied to the power supply unit 50. [

For example, if it is determined that at least one of the N terminal 52a and the L1 terminal 52b is line-connected and a voltage of 240 V is applied, the motor 72 and the circuit 73 are connected to a power source 50 in step S60. In step S60,

On the other hand, when the voltage of the power source outputted through the transforming step is equal to or less than M1, the control unit 90 controls the clothes drying step to be performed normally because the power source is correctly applied to the power source unit 50. (S40)

8 is a flowchart showing a clothes dryer control method according to another embodiment of the present invention. 8, the clothes dryer control method according to another embodiment of the present invention starts the operation of the clothes dryer while the power switch is turned on by the user (S110). At this time, Line type power supply is applied.

The single-phase three-wire power source applied to the power supply unit 50 is converted by the converting unit 60 into a voltage and a waveform. That is, a process of being transformed by the linear transformer 61, a process of being converted into a direct current by the AD converter 62, and a process of smoothing by the direct current smoothing unit 63 are output through a transforming step (S120 )

The control unit 90 compares the voltage of the power source outputted through the transforming step with a preset voltage M2 to determine whether or not the power source is misconnected (S130). That is, when the output voltage is smaller than M2, It is judged that it has not been licensed. In this case, the predetermined voltage M2 is a voltage value output by the converting unit 60 based on a case where a single-phase three-wire power source is normally applied to the power source unit 50. [

If it is determined in step S130 that the power supplied to the power supply unit 50 is erroneously wired by the control unit 90, the controller 50 controls the display unit 9b to display a miswiring message (S150)

In step S150, the control unit 90 controls the cutoff unit 100 to cut off the power applied to the power supply unit 50. [

For example, if it is determined that at least one of the L1 terminal 52b and the L2 terminal 52c is line-connected and a voltage of 120V is applied, a sufficient voltage is not applied to the heater 30 so that the heater 30 can not operate normally Therefore, in order to prevent unnecessary power consumption, the power supply to the power supply unit 50 is shut off (S160)

Meanwhile, when the voltage of the power source outputted through the transforming step is equal to or greater than M2, the control unit 90 controls the clothes drying cycle to be normally performed because the power source is correctly applied to the power source unit 50 (S140)

Although the present invention has been described with reference to the embodiments shown in the drawings, it is to be understood that various changes and modifications may be made therein without departing from the scope of the invention as defined by the appended claims. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

1 is an exploded perspective view of a clothes dryer according to an embodiment of the present invention.

2 is a partial cutaway view of a clothes dryer according to an embodiment of the present invention.

3 is an enlarged perspective view of a power source unit of a clothes dryer according to an embodiment of the present invention.

4 is a block diagram showing a configuration of a clothes dryer according to an embodiment of the present invention.

FIG. 5 is a circuit diagram for determining whether a power source applied to a power source of a clothes dryer according to an exemplary embodiment of the present invention is wired or not.

Fig. 6 is an enlarged perspective view of the control panel shown in Fig. 1. Fig.

7 is a flowchart illustrating a method of controlling a clothes dryer according to an embodiment of the present invention.

8 is a flowchart showing a clothes dryer control method according to another embodiment of the present invention.

Description of the Related Art

50: power supply unit 60:

80: sensing part 9b: display part

100: breaking portion 72: motor

73: circuit 30: heater

Claims (12)

A power supply unit to which a single phase three-wire power source is applied; A converting unit for converting a voltage of the single-phase three-wire power source applied to the power source unit and outputting the converted voltage; A sensing unit for measuring an output voltage output from the converting unit; And Phase three-wire power source applied to the power source unit, based on a voltage difference between a neutral line of the single-phase three-wire power source and one of the main lines, based on the voltage value sensed by the sensing unit, And a clothes dryer. The method according to claim 1, Wherein, And determines that the single-phase three-wire power source applied to the power source unit is erroneously wired if the voltage difference is equal to or greater than the reference voltage. delete The method according to claim 1, Further comprising a display unit for displaying mis-wiring information of the single-phase three-wire type AC power source applied to the power source unit. 5. The method of claim 4, Wherein, Wherein when the single-phase three-wire AC power applied to the power source unit is judged to be erroneously connected, misdirection information is displayed through the display unit. The method according to claim 1, And a cut-off portion for cutting off a power applied to the power supply portion. The method according to claim 6, Wherein, Way 3-wire type power source applied to the power source unit is disconnected, the single-phase three-wire type power source applied to the power source unit is cut off through the cut-off unit. The method according to claim 1, Wherein, Wherein the single-phase three-wire power source applied to the power source unit is converted into direct current power and is output. 9. The method of claim 8, Wherein the sensing unit includes a DC voltmeter. A power applying step in which a single phase three-wire power source is applied to a power source unit; A transforming step of transforming and outputting a single-phase three-wire power source applied to the power source unit; Determining whether a single-phase three-wire type power source applied to the power source unit is misconnected based on a voltage difference between the neutral line of the single-phase three-wire type power source and any one of the phase lines; And And displaying the miswiring information of the single phase three-wire power source applied to the power source unit by the display unit. 11. The method of claim 10, Further comprising a power cut-off step of cutting off a single-phase three-wire power source applied to the power source unit when it is determined that the single-phase three-wire power source applied to the power source unit is erroneously connected in the erroneous wire determining step. 11. The method of claim 10, Wherein the transforming step comprises: Further comprising the step of converting the single-phase three-wire power source applied to the power source unit to a direct current power source.

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