JP2006015031A - Clothes dryer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To lower the peak value in electric power consumption of an apparatus to prevent a voltage drop in a system or trip of a breaker. <P>SOLUTION: The period in which the input power to a first driving circuit 55 for driving a rotation compartment motor 43 reaches the maximum and the period in which the input power to a second driving circuit 56 for driving a compressor 44 reaches the maximum is prevented from overlapping, so that the apparatus has a reduced peak value in power consumption to prevent the voltage drop in the system or trip of the breaker. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a clothes dryer used for washing work or the like for general household use or business use.

Conventionally, this type of clothes dryer performs drying by circulating air dehumidified by an evaporator through a condenser and circulating it as a dry air to a rotating drum (for example, refer to Patent Document 1). FIG. 9 shows a cross-sectional view of a conventional clothes dryer described in Patent Document 1. As shown in FIG. As shown in FIG. 9, a rotating drum 2, a motor 3, a blower 22, a circulation duct 18, an evaporator 23, a condenser 24, a compressor 25, a throttle device 26, and an inverter circuit 32 are provided in the main body 1. While the compressor 25 is driven by 32, the air as shown by the arrow by the blower 22 is applied to an object to be dried 21 such as laundry put in the rotary drum 2, and the air dehumidified by the evaporator 23 is It was led to the condenser 24 and circulated as dry air again into the rotary drum 2, and a part of the dry air was discharged to the outside through the exhaust port 28.
JP 7-178289 A

  However, in the conventional configuration, there is no particular description of the inverter circuit 32 that is a drive circuit that drives the compressor 25 and the drive circuit that supplies electric power to the motor 3 that rotationally drives the rotary drum 2. It is considered that the motor 3 and the inverter circuit 32 are independently connected from a commonly used 100 V 50 Hz or 60 Hz AC power source, the power supplied to the drive circuit that supplies current to the motor 3, and the compressor 25 As for the power supplied to the inverter circuit 32 that is a drive circuit for driving the power supply, it may be the case that the maximum value is simultaneously reached during the drying operation. Had problems such as a breaker falling.

  The present invention solves the above-mentioned problem, by limiting the power supplied to the rotating circuit motor that rotates by putting clothes and the drive circuit that drives the compressor, and at the same time avoiding becoming a large value, It is an object of the present invention to provide a clothes dryer capable of preventing the power supply voltage of the system from being lowered and the breaker from being dropped.

  In order to solve the above-mentioned problems, a clothes dryer of the present invention drives a rotary warehouse for storing clothes, a rotary warehouse motor for rotating the rotary warehouse, a heat pump cycle having a compressor, and the rotary warehouse motor. A first drive circuit and a second drive circuit for driving the compressor; a period during which the input power of the first drive circuit is maximum; and the second drive circuit has a maximum input power. The period which becomes becomes the structure which does not overlap mutually.

  As a result, the power supplied to each of the first drive circuit and the second drive circuit is not maximized at the same time, so that the maximum power consumption of the entire apparatus is reduced accordingly, and the power supply of the connected system Even if the voltage is lowered or the breaker having a relatively small capacity is used, the breaker can be prevented from dropping.

  The clothes dryer of the present invention can realize a device that suppresses the overall maximum power consumption, prevents malfunction of other equipment due to a drop in the power supply voltage of the system, and is used with a breaker with a small capacity. Make it possible.

  According to a first aspect of the present invention, there is provided a rotary store for storing clothing, a rotary store motor for rotating the rotary store, a heat pump cycle having a compressor, a first drive circuit for driving the rotary store motor, and the compressor. And the second drive circuit is configured such that the period during which the input power of the first drive circuit is maximum and the period during which the input power is maximum do not overlap each other. Thus, it is possible to eliminate the maximum amount of power supplied to each of the first drive circuit and the second drive circuit at the same time, and to realize a clothes dryer that suppresses the maximum power consumption of the whole. It will be possible.

  In particular, the second invention has a strong rotation period in which the input power of the first drive circuit is maximized during the operation period of the compressor of the first invention, and the second drive circuit is in the strong rotation period. By making the speed of the compressor smaller than the maximum speed, the clothes that stuck to the rotating cabinet during drying are peeled off to increase the frequency of contact between the clothes and the air. By reducing the power supplied to the drive circuit 2, it is possible to effectively prevent a jump in power consumption of the device that occurs at that time.

  In particular, the third invention has a plurality of operation periods of the compressor of the first invention, and has a period in which the input power of the first drive circuit is maximized in the idle period between the operation periods. While suppressing the power consumption of the entire apparatus, the clothes that have clung to the rotating cabinet during drying are peeled off more strongly, or the effect of reducing the power consumption of the entire apparatus is enhanced.

  In the fourth invention, in particular, the maximum value of the speed of the compressor within the period from the start of the compressor of the second invention to the start of the strong rotation period is larger than the speed of the compressor in the strong rotation period. As a result, the temperature of each part of the heat pump cycle, etc. is once fully activated and activated, and then the clothes stuck to the rotating cabinet can be peeled off strongly, and the drying time can be further shortened It becomes.

  In particular, the fifth invention includes first current detection means for detecting an input current of the first drive circuit according to any one of the first to fourth inventions, and the second drive circuit is the first drive circuit. By changing the speed of the compressor according to the output value of the current detection means, even if the amount or type of clothing changes, the first current detection means correspondingly The compressor of the second drive circuit is operated according to the correct measured value of the power supplied to the first drive circuit, and the power consumption of the entire apparatus can be reduced with higher accuracy.

  In particular, the sixth invention has a second current detection means for detecting a current including the input currents of both the first drive circuit and the second drive circuit of any one of the first to fourth inventions. In the second drive circuit, the speed of the compressor is changed so that the output value of the second current detection unit does not exceed a predetermined value. Since the output corresponding to the overall power consumption value of the apparatus is output, the power consumption of the entire apparatus is more accurately limited to a predetermined value or less while reducing the speed of the compressor as necessary.

  In particular, the seventh invention has third current detection means for detecting the input current of the second drive circuit of the first invention, and the first drive circuit outputs the output value of the third current detection means. By changing the speed of the rotating cabinet according to the operation, while maintaining the capacity of the heat pump cycle, the rotation strength of the rotating cabinet operates to suppress the jump in the power consumption of the device to a certain extent To be.

  In particular, the eighth invention has second current detection means for detecting current including input currents of both the first drive circuit and the second drive circuit of the first invention, and the first drive circuit Since the speed of the rotating cabinet is changed so that the output value of the second current detection means does not exceed a predetermined value, the second current detection means can respond more to the overall power consumption value of the apparatus. Therefore, the power consumption of the entire apparatus is more accurately limited to a predetermined value or less while reducing the speed of the rotating cabinet as necessary.

  According to a ninth invention, in particular, any one of the first to eighth inventions has a water supply means, and the clothes are washed in the rotating cabinet with water supplied from the water supply means. In addition, the present invention realizes full automation in which the maximum value of power consumption of the entire apparatus is suppressed and washing to drying can be performed by one apparatus.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiment.

(Embodiment 1)
FIG. 1 shows a circuit diagram of a clothes dryer according to the first embodiment of the present invention. In FIG. 1, a rotary store 42 for storing clothing 41, a rotary store motor 43 connected to a rotary shaft of the rotary store 42 and connected to a rotary shaft, a compressor 44, heat exchangers 45 and 46, and a capillary tube 47 are connected. A heat pump cycle 48 is provided. Furthermore, it has the ventilation means 51 which circulates and moves the air between the heat exchangers 45 and 46 and the rotation store | warehouse | chamber 42 in the ventilation path 50. FIG.

  The heat exchanger 45 is also called an evaporator or the like because it evaporates the refrigerant and sucks heat from the air into the refrigerant. On the other hand, the heat exchanger 46 acts to give heat from the refrigerant to the air. Although it is sometimes called a condenser, the refrigerant to be used is not limited to various types of chlorofluorocarbons. For example, a refrigerant that uses carbon dioxide (CO2) in a supercritical state may be used. It does not matter even if it is.

  Then, power is supplied from the noise filter circuit 52 to the first drive circuit 55 that drives the rotary motor 43 through the first current detection means 53, and the compressor 44 is driven from the noise filter circuit 52. The second drive circuit 56 is also connected, and a common radiator 57 is provided. An AC power supply 61 of 100 V 50 Hz or 60 Hz is connected to a household outlet, is connected to the input of the noise filter circuit 52, and serves as a base for supplying all power used for the apparatus.

  The first current detection means 53 detects the input current of the first drive circuit 55, the output is input to the second drive circuit 56, and the second drive circuit 56 outputs the output of the first current detection means 53. The speed of the compressor 44 is changed according to the value. Further, the water supply means 63 is constituted by a water supply pipe 65 and a water supply valve 65 that puts and stops the water from the water pipe 64 by opening and closing, and water is supplied from the water supply means 63 to the rotary chamber 42, and in the rotary cabinet 42. The clothes 41 are also washed and dehydrated.

  The drainage 68 is provided in the lower part of the rotary cabinet 42. When the drainage 68 is in the closed state, water is stored in the rotary cabinet 42 for washing and rinsing. Is thrown away into the water distribution pipe 69.

  FIG. 2 shows a detailed circuit diagram of the clothes dryer of the present embodiment. A noise filter circuit 52 to which a power plug 61 receiving 50 V or 60 Hz of 100 V is connected has a normal choke coil 85 using a silicon steel plate core and a common choke coil 86 using a ferrite core. The output from 86 is connected to the first drive circuit 55 via the first current detection means 53 on the way of one line, and the other is directly connected to the first drive circuit 55. Thus, the value of the current flowing into the first drive circuit 55 can be detected by the first current detection means 53.

  Further, the noise filter circuit 52 also has a common choke coil 87 using a ferrite core and a choke coil 88 formed by winding one enamel wire around an EI type laminated silicon steel sheet core, and the output thereof is the first. 2 drive circuit 56.

  As described above, in the present embodiment, since the choke coils for connecting to the respective inputs of the first drive circuit 55 and the second drive circuit 56 are separately provided, adverse effects due to mutual noise are caused. The operation is extremely stable.

  The first drive circuit 55 is composed of a full-wave rectifier 90 in which four diodes are assembled in a bridge connection, and electrolytic capacitors 99 and 92 connected to the output of the rectifier 90. The generated DC voltage is generated.

  Further, it uses six first control elements 101, 102, 103, 104, 105, 106, all of which are connected in reverse parallel between an insulated gate transistor (IGBT) and a collector-emitter. All of this is realized by a kind of semiconductor switching element having a diode, and these first control elements are configured to be turned on / off by a drive 107, and are generally a three-phase six-stone inverter circuit or the like. Is used.

  On the other hand, the same applies to the second drive circuit 56, which is composed of a full-wave rectifying element 93 in which four diodes are assembled in a bridge connection, and electrolytic capacitors 94, 95 connected to the output of the rectifying element 93. Then, a DC voltage is generated by performing a voltage doubler rectification operation.

  Six second control elements 111, 112, 113, 114, 115, and 116 are used, each having an insulated gate transistor (IGBT) and a diode connected in reverse parallel between the collector and the emitter. All of this is realized by a kind of semiconductor switching element, and these second control elements use a configuration generally referred to as a three-phase six-stone inverter circuit or the like that is turned on / off by a drive 117. ing.

  In the present embodiment, since the first drive circuit 55 and the second drive circuit 56 both use voltage doubler rectification are configured, the 100 V AC power supply 61 is used as a DC voltage of 200 V or more. Therefore, the rated current capacities of the first control elements 101 to 106 and the second control elements 111 to 116 can be smaller than the normal full-wave rectification. However, it is not particularly concerned with voltage doubler rectification, and a rectification method other than voltage doubler rectification may be used for the sake of design.

  In addition, the second drive circuit 56 also includes six second control elements 111, 112, 113, 114, 115, 116 and is configured to be turned on / off by the drive 117.

  However, each of the first control elements 101 to 106 and the second control elements 111 to 116 is not particularly limited to the IGBT, and may be a bipolar transistor, a MOSFET, or the like. The first drive circuit 55 and the second drive circuit 56 may further convert the voltage once converted into a direct current, and the rotary motor 43 and the compressor 44 may be replaced by the first drive circuit 55 and the second drive circuit 56. In addition to the driving device, for example, a triac is used, and the AC power supply 61 is appropriately phase-controlled to change the speed of the rotary chamber 42 and the speed of the compressor, or using a DC motor with a brush, There are various possibilities such as changing the input DC voltage with, for example, a chopper circuit. As long as the fine speed is controlled, not the type and circuitry of the motor to be questioned.

  In the present embodiment, the air blowing means 51 is constituted by a third drive circuit 120 to which a DC voltage from the first rectifier circuit 58 is supplied, and a three-phase fan motor 121 connected to the output thereof. However, the third drive circuit is also configured as a three-phase six-stone inverter circuit.

  The control circuits 125 and 126 are control circuits for the first drive circuit 55 and the second drive circuit 56, respectively, and control the operation frequency and the like. The control circuit 125 realizes a series of washing and drying operations by controlling the third drive circuit 120 and communicating with the control circuit 126.

  The power supply circuits 127 and 128 are switching-type circuits that operate by receiving a DC voltage from both ends of the capacitors 92 and 93, respectively. A 15V and 5V DC power supply is supplied to the first drive circuit 55 and the second drive circuit 56, respectively. Are supplied to each of the control circuits 125 and 126.

  In the present embodiment, the first drive circuit 55 and the second drive circuit 56 have a difference in potential on the negative terminal side, so that the communication between the control circuits 125 and 126 can ensure electrical insulation. Thus, a communication path using photocouplers 130 and 131 incorporating a light emitting element and a light receiving element is provided, and the speed setting value of the compressor 44 is sent from the control circuit 125 to the control circuit 126. The rotation speed, error information, and the like are sent back from the control circuit 126 to the control circuit 125 in the reverse direction.

  The first current detection unit 53 includes a current transformer 150, a load resistor 151 connected to the secondary side of the current transformer 150, a full-wave rectifier bridge 152, and a capacitor 153. A substantially DC output voltage proportional to the magnitude of the flowing AC current can be obtained. However, the first current detection means 53 is not limited to such a configuration. For example, the first current detection means 53 may be one that uses a low resistance to detect the current flowing therethrough based on the magnitude of the potential difference generated at both ends. .

  Further, the position on the circuit where the first current detection means 53 is provided is also provided in a portion where an alternating current is supplied from the noise filter 52 to the first drive circuit 55 as in the present embodiment. It is not particularly limited to be provided at this position. For example, it is provided inside the noise filter 52, the input side portion of the noise filter 52, or the output side of the rectifying element 90 to detect a direct current component. It does not matter.

  FIG. 3 is an operation waveform diagram of the clothes dryer of the present embodiment. 3A shows the change in the input power P1 of the first drive circuit 55, FIG. 3A shows the change in the rotation speed of the compressor 44, and FIG. 3C shows the second drive. The change of the input power P2 of the circuit 56 is shown.

  In the dehydration dryer according to the present embodiment, the first drive circuit 55 basically rotates in the opposite direction, such as clockwise, counterclockwise, and clockwise, at 60 rotations per minute during washing. During the dehydration, the rotating cabinet 42 is rotated clockwise up to 1000 revolutions per minute. In addition, since rinsing is performed during the washing period, there is also a period in which the rotating cabinet 42 is driven at 1000 revolutions per minute as in the case of dehydration.

  In the present embodiment, the second drive circuit starts the compressor 44 in the middle of dehydration, and continues to drive the compressor 44 even during drying. Thus, before drying, By starting up the compressor 44 and increasing the speed to 100 revolutions per minute (100 r / s), the temperature and pressure of each part of the heat pump cycle 48 are sufficiently raised when dehydration is completed. Since the refrigerant and the heat exchangers 45 and 46 are activated, the subsequent drying operation can be effectively started.

  As can be seen from FIG. 3, at the time of dehydration, the input power of the first drive circuit 55 is 300 W at the maximum in a situation where the speed of the rotating cabinet 42 is a considerably high speed of about 1000 revolutions per minute.

  On the other hand, at the time of drying, since the rotary store 42 is rotated alternately to the left and right as in washing, the speed is driven at about 60 revolutions per minute. Therefore, the input power of the first drive circuit 55 is 20 W. The degree is much smaller than that during washing or dehydration. During drying, the compressor 44 is driven by the second drive circuit 56. To shorten the time required for drying, for example, within 2 hours, the input power of the second drive circuit 56 is set to 800 W. It is necessary to enter a fairly large value of degree.

  Here, in a strong rotation period within the drying period, the rotation motor 43 that drives the rotation chamber 42 is reversed left and right in a short cycle and the maximum speed is rapidly increased to 120 rotations per minute from several times. By performing the operation ten times, the clothes stuck to the inside of the rotating cabinet 42 due to the centrifugal force at the time of dehydrating high-speed rotation are peeled off from the inner wall surface of the rotating cabinet 42. By increasing the contact frequency, drying can be carried out more effectively, and excellent drying results can be obtained even with a short drying time and a small amount of power consumption.

  In the present embodiment, the strong rotation period is during the operation period of the compressor 44, but the second drive circuit 56 sets the speed of the compressor 44 to 70 r / s, which is lower than the maximum speed of 100 r / s. By operating by pulling down, the power supply value to the second drive circuit 56 is suppressed to 400W.

  Therefore, the period in which the input power of the first drive circuit 55 is maximum and the period in which the second drive circuit 56 has the maximum input power do not overlap each other, and the overall power consumption value of the device is the maximum. However, it is suppressed to about 830 W, but this is smaller than 1200 W, which is the total value of the maximum input power 400 W of the first drive circuit 55 and the maximum input power 800 W of the second drive circuit 56, thereby reducing the current capacity. It can be used without worrying about breaker breakage even under the condition of using the same breaker, and the power supply voltage of the system will not be abnormally lowered. For example, malfunctions such as malfunctions may be prevented and the apparatus can be used satisfactorily.

  Further, in this embodiment, the speed of the compressor 44 in the period from the start of the compressor 44 to the start of the strong rotation period is set to 100 r / s at the maximum. This is the speed 70 r of the compressor 44 in the strong rotation period. It is greater than / s, and by operating in this way, the temperature and pressure of each part of the heat pump cycle 48 are sufficiently activated, so that a great difference can be made in the subsequent drying performance It becomes.

  In the present embodiment, the heat from the radiator 57 is collectively released from the loss of the first drive circuit 55 and the second drive circuit 56 at the time of drying. Since the total input power of the driving circuit 55 and the second driving circuit 56 is limited, there is no period in which the heat power processed by the radiator 57 is excessive, even if it has a relatively small shape. In addition, it is possible to effectively dissipate heat and to achieve a highly reliable device.

  In the present embodiment, the rotary chamber 42 has a horizontal rotation axis. However, the rotary chamber 42 is not necessarily limited to a horizontal rotation axis. For example, the rotary chamber is a vertical axis that is generally called a vertical shape and rotates during dehydration. Or a rotating shaft inclined about 20 to 30 degrees with respect to the horizontal so that clothes can be easily taken in and out. It is also possible to further provide a structural element such as a mechanical part so that effective washing can be performed during washing.

(Embodiment 2)
FIG. 4 shows a circuit diagram of a clothes dryer according to the second embodiment of the present invention. In FIG. 4, the current detection unit is omitted from the first embodiment, but the other structures are the same as those of the previous embodiment. FIG. 5 is an operation waveform diagram of the present embodiment. FIG. 5A is the input power P1 of the first drive circuit 55, FIG. 5A is the speed N of the compressor 44, and FIG. Indicates changes in the input power P2 of the second drive circuit 56.

  In the present embodiment, in the strong rotation period in which the input power P1 of the first drive circuit 55 within the drying period is maximum, the rotary chamber 42 is driven to be inverted in a short cycle from side to side, and the inside of the rotary chamber 42 The operation of tearing off the clothes that are clinging to is performed, and this period is the rest period of the first compressor 44. And it has two operation periods on both sides of the said rest period.

  Thus, in this embodiment, the idle period has a period in which the input power of the first driving circuit reaches the maximum value of 400 W, and the strong cloth is peeled off. Can be done.

  In the present embodiment, the first drive circuit 55 is not provided with a current detection circuit specially for detecting the input power, but the compressor 44 is set in a pause period and is completely stopped. Therefore, the electric power consumed by the second drive circuit 56 during this period becomes almost zero, so that the first drive circuit 55 performs a powerful drive to the rotary storage motor 43 to perform the clothes peeling operation and the like. Even if the operation is performed, the power consumption of the entire apparatus can be sufficiently suppressed. After that, when the compressor 44 is started, the warm air can efficiently contact the clothing, which is very effective. The effect that a typical drying operation is performed can be obtained.

  In the present embodiment, the compressor 44 is completely stopped. However, the compressor 44 may be operated at a reduced speed as in the previous embodiment. If the upper limit of the power consumption of the entire apparatus can be suppressed by design with the maximum value of the input power to one drive circuit 55 and the total value of the second input power, the compressor 44 can be kept at, for example, 100 r / s. Compared to continuous operation at speed, the jumping in power consumption is clearly suppressed, and the device can be used under a breaker with a small current capacity, or connected to the same power system. For such devices, it is possible to prevent malfunctions such as malfunctions due to deterioration of the power supply environment such as a voltage drop.

(Embodiment 3)
FIG. 6 shows a circuit diagram of a clothes dryer according to the third embodiment of the present invention. In FIG. 6, the third current detection means 160 for detecting the input current of the second drive circuit 56 is provided, but the other configurations are the same as those in the first embodiment. It has become.

  As a detailed circuit configuration of the third current detection unit 160, a configuration equivalent to that of the first current detection unit 53 shown in FIG. 2 is used, and the magnitude of the current flowing into the second drive circuit 56 is large. A DC voltage with a value corresponding to the voltage is output, but this is also detected by the voltage generated between the terminals by a resistor, etc., and the DC current detected by the position where it is installed Various configurations can be used.

  In the present embodiment, the first drive circuit 55 changes the speed setting of the rotary motor 43 according to the output value of the third current detection means 160, and the speed of the rotary cabinet 42 changes. It is what.

  7A, 7A, and 7C respectively show the input power P1 to the first drive circuit 55, the speed N of the compressor 44, and the input power P2 to the second drive circuit 56 in the present embodiment. In this embodiment, the compressor 44 is always driven from the second drive circuit 56 at a constant speed of 100 r / s during the drying operation. Thus, the input power of the second drive circuit 56 is always 800 W.

  Here, the third current detection means 160 detects a current value substantially proportional to P2, and transmits the output to the first drive circuit 55. The first drive circuit 55 receives the output and is strong. The input power to the first drive circuit 55 during the strong rotation period is set to 130 W by adjusting the speed of the rotary motor 43 during the rotation period, or by adjusting the left / right reversal period, the amount of time variation of the startup, etc. It is designed to be suppressed.

  Thereby, compared with Embodiment 1 etc., the strength of the clothes peeling operation during the strong rotation period of the rotary storage 42 is somewhat reduced, but instead, the speed of the compressor 44 can be maintained. There are also conditions that have an advantageous effect on drying, such as keeping the temperature of the warm air hitting the clothing at a constant high value, and the maximum value of the current consumption of the device can be suppressed to some extent. In addition, about the weakness of the clothes peeling by the rotation operation | movement of the rotation store | warehouse | chamber 42, you may cover by extending the strong rotation period by that much.

  As a result, the total power of the apparatus becomes 930 W, but if the input power of the second drive circuit 56 is low during the strong rotation period, the set value of the speed of the rotary motor 43 is increased or the cycle of inversion The amount of time change of startup is increased, and the operation of strongly removing the clothes from the inner wall of the rotating cabinet 42 is performed under the condition that the maximum value of the total power of the apparatus is kept substantially constant. It will be a thing.

(Embodiment 4)
FIG. 8 shows a circuit diagram of a clothes dryer according to the fourth embodiment of the present invention. In FIG. 8, the second current detector 161 detects a current including the input currents of both the first drive circuit 55 and the second drive circuit 56.

  The configuration of the second current detection means 161 is the same as the circuit configuration of the first current detection means 53 shown in FIG. 2, but other configurations, for example, resistances using resistors are used. It is good also as a structure which detects the magnitude | size of an electric current by detecting the voltage drop which generate | occur | produces at both ends of. Other configurations are the same as those in the first embodiment.

  In the present embodiment, the second drive circuit 56 receives the output value of the second current detection means 161, and adjusts the speed of the compressor 44 so that it does not exceed a predetermined value. When there are fluctuations in various conditions such as room temperature, the fluctuation of electric power with respect to the speed may occur due to the change in the characteristic of the torque with respect to the speed (ST characteristic) that may occur with respect to each of the rotary chamber 42 and the compressor 44. However, since the total input power of the first drive circuit 55 and the second drive circuit 56 is limited to a predetermined value regardless of such factors, the power consumption of the device with higher accuracy can be obtained. Therefore, it is possible to more surely prevent the deterioration of the power supply environment such as use under a breaker having a small capacity current rating and a decrease in power supply voltage to other devices.

  In addition, when the speed of the compressor 44 is greatly reduced, the circulation of the lubricating oil in the compressor 44 may be deteriorated. For example, the lower limit of the operating speed of the compressor 44 is set to 25 r / s. When the sum of the input powers of the drive circuit 55 and the second drive circuit 56 is expected to exceed a predetermined value, the compressor 44 may be stopped.

  Due to the decrease in the speed of the compressor 44, the temperature and pressure of each part of the heat pump cycle 48 will lose some activity once. However, if necessary, it can be dealt with by extending the drying time thereafter. It is.

  In the present embodiment, the speed at which the second drive circuit 56 drives the compressor 44 is adjusted by receiving the output of the second current detection means 161. Similarly, the second current detection is performed. While the means 161 is provided, the first drive circuit 55 changes the speed of the rotary motor 43, that is, the speed of the rotary warehouse 42 so that the output value of the second current detection means 161 does not exceed a predetermined value. In this case, the effect of this case is the same as that described in the third embodiment except that the current consumption of the entire apparatus is limited with high accuracy.

  As described above, the clothes dryer according to the present invention suppresses the maximum power consumption by preventing the power supplied to each of the first drive circuit and the second drive circuit from simultaneously maximizing. An apparatus can be realized, and it is possible to provide a clothes dryer that prevents malfunction of other equipment due to a decrease in the power supply voltage of the system and that can be used with a breaker having a small capacity.

Block diagram of a clothes dryer in Embodiment 1 of the present invention Circuit diagram of the clothes dryer Waveform diagram of the electric power of the clothes dryer and the speed of the compressor Block diagram of clothes dryer in Embodiment 2 of the present invention Waveform diagram of the electric power of the clothes dryer and the speed of the compressor Block diagram of clothes dryer in Embodiment 3 of the present invention Waveform diagram of the electric power of the clothes dryer and the speed of the compressor Block diagram of a clothes dryer in Embodiment 4 of the present invention Cross section of a clothes dryer in the prior art

Explanation of symbols

42 Rotating chamber 43 Rotating chamber motor 44 Compressor 48 Heat pump cycle 53 First current detecting means 55 First driving circuit 56 Second driving circuit 63 Water supply means 161 Second current detecting means 160 Third current detecting means

Claims (9)

A rotary store for storing clothes, a rotary store motor for rotating the rotary store, a heat pump cycle having a compressor, a first drive circuit for driving the rotary store motor, and a second drive for driving the compressor A clothes dryer having a drive circuit, wherein a period in which the input power of the first drive circuit is maximum and a period in which the second drive circuit has the maximum input power do not overlap each other. During the operation period of the compressor, it has a strong rotation period in which the input power of the first drive circuit is maximum, and the second drive circuit has the speed of the compressor smaller than the maximum speed during the strong rotation period The clothes dryer according to claim 1. The clothes dryer according to claim 1, wherein the clothes dryer has a plurality of operation periods of the compressor, and has a period during which the input power of the first drive circuit is maximized during a pause period between the operation periods. The clothes dryer according to claim 2, wherein the maximum value of the speed of the compressor in the period from the start of the compressor to the start of the strong rotation period is larger than the speed of the compressor in the strong rotation period. The first drive circuit has first current detection means for detecting the input current of the first drive circuit, and the second drive circuit changes the speed of the compressor according to the output value of the first current detection means. The clothes dryer according to any one of claims 1 to 4. A second current detection unit configured to detect a current including input currents of both the first drive circuit and the second drive circuit, wherein the second drive circuit outputs an output value of the second current detection unit; The clothes dryer according to any one of claims 1 to 4, wherein the speed of the compressor is changed so that does not exceed a predetermined value. A third current detecting means for detecting an input current of the second driving circuit is provided, and the first driving circuit changes the speed of the rotating cabinet according to the output value of the third current detecting means. The clothes dryer according to claim 1. A second current detection unit configured to detect a current including an input current of both of the first drive circuit and the second drive circuit, wherein the first drive circuit has a predetermined output value of the second current detection unit; The clothes dryer according to claim 1, wherein the speed of the rotary cabinet is changed so as not to exceed the value. The clothes dryer according to any one of claims 1 to 8, further comprising a water supply means, wherein clothes are washed in a rotating cabinet with water supplied from the water supply means.

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