JP2014054377A - Drying apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drying apparatus that can increase the drying speed at an early stage in drying using a relatively simple arrangement.SOLUTION: In a drying apparatus, a controlling unit 90 performs one of a first control, a second control, and a third control from a beginning of operation for drying a target matter to be dried. In the first control, a fluid passage controlling unit 972 controls an expansion valve 16 such that a difference in temperature between a temperature detected by a first temperature detecting unit and the temperature detected by a second temperature detecting unit is close to an alternative value set as a value greater than a target value, and a blowing controlling unit 96 controls a rotating unit 9a such that the rotating unit 9a rotates at a lower rotating speed than a predetermined rotating speed. In the second control, the blowing controlling unit 96 controls the rotating unit 9a such that the rotating unit 9a rotates at a lower rotating speed than the predetermined rotating speed. In the third control, the fluid passage controlling unit 972 controls the expansion valve 16 such that the difference in temperature approaches the alternative value.

Description

  The present invention relates generally to a drying device, and more particularly to a drying device using a heat pump as a heat source.

  According to a drying apparatus that dries an object to be dried such as clothes, the temperature of the drying chamber (drying air) increases according to time by the operation of the heating apparatus as a heat source in the initial stage of drying. In particular, in a drying apparatus using a heat pump as a heat source, a certain amount of time is required until the refrigerant circulation is stabilized after the compressor is started.

  As a conventional drying apparatus using a heat pump as a heat source, for example, the drying apparatus described in Japanese Patent No. 4889545 (hereinafter referred to as Patent Document 1) and Japanese Patent No. 4126322 (hereinafter referred to as Patent Document 2) are described. And a clothes dryer described in Japanese Patent Application Laid-Open No. 2009-61163 (hereinafter referred to as Patent Document 3) are known. In the drying apparatus described in Patent Document 1, the drying apparatus described in Patent Document 2, and the clothes dryer described in Patent Document 3, the drying efficiency is improved by the following means, respectively. Yes.

  The drying device described in Patent Literature 1 includes a drying chamber, a heat pump cycle device, an air circulation path, and an external heat source addition device. The heat pump cycle device includes a compressor, a radiator, a decompression expansion valve, and an evaporator. The air circulation path introduces air heated by a radiator into the drying chamber to dry the laundry, dehumidifies the exhaust discharged from the drying chamber with an evaporator, and then heats the air to be heated again with a radiator. Circulate with a blower. The external heat source adding device adds heat of a heat source outside the air circulation path to the evaporator in order to improve the heat pump effect of the heat pump cycle device and improve the air heating effect by the radiator.

  According to the drying apparatus described in Patent Document 1, it is possible to increase the speed of temperature rise of the air circulating in the air circulation path. Therefore, it is possible to promote the evaporation effect of moisture in the laundry stored in the drying room from the beginning of drying.

  In the drying apparatus described in Patent Document 2, the operation time t of the heat pump device is detected by a timer, and the evaporator pressure Pe (() is calculated from the table of the operation time t and the evaporator pressure Pe (= evaporation temperature Te) prepared in advance. = Evaporation temperature Te) is estimated. Then, the suction temperature Ts of the compressor is detected by the first temperature sensor, and the superheat value TSH (TSH = Ts−Te) is estimated from the detected value Ts and the evaporation temperature Te. Next, the estimated superheat value TSH is compared with the target superheat value TC. When the superheat value TSH is larger than the target value TC, the control means performs control to reduce the flow path resistance value of the expansion valve. On the other hand, when the superheat value TSH is smaller than the target value TC, the control means performs control to increase the flow path resistance value of the expansion valve.

  In the drying apparatus described in Patent Document 2, the superheat value can be controlled to a value close to the optimum value at which the heat pump performance is maximized by using the values of the timer and the first temperature sensor. Thus, according to the drying apparatus described in Patent Document 2, the temperature of the drying air can be increased by increasing the superheat value after a predetermined time has elapsed since the start of drying.

  In the clothes dryer described in Patent Document 3, the control device switches the target value of the evaporator inlet / outlet temperature difference SH during the drying operation. Specifically, in the middle to the latter half when the amount of water evaporation from the garment has peaked, the amount of water evaporation from the garment decreases. Therefore, the target value of the evaporator inlet / outlet temperature difference SH is switched to a larger value and compression Reduce the operating frequency of the machine and keep the discharge temperature from the compressor at the same level from the beginning to the middle of the drying operation. In addition, the dehumidifying ability of the evaporator is slightly reduced and the temperature of the evaporator is controlled to be higher.

  According to the clothes dryer described in Patent Document 3, it is possible to reduce the amount of power consumption by reducing the overall energy consumption without reducing the drying speed.

Japanese Patent No. 4889545 Japanese Patent No. 4126322 JP 2009-61163 A

  However, in the drying device described in Patent Document 1, it is necessary to connect the external heat source addition device to the heat pump cycle device in order to improve the drying efficiency, so the structure of the external heat source addition device and the heat pump cycle device The structure is complicated.

  In the drying apparatus described in Patent Document 2, the drying speed is increased by increasing the temperature of the drying air by increasing the superheat value after the operation time t as a predetermined time has elapsed. However, the drying apparatus described in Patent Document 2 does not consider increasing the drying rate by increasing the superheat value in the initial stage of drying.

  According to the clothes dryer described in Patent Document 3, the target value of the evaporator inlet / outlet temperature difference SH is switched from the middle to the latter half of the drying operation. However, the clothes dryer described in Patent Document 3 does not consider increasing the drying speed by increasing the target value of the evaporator inlet / outlet temperature difference SH in the initial stage of drying.

  Therefore, an object of the present invention is to provide a drying apparatus capable of increasing the drying speed in the initial stage of drying using a relatively simple configuration.

  The drying device according to the present invention includes a heat pump device, a drying chamber, a blower, and a control unit. The heat pump device includes a compressor, a condenser, a throttle unit, and an evaporator. The drying chamber stores an object to be dried. The drying chamber is supplied with air heated in the condenser. The blower has a rotating part. The blower blows air heated in the condenser to the drying chamber.

  The control unit includes a first temperature detection unit, a second temperature detection unit, a calculation unit, a flow rate control unit, and a blower control unit. The first temperature detector detects the temperature near the inlet of the evaporator. The second temperature detection unit detects the temperature of the outlet of the evaporator. The calculation unit calculates a difference between the temperature detected by the first temperature detection unit and the temperature detected by the second temperature detection unit. The flow rate control unit controls the throttle unit so that the value of the temperature difference calculated by the calculation unit approaches the target value. The blower control unit controls the rotating unit of the blower. In the drying apparatus according to the present invention, the control unit is any one of the first control, the second control, and the third control from the start of the operation for drying the object to be dried. Execute control.

  The first control is such that the temperature difference value calculated by the calculation unit approaches the substitute value set to a value larger than the target value from the start of the operation for drying the object to be dried. The path control unit controls the throttle unit, and the blower control unit controls the rotation unit so that the rotation unit rotates at a rotation speed lower than a predetermined rotation speed.

  The second control is a control in which the blower control unit controls the rotation unit so that the rotation unit rotates at a rotation speed lower than a predetermined rotation speed from the start of the operation for drying the object to be dried. .

  The third control is such that the temperature difference value calculated by the calculation unit approaches the substitute value set to a value larger than the target value from the start of the operation for drying the object to be dried. The path control unit controls the throttle unit.

  In the drying device according to the present invention, an alternative in which the value of the temperature difference between the temperature detected by the first temperature detection unit and the temperature detected by the second temperature detection unit is set to a value larger than the target value Control that the flow path control unit controls the throttle unit so as to approach the value (that is, control that increases the degree of superheat), or the blower control unit so that the rotating unit rotates at a rotation speed lower than a predetermined rotation speed The control for controlling the rotating unit is started from the start of the operation for drying the object to be dried.

  According to the drying apparatus according to the present invention, the drying rate is increased in the initial stage of drying by increasing the degree of superheat from the start of the operation for drying the object to be dried or by reducing the rotational speed of the blower. Can be raised. That is, according to the drying device according to the present invention, from the start of the operation for drying the object to be dried, the temperature of the drying chamber or the like in which the object to be dried is stored can be quickly raised, The object to be dried can be dried quickly.

  In the drying device according to the present invention, a device for improving the drying efficiency is not connected to the heat pump device, and the structure of the heat pump device and the configuration of the drying device are simple.

  Thus, according to the present invention, it is possible to provide a drying apparatus that can increase the drying speed in the initial stage of drying using a relatively simple configuration.

  In the drying apparatus according to the present invention, preferably, the substitute value is set to a value that matches the target value when a predetermined time has elapsed since the start of the operation for drying the object to be dried. The

  According to this configuration, the drying rate can be increased by increasing the degree of superheat between the start of drying and the elapse of a predetermined time. In addition, after a predetermined time has elapsed, the object to be dried can be quickly dried in the drying chamber where the temperature has been raised.

  In the drying apparatus according to the present invention, preferably, the blower is configured so that the rotating unit rotates at a predetermined number of rotations when a predetermined time has elapsed since the start of the operation for drying the object to be dried. The control unit controls the rotating unit.

  According to this configuration, the drying speed can be increased by suppressing the rotational speed of the blower between the start of drying and the elapse of a predetermined time. In addition, after a predetermined time has elapsed, the object to be dried can be quickly dried in the drying chamber where the temperature has been raised.

  In the drying apparatus according to the present invention, a plurality of operation courses are preferably set. The length of the predetermined time is preferably different depending on a plurality of driving courses.

  According to this configuration, the predetermined time as a condition for ending the first control, the second control, and the third control is different for each driving course. Therefore, the drying speed can be increased within the initial drying time suitable for the operation course. That is, according to this configuration, it is possible to obtain an increase rate of the drying speed suitable for the operation course in the initial stage of drying.

  The drying device according to the invention preferably further comprises a duct having a first part and a second part. A 1st part is a part arrange | positioned between a condenser and a drying chamber so that the air heated in the condenser may be supplied to a drying chamber. A 2nd part is a part arrange | positioned between a drying chamber and an evaporator so that the air utilized for drying to-be-dried target object may flow toward an evaporator in a drying chamber.

  In the drying apparatus according to the present invention, the control unit preferably further includes a third temperature detection unit. A 3rd temperature detection part detects the temperature of the predetermined location of a heat pump apparatus, or the temperature of the predetermined location of a duct. In the drying apparatus according to the present invention, the substitute value is preferably such that the temperature detected by the third temperature detector is equal to or higher than a predetermined temperature after the operation for drying the object to be dried is started. In some cases, it is set to a value that matches the target value.

  According to this configuration, overheating until the temperature detecting unit detects that the temperature at the predetermined location of the heat pump device or the temperature at the predetermined location of the duct reaches a predetermined temperature. The drying rate can be increased by increasing the degree. In addition, after it is detected that the temperature reaches a predetermined temperature or higher, the object to be dried can be quickly dried in the drying chamber where the temperature is increased.

  The drying device according to the invention preferably further comprises a duct having a first part and a second part. A 1st part is a part arrange | positioned between a condenser and a drying chamber so that the air heated in the condenser may be supplied to a drying chamber. A 2nd part is a part arrange | positioned between a drying chamber and an evaporator so that the air utilized for drying to-be-dried target object may flow toward an evaporator in a drying chamber.

  In the drying apparatus according to the present invention, the control unit preferably further includes a third temperature detection unit. A 3rd temperature detection part detects the temperature of the predetermined location of a heat pump apparatus, or the temperature of the predetermined location of a duct. In the drying apparatus according to the present invention, the blower control unit is preferably configured such that the temperature detected by the third temperature detection unit is equal to or higher than a predetermined temperature after the drying of the object to be dried is started. The rotation unit is controlled so that the rotation unit rotates at a predetermined rotation speed.

  According to this configuration, the blower is used until the temperature detection unit detects that the temperature of the predetermined portion of the heat pump device or the temperature of the predetermined portion of the duct reaches a predetermined temperature. The drying speed can be increased by suppressing the number of rotations. In addition, after it is detected that the temperature reaches a predetermined temperature or higher, the object to be dried can be quickly dried in the drying chamber where the temperature is increased.

  In the drying apparatus according to the present invention, a plurality of operation courses are preferably set. The predetermined temperature is preferably different depending on a plurality of driving courses.

  According to this configuration, the predetermined temperature as a condition for ending the first control, the second control, and the third control is different for each operation course. Therefore, the drying speed can be increased from the start of drying until it is detected that the temperature reaches a predetermined temperature suitable for the operation course. That is, according to this configuration, it is possible to obtain an increase rate of the drying speed suitable for the operation course in the initial stage of drying.

  The drying apparatus according to the present invention is preferably a washing and drying apparatus that sequentially performs a washing process, a rinsing process, and a dehydrating process as a process preceding the drying process. Preferably, the compressor has a drive unit. The control unit preferably further includes a compressor control unit that controls the drive unit of the compressor.

  In the drying apparatus according to the present invention, the control unit that executes any one of the first control, the second control, and the third control is preferably performed in a process before the drying process. Then, any one of the fourth control, the fifth control, and the sixth control is executed.

  In the fourth control, the compressor control unit and the blower control unit start the operations of the compressor and the blower, respectively, in the stroke before the drying stroke, and the blower control unit rotates at a lower speed than the rotation speed in the drying stroke. The rotation unit of the blower is rotated by a number, and the compressor control unit rotates the drive unit of the compressor at a lower rotation number than the rotation number in the drying process.

  In the fifth control, the compressor control unit and the blower control unit start the operation of the compressor and the blower, respectively, in the stroke before the drying stroke, and the blower control unit is more than the rotation speed in the drying stroke. This is control for rotating the rotating part of the blower at a low rotational speed.

  The sixth control is a control in which the compressor control unit starts at least the operation of the compressor and rotates the drive unit of the compressor at a rotation speed lower than the rotation speed in the drying stroke in a stroke before the drying stroke. is there.

  In the drying apparatus according to the present invention, the refrigerant can be pre-warmed by starting the operation of the compressor and the operation of the blower, or at least the operation of the compressor, in the step before the drying step. Therefore, the air flow path between the heat pump device and the drying chamber can be preheated from the stroke before the drying stroke. Therefore, the temperature of the drying air can be increased quickly from the start of the drying process. In addition, when any one of the fourth control, the fifth control, and the sixth control whose output is suppressed from the drying process is executed from the process before the drying process, It is possible to suppress the power consumption in the process before the drying process.

  As described above, according to the present invention, it is possible to provide a drying apparatus capable of increasing the drying speed in the initial stage of drying using a relatively simple configuration.

It is the schematic which shows the structure of the washing dryer which is an example of the drying apparatus according to this invention. It is a figure which shows typically the heat pump apparatus and air blower which are controlled by the control part of the drying apparatus according to this invention. It is a block diagram which shows each structure controlled by the control part of the drying apparatus according to this invention. It is a figure which shows the change of the target value of the superheat degree set when the driving | operation which dries a to-be-dried object is performed in the drying apparatus according to this invention. It is a figure which shows the change of the rotation speed of the rotation part of the air blower rotated when the operation | movement which dries a to-be-dried object is performed in the drying apparatus according to this invention. In the drying apparatus according to the present invention, when any one of the first control, the second control, and the third control is executed, the temperature at a predetermined location detected by the third temperature detection unit; It is a graph which shows typically an example of relation with time of drying. It is a figure which shows the example of the rotation speed of the drive part of the compressor in each process performed by the drying apparatus according to this invention. It is a figure which shows the example of the rotation speed of the rotation part of the air blower in each process performed by the drying apparatus according to this invention. It is a figure for demonstrating the state by which operation | movement of the compressor was stopped for the predetermined time in the process before a drying process, Comprising: The rotation speed of the drive part of the compressor in each process performed by the drying apparatus according to this invention It is a figure which shows the example of.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 shows a drum-type washing / drying machine 100 as an example of a drying apparatus according to the present invention. As shown in FIG. 1, the washing / drying machine 100 includes an outer box 1. The outer box 1 forms the outer shape of the main body of the washing / drying machine 100. An operation unit (not shown) for selecting a washing condition and a drying condition is set in the outer box 1.

  The washing / drying machine 100 includes a heat pump device 70, a control unit 90, a blower 9, a water tank 2, a rotating drum 3, and a motor 4. The rotating drum 3 is rotated by the rotation of the motor 4.

  The rotating drum 3 has a cylindrical shape. In the cylinder, one end side (left side in FIG. 1) is opened, and the other end side (right side in FIG. 1) forms a bottom portion 3b having a bottom wall. The rotary drum 3 rotates around a rotation axis that is inclined from the horizontal direction or extends in the horizontal direction. As the material of the rotating drum 3, a stainless steel plate is generally used. A plurality of small holes (not shown) for water supply, drainage and ventilation are formed in the peripheral wall 3a and the bottom 3b of the rotary drum 3. The peripheral wall 3 a is a cylindrical part of the rotary drum 3. The peripheral wall 3a has a substantially cylindrical shape. The peripheral wall 3a extends in a direction parallel to the direction in which the rotation axis extends.

  A plurality of baffles (not shown) are arranged on the peripheral wall 3a. The baffle extends substantially parallel to the rotation axis. Further, the baffle protrudes from the peripheral wall 3a inward in the radial direction of a circle centered on the rotation axis.

  The water tank 2 has a cylindrical shape. In the cylinder, one end side is open and the other end side has a bottom wall. The rotating drum 3 is accommodated in the space inside the water tank 2. A counterweight (not shown) is attached to the lower part of the water tank 2. A plurality of counterweights may be attached to the water tank 2 in order to balance the entire water tank 2. The counterweight may be attached to the upper part of the water tank 2. A liquid balancer (not shown) is attached outside the edge of the opening of the rotary drum 3.

  The rotating drum 3 stores the laundry 5 as an object to be dried. A drive shaft 41 is fixed to the outer surface of the bottom 3 b of the rotary drum 3. The motor 4 is attached to the outer surface of the bottom 2 b of the water tank 2. The motor 4 is connected to the drive shaft 41.

  The laundry dryer 100 is a laundry dryer that uses the heat pump device 70 as a heat source. As shown in FIG. 2, the heat pump device 70 includes a compressor 14, a condenser 15, an evaporator 17, and an expansion valve 16. The compressor 14 compresses the refrigerant and raises the temperature of the refrigerant. The condenser 15 heats the air by exchanging heat between the refrigerant compressed by the compressor 14 and the air. The expansion valve 16 reduces the pressure of the refrigerant that heated the air. The evaporator 17 cools the air by exchanging heat between the decompressed refrigerant and the air. In addition, the heat pump device 70 includes a refrigerant pipe 18. The refrigerant pipe 18 is connected to the compressor 14, the condenser 15, the expansion valve 16, the evaporator 17, and the compressor 14, so that the refrigerant circulates in this order. And

  The condenser 15 and the evaporator 17 are fin tube type heat exchangers, respectively. In the heat pump device 70, drying air flows through the evaporator 17 and the condenser 15 in the order of the evaporator 17 and the condenser 15.

  The compressor 14 has a drive unit 14 a that drives the compressor 14. The drive unit 14 a constitutes a drive source for the compressor 14. A preferred example of the drive unit 14a is an induction motor. The motor as the drive unit 14a may be another electric motor.

  The blower 9 has a rotating part 9a. The rotating part 9a has a configuration including a general electric motor. The driving unit 14a of the compressor 14 and the rotating unit 9a of the blower 9 are each connected to a circuit 89 including a switch (not shown). The control unit 90 controls the switch to switch on and off of the switch included in the circuit 89, so that the rotation start and rotation stop of the drive unit 14a and the rotation start and rotation stop of the rotation unit 9a are performed. Can be switched.

  As shown in FIG. 1, the washing / drying machine 100 includes a drying chamber 32 and a duct 60. A space inside the rotating drum 3 functions as a drying chamber 32. The drying chamber 32 is supplied with air heated in the condenser 15 (see FIG. 2) of the heat pump device 70. The blower 9 sends the heated air to the drying chamber 32.

  The duct 60 includes an exhaust duct 61, a connection portion 62, and an air supply duct 63. The air supply duct 63 is disposed between the condenser 15 and the drying chamber 32 so that the air heated in the condenser 15 is supplied to the drying chamber 32. The exhaust duct 61 is disposed between the drying chamber 32 and the evaporator 17 so that air used for drying the laundry 5 in the drying chamber 32 flows toward the evaporator 17. The connecting portion 62 is a portion of the duct 60 that extends between the condenser 15 and the blower 9. The air used for drying the laundry 5 circulates between the drying chamber 32 and the heat pump device 70 by flowing through the duct 60 along the direction indicated by the arrow.

  As shown in FIG. 3, the control unit 90 includes a detection unit 91, a calculation unit 92, a heating control unit 97, and a blower control unit 96. The detection unit 91 includes a temperature detection unit 911. The heating control unit 97 includes a compressor control unit 971 and a flow rate control unit 972. Further, the control unit 90 includes a determination unit 93, a storage unit 94, and a timer 95.

  The calculation for the control necessary for the operation of the washing / drying machine 100 is performed by the calculation unit 92. The determination about the control necessary for the operation of the washing / drying machine 100 is determined by the determination unit 93. The storage unit 94 stores data and the like necessary for the operation of the washing / drying machine 100.

  The storage unit 94 includes a ROM (Read Only Memory) and a RAM (Random Access Memory). In the washing / drying machine 100, a plurality of operation courses are set as operation courses in the drying process. In the washing and drying machine 100, for example, a course in which a drying process is executed over a standard time (this is referred to as a standard drying course) and a course in which the drying process is executed with a reduced time (as a driving course) This is called a speed drying course) and a course in which a drying process is executed with a relatively large output for a heavy object such as a blanket (this is called a blanket drying course).

  Moreover, the process of the washing / drying machine 100 (see FIG. 1) includes a washing process, a rinsing process, and a dehydration process in order as a process before the drying process. Information on the operation of each member in each stroke is recorded in the storage unit 94 as a program chart, for example. However, the information on the operation of each member in each stroke may be recorded in the storage unit 94 simply in a map shape or a table shape.

  The control unit 90 controls each member including the heat pump device 70 and the rotating unit 9a of the blower 9 according to information recorded in a program or the like. The blower control unit 96 controls the rotating unit 9 a of the blower 9. The compressor control unit 971 controls the drive unit 14 a of the compressor 14. The flow rate control unit 972 controls the expansion valve 16 to adjust the flow rate of the refrigerant flowing through the refrigerant pipe 18 (see FIG. 2). The expansion valve 16 is an example of a throttle part for adjusting the flow rate of the refrigerant.

  When the flow rate control unit 972 controls the expansion valve 16 so as to reduce the opening degree of the expansion valve 16, the resistance in the refrigerant pipe 18 (see FIG. 2) increases and the degree of superheat increases. When the flow rate control unit 972 controls the expansion valve 16 so as to increase the opening degree of the expansion valve 16, the resistance in the refrigerant pipe 18 (see FIG. 2) decreases, and the degree of superheat decreases.

  Further, the rotation of the motor 4 (see FIG. 1) of the rotating drum 3 and the operation of a water supply valve (not shown) that opens and closes the flow path through which the water supplied to the water tank 2 (see FIG. 1) passes, etc. The operation of each member in the dryer 100 is based on the control of the control unit 90.

  As shown in FIG. 2, a temperature sensor 81 is disposed in the vicinity of the inlet of the evaporator 17 in the heat pump device 70. The temperature sensor 81 detects the temperature near the inlet of the evaporator 17. In the heat pump device 70, a temperature sensor 82 is disposed in the vicinity of the outlet of the evaporator 17. The temperature sensor 82 detects the temperature of the outlet of the evaporator 17.

  A temperature sensor 85 is disposed in the air supply duct 63. The temperature sensor 85 detects the temperature of the air flowing through the air supply duct 63 as the temperature of the air flowing from the heat pump device 70 toward the drying chamber 32. A temperature sensor 84 is disposed in the exhaust duct 61. The temperature sensor 84 detects the temperature of the air flowing through the exhaust duct 61. Note that the temperature sensor 85 may be disposed closer to the drying chamber 32 (see FIG. 1) than the blower 9 in the air supply duct 63, and is disposed at an intermediate position between the blower 9 and the drying chamber 32. It may be. The temperature sensor 84 may be disposed closer to the drying chamber 32 than the heat pump device 70 in the exhaust duct 61, or may be disposed at an intermediate position between the heat pump device 70 and the drying chamber 32.

  A temperature sensor 83 is disposed at the discharge portion of the compressor 14. The temperature sensor 83 detects the temperature of the refrigerant. In addition, the discharge part of the compressor 14 is a part of the compressor 14 and is a part located on the side where the refrigerant flows out of the compressor 14 rather than the part on the side where the refrigerant flows into the compressor 14. is there. Alternatively, the discharge part of the compressor 14 may be a part of the refrigerant pipe 18 through which the refrigerant flowing out of the compressor 14 passes, and may be a connection part between the refrigerant pipe 18 and the compressor 14.

  The temperature sensor 86 detects the temperature outside the washing / drying machine 100 (see FIG. 1). The place where the temperature sensor 86 is disposed is not particularly limited, and may be the outer surface of the outer box 1 (see FIG. 1), or may be inside the outer box 1 so as to be accommodated in the outer box 1. Good.

  The temperature detection unit 911 (see FIG. 3) of the detection unit 91 is electronically or electrically connected to the temperature sensors 81, 82, 83, 84, 85, 86. The temperature detection unit 911 includes a temperature in the vicinity of the inlet of the evaporator 17 (see FIG. 2) detected by the temperature sensor 81, a temperature at the outlet of the evaporator 17 detected by the temperature sensor 82, and a compressor detected by the temperature sensor 83. 14 (see FIG. 2), the temperature of the discharge duct 61 (see FIG. 2) detected by the temperature sensor 84, the temperature of the air supply duct 63 (see FIG. 2) detected by the temperature sensor 85, The temperature sensor 86 detects the temperature outside the washing / drying machine 100 (see FIG. 1) (that is, the temperature of the outside air).

  The temperature sensor 81 and the temperature detection unit 911 are examples of a first temperature detection unit, and the temperature sensor 82 and the temperature detection unit 911 are examples of a second temperature detection unit. The temperature sensor 85 and the temperature detection unit 911 are an example of a third temperature detection unit.

  The calculation unit 92 includes a temperature in the vicinity of the inlet of the evaporator 17 (see FIG. 2) detected by the temperature sensor 81 and the temperature detection unit 911, and an evaporator 17 (detected by the temperature sensor 82 and the temperature detection unit 911). The difference from the outlet temperature in FIG. 2) is calculated. The flow rate control unit 972 controls the expansion valve 16 so that the value of the temperature difference (that is, the degree of superheat) calculated by the calculation unit approaches the target value SH shown in FIG.

  The washing / drying machine 100 (see FIG. 1) includes a water level sensor 59 (see FIG. 3) that detects the water level of the water tank 2 (see FIG. 1) in the washing process or the rinsing process. The amount of water absorbed by each laundry 5 varies depending on the quality of the laundry 5. When a certain amount of water is supplied to the water tank 2, the water level of the water tank 2 differs depending on the quality of the laundry 5 accommodated in the rotating drum 3. The detection unit 91 detects the capacity of the laundry 5 based on the water level detected by the water level sensor 59 and the constant amount of water supplied to the water tank 2. The water level sensor 59 and the detection unit 91 are examples of a capacity detection unit.

  Below, operation | movement of each member which heats the air supplied to the drying chamber 32 in order to dry the laundry 5 among the drying processes of the washing dryer 100 is demonstrated using FIGS. 1-3. .

  When the drying process program is started, the control unit 90 rotates the rotating drum 3 by driving the motor 4. In order to heat the air supplied to the drying chamber 32, the control unit 90 drives the driving unit 14 a of the compressor 14 to increase the pressure of the refrigerant and increase the temperature. The control unit 90 rotates the rotating unit 9 a of the blower 9 so that air heated by exchanging heat with the refrigerant is supplied to the drying chamber 32. Air for drying the laundry 5 flows through the duct 60 as indicated by a two-dot chain line arrow shown in FIG. 1 by the air flow generated by the blower 9. The two-dot chain line arrow schematically indicates the direction in which the airflow flows, and does not indicate the speed or scale of the airflow.

  The air flowing into the drying chamber 32 by the air flow generated by the blower 9 obtains moisture from the laundry 5 stirred in the drying chamber 32 and flows through the exhaust duct 61 toward the heat pump device 70. The air in the exhaust duct 61 contains moisture evaporating from the laundry 5. The air flowing into the heat pump device 70 from the exhaust duct 61 is dehumidified below the dew point when passing through the evaporator 17. The dehumidified air is heated in the condenser 15 to be heated and reduced in humidity, and flows again into the rotating drum 3 as drying air. By repeating such an air flow, the laundry 5 is dried.

FIG. 4 shows a change in the target value SH of the degree of superheat set when the laundry dryer 100 (see FIG. 1) is operated to dry the laundry 5 (see FIG. 1). At the start of the operation for drying the laundry 5, as shown in FIG. 4, an alternative value SH ₁ set to a value larger than the target value SH is used.

  It should be noted that the time when the drying process is started or the time when the drying operation is started may be the time when the program for the drying process is started or the time when the compressor 14 is started. It may be the time when rotation of the drive unit 14a is started.

  On the other hand, the point of time when heating of the air is stopped may be, for example, a point of time when the compressor 14 is controlled to stop its operation, and means a point of time when the rotation of the drive unit 14a is stopped.

  Data indicating the correlation between the time elapsed since the start of the drying process, the temperature near the inlet of the evaporator 17 (see FIG. 2), and the temperature of the outlet of the evaporator 17 (see FIG. 2) is stored in advance. It is stored in the section 94 (see FIG. 3). Information on the target value SH of the superheat degree is stored in the storage unit 94 in advance. The flow control unit 972 (see FIG. 3) controls the expansion valve 16 (see FIG. 3) based on the information on the target value SH stored in the storage unit 94. The flow rate control unit 972 calculates the degree of superheat (in other words, the difference between the temperature near the inlet of the evaporator 17 (see FIG. 2) and the temperature at the outlet of the evaporator 17) calculated by the calculation unit 92 (see FIG. 3). The expansion valve 16 is controlled so that the value approaches the target value SH.

  Since the expansion valve 16 is controlled so that the degree of superheat converges in the vicinity of the target value SH, a decrease in the heat exchange performance of the heat pump device 70 can be suppressed, and thus the drying efficiency can be improved.

Flow control unit 972 (see FIG. 3) is, from the time when the drying cycle is initiated, the expansion valve 16 so that the value of the degree of superheating approaches the substitute value SH ₁ which is set to a value larger than the target value SH (FIG. 3 Control).

As shown in FIG. 4, when the time T has elapsed since the start of the drying process, the substitute value SH ₁ is set to a value that matches the target value SH. For example, when it is determined that the time T has elapsed, the flow rate control unit 972 (see FIG. 3) switches the information of the target value SH stored in the storage unit 94 (see FIG. 3) from the alternative value SH _1. The expansion valve 16 (see FIG. 3) is controlled based on the read target value SH.

  FIG. 5 shows a change in the number of rotations of the rotating portion 9a of the blower 9 that rotates when the laundry dryer 100 (see FIG. 1) is operated to dry the laundry 5 (see FIG. 1). At the start of the operation for drying the laundry 5, as shown in FIG. 5, the rotating unit 9a is controlled so that the rotating unit 9a rotates at a rotational speed Rb smaller than a predetermined rotational speed Ra. The rotational speed Ra is the rotational speed of the rotating unit 9a of the blower 9 that is changed from the rotational speed Rb after the time T has elapsed. An example of the numerical value of the rotational speed Ra is 4600 rpm. An example of the numerical value of the rotational speed Rb is 1400 rpm.

  Data indicating the correlation between the time elapsed since the start of the drying process and the target number of rotations of the rotating unit 9a is stored in the storage unit 94 (see FIG. 3) in advance. For example, a chart of the number of rotations of the rotation unit 9a is set in advance in the program. The blower control unit 96 (see FIG. 3), based on the information on the rotation speed and time stored in the storage unit 94, rotates the rotation section 9a so that the rotation section 9a rotates at a rotation speed Rb lower than the rotation speed Ra. To control.

  As shown in FIG. 5, when the time T has elapsed from the start of the drying process, the blower control unit 96 controls the rotating unit 9a so that the rotating unit 9a rotates at the rotation speed Ra. For example, when it is determined that the time T has elapsed, the blower control unit 96 (see FIG. 3) obtains the rotational speed information of the blower 9 stored in the storage unit 94 (see FIG. 3) from the rotational speed Rb. The expansion valve 16 (see FIG. 3) is controlled based on the read information on the rotation speed Ra.

  Note that the length of the time T varies depending on a plurality of driving courses. For example, when the drying process is executed in the course of speed drying, the time T is 8 minutes. If the drying process is carried out on a standard drying course, the time T is longer than 8 minutes. For example, when the drying process is performed in the course of drying the blanket, the time T is 5 minutes.

  The solid line graph shown in FIG. 6 is obtained by the temperature sensor 85 (see FIG. 3) and the temperature detection unit 911 (see FIG. 3) when the first control is executed in the washing / drying machine 100 (see FIG. 1). It is a graph which shows an example of the relationship between the temperature of the air supply duct 63 detected (refer FIG. 2), and the time of drying.

Alternatively, the substitute value SH ₁ (see FIG. 4) is obtained when the temperature of the air flowing through the air supply duct 63 (see FIG. 2) detected by the temperature sensor 85 (see FIG. 2) is detected after the drying operation is started. As shown in FIG. 6, when it is determined that the temperature Te is equal to or higher than the temperature Tp of the outside air detected by the temperature sensor 86 (see FIG. 2), it matches the target value SH (see FIG. 4). Is set to the value to be For example, when it is determined that the temperature of the air flowing through the air supply duct 63 is equal to or higher than the temperature Tp with respect to the temperature Te of the outside air, the flow rate control unit 972 (see FIG. 3) stores the storage unit 94 (see FIG. 3). ) to read switches the information stored target value SH from alternative value SH _1, controls the expansion valve 16 (see FIG. 3) based on the read information of the target value SH.

  In addition, after the drying operation is started, when it is determined that the temperature of the air flowing through the supply air duct 63 is equal to or higher than the temperature Tp with respect to the temperature Te of the outside air, the blower control unit 96 rotates. The rotating unit 9a is controlled so that the rotating unit 9a rotates by a number Ra. The rotation speed Ra of the rotating portion 9a of the blower 9 is changed from the rotation speed Rb after it is determined that the temperature of the air flowing through the air supply duct 63 is equal to or higher than the temperature Tp with respect to the temperature Te of the outside air. The number of revolutions.

The predetermined temperature Tp with respect to the temperature Te of the outside air varies depending on a plurality of operation courses. For example, when the drying process is executed in the course of speed drying, the predetermined temperature Tp with respect to the temperature Te of the outside air is + 30 ° C. That is, when the drying process is started in the course of speed drying, when the temperature Te of the outside air of 20 ° C. is detected, it is determined that the temperature of the air flowing through the air supply duct 63 reaches 50 ° C. In addition, the substitute value SH ₁ is set to a value that matches the target value SH, and the rotation speed Rb of the rotation unit 9a is changed to the rotation speed Ra.

When the drying process is executed in the standard drying course, the predetermined temperature Tp with respect to the temperature Te of the outside air is higher than that in the speed drying course. For example, when the drying process is performed in the course of drying the blanket, the predetermined temperature Tp with respect to the temperature Te of the outside air is + 25 ° C. That is, when the drying process is started in the course of drying the blanket and the temperature Te of the outside air of 20 ° C. is detected, it is determined that the temperature of the air flowing through the air supply duct 63 reaches 45 ° C. In this case, the substitute value SH ₁ is set to a value that matches the target value SH, and the rotation speed Rb of the rotation unit 9a is changed to the rotation speed Ra.

Thus, the control unit 90, the flow control unit 972 controls the expansion valve 16 so that the value of the degree of superheating approaches the substitute value SH ₁ which is set to a value larger than the target value SH, and the rotational speed Ra The first control in which the blower control unit 96 controls the rotating unit 9a so that the rotating unit 9a rotates at a lower rotation speed Rb is started from the start of the operation for drying the laundry 5 (see FIG. 1). Run.

  When the control unit 90 executes the first control, the drying speed is increased in the initial stage of drying including the time T as compared to the broken line graph shown in FIG. 6 as in the solid line graph shown in FIG. Therefore, the temperature of the air supplied to the drying chamber 32 in the initial stage of drying or the temperature of the drying chamber 32 in the initial stage of drying can be increased.

  As will be described later, when the second control or the third control is executed in the washing / drying machine 100 (see FIG. 1), the temperature sensor 85 (see FIG. 3) and the temperature detection unit 911 (see FIG. 3). An example of the relationship between the temperature of the air supply duct 63 (see FIG. 2) detected by the above and the drying time also changes as shown by a solid line graph in FIG.

  On the other hand, the broken line graph shown in FIG. 6 shows the temperature sensor 85 (FIG. 3) when none of the first control, the second control, and the third control is executed in the washing / drying machine 100 (see FIG. 1). 6 is a graph showing an example of the relationship between the temperature of the air supply duct 63 (see FIG. 2) detected by the temperature detection unit 911 (see FIG. 3) and the drying time.

  As described above, the washing and drying machine 100 according to the first embodiment includes the heat pump device 70, the drying chamber 32, the blower 9, and the control unit 90. The heat pump device 70 includes a compressor 14, a condenser 15, an expansion valve 16, and an evaporator 17. The drying chamber 32 stores the laundry 5. The drying chamber 32 is supplied with air heated in the condenser 15. The blower 9 has a rotating part 9a. The blower 9 blows the air heated in the condenser 15 to the drying chamber 32.

  The washing / drying machine 100 includes temperature sensors 81 and 82. The control unit 90 includes a detection unit 91 including a temperature detection unit 911, a calculation unit 92, a flow rate control unit 972, and a blower control unit 96. The temperature sensor 81 and the temperature detection unit 911 detect the temperature near the inlet of the evaporator 17. The temperature sensor 82 and the temperature detector 911 detect the temperature of the outlet of the evaporator 17. The calculation unit 92 calculates the difference between the temperature detected by the temperature sensor 81 and the temperature detection unit 911 and the temperature detected by the temperature sensor 82 and the temperature detection unit 911. The flow rate control unit 972 controls the expansion valve 16 so that the value of the temperature difference calculated by the calculation unit 92 approaches the target value SH. The blower control unit 96 controls the rotating unit 9 a of the blower 9. In the laundry dryer 100, the control unit 90 executes the first control from the start of the operation for drying the laundry 5.

In the first control, the temperature near the inlet of the evaporator 17 to be detected is detected from the start time of the operation for drying the laundry 5 to the substitute value SH ₁ set to a value larger than the target value SH. The flow rate control unit 972 controls the expansion valve 16 so that the value of the difference between the temperature at the outlet of the evaporator 17 (that is, the degree of superheat) approaches, and the rotational speed Rb is lower than the predetermined rotational speed Ra. The blower control unit 96 controls the rotation unit 9a so that the rotation unit 9a rotates.

In washing and drying machine 100, the control flow control unit 972 so that the value of the degree of superheating approaches the substitute value SH ₁ which is set to a value larger than the target value SH controls the expansion valve 16 (i.e., to increase the degree of superheat Control) and the control in which the blower control unit 96 controls the rotating unit 9a so that the rotating unit 9a rotates at a rotational speed Rb lower than the predetermined rotational speed Ra are the start of the operation for drying the laundry 5 Start from the moment.

  According to the washing / drying machine 100, the drying rate is increased at the initial stage of drying by increasing the degree of superheat from the start of the operation for drying the laundry 5 and decreasing the rotational speed of the blower 9. Can do. That is, according to the laundry dryer 100, since the temperature of the drying chamber 32 or the like in which the laundry 5 is stored can be quickly increased from the start of the operation for drying the laundry 5, the laundry 5 It can be dried quickly.

  In the washing / drying machine 100, a device for improving the drying efficiency is not connected to the heat pump device 70, and the structure of the heat pump device 70 and the structure of the washing / drying device 100 are simple.

  By doing in this way, the washing dryer 100 which can raise a drying rate in the drying initial stage using a comparatively simple structure can be provided.

In washing and drying machine 100, when the time T from the driver is started for drying laundry 5 has passed, substitute value SH ₁ is set to a value equal to the target value SH.

  According to this configuration, the drying rate can be increased by increasing the degree of superheat between the start of drying and the elapse of a predetermined time T. In addition, after the time T has elapsed, the laundry 5 can be quickly dried in the drying chamber 32 where the temperature has been increased.

  In the washing / drying machine 100, when the time T has elapsed since the start of the operation for drying the laundry 5, the blower control unit 96 is configured to rotate the rotation unit 9a at a predetermined rotation speed Ra. 9a is controlled.

  According to this configuration, the drying speed can be increased by suppressing the number of rotations of the blower 9 during a predetermined time T after the start of drying. In addition, after the time T has elapsed, the laundry 5 can be quickly dried in the drying chamber 32 where the temperature has been increased.

  A plurality of operation courses are set in the washing / drying machine 100. The length of the predetermined time T varies depending on a plurality of driving courses.

  According to this configuration, the predetermined time as a condition for ending the first control is different for each driving course. Therefore, the drying speed can be increased within the initial drying time suitable for the operation course. That is, according to this configuration, it is possible to obtain an increase rate of the drying speed suitable for the operation course in the initial stage of drying.

  The washing / drying machine 100 includes a duct 60 having an exhaust duct 61 and an air supply duct 63. The exhaust duct 61 is a portion disposed between the condenser 15 and the drying chamber 32 so that the air heated in the condenser 15 is supplied to the drying chamber 32. The air supply duct 63 is a portion disposed between the drying chamber 32 and the evaporator 17 so that air used for drying the laundry 5 in the drying chamber 32 flows toward the evaporator 17.

The washing / drying machine 100 includes temperature sensors 85 and 86. The temperature sensor 85 and the temperature detection unit 911 detect the temperature of the air flowing through the air supply duct 63. The temperature sensor 86 and the temperature detection unit 911 detect the temperature outside the washing / drying machine 100. In the washing / drying machine 100, the substitute value SH ₁ is equal to the temperature sensor 85 and the temperature of the outside air temperature Te detected by the temperature sensor 86 and the temperature detection unit 911 after the drying of the laundry 5 is started. When the temperature of the air detected by the detection unit 911 is equal to or higher than the predetermined temperature Tp, the value is set to a value that matches the target value SH.

  According to this configuration, the temperature of the air flowing through the air supply duct 63 reaches a predetermined temperature Tp that is determined in advance with respect to the temperature Te of the outside air detected by the temperature sensor 86 and the temperature detector 911. The drying rate can be increased by increasing the degree of superheat until the sensor 85 and the temperature detection unit 911 detect it. In addition, after it is detected that the temperature reaches a predetermined temperature or higher, the laundry 5 can be quickly dried in the drying chamber 32 where the temperature has been increased.

  In the washing / drying machine 100, the blower control unit 96 detects the temperature sensor 85 and the temperature with respect to the temperature Te of the outside air detected by the temperature sensor 86 and the temperature detection unit 911 after the drying of the laundry 5 is started. When the temperature of the air flowing through the air supply duct 63 detected by the detection unit 911 is equal to or higher than the predetermined temperature Tp, the rotation unit 9a is controlled such that the rotation unit 9a rotates at a predetermined rotation speed Ra.

  According to this configuration, the temperature of the air flowing through the air supply duct 63 reaches a predetermined temperature Tp that is determined in advance with respect to the temperature Te of the outside air detected by the temperature sensor 86 and the temperature detector 911. The drying speed can be increased by suppressing the number of rotations of the blower 9 until the sensor 85 and the temperature detection unit 911 detect it. In addition, after it is detected that the temperature reaches a predetermined temperature or higher, the laundry 5 can be quickly dried in the drying chamber 32 where the temperature has been increased.

  A plurality of operation courses are set in the washing / drying machine 100. The predetermined temperature Tp with respect to the temperature Te of the outside air detected by the temperature sensor 86 and the temperature detection unit 911 differs depending on a plurality of operation courses.

  According to this configuration, the predetermined temperature as a condition for ending the first control differs for each driving course. Therefore, from the start of drying until the temperature reaches the predetermined temperature Tp suitable for the operation course with respect to the temperature Te of the outside air detected by the temperature sensor 86 and the temperature detection unit 911. The drying speed can be increased. That is, according to this configuration, it is possible to obtain an increase rate of the drying speed suitable for the operation course in the initial stage of drying.

  Note that the control unit 90 is connected to a commercial power supply via a power supply circuit (not shown). Further, an inverter circuit (not shown) is provided between the control unit 90 and each electric member, such as between the control unit 90 and the compressor 14 and between the control unit 90 and the blower 9. . The control unit 90 adjusts the number of rotations of the driving unit 14a and the number of rotations of the rotating unit 9a by controlling the circuit configuration so as to modulate the current, voltage, or any pulse width of the circuit. be able to.

  Note that the detection unit 91 may detect the capacity of the laundry 5 based on, for example, information on the capacity of the laundry 5 input via an operation unit (not shown). The washing / drying machine 100 may include a weight sensor that detects or measures the weight of the laundry 5 accommodated in the rotary drum 3.

  In addition, the position where the control part 90 is arrange | positioned in the washing dryer 100 is not specifically limited. The position of the control unit 90 shown in FIG. 1 is schematically shown. Moreover, the control part 90 should just be comprised so that a desired function can be show | played as mentioned above.

  The temperature sensor 81 may detect the temperature of the refrigerant in the vicinity of the inlet of the evaporator 17. The temperature sensor 82 may detect the temperature of the refrigerant in the vicinity of the outlet of the evaporator 17. The temperature sensor 83 may detect the temperature of the refrigerant pipe 18 in the discharge part of the compressor 14. The temperature sensor 84 may detect the temperature of the exhaust duct 61. The temperature sensor 85 may detect the temperature of the air supply duct 63 or the connecting portion 62. The temperature sensor 85 may be disposed at the connection portion 62 in the duct 60.

  Note that the third temperature detection unit may be configured by the temperature sensor 83 and the temperature detection unit 911, or may be configured by the temperature sensor 84 and the temperature detection unit 911.

  The first control is detected by the temperature sensor 84 and the temperature detection unit 911 with respect to the temperature Te of the outside air detected by the temperature sensor 86 and the temperature detection unit 911 after the drying of the laundry 5 is started. It may be ended when the temperature of the air to be detected or the temperature of the refrigerant pipe 18 detected by the temperature sensor 83 and the temperature detection unit 911 is equal to or higher than a predetermined temperature.

  The rotation speed Rb (see FIG. 5) of the rotation section 9a described above may be different from the rotation speed Rc (see FIG. 7) of the rotation section 9a immediately before the drying process or at the start of the drying process. . For example, the rotation speed Rb may be higher than the rotation speed Rc or the rotation speed Rb may be lower than the rotation speed Rc from the time when the drying process is started.

  The drying device according to the present invention is not limited to a drying device having a washing function, and does not include a washing process and a rinsing process, that is, does not have a function of washing, rinsing, and dehydration. It may be a drying device.

(Second Embodiment)
The washing / drying machine 100 of the second embodiment will be described below. In addition, below, about the structure similar to the washing dryer 100 of 1st Embodiment, a same sign is attached | subjected and description is abbreviate | omitted. Moreover, description is abbreviate | omitted about the control or operation | movement similar to the washing dryer 100 of 1st Embodiment.

  In the washing / drying machine 100 of the second embodiment, the control unit 90 executes the second control from the start of the operation for drying the laundry 5. The second control is a blower control unit so that the rotating unit 9a rotates at a rotational speed Rb lower than a predetermined rotational speed Ra as shown in FIG. 5 from the start of the operation for drying the laundry 5. Reference numeral 96 (see FIG. 3) is control for controlling the rotating portion 9a.

  At the start of the operation for drying the laundry 5, as shown in FIG. 5, the rotating unit 9a is controlled so that the rotating unit 9a rotates at a rotational speed Rb smaller than a predetermined rotational speed Ra.

  The termination condition for the second control is the same as the termination condition for the first control.

  Thus, in the washing / drying machine 100 of the second embodiment, the control unit 90 rotates at the rotation speed Rb lower than the rotation speed Ra from the start of the operation for drying the laundry 5 (see FIG. 1). The blower control unit 96 executes the second control for controlling the rotating unit 9a so that the unit 9a rotates.

  When the control unit 90 executes the second control, the drying speed is increased in the initial stage of drying including the time T as compared to the broken line graph illustrated in FIG. 6, as in the solid line graph illustrated in FIG. 6. Therefore, the temperature of the air supplied to the drying chamber 32 in the initial stage of drying or the temperature of the drying chamber 32 in the initial stage of drying can be increased.

  As described above, in the washing / drying machine 100 according to the second embodiment, the control unit 90 executes the second control from the start of the operation for drying the laundry 5. In the second control, the blower control unit 96 controls the rotating unit 9a so that the rotating unit 9a rotates at a rotation speed Rb lower than the predetermined rotation speed Ra from the start of the operation for drying the laundry 5. It is control to do.

  In the washing / drying machine 100 of the second embodiment, the second control in which the blower control unit 96 controls the rotating unit 9a so that the rotating unit 9a rotates at the rotation speed Rb lower than the predetermined rotation speed Ra is the laundry 5 is started from the start of operation for drying 5.

  According to the washing / drying machine 100 of the second embodiment, the drying speed can be increased in the initial drying stage by reducing the rotational speed of the blower 9 from the start of the operation for drying the laundry 5. That is, according to the washing / drying machine 100 of the second embodiment, the temperature of the drying chamber 32 or the like in which the laundry 5 is stored can be quickly raised from the start of the operation for drying the laundry 5. The laundry 5 can be dried quickly.

  Further, in the washing and drying machine 100 of the second embodiment, a device for improving the drying efficiency is not connected to the heat pump device 70, and the structure of the heat pump device 70 and the configuration of the washing and drying device 100 are simple. is there.

  By doing in this way, the washing dryer 100 which can raise a drying rate in the drying initial stage using a comparatively simple structure can be provided.

(Third embodiment)
The washing / drying machine 100 of the third embodiment will be described below. In addition, below, about the structure similar to the washing dryer 100 of 1st Embodiment, a same sign is attached | subjected and description is abbreviate | omitted. Moreover, description is abbreviate | omitted about the control or operation | movement similar to the washing dryer 100 of 1st Embodiment.

In the washing / drying machine 100 of the third embodiment, the control unit 90 executes the third control from the start of the operation for drying the laundry 5. The third control is a laundry 5 from the start of the operation for drying, the substitute value SH ₁ which is set to a value larger than the target value SH, as the value of the superheat degree is calculated by the arithmetic unit approaches The flow rate control unit 972 controls the expansion valve 16.

At the start of the operation for drying the laundry 5, as shown in FIG. 4, an alternative value SH ₁ set to a value larger than the target value SH is used. The termination condition for the third control is the same as the termination condition for the first control.

As described above, in the washing / drying machine 100 of the second embodiment, the control unit 90 is set to a value larger than the target value SH from the start of the operation for drying the laundry 5 (see FIG. 1). the substitute value SH _1, the flow control unit 972 so as to approach the value of the superheating degree calculated by the arithmetic unit 92 executes the third control for controlling the expansion valve 16.

  When the control unit 90 executes the third control, the drying speed is increased in the initial stage of drying including the time T as compared to the broken line graph shown in FIG. 6 as in the solid line graph shown in FIG. Therefore, the temperature of the air supplied to the drying chamber 32 in the initial stage of drying or the temperature of the drying chamber 32 in the initial stage of drying can be increased.

As described above, in the washing / drying machine 100 according to the third embodiment, the control unit 90 executes the third control from the start of the operation for drying the laundry 5. In the third control, the value of the temperature difference calculated by the calculation unit 92 approaches the alternative value SH ₁ set to a value larger than the target value SH from the start of the operation for drying the laundry 5. In this way, the flow rate control unit 972 controls the expansion valve 16.

In the washer / dryer 100 of the third embodiment, the flow rate control unit 972 has the expansion valve so that the value of the temperature difference calculated by the calculation unit 92 approaches the substitute value SH ₁ set to a value larger than the target value SH. The third control for controlling 16 is started from the start of the operation for drying the laundry 5.

  According to the washing / drying machine 100 of the third embodiment, the drying rate can be increased in the initial stage of drying by increasing the degree of superheat from the start of the operation for drying the laundry 5. That is, according to the laundry dryer 100 of the third embodiment, the temperature of the drying chamber 32 or the like in which the laundry 5 is stored can be quickly raised from the start of the operation for drying the laundry 5. The laundry 5 can be dried quickly.

  Further, in the washing / drying machine 100 of the third embodiment, a device for improving the drying efficiency is not connected to the heat pump device 70, and the structure of the heat pump device 70 and the configuration of the washing / drying device 100 are simple. is there.

  By doing in this way, the washing dryer 100 which can raise a drying rate in the drying initial stage using a comparatively simple structure can be provided.

(Fourth embodiment)
The washing / drying machine 100 of the fourth embodiment will be described below. In addition, below, about the structure similar to the washing-drying machine 100 of 1st Embodiment-3rd Embodiment, a same sign is attached | subjected and description is abbreviate | omitted. Moreover, description is abbreviate | omitted about the control or operation | movement similar to the washing dryer 100 of 1st Embodiment-3rd Embodiment.

  The washing / drying machine 100 according to the fourth embodiment sequentially performs a washing process, a rinsing process, and a dehydrating process as a process preceding the drying process. In the washing / drying machine 100 of the fourth embodiment, any one of the above-described first control, second control, and third control is executed.

  Next, with reference to FIG. 1 and FIG. 2, an operation including a stroke before the drying stroke performed by the washing / drying machine 100 will be described.

  First, the user opens a door (not shown), puts the laundry 5 into the rotating drum 3, and then closes the door. The detergent used for washing is put in a detergent case (not shown). If necessary, the user puts a finish into the detergent case. The user may add the finishing agent during the washing process or rinsing process.

  Next, the user operates an operation unit (not shown) installed in the outer box 1 to select a washing condition and a drying condition. Based on the operation of the operation unit by the user, the operation unit transmits a control signal to the control unit 90 (see FIG. 2), whereby the control unit 90 controls each member of the washing / drying machine 100. For example, a washing process, a rinsing process, and a dehydrating process are sequentially performed according to the washing condition and the drying condition selected by the user. The detergent case and the operation unit (both not shown) are installed inside the outer box 1.

  In the washing / drying machine 100, a plurality of operation courses are set as operation courses in the process before the drying process. The washing / drying machine 100 has, as an operation course, for example, a course in which a washing process and a rinsing process are performed over a standard time, and a course in which the washing process and the rinsing process are performed with a reduced time (this is a speed course And a course in which a washing process and a rinsing process are performed with a relatively large output on a heavy object such as a blanket (this is called a blanket washing course). The user can select these driving courses by operating an operation unit (not shown).

  A control part (refer FIG. 3) controls each member containing the heat pump apparatus 70 and the rotation part 9a of the air blower 9 according to the information recorded in the program etc. for performing the process before a drying process.

  First, the washing process will be described. When the user presses the start button of the operation unit, the control unit 90 controls the door and the water supply valve (both not shown). Thereby, while a door is locked, tap water is supplied to the water tank 2 by opening a water supply valve. At this time, water in which the detergent contained in the detergent case is mixed is supplied to the water tank 2.

  After the water is supplied to the water tank 2, the rotating drum 3 is rotated by the motor 4 according to the rotation chart for the washing process. In the washing / drying machine 100, the rotary drum 3 rotates at, for example, about 50 rpm. Regarding the rotation chart of the rotating drum 3, the rotation speed, the rotation period, the inversion period, and the like are different for each of the washing process, the rinsing process, and the dehydration process, or depending on the type of laundry 5 or the operation course. A plurality of rotation charts are preset. The rotation chart is programmed to be selected by the user or automatically.

  As will be described later, the control unit 90 starts the operation of the compressor 14 and the operation of the blower 9 in the washing process, and rotates the rotation unit 9a of the blower 9 at a rotation speed lower than the rotation speed in the drying process. And the drive part 14a of the compressor 14 is rotated at the rotation speed lower than the rotation speed in a drying process. Note that the rotation chart of the drive unit 14a and the rotation chart of the rotation unit 9a are also set in advance in the program.

  When the rotation of the motor 4 in the washing process is completed according to the program, the water remaining in the water tank 2 is discharged out of the outer box 1 through a drainage section (not shown). After the drainage is completed, an intermediate dehydration process is performed. In this process, the rotary drum 3 rotates at a high speed according to the rotation chart for the intermediate dehydration process. In the intermediate dehydration process, the water contained in the laundry 5 is discharged from the rotary drum 3 to the water tank 2 through a small hole (not shown) by the centrifugal force generated by the rotation of the rotary drum 3. The water discharged into the water tank 2 flows downward along the inner wall surface of the water tank 2 and then is discharged out of the outer box 1 through the drainage section.

  When the intermediate dewatering process ends, the program moves from the intermediate dewatering process to the rinsing process. When the program shifts to the rinsing process, tap water is supplied to the aquarium 2 by opening the water supply valve. When a water level sensor (not shown) detects that water has been supplied to the water tank 2 to a predetermined water level, the water supply valve is closed. The controller 90 controls the circulation pump so that the circulation pump (not shown) is driven for a predetermined time after the water supply valve is closed. By the operation of the circulation pump, water circulates between the water tank 2 and the duct through a duct connecting the water tank 2 and the circulation pump. When the predetermined time has elapsed, the control unit 90 stops driving the circulation pump. Thereafter, the rotating drum 3 rotates according to the rotation chart for the rinsing process. Note that the circulating pump may be driven also when the rotary drum 3 rotates.

  After the intermediate dehydration process and the rinsing process are repeated a plurality of times, the program shifts from the rinsing process to the final rinsing process. When the program shifts to the final rinsing process, the water supply valve is opened, so that water containing the soft finish is supplied to the water tank 2.

  After a predetermined number of rinsing strokes, the program moves to the dewatering stroke. When the final rinsing process is completed, the water used for rinsing is discharged from the water tank 2 to the outside of the outer box 1. After the drainage is completed, the final dehydration process is performed so that the rotary drum 3 rotates at a high speed of, for example, 1000 rpm, according to the rotation chart for the final dehydration process. In the final dewatering process, as in the intermediate dewatering process, the moisture contained in the laundry 5 is discharged to the water tank 2 through a small hole (not shown) by the centrifugal force generated by the rotation of the rotating drum 3. After a predetermined time has elapsed since the start of the dehydration process, the control unit 90 cuts off the power to the motor 4 and then performs a stop process.

  When the dehydration process is completed, the program shifts from the dehydration process to the drying process. Even when the program shifts to the drying process, the control unit 90 rotates the rotating drum 3 by driving the motor 4.

  In order to heat the air supplied to the drying chamber 32, the control unit 90 drives the driving unit 14 a of the compressor 14 to increase the pressure of the refrigerant and increase the temperature. The control unit 90 rotates the rotating unit 9 a of the blower 9 so that air heated by exchanging heat with the refrigerant is supplied to the drying chamber 32.

  As the fourth control, the control unit 90 starts the operation of the compressor 14 and the operation of the blower 9 in the washing process, and rotates the rotation unit 9a of the blower 9 at a rotation speed lower than the rotation speed in the drying process. And the drive part 14a of the compressor 14 is rotated with the rotation speed lower than the rotation speed in a drying process. Note that the rotation chart of the drive unit 14a and the rotation chart of the rotation unit 9a are also set in advance in the program.

  The rotational speed Rc shown in FIG. 7 is the rotational speed of the drive unit 14a before the transition from the washing process to the drying process. The number of rotations Rc shown in FIG. 8 is the number of rotations of the rotating unit 9a before the transition from the washing process to the drying process. However, the rotational speed Ra of the rotating part 9a in the drying process shown in FIG. 8 is the rotational speed of the rotating part 9a of the blower 9 after the time T shown in FIG. 5 has elapsed.

  The rotation speed Rb (see FIG. 5) of the rotation section 9a described above is the same as the rotation speed Rc of the rotation section 9a immediately before the drying stroke or at the start of the drying stroke.

  As described above, the rotational speed Ra of the drive unit 14a in the drying process is, for example, 5000 rpm. Moreover, normal rotation speed Ra of the rotation part 9a in a drying process is 4600 rpm, for example. On the other hand, the rotational speed Rc of the drive unit 14a before shifting from the washing process to the drying process is, for example, 4000 rpm. The rotational speed Rc of the rotating part 9a before shifting from the washing process to the drying process is, for example, 1400 rpm. These rotational speeds Ra and Rc are set in advance in a program for the drying process and a program before the transition from the washing process to the drying process, respectively.

  In the drying process, the driving unit 14a rotates at 5000 rpm and the rotating unit 9a rotates at 4600 rpm, so that the air passing through the condenser 15 inside the heat pump device 70 is heated and then heated. The air (drying air) is supplied to the drying chamber 32.

  Even when water is stored in the aquarium 2 in the process before the transition to the drying process, the rotational speed of the rotating portion 9a of the blower 9 is kept low. It is possible to prevent the water in the water tank 2 from flowing into the duct 60 together with the air flowing through the air.

  In the washing / drying machine 100, as shown in FIG. 8, when the rotation of the drive unit 14a is stopped in the process before the drying process, the time Ts elapses from the time when the rotation of the drive unit 14a is stopped. Until then, the rotation of the drive unit 14a is stopped. As described above, when the operation of the compressor 14 (see FIG. 3) is stopped in the stroke before the drying stroke, the control unit 90 (see FIG. 3) takes time from the time when the operation of the compressor 14 is stopped. When Ts elapses, the operation of the compressor 14 is resumed. Specifically, when the determination unit 93 (see FIG. 3) determines that the temperature of the discharge unit of the compressor 14 detected by the temperature detection unit 911 (see FIG. 3) is equal to or higher than a predetermined temperature, The compressor control unit 971 (see FIG. 3) temporarily stops the rotation of the drive unit 14a.

  Information of the time Ts as a threshold for resuming rotation is stored in the storage unit 94 (see FIG. 3). The time Ts is measured by a timer 95 (see FIG. 3).

  A predetermined temperature value set as a threshold value for stopping or resuming the rotation of the drive unit 14 a is stored in the storage unit 94. Note that the temperature determined for stopping or restarting the rotation of the drive unit 14a is not limited to the temperature detected by the temperature sensor 83, and any one of the temperature sensors 81, 82, 84, 85, and 86 is used. The temperature detected by may be used.

  Note that the control unit 90 can execute any one of the following fifth control and sixth control separately from the above-described fourth control. That is, the control unit 90 that executes any one of the first control, the second control, and the third control described above includes the fourth control, the fifth control, and the sixth control. Any one of the controls is further executed.

  In the fifth control, the control unit 90 starts the operation of the compressor 14 and the operation of the blower 9 in the washing process as the process before the drying process, and the rotational speed is lower than the rotational speed in the drying process. In this control, the control unit 90 rotates the rotating unit 9a of the blower 9. The sixth control controls at least the operation of the compressor 14 (that is, the operation of the compressor 14 and the operation of the blower 9, or the operation of only the compressor 14) in the washing step as the step before the drying step. This is a control that the controller 90 starts and the controller 90 rotates the drive unit 14a of the compressor 14 at a rotation speed lower than the rotation speed in the drying process.

  Numerical examples of the rotation speed Rc of the drive unit 14a or the rotation unit 9a in the fifth control and the sixth control are the same as in the fourth control. The rotational speed Rc of the drive unit 14a before shifting to the drying process is, for example, 4000 rpm. The rotational speed Rc of the rotating part 9a before shifting to the drying process is, for example, 1400 rpm.

  Note that the control unit 90 that executes any one of the first control, the second control, and the third control described above includes the fourth control, the fifth control, and the sixth control. Any one of the controls may be started from the rinsing process. Numerical examples of the rotation speed Rc of the drive unit 14a or the rotation unit 9a in the fourth control, the fifth control, and the sixth control that are started from the rinsing process are the same as the examples that are started from the washing process.

  In addition, the control unit 90 that executes any one of the first control, the second control, and the third control described above depends on the capacity of the laundry 5 detected by the detection unit 91. , The rotation speed of the drive unit 14a of the compressor 14 in the fourth control, the rotation speed of the rotation unit 9a of the blower 9, the rotation speed of the rotation unit 9a of the blower 9 in the fifth control, and the compression in the sixth control The rotational speed of the drive unit 14a of the machine 14 is changed.

  Table 1 shows an example of the number of rotations of the drive unit 14a of the compressor 14 or the number of rotations of the rotation unit 9a of the blower 9 (both see FIG. 1) in each process classified by the capacity of the laundry 5 (see FIG. 1). It is a table | surface which shows.

  The rotational speeds Rc1, Rc2, and Rc3 shown in Table 1 are the rotational speeds of the drive unit 14a and the rotational speed of the rotary unit 9a in the process before the transition to the drying process set according to the capacity of the laundry 5, respectively. . The rotational speed Rc1 of the drive unit 14a is set so that the drive unit 14a rotates at, for example, 4000 rpm when the capacity is 4 kg or more and less than 6 kg. The rotational speed Rc2 of the drive unit 14a is set so that the drive unit 14a rotates at, for example, 3500 rpm when the capacity is 2 kg or more and less than 4 kg. The rotational speed Rc3 of the drive unit 14a is set so that the drive unit 14a rotates at, for example, 3000 rpm when the capacity is less than 2 kg.

  Further, the rotational speed Rc1 of the rotating part 9a is set so that the rotating part 9a rotates at, for example, 1400 rpm when the capacity is 4 kg or more and less than 6 kg. The rotation speed Rc2 of the rotation unit 9a is set so that the rotation unit 9a rotates at, for example, 1300 rpm when the capacity is 2 kg or more and less than 4 kg. The rotational speed Rc3 of the drive unit 14a is set so that the rotating unit 9a rotates at, for example, 1200 rpm when the capacity is less than 2 kg.

  On the other hand, the rotation speed Ra of the drive unit 14a and the rotation speed Ra of the rotation unit 9a in the drying process are set uniformly without changing according to the capacity. As described above, the rotational speed Ra of the driving unit 14a and the rotational speed Ra of the rotating unit 9a in the drying process are 5000 rpm and 4600 rpm, respectively.

  When the sixth control is executed, the rotating unit 9a is stopped in the stroke before the drying stroke (that is, the rotational speeds Rc1, Rc2, and Rc3 of the rotating portion 9a are substantially zero (zero). ) Is preferred. When the sixth control is executed, the rotation speeds Rc1, Rc2, and Rc3 of the rotation unit 9a in the process before the drying process are the rotation speeds Rb of the rotation unit 9a set at the start of the drying process. May be substantially the same. On the other hand, when the fifth control is executed, the rotational speeds Rc1, Rc2, and Rc3 of the drive unit 14a in the process before the drying process are substantially the same as the rotational speed Ra of the drive unit 14a in the drying process. It is preferable.

  Alternatively, the control unit 90, depending on the operation course, the rotation number of the drive unit 14a of the compressor 14 in the fourth control and the rotation number of the rotation unit 9a of the blower 9, and the rotation unit of the blower 9 in the fifth control The rotational speed of 9a and the rotational speed of the drive unit 14a of the compressor 14 in the sixth control are changed.

  Table 2 is a table showing an example of the number of rotations of the drive unit 14a of the compressor 14 or the number of rotations of the rotation unit 9a of the blower 9 in each process classified by the operation course of the washing / drying machine 100 (see FIG. 1). .

  The rotational speeds Rc4 and Rc5 shown in Table 2 are the rotational speeds of the drive unit 14a and the rotational speed of the rotary unit 9a in the process before the transition to the drying process set in accordance with the operation course. The rotational speed Rc4 of the drive unit 14a is set so that the drive unit 14a rotates at, for example, 4000 rpm when the standard course is selected. The rotational speed Rc5 of the drive unit 14a is set so that the drive unit 14a rotates at, for example, 4200 rpm when the speed course (course for time reduction) is selected.

  Further, the rotation speed Rc4 of the drive unit 14a is set so that the rotation unit 9a rotates at, for example, 1300 rpm when the standard course is selected. The rotational speed Rc5 of the rotating part 9a is set so that the rotating part 9a rotates at, for example, 1400 rpm when the speed course (time shortening course) is selected.

  On the other hand, the rotation speed Ra of the drive unit 14a and the rotation speed Ra of the rotation unit 9a in the drying process are set uniformly without changing according to the operation course.

  When the sixth control is executed, the rotation unit 9a is stopped in the stroke before the drying stroke (that is, the rotation speeds Rc4 and Rc5 of the rotation portion 9a are substantially zero (zero)). Is preferred). When the sixth control is executed, the rotational speeds Rc4 and Rc5 of the rotating part 9a in the process before the drying process are substantially the same as the rotational speed Rb of the rotating part 9a set at the start of the drying process. It may be the same. When the fifth control is executed, it is preferable that the rotational speeds Rc4 and Rc5 of the drive unit 14a in the process before the drying process are substantially the same as the rotational speed Ra of the drive unit 14a in the drying process.

  As described above, the washing / drying machine 100 according to the fourth embodiment is a washing / drying apparatus that sequentially performs the washing process, the rinsing process, and the dehydration process as the processes before the drying process. The compressor 14 has a drive unit 14a. The control unit 90 includes a compressor control unit 971 that controls the drive unit 14 a of the compressor 14.

  In the washing / drying machine 100, the control unit 90 that executes any one of the first control, the second control, and the third control performs the fourth control in the process before the drying process. , 5th control, and 6th control are performed.

  In the fourth control, the compressor control unit 971 and the blower control unit 96 start the operations of the compressor 14 and the blower 9, respectively, in the stroke before the drying stroke, and the blower control unit 96 rotates in the drying stroke. The rotation unit 9a of the blower 9 is rotated at a rotation speed Rc lower than the number Ra, and the compressor control unit 971 rotates the drive unit 14a of the compressor 14 at a rotation speed Rc lower than the rotation speed Ra in the drying process. Control.

  In the fifth control, the compressor control unit 971 and the blower control unit 96 start the operations of the compressor 14 and the blower 9, respectively, and the blower control unit 96 is operated in the drying step before the drying step. In this control, the rotating portion 9a of the blower 9 is rotated at a rotational speed Rc lower than the rotational speed Ra.

  In the sixth control, in the stroke before the drying stroke, the compressor control section 971 starts the operation of at least the compressor 14 and drives the compressor 14 at the rotation speed Rc lower than the rotation speed Ra in the drying stroke. This is control for rotating 14a.

  In the washing / drying machine 100, the refrigerant can be pre-warmed by starting the operation of the compressor 14 and the operation of the blower 9, or at least the operation of the compressor 14 in the process before the drying process. Therefore, the air flow path such as between the heat pump device 70 and the drying chamber 32 can be preheated from the stroke before the drying stroke. Therefore, the temperature of the drying air can be increased quickly from the start of the drying process. In addition, when any one of the fourth control, the fifth control, and the sixth control whose output is suppressed from the drying process is executed from the process before the drying process, It is possible to suppress the power consumption in the process before the drying process.

  The embodiment disclosed above should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above embodiments but by the scope of claims, and includes all modifications and variations within the meaning and scope equivalent to the scope of claims.

5: Laundry, 9: Blower, 9a: Rotating unit, 14: Compressor, 14a: Driving unit, 15: Condenser, 16: Expansion valve, 17: Evaporator, 32: Drying chamber, 60: Duct, 61: Exhaust duct, 63: Air supply duct, 70: Heat pump device, 81, 82, 83, 84, 85, 86: Temperature sensor, 90: Control unit, 91: Detection unit, 911: Temperature detection unit, 92: Calculation unit, 96: blower control unit, 97: heating control unit, 971: compressor control unit, 972: flow rate control unit, 100: washing dryer

Claims (8)

A heat pump device including a compressor, a condenser, a throttle, and an evaporator;
A drying chamber for storing an object to be dried and supplied with air heated in the condenser;
A blower that has a rotating part and blows air heated in the condenser to the drying chamber;
A first temperature detector for detecting the temperature in the vicinity of the inlet of the evaporator, a second temperature detector for detecting the temperature of the outlet of the evaporator, and a temperature detected by the first temperature detector. A calculation unit that calculates a difference from the temperature detected by the second temperature detection unit, and a flow rate control unit that controls the throttle unit so that the value of the temperature difference calculated by the calculation unit approaches a target value; A control unit having a blower control unit that controls the rotating unit of the blower,
The flow path control unit controls the throttle unit so that the value of the temperature difference approaches an alternative value set to a value larger than the target value, and the rotation is performed at a rotation speed lower than a predetermined rotation speed. The blower control unit controls the rotating unit so that the rotating unit rotates at a rotational speed lower than a predetermined rotational speed. Among the second control to be controlled and the third control in which the flow path control unit controls the throttle unit so that the value of the temperature difference approaches the substitute value set to a value larger than the target value The control unit executes any one of the control from the start of the operation for drying the object to be dried.
Drying equipment.   The drying apparatus according to claim 1, wherein the alternative value is set to a value that matches the target value when a predetermined time has elapsed since the operation for drying the object to be dried was started.   When the predetermined time has elapsed since the operation for drying the object to be dried has started, the blower control unit controls the rotating unit such that the rotating unit rotates at the predetermined number of rotations. The drying apparatus according to claim 1 or 2. A plurality of driving courses are set in the drying device,
The length of the predetermined time varies depending on the plurality of driving courses,
The drying apparatus according to claim 2 or claim 3. A first portion disposed between the condenser and the drying chamber so that air heated in the condenser is supplied to the drying chamber, and used for drying an object to be dried in the drying chamber. Further comprising a duct having a second portion disposed between the drying chamber and the evaporator such that the conditioned air flows toward the evaporator;
The control unit further includes a third temperature detection unit that detects the temperature of the predetermined part of the heat pump device or the temperature of the predetermined part of the duct,
After the operation for drying the object to be dried is started, when the temperature detected by the third temperature detection unit is equal to or higher than a predetermined temperature, the alternative value matches the target value. The drying apparatus according to any one of claims 1 to 3, wherein the drying apparatus is set to a value. A first portion disposed between the condenser and the drying chamber so that air heated in the condenser is supplied to the drying chamber, and used for drying an object to be dried in the drying chamber. Further comprising a duct having a second portion disposed between the drying chamber and the evaporator such that the conditioned air flows toward the evaporator;
The control unit further includes a third temperature detection unit that detects the temperature of the predetermined part of the heat pump device or the temperature of the predetermined part of the duct,
After the operation for drying the object to be dried is started, when the temperature detected by the third temperature detection unit is equal to or higher than a predetermined temperature, the rotation unit rotates at the predetermined rotation speed. So that the blower control unit controls the rotating unit,
The drying apparatus according to any one of claims 1 to 4. A plurality of driving courses are set in the drying device,
The predetermined temperature differs according to a plurality of the driving courses,
The drying apparatus according to claim 5 or 6. The drying apparatus is a washing and drying apparatus that sequentially performs a washing process, a rinsing process, and a dehydrating process as a process preceding the drying process,
The compressor has a drive unit,
The control unit further includes a compressor control unit that controls the drive unit of the compressor,
In the process before the drying process, the compressor control unit and the blower control unit start operation of the compressor and the blower, respectively, and the fan control unit rotates at a lower speed than the number of rotations in the drying process. A fourth control for rotating the rotation unit of the blower by a number, and the compressor control unit rotating the driving unit of the compressor at a lower rotation number than the rotation number in the drying process; and the compression The blower control unit and the blower control unit start the operations of the compressor and the blower, respectively, and the blower control unit turns the rotating unit of the blower at a rotation speed lower than the rotation speed in the drying process. A fifth control to rotate, and the compressor control unit starts at least the operation of the compressor and rotates the drive unit of the compressor at a rotational speed lower than the rotational speed in the drying process. 6 wherein the control unit either one of the control of the control to be executed, drying apparatus according to any one of claims 1 to 7 for.

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