JP4442367B2 - Clothes dryer - Google Patents

Description

  The present invention relates to a clothes dryer such as a laundry dryer incorporating a drying function in a washing machine or an electric dryer configured exclusively for drying.

  The clothes dryer rotates a clothing storage tub containing moisture-containing clothing, etc., exhausts the air in the clothing storage tub while stirring the clothing, etc., dehumidifies it by heat exchange, then heats it with a heater and re-clothes the clothing. Clothes etc. are dried by repeating the air circulation which blows in the storage tank for a predetermined time. In such a clothes dryer, a temperature detection function is provided in order to detect the degree of drying of the clothes and to detect an abnormal operation.

For example, if a first temperature sensor that detects the temperature of the air exhausted from the clothing storage tank and a second temperature sensor that detects the temperature of the air immediately before being heated by the heater are disposed, The temperature detected by the first temperature sensor rapidly increases when the drying progresses, and the temperature detected by the second temperature sensor tends to gradually decrease when the drying progresses. The difference in temperature detected by the temperature sensor is obtained, and the end of drying can be detected from the rate of temperature change. In addition, when the air is not blown to the heater due to the abnormality of the blower fan, the temperature detected by the second temperature sensor rises, so that the operation can be stopped by detecting overheating associated with the abnormal airflow (for example, , See Patent Document 1).
JP-A-2-309998

  However, in such a conventional configuration, the value of the temperature change rate for detecting the completion of drying is set to a predetermined value, so that the user can change the clothing depending on the use environment, the type of clothing, etc. and the user's preference. It was difficult to change the drying finish.

  SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and makes it possible to change the finish of drying of clothes according to the use environment, the type of clothes, etc. and the user's preference, and provides a user-friendly clothes dryer. It is intended to provide.

In order to achieve the above object, the present invention dehumidifies the moisture contained in the air exhausted from the clothing storage tank containing the object to be dried by the dehumidifying means, then heats it by the heating means and blows it again into the clothing storage tank. A refrigerant temperature detecting means for detecting the temperature of the refrigerant after the heat exchange is performed by supplying the heat from the refrigerant supply means to the heat exchanger constituting the dehumidifying means, and the heating means And a control means for controlling the heating means, the blower means and the refrigerant supply means. The control means is detected by the refrigerant temperature detection means . The temperature difference between the blown air temperature and the refrigerant temperature when the amount of change in the refrigerant temperature within a predetermined time becomes equal to or less than the predetermined change amount, and the temperature difference between the blown air temperature and the refrigerant temperature is the reference value. On the other hand, in a clothes dryer in which the heating means is controlled to be turned off and the process proceeds from the drying process to the air cooling process when the predetermined value or more is reached, the predetermined value can be changed according to a plurality of drying degrees, The clothes dryer is characterized in that the difference between the predetermined values of the degree of drying is increased as the amount of water increases and as the ambient temperature decreases .

Thus, to change the finishing degree of drying of the clothes, the set degree of drying the drying completion condition of the clothes can be accurately determined in accordance with the Runode, use environment, the type of clothes or a user's preference Drying suitable for

Clothes dryer of the present invention can change the finishing degree of drying of the clothes, Runode can accurately determine the end of the drying state of the clothes and the like in accordance with the set degree of drying, the use environment, the type of clothes And can be dried according to the user's preference.

The first invention relates to air blowing means and air for dehumidifying the moisture contained in the air exhausted from the clothing storage tank containing the object to be dried by the dehumidifying means and then heating it by the heating means and blowing it again into the clothing storage tank. Refrigerant temperature detecting means for detecting the temperature of the refrigerant after heat exchange is performed by supplying heat from the refrigerant supply means to the heat exchanger constituting the dehumidifying means, and air flow just before reaching the heating means A blowing air temperature detecting means for detecting the temperature of the air; and a control means for controlling the heating means, the blowing means and the refrigerant supply means, wherein the control means has a predetermined refrigerant temperature detected by the refrigerant temperature detecting means . The temperature difference between the blown air temperature and the refrigerant temperature when the amount of change in time is equal to or less than the predetermined change amount is a reference value, and the temperature difference between the blown air temperature and the refrigerant temperature is a predetermined value or more with respect to the reference value. In In the clothes dryer in which the heating means is controlled to be turned off to shift from the drying process to the air cooling process, the predetermined value can be changed according to a plurality of drying degrees, and the amount of clothes increases. , as yet ambient temperature is lowered, by the clothes dryer, characterized in that to increase the difference between the predetermined value of the degree of drying each other, regardless of the amount or operating conditions, such as clothing, the dry end state of the clothes it is possible to accurately determine, to change the finishing degree of drying of the clothes, it is possible to accurately determine the completion of drying state of the clothes or the like according to the set drying degree Runode, use environment, such as clothes Drying can be performed according to the type and user's preference.

A second invention is, in particular, in the above-described first invention, an input setting means for setting the setting and operation content of such operation course, the input setting unit, dedicated to change Tokoro value By providing the input setting means, the user can change the determination value or the predetermined value more easily.

In particular, in the first invention, the third invention includes input setting means for setting a driving course or setting of operation details, and the input setting means performs a special operation that is not a normal operation. more in, by which is adapted to change the Tokoro value, additional parts without the need for for change, at low cost, can realize the clothes dryer to change the decision value or a predetermined value.

A fourth invention is, in particular, in any one invention of the first to 3 comprising display means for displaying the set state of such operation course, on the display means, indicating that the Tokoro value is changed By providing display means, the user can visually confirm that the determination value or the predetermined value has been changed.

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

(Embodiment 1)
FIG. 1 shows a configuration of a main part of a drum-type washing / drying machine 1 according to the embodiment, and the drum-type washing / drying machine 1 is configured by incorporating the function of a clothes dryer in the drum-type washing machine.

In FIG. 1, a water tank 3 is supported in a slanting state in a washing machine housing 2 by a suspension structure (not shown), and a rotating drum (clothing storage tank) 4 formed in a bottomed cylindrical shape is provided in the water tank 3. It is supported rotatably. The rotary drum 4 is rotationally driven by a drum drive motor 5 attached to the back of the water tank 3 so that the rotational speed can be varied and the rotational direction can be switched. Further, the rotating drum 4 is inclined so that the rotation axis direction thereof is inclined downward from the front side opening as shown in the drawing toward the back side serving as the bottom surface, so that the front side of the washing machine casing 2 is arranged. Opening the door 6 that can be opened and closed on the inclined surface 2a formed on the rotating drum 4 is less likely to bend when the clothes (drying object) are put in and out of the rotating drum 4, and the drum-type washing and drying Since there is no need to secure a space on the front side of the machine 1, the drum-type washing and drying machine 1 that can be installed in a narrow space such as a washroom can be configured.

  In addition to the above-described components, the washing machine housing 2 includes a water supply valve 7 for supplying water into the water tank 3 and a drain valve 8 for discharging the water in the water tank 3 to the outside. Further, as shown in FIGS. 2 and 3, the air in the water tank 3 exhausted from the exhaust port 9 is dehumidified in the dehumidifying conduit 10, so that the drying process of drying the clothes accommodated in the rotary drum 4 can be performed. An air circulation path for drying that blows air again from the blower opening 14 into the water tank 3 through the yarn waste collecting filter 11, the blower duct 12, and the heating duct 13 is configured.

  As shown in FIG. 2, the dehumidifying conduit 10 is formed adjacent to the side peripheral surface of the water tank 3, and communicates with the inside of the water tank 3 through an exhaust port 9 that opens to the side peripheral surface of the water tank 3. A dehumidifying means 17 having a water injection nozzle (refrigerant supply means) 15 and a heat exchanger 16 through which water sprinkled from the water injection nozzle 15 flows is disposed in the dehumidification conduit 10 and is exhausted from the exhaust port 9. The air in the water tank 3 is dehumidified by being cooled by the heat exchanger 16. The dehumidifying duct 10 is connected to the blower duct 12 on the front side of the washing machine casing 2, and a lint collecting filter 11 that filters lint such as lint contained in the air is provided at the inlet of the blower duct 12. It is arranged. The blower duct 12 is a duct for guiding air to the heating duct 13 disposed on the back side of the water tank 3, and is disposed adjacent to the side peripheral surface of the water tank 3 together with the dehumidifying duct 10. As shown in FIG. 3, the blower duct 12 is connected to a heating duct 13 formed in a substantially arc shape so as to surround the drum drive motor 5 on the back side of the water tank 3, and the blower fan disposed at the connection portion. (Blowing means) 18 forms a one-way air flow in the drying air circulation path.

  A heater (heating means) 19 is disposed in the heating pipe 13 and heats the air flowing from the blower pipe 12 to the inside of the water tank 3 as hot air heated and dried from the blower opening 14 leading to the water tank 3. To send. The heating pipe 13 is heated by a blowing air temperature sensor (blowing air temperature detecting means) 20 for detecting the temperature of air blown from the blowing duct 12 and a heater 19 and is blown from the blowing port 14. And a hot air temperature sensor 21 for detecting the temperature of the hot air to be detected, a temperature fuse 22 for detecting an abnormal overheating state of the heater 19 and shutting off the energization of the heater 19, An overflow water level sensor 23 is provided for detecting the overflow water level at which bubbles flow into the blower fan 18 side.

  A cooling water temperature sensor (refrigerant temperature detecting means) 42 for detecting the temperature of water used for dehumidification is provided at the bottom of the water tank 3.

  The drum type washing and drying machine 1 having the above-described configuration performs a washing process, a rinsing process, and a dehydrating process by a control operation by a control device 24 configured as shown in FIG. 4, and a drying process is performed as necessary. The

In FIG. 4, the control device 24 controls the operation of the water injection valve 25 for injecting water into the motor 5, the drain valve 8, the water supply valve 7, and the dehumidifying means 17, the heater 19, the blower fan 18, and the like to wash, rinse, and dehydrate. And a control means 26 comprising a microcomputer for sequentially controlling a series of drying steps. The control means 26 inputs information from the input setting means 27 for setting the driving course, etc., displays the information on the display means 28 based on the information, informs the user, and starts the operation by the input setting means 27. Is set, the switching means 30 is controlled via the switching means drive circuit 29, and the motor 5, the drain valve 8, the water supply valve 7, the water injection valve 25, and the heater 19 are controlled.
Then, the operation of the blower fan 18 or the like is controlled to perform the washing operation.

  At this time, the control unit 26 controls the rotation of the motor 5 by controlling the inverter 33 via the inverter drive circuit 32 based on the information from the position detection unit 31 that detects the position of the rotor of the motor 5. ing. Although the motor 5 is a direct current brushless motor, although not shown, it is composed of a stator having a three-phase winding and a rotor having a two-pole permanent magnet disposed on the ring, and the stator has a three-phase winding. The first winding 5a, the second winding 5b, and the third winding 5c to be configured are wound around an iron core provided in a slot.

  The inverter 33 is constituted by a switching element composed of a parallel circuit of a power transistor (IGBT) and a reverse conducting diode. A series circuit of a first switching element 33a and a second switching element 33b, a series circuit of a third switching element 33c and a fourth switching element 33d, and a fifth switching element 33e and a sixth switching element 33f A series circuit is configured, and the series circuit of each switching element is connected in parallel.

  Here, both ends of the series circuit of the switching elements are input terminals, connected to a DC power source, and output terminals are respectively connected to connection points of two switching elements constituting the series circuit of the switching elements. The output terminal is connected to the U terminal, V terminal, and W terminal of the three-phase winding, and the U terminal, V terminal, and W terminal are connected by the on / off combination of two switching elements constituting the series circuit of the switching element. The three states are positive voltage, zero voltage, and release, respectively.

  The on / off of the switching element is controlled by the control means 26 based on information from the three position detection means 31a, 31b, 31c comprising Hall ICs. The position detection means 31a, 31b, 31c are arranged on the stator so as to face the permanent magnets of the rotor at an electrical angle of 120 degrees.

  During one rotation of the rotor, the three position detecting means 31a, 31b, 31c each output a pulse at an electrical angle of 120 degrees. The control means 26 detects when the signal state of any of the three position detection means 31a, 31b, 31c has changed, and based on the signals of the position detection means 31a, 31b, 31c, the switching elements 33a-33f. By changing the on / off state, the U terminal, the V terminal, and the W terminal are brought into three states of positive voltage, zero voltage, and release, and the first winding 5a, the second winding 5b, and the third winding of the stator. The coil 5c is energized to create a magnetic field and rotate the rotor.

  The switching elements 33a, 33c, and 33e are each controlled by pulse width modulation (PWM), and for example, the rotational speed of the rotor is controlled by controlling the energization ratio of high and low at a repetition frequency of 10 kHz. The control means 26 detects the cycle every time the signal state of any of the three position detection means 31a, 31b, 31c changes, calculates the rotational speed of the rotor based on the period, and sets it to the set rotational speed. The switching elements 33a, 33c and 33e are PWM-controlled.

  The current detection means 34 includes a resistor 35 connected to one input terminal of the inverter 33 and a current detection circuit 36 connected to the resistor 35, and detects the input current of the inverter 33, that is, the current of the motor 5. The signal is converted into a voltage signal, and the voltage signal is input to the control means 26. Further, the control unit 26 performs A / D conversion on the input voltage signal and performs arithmetic processing as digital data, thereby controlling the motor 5.

  When the motor 5 is a direct current brushless motor, the torque is substantially proportional to the input current. Therefore, the torque of the motor 5 is detected by detecting the input current value of the inverter 33 by the current detection circuit 36 connected to the resistor 35. be able to.

  The commercial power source 37 is connected to the inverter 33 via a DC power source conversion device including a diode bridge 38, a choke coil 39, and a smoothing capacitor 40. However, this is an example, and the configuration of the DC brushless motor 5, the configuration of the inverter 33, and the like are not limited thereto.

  The storage means 41 is composed of a non-volatile memory or the like in which the stored contents are not lost even if power is not supplied, and can store the operation setting contents, the number of operations, and the like.

The position detection means 31 detects the position of the rotor of the motor 5 and outputs three pulses during the rotation of the rotary drum 1 by the rotation of the rotor (in this embodiment, the rotation of the rotary drum 1). Since the number of motors 5 and the number of rotations of the motor 5 are the same, three pulses are output while the motor 5 rotates once), and the rotation of the motor 5 can be detected by this output pulse. or it can function as a rotation detection means to detect the rotational state of the motor 5.

  In addition, the control device 24 has a temperature detection means circuit 50 that inputs detection outputs of the blown air temperature sensor 44 and the cooling water temperature sensor 49 to the control means 26 and detects a temperature state.

  As shown in FIG. 5, the input setting means 27 includes a washing time setting switch 27a for setting the washing time, a rinsing frequency setting switch 27b for setting the rinsing frequency, a dehydration time setting switch 27c for setting the dehydration time, and a drying time. A drying setting switch 27d, a course setting switch 27e, a start / pause switch 27f, a power-on switch 27g, and a power-off switch 27h.

  Further, the display means 28 includes a washing time display section 28a, a rinse count display section 28b, a dehydration time display section 28c, a drying time display section 28d, a course setting display section 28e, a detergent amount display section 28f, a remaining time display section 28g, a number. A display unit 28h and the like are included.

  The drum-type washing / drying machine having the above-described configuration may perform a drying process to dry the dehydrated clothes after the washing process, the rinsing process, and the dehydrating process, or may dry wet clothes. Executing only the drying step can be arbitrarily performed. When the execution of the drying process is selected and input from the input setting means 27, the control means 26 rotates the rotary drum 4 by the drum drive motor 5 to turn on the blower fan 18 and the heater 19, and the water injection valve 25. Is output to the switching means 30 via the switching means drive circuit 29, so that the blower fan 18 is rotationally driven to perform a drying operation for circulating the air in the water tank 3 through the drying air circulation path.

As shown by the white arrows in FIG. 2, the air in the rotary drum 4 comes into the water tank 3 from the through holes 4 a formed in the peripheral surface by the rotation of the blower fan 18, and dehumidifies from the exhaust port 9. Exhaust into the passage 10. In the heat exchanger 16 disposed in the dehumidification pipe line 10, water supplied by opening the water injection valve 25 is injected from the water injection nozzle 15 and cooled, so that the exhaust gas is exhausted into the dehumidification pipe line 10. The air containing the humidified moisture is cooled by the heat exchanger 16 so that water vapor contained in the air is condensed and removed as water, so that the moisture in the exhausted air is dehumidified. The air dehumidified in the dehumidifying conduit 10 passes through the lint collecting filter 11, passes through the blower conduit 12, is led to the rear of the water tank 3, flows into the heating pipe 13 provided on the back surface of the water tank 3, and is heated. It is heated by 19 and blown into the water tank 3 from the blower port 14. Since the air blown into the water tank 3 flows into the rotating drum 4 from the air holes 4b and the through holes 4a formed on the bottom surface of the rotating drum 4, moisture is taken away from the clothes by the dehumidified and heated air, and the rotating drum Drying of all clothing is promoted by agitation by the rotation of 4, and the clothing is dried by repeating this air circulation for a predetermined time.

  A plurality of vent holes 4 b are formed on the circumference corresponding to the air blowing port 14 formed in the water tank 3 on the bottom surface (back surface) of the rotating drum 2, and the temperature blown into the water tank 3 from the air blowing port 14. Most of the wind is fed into the rotary drum 2 from the vent hole 4b. Since the air blowing port 14 is formed below the center of the rotating drum 4, the warm air is blown from the lower side of the rotating drum 4 through the vent hole 4 b and rises. You can touch a wide area and take moisture away from clothes efficiently.

  The drying process is performed for a set time. However, excessive drying is not preferable for clothes and the like, and power consumption is wasted. Therefore, the dryness is detected and the predetermined dryness is detected. Then, control is performed to stop the heating by the heater 20 and shift to an air cooling process with only air blowing. Hereinafter, switching control from the drying process to the air cooling process based on the detection of the dryness will be described.

  The dryness is detected by the air temperature detected by the air temperature sensor 20 provided in the heating line 13 and the cooling water injected into the heat exchanger 16 provided in the dehumidifying line 10. After cooling the heat exchanger 16, as shown by a broken line in FIG. 2, the temperature of the drained cooling water is determined using the cooling water temperature detected by the cooling water temperature sensor 42 provided at the bottom of the water tank 3. The

  As shown in FIG. 6, when the blowing air temperature A and the cooling water temperature W are detected at a predetermined time interval (for example, every 2 minutes) at the start of the drying process, the temperature rises in the preheating drying period, and after that, It shifts to the constant rate drying period with little temperature change, reaches the decreasing rate drying period in which the drying progresses, and the blowing air temperature A rises again, and the cooling water temperature tends to fall. When the temperature difference (A−W) between the blast air temperature A and the cooling water temperature W of this temperature change is seen, it becomes as shown by a broken line in FIG.

  Therefore, if the amount of change of the cooling water temperature W in a predetermined time (for example, 10 minutes) is detected, the amount of change is large in the preheating drying period when the drying process is started, and the amount of change is small in the constant rate drying period. In the vicinity of the transition from the preheating drying period to the constant rate drying period, that is, the temperature difference between the cooling air temperature A and the cooling water temperature W when the cooling water temperature change amount ΔW becomes equal to or lower than the first predetermined temperature T1 ( A−W) is defined as a reference value temperature (reference value) T2. Thereafter, the temperature difference (A−W) between the blown air temperature A and the cooling water temperature W is greater than or equal to a second predetermined value temperature (determination value or predetermined value) Ts (T3−T2) with respect to the reference value temperature T2. When this state is detected, it is determined that the drying is finished. The second predetermined value temperature Ts is a temperature at which an appropriate degree of dryness confirmed in advance by experiments can be obtained. Therefore, when this state is detected, it means that the required dryness has been obtained, so the drying process is terminated, and the air cooling process in which the energization to the heater 19 is cut off and only the blowing is continued. Transition.

  As described above, the second predetermined value temperature Ts is in a state where an appropriate degree of dryness confirmed in advance in an experiment can be obtained. However, the finish of the dryness varies depending on the usage environment of the drum type washing / drying machine 1, the type of clothes to be dried, and the like, and the user may not be satisfied with an appropriate dryness depending on the preference of the user. To the user's preference, if you want to further dry the clothes and want to dry the clothes further, or if you finish drying in the raw dry state and dry the clothes with sunlight etc., wrinkles to the clothes will decrease, There are cases where it is desired to finish drying quickly in a dry state.

  If the second predetermined temperature Ts is set to a predetermined temperature Tsh that is higher than the normal time, the drying time becomes longer, the degree of drying progresses, and if the second predetermined temperature Ts is set lower than the normal time to the predetermined temperature Tsl, the drying ends quickly. To do.

  Further, as shown in Table 1, the second predetermined temperature Ts needs to be changed depending on the ambient temperature and the amount of clothing (the detection method is omitted). That is, when the ambient temperature is low, even if the degree of dryness progresses, both the blown air temperature A and the cooling water temperature W tend to decrease as the ambient temperature is low, and the temperature difference (A−W) is also low. Become. Also, the dryness and temperature difference (A-W) vary depending on the amount of clothing. If the amount of fabric is large, the temperature difference (A-W) tends to be difficult to open. This setting is also a temperature obtained in advance by experiments.

  First, when it is desired to further dry the clothes, the second predetermined temperature Tsh as shown in Table 2 is set. This set temperature is a setting in which drying is completed in a state where the drying is further performed under the respective conditions corresponding to the ambient temperature and the amount of clothing, and is a temperature obtained in advance from an experiment.

  On the other hand, when it is desired to finish the drying in the freshly dried state, the second predetermined temperature Tsl as shown in Table 3 is set. This set temperature is a predetermined temperature that is set so that drying ends in a freshly dried state under the respective conditions corresponding to the ambient temperature and the amount of clothing, and this temperature is also a temperature obtained in advance by experiments.

  In addition, as a method of extending the drying time, the method of changing the second predetermined temperature Ts and extending the time until the detection of drying has been described above. However, the second predetermined temperature Ts is left as it is, and after the detection of drying, it is further constant. By performing the time (delay time) drying operation, the drying time can be lengthened. At this time, a delay time is set according to the ambient temperature and the amount of cloth, and drying in a further dried state can be realized.

  As a method for changing the second predetermined temperature Ts, a special operation mode for repair inspection is set by operating the input setting means 27, and the second predetermined temperature Ts is set in this special operation mode. For example, in the special operation mode, the dryness (a) at the time of factory shipment, the dryness (b) when the clothing is desired to be dried, and the dryness (c) when the clothing is desired to be dried dry can be adjusted. To. At this time, the display unit 28 displays the setting as shown in FIGS. 7A, 7B, and 7C.

  In the above configuration, the operation will be described with reference to FIGS. The operation is started at step 90 in FIG. 8, and the power-on switch 27g is turned on at step 91. At this time, if the washing time setting switch 27a is turned on at step 92, step 93 proceeds and correction inspection is performed. Is set to the operation mode. The operation mode for repair inspection includes an operation mode for forcibly driving an actuator such as the motor 5, the water supply valve 7 and the drain valve 8 to confirm that the actuator operates normally. It has a function of adjusting a normal operation state in consideration of mass production variation (for example, a dryness detection level during a dry operation).

  In step 94, the setting in the operation mode for repair inspection is switched by the rinse number setting switch 27b. There is a setting for driving the motor 5 to reverse the rotating drum 1 to the left and right, etc., and in step 95, it is determined whether or not it is a setting mode for adjusting the degree of drying during the drying operation. It is set by switching with the drying time setting switch 16d.

That is, there are three levels for adjusting the degree of drying, such as the standard dryness at the time of shipment from the factory, the dryness when the clothing is desired to be dried, and the three levels when the clothing is desired to be dried. As described above, the adjustment of the degree of drying is realized by setting each second predetermined temperature Ts used for detecting the degree of drying. The setting state at this time is displayed as shown in FIG. 7 by the display means 28 so that the setting state can be distinguished. Further, at this time, by pressing the start switch (start, pause switch) 27f, the contents set in step 96, stored in the storage unit 31, the next time the drying operation, operates on the basis of this setting . In step 97, it is determined whether or not the start switch 27f has been pressed. If so, the set contents are stored in the storage means 41 in step 98. In step 92, if the washing switch 16a is not pressed, a normal drying operation is performed.

  Next, the operation during the washing and drying operation will be described with reference to the flowchart of FIG. In step 100, the operation is started. In step 101, the power-on switch 27g is turned on. At this time, if the washing time setting switch 27a is not turned on in step 102, the process proceeds to step 103, and the normal washing and drying operation is performed. I do. In step 103, the course to be driven is set by the input setting means 16, and in step 104, it is determined whether the start switch 16f is pushed. If the start switch 16f is pushed, the process proceeds to step 105 and the washing and drying operation is performed. To start. Thereafter, in step 106, as shown in FIG. 10, washing, rinsing, dehydration, and drying steps are sequentially performed.

  If it is determined in step 107 that the order is to shift to the drying process, the drying operation is started in step 108. By rotating the rotating drum 1 left and right by driving the motor 5 by the control means 26, the clothes in the rotating drum 1 are rotated, the blower fan 18 and the heater 19 are operated, and the water injection valve 25 is operated. Then, a drying operation is performed by circulating air in the rotating drum 1 and dehumidifying it.

During the drying operation, in step 109, the degree of drying of the clothes in the rotary drum 4 is detected by the blown air temperature A and the cooling temperature W as shown in FIG. Whether the degree of drying has progressed is determined based on whether or not the temperature difference (A−W) has reached the second predetermined temperature Ts as described above. Second
The predetermined temperature Ts is the state set in the operation mode for repair inspection in the above step 102, and is set according to the finished state of drying.

  In step 110, it is determined whether the temperature difference (A−W) has reached the second predetermined temperature Ts and the drying detection is to be terminated. If it is determined that the drying detection is to be terminated, the process proceeds to step 111. If it is determined that the drying detection is not finished, the drying operation is continued until the drying detection is performed. When the drying operation is continued for a predetermined time (delayed drying process) after the drying is detected, the drying operation is performed at Step 111. When it is determined at Step 112 that the predetermined time has elapsed, the drying operation is ended and Step 113 is performed. Blowing operation is performed. After completion of the air blowing operation, the washing / drying operation is terminated.

  In this way, the degree of drying can be adjusted according to the user's request, so that it is possible to operate as a dryer that satisfies the user.

  Further, the control unit 26 stores the setting state set by specially operating the input setting unit 27 in the storage unit 41. After storing the setting state by the storage unit 41, the storage unit 41 stores the washing operation. Since the operation is performed according to the set state, the washing operation is always performed under the set conditions after the setting, so that it is possible to save the trouble of setting every time the operation is performed and to improve the operability. can do.

  Further, the control means 26 performs the special operation by the input setting means 27 in the same manner as the operation method for setting the operation for performing the repair inspection so that the repair person can easily set the operation state. At the same time, it is possible to prevent the user or the like from erroneously setting it to another operating state by mistake.

  In the above embodiment, the second predetermined temperature Ts is changed by a special operation of the input setting means 27. However, a dedicated input setting means for changing may be provided. In this case, the user can change it more easily.

  As described above, since the clothes dryer according to the present invention can change the drying finish of the clothes, it becomes possible to perform the drying according to the use environment, the type of clothes, etc. and the preference of the user, It is useful as a clothes dryer or a washing machine having a clothes drying function.

Sectional drawing which shows the principal part structure of the drum type washing-drying machine in 1st Embodiment. Sectional drawing which shows the structure of the drying function of the drum type washing and drying machine The top view which shows the structure in the heating pipe line which comprises the drying function of the drum type washing-drying machine The block diagram which shows the structure of the control apparatus with which the drum type washing-drying machine is provided. Enlarged front view of input setting means and display means of the drum type washing and drying machine Temperature change graph explaining the detection of the end of drying of the drum type washing and drying machine (A) The figure which shows the display of the dryness at the time of factory shipment by the display means 28 of the same drum type washing-drying machine (b) The dryness of the case where it is desired to dry clothes more by the display means 28 of the same drum-type washing and drying machine The figure which shows a display (c) The figure which shows the display of the dryness in the case of wanting to make clothes dry by the display means 28 of the drum type washing-drying machine Flow chart for setting the same drum type washer / dryer Operation flowchart of the drum-type washer / dryer Timing chart for washing and drying operation of the drum type washing and drying machine

4 Rotating drum (clothing storage tank)
10 Dehumidification pipeline (air circulation path)
12 Air duct (air circulation path)
13 Heating pipe (air circulation path)
15 Water injection nozzle (refrigerant supply means)
16 Heat exchanger 17 Dehumidifying means 18 Blower fan (Blower means)
19 Heater (heating means)
20 Blower air temperature sensor (Blower air temperature detection means)
26 Control means 42 Cooling water temperature sensor (refrigerant temperature detection means)

Claims (4)

After dehumidifying the moisture contained in the air exhausted from the clothing storage tank containing the object to be dried by the dehumidifying means, a blowing means and an air circulation path are formed which are heated by the heating means and blown again into the clothing storage tank, Refrigerant temperature detecting means for detecting the temperature of the refrigerant after being supplied from the refrigerant supply means to the heat exchanger constituting the dehumidifying means and performing heat exchange, and detecting the temperature of the blown air immediately before reaching the heating means And a control means for controlling the heating means, the blower means and the refrigerant supply means, wherein the control means has a change amount of the refrigerant temperature detected by the refrigerant temperature detection means within a predetermined time. When the temperature difference between the blown air temperature and the refrigerant temperature when the amount of change is less than or equal to the predetermined change amount is a reference value, In a clothes dryer in which the heating means is controlled to be switched from the drying process to the air cooling process, the predetermined value can be changed in accordance with a plurality of drying degrees, and the ambient temperature is increased as the amount of clothes increases. The clothes dryer which increased the difference of the predetermined value between the degree of drying as it became low . The clothes dryer according to claim 1 , further comprising input setting means for setting a driving course or the like and setting of driving details, wherein the input setting means is provided with dedicated input setting means for changing a predetermined value . 2. An input setting means for setting a driving course or the like and setting of driving details is provided, and the predetermined value is changed by performing a special operation that is not a normal operation of the input setting means. Clothes dryer. The clothes drying according to any one of claims 1 to 3, further comprising display means for displaying a setting state such as a driving course , wherein the display means is provided with a display means for displaying that a predetermined value has been changed. Machine.

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