JP4900330B2 - Washing and drying machine - Google Patents

Description

  The present invention relates to a washing dryer having a drying function.

  Conventionally, this type of washing and drying machine has been considered to use a heat pump device as a dehumidifying and drying means (see, for example, Patent Document 1). FIG. 10 is a system diagram of a clothes drying apparatus using a heat pump device.

  The clothes drying apparatus includes a compressor 1 driven by a DC motor (not shown), a radiator 2 that radiates heat of the compressed high-temperature and high-pressure refrigerant, and an expansion valve for reducing the pressure of the high-pressure refrigerant. Alternatively, there is provided a heat pump device 6 in which a throttle means 3 composed of a capillary tube and a heat absorber 4 that draws heat from the surroundings by a refrigerant that has been decompressed to a low pressure are connected by a conduit 5 through which the refrigerant circulates. The clothing drying apparatus is configured to send the drying air heated by the radiator 2 to the heat absorber 4 through the drying chamber 8 containing the clothing 7 and return the air to the radiator 2 again, and an air passage through which the drying air flows. 10 is provided.

  The air passage 10 between the drying chamber 8 and the heat absorber 4 is provided with exhaust heat means 11 for releasing a part of the heat of the drying air to the outside. This exhaust heat means 11 prevents the refrigerant pressure from excessively rising due to the input heat of the compressor 1 staying in the air passage 10 and causing a decrease in capacity, so that the clothes can be stably dried. Be placed. The exhaust heat means 11 includes, for example, an exhaust port 12 provided on the upstream side of the air passage 10, a first opening / closing damper 13 that opens and closes the exhaust port 12, and an upstream side of the heat absorber 4 on the downstream side of the exhaust port 12. An intake port 14 provided on the side and a second opening / closing damper 15 for opening and closing the intake port 14 are configured.

  When operating the exhaust heat means 11 to release part of the heat of the drying air to the outside, the first opening / closing damper 13 and the second opening / closing damper 15 are opened, and the drying air is discharged from the exhaust port 12. Part of the air is discharged to the outside, and outside air is introduced from the intake port 14. On the other hand, when the operation of the heat exhausting means 11 is stopped, each of the first opening / closing damper 13 and the second opening / closing damper 15 is closed. In addition to this method, the exhaust heat means 11 includes a water cooling method for cooling with water and an air cooling method for cooling with air. A temperature detecting means 16 such as a thermistor for detecting the temperature of the drying air in the vicinity of the radiator 2 is disposed in the air passage 10.

  The compressor 1 is connected with a compression capacity varying means 17, and the drive frequency or drive voltage of the DC motor (not shown) is changed by an inverter circuit according to the output of the temperature detection means 16. The compression capacity is changed by changing the rotation speed. A control means 18 is connected to the exhaust heat means 11, and the heat radiation amount is controlled by the compression capacity of the compressor 1 and the output of the temperature detection means 16.

Further, it is also considered that an auxiliary cooling means is disposed in an air passage connecting the radiator and the heat absorber, and cooling is performed using water condensed on the heat absorber as the auxiliary cooling means (see, for example, Patent Document 2). ).
JP 2007-82586 A JP 2008-48810 A

Washing and drying machines that are dried using a conventional heat pump device have the advantage that the warm air temperature is lower than that of the electric heater type, so there is less wrinkle sticking during drying, but in order to further reduce wrinkles, Although it is effective to increase the wind speed, a new problem arises that if the rotational speed of the blower 9 is increased to increase the speed of the warm air, the wind noise increases and the noise increases.

  In the heat pump type washer / dryer, it is effective to open and close the first opening / closing damper 13 and the second opening / closing damper 15 as the exhaust heat means 11 to release a part of the air to the outside, and the configuration is also simple. However, if the speed of the warm air is increased to reduce wrinkles during drying, the wind noise of the blower 9 rotating at a high rotational speed increases, and the first open / close damper 13 and the second Since leakage occurs when the open / close damper 15 is opened, it is necessary to simultaneously realize exhaust heat and noise reduction.

  Further, as the heat exhausting means 11 that does not open the air passage 10, there are an air cooling type that is cooled by a blower fan and a water cooling type that is cooled by water. In addition to being a new sound source, there were problems of increased power consumption and water usage.

  SUMMARY OF THE INVENTION The present invention solves the above-described problems, and an object of the present invention is to achieve stable wrinkle reduction and noise reduction during drying by operating a heat pump device stably.

  In order to solve the above-described conventional problems, a washing and drying machine according to the present invention includes an exhaust heat unit that discharges heat of drying air flowing through an air circulation path, and a control unit that executes washing, rinsing, and drying steps. The exhaust heat means has an openable / closable exhaust part for exhausting the drying air and a circulation cooling part for cooling the drying air, and the control means is for a predetermined time after starting the drying operation. The air volume of the blower is increased later, and the drying air is switched from the exhaust from the air circulation path to the circulation cooling.

  As a result, the drying air is exhausted from the air circulation path until the air volume of the blower is increased, and heat is efficiently released. When the air volume of the blower is increased, the cooling air is switched to circulation cooling, and the drying air is exhausted from the air circulation path. Without this, the noise of the blower accompanying the increase in air volume is confined in the air circulation path and the heat of drying air is released, so the heat pump device can be operated stably to reduce wrinkles and noise during drying. Can do.

  The washing and drying machine of the present invention can stably reduce the wrinkles and noise during drying by operating the heat pump device stably.

The first aspect of the invention relates to a rotating tub for storing clothes, a water tub in which the rotating tub is rotatably mounted, a radiator for radiating heat from the compressor and the compressed high-temperature high-pressure refrigerant, and the pressure of the high-pressure refrigerant. A heat pump device connected by a refrigerant pipe so that the refrigerant is circulated, a heat absorber that takes heat from the surroundings by a throttle means for reducing the pressure, and a refrigerant that has been reduced in pressure to a low pressure, and the radiator and the heat absorber are disposed. An air circulation path communicating with the water tank, a blower for blowing drying air to the rotating tank and the air circulation path, a heat exhausting means for releasing heat of the drying air flowing through the air circulation path, and washing and rinsing Control means for performing each step of drying, and the exhaust heat means includes an openable / closable exhaust part for exhausting the drying air, and a circulating cooling part for cooling the drying air, and the control means Is a predetermined time after the start of the drying operation. By increasing the amount and switching the drying air from the exhaust from the air circulation path to the circulation cooling, the control means keeps the blower 1st until the predetermined time is reached after the drying operation is started. , The exhaust section is opened, a part of the drying air circulating in the air circulation path is exhausted, the outside air is taken in, and the heat is efficiently and quickly released. In the first half of the drying operation, since it is difficult for wrinkles to adhere to the clothes, the warm air applied to the clothes can be set at a low speed, and the blower can be rotated at a low rotational speed. Therefore, since the wind noise of the blower is low, there is no noise. Further, after reaching the predetermined time, the control means rotates the blower at a second rotational speed higher than the first rotational speed, switches to circulation cooling, and releases the heat of the drying air. In the latter half of drying, wrinkles are likely to stick to the clothing, so it is necessary to increase the speed of the warm air applied to the clothing, and the blower must be rotated at a high rotational speed. Therefore, a large wind noise is generated in the blower. However, since the heat of the drying air is released by closing the exhaust part, it does not leak as noise from the exhaust part.

  Therefore, the drying air is exhausted from the air circulation path until the air volume of the blower is increased, and when the air volume of the blower is increased, the cooling air is switched to circulation cooling, and the drying air is not exhausted from the air circulation path. Therefore, the heat pump device can be operated stably to reduce wrinkles and noise during drying.

  In particular, the second invention is provided with water supply means for supplying water to the water tank of the first invention, and a water storage part for storing the rinse water supplied in the rinsing process by the water supply means, and the circulation cooling part is provided in the water storage part. Since the air circulation path is cooled by the stored rinse water, a large amount of rinse water used in the rinse process can be effectively used for releasing heat of the drying air.

  In the third aspect of the invention, in particular, the circulating cooling section of the second aspect of the invention can lower the water temperature of the water used for cooling by cooling the rinse water stored in the water storage section with a heat absorber. It is possible to enhance the cooling effect and effectively release the heat of the drying air.

  In the fourth aspect of the invention, in particular, the circulating cooling section of the second or third aspect of the invention cools the rinse water stored in the water storage section with a heat absorber when the drying air is exhausted from the exhaust section. Thus, the temperature of the water used for cooling can be lowered between the start of the drying operation and the switching to the circulation cooling.

  According to a fifth aspect of the invention, in particular, in any one of the first to fourth aspects of the present invention, a cloth amount detecting means for detecting the cloth amount of the garment is provided, and the control means determines the cloth amount detected by the cloth amount detecting means. Since the predetermined time is set based on the amount of clothes, the predetermined time after the drying operation starts depends on the amount of clothing. Can do.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not limited by the form of this invention.

(Embodiment 1)
FIG. 1 is a system diagram showing the configuration of the washing and drying machine according to the first embodiment of the present invention, and FIG. 1 and 2, the washing and drying machine includes a compressor 20, a radiator 21 that radiates heat of the compressed high-temperature and high-pressure refrigerant, a throttle means 22 for reducing the pressure of the high-pressure refrigerant, A heat pump 23 is configured to be connected by a refrigerant pipe 24 through which the refrigerant circulates, and a heat absorber 23 that takes heat from the surroundings with the low-pressure refrigerant.

  This heat pump device 25 is piped by an air circulation path 29 that is led from a radiator 21 to a heat absorber 23 through a rotating tank 28 containing clothes 27 by a blower 26 that blows drying air, and returns to the radiator 21 again. It is connected. The air circulation path 29 is provided with a heat absorber 23 that cools and dehumidifies high-temperature wet air from the rotating tank 28, and a radiator 21 that heats the dehumidified dry air downstream of the heat absorber 23. The blower 26 blows and circulates drying air through the rotating tub 28 and the air circulation path 29 to dry the clothes 27 in the rotating tub 28.

  The air circulation path 29 is provided with exhaust heat means 30 for releasing the heat of the drying air flowing through the air circulation path 29 to the outside. The exhaust circuit 31 exhausts the drying air from the air circulation path 29, and the drying A circulation cooling unit 32 that cools the drying air in a state where the working air circulates through the air circulation path 29 is provided.

  The exhaust unit 31 includes an exhaust port 31a for discharging a part of the circulating drying air to the outside, an exhaust valve 31b for opening and closing the exhaust port 31a, an intake port 31c for introducing outside air into the air circulation path 29, The intake valve 31d for opening and closing the intake port 31c and the opening / closing means 31e for driving the exhaust valve 31b and the intake valve 31d are configured to adjust the heat released to the outside by opening and closing the exhaust port 31a and the intake port 31c. Do it.

  The circulation cooling unit 32 includes a water storage unit 35 that stores cooling water, and a cooling pump 36 that supplies water from the water storage unit 35 to cool the air circulation path 29. The water stored in the water storage unit 35 is rinse water supplied in a rinsing process by a water supply means (not shown), and preferably after the rinsing process, the water used in the final rinsing process with little dirt is stored in the water storage unit 35. Save on. The water stored in the water storage section 35 may be the dew condensation water condensed by the heat absorber 23, and the connection section 37 is provided below the heat absorber 23 so that the dew condensation water flows into the water storage section 35. May be added to water.

  In the air circulation path 29, temperature detection means 38 for detecting the temperature of the circulating drying air is disposed downstream of the radiator 21. The compression capacity variable means 39 changes the compression capacity of the compressor 20 according to the temperature of the drying air detected by the temperature detection means 38.

  The opening / closing means 31e for driving the exhaust valve 31b and the intake valve 31d and the cooling pump 36 are connected to a control means 40 for controlling them. The control means 40 sequentially executes the washing, rinsing and drying steps based on the set program, and also detects the temperature of the drying air detected by the temperature detection means 38 and the compression capacity variable means 39. Depending on the compression capacity (the number of rotations of the compressor 20), the opening / closing control of the exhaust port 31a and the intake port 31c and the water supply control by the cooling pump 36 are performed to adjust the released heat. Moreover, the control means 40 is connected with the air blower 26, and controls rotation speed according to elapsed time. Note that the circulation cooling unit 32 and the temperature detection means 38 may be disposed in the refrigerant pipe 24. Water in the reservoir 35 is discharged from the drain valve 41 to the outside of the machine.

  A rotating tub 28 for storing clothes is rotatably provided in a water tank 43 by a drive motor 42, and is supplied by supplying a predetermined amount of water to the water tank 43 in a washing process and a rinsing process. The amount of water supply is determined by detecting the amount of clothes thrown into the rotary tank 28 by the cloth amount detecting means 44. Then, the control means 40 sets a predetermined time based on the cloth amount detected by the cloth amount detection means 44.

  The rotating tub 28 is provided with a rotating shaft tilted forward and inclined, and a door 45 for putting clothes in and out is provided on the front surface. By tilting the rotating tub 28, the amount of water used for washing can be reduced, and clothes can be taken in and out easily. In the air circulation path 29 through which the drying air circulates, an inlet 46 and an outlet 47 are provided so as to communicate with the water tank 43, and the inlet 46 is located near the door 45 on the front side of the rotary tank 28. The outlet 47 is disposed on the rear surface side, and dry hot air generated by the heat pump device 25 is supplied into the rotary tank 28 from the outlet 47.

Next, the operation as a washing / drying machine will be described. First, clothes (objects to be washed or dried, mainly textile products that can be washed or dried) and detergent are put into the rotating tub 28, the door 45 is closed, and a switch (not shown) of the operation unit is closed. When pushed, the amount of clothes put in by operating the drive motor 42 is detected by the cloth amount detecting means 44, and a water amount suitable for the amount is supplied. The rotating tub 28 is rotated by a drive motor 42 to execute a washing process.

  After the washing process, the washing water in the water tank 43 is drained and the rotation tank 28 is rotated at a high speed to perform the dehydration process. Subsequently, new water is supplied, and the dirt and detergent are washed away by the same operation as the washing process. Repeat the rinsing process several times. The water used in the final rinsing process after the dirt and detergent components are washed away is stored in the water storage unit 35 when the drying process is subsequently performed.

  In the drying process, the rotary tank 28 rotates, and the hot air dehumidified from the air circulation path 29 is blown to perform drying. Air containing moisture from the clothing flows into the air circulation path 29 from the inlet 46 by the blower 26, and after moisture is removed by the heat absorber 23, the air is heated by the radiator 21, and is dried at high temperature. Is discharged from the outlet 47 to the rotary tank 28, and drying proceeds through the drying air circulating through the rotary tank 28 and the air circulation path 29. During this time, the rotary tank 28 repeats normal rotation and inversion to stir the clothes.

  Next, the operation of each part during the drying operation will be described with reference to the time chart of FIG. Until the drying operation is started and the first predetermined time (t1) is reached, the control means 40 rotates the blower 26 at the first rotational speed to control the opening / closing of the exhaust port 31a and the intake port 31c, Adjust the heat release. The water storage unit 35 stores water used in the final rinsing process before entering the drying operation, and the cooling pump 36 stops water supply during this time.

  When the first predetermined time (t1) is reached, the control means 40 rotates the blower 26 at a second rotational speed higher than the first rotational speed, and supplies water to the cooling pump 36 that sends the cooling water to the circulating cooling section 32. To adjust the heat of discharge. The exhaust port 31a and the intake port 31c are closed during this time.

  In addition, when the dew condensation water condensed by the heat absorber 23 is used as cooling water, the amount of the dew condensation water condensed by the heat absorber 23 increases as time passes. Further, the condensed water accumulated in the water storage unit 35 is circulated to the water storage unit 35 and the circulation cooling unit 32 by the cooling pump 36 after reaching the first predetermined time (t1), so that the amount of water that can be used for adjusting the heat released Can be secured.

  Next, operation | movement of the exhaust heat means 30 which discharge | releases the heat of the drying air which flows through the air circulation path 29 outside is demonstrated based on FIG. 4 and FIG. FIG. 4 is a flow of control from the start of the drying operation until the first predetermined time (t1) is reached.

  When the drying operation is started, the program starts. First, the blower 26 is rotated at the first rotational speed in S1. Next, in S2, it is determined whether or not the temperature of the drying air is lower than the first predetermined temperature (67 ° C.). In S2, if the drying air is lower than the first predetermined temperature, the process proceeds to S3. If the drying air is higher than the first predetermined temperature, the process proceeds to S4, and whether the compression capacity is less than the first predetermined value (the rotation speed of the compressor 20 is 70 rpm). It is determined whether or not. If the compression capacity is less than the first predetermined value in S4, the process proceeds to S5, the exhaust port 32a and the intake port 33a are opened, and the process proceeds to S3. On the other hand, if the compression capacity is greater than or equal to the first predetermined value in S4, the process proceeds to S3.

  In S3, it is determined whether or not the temperature of the drying air is equal to or higher than a second predetermined temperature (63 ° C.). In S3, if the drying air is at or above the second predetermined temperature, the process proceeds to S6, but if it is below the second predetermined temperature, the process proceeds to S7, and whether the compression capacity is equal to or greater than the second predetermined value (the rotational speed of the compressor 20 is 95 rpm). It is determined whether or not. If the compression capacity is equal to or greater than the second predetermined value in S7, the process proceeds to S8, the exhaust port 32a and the intake port 33a are closed, and then the process proceeds to S6. On the other hand, if the compression capacity is less than the second predetermined value in S7, the process proceeds to S6.

In S6, it is determined whether or not the elapsed time since the start of the drying operation has reached the first predetermined time (t1), and if it has reached the first predetermined time, the next step (1) is performed. If not reached, return to S2 again and repeat the same flow.

  FIG. 5 is a flow of control after reaching the first predetermined time (t1). When the first predetermined time (t1) is reached, first, the blower 26 is rotated at the second rotational speed in S11. Next, in S12, it is determined whether or not the temperature of the drying air is lower than a first predetermined temperature (67 ° C.). In S12, if the drying air is lower than the first predetermined temperature, the process proceeds to S13. If the drying air is higher than the first predetermined temperature, the process proceeds to S14, and whether the compression capacity is less than the first predetermined value (the rotation speed of the compressor 20 is 70 rpm). It is determined whether or not. If the compression capacity is less than the first predetermined value in S14, the process proceeds to S15, in which the cooling pump 36 supplies water to the circulation cooling unit 32, and then proceeds to S13. On the other hand, if the compression capacity is greater than or equal to the first predetermined value in S14, the process proceeds to S13.

  In S13, it is determined whether or not the temperature of the drying air is equal to or higher than a second predetermined temperature (63 ° C.). In S13, if the drying air is not lower than the second predetermined temperature, the process proceeds to S16. If the drying air is lower than the second predetermined temperature, the process proceeds to S17, and whether the compression capacity is equal to or higher than the second predetermined value (the rotational speed of the compressor 20 is 95 rpm). It is determined whether or not. If the compression capacity is greater than or equal to the second predetermined value in S17, the process proceeds to S18, where the cooling pump 37 stops water supply to the circulation cooling unit 32, and then proceeds to S16. On the other hand, if the compression capacity is less than the second predetermined value in S17, the process proceeds to S16.

  In S16, it is determined whether or not the elapsed time since reaching the first predetermined time (t1) has reached the second predetermined time (t2), and the second predetermined time (t2) is reached. If so, the process proceeds to the next step (2). If not reached, the process returns to S12 and the same flow is repeated. The second predetermined time (t2) is, for example, a time for determining whether to continue further control or to end the drying operation. When further control is continued, the process proceeds to S21 in FIG. In the case of ending, the process proceeds to S29 in FIG.

  Here, the first predetermined time (t1) and the second predetermined time (t2) will be described. In the first half of the drying (drying rate region from the start of drying to the first predetermined time), since the clothes contain a large amount of moisture, the clothes are soft, and the wrinkles are hardly fixed regardless of the speed of the warm air hitting the clothes. On the other hand, the middle drying stage (drying rate region from the first predetermined time to the second predetermined time) is slightly hard because the clothing contains only a small amount of moisture, and is dried by low-speed hot air used in a general dryer. Then, since the force which spreads clothes is weak, many wrinkles stick. After the second half of drying (drying rate region from the second predetermined time to the end of drying), the clothes are very hard because they do not contain moisture, and the wrinkles are fixed regardless of the speed of the warm air hitting the clothes. It is hard to do.

  The first predetermined time (t1) is a time when the drying rate is arbitrarily determined in the region of 85 to 95% in terms of the drying rate. The second predetermined time is the time when the drying rate arbitrarily determined in the region of 95 to 105% is expressed in terms of the drying rate.

  The present invention increases the number of rotations of the blower 26 and applies high-speed warm air to clothing on a drying middle plate (drying rate region from the first predetermined time to the second predetermined time) where wrinkles are easily fixed. It spreads and reduces wrinkle sticking. In addition, after the second half of drying (drying rate region from the second predetermined time to the end of drying), wrinkles are hardly fixed regardless of the speed of the warm air hitting the clothes. Is not directly involved.

  Therefore, the rotational speed of the blower 26 does not need to be specially considered from the viewpoint of wrinkle fixation, but considering the increase in power consumption by increasing the rotational speed of the blower 26, the rotational speed of the blower 26 is lower. Is desirable.

Next, the setting of the first predetermined time (t1) and the second predetermined time (t2) by the cloth amount detection means 43 will be described. These predetermined times are executed by applying the detected amount of clothing to the correlation equation between the preset amount of clothing and the optimum change time, and the first predetermined time (t1) and the second predetermined time are executed. Time (t2) is set with high accuracy, and wrinkles adhering to clothing can be effectively reduced.

  An example in which the cloth amount detection unit 44 rotates the rotating tub 28 containing clothes for a short time to obtain an electrical signal related to the amount of clothes (a detection signal of the cloth amount detection unit) will be described using a motor current. When the drive motor 42 is operated before the start of washing and the rotating tub 28 containing clothes is rotated for a short time, a motor current (acceleration current) resulting from acceleration is generated. Further, when the operation of the drive motor 42 is stopped, a motor current (deceleration current) resulting from deceleration is generated. Since the total current of the acceleration current and the deceleration current is proportional to the amount of clothing, the amount of clothing can be determined by detecting this total current.

  In addition to this, the amount of clothing is determined from both the motor current (or electric power) when the rotating tub 28 is rotated forward and backward for a short time and the inertial rotation angle that rotates with the inertia when the rotation of the rotating tub 28 is stopped. There is also a method of detecting, and when the amount of clothes is large, the motor current is large and the inertia rotation angle is small, and when the amount of clothes is small, the motor current is small and the inertia rotation angle is large. Further, as another cloth amount detection means 43, the weight of the garment may be measured using a weight sensor.

  The first predetermined time and the second predetermined time are times determined based on the temperature detected by the timer or the temperature detecting means 38 disposed in the air circulation path 29.

(Embodiment 2)
FIG. 6 is a flowchart showing the operation of the washing / drying machine according to the second embodiment of the present invention, and shows the flow of control from reaching the second predetermined time (t2) until the end of drying. In FIG. 6, when the second predetermined time is reached (2) from the first predetermined time (t1), the blower 26 is first rotated at a third rotational speed lower than the second rotational speed in S21. . Next, in S22, it is determined whether or not the temperature of the drying air is lower than the first predetermined temperature (67 ° C.). In S22, if the drying air is lower than the first predetermined temperature, the process proceeds to S23. If the drying air is equal to or higher than the first predetermined temperature, the process proceeds to S24, and whether the compression capacity is less than the first predetermined value (the rotation speed of the compressor 20 is 70 rpm). It is determined whether or not. If the compression capacity is less than the first predetermined value in S24, the process proceeds to S25 to open the exhaust port 31a and the intake port 31c, and then proceeds to S23. On the other hand, if the compression capacity is greater than or equal to the first predetermined value in S24, the process proceeds to S23.

  In S23, it is determined whether or not the temperature of the drying air is equal to or higher than a second predetermined temperature (63 ° C.). In S23, if the drying air is above the second predetermined temperature, the process proceeds to S26, but if it is below the second predetermined temperature, the process proceeds to S27, and the compression capacity is equal to or higher than the second predetermined value (the rotational speed of the compressor 20 is 95 rpm). It is determined whether or not. If the compression capacity is greater than or equal to the second predetermined value in S27, the process proceeds to S28, the exhaust port 31a and the intake port 31c are closed, and then the process proceeds to S26. On the other hand, if the compression capacity is less than the second predetermined value in S27, the process proceeds to S26.

  In S26, it is determined whether or not the drying is completed. If it is determined that the drying is completed, the process proceeds to S29 to end the drying operation. If it is determined that the drying is not completed, the process returns to S22 and the same flow is repeated. When the drying operation is completed in S29, the process proceeds to S30. In S31, it is determined whether a predetermined time has elapsed after the drying operation is completed. If it is determined in S31 that the predetermined time has elapsed, the process proceeds to S32, the drain valve 41 is opened, and the water in the water storage section 35 is discharged outside the apparatus. On the other hand, if it is determined in S31 that the predetermined time has not elapsed, the flow returns to S31 again, and this flow is repeated until the predetermined time has elapsed.

At the end of the drying process, the garment is less likely to be wrinkled, so the warm air applied to the garment may reduce the wind speed, and as a result, the blower 26 can be rotated at a low rotational speed. For this reason, even if the exhaust port 31a and the intake port 31c are opened, the wind noise of the blower 26 is low, so that the wind noise does not leak from the exhaust port 31a and the intake port 31c and become noise. In addition, the power consumption of the blower 26 is reduced, and the accumulated heat in the air circulation path 29 is reduced. As a result, the washing / drying machine can stably dry the garment while properly adjusting the heat of discharge, and can further reduce the wrinkle of the garment, the noise, and the power consumption.

  Note that the blower 26 may rotate the third rotation number as the same as the first rotation number.

(Embodiment 3)
FIG. 7 is a time chart showing the operation of the washing / drying machine according to the third embodiment of the present invention. The exhaust port 31a and the intake port 31c are controlled to be opened and closed immediately after the start of drying. However, the exhaust port 31a and the intake port 31c are opened immediately before reaching the first predetermined time (t1) to temporarily release a part of the heat of the drying air. It closes when it reaches a predetermined time (t1) of 1. Immediately thereafter (after reaching the first predetermined time), the cooling pump 36 is operated to adjust the released heat. Other configurations are the same as those in the first embodiment, and the first embodiment is used for the detailed description.

  According to this configuration, when the dew condensation water from the heat absorber 23 that can be used for adjusting the emitted heat cannot be secured by reaching the first predetermined time in a short time, or starting from the drying operation, the water storage unit 35 is rinsed. Even when there is no water, heat is released immediately before reaching the first predetermined time (t1), and thus, after reaching the first predetermined time (t1), adjustment of the released heat with a small amount of cooling water secured. Can be performed satisfactorily.

(Embodiment 4)
In the present embodiment, the second temperature detection means 48 is provided between the rotating tank 28 and the heat absorber 23 in the air circulation path 29, and drying is completed based on the temperature detected by the second temperature detection means 48. This determination is made. The temperature detected by the second temperature detecting means 48 is also used as a temperature for determining that the first predetermined time or the second predetermined time has been reached. Other configurations are the same as those in the first embodiment, and the first embodiment is used for the detailed description.

  When the drying air temperature at the start of drying exceeds the set temperature, the second temperature detecting means 48 changes the rotational speed of the blower after a predetermined delay time. This is because the clothes are dried continuously or the room where the washing / drying machine is placed has an abnormally high temperature, for example, 40 ° C. Since the first predetermined time and the second predetermined time are reached in a much shorter time, it is not in the dry area where the wrinkles are likely to adhere (any period of 85 to 105%), but in the previous dry area The high-speed warm air whose rotational speed is increased to the second rotational speed by the blower 26 is applied to the clothing.

  Therefore, the timing at which the blower 26 increases the rotation speed to the second rotation speed and applies the high-speed hot air to the clothing cannot be set so that the high-speed hot air is blown to the dry area where the high-speed hot air is effective. It may not be effective for reduction.

  Therefore, when the drying air temperature at the start of drying exceeds the set temperature, the blower 26 rotates at the second rotation speed after a predetermined delay time, thereby enabling high speed in a drying region effective for reducing wrinkle adhesion. The warm air can be blown.

(Embodiment 5)
FIG. 8 is a flowchart showing the operation of the washing / drying machine according to the fifth embodiment of the present invention. Other configurations are the same as those in FIGS. 1 and 2, and the description of Embodiment 1 is incorporated. In this embodiment, when the opening / closing abnormality occurs in the exhaust port 31a or the intake port 31c, the discharge heat is adjusted by the water supply control of the cooling pump 36 to the circulation cooling unit 32.

  When the drying operation is started, first, the blower 26 is rotated at the first rotational speed in S40. Next, in S41, it is determined whether the opening / closing of the exhaust port 31a or the intake port 31c is normal. If it is determined in S41 that the opening / closing is normal, the process proceeds to S42, and it is determined whether or not the first predetermined time has been reached since the drying operation was started. On the other hand, if it is determined that the opening / closing is abnormal in S41, the process proceeds to S43, and the discharge heat is adjusted by the water supply control of the cooling pump 36 to the circulation cooling unit 32.

  If it is determined in S42 that the first predetermined time has been reached, the process proceeds to S44 and the blower 26 is rotated at the second rotational speed. On the other hand, if it is determined in S42 that the first predetermined time has not been reached, if it is determined that the opening / closing is normal in S41, the process proceeds to S45 to adjust the heat released by the opening / closing control of the exhaust port 31a or the intake port 31c. And return to S41 again. On the other hand, if it is determined in S41 that the opening / closing is abnormal, the process proceeds to S43 to adjust the discharge heat by the water supply control of the cooling pump 36.

  For this reason, even if the exhaust port 31a or the intake port 31c breaks down and an opening / closing abnormality occurs, it can be replaced by the cooling pump 36, and clothing can be removed while adjusting the heat released from the heat pump device 25. It can be dried stably.

  Moreover, since the water storage part 35 is storing the rinse water used at the rinse process, or the dew condensation water condensed by the heat absorber 23, it is easy to mix the lint and the pebble which fell out from clothing, and the cooling pump which uses this water When a water supply abnormality occurs in 36, the heat is switched to exhaust heat by exhausting the drying air from the exhaust unit 31.

  The operation after S46 after reaching the first predetermined time in S42 and rotating the blower 26 at the second rotation speed in S44 will be described. In S46, it is determined whether or not there is a water supply abnormality signal for the cooling pump 36 once. If there is a water supply abnormality signal even once, the process proceeds to S47, and in S47, it is determined whether or not the water supply abnormality is true. Then, if the water supply abnormality is true, the process proceeds to S48, and it is determined whether the opening / closing of the exhaust port 31a or the intake port 31c is normal.

  If it is determined in S48 that the opening / closing of the exhaust port 31a or the intake port 31c is normal, the blower 26 is rotated at a fourth rotational speed lower than the second rotational speed in S49. Next, the process proceeds to S50, and the heat release is adjusted by opening / closing control of the exhaust port 31a or the intake port 31c.

  If there is no water supply abnormality signal of the cooling pump 36 in S46, the process proceeds to S51, and the heat of discharge is adjusted by the water supply control of the cooling pump 36 to the circulating cooling unit 32. Then, in S52, it is determined whether or not the drying is finished. If it is determined that the drying is finished, the process proceeds to S53, and the program is stopped (drying is finished). On the other hand, if it is determined in S52 that the drying is not completed, the process returns to S46 again, and the same flow is repeated thereafter. If it is determined in S48 that the opening / closing of the exhaust port 31a or the intake port 31c is abnormal, the process proceeds to S54 and the operation of the washing / drying machine is stopped.

  In the present embodiment, when the cooling pump 36 outputs a water supply abnormality signal, the control means 40 rotates the blower 26 at a fourth rotational speed lower than the second rotational speed, and the exhaust heat means 30 is exhausted from the exhaust section. Switching to exhaust heat by exhausting the air for drying from 31, the clothes can be stably dried while adjusting the heat release, and the wrinkles of the clothes can be reduced.

(Embodiment 6)
In the present embodiment, when a water supply abnormality occurs in the cooling pump 36, the operation is normally recovered. Cooling pump abnormality detecting means for detecting abnormality of the cooling pump 36 is provided, and when the cooling pump 36 does not perform a predetermined operation, the energization to the cooling pump 36 is stopped for a predetermined time, and then the operation of energizing again is repeated a predetermined number of times. It is a thing.

  As a result, even when foreign matter mixed in the water storage unit 35 is sucked into the cooling pump 36 and the operation becomes unstable, this can be removed, and the circulation cooling unit 32 can be smoothly prevented by preventing a failure of the cooling pump 36. Can be operated.

  As another example, when the cooling pump 36 does not operate, it is also effective to repeat the forward rotation operation and the reverse rotation operation for a predetermined number of times, and the same effect can be obtained.

(Embodiment 7)
FIG. 9 is a system diagram of a washing / drying machine according to the seventh embodiment of the present invention. The feature of this embodiment is that the rinse water stored in the water storage unit 35 of the circulation cooling unit 32 is cooled by the heat absorber 23. Other configurations are the same as those of the first embodiment, and the first embodiment is referred to for the detailed description.

  After the drying air circulating through the air circulation path 29 is cooled by the heat absorber 23, the refrigerant flowing through the refrigerant pipe 24 is configured to cool the rinse water stored in the water storage unit 35 and return to the compressor 20. . When the heat pump device 25 is in operation, the water stored in the water storage unit 35 by the heat absorber 23 that cools the drying air can also be cooled by the refrigerant flowing through the refrigerant pipe 24, and after the drying air has been cooled The coolant can be effectively used to lower the water temperature.

  The circulation cooling unit 32 is configured such that when the heat of the drying air is released from the exhaust unit 31, the cooling pump 36 is stopped and the rinse water stored in the water storage unit 35 is cooled by the heat absorber 23. As a result, the temperature of the water used for cooling can be sufficiently lowered between the start of the drying operation and the switching to the circulation cooling, and the exhaust heat effect can be enhanced.

  The circulation cooling unit 32 may cool the rinse water stored in the water storage unit 35 when the drying air is exhausted from the exhaust unit 31 until the air volume of the blower 26 is increased in the middle of the drying operation. Well, more accurate exhaust heat can be performed, the heat pump device 25 can be operated stably, and the reduction of wrinkles and noise during drying can be eliminated at the same time.

  As described above, since the washing and drying machine according to the present invention can stably operate the heat pump device and can reduce wrinkles and noise during drying, a clothes dryer and a laundry using the heat pump device can be realized. Useful as a dryer.

System diagram of the washer-dryer according to the first embodiment of the present invention Cross section of the main part of the washing and drying machine Time chart showing the operation of the washer / dryer Flow chart showing the operation of the washing and drying machine Flow chart showing the operation of the washing and drying machine The flowchart which shows operation | movement of the washing dryer of Embodiment 2 of this invention. The flowchart which shows operation | movement of the washing dryer of Embodiment 3 of this invention. The flowchart which shows operation | movement of the washing dryer of Embodiment 5 of this invention. System diagram of the washer-dryer according to the seventh embodiment of the present invention System diagram of conventional clothing drying equipment

Explanation of symbols

20 Compressor 21 Radiator 22 Throttle means 23 Heat absorber 24 Refrigerant conduit 25 Heat pump device 26 Blower 28 Rotating tank 29 Air circulation path 30 Heat exhaust means 31 Exhaust part 31a Exhaust port 31b Exhaust valve 31c Inlet port 31d Intake valve 32 Circulation cooling Section 35 Water storage section 36 Cooling pump 40 Control means

Claims (5)

Rotating tub for storing clothes, water tub in which the rotating tub is rotatably mounted, a radiator for radiating heat from the compressor and the high-temperature and high-pressure refrigerant after compression, and a throttle means for reducing the pressure of the high-pressure refrigerant A heat pump device connected by a refrigerant pipe so that the refrigerant circulates, and an air communicating with the water tank by arranging the radiator and the heat absorber. A circulation path, a blower for blowing drying air to the rotating tank and the air circulation path, a heat exhaust means for releasing heat of the drying air flowing through the air circulation path, and washing, rinsing and drying steps. Control means for executing, the exhaust heat means has an openable / closable exhaust part for exhausting the drying air, and a circulation cooling part for cooling the drying air, and the control means starts the drying operation And increase the air volume of the blower after a predetermined time Together, washing and drying machine to switch to the circulation cooling dry air from the exhaust from the air circulation path. A water supply means for supplying water to the water tank and a water storage section for storing the rinse water supplied in the rinsing process by the water supply means are provided, and the circulation cooling section cools the air circulation path with the rinse water stored in the water storage section. The washing / drying machine according to claim 1. The washing / drying machine according to claim 2, wherein the circulation cooling section cools the rinse water stored in the water storage section with a heat absorber. The washing / drying machine according to claim 2 or 3, wherein the circulation cooling section cools the rinse water stored in the water storage section with a heat absorber when the drying air is exhausted from the exhaust section. The cloth amount detection means for detecting the cloth amount of clothing is provided, and the control means sets a predetermined time based on the cloth amount detected by the cloth amount detection means. The washing dryer described.

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