JP2008029654A - Washing and drying machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a washing and drying machine for raising the efficiency of a drying operation. <P>SOLUTION: The washing and drying machine includes a second evaporator 15, a first condenser 18, a second condenser 20, a first evaporator 22 and a dehumidification part 16. Drying air discharged from the inside of a drum passes through the second evaporator 15, the dehumidification part 16 and the first condenser 18 and is blown into the drum again. In the initial period of the drying operation, a coolant flows to the first condenser 18 and the first evaporator 22. At the time, since the drying air is not cooled in the second evaporator 15, it is rapidly heated. Also, during a cooling operation, the coolant flows to the second condenser 20 and the second evaporator 15. At the time, since the drying air is not heated in the first condenser 18, it is rapidly cooled. Further, during the drying operation, the moisture absorbing ability of the dehumidification part 16 can be restored by supplying air for regeneration to the dehumidification part 16. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a washing and drying machine provided with a heat pump type drying apparatus.

  The washing and drying machine performs not only a washing process including a washing process and a rinsing process in which a drum is rotated at a low speed, but also a dehydrating process in which the drum is rotated at a high speed, and in addition, a drying process. In recent years, not only horizontal drum rotation shafts but also vertical ones have been commercialized.

  In these washing and drying machines, as a means for obtaining heat necessary for drying, a washing and drying machine that performs drying by a heat pump system including a compressor, a condenser, an evaporator, and the like has been proposed (see Patent Document 1).

In such a washing and drying machine, clothes and the like are dried as follows. First, the air heated by the condenser enters the drum, evaporates the moisture in the clothing, cools it with the water vapor through the evaporator, and dehumidifies by condensation. The dehumidified air is sent again to the condenser and heated to come into contact with the clothes in the drum to evaporate the water.
JP-A-64-32893

  In the washing and drying machine as described above, the air is certainly dehumidified by cooling in the evaporator. However, this is dehumidification due to a decrease in the amount of saturated water vapor accompanying a decrease in the temperature of the dry air. For this reason, a certain amount of water vapor remains, and even if it is blown again into the drum, there is a possibility that the moisture of the clothes cannot be sufficiently evaporated.

  Further, the temperature of the dry air heated by the condenser and blown into the drum tends to be lower than the temperature of the air heated by the electric heater (such as a sheathed heater). For this reason, in a washing dryer that performs drying by a heat pump system, the evaporation speed of moisture in clothes may be slower than drying by an electric heater.

  Alternatively, in the initial stage of the drying operation, it is necessary to increase the temperature of the drying air. However, since the drying air is cooled by the evaporator, it tends to take time to reach constant rate drying.

  In addition, when the clothes are cooled after the drying operation is finished, it is necessary to lower the temperature of the drying air. However, even if cooled by the evaporator, it is heated by the condenser, and it takes time to cool the drum. There was a tendency to require.

  The present invention has been made to solve the above problems, and an object of the present invention is to provide a washing / drying machine capable of increasing the efficiency of the drying operation.

  According to one aspect of the present invention, the refrigerant is sequentially circulated through the housing, the water tank contained in the housing, the drum contained in the water tank, the compressor, the first condenser, and the first evaporator. A heat exchange circuit, a first ventilation path arranged so that drying air blown into the drum exchanges heat with the first condenser, and a second ventilation path different from the first ventilation path. The first evaporator exchanges heat with the air passing through the second ventilation path, and dehumidifies the air for drying and the blowing means for generating an air flow in the first ventilation path and the second ventilation path. Provided is a washing and drying machine further comprising a moisture absorbing means for controlling and a controller for controlling the air blowing means.

  Preferably, the first ventilation path is a path through which the drying air discharged from the drum passes through the first condenser as the moisture absorption means and the drying heat source and blows into the drum, and is controlled. The unit controls the air blowing means to generate an airflow such that the drying air passes through the first ventilation path.

  Preferably, the heat exchange circuit further includes a second condenser disposed on the second ventilation path, for changing a flow rate of the refrigerant flowing through each of the first condenser and the second condenser. The refrigerant flow rate adjusting means and a temperature detecting means for detecting the temperature of the drying air blown into the drum are further provided, and the control unit has a predetermined temperature of the drying air detected by the temperature detecting means during the drying operation. The refrigerant flow rate adjusting means is controlled so that more refrigerant flows through the second condenser than through the first condenser in accordance with the temperature range exceeding the predetermined temperature range, and the temperature of the drying air is below the predetermined temperature range. Accordingly, the refrigerant flow rate adjusting means is controlled so that more refrigerant flows through the first condenser than through the second condenser.

  Preferably, the control unit controls the refrigerant flow rate adjusting means so that more refrigerant flows through the second condenser than through the first condenser during the cooling operation for cooling the inside of the drum.

  Preferably, the second ventilation path is a path through which regeneration air for regenerating the moisture absorbing means passes through the second condenser and the moisture absorbing means, which are heat sources for regeneration, and the moisture absorbing means The control unit controls the air blowing unit so that the regeneration air generates an airflow that passes through the second ventilation path.

  Preferably, the control unit controls the air blowing means so as to simultaneously generate airflows in the first ventilation path and the second ventilation path.

  Preferably, the heat exchange circuit further includes a second evaporator disposed on the first ventilation path, and the refrigerant flow rate adjusting unit is configured to supply the refrigerant flowing through each of the first evaporator and the second evaporator. The controller further includes means for changing the flow rate, and the control unit determines whether the temperature of the drying air detected by the temperature detection means is equal to or higher than a predetermined temperature range during the drying operation. The refrigerant flow rate adjusting means is controlled so that more refrigerant flows through the second evaporator than in accordance with the determination that the temperature of the drying air detected by the temperature detecting means is below a predetermined temperature range, The refrigerant flow rate adjusting means is controlled so that more refrigerant flows through the first evaporator than through the second evaporator.

  Preferably, the control unit controls the refrigerant flow rate adjusting means so that more refrigerant flows through the second evaporator than through the first evaporator during the cooling operation for cooling the inside of the drum.

  According to the washing dryer according to the present invention, the drying air can be heated by the first condenser without being cooled by the first evaporator, so that the temperature of the drying air is rapidly increased. be able to. Moreover, by providing the dehumidifying part, it is possible to absorb moisture in the drying air. Therefore, the efficiency of the drying operation can be increased.

  Moreover, according to the washing / drying machine which concerns on this invention, the flow volume of the refrigerant | coolant which flows in into each condenser can be adjusted so that the temperature of drying air may become a predetermined range. Thereby, the temperature of the drying air can be adjusted to a temperature suitable for drying clothes. Therefore, the drying time can be shortened. Furthermore, since the temperature of the drying air can be adjusted to a temperature suitable for drying the clothing according to the type of clothing, the clothing can be prevented from being damaged by heating.

  In the washing / drying machine according to the present invention, in the cooling operation, it can be adjusted so that more refrigerant flows into the second condenser than the first condenser. Thereby, since the temperature of drying air can be lowered | hung rapidly, the time which cooling of clothing can be shortened. Therefore, the efficiency of the drying operation can be increased.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same parts are denoted by the same reference numerals. Their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

[Embodiment 1]
In the washing and drying machine according to the present invention, the drying air can be heated by the first condenser without being cooled by the first evaporator, so that the temperature of the drying air can be quickly increased. it can. Moreover, by providing the dehumidifying part, it is possible to absorb moisture in the drying air. Thereby, the efficiency of drying operation can be raised.

FIG. 1 is a schematic view of a washing / drying machine 100 according to Embodiment 1 of the present invention as viewed from the side.
The washing / drying machine 100 will be described with reference to FIG.

  The washing / drying machine 100 includes a housing 1, a door 2 provided so that the housing opening 1 a can be opened and closed, and a water tank opening 3 a disposed inside the housing 1 and facing the housing opening 1 a. A water tank 3, a flexible door packing 4, a drum 5 having a drum opening 5a disposed inside the water tank 3 and facing the water tank opening 3a, and an electric motor 6 for driving the drum 5 to rotate. An annular liquid balancer 7 in which salt water or the like is enclosed, a drain pipe 8 for discharging the wash water supplied into the aquarium 3 to the outside of the aquarium 3, and lint of washing water drained from the aquarium 3 A drainage filter 9 that collects buttons and the like, a drainage hose 10 that is connected to the drainage filter 9 and drains washing water drained from the aquarium 3 to the outside of the housing 1, drainage from the aquarium 3, and the aquarium 3 Drain valve 11 to control the storage of water and drain pipe The impulse lines 12 to be continued, is connected to the connecting pipe 12, and a water level sensor 13 for detecting the water level in the water tank 3.

  The laundry dryer 100 further includes a drying fan 17 for circulating the drying air, a second evaporator 15 for cooling and dehumidifying the drying air from the drum 5, and a moisture for absorbing the drying air. A dehumidifying part 16 containing a dehumidifying agent such as zeolite or silica gel, a first condenser 18 for heating the drying air, a drying inlet temperature detecting part 28 attached to the drying air inlet 14a, and a drying air A drying outlet temperature detector 29 attached to the outlet 14b is provided as a main part. In FIG. 1, white arrows indicate the flow of drying air.

  The first condenser 18, the second evaporator 15, the compressor (not shown), the second condenser 20 and the first evaporator 22, which will be described later, provide a heat exchange circuit as will be described later. It is configured and functions as a heat pump.

  The water tank 3 is disposed with an inclination of about 15 ° so that the water tank opening 3 a side is higher than the bottom surface side. Further, the water tank opening 3 a is watertightly connected by the housing opening 1 a and the door packing 4.

  One end of the electric motor 6 is connected to the center of the bottom surface of the drum 5, and the electric motor 6 is connected to a drum shaft 5 b that rotatably supports the water tank 3. Then, the drum 5 is rotationally driven under the control of a control unit (not shown).

  Above the water tank 3, a drying path for circulating drying air for drying clothes put in the drum 5 is arranged. The drying path communicates with the inside of the drum 5 through the drying air inlet 14a, the second evaporator 15, the dehumidifying unit 16, the first condenser 18, and the drying air outlet 14b.

Here, the flow of the drying air will be described.
The drying air that has entered the drying air inlet 14 a from inside the drum 5 is cooled and dehumidified by the second evaporator 15. The cooled and dehumidified air is further dehumidified by the dehumidifying unit 16 and heated by heat generated by the moisture absorption of the dehumidifying unit 16. The air that has passed through the dehumidifying unit 16 is sent to the first condenser 18 and heated. The air that has passed through the first condenser 18 is blown into the drum 5 from the dry air outlet 14b. In this way, drying of the clothing proceeds. In FIG. 1, white arrows indicate such a flow of drying air.

  Note that the position of the drying fan 17 is not limited to the downstream of the dehumidifying unit 16 as long as it is in the drying path as described above, and may be, for example, the downstream of the first condenser 18.

  Further, based on the temperature detection results of the drying inlet temperature detection unit 28 attached to the drying air inlet 14a and the drying outlet temperature detection unit 29 attached to the drying air outlet 14b, detection of the progress of the drying process, which will be described later. Control for adjusting the refrigerant flow rate of the heat pump is performed.

  FIG. 2 is a schematic view of the washing / drying machine 100 according to Embodiment 1 of the present invention as viewed from a side different from that in FIG.

The washing / drying machine 100 will be further described with reference to FIG.
In FIG. 2, the housing 1 of the washing and drying machine 100 has a regeneration air intake port on the front side and a regeneration air outlet port 19 b that is a discharge port for regeneration air on the back surface. Note that an air filter 19a for preventing dust from entering is detachably disposed at the air intake.

  The washer / dryer 100 further includes a second condenser 20 for heating the regeneration air that has entered from the air filter 19a, a regeneration fan 21 for guiding the regeneration air to the dehumidifying unit 16, and a regeneration And a first evaporator 22 for cooling the air. In FIG. 2, white arrows indicate the air flow of the regeneration air.

  The dehumidifying unit 16 is given air heated by the second condenser 20. As a result, the dehumidifying unit 16 discharges the absorbed moisture, and the dehumidifying ability of the dehumidifying unit 16 is regenerated.

  Note that the regeneration path communicates with the outside of the housing 1 through an air filter 19a and a regeneration air outlet 19b.

Here, the flow of the regeneration air will be described.
Regeneration air that has entered the regeneration path from outside the housing 1 through the air filter 19 a is heated by the second condenser 20. The heated regeneration air is sent to the dehumidifying unit 16 by the regeneration fan 21, and the moisture absorbed by the dehumidifying unit 16 is discharged into the air and is cooled by the heat absorption due to dehumidification of the dehumidifying unit 16. . The regeneration air sent to the dehumidifying unit 16 is sent to the first evaporator 22 and cooled. The air that has passed through the first evaporator 22 is discharged out of the housing 1 from the regeneration outlet 19b. In FIG. 2, white arrows indicate such a flow of regeneration air.

  Note that the position of the regeneration fan 21 is not limited to the upstream of the dehumidifying unit 16 as long as it is in the regeneration path as described above, and may be, for example, the upstream of the second condenser 20.

FIG. 3 is a view of the cross section of the washing / drying machine 100 as viewed from above.
The washing / drying machine 100 will be further described with reference to FIG.

  In FIG. 3, shaded arrows indicate the flow of drying air, and white arrows indicate the flow of regeneration air.

  As shown in FIG. 3, the dehumidifying unit 16 is provided over both the drying path and the regeneration path. The dehumidifying unit 16 has a structure that is rotationally driven by a driving unit (not shown). A portion on the drying path side of the dehumidifying unit 16 that absorbs water vapor of the drying air is arranged on the regeneration path side by rotational driving. Then, the moisture absorption capacity is regenerated by the regeneration air, and is again disposed on the drying path side by rotation. Such an operation is repeated and the drying proceeds.

FIG. 4 is a configuration diagram of the heat pump 400.
The heat pump 400 will be described with reference to FIG.

  The washing / drying machine 100 includes a heat pump 400. The heat pump 400 includes a second evaporator 15, a first condenser 18, a first evaporator 22, a second condenser 20, a compressor 23, a condenser refrigerant flow rate adjustment valve 25, An evaporator refrigerant flow rate adjustment valve 26 and a check valve 27 are provided.

  As shown in FIG. 4, the refrigerant compressed by the compressor 23 is sent to the condenser refrigerant flow rate adjustment valve 25. The refrigerant flows into the first condenser 18 and the second condenser 20 at a predetermined ratio or one of them by the condenser refrigerant flow rate adjustment valve 25 controlled by the control unit, and further evaporates. The refrigerant flow rate adjusting valve 26 is sent. And the refrigerant | coolant which reached the refrigerant | coolant flow rate adjustment valve 26 for evaporators is each predetermined ratio to the 2nd evaporator 15 and the 1st evaporator 22 by the refrigerant | coolant flow rate adjustment valve 26 for evaporators controlled by the control part. Or flow into one of them, and are sent to the compressor 23 via the check valve 27.

  The refrigerant radiates heat to the outside by the first condenser 18 and the second condenser 20, and then absorbs heat by the second evaporator 15 and the first evaporator 22. And the refrigerant | coolant which absorbed heat is sent to the compressor 23, and is compressed again. The heat pump 400 repeats the above cycle. In FIG. 4, arrows indicate such a refrigerant flow.

  FIG. 5 is a flowchart showing a drying process by the washing / drying machine 100 according to the first embodiment.

  With reference to FIG. 5, the drying process of the washing / drying machine 100 having the above-described configuration will be described.

  In the description of this flowchart, the control unit controls the refrigerant flow rate adjusting valve 25 for the condenser so that the refrigerant flows through one of the first condenser 18 and the second condenser 20, but the other side. Alternatively, a smaller amount of refrigerant may be flowed than one. Similarly, when the refrigerant flow control valve 26 for the evaporator is controlled to flow the refrigerant to one of the second evaporator 15 or the first evaporator 22, it is less on the other side than the other. An amount of refrigerant may be flowed.

  In S <b> 500, the control unit controls the refrigerant flow rate adjustment valve 25 for the condenser and the refrigerant flow rate adjustment valve 26 for the evaporator so that the refrigerant flows through the first condenser 18 and the first evaporator 22.

  In step S <b> 502, the control unit activates the drying fan 17 and the regeneration fan 21. Here, an airflow through which the drying air circulates is generated in the drying path, and an airflow through which the regeneration air passes is generated in the regeneration path. As a result, the clothes are dried and the moisture absorption capacity of the dehumidifying part is simultaneously regenerated.

  Here, the drying air is heated by heat generated by moisture absorption by the dehumidifying unit 16 in addition to the first condenser 18. Moreover, since the drying air is not cooled by the second evaporator 15 by flowing the refrigerant through the first evaporator 22, the temperature of the drying air can be quickly raised to a predetermined temperature.

In S504, the control unit instructs the drying inlet temperature detection unit 28 and the drying outlet temperature detection unit 29 to start temperature detection. Hereinafter, the temperature detected by the drying inlet temperature detector 28 is T ₁ , and the temperature detected by the drying outlet temperature detector 29 is T ₂ .

In S506, the control unit determines whether the heating rate is equal to or lower than a preset heating rate α. The heating rate indicates the temperature change per unit time of the drying outlet temperature T ₂ of the temperature sensing unit 29 has detected. That is, assuming that the temperature detected by the drying outlet temperature detector 29 at time t is T ₂ ^t and the temperature detected at time t ′ is T ₂ ^{t ′} , the heating rate is (T ₂ ^t −T _2). ^{t ′} ) / (t′−t).

  In the initial stage of the drying process, the heating rate tends to be high. However, as the temperature of the drying air approaches the temperature of the first condenser 18, the heating rate decreases. In the present embodiment, when the heating rate is less than or equal to α, it is determined that the constant rate drying period has been reached. The transition to the constant rate drying period may be determined based on whether the difference between the temperature of the first condenser 18 and the temperature detected by the drying outlet temperature detector 29 is equal to or less than a preset value. You may judge by another method.

  In S506, if it is determined that the heating rate is not α or less (NO in S506), the control unit calculates the heating rate again and determines whether it is α or less (S506).

  If it is determined that the heating rate is less than or equal to α (YES in S506), the control unit controls the first condenser 18 and the second condenser flow rate adjustment valve 25 for the condenser and the refrigerant flow rate adjustment valve 26 for the evaporator. The refrigerant is controlled to flow through the evaporator 15 (S508).

In S510, the control unit, the difference between the temperature T ₂ of the drying outlet temperature detecting unit 29 detects the drying temperature T ₁ of the inlet temperature detecting unit 28 detects and judges whether a preset value β or less.

  In the constant rate drying period, if the drying of the clothing proceeds, the moisture contained in the clothing is not evaporated. For this reason, since the air blown into the drum is not cooled by the heat of evaporation, the temperature difference between the dry air inlet 14a and the dry air outlet 14b becomes small. In the present embodiment, when this temperature difference is equal to or less than a preset value, it is determined that the drying of the clothes has been completed.

If it is determined that the difference between temperature T ₂ detected by drying outlet temperature detection unit 29 and temperature T ₁ detected by drying inlet temperature detection unit 28 is not less than a preset value β (NO in S510). control unit determines whether the temperature T or _a greater than temperature T ₂ of the drying outlet temperature detecting unit 29 has detected previously set (S512).

When it is judged that the temperature _{T 2} of the drying outlet temperature detecting unit 29 has detected is equal to or less than the temperature _{T a} previously set (at S512, NO), the control unit performs again the determination of S510. When it is judged that the larger the temperature _{T a} of temperature _{T 2} is set in advance (at S512, YES), the control unit, to the condenser the refrigerant flow rate adjusting valve 25 and the evaporator refrigerant flow regulating valve 26, the second Control is performed so that the refrigerant flows through the condenser 20 and the second evaporator 15 (S514). Here, the drying air to be blown into the drum, because it is not heated by the first condenser 18, temperature T ₂ of the drying outlet temperature detecting unit 29 detects goes down.

In S516, the control unit determines temperature T ₂ of the drying outlet temperature detecting unit 29 has detected, whether it is less than the temperature T _b preset. Incidentally, _{T b} is a value smaller than _{T a.}

Temperature _{T 2} of the drying outlet temperature detecting unit 29 has detected, it is judged that the temperature _{T b} is larger than a preset (at S516, NO), the control unit again performs the judgment of S516.

Temperature _{T 2} of the drying outlet temperature detecting unit 29 has detected, it is judged that the less the temperature _{T b} which is set in advance (at S516, YES), the control unit performs the process of S508. Here, the drying air is blown into the drum, because it is heated again by the first condenser 18, temperature T ₂ of the drying outlet temperature detecting unit 29 detects rises.

As described above, in the constant rate drying period, the temperature of the drying air blown into the drum falls within a preset temperature range by controlling the flow rate of the refrigerant flowing into each condenser and each evaporator. Can be adjusted. The user can also change the set temperature depending on the type of clothes to be dried. For example, if the garment to be dried is a weak synthetic fibers in heat such as acrylic, 60 ° C. The T _a, may be set T _b as 58 ° C..

On the other hand, the difference between the temperature T ₂ of the drying outlet temperature detecting unit 29 detects the drying temperature T ₁ of the inlet temperature detecting unit 28 has detected at them if (S510 determined to be equal to or less than β preset value, YES), the control unit performs the process of S518. Here, as described above, the control unit determines that the drying of the clothes has been completed, and performs control for cooling the inside of the drum.

  In S <b> 518, the control unit controls the refrigerant flow rate adjustment valve 25 for the condenser and the refrigerant flow rate adjustment valve 26 for the evaporator so that the refrigerant flows through the second condenser 20 and the second evaporator 15. As described above, since the drying air blown into the drum is not heated by the first condenser 18, the air temperature in the drum is lowered.

In S520, the control unit determines whether the temperature T ₁ of the drying inlet temperature detecting unit 28 has detected is equal to or less than the temperature T _c preset. Incidentally, _{T c} is smaller than the _{T a} and _{T b.} Here, if the temperature is equal to or lower than the preset temperature _Tc , it is determined that the inside of the drum has been cooled.

If it is determined drying temperature _{T 1} of the inlet temperature detecting unit 28 has detected greater than _{T c} (at S520, NO), it is determined S520 again.

If it is determined that temperature T ₁ detected by drying inlet temperature detector 28 is equal to or lower than T _c (YES in S520), operation of compressor 23 is stopped, and drying inlet temperature detector 28 and drying outlet temperature are stopped. Temperature detection by the detection unit 29 is terminated (S522).

  Next, in S524, the control unit stops the operation of the drying fan 17 and the regeneration fan 21. This is the end of the drying process.

  In the drying step, the regeneration air that has flowed in from the air filter 19a is supplied to the dehumidifying unit 16. At this time, if the refrigerant flows into the second condenser 20, the regeneration air is heated. The dehumidifying unit 16 recovers its moisture absorption capacity by the regeneration air. Further, the regeneration air that has passed through the dehumidifying unit 16 is discharged out of the housing 1 through the regeneration air outlet 19b. At this time, if the refrigerant flows into the first evaporator 22, the regeneration air is dehumidified.

6, in the drying process shown in FIG. 5 is a diagram for explaining the change in temperature T ₁ and temperature T ₂ as an example.

With reference to FIG. 6, the state of the temperature change in the drying process shown in FIG. 5 will be described.
In FIG. 6, the vertical axis represents temperature and the horizontal axis represents time. The upper curve indicates the temperature T ₁ and the lower curve indicates the temperature T ₂ .

In the initial stage of the drying process, as shown in S500, since the refrigerant flows into the first condenser 18 and the first evaporator 22, the drying air blown into the drum is rapidly heated, and the drying outlet temperature T ₂ of the temperature detection unit 29 detects rises. Further, most of the heat is used to raise the temperature of the clothing, and the temperature T ₁ detected by the drying inlet temperature detection unit 28 increases as the clothing temperature rises.

  At time t1, the control unit determines that the heating rate is equal to or less than α, and the first condenser is supplied to the condenser refrigerant flow rate adjustment valve 25 and the evaporator refrigerant flow rate adjustment valve 26 as shown in S508. 18 and the second evaporator 15 are controlled to flow refrigerant.

  Here, in the drying path, the drying air exchanges heat with the first condenser 18 and the second evaporator 15 into which the refrigerant flows. Moreover, since energy is input by the compressor 23 in the heat pump 400, the temperature in the drying path increases.

Then, at time t2, the control unit, as shown in S512, temperature _{T 2} of the drying outlet temperature detecting unit 29 has detected is determined to be greater than _{T a.} And as shown by S516, it controls so that a refrigerant | coolant may flow through the 2nd condenser 20 and the 2nd evaporator 15 with respect to the refrigerant | coolant flow rate adjustment valve 25 for condensers and the refrigerant | coolant flow rate adjustment valve 26 for evaporators. Thereby, the temperature of the drying air blown into the drum is lowered.

At time t3, the control unit, as shown in S516, temperature T ₂ of the drying outlet temperature detecting unit 29 has detected is determined to be less than T _b. And as shown by S508, it controls so that a refrigerant | coolant may be flowed through the 1st condenser 18 and the 2nd evaporator 15 with respect to the refrigerant | coolant flow rate adjustment valve 25 for condensers, and the refrigerant | coolant flow rate adjustment valve 26 for evaporators. This increases the temperature of the drying air blown into the drum.

The temperature difference between T ₁ and T ₂ until the following beta, the same operation as the time t4 and t5 are repeated.

At time t6, the control unit determines that the temperature difference between T ₁ and T ₂ is equal to or less than β. Then, as shown in S518, the condenser refrigerant flow rate adjustment valve 25 and the evaporator refrigerant flow rate adjustment valve 26 are controlled to flow the refrigerant through the second condenser 20 and the second evaporator 15. Thereby, since the drying air blown into the drum is not heated by the first condenser 18, the air temperature in the drum is lowered.

In time t7, the control unit, the drying inlet temperature detecting unit 28 is the temperature T ₁ is determined to be less than T _c to detect. That is, the cooling of the clothing is finished. This is the end of the drying process.

  As described above, in the washing and drying machine according to the present embodiment, the drying air can be heated by the first condenser without being cooled by the first evaporator. The temperature can be raised quickly. In addition, by providing the dehumidifying unit, moisture in the drying air can be absorbed, and the drying air can be heated by heat generated by moisture absorption. Thereby, the efficiency of drying operation can be raised.

  Moreover, in the washing / drying machine in this Embodiment, the drying air discharged | emitted from the inside of a drum is blown in in a drum via a dehumidification part and a 1st condenser. Thereby, since the temperature in a drum can be raised rapidly, drying time can be shortened. Therefore, the efficiency of the drying operation can be increased.

  Moreover, in the washing / drying machine in this Embodiment, the flow volume of the refrigerant | coolant which flows in into each condenser can be adjusted with the refrigerant | coolant flow volume adjustment valve for condensers so that the temperature of drying air may become a predetermined range. Thereby, the temperature of the drying air can be adjusted to a temperature suitable for drying clothes. Therefore, the drying time can be shortened. Furthermore, since the temperature of the drying air can be adjusted to a temperature suitable for drying the clothing according to the type of clothing, the clothing can be prevented from being damaged by heating.

  In the washing / drying machine according to the present embodiment, in the cooling operation, the refrigerant flow rate adjustment valve for the condenser can be adjusted so that more refrigerant flows into the second condenser than the first condenser. . Thereby, since the temperature of drying air can be lowered | hung rapidly, the time which cooling of clothing can be shortened. Furthermore, since the regeneration air heated by the second condenser is given to the dehumidifying part, the regeneration of the moisture absorption capacity of the dehumidifying part can be promoted. Therefore, the efficiency of the drying operation can be increased.

  Further, the washing / drying machine according to the present embodiment has a regeneration path for regenerating the dehumidifying part, and absorbs moisture of the drying air by the regeneration air heated by the second condenser, thereby absorbing moisture. The moisture absorption capacity of the dehumidified part that has fallen can be regenerated. Thereby, the efficiency of drying operation can be raised.

  Moreover, in the washing / drying machine in this Embodiment, the airflow in a drying path | route and a reproduction | regeneration path | route can be generated simultaneously. Thereby, since the dehumidifying part can be regenerated during the drying operation, the drying operation can be performed while maintaining the moisture absorption capability of the dehumidifying part. Therefore, the efficiency of the drying operation can be increased.

[Embodiment 2]
The washing / drying machine according to the present invention can execute the drying process even by control other than the flowchart shown in FIG. 5 of the first embodiment. In the present embodiment, the drying process by the control different from the flowchart shown in FIG.

  FIG. 7 is a flowchart showing a drying process by the washing / drying machine 100 according to the second embodiment.

With reference to FIG. 7, the drying process of the washing dryer 100 will be described.
7 differs from the flowchart shown in FIG. 5 only in the process of S708. Since other processes are the same, description will not be repeated.

  In step S <b> 708, the control unit controls the refrigerant flow rate adjustment valve 25 for the condenser and the refrigerant flow rate adjustment valve 26 for the evaporator so that the refrigerant flows through the first condenser 18 and the first evaporator 22.

  Thereby, even if the heating rate is α or less in the determination of S706, the drying air is not cooled by the second evaporator 15 when the temperature of the drying air blown into the drum is low. The heating is continued by the first condenser 18.

Also, if the temperature T ₂ is less than T _b the drying outlet temperature detecting unit 29 has detected in the determination of S716, the drying air to blown into the drum, without being cooled by the second evaporator 15, the first Therefore, the drying air can be adjusted to a preset temperature range in a short time.

  Moreover, in the washing / drying machine in the present embodiment, the flow rate of the refrigerant flowing into each evaporator can be adjusted by the evaporator refrigerant flow rate adjustment valve so that the temperature of the drying air falls within a predetermined range. Thereby, the temperature of the drying air can be adjusted to a temperature suitable for drying clothes. Therefore, since the temperature of the drying air can be adjusted to a temperature suitable for drying the clothing according to the type of clothing, damage to the clothing due to heating can be prevented.

  Furthermore, in the washing and drying machine in the present embodiment, the drying air flow is adjusted by adjusting the flow rate of the refrigerant flowing into each evaporator by the evaporator refrigerant flow rate adjustment valve so that the temperature of the drying air is within a predetermined range. The working air can be quickly adjusted to a temperature suitable for drying. Therefore, in addition to the effect exhibited by the washer / dryer according to the first embodiment, the time required for temperature adjustment can be shortened.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

It is the schematic which looked at the washing / drying machine 100 which concerns on Embodiment 1 of this invention from the side. It is the schematic which looked at the washing-drying machine 100 which concerns on Embodiment 1 of this invention from the side different from FIG. It is the figure which looked at the cross section of the washing dryer 100 from the upper direction. 2 is a configuration diagram of a heat pump 400. FIG. 3 is a flowchart showing a drying process by the washing and drying machine 100 according to the first embodiment. In the drying process shown in FIG. 5 is a diagram for explaining the change in temperature T ₁ and temperature T ₂ as an example. It is the flowchart which showed the drying process by the washing dryer 100 which concerns on Embodiment 2. FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Case, 1a Case opening part, 2 door, 3 water tank, 3a water tank opening part, 4 door packing, 5 drum, 5a drum opening part, 5b drum shaft, 6 electric motor, 7 liquid balancer, 8 drainage pipe, 9 drainage Filter, 10 Drain hose, 11 Drain valve, 12 Pressure guiding pipe, 13 Water level sensor, 14a Dry air inlet, 14b Dry air outlet, 15 Second evaporator, 16 Dehumidifier, 17 Drying fan, 18 First condenser , 19a Air filter, 19b Regeneration air outlet, 20 Second condenser, 21 Regeneration fan, 22 First evaporator, 23 Compressor, 25 Condenser refrigerant flow rate adjustment valve, 26 Evaporator refrigerant flow rate adjustment valve, 27 Check valve, 100 washer / dryer, 400 heat pump.

Claims (10)

A housing,
A water tank enclosed in the housing;
A drum contained in the water tank;
A heat exchange circuit for sequentially circulating the refrigerant to the compressor, the first condenser, and the first evaporator;
A first ventilation path arranged so that drying air blown into the drum exchanges heat with the first condenser;
A second ventilation path different from the first ventilation path,
The first evaporator exchanges heat with air passing through the second ventilation path,
A blowing means for generating an air flow in the first ventilation path and the second ventilation path;
Moisture absorbing means for dehumidifying the drying air;
A washing and drying machine, further comprising a control unit for controlling the blowing means. The first ventilation path is a path in which the drying air discharged from the drum passes through the first condenser, which is the moisture absorption means and a heat source for drying, and blows into the drum. Yes,
The washing / drying machine according to claim 1, wherein the control unit controls the blowing unit so that the drying air generates an air current that passes through the first ventilation path. The heat exchange circuit further includes a second condenser disposed on the second ventilation path,
Refrigerant flow rate adjusting means for changing the flow rate of the refrigerant flowing through each of the first condenser and the second condenser;
Temperature detecting means for detecting the temperature of the drying air blown into the drum,
In the drying operation, when the temperature of the drying air detected by the temperature detection unit is equal to or higher than a predetermined temperature range, the control unit performs the second condensation rather than the first condenser. The refrigerant flow rate adjusting means is controlled so that a large amount of the refrigerant flows through the condenser, and the temperature of the drying air falls below the predetermined temperature range, so that the first condenser is more than the second condenser. The washing / drying machine according to claim 2, wherein the refrigerant flow rate adjusting means is controlled so that a large amount of the refrigerant flows through the condenser.   The control unit controls the refrigerant flow rate adjusting unit so that more refrigerant flows through the second condenser than through the first condenser during a cooling operation for cooling the inside of the drum. Item 4. A washing and drying machine according to Item 3. The heat exchange circuit further includes a second condenser disposed on the second ventilation path,
Refrigerant flow rate adjusting means for changing the flow rate of the refrigerant flowing through each of the first condenser and the second condenser;
Temperature detecting means for detecting the temperature of the drying air blown into the drum,
In the drying operation, when the temperature of the drying air detected by the temperature detection unit is equal to or higher than a predetermined temperature range, the control unit performs the second condensation rather than the first condenser. The refrigerant flow rate adjusting means is controlled so that a large amount of the refrigerant flows through the condenser, and the temperature of the drying air falls below the predetermined temperature range, so that the first condenser is more than the second condenser. The washing / drying machine according to claim 1, wherein the refrigerant flow rate adjusting means is controlled so that a large amount of the refrigerant flows through the condenser. The second ventilation path is a path through which regeneration air for regenerating the moisture absorbing means passes through the second condenser and the moisture absorbing means, which are regeneration heat sources,
The moisture absorbing means is provided on the first ventilation path and the second ventilation path,
The washing / drying machine according to claim 5, wherein the control unit controls the blowing unit so that the regeneration air generates an air current that passes through the second ventilation path.   The washing / drying machine according to claim 6, wherein the control unit controls the air blowing unit to simultaneously generate an air flow in the first ventilation path and the second ventilation path. The heat exchange circuit further includes a second evaporator disposed on the first ventilation path,
The refrigerant flow rate adjusting means further includes means for changing the flow rate of the refrigerant flowing in each of the first evaporator and the second evaporator,
In response to the determination that the temperature of the drying air detected by the temperature detection means has become equal to or higher than a predetermined temperature range during the drying operation, the control unit is more than the first evaporator than the first evaporator. The refrigerant flow rate adjusting means is controlled so that a large amount of the refrigerant flows through the second evaporator, and the temperature of the drying air detected by the temperature detecting means is determined to be equal to or lower than the predetermined temperature range. The washing / drying machine according to claim 5, wherein the refrigerant flow rate adjusting means is controlled so that more refrigerant flows through the first evaporator than through the second evaporator.   The control unit controls the refrigerant flow rate adjusting unit so that more refrigerant flows through the second evaporator than the first evaporator during a cooling operation for cooling the inside of the drum. Item 9. A washing and drying machine according to Item 8. The heat exchange circuit further includes a second condenser disposed on the second ventilation path,
A refrigerant flow rate adjusting means for changing a flow rate of the refrigerant flowing through each of the first condenser and the second condenser;
The control unit controls the refrigerant flow rate adjusting unit so that more refrigerant flows through the second condenser than through the first condenser during a cooling operation for cooling the inside of the drum. Item 2. A washing and drying machine according to item 1.

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