JP2011120778A - Drying machine - Google Patents

Abstract

A dryer for efficiently drying an object to be dried is provided.
A clothes washing and drying machine includes a supply path for supplying air to a rotary drum, a discharge path for discharging air from the rotary drum, a blower, and a heater. 150, a supply-side temperature / humidity sensor 171 for detecting absolute humidity in the supply path 120, and a discharge-side temperature / humidity sensor 172 for detecting absolute humidity in the discharge path 130. When the difference between the absolute humidity detected by 171 and the absolute humidity detected by the discharge-side temperature / humidity sensor 172 is larger than a predetermined value, the blower 140 is driven, the heater 150 is stopped, and the supply-side temperature is When the difference between the absolute humidity detected by the humidity sensor 171 and the absolute humidity detected by the discharge-side temperature / humidity sensor 172 is equal to or less than a predetermined value, the blower 1 And 0 and the heater 150 is configured to be driven.
[Selection] Figure 1

Description

  The present invention relates to a dryer.

  2. Description of the Related Art Conventionally, some dryers perform drying by blowing normal temperature air to an object to be dried and drying by blowing heated air.

  For example, Japanese Patent No. 4197619 (Patent Document 1) describes a washing and drying machine that performs a “warm air drying” operation and a “room temperature drying” operation as drying operations. In this washing / drying machine, for example, a “normal temperature drying” operation is performed at the beginning of the drying process, and a “warm air drying” operation is performed thereafter. Also, depending on the difference between the weight of the clothes before washing and the weight of the clothes containing water after washing, the execution time of the “normal temperature drying” operation and the execution time and time of the “hot air drying” operation in the drying process Set distribution. Further, the higher the outside air temperature, the longer the time distribution for executing the “room temperature drying” operation, or the lower the humidity, the longer the execution time of the “room temperature drying” operation.

  Japanese Unexamined Patent Application Publication No. 2009-72494 (Patent Document 2) describes a dryer that controls the air blowing means in a predetermined pattern according to the progress of the drying operation and variably controls the air volume. In this dryer, for example, in the initial stage of the drying operation, while rotating the rotating drum at a high speed, the air volume from the blowing means is controlled to be small, the output from the heating means is controlled strongly, and the blowing means is started from the middle of the drying operation. The air volume from the air is controlled to be large and the output of the heating means is controlled to be weak.

  Japanese Patent Application Laid-Open No. 2009-101206 (Patent Document 3) discloses a step of rotating a washing / dehydrating tub while operating the blower fan with the heater turned off, and a washing / dehydrating tub while operating the blowing fan and the heater. A washing / drying machine having a process of rotating, a process of rotating a rotary blade reciprocally while operating a blower fan and a heater is described. In this washing / drying machine, the drying process is set according to the ambient temperature, humidity, and the quality of the laundry.

Japanese Patent No. 4197619 JP 2009-72494 A JP 2009-101206 A

  However, the washing and drying machine described in Japanese Patent No. 4197619 (Patent Document 1), the drying machine described in Japanese Patent Application Laid-Open No. 2009-72494 (Patent Document 2), and Japanese Patent Application Laid-Open No. 2009-101206 (Patent Document 3). In any of the washing / drying machines described in), the object to be dried cannot be efficiently dried.

  For example, when the air volume and the heater operation are switched according to the ambient temperature, even if the ambient temperature is high, sufficient drying cannot be performed if the ambient humidity is low. Also, when switching the air volume and heater operation according to the ambient humidity, even if the ambient humidity is low, if the moisture contained in the object to be dried is low, such as in the second half of the drying process, the heater Even if the air is blown as it is without operating, the moisture of the object to be dried cannot be completely removed. As described above, in the conventional dryer, the object to be dried cannot be efficiently dried according to the degree of drying of the object to be dried, so that electric power is wasted or the drying process takes a long time. There is.

  Then, the objective of this invention is providing the dryer which can dry a to-be-dried target object efficiently according to the drying degree of a to-be-dried target object.

  The dryer according to the present invention includes a container, a supply path, a discharge path, a blower, a heating unit, a first detection unit, and a second detection unit. The container accommodates an object to be dried. The supply path is for supplying air into the container. The discharge path is for discharging air from the inside of the container. A ventilation part is for sending out the air in a supply path. A heating part is for heating the air in a supply path. The first detector is for detecting absolute humidity in the supply path. The second detector is for detecting the absolute humidity in the discharge path.

  When the difference between the absolute humidity detected by the first detection unit and the absolute humidity detected by the second detection unit is greater than a predetermined value, the air blower is driven in the dryer configured as described above. Then, the driving of the heating unit is stopped. When the difference between the absolute humidity detected by the first detection unit and the absolute humidity detected by the second detection unit is a predetermined value or less, the blower unit and the heating unit are configured to be driven. Yes.

  FIG. 1 is a diagram schematically showing the relationship between the absolute humidity of the air in the supply path, the absolute humidity of the air in the discharge path, and the dryness when the temperature is substantially constant.

  As shown in FIG. 1, the absolute humidity of the air in the supply channel is considered to be substantially constant throughout the drying process. On the other hand, the absolute humidity of the air in the discharge path decreases with time after the start of the drying process. As the absolute humidity of the air in the discharge path decreases, the dryness of the object to be dried increases. When the dryness of the object to be dried reaches 100%, that is, at the end of the drying process, the absolute humidity of the air in the supply path is equal to the absolute humidity of the air in the discharge path. Thus, in the initial section A of the drying process, the difference in absolute humidity between the air in the supply path and the air in the discharge path continues to be large, and thereafter, in section B, the difference in absolute humidity gradually decreases. Go. In the section C near the end of drying, the evaporation of moisture from the object to be dried is minimal, so the difference in absolute humidity is small. As the difference between the absolute humidity of the air in the supply path and the absolute humidity of the air in the discharge path becomes smaller, the dryness of the object to be dried increases.

  Therefore, when the difference between the absolute humidity detected by the first detector and the absolute humidity detected by the second detector is larger than a predetermined value, the blower is driven and the heating unit is stopped. . In such a case, the air in the supply path is sufficiently dry compared to the object to be dried, so that the air in the supply path is not heated and directly contacts the object to be dried, Water can be sufficiently removed from the object to be dried. Even if the temperature of the air supplied to the object to be dried is low, if the difference between the absolute humidity of the air in the supply path and the absolute humidity of the air in the discharge path is greater than a predetermined value, Even if the air is supplied to the object to be dried as it is, moisture can be removed from the object to be dried.

  On the other hand, when the difference between the absolute humidity detected by the first detection unit and the absolute humidity detected by the second detection unit is equal to or less than a predetermined value, the blower unit and the heating unit are driven. In such a case, it cannot be said that the air in the supply path is sufficiently dry as compared with the object to be dried. Therefore, by heating the air in the supply path and then supplying it to the object to be dried, moisture can be further removed from the object to be dried.

  Thus, based on the difference between the absolute humidity of the air in the supply path and the absolute humidity of the air in the discharge path, the air in the supply path is supplied to the object to be dried as it is without being heated, or the supply path By switching whether the air inside is heated and then supplied to the object to be dried, optimum drying can be performed according to the degree of dryness of the object to be dried, and energy saving can be realized. For example, when it is not necessary to heat the air in the supply path, the power consumed in the heating unit can be reduced by supplying the air in the supply path to the object to be dried as it is. Also, if the air in the supply path cannot be sufficiently dried even if it is supplied to the object to be dried as it is, the air heated by the heating unit is supplied to the object to be dried. The time required for the whole can be shortened, resulting in energy saving.

  By doing in this way, the dryer which can dry a to-be-dried target object efficiently according to the drying degree of a to-be-dried target object can be provided.

  When the difference between the absolute humidity detected by the first detector and the absolute humidity detected by the second detector is greater than a predetermined value, the dryer according to the present invention is sent out by the blower. It is preferable that the air amount be relatively small.

  When the air in the supply path is sufficiently dry compared to the object to be dried, water is removed from the object to be dried even if the amount of air sent out by the blower is relatively small. can do. By doing in this way, the electric power consumed can be reduced.

  The dryer according to the present invention determines the amount of air sent out by the blower based on the change over time of the difference between the absolute humidity detected by the first detector and the absolute humidity detected by the second detector. It is preferably configured to adjust.

  For example, in the latter half of the drying process, the amount of time change of the difference between the absolute humidity detected by the first detector and the absolute humidity detected by the second detector is small. In such a case, even if the air flow rate is increased, the dryness of the object to be dried cannot be increased. Therefore, for example, in such a case, the power consumption can be reduced by reducing the blown air amount as compared with the case of keeping the blown air amount.

  As described above, according to the present invention, it is possible to provide a dryer that can efficiently dry an object to be dried according to the degree of drying of the object to be dried.

It is a figure which shows typically the relationship between the absolute humidity of the air in a supply path when the temperature is substantially constant, the absolute humidity of the air in a discharge path, and a dryness. It is a figure showing typically the whole washing machine concerning one embodiment of the present invention. It is a block diagram which shows the control relevant structure of the washing machine which concerns on one embodiment of this invention. It is a flowchart which shows each process in order in the drying operation of the washing machine which concerns on one embodiment of this invention. It is a flowchart which shows each process in the ventilation function force control driving | operation of the washing machine which concerns on one embodiment of this invention in order. It is a figure which shows typically the relationship between the quantity of the air sent out by an air blower, the difference of the absolute humidity detected by the supply side temperature / humidity sensor and the absolute humidity detected by the discharge side temperature / humidity sensor, and the dehumidification amount. .

  An embodiment of the present invention will be described below with reference to the drawings.

  As shown in FIG. 2, a clothes washing / drying machine 1 as a drying machine according to one embodiment of the present invention is entirely covered with a casing 100. In FIG. 2, the left side is the front side of the clothes washing and drying machine 1, and the right side in FIG. 2 is the back side of the clothes washing and drying machine 1.

  Inside the housing 100 of the clothes washer / dryer 1 are mainly an outer tub 101, a rotating drum 110 as a container rotatably supported in the outer tub 101, and a driving unit 102 for rotating the rotating drum 110. A supply path 120, a discharge path 130, a blower 140 as a blower unit disposed in the supply path 120, a heater 150 as a heating unit disposed in the supply path 120, and a supply-side temperature and humidity sensor as a first detection unit 171, a discharge-side temperature / humidity sensor 172 as a second detection unit, and a control unit.

  A large number of small holes 111 are formed in the peripheral wall surface of the rotating drum 110. The inside of the outer tub 101 and the inside of the rotating drum 110 are communicated with each other by a small hole 111 formed in the rotating drum 110. For example, clothing is accommodated in the rotating drum 110 as an object to be dried.

  The drive unit 102 is for rotating the rotary drum 110 during washing.

  The supply path 120 extends from the back surface of the housing 100 of the clothes washer / dryer 1 to the front side of the housing 100 through the upper portion inside the housing 100. The intake port 121 of the supply path 120 is formed on the back surface of the housing 100. The supply port 122 of the supply path 120 is opened toward the inside of the rotary drum 110.

  The discharge path 130 is connected to the bottom of the outer tub 101 and extends toward the back surface of the casing 100 of the clothes washer / dryer 1. The exhaust port 131 of the discharge path 130 is formed adjacent to the intake port 121 of the supply path 120 on the back surface of the housing 100.

  A damper 160 is disposed at the intake port 121 of the supply path 120 and the exhaust port 131 of the discharge path 130. The damper 160 is for opening or closing the intake port 121 of the supply path 120 and the exhaust port 131 of the discharge path 130. In FIG. 2, a state in which the damper 160 opens the intake port 121 of the supply path 120 and the exhaust port 131 of the discharge path 130 is indicated by a solid line, and the intake port 121 of the supply path 120 and the exhaust port 131 of the discharge path 130 are connected. The closed state is indicated by a two-dot chain line. When the damper 160 closes the intake port 121 and the exhaust port 131, the discharge path 130 and the supply path 120 are communicated, and the air supplied from the supply path 120 into the rotary drum 110 passes through the discharge path 130 and the supply path 120. A circulation path returning to is formed.

  The blower 140 is a turbo fan, and sends out air in the supply path 120 while compressing it. The heater 150 heats the air in the supply path 120.

  The supply side temperature / humidity sensor 171 detects the temperature of air and the absolute humidity in the vicinity of the intake port 121 of the supply path 120. The discharge side temperature / humidity sensor 172 detects the temperature and absolute humidity of the air in the vicinity of the exhaust port 131 of the discharge path 130.

  As shown in FIG. 3, the clothes washer / dryer 1 includes, as control-related components, a supply-side temperature / humidity sensor 171, a discharge-side temperature / humidity sensor 172, a control unit 180, a blower 140, a heater 150, and a damper 160. With.

  The supply-side temperature / humidity sensor 171 and the discharge-side temperature / humidity sensor 172 detect the temperature and absolute humidity in the supply path 120 and the discharge path 130, respectively, and transmit signals to the control unit 180. Based on the temperature and absolute humidity detected by the supply-side temperature / humidity sensor 171 and the discharge-side temperature / humidity sensor 172, the control unit 180 determines the absolute humidity of the air in the supply path 120 and the absolute humidity of the air in the discharge path 130. And calculate the difference. The control unit 180 transmits a control signal to the blower 140, the heater 150, and the damper 160 based on the calculated absolute humidity difference.

  Operation | movement of the clothes washing dryer 1 comprised as mentioned above is demonstrated.

  First, when washing clothes with the clothes washing / drying machine 1, water is stored in the outer tub 101. Since many small holes 111 are formed on the peripheral wall surface of the rotating drum 110, when water is stored in the outer tub 101, the water also enters the rotating drum 110. By rotating the rotating drum 110 while water is stored in the outer tub 101, clothes stored in the rotating drum 110 are washed with water.

  At the end of washing, water in the outer tub 101 is discharged from the drain hose 103 to the outside of the housing 100.

  Next, when clothes are dried by the clothes washing / drying machine 1, as shown in FIG. 4, the damper 160 opens the intake port 121 of the supply path 120 and the exhaust port 131 of the discharge path 130 in step S001. The control unit 180 controls the damper 160.

  In step S002, a preliminary drying operation is performed. The blower 140 is controlled to blow with the maximum air volume, and air is sent into the supply path 120. When the blower 140 is driven, air is sent in the direction indicated by the arrow in FIG. The air sent into the supply path 120 flows into the rotary drum 110 through the outer tub 101 and comes into contact with clothing stored in the rotary drum 110. The air in contact with the clothing flows out into the outer tub 101 again from the small hole 111 of the rotating drum 110, passes through the discharge path 130, and is exhausted from the exhaust port 131 to the outside of the housing 100.

  In addition, since a turbo fan is used as the blower 140, the air is compressed and the temperature rises, so that the air in the supply path 120 can contain more water vapor than in the case where the air is not compressed. Become.

  In step S003, the temperature and humidity are measured. The supply-side temperature / humidity sensor 171 and the discharge-side temperature / humidity sensor 172 detect the temperature and absolute humidity in the supply path 120 and the discharge path 130, respectively, and transmit signals to the control unit 180. The control unit 180 stores the absolute humidity detected by the supply-side temperature / humidity sensor 171 as the absolute humidity of the intake air as the value a, and the absolute humidity detected by the discharge-side temperature / humidity sensor 172 as the absolute humidity of the exhaust gas as the value b. Remember.

  In step S004, the control unit 180 obtains the difference between the absolute humidity of the intake air and the absolute humidity of the exhaust gas from the difference between the value a and the value b, and stores the obtained absolute humidity difference as the value c.

  In step S005, control unit 180 determines whether or not the absolute humidity difference stored as value c is greater than 0.003 kg / kg (DA). If the difference in absolute humidity stored as the value c is greater than 0.003 kg / kg (DA) as a predetermined value, the process proceeds to step S006 and a room temperature drying operation is performed. If the difference in absolute humidity stored as the value c is 0.003 kg / kg (DA) or less as the predetermined value, the process proceeds to step S007 to perform the warm air drying operation.

  In step S006, a room temperature drying operation is performed. The control unit 180 drives the blower 140 and stops driving the heater 150. When performing step S003 for the first time, since the heater 150 is stopped, the drive of the blower 140 is continued as it is. The control unit 180 also controls the damper 160 so that the damper 160 opens the intake port 121 of the supply path 120 and the exhaust port 131 of the discharge path 130. By doing so, air outside the casing 100 of the clothes washer / dryer 1 is supplied into the rotary drum 110 from the air inlet 121.

  The air outside the housing 100 is sufficiently dry compared to the clothing inside the rotating drum 110. The air supplied into the rotary drum 110 removes moisture from the clothing, flows out of the housing 100 through the exhaust passage 131 through the discharge path 130.

  In step S007, a hot air drying operation is performed. The control unit 180 drives the heater 150 while driving the blower 140. In addition, the control unit 180 controls the damper 160 so that the damper 160 closes the intake port 121 of the supply path 120 and the exhaust port 131 of the discharge path 130 so that the discharge path 130 and the supply path 120 communicate with each other. The damper 160 is in a state indicated by a two-dot chain line in FIG. By doing so, the air heated by the heater 150 and supplied into the rotary drum 110 is discharged into the discharge path 130 and then flows into the supply path 120 again, and is heated by the heater 150 and heated by the rotary drum. 110 is supplied. By doing in this way, the temperature of the air supplied in the rotating drum 110 can be raised.

  While the hot air drying operation is performed, tap water is caused to flow in the discharge passage 130. The moist air discharged from the rotating drum 110 into the discharge path 130 is dehumidified in the discharge path 130 by heat exchange with tap water. The water removed from the air in the discharge path 130 and the tap water flowed in the discharge path 130 are discharged to the outside of the housing 100 through the drain hose 103.

  Next, as shown in FIG. 5, the case where the capability of the blower 140 is controlled will be described.

  In step S <b> 101, the rotation speed of the blower 140 is controlled to the maximum in order to blow the blower 140 with the maximum air volume.

  In step S102, temperature and humidity are measured. The supply-side temperature / humidity sensor 171 and the discharge-side temperature / humidity sensor 172 detect the temperature and absolute humidity in the supply path 120 and the discharge path 130, respectively, and transmit signals to the control unit 180. The control unit 180 stores the absolute humidity detected by the supply-side temperature / humidity sensor 171 as the absolute humidity of the intake air as the value a, and the absolute humidity detected by the discharge-side temperature / humidity sensor 172 as the absolute humidity of the exhaust gas as the value b. Remember.

  In step S103, the control unit 180 obtains the difference between the absolute humidity of the intake air and the absolute humidity of the exhaust gas from the difference between the value a and the value b, and sets the obtained absolute humidity difference as the value c.

  In step S104, the value c is stored.

  In step S105, the temperature and humidity are measured. The supply-side temperature / humidity sensor 171 and the discharge-side temperature / humidity sensor 172 detect the temperature and absolute humidity in the supply path 120 and the discharge path 130, respectively, and transmit signals to the control unit 180. The control unit 180 stores the absolute humidity detected by the supply-side temperature / humidity sensor 171 as the absolute humidity of the intake air as the value a, and the absolute humidity detected by the discharge-side temperature / humidity sensor 172 as the absolute humidity of the exhaust gas as the value b. Remember.

  In step S106, the control unit 180 obtains the difference between the absolute humidity of the intake air and the absolute humidity of the exhaust gas from the difference between the value a and the value b, and sets the obtained absolute humidity difference as the value c.

  In step S107, the control unit 180 determines whether or not the value c obtained in step S106 is smaller than the value c stored in step S104. If the value c obtained in step S106 is smaller than the value c stored in step S104, the process proceeds to step S108. If the value c obtained in step S106 is not smaller than the value c stored in step S104, the process proceeds to step S109.

  In step S108, the control unit 180 controls the blower 140 to decrease the rotational speed. In step S109, the control unit 108 controls the blower 140 to increase the rotational speed. If the value c obtained in step S106 is smaller than the value c stored in step S104, the difference between the absolute humidity detected by the supply side temperature / humidity sensor 171 and the absolute humidity detected by the discharge side temperature / humidity sensor 172. Is decreased with the passage of time, that is, the dryness is increased. In such a case, even if the air flow rate is increased, the dryness of the object to be dried cannot be increased. Therefore, in such a case, the power consumption can be reduced by reducing the blown air amount as compared with the case of keeping the blown air amount.

  Thereafter, the process returns to step S104. In this way, the capacity control of the blower 140 is performed based on the time change of the difference between the absolute humidity detected by the supply side temperature / humidity sensor 171 and the absolute humidity detected by the discharge side temperature / humidity sensor 172.

  In addition, when the difference between the absolute humidity detected by the supply-side temperature / humidity sensor 171 and the absolute humidity detected by the discharge-side temperature / humidity sensor 172 is larger than a predetermined value, the control unit 180 sends out by the blower 140. The amount of air to be generated is configured to be relatively small.

For example, the amount of air sent out by the blower 140 is 2 m ³ / min, and the difference between the absolute humidity detected by the supply side temperature / humidity sensor 171 and the absolute humidity detected by the discharge side temperature / humidity sensor 172 is 0.003 kg / kg. (DA), the case where the amount of air delivered by the blower 140 is relatively increased, that is, the case where the blower 140 is operated at a high speed will be described.

As shown in FIG. 6, when the amount of air sent out by the blower 140 is set to 3 m ³ / min, for example, the absolute humidity detected by the supply-side temperature / humidity sensor 171 and the discharge-side temperature / humidity sensor corresponding to the increase in the air volume. The difference in absolute humidity detected by 172 is reduced. If the dehumidification amount does not change even if the air volume is increased, the difference in absolute humidity is about 0.002 kg / kg (DA). Actually, when the difference in absolute humidity exceeds or falls below 0.002 kg / kg (DA), depending on drying factors such as the rate of moisture evaporation from clothing, contact factor, humidity, temperature, and accelerated drying conditions There is.

When the amount of air delivered by the blower 140 is 3 m ³ / min, the difference between the absolute humidity detected by the supply side temperature / humidity sensor 171 and the absolute humidity detected by the discharge side temperature / humidity sensor 172 is 0.002 kg / If it exceeds kg (DA), the amount of air delivered by the blower 140 is left at 3 m ³ / min.

On the other hand, when the amount of air sent out by the blower 140 is 3 m ³ / min, the difference between the absolute humidity detected by the supply side temperature / humidity sensor 171 and the absolute humidity detected by the discharge side temperature / humidity sensor 172 is 0. If it is below 002 kg / kg (DA), the amount of air sent out by the blower 140 is set to the original 2 m ³ / min.

Next, for example, the amount of air delivered by the blower 140 is 2 m ³ / min, and the difference between the absolute humidity detected by the supply side temperature / humidity sensor 171 and the absolute humidity detected by the discharge side temperature / humidity sensor 172 is 0. 003 kg / kg (DA), and a case where the amount of air sent out by the blower 140 is relatively small, that is, a case where the blower 140 is operated at a low speed will be described.

As shown in FIG. 6, when the amount of air sent out by the blower 140 is, for example, 1 m ³ / min, the absolute humidity detected by the supply-side temperature / humidity sensor 171 and the discharge-side temperature / humidity sensor are reduced by the amount of air flow. The difference in absolute humidity detected by 172 increases. If the dehumidification amount does not change even if the air volume is reduced, the difference in absolute humidity is about 0.006 kg / kg (DA). Actually, when the difference in absolute humidity exceeds or falls below 0.006 kg / kg (DA), depending on drying factors such as the rate of moisture evaporation from clothing, contact factor, humidity, temperature, and accelerated drying conditions There is.

When the amount of air sent out by the blower 140 is 1 m ³ / min, the difference between the absolute humidity detected by the supply side temperature / humidity sensor 171 and the absolute humidity detected by the discharge side temperature / humidity sensor 172 is 0.006 kg / When exceeding kg (DA), particularly when the detected difference in absolute humidity is 10 to 20% or more larger than 0.006 kg / kg (DA), the amount of air delivered by the blower 140 is 1 m ^3. Leave / min. That is, the amount of air sent out by the blower 140 is relatively reduced.

  Thus, when the air volume is switched, the difference between the absolute humidity detected by the supply-side temperature / humidity sensor 171 and the absolute humidity detected by the discharge-side temperature / humidity sensor 172 is 10 to 10% of the predicted value. If it is greater than 20%, the amount of air delivered by the blower 140 is made relatively small.

On the other hand, when the amount of air delivered by the blower 140 is 1 m ³ / min, the difference between the absolute humidity detected by the supply side temperature / humidity sensor 171 and the absolute humidity detected by the discharge side temperature / humidity sensor 172 is 0. If it falls below 006 kg / kg (DA), the amount of air delivered by the blower 140 is set to the original 2 m ³ / min.

  In the case where the air in the supply path 120 is sufficiently dry compared to clothing, moisture can be removed from the clothing even if the amount of air delivered by the blower 140 is relatively small. By doing in this way, the electric power consumed can be reduced.

In this embodiment, the amount of air sent out by the blower 140 is adjusted to three levels of 1 m ³ / min, 2 m ³ / min, and 3 m ³ / min. The amount of air delivered by the blower 140 is preferably adjusted in several stages.

  As described above, the clothes washing and drying machine 1 includes the rotating drum 110, the supply path 120, the discharge path 130, the blower 140, the heater 150, the supply side temperature / humidity sensor 171, and the discharge side temperature / humidity sensor 172. Is provided. The rotating drum 110 accommodates clothing. The supply path 120 is for supplying air into the rotary drum 110. The discharge path 130 is for discharging air from the inside of the rotating drum 110. The blower 140 is for sending the air in the supply path 120. The heater 150 is for heating the air in the supply path 120. The supply side temperature / humidity sensor 171 is for detecting the absolute humidity in the supply path 120. The discharge side temperature / humidity sensor 172 is for detecting the absolute humidity in the discharge path 130.

  In the clothes washer / dryer 1 configured as described above, the difference between the absolute humidity detected by the supply-side temperature / humidity sensor 171 and the absolute humidity detected by the discharge-side temperature / humidity sensor 172 is greater than a predetermined value. The fan 140 is driven and the heater 150 is stopped. When the difference between the absolute humidity detected by the supply-side temperature / humidity sensor 171 and the absolute humidity detected by the discharge-side temperature / humidity sensor 172 is equal to or less than a predetermined value, the blower 140 and the heater 150 are driven. It is configured.

  When the difference between the absolute humidity detected by the supply-side temperature / humidity sensor 171 and the absolute humidity detected by the discharge-side temperature / humidity sensor 172 is larger than a predetermined value, the blower 140 is driven and the heater 150 stops driving. Is done. In such a case, the air in the supply path 120 is sufficiently dry as compared with the clothing, so that the air in the supply path 120 contacts the clothing as it is to sufficiently remove moisture from the clothing. be able to. Even if the temperature of the air supplied to the clothes is low, if the difference between the absolute humidity of the air in the supply path 120 and the absolute humidity of the air in the discharge path 130 is larger than a predetermined value, the inside of the supply path 120 Even if the air is supplied to the clothing as it is, moisture can be removed from the clothing.

  On the other hand, when the difference between the absolute humidity detected by the supply side temperature / humidity sensor 171 and the absolute humidity detected by the discharge side temperature / humidity sensor 172 is equal to or less than a predetermined value, the blower 140 and the heater 150 are driven. The In such a case, the air in the supply path 120 cannot be said to be sufficiently dry as compared with clothing. Therefore, the moisture in the clothing can be further removed by heating the air in the supply path 120 and then supplying the clothing to the clothing.

  In this way, based on the difference between the absolute humidity of the air in the supply path 120 and the absolute humidity of the air in the discharge path 130, the air in the supply path 120 is supplied to the clothing as it is without being heated, or the supply path By switching whether the air in 120 is heated and then supplied to the clothing, optimal drying can be performed according to the dryness of the clothing, and energy saving can be realized. For example, when it is not necessary to heat the air in the supply path 120, the air consumed in the heater 150 can be reduced by supplying the air in the supply path 120 to clothing as it is. If the air in the supply channel 120 cannot be sufficiently dried even if it is supplied to the clothing as it is, the time required for the entire drying process can be obtained by supplying the air heated by the heater 150 to the clothing. As a result, energy saving can be realized.

  By doing in this way, the clothes washing dryer 1 which can dry clothes efficiently according to the drying degree of clothes can be provided.

  In addition, when the difference between the absolute humidity detected by the supply-side temperature / humidity sensor 171 and the absolute humidity detected by the discharge-side temperature / humidity sensor 172 is greater than a predetermined value, the clothes washing / drying machine 1 It is comprised so that the quantity of the air sent out may be made relatively small.

  In the case where the air in the supply path 120 is sufficiently dry compared to clothing, moisture can be removed from the clothing even if the amount of air delivered by the blower 140 is relatively small. By doing in this way, the electric power consumed can be reduced.

  In addition, the clothes washer / dryer 1 is sent out by the blower 140 based on the time change of the difference between the absolute humidity detected by the supply side temperature / humidity sensor 171 and the absolute humidity detected by the discharge side temperature / humidity sensor 172. It is configured to adjust the amount of air.

  In the latter half of the drying process, the amount of time change of the difference between the absolute humidity detected by the supply side temperature / humidity sensor 171 and the absolute humidity detected by the discharge side temperature / humidity sensor 172 becomes small. In such a case, the dryness of the clothes cannot be increased even if the air flow rate is increased. Therefore, in such a case, the power consumption can be reduced by reducing the blown air amount as compared with the case of keeping the blown air amount.

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

  DESCRIPTION OF SYMBOLS 1: Clothes washer-dryer, 110: Rotating drum, 120: Supply path, 130: Discharge path, 140: Blower, 150: Heater, 171: Supply side temperature / humidity sensor, 172: Discharge side temperature / humidity sensor

Claims (3)

A container for storing an object to be dried;
A supply path for supplying air into the container;
A discharge path for discharging air from the inside of the container;
A blower for sending out air in the supply path;
A heating unit for heating the air in the supply path;
A first detector for detecting absolute humidity in the supply path;
A second detector for detecting absolute humidity in the discharge path,
When the difference between the absolute humidity detected by the first detection unit and the absolute humidity detected by the second detection unit is greater than a predetermined value, the blowing unit is driven and the heating unit is stopped. When the difference between the absolute humidity detected by the first detection unit and the absolute humidity detected by the second detection unit is equal to or less than a predetermined value, the air blowing unit and the heating unit are driven. A dryer that is configured to.   When the difference between the absolute humidity detected by the first detection unit and the absolute humidity detected by the second detection unit is larger than a predetermined value, the amount of air sent out by the blower unit is relative The dryer according to claim 1, wherein the dryer is configured to be small. Based on the change over time of the difference between the absolute humidity detected by the first detector and the absolute humidity detected by the second detector, the amount of air sent out by the air blower is adjusted. The dryer according to claim 1 or 2.

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