JP2006312075A - Washer-drier - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To shorten time for washing operation, and improve operation efficiency in a washer-drier. <P>SOLUTION: This washer-drier 100 is provided with an inner drum 5 for containing the laundry for executing washing operation to the laundry, and drying operation after completion of the washing operation in the inner drum 5. It is provided with a supply water passage 15 for supplying water into the inner drum 5, a draining passage 12 for draining water from the inner drum 5, a cooling medium circuit 20 comprising a compressor 21, a gas cooler 22, an expansion valve 23, an evaporator 24, etc., serially and circularly piping-connected to each other to use carbon dioxide as cooling medium, and a blower 75 to discharge air after heat exchange with the gas cooler 22 into the inner drum 5, and heat-exchange air from the inner drum 5 with the evaporator. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a washing / drying machine including a storage room for storing a laundry, and washing and drying the laundry in the storage room.

  2. Description of the Related Art In recent years, a washing / drying machine that automatically performs from washing to drying in a storage room that stores laundry is provided. Such a washing and drying machine generally performs a washing operation having a plurality of different processes such as washing, rinsing and dehydration, and a drying operation for drying the laundry to be dehydrated in the process.

  Here, the drying operation is conventionally performed by using an electric heater or a gas combustion heater as a heat source, heating the outside air by the electric heater or the combustion heater to high-temperature air, and then blowing it into a storage chamber in which the laundry is stored. Then, the laundry in the storage room is dried. And the hot air in the storage room which dried the to-be-washed object was discharged | emitted outside.

  However, when a drying operation is performed using an electric heater, a gas combustion heater, or the like, the high-temperature air sent into the storage room uses outside air that has low temperature outside the storage room and includes humidity. It takes a long time for things to dry. Therefore, there is a problem that the energy consumption for drying the object to be dried increases and the energy cost such as electricity bill and gas bill rises.

Therefore, the laundry dryer includes a compressor, a heating coil, an expansion valve, and a cooling coil, and uses a heat pump that can circulate the heat exchange medium, and dries the laundry with high-temperature air heated by the heating coil. In addition, there has been developed a technique in which moisture evaporated from the laundry is condensed in a cooling coil and discarded (see Patent Document 1).
JP 11-99299 A

  By using such a heat pump, it can be expected that the time required for drying the laundry will be shortened and energy efficiency will be improved. However, in the washing and drying machine that performs both the washing operation and the drying operation in the storage room Therefore, there was an urgent need for improvement in relative efficiency including washing operation.

  The present invention is a laundry dryer that includes a storage room for storing a laundry, and performs a washing operation of the laundry and a drying operation after the completion of the washing operation in the storage chamber. Water supply means for supplying water into the room, drainage means for discharging the water in the storage room, a compressor, a gas cooler, a decompression device, an evaporator and the like are sequentially connected in an annular manner, and carbon dioxide is used as a refrigerant. A refrigerant circuit and air blowing means for exchanging heat with the gas cooler in the drying operation are discharged into the accommodation chamber, and air blowing means for exchanging heat with the evaporator through the accommodation chamber is provided. Water supplied into the room is heated by the high-pressure side refrigerant in the refrigerant circuit.

  According to a second aspect of the present invention, there is provided a drainage storage part for temporarily storing the water discharged from the storage chamber by the drainage means as described above, and in the washing operation, the low-pressure side refrigerant in the refrigerant circuit is evaporated and stored in the drainage storage part. It absorbs heat from the collected water.

  According to a third aspect of the present invention, in the washing operation according to the first aspect of the present invention, the low-pressure side refrigerant in the refrigerant circuit is evaporated to absorb heat from the outside air.

  The invention according to claim 4 is the invention according to claim 2 or claim 3, wherein the auxiliary evaporator for absorbing heat from the water or the outside air in the drainage reservoir and the refrigerant having passed through the pressure reducing device are passed to the evaporator or the auxiliary evaporator. A flow path control means for controlling water, and a control means for controlling the compressor, the blower means, and the flow path control means. The control means operates the compressor when water is supplied by the water supply means, and the auxiliary vaporization is performed by the flow path control means. The refrigerant flows through the vessel.

  The laundry dryer of the present invention includes a storage room for storing the laundry, and performs a washing operation of the laundry and a drying operation after the washing operation in the storage chamber. A water supply means for supplying water into the storage chamber, a drainage means for discharging the water in the storage chamber, and a compressor, a gas cooler, a decompression device, an evaporator, and the like, which are sequentially connected in an annular manner, and carbon dioxide as a refrigerant. In the drying operation, there is provided a refrigerant circuit to be used as an air discharge unit for discharging air exchanged with the gas cooler into the accommodation chamber, and air blowing means for exchanging heat through the accommodation chamber with the evaporator. Therefore, it is possible to reduce the electric energy and operation time required for drying the laundry, and realize an efficient drying operation.

  In particular, since the water supplied to the storage chamber by the water supply means in the washing operation is heated by the high-pressure side refrigerant of the refrigerant circuit, the temperature of the water supplied to the storage chamber in the washing operation is raised to increase the water solubility of the detergent. Can be increased. As a result, the washing performance is improved, so that the time required for the washing operation can be shortened, and the driving efficiency can be significantly improved as a whole.

  In the invention of claim 2, in addition to the above, a drainage storage part for temporarily storing the water discharged from the storage chamber by the drainage means is provided. In the washing operation, the low-pressure side refrigerant of the refrigerant circuit is evaporated to the drainage storage part. Since heat is absorbed from the stored water, it becomes possible to efficiently heat the water that is discharged from the storage chamber and pumped up from the water once stored in the drainage storage section and supplied to the storage chamber. . Moreover, since the heat absorption structure can be concentrated in the drainage reservoir, the washing / drying machine can be downsized.

  In the invention of claim 3, in addition to the invention of claim 1, in the washing operation, the low-pressure side refrigerant of the refrigerant circuit is evaporated to absorb heat from the outside air, so that heat is pumped from the outside air and supplied to the storage chamber. It is possible to efficiently heat the water.

  According to the invention of claim 4, in addition to the invention of claim 2 or claim 3, in addition to the auxiliary evaporator for absorbing heat from the water or the outside air in the drainage reservoir, the refrigerant having passed through the pressure reducing device is passed through the evaporator or the auxiliary evaporator And a control means for controlling the compressor, the air blowing means and the flow path control means. The control means operates the compressor when water is supplied by the water supply means, and is controlled by the flow path control means. Since the refrigerant is allowed to flow through the auxiliary evaporator, the operation time of the compressor during the washing operation can be minimized and further energy efficiency can be improved.

  In order to solve the technical problem, the present invention provides a washing / drying machine capable of reducing the time required for the washing operation and improving the operation efficiency. Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is an internal configuration diagram of a washing / drying machine 100 according to an embodiment of the present invention as viewed from the side. The washing / drying machine 100 is used for washing and drying clothes such as clothes, and an opening / closing door 3 for delivering the clothes to be washed at the center of the upper surface of the main body 1 forming the outer shell. And an operation panel (not shown) provided with various operation switches and a display unit is provided on the upper surface of the main body 1 on the side of the door 3.

  A cylindrical resin-made outer tub drum 2 capable of storing water is provided in the main body 1, and the outer tub drum 2 is disposed with a cylindrical shaft in the left-right direction. A cylindrical stainless steel inner tub drum 5 serving as a washing tub and a dewatering tub is provided inside the outer tub drum 2. The inside of the inner tub drum 5 is a storage chamber 10 for storing the laundry, and this is also arranged with a cylindrical shaft in the left-right direction, and this shaft is on the side wall (the back side in FIG. 1) of the main body 1. It is connected to the shaft 8 of the mounted drive motor M, and is held rotatably around the shaft 8 in the outer tub drum 2.

  A watertight opening / closing lid (not shown) is provided on the upper part of the outer tub drum 2 in correspondence with the opening / closing door 3 to deliver laundry. In addition, a large number of through-holes 7 through which air and water can circulate are formed in the entire peripheral wall of the inner tank drum 5. In addition, the stop position of the inner layer drum 5 is defined, and an opening / closing cover (not shown) for delivering the laundry is provided at a position (upper surface) corresponding to the opening / closing cover of the outer tub drum 2 at the time of the stop. is doing.

  The drive motor M described above is a motor for rotating the inner tub drum 5 around the horizontal axis 8 in the washing operation and the drying operation after the washing operation is completed. This drive motor M is attached to one end of the shaft 8 and is controlled by the control device 110 as control means described later so that the inner tub drum 5 is rotated at a lower speed during the drying operation than during the washing operation. Is done.

  An inner hollow portion 9 is formed in the other end of the shaft 8, and an air circulation path 72 (described later) communicates with the inside of the inner tank drum 5 through the hollow portion 9.

  On the other hand, a water supply passage 15 as water supply means for supplying water into the inner tank drum 5 is provided at the upper part of the main body 1, and one end of the water supply passage 15 is a water supply valve 35 which also constitutes the water supply means. It is connected to a water supply source such as tap water. The water supply valve 35 is controlled to be opened and closed by the control device 110. Further, the other end of the water supply passage 15 is connected to the inside of the outer tub drum 2 and communicated with the inside, and provided in the outer tub drum 2 when the water supply valve 35 is opened by the control device 110. Water (tap water) is supplied to the storage chamber 10 in the inner tank drum 5 from a water supply source.

  In addition, the water supply passage 15 is provided with a heat exchanger 50 (described later) for heating the water supplied to the storage chamber 10 as described above.

  Further, a drainage passage 12 as a drainage means for discharging the water in the storage chamber 10 in the inner tank drum 5 is provided at the lower part of the main body 1, and one end of the drainage passage 12 is connected to the control device 110. Is communicated with the bottom of the outer drum 2 through a drain valve 13 whose opening and closing is controlled by (which also constitutes drainage means). Further, the other end of the drainage passage 12 is led out of the washing / drying machine 100 and reaches a drainage groove or the like.

  Here, the drain passage 12 is configured with a U trap 14 for sealing the inside of the drain passage 12 with water discharged from the storage chamber 10, and in front of the U trap 14 (on the drain valve 13 side). A drainage reservoir 16 having a wide passage is formed. When the drain valve 13 is opened by the control device 110, the water (drainage) from the storage chamber 10 is once stored in the drain reservoir 16 and then overflows and flows out from the U trap 14. When the drain valve 13 is closed, the drain passage 12 is sealed with the U trap 14 in a state where water is stored in the drain reservoir 16. Further, an auxiliary evaporator 25 (to be described later) is provided in the drainage reservoir 16 in a heat exchange manner.

  On the other hand, the washing / drying machine 100 includes a machine room 70 extending from the lower side and / or rear side of the outer tub drum 2 in the main body 1 to the side, and the air circulation described above is provided in the machine room 70. A path 72 is configured.

  An inlet 73 is formed at one end of the air circulation path 72, and the evaporator 24 of the refrigerant circuit 20 described later is installed in the air circulation path 72 near the inlet 73 of the air circulation path 72. The inlet 73 of the air circulation path 72 communicates with the rear portion in the outer tub drum 2. An outlet 74 is formed at the other end of the air circulation path 72, and a gas cooler 22 of the refrigerant circuit 20 described later is installed in the air circulation path 72 near the outlet 74. An outlet 74 of the air circulation path 72 is opened at a hollow portion 9 formed at the other end of the shaft 8.

  In addition, a blower 75 as a blowing means is provided in the air circulation path 72, and air is blown from the outlet 74 of the air circulation path 72 through the hollow portion 9 of the shaft 8 into the accommodation chamber 10 in the inner tank drum 5. To do. That is, the washing dryer 100 circulates the air in the inner drum 5 in the air circulation path 72 by the blower 75 during the drying operation, so that the heat with the gas cooler 22 provided on the outlet 74 side of the air circulation path 72 is increased. After the air is heated by replacement, the air is discharged into the storage chamber 10 in the inner tank drum 5. The air after circulating in the storage chamber 10 and drying the laundry is sucked into the air circulation path 72 from the inlet 73 and exchanges heat with the evaporator 24 provided on the inlet 73 side. After being cooled and dehumidified, the air is again sucked into the blower 75, sent to the gas cooler 22, and discharged into the storage chamber 10.

Next, in FIG. 1, reference numeral 20 denotes the refrigerant circuit described above, and the refrigerant circuit 20 is configured by sequentially connecting a compressor 21, a gas cooler 22, an expansion valve 23 as a pressure reducing device, an evaporator 24, and the like in an annular manner. . In the refrigerant circuit 20, carbon dioxide (CO ₂ ) is used as a refrigerant.
Is enclosed in a predetermined amount. Here, the compressor 21 used in the present embodiment is an internal intermediate pressure multistage compression rotary compressor, and includes an electric element in a hermetic container (not shown) and a first rotary compression element (1) driven by the electric element. Stage) and a second rotary compression element (second stage).

  Then, the low-pressure refrigerant is introduced from the refrigerant introduction pipe 30 to the first rotary compression element of the compressor 21, and the high-temperature and high-pressure refrigerant compressed by the second rotary compression element is discharged from the refrigerant discharge pipe 32 to the outside of the compressor 21. It is configured.

  The refrigerant discharge pipe 32 of the compressor 21 is connected to the inlet of an air heating gas cooler 22 provided on the outlet 74 side of the air circulation path 72. The pipe exiting from the gas cooler 22 reaches the expansion valve 23 after passing through the heat exchanger 50 described above. The outlet of the expansion valve 23 reaches the inlet of the evaporator 24 provided on the inlet 73 side via the three-way valve 42 constituting the flow path control means, and the outlet of the evaporator 24 also constitutes the flow path control means. The refrigerant inlet pipe 30 is connected via another three-way valve 44 that reaches the compressor 21. The operation of the compressor 21 and the expansion valve 23 and the three-way valves 42 and 44 are controlled by the control device 110.

  The heat exchanger 50 is provided for exchanging heat between the high-pressure side refrigerant (high-temperature high-pressure refrigerant) of the refrigerant circuit 20 and the water supplied from the water supply source through the water supply passage 15 into the outer tub drum 2. The water passing through the water supply passage 15 exchanges heat with the heat exchanger 50 and is heated by the high-pressure side refrigerant.

  On the other hand, a bypass circuit 40 that bypasses the evaporator 24 is formed in the refrigerant circuit 20, and the auxiliary evaporator 25 installed in the drainage reservoir 16 of the drainage passage 12 is connected to the bypass circuit 40 as described above. . Both ends of the bypass circuit 40 are connected to the three-way valves 42 and 44. Then, the control device 110 operates the compressor 21 during water supply through the water supply passage 15 and causes the refrigerant to flow into the auxiliary evaporator 25 through the three-way valves 42 and 44.

  The control device 110 described above is a control unit that controls the washing / drying machine 100, and operates the drive motor M, opens / closes the water supply valve 35 of the water supply passage 15, opens / closes the drainage valve 13 of the drainage passage 12, and The operation, the throttle adjustment of the expansion valve 23, the air volume of the blower 75, and the switching of the three-way valves 42 and 44 are controlled. Furthermore, the control device 110 controls the temperature of the air that has passed through the gas cooler 22 so that the laundry accommodated in the inner tub drum 5 is not discolored and damaged.

  Next, the operation of the washing / drying machine 100 having the above configuration will be described. When a predetermined amount of detergent according to the amount of laundry and the amount of the laundry to be washed is put in the storage chamber 10 in the inner tub drum 5, and the power switch and the start switch among the operation switches described above are operated, the control is performed. The device 110 starts the washing operation. In this washing operation, the control device 110 switches the three-way valves 42 and 44 so that the refrigerant flows into the auxiliary evaporator 25 of the bypass circuit 40. Further, the controller 110 opens the water supply valve 35 of the water supply passage 15 to open the water supply passage 15. Thereby, water is supplied from the water supply source into the storage chamber 10 of the inner layer drum 5 in the outer tub drum 2. At this time, the drain valve 13 of the drain passage 12 is closed.

The control device 110 activates the electric element of the compressor 10 simultaneously with the opening of the water supply valve 35. As a result, the refrigerant (CO ₂ ) is sucked into the first rotary compression element of the compressor 21 and compressed. The refrigerant compressed to the intermediate pressure by the first rotary compression element is discharged into the closed container, and the refrigerant discharged into the closed container is sucked into the second rotary compression element and the second stage compression is performed. As a result, the refrigerant gas becomes a high-temperature and high-pressure refrigerant gas and is discharged from the refrigerant discharge pipe 32 to the outside.

  The refrigerant gas discharged from the refrigerant discharge pipe 32 flows into the heat exchanger 50 through the gas cooler 22. During this washing operation, the blower 75 is not operated. Therefore, in the gas cooler, the refrigerant flows into the heat exchanger 50 without radiating heat. Here, the refrigerant on the high-pressure side of the refrigerant circuit 20 compressed by the compressor 21 and extending from the gas cooler 22 to the heat exchanger 50 is not condensed and is operated in a supercritical state. The refrigerant temperature when flowing into the heat exchanger 50 has risen to about + 130 ° C., and the high-temperature and high-pressure refrigerant gas exchanges heat with water passing through the water supply passage 15 to dissipate heat. Exit exchanger 50. On the other hand, water deprived of heat from the high-pressure side refrigerant in the heat exchanger 50 becomes warm water and is supplied into the storage chamber 10 in which the laundry is stored via the outer tub drum 2.

  In this way, by heating the water passing through the water supply passage 15 in the heat exchanger 50, the hot water can be supplied from the outer tank drum 2 to the accommodation chamber 10 in the inner tank drum 5 through the through hole 7. become able to. That is, the water solubility of the detergent can be increased by increasing the temperature of the water supplied to the storage chamber 10 during the washing operation.

  Accordingly, it is possible to prevent the detergent from remaining undissolved and the like, and to effectively remove dirt from the laundry, thereby improving the washing performance and shortening the washing time.

  The operation of the compressor 21 is controlled by the control device 110 so that the water supplied from the water supply passage 15 in the heat exchanger 50 is heated to, for example, about + 30 ° C. to + 40 ° C.

  On the other hand, the refrigerant exiting the heat exchanger 50 reaches the expansion valve 23. Here, the refrigerant is depressurized and liquefied, and enters the auxiliary evaporator 25 installed in the drainage reservoir 16 of the drainage passage 12 via the three-way valve 42. The refrigerant flowing into the auxiliary evaporator 25 absorbs heat from the water (drainage) stored in the drainage reservoir 16 and evaporates. That is, the refrigerant circuit 20 pumps heat from the water stored in the drainage storage section 16 of the drainage passage 12 by the refrigerant in the auxiliary evaporator 25, heats the water that is transported to the heat exchanger 50 and supplied to the storage chamber 10. Functions as a heat pump.

  As a result, the exhaust heat can be recovered from the water in the drainage reservoir 16 discharged from the storage chamber 10, and the energy efficiency can be improved. In addition, the water can be efficiently heated by the heat exchanger 50.

  In order to prevent the water stored in the drainage reservoir 16 in front of the U trap 14 from being cooled by the auxiliary evaporator 25, the control device 110 is, for example, an expansion valve so that the temperature of the water becomes + 3 ° C. to + 5 ° C. The valve opening of 23 and the operation of the compressor 21 are controlled.

  Thereafter, the refrigerant is repeatedly cycled through the three-way valve 44 and sucked from the refrigerant introduction pipe 30 into the first rotary compression element of the compressor 21.

  When a predetermined amount of warm water accumulates in the storage chamber 10 in the inner tank drum 5, the control device 110 closes the water supply valve 35 and closes the water supply passage 15. Thereby, the supply of water from the water supply source is stopped. Further, the control device 110 stops the operation of the compressor 21 in synchronization with the stop of the water supply.

  Next, the drive motor M formed on the side surface of the main body 1 is energized and activated by the control device 110 to rotate the shaft 8, whereby the inner tank drum 5 attached to the shaft 8 rotates in the outer tank drum 2. The washing process of the washing operation is started.

  When a predetermined time has elapsed from the start of the washing process, the drive motor M is stopped by the control device 110, the drain valve 13 of the drain passage 12 is opened, and the inside of the storage chamber 10 of the inner tub drum 2 (that is, the outer tub drum 5). The water (washing water) is discharged through the U trap 14 as described above.

  When the water in the storage chamber 10 of the inner tub drum 5 is discharged, the control device 110 operates the drive motor M again to dehydrate the laundry. After performing this dehydration for a predetermined time, the control device 110 closes the drain valve 13 of the drain passage 12. Thus, the hot water supplied to the inner tank drum 5 is stored in the drainage reservoir 16 of the drainage passage 12.

  Next, the control device 110 proceeds to the rinsing process, and opens the water supply valve 35 of the water supply passage 15 to open the water supply passage 15. Thereby, water is again supplied from the water supply source to the storage chamber 10 in the inner tank drum 5. The control device 110 restarts the compressor 10 in synchronization with the opening of the water supply valve 35, and heats the water supplied by the heat exchanger 50 in the same manner as described above.

  Thereby, also in this rinse process, the hot water heated with the heat exchanger 50 is supplied in the storage chamber 10 similarly to a washing process. Similarly to the washing process, the heat pumped up from the drainage storage part 16 of the drainage passage 12 is used in the heat exchanger 50.

  On the other hand, when a predetermined amount of water is supplied to the storage chamber 10 in the inner tank drum 5, the control device 110 closes the water supply valve 35 and closes the water supply passage 15. Thereby, the supply of water from the water supply source is stopped. Further, the control device 110 stops the operation of the compressor 21.

  Then, after rinsing by repeating the rotation operation of the drive motor M for a predetermined time, the control device 110 stops the drive motor M and opens the drain valve 13 of the drain passage 12 to drain the rinse water in the storage chamber 10. Drain into the passage 12. When the rinsing water in the storage chamber 10 is discharged, the control device 110 operates the drive motor M again, rotates the inner tub drum 5 as described above, and shifts to a dehydration process in which the laundry is dehydrated.

  Thus, since the warm water heated by the heat exchanger 50 is supplied to the inner tub drum 5 even in the rinsing process, the detergent adhering to the laundry can be dissolved and effectively dropped. As a result, the rinsing ability is improved, and the rinsing time can be shortened.

  Further, since the compressor 21 is operated only in the water supply, the operation time of the compressor 21 can be suppressed to the necessary minimum, and the energy efficiency can be further improved as a whole by combining the shortening of the washing and rinsing time. become able to.

  Furthermore, since the heated hot water is supplied to the inner tank drum 5, the temperature of the storage chamber 10 is increased before the drying operation. Therefore, the gas cooler 22 is heated to a predetermined high temperature after starting the compressor 21 during the drying operation. It becomes possible to assist the rise in temperature until the temperature rises. As a result, the drying time can be shortened and the operation efficiency of the washing dryer 100 can be improved.

  Then, after performing this dehydration process for a predetermined time, the control device 110 closes the drain valve 13. Further, the control device 110 switches the three-way valves 42 and 44 so that the refrigerant in the refrigerant circuit 20 flows to the evaporator 24, starts the compressor 21, and starts the operation of the blower 75. Then, the inner tub drum 5 is rotated by the drive motor M to shift to a drying operation. In this drying operation, the high-temperature and high-pressure refrigerant gas discharged from the compressor 21 is radiated by the gas cooler 22 and the heat exchanger 50, and then depressurized by the expansion valve 23, and then flows into the evaporator 24 where it absorbs heat from the surroundings. Then, it evaporates and circulates by being sucked into the first rotary compression element of the compressor 21 from the refrigerant introduction pipe 32.

  In addition, when the blower 75 is operated, the air heated by the heat radiation of the high-temperature and high-pressure refrigerant in the gas cooler 22 is discharged into the hollow portion 9 from the outlet 74 of the air circulation path 72, and the housing chamber 10 of the inner drum 5. It is discharged inside.

  The heated air (+ 85 ° C. to + 95 ° C. at this time) discharged into the storage chamber 10 warms the laundry stored in the inner tub drum 5 (storage chamber 10), evaporates the moisture, and dries the laundry. Let Air containing moisture by drying the laundry (air temperature is about + 60 ° C.) goes out of the inner drum 5 from the through hole 7 through the storage chamber 10 and is sucked into the air circulation path 72 from the inlet 73. , And passes through an evaporator 24 provided there. Since the temperature of the evaporator 24 is lowered to about + 3 ° C. due to the evaporation of the refrigerant, moisture in the air condenses on the surface of the evaporator 24 in the process of passing through the evaporator 24 and falls as water droplets. . The dropped water droplets are discharged from the drainage passage 12 to an external drainage groove or the like via a drain pipe (not shown).

  Further, the air that has been dried by removing moisture by the evaporator 24 (the temperature drops to + 20 ° C. to + 30 ° C.) is sucked into the blower 75 and blown to the outlet 74 side of the air circulation path 72. Since the gas cooler 22 is provided on the outlet 74 side of the air circulation path 72 as described above, the dried air is heated again by the gas cooler 22, and then passes through the hollow portion 9 of the shaft 8 in the inner tank drum 5. It is discharged into the storage chamber 10 and repeats circulation in which moisture is removed from the laundry in the inner tub drum 5 and dried.

  By performing such a drying operation for a predetermined time in the control device 110, the laundry in the storage chamber 10 in the inner tub drum 5 is completely dried.

  In the above embodiment, the auxiliary evaporator 25 is installed in the drainage reservoir 16 in front of the U trap 14 of the drainage passage 12 and absorbs heat from the drained water (drainage) to evaporate. Alternatively, the auxiliary evaporator may be provided at a position where it can exchange heat with the outside air (auxiliary evaporator 25A shown by a broken line in FIG. 1), and absorbs heat from the outside air to evaporate. Further, the auxiliary evaporator 25A is installed together with the auxiliary evaporator 25 of the drainage reservoir 16 in front of the U trap 14 of the drainage passage 12. The auxiliary evaporator 25 absorbs heat from the waste water and the auxiliary evaporator 25A absorbs heat from the outside air. It is good. In this case, energy efficiency can be further improved, and drainage is stored in the drainage reservoir 16 in front of the U trap 14 by the first operation after installing the washing / drying machine 100. Even when there is not, heat can be pumped up from the outside air by the auxiliary evaporator 25A.

  In this embodiment, the control device 110 turns the compressor 21 on and off in synchronization with the opening and closing of the water supply valve 35. However, the present invention is not limited to this, and the compressor 21 may be started before the water supply valve 35 is opened. . Thereby, it becomes possible to raise the temperature of the heat exchanger 50 from the start of water supply. Conversely, the compressor 21 may be stopped before the water supply valve 35 is closed, and thereafter the water may be heated by the residual heat of the heat exchanger 50. As a result, the power consumption can be further reduced.

  Further, the compressor 21 used in the present embodiment is an internal intermediate pressure type multi-stage (two-stage) compression type rotary compressor having the first and second rotary compression elements. It is not limited to.

It is an internal block diagram of the washing-drying machine of the Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body 2 Outer tank drum 5 Inner tank drum 7 Through-hole 8 Shaft 9 Hollow part 10 Storage chamber 12 Drainage passage 13 Drainage valve 14 U trap 15 Water supply passage 16 Drainage storage part 20 Refrigerant circuit 21 Compressor 22 Gas cooler 23 Expansion valve 24 Evaporator 25, 25A Auxiliary evaporator 30 Refrigerant introduction pipe 32 Refrigerant discharge pipe 35 Water supply valve 40 Bypass circuit 42, 44 Three-way valve 50 Heat exchanger 70 Machine room 72 Air circulation path 73 Inlet 74 Outlet 75 Blower 100 Washer / dryer 110 Controller

Claims (7)

A laundry dryer having a storage room for storing the laundry, and performing a washing operation of the laundry and a drying operation after the washing operation in the storage room;
In the washing operation, water supply means for supplying water into the storage chamber, and drainage means for discharging water in the storage chamber;
A refrigerant circuit in which a compressor, a gas cooler, a pressure reducing device, an evaporator, and the like are sequentially connected in a pipe;
In the drying operation, air discharged from the gas cooler is discharged into the housing chamber, and air blowing means for exchanging heat between the air passing through the housing chamber and the evaporator is provided.
A washing and drying machine characterized in that water supplied by the water supply means and heated by the high-pressure side refrigerant of the refrigerant circuit is supplied directly into the storage chamber, and washing is performed with the heated water. A laundry dryer having a storage room for storing the laundry, and performing a washing operation of the laundry and a drying operation after the washing operation in the storage room;
In the washing operation, water supply means for supplying water into the storage chamber, and drainage means for discharging water in the storage chamber;
A refrigerant circuit in which a compressor, a gas cooler, a heat exchanger for heating the feed water, a decompressor, an evaporator, and the like are sequentially connected in a pipe;
In the drying operation, air discharged from the gas cooler is discharged into the housing chamber, and air blowing means for exchanging heat between the air passing through the housing chamber and the evaporator is provided.
In the washing operation, the water supplied to the storage chamber by the water supply means is heated only by the refrigerant flowing through the water supply heating heat exchanger of the refrigerant circuit.   2. The washing and drying machine according to claim 1, wherein, in addition to the washing operation, also in the rinsing operation, water supplied into the storage chamber by the water supply means is heated by a high-pressure side refrigerant of the refrigerant circuit. .   In addition to the washing operation, also in the rinsing operation, the water supplied into the accommodation chamber by the water supply means is heated only by the refrigerant flowing through the water supply heating heat exchanger of the refrigerant circuit. Item 3. A washing and drying machine according to Item 2.   The washing / drying machine according to any one of claims 1 to 4, wherein the compressor is operated when water is supplied into the storage chamber by the water supply means. A drainage reservoir for temporarily storing water discharged from the storage chamber by the drainage means;
The washing / drying machine according to any one of claims 1 to 5, wherein, in the washing operation, the low-pressure side refrigerant in the refrigerant circuit is evaporated to absorb heat from water stored in the drainage reservoir.   6. The washing and drying machine according to claim 1, wherein in the washing operation, the low-pressure side refrigerant in the refrigerant circuit is evaporated to absorb heat from outside air.

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