JP2005253589A - Dryer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dryer having reduced vibration caused by the rotation of a rotating drum. <P>SOLUTION: A washer/dryer W has a drum body D composed of an outer tub drum 2 and an inner tub drum 5 set inside the outer tub drum 2 as a rotating drum, and performs drying operation of an object to be dried in a housing chamber 10 composed in the inner tub drum 5. The washer/dryer includes a compressor 81, a gas cooler 82 as a radiator, a refrigerant circuit 95 composed by connecting an expansion valve (decompression device) 84 and an evaporator 85 sequentially with piping, and an air circulation path 72 for blowing air subjected to heat exchange with the gas cooler 82 by a blower fan 83 as a blowing means and exchanging heat between the air through the housing chamber 10 and the evaporator 85. The refrigerant circuit 95 and the blower fan 83 are integrally composed in a heat insulating box body 90 as a cassette. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a dryer for performing a drying operation of an object to be dried in a storage chamber configured in a rotating drum of a drum body.

  Conventionally, this kind of dryer is a rotating drum in which a main body is formed with a drying unit including a heat source of an electric heater and a gas combustion heater, a fan and a driving motor thereof, and a chamber for accommodating an object to be dried It is composed of. Then, the air blown by the fan (air blowing means) is heated by the electric heater or the gas combustion heater and then blown to the housing chamber in the rotating drum to dry the object to be dried in the housing chamber.

  In such a dryer, the drying unit is independently installed above the rotating drum, and the drying unit and the rotating drum are connected by a flexible duct having flexibility, and transmitted from the rotating drum to the drying unit. It was supposed to reduce vibration (for example, see Patent Document 1).

In addition, in a washing and drying machine that executes a washing operation and a drying operation after the completion of the washing operation, a tank for storing rinse water used in the rinsing process of the washing operation is installed at the bottom of the main body, Some have been developed to increase the stability by lowering the center of gravity (see, for example, Patent Document 2).
JP-A-5-123486 JP-A-2-36893

  On the other hand, in a dryer using such an electric heater or a gas combustion heater, the high-temperature air sent into the storage chamber uses outside air that has low temperature outside the storage chamber and includes humidity. It takes a long time 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 object to be dried is dried with high-temperature air heated by the heating coil using a heat pump that is composed of a compressor, a radiator, an expansion valve (decompression device), and an evaporator, and is capable of circulating the heat exchange medium. A dryer has also been developed in which moisture evaporated from the material to be dried is condensed in a cooling coil to dehumidify, and the condensed water is discarded.

  Even in a dryer using such a heat pump, reduction of vibration generated by the rotation of the rotating drum is desired.

  The present invention has been made to solve the conventional problems, and an object of the present invention is to provide a dryer that can reduce vibrations caused by rotation of a rotating drum.

  The dryer according to the present invention performs a drying operation of an object to be dried in a storage chamber configured in a rotating drum of a drum body, and a compressor, a radiator, a decompression device, and an evaporator are sequentially connected in a circular pipe. A refrigerant circuit and an air circulation path for discharging air exchanged with the radiator by the blowing means into the accommodation chamber and for exchanging heat with the evaporator through the refrigerant chamber. The means is integrally formed as a cassette and is detachably mounted.

  In the dryer according to the second aspect of the present invention, the cassette is attached to the lower portion of the drum body in the above invention.

  According to a third aspect of the present invention, in the dryer according to the first aspect, the cassette is attached to a base to which the drum body is attached.

  In the dryer of the invention of claim 4, in the above inventions, the cassette is removably attached and the air circulation path is constituted by the insertion operation.

  In the present invention, in a dryer that performs a drying operation of an object to be dried in a housing chamber configured in a rotating drum of a drum body, a refrigerant formed by sequentially connecting a compressor, a radiator, a pressure reducing device, and an evaporator in a ring shape A circuit and an air circulation path for discharging air that has exchanged heat with the radiator by the blowing means into the accommodation chamber and exchanging heat between the air passing through the accommodation chamber and the evaporator; and the refrigerant circuit and the blowing means are integrated. Since the cassette is configured and detachably mounted, both the heating by the radiator and the dehumidification by the evaporator are performed in the refrigerant circuit, thereby efficiently performing the drying operation of the object to be dried, Assembling workability and maintenance workability of the means can be remarkably improved.

  In the second aspect of the invention, since the cassette is attached to the lower part of the drum body in the above, the center of gravity of the drum body is lowered to suppress the occurrence of vibration during operation, and the noise can be reduced.

  In the invention of claim 3, since the cassette is attached to the base to which the drum body is attached in claim 1, the center of gravity of the dryer body is lowered and the stability is improved, so that the noise can be reduced. become.

  Further, in the invention of claim 4, in addition to each of the above inventions, the cassette is detachably attached and the air circulation path is constituted by the insertion operation, so that the assembling work can be further facilitated. At the same time, maintenance can be improved.

  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 W that executes a washing operation and a drying operation after the completion of the washing operation as an embodiment of a dryer to which the present invention is applied, and FIG. FIG. 3 and FIG. 4 show sectional views of the washing / drying machine W, respectively.

  The washing / drying machine W according to the embodiment of the present embodiment is used for washing and drying clothes to be washed such as clothes (the clothes to be dried in the drying operation). An opening / closing door 3 for delivering laundry is attached to the center of the upper surface of the main body 1 (the figure is seen through the case of the main body 1). An operation panel (not shown) on which various operation switches and a display unit are arranged is provided on the upper surface of the main body 1.

  In the main body 1, a cylindrical resin-made outer tub drum 2 that is disposed with a cylindrical shaft in the left-right direction and a cylindrical shape that is installed inside the outer tub drum 2 and serves as a washing tub and a dewatering tub. A drum main body D comprising a stainless steel inner drum (rotary drum in the present invention) 5 is provided. And the inside of this inner tub drum 5 is a storage chamber (functioning as a storage chamber in the drying operation) 10 for storing the laundry, which is also arranged with the axis of the cylinder in the horizontal direction, and this rotation The shaft is connected to a shaft 8 of a drive motor (not shown) mounted on the side wall (the back side in FIG. 1) of the outer tub drum 2, and the rotation shaft that is the shaft of the inner tub drum 5 connected to the shaft 8 is the center. The inner tank drum 5 is rotatably held in the outer tank 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 (not shown) through which air and water can flow are formed in the entire peripheral wall of the inner tank drum 5. Further, the stop position of the inner tub 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. Have.

  The drive motor 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. This drive motor is mounted on the other end of the shaft 8 (the back side in FIG. 1), and the drive motor rotates the inner drum 5 at a lower speed during the drying operation than during the washing operation. Is controlled.

  An inner hollow portion 9 is formed in one end (front side in FIG. 1) of the shaft 8, and an air circulation path 72 and an inner tank drum 5 to be described later through a discharge port (not shown) of the hollow portion 9. The inside is in communication.

  A water supply passage (not shown) serving as a water supply means for supplying water into the inner tank drum 5 is provided in the upper portion of the main body 1, and one end of the water supply passage is connected to a water supply source such as tap water through a water supply valve. It is connected. The water supply valve is controlled to be opened and closed by the control device. Further, the other end of the water supply passage is connected to the inside of the outer tub drum 2 and communicates with the inside, and when the water supply valve is opened by the control device, the inner tub drum 5 provided in the outer tub drum 2 is opened. Water (tap water) is supplied to the storage chamber 10 from a water supply source.

  Further, a drainage passage (not shown) is provided at the lower portion of the main body 1 as drainage means for draining the water in the storage chamber 10 in the inner tank drum 5, and one end of the drainage passage is connected to the control device. It communicates with the bottom of the outer tub drum 2 through a drain valve that is controlled to open and close. Further, the other end of the drainage passage is led out of the washing / drying machine W and reaches a drainage groove or the like.

  On the other hand, the air circulation path 72 described above is formed in the main body 1 of the washing / drying machine W from the rear side to the side of the outer tub drum 2. The air circulation path 72 discharges air that has been heat-exchanged with the gas cooler 82 as a radiator by a blower fan 83 as air blowing means into the housing chamber 10, and heat exchanged with the evaporator 85 through the air that has passed through the housing chamber 10. The discharge-side duct member 67, the suction-side duct member 68, and an air passage 69 formed in a drying unit 80, which will be described later, are included. One end of the duct member 67 communicates with the inside of the inner tank drum 5 (the storage chamber 10) through the discharge port of the hollow portion 9 formed at one end of the shaft 8 (front side in FIG. 1). It is connected and fixed to the drum 2, and the other end is connected and fixed to an outlet 69 </ b> B of an air passage 69 formed in the drying unit 80. Further, one end of the duct member 68 is connected and fixed to the outer tub drum 2 so as to communicate with the inside of the inner tub drum 5 (the storage chamber 10) in the outer tub drum 2, and the other end is an inlet 69A of the air passage 69. The connection is fixed. The duct members 67 and 68 are made of metal or heat resistant synthetic resin. Further, the other ends of the duct members 67 and 68 (sides connected to the outlet 69B and the inlet 69A of the air passage) are formed to be slightly narrower toward the tip.

  On the other hand, the drying unit 80 described above includes a refrigerant circuit 95 in which a compressor 81, a gas cooler 82, an expansion valve 84 as a pressure reducing device, and an evaporator 85 are sequentially connected in an annular manner, and the blower fan 83. . The drying unit 80 of the washing / drying machine W according to the present embodiment integrally includes a refrigerant circuit 95 and a blower fan 83, which is housed in a heat insulating box 90 to serve as a cassette, and the center of gravity of the lower portion of the drum body D. It is detachably mounted within a predetermined range below.

  An inlet 69 </ b> A and an outlet 69 </ b> B of the air passage 69 described above are formed on one side surface of the heat insulation box 90 (the innermost surface in FIG. 5). The inlet 69A and the outlet 69B are cylindrical holes, and a seal member 70 such as rubber is attached over the entire circumference of the holes (FIG. 8).

  The heat insulating box 90 is partitioned by a heat insulating partition member 92. One of the heat insulating boxes 90 partitioned by the partition member 92 has an inlet 69A for the air passage 69 and the other has an air passage 69. The outlet 69B is assumed to be located. In FIG. 5, the front partition member 92 in the heat insulation box 90 communicates with one heat insulation box 90 partitioned by the partition member 92 and the other heat insulation box 90. A hole 94 is formed. Thereby, in the heat insulation box 90, the air path in which the air sucked into the one heat insulation box 90 from the inlet 69A enters the other heat insulation box 90 through the communication hole 94 and is discharged from the outlet 69B. 69 is configured.

  And the evaporator 85 is installed in the back in one heat insulation box 90 divided by the partition member 92 (left side in FIG. 5), and the blower fan 83 is installed in this side. The blower fan 83 circulates drying air in the air circulation path 72 into the inner drum 5 during the drying operation, thereby exchanging heat with the gas cooler 82 provided in the air passage 69 of the air circulation path 72. The heated drying air is discharged into the storage chamber 10 in the inner tank drum 5. The blower fan 83 is provided adjacent to the communication hole 94, and the suction port is disposed on the evaporator 85 side and the discharge port is disposed on the communication hole 94 side.

  Further, a gas cooler 82 is installed in the back of the other heat insulating box 90 divided by the partition member 92 (right side in FIG. 5), and a compressor 81 is installed in the front. The compressor 81 is provided in an air passage 69 adjacent to the communication hole 94. That is, the compressor 81 is installed so that the air discharged from the blower fan 83 passes through the compressor 81 through the communication hole 94.

  With this configuration, the air after circulating in the storage chamber 10 by the operation of the blower fan 83 and drying the laundry is partitioned by the partition member 92 from the inlet 69 </ b> A through the duct member 68 of the air circulation path 72. It flows into the air path 69 in one heat insulation box 90, is cooled by exchanging heat with the evaporator 85, dehumidified, and then sucked into the blower fan 83 provided in the front air path 69 and connected to the communication hole. 94 is discharged into the other heat insulating box 90, passes around the compressor 81, is heated by exchanging heat with the gas cooler 82 provided in the air passage 69 on the outlet 69B side, and then exits from the outlet 69B. The inside of the storage chamber 10 is discharged through the duct member 67.

  A plurality of rollers 102 are attached to the bottom surface of the heat insulating box 90 as shown in FIG.

  Here, since the drum body D is vibrated and displaced by the rotation of the inner drum 5, the drum body D is placed on the base 32 positioned on the bottom surface of the main body 1 via the suspension 30 having a vibration absorbing function for reducing vibration and noise. It is fixed. That is, the rotating inner tank drum 5 is mounted on the base 32 via the outer tank drum 2 and the suspension 30.

  On the other hand, an installation stand 100 is attached to the lower part of the outer drum 2. The installation table 100 is a table for attaching the drying unit 80 housed in the heat insulating box 90 as a cassette to the lower portion of the drum body D so that it can be pulled out. The front surface of the installation base 100 is open, and a plurality of grooves 104 as shown in FIGS. 6 and 7 are formed at the bottom. The grooves 104... Are formed so that the heat insulation box 90 is fixed at a predetermined position when the heat insulation box 90 is inserted into the installation table 100, and correspond to the rollers 102. Formed in position.

  Further, two holes (not shown) are formed on the rear surface of the installation base 100, and the discharge-side duct member 67 is inserted and fixed in one hole. A suction-side duct member 68 is inserted and fixed in the other hole.

  Then, the heat insulating box 90 accommodated in the drying unit 80 is moved from the front opening of the installation table 100 to the groove 104 formed on the bottom of the installation table 100, and the rollers 102 formed on the bottom surface of the heat insulation box 90. Are inserted to a position where they all match, the insertion operation causes the duct members 67 and 68 to be connected and fixed to the outlet 69B and the inlet 69A of the air path 69, respectively, thereby forming the air circulation path 72. In addition, since the side connected to the air path 69 of the duct members 67 and 68 is formed to become narrower toward the tip as described above, it can be easily connected to the inlet 69A or the outlet 69B by the insertion operation. it can. Further, since the sealing member 70 is attached to the outlet 69B and the inlet 69A of the air path 69, each duct member 67, 68 is connected to the outlet 69B or the inlet 69A of the air path 69 via the sealing member 70. . Thus, by connecting the inlet 69A and outlet 69B formed in the heat insulating box 90 via the seal member 70 and the duct members 67 and 68, both members can be easily connected to form the air circulation path 72. In addition, it is possible to prevent inconvenience that the air in the air circulation path 72 leaks outside from the connection point.

  The connection between the inlet 69A and the duct member 69 formed in the heat insulating box 90 and the connection between the outlet 69B and the duct member 68 may be sealed using an O-ring 110 as shown in FIG.

In addition, a predetermined amount of carbon dioxide (CO ₂ ) is sealed as a refrigerant in the refrigerant circuit 95, and the high pressure side of the refrigerant circuit 95 becomes a supercritical pressure.

  The above-described control device is a control means for controlling the washing / drying machine W, and operates a drive motor (not shown), opens / closes a water supply valve in a water supply passage, opens / closes a drain valve in a drain passage, operates a compressor 81, and an expansion valve. The aperture adjustment of 84 and the air volume of the blower fan 83 are controlled. Further, the control device controls the temperature of the drying air that has passed through the gas cooler 82 so that the laundry accommodated in the inner tub drum 5 is not discolored and damaged.

  Next, the operation of the washing / drying machine W will be described with the above configuration. 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 starts washing operation. And a control apparatus opens the water supply valve of the water supply channel | path which is not shown in figure, and opens a water supply channel | path. Thereby, water is supplied from the water supply source into the storage chamber 10 of the inner tank drum 5 in the outer tank drum 2. At this time, the drain valve of the drain passage is closed by the control device.

  When a predetermined amount of water accumulates in the storage chamber 10 in the inner tank drum 5, the control device closes the water supply valve and closes the water supply passage. Thereby, the supply of water from the water supply source is stopped.

  Next, the drive motor formed on the side surface of the main body 1 is energized and activated by the control device to rotate the shaft 8, whereby the inner tank drum 5 attached to the shaft 8 starts to rotate 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 is stopped by the control device, the drainage valve of the drainage passage is opened, and water (inside the outer tub drum 2) in the storage chamber 10 of the inner tub drum 5 (that is, in the outer tub drum 2). Washing water) is discharged.

  When the water in the storage chamber 10 of the inner tub drum 5 is discharged, the control device operates the drive motor again to dehydrate the laundry. After performing this dehydration for a predetermined time, the control device closes the drain valve of the drain passage.

  Next, the control device shifts to the rinsing process, and opens the water supply valve of the water supply passage to open the water supply passage. Thereby, water is again supplied from the water supply source to the storage chamber 10 in the inner tank drum 5. When a predetermined amount of water is supplied to the storage chamber 10 in the inner tank drum 5, the control device closes the water supply valve and closes the water supply passage. Thereby, the supply of water from the water supply source is stopped.

  Then, after rinsing by repeating the rotation operation of the drive motor for a predetermined time, the control device stops the drive motor, opens the drain valve of the drain passage, and discharges the rinse water in the storage chamber 10 to the drain passage. When the rinsing water in the storage chamber 10 is discharged, the control device operates the drive motor again, rotates the inner tub drum 5 as described above, and shifts to a dehydration process in which the laundry is dehydrated. At this time, the control device starts the compressor 81 and the blower fan 83 and starts the preheat operation. After performing this dehydration process for a predetermined time, the control device rotates the inner tank drum 5 by the drive motor and shifts to the drying operation.

  In this drying operation, the high-temperature and high-pressure gas refrigerant discharged from the compressor 81 radiates heat at the gas cooler 82 and then reaches the expansion valve 84. The refrigerant is not condensed so far, and the high pressure side of the refrigerant circuit 20 is at a supercritical pressure. The refrigerant reaching the expansion valve 84 is depressurized there, liquefied in the process, and then flows into the evaporator 85 where it absorbs heat from the surroundings, evaporates and is circulated by being sucked into the compressor 81.

  Due to the operation of the blower fan 83, the drying air heated by the heat radiation of the high-temperature and high-pressure refrigerant in the gas cooler 82 exits from the duct member 67 of the air circulation path 72 and flows into the hollow portion 9. The drying air that has flowed into the hollow portion 9 is discharged into the storage chamber 10 from the discharge port 9A. The drying air discharged into the storage chamber 10 warms the material to be dried stored in the inner tank drum 5 (the storage chamber 10), evaporates the moisture, and dries the material to be dried. Air containing moisture by drying the material to be dried flows out of the inner drum 5 from the through hole (not shown) through the storage chamber 10, passes through the duct member 68 of the air circulation path 72, and is insulated from the inlet 69A. It is sucked into an air passage 69 formed in the box 90 and introduced into an evaporator 85 provided there to pass therethrough.

  Moisture contained in the air from the storage chamber 10 (water evaporated from the material to be dried) condenses on the surface of the evaporator 85 in the process of passing through the evaporator 85 and falls as water droplets. Dropped water droplets are discharged from the drainage passage to an external drainage groove or the like via a drain pipe (not shown).

  Air dried by removing moisture by the evaporator 85 is sucked into the blower fan 83 and then discharged toward the communication hole 94. The air passing through the communication hole 94 passes around the compressor 81. At this time, the air cooled by the evaporator 85, sucked into the blower fan 83 and discharged is passed through the periphery of the compressor 81, so that the compressor 81 heated by the operation can be cooled.

  The air that has cooled the compressor 81 flows into the gas cooler 82 and is heated. Then, it exits from the outlet 69B of the air passage 69, enters the duct member 67, is blown into the hollow portion 9 of the shaft 8, and is discharged into the storage chamber 10 in the inner tank drum 5 in the same manner as described above to be covered in the inner tank drum 5. Repeats the cycle of removing moisture from the dried product and drying it.

  By executing such a drying operation for a predetermined time by the control device, the object to be dried in the storage chamber 10 in the inner tank drum 5 is completely dried. In this manner, the air in the air circulation path 72 is heated by the gas cooler 82 and dehumidified by the evaporator 85, whereby the object to be dried can be efficiently dried. In addition, by using a refrigerant whose supercritical pressure is on the high pressure side of the refrigerant circuit, such as carbon dioxide, a large heating capability can be obtained in the gas cooler 82.

  On the other hand, by attaching the drying unit 80 to the lower part of the outer tub drum 2 as described above, the drying unit 80 serves as a weight for the drum body composed of the outer tub drum 2 and the inner tub drum 5, and the rotating drum rotates. The amplitude of the vibration generated when the vibration is suppressed is reduced and the resonance frequency is lowered.

That is, the amplitude can be simply expressed by equation (1) in FIG. The resonance frequency can be simply expressed by the equation (2) in FIG. In equations (1) and (2), A is the amplitude, F is the force, k is the spring constant, m is the weight, c is the viscosity, ω is the angular frequency, and ω ₀ is the resonance frequency. FIG. 11 shows the change in the resonance frequency ω ₀ calculated based on the equations (1) and (2) with the change in the weight m. FIG. 11 shows that the resonance frequency ω ₀ decreases as the mass m increases. Therefore, by attaching the drying unit 80 to the lower part of the outer drum 2 as in the present invention, the resonance frequency ω ₀ is significantly lowered. Further, by attaching a drying unit to the lower part of the drum body D, the amplitude of vibration generated when the inner tub drum 5 rotates can be suppressed, and the resonance frequency ω ₀ can be lowered. As a result, vibration and noise during operation can be significantly reduced.

  In particular, in this case, it is also necessary to use a flexible hose for absorbing vibration and displacement for each duct member 67, 68 of the air circulation path 72 connecting the drying unit 80 including the refrigerant circuit 95 and the blower fan 83 and the drum body D. As a result, the cost of parts can be reduced.

  Further, as in the present embodiment, the drying unit 80 is integrally formed with the refrigerant circuit 95 and the blower fan 83 in the heat insulation box 90 as a cassette and is detachably mounted. Therefore, heating by the gas cooler 82 and dehumidification by the evaporator 85 are performed. By performing both of these in the refrigerant circuit 95, the assembly workability at the time of production and maintenance can be remarkably improved while efficiently performing the drying operation of the laundry. Moreover, by attaching the heat insulation box 90 to the lower part of the drum main body D, the center of gravity of the drum main body D can be lowered, the occurrence of vibration during operation can be suppressed, and the noise can be reduced.

  Furthermore, as described above, the heat insulation box 90 is removably attached and the air circulation path 72 is configured by the insertion operation, so that the assembling work can be further facilitated.

  Next, another embodiment of the dryer to which the present invention is applied will be described with reference to FIGS. In FIG. 12 and FIG. 13, the same reference numerals as those in FIGS. 1 to 9 have the same or similar effects.

  In FIG. 12, 120 is an installation hole for installing the drying unit 80, and the installation hole 120 is formed in the base 32. The installation hole 120 has an opening on the front surface of the base 32, and the heat insulating box 90 of the drying unit 80 is attached to be freely drawable from the opening on the front surface. In addition, a plurality of grooves 104 are formed at the bottom of the installation hole 120 in the same manner as the installation table 100, and when the heat insulating box 90 is inserted into the installation hole 120 by the grooves 104,. The rollers 102 attached to the lower part of the heat insulating box 90 are held.

  In addition, two holes (not shown) communicating with the installation hole 120 are formed on the rear surface of the base 32, and a discharge-side duct member 67 is inserted into one of the holes, so that the heat insulating box 90 of the drying unit 80 is provided. The outlet 69B is connected and fixed via a seal member 70. Further, a duct member 68 on the suction side is inserted into the other hole, and is connected and fixed in the inlet 69A of the heat insulating box 90 via a seal member 70 (see FIG. 8). By connecting the heat insulation box 90 and the duct members 67 and 68 through the seal member 70 in this way, it is possible to prevent inconvenience that the air in the air circulation path 72 leaks outside from the connection location.

  Note that the duct member 67 and the duct member 68 of the present embodiment are made of metal or heat-resistant synthetic resin, and the whole or at least a part thereof is made of a flexible material such as a flexible hose.

  Thus, even when the drying unit 80 accommodated in the heat insulating box 90 is removably mounted in the installation hole 120 formed in the base 32, the center of gravity of the drum body D itself is lowered and stability is increased. As in the above embodiment, vibration and noise during operation can be remarkably reduced.

  Further, the drying unit 80 is configured such that the refrigerant circuit 95 and the blower fan 83 are integrally formed in the heat insulating box 90, and the drying unit 80 is a cassette and is detachably attached to the lower portion of the outer tub drum 2. In addition, the assembly workability during maintenance is remarkably improved.

  In particular, in this embodiment, the drying unit 80 is attached to the base 32 located at the lowermost part of the washing / drying machine W, so that the center of gravity can be further lowered, and a further vibration suppressing effect can be obtained. Will be able to.

  In this case, by using a flexible hose for absorbing vibration and displacement for the duct member 68 and the duct member 69 that connect the drying unit 80 and the drum body D, the internal drum 5 is transmitted to the drying unit 80 by rotation. Vibration can be significantly reduced.

  In each of the above-described embodiments, the drying unit 80 integrally includes the refrigerant circuit 95 and the blower fan 83, which are housed in the heat insulating box 90 to form a cassette, and a predetermined range below the center of gravity below the drum body D. However, the refrigerant circuit 95 and the blower fan 83 may be configured separately and only the refrigerant circuit 95 including the compressor 81 or the refrigerant circuit 95 may be attached to the lower portion of the drum body D. Further, only the compressor 81 may be attached to the lower portion of the drum body D. Further, in each embodiment, the drying unit 80 housed in the heat insulating box 90 and formed as a cassette is attached to be freely drawable, and the air circulation path 72 is formed by the insertion operation. However, the present invention is limited to this. However, any structure may be used as long as at least the drum body D is attached to the base 32 via the suspension 30 and the compressor 81 is attached to the lower portion of the drum body D.

  Further, in each of the above embodiments, the groove 104... Corresponding to the roller 102... Attached to the bottom surface of the heat insulation box 90 of the drying unit 80 is formed at the bottom of the installation table 100 or the installation hole 120. When the roller is inserted, the rollers 102 are all contained in the grooves 104 at a predetermined installation position and can be fixed. However, the present invention is not limited to this. For example, as shown in FIGS. A groove may be formed from the opening to a predetermined position.

  In the embodiments, the present invention is applied to a washing / drying machine having washing and drying functions. However, it is needless to say that the drying machine may have only a single drying function.

It is an internal block diagram of the washing dryer as one Example of the dryer of this invention. It is an internal block diagram of the state which took out the drying unit of the washing-drying machine of FIG. It is sectional drawing of the washing-drying machine of FIG. It is sectional drawing of the washing-drying machine of FIG. It is an internal block diagram of a drying unit. It is a front view of a drying unit and an installation stand. It is a figure which shows a part of drying unit fixed to the installation stand. It is a figure which shows the connection method of a drying unit and a duct member. It is a figure which shows the other connection method of a drying unit and a duct member. It is a figure which shows the formula of an amplitude and a resonant frequency. It is a figure which shows the change of the resonant frequency accompanying a mass change. It is an internal block diagram of the washing-drying machine of the other Example of the dryer of this invention. It is an internal block diagram of the state which took out the drying unit of the washing-drying machine of FIG. It is a front view of the drying unit and installation stand of other Examples. It is a figure which shows a part of drying unit fixed to the installation stand of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body 2 Outer tank drum 3 Opening / closing door 5 Inner tank drum 8 Shaft 9 Hollow part 10 Accommodating chamber 30 Suspension 32 Base 67 Discharge side duct member 68 Suction side duct member 69 Air passage 69A Inlet 69B Outlet 70 Seal member 72 Air circulation Route 80 Drying unit 81 Compressor 82 Gas cooler 83 Blower fan 84 Expansion valve 85 Evaporator 90 Heat insulation box 92 Partition member 94 Communication hole 95 Refrigerant circuit 100 Installation base 102 Roller 104 Groove 110 O-ring 120 Installation hole D Drum body W Washer dryer

Claims (4)

In a dryer that performs a drying operation of an object to be dried in a storage chamber configured in a rotating drum of a drum body,
A refrigerant circuit in which a compressor, a radiator, a pressure reducing device, and an evaporator are sequentially connected in a circular pipe;
An air circulation path for discharging air that has exchanged heat with the radiator by a blowing means into the housing chamber, and for exchanging heat with the evaporator through air that has passed through the housing chamber;
A dryer characterized in that the refrigerant circuit and the air blowing means are integrally formed into a cassette and detachably mounted.   The dryer according to claim 1, wherein the cassette is attached to a lower portion of the drum body.   The dryer according to claim 1, wherein the cassette is attached to a base to which the drum body is attached.   4. The dryer according to claim 1, wherein the cassette is detachably attached and the air circulation path is configured by an insertion operation.

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