JP2006230887A - Washing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance efficiency in evacuation work of evacuating a refrigerant line, injection work of injecting a refrigerant into the refrigerant line, and brazing work of brazing a refrigerant injection port. <P>SOLUTION: An evaporator 45 and a condenser 43 are housed upstream and downstream in a heat exchange duct 54. When a compressor 42 and a fan device 74 are operated, dehumidification is performed based on cooling of air in a water tank 10 by the evaporator 45, and air is warmed based on heating of dehumidified air by the condenser 43. In the case of such constitution, the compressor 42, the condenser 43 and the evaporator 45 are mounted on a common base plate 51. Consequently, since the compressor 42, the condenser 43 and the evaporator 45 can be housed in an outer case 1 together with the base plate 51 after performing refrigerant line evacuating work, refrigerant injecting work and injection port brazing work, efficiency in refrigerant line evacuating work, refrigerant injecting work and injection port brazing work can be enhanced. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a washing machine provided with a refrigeration cycle for cooling and heating wind circulating in a water tank.

Some of the washing machines are configured to forcibly circulate the wind from the outlet of the heat exchange duct through the water tank and back to the inlet of the heat exchange duct. In the case of this configuration, the evaporator and condenser of the refrigeration cycle are housed upstream and downstream in the heat exchange duct, the air is dehumidified based on cooling by the evaporator, and the dehumidified air is heated by the condenser. It is warming. Since this washing machine has good thermal efficiency and can keep the drying temperature low, it has been attracting attention as a technology that replaces the conventional heater drying method in terms of both energy saving and wrinkle reduction.
JP 2004-135715 A Japanese Examined Patent Publication No. 6-75628

  In the case of the above washing machine, since the compressor, condenser and evaporator of the refrigeration cycle are directly fixed to the bottom plate of the outer box, the refrigerant path is evacuated in a state where the pre-piped compressor to evaporator are fixed in the outer box. There is no choice but to perform a vacuuming operation, an injection operation for injecting the refrigerant from the inlet into the refrigerant path, and a brazing operation for caulking the inlet. For this reason, since the work space when performing vacuuming work-brazing work is restricted by the outer box, the efficiency of vacuuming work-brazing work is reduced.

  SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and its purpose is to vacuum a refrigerant path, to inject a refrigerant into the refrigerant path, and to braze a refrigerant inlet. It is an object of the present invention to provide a washing machine that can easily perform the above.

  The washing machine of the present invention includes a water tub stored in an outer box for receiving water, a heat exchange duct stored in the outer box and positioned outside the water tub, and an inlet to an outlet of the heat exchange duct. A fan device for flowing wind, an air supply duct for supplying wind from the outlet of the heat exchange duct into the water tank, an exhaust duct for discharging wind from the water tank to the inlet of the heat exchange duct, and the heat exchange An evaporator of a refrigeration cycle that cools the wind that is stored in the duct and discharged from the water tank into the heat exchange duct, and is stored in the heat exchange duct on the downstream side of the evaporator and is cooled by the evaporator A condenser of a refrigeration cycle for heating wind, and a compressor of a refrigeration cycle for flowing a refrigerant through the condenser and the evaporator, and the heat exchange duct, the evaporator, and the front Capacitor and the compressor is characterized at being mounted on a common base that is housed in the outer box.

  Since the heat exchange duct, evaporator, condenser, and compressor are mounted on a common base that is different from the components of the outer box, the refrigerant path was vacuumed, the refrigerant was injected, and the inlet was brazed. Later, the heat exchange duct to the compressor can be housed together with the base in the outer box. For this reason, since the refrigerant path vacuuming operation to the inlet brazing operation can be performed without being disturbed by the outer box, the efficiency of the refrigerant path vacuuming operation to the inlet brazing operation is increased.

  The outer box 1 is constituted by joining metal plates, and as shown in FIG. 1, has a rectangular box shape with an open bottom surface. A bottom plate 2 made of a metal plate is fixed to the outer box 1, and the lower surface of the outer box 1 is closed by the bottom plate 2. A plurality of legs 3 are fixed to the bottom plate 2, and the plurality of legs 3 are placed on the floor surface.

  A circular recess 4 is formed in the front plate of the outer box 1, and a circular hole-shaped entrance / exit 5 is formed in the bottom plate of the recess 4. A door 6 is accommodated in the recess 4. The door 6 opens and closes the entrance 5 and has a door frame 7, a door glass 8, and a glass cover 9. The door frame 7 has an annular shape and is mounted in the recess 4 of the outer box 1 so as to be rotatable about a vertical axis. The door glass 8 has a circular container shape with an open front surface and is fixed to the door frame 7. The glass cover 9 has a circular plate shape and covers the opening of the door frame 7 and the opening of the door glass 8 from the front.

  A water tank 10 is accommodated in the outer box 1. The water tank 10 functions as a water storage container that receives water, and is supported by the bottom plate 2 of the outer box 1 through a plurality of dampers for vibration control. The water tank 10 has a cylindrical shape with a closed rear surface, and is arranged in an inclined shape in which the axial center line CL descends rearward. A water tank cover 11 is fixed to the front end of the water tank 10. The water tank cover 11 has an annular shape and has a circular opening 13. A rubber bellows 12 is interposed between the water tank cover 11 and the front plate of the outer box 1, and the bellows 12 is watertight between the inlet / outlet 5 of the outer box 1 and the opening 13 of the water tank cover 11. It is connected.

  A drain pipe 14 is connected to the water tank 10 at the lowest part. The drain pipe 14 corresponds to a discharge passage for discharging the water in the water tank 10 to the outside of the machine, and a drain valve 15 is interposed in the drain pipe 14. The drain valve 15 uses a drain valve motor as a drive source, and is switched between an open state in which the drain pipe 14 is opened and a closed state in which the drain pipe 14 is closed in conjunction with driving of the drain valve motor. A water supply valve 16 is accommodated in the outer box 1, and an input port of the water supply valve 16 is connected to a faucet. The output port of the water supply valve 16 is connected to the water tank 10, and tap water is injected into the water tank 10 when the water supply valve 16 is open.

  A bearing stand 17 is fixed to the rear surface of the water tank 10. The bearing base 17 has a cylindrical shape coaxial with the water tank 10, and a stator 18 is fixed to the outer peripheral surface of the bearing base 17, and outer rings of two bearings 19 are fixed to the inner peripheral surface of the bearing base 17. Has been. A rotary shaft 20 is fixed to the inner rings of these bearings 19, and a rotor 21 is fixed to the rear end of the rotary shaft 20, located outside the water tank 10. The stator 18, the rotating shaft 20, and the rotor 21 constitute an outer rotor type washing motor 22, and the rotor 21 of the washing motor 22 is rotatable relative to the stator 18.

  A drum 23 corresponding to a rotating tub is fixed to the rotating shaft 20 of the washing motor 22. The drum 23 has a cylindrical shape with a closed rear surface, and is accommodated coaxially in the water tank 10. A plurality of through holes 24 are formed in the drum 23. These through holes 24 connect the internal space of the drum 23 to the internal space of the water tank 10, and the water in the water tank 10 and the water in the drum 23 flow through each other through the plurality of through holes 24. A circular hole-shaped opening 25 is formed in the front plate of the drum 23. The opening 25 faces the opening 13 of the water tub 10 from the axial direction, and the laundry is put into the drum 23 from the entrance 5 through the opening 13 and the opening 25. The drum 23 is rotated by using the washing motor 22 as a direct drive type driving source. When the drum 23 is rotated at a relatively low speed, the operation of dropping the laundry after being lifted is repeated, so that the relative movement of the drum 23 is increased. During high-speed rotation, the laundry rotates while being stuck to the inner peripheral surface of the drum 23 by centrifugal force.

  The outlet of the air supply duct 26 is connected to the rear plate of the water tank 10 at the top. The air supply duct 26 supplies dry air into the water tank 10 and extends in the vertical direction along the inclination of the rear plate of the water tank 10. An annular wind direction plate 27 is fixed to the rear plate of the water tank 10. A space-like wind passage 28 is formed between the wind direction plate 27 and the rear plate of the water tank 10, and the dry air discharged from the outlet of the air supply duct 26 rotates based on the contact with the wind direction plate 27. It flows toward the shaft 20 side.

  An air supply port 29 is formed in the rear plate of the drum 23 at the center. The air supply port 29 is composed of a plurality of through holes, and an annular drum cover 30 is fixed to the rear plate of the drum 23 at an outer peripheral portion of the air supply port 29. A cylindrical duct 31 is formed on the inner periphery of the drum cover 30. A slip ring 32 is fixed to the duct 31, and the slip ring 32 is in contact with the wind direction plate 27. The slip ring 32 closes a gap between the wind direction plate 27 and the duct 31, and the dry air is discharged from the wind passage 28 into the drum 23 through the duct 31 and the air inlet 29 and escapes through the through hole 24 of the drum 23. To do. An inlet of the exhaust duct 33 is connected to the top of the water tank cover 11. The exhaust duct 33 extends in the vertical direction along the inclination of the water tank cover 11, and the dry air that has escaped from the drum 23 flows into the exhaust duct 33.

  A heat pump unit 40 is accommodated in the outer box 1. The heat pump unit 40 dehumidifies the drying air discharged from the exhaust duct 33 based on cooling, raises the temperature of the low-humidity drying air after dehumidification, and supplies it to the drum 23 from the air supply duct 26. There is a refrigeration cycle 41 as shown in FIG. The refrigeration cycle 41 includes a compressor 42, a condenser 43, a capillary tube 44, an evaporator 45, and an accumulator 46. The order is fixed. Hereinafter, the detailed configuration of the heat pump unit 40 will be described.

  As shown in FIG. 1, a metal base plate 51 corresponding to the base is fixed in the outer box 1. Rubber legs 52 are fixed to the four corners of the base plate 51, and the base plate 51 is held in a horizontal state based on fixing the four legs 52 to the bottom plate 2 of the outer box 1. Yes. Reference numeral 75 denotes a vibration isolation mechanism composed of a plurality of legs 52.

  A heat exchange duct 54 is fixed to the base plate 51 via a plurality of spacers 53. The heat exchange duct 54 has a rectangular tube shape extending straight in the front-rear direction, and a duct-shaped fan casing 55 is joined to the rear end portion of the heat exchange duct 54. A condenser 43 and an evaporator 45 are accommodated in the heat exchange duct 54 at the rear end portion and the front end portion, and the drainage pipe 14 is inserted below the evaporator 45. Reference numeral 56 denotes a screw for fixing the heat exchange duct 54 to the base plate 51 via a spacer 53.

  A rear duct 57 is formed at the rear end of the fan casing 55. Thereafter, a bellows-like air supply hose 58 is interposed between the duct 57 and the air supply duct 26, and the internal space of the heat exchange duct 54 is connected to the air supply duct 26 via the fan casing 55 and the air supply hose 58. It is connected. A front duct 59 is formed at the front end of the heat exchange duct 54. A bellows-shaped exhaust hose 60 is interposed between the front duct 59 and the exhaust duct 33, and the internal space of the heat exchange duct 54 is connected to the exhaust duct 33 via the exhaust hose 60.

  A fan motor 61 is fixed to the fan casing 55. The fan motor 61 is disposed outside the fan casing 55, and a fan 62 is connected to the rotation shaft of the fan motor 61. The fan 62 is housed in a fan casing 55, and an annular bell mouth 63 is fixed in the fan casing 55 in front of the fan 62. The fan 62 is of a centrifugal type that sucks air from the axial direction and discharges it in the centrifugal direction. When the fan motor 61 is driven, the air in the drum 23 passes from the exhaust duct 33 through the exhaust hose 60 to the front end in the heat exchange duct 54. Sucked into the part. Then, it flows backward along the heat exchange duct 54 and is discharged from the air supply hose 58 through the air supply duct 26 into the water tank 10. That is, the evaporator 45 and the condenser 43 are arranged on the upstream side and the downstream side of the air blowing path, and the fan motor 61 and the fan 62 constitute a fan device 74 that allows the wind to flow from the evaporator 45 toward the condenser 43. is there.

  As shown in FIG. 3, a comp base 64 is fixed to the left front corner of the base plate 51. The comp base 64 is composed of a triangular metal plate, and cylindrical spacers 65 are fixed to the three corners of the comp base 64 as shown in FIG. Each of these spacers 65 is made of a metal, and the comp base 64 is fixed on the base plate 51 by tightening screws 77 corresponding to fixing members through the spacers 65 from above.

  The compressor 42 is fixed to the compressor base 64, and the compressor 42 is disposed adjacent to the side of the evaporator 45 with the wall portion of the heat exchange duct 54 interposed therebetween, as shown in FIG. The compressor 42 has a built-in compressor motor, and one end of a connecting pipe 66 is connected to the discharge port of the compressor 42. As shown in FIG. 3, the connection pipe 66 has a straight portion 67 extending in the front-rear direction along the heat exchange duct 54, and the other end of the connection pipe 66 is connected to the condenser 43 in the heat exchange duct 54. Connected to the entrance.

  One end of a connecting pipe 68 is connected to the outlet of the capacitor 43, and the inlet of the capillary tube 44 is connected to the other end of the connecting pipe 68. The capillary tube 44 is disposed outside the heat exchange duct 54, and the outlet of the capillary tube 44 is connected to the inlet of the evaporator 45 in the heat exchange duct 54. One end of a connecting pipe 69 is connected to the outlet of the evaporator 45, and the inlet of the accumulator 46 is connected to the other end of the connecting pipe 69. The accumulator 46 is disposed outside the heat exchange duct 54, and the outlet of the accumulator 46 is connected to the suction port of the compressor 42 via a connecting pipe 70 as shown in FIG.

The following (1) to (3) are steps for manufacturing the refrigeration cycle 41.
(1) The compressor 42, the connecting pipe 66, the condenser 43, the connecting pipe 68, the capillary tube 44, the evaporator 45, the connecting pipe 69, the accumulator 46, and the connecting pipe 70 are brazed together.
(2) Helium gas is sealed in the refrigeration cycle 41, and it is confirmed by a helium detector that helium gas is not leaking.
(3) The helium gas is taken out from the refrigeration cycle 41, evacuated, and then filled with a refrigerant.

  In manufacturing the refrigeration cycle 41 according to the procedures (1) to (3), workability is very poor in a configuration in which the refrigeration cycle 41 is directly attached to the bottom plate 2 of the outer box 1. That is, it is inefficient to perform the brazing operation and the vacuuming operation in an environment where necessary parts for the washing machine are assembled. For this reason, it comprised as the heat pump unit 40 which can handle the several element required in order to comprise the refrigerating cycle 41 independently. Therefore, since the heat pump unit 40 can be assembled in a specialized assembly department, not only the assembly is facilitated, but also facilities and the like can be shared with parts assembly of other products. As a result, capital investment and the like are reduced, and it is possible to manufacture a cheap and good product. In addition, since the test and the like can be performed reliably, the reliability of the product is increased.

  Since the compressor 42 has a built-in mechanism for compressing the refrigerant with a piston or a rotor, a large vibration is generated when the compressor 42 is operated. In order to cope with this, conventionally, a vibration isolating rubber is attached to the comp base 64 to remove vibration. By vibration isolation in this way, vibrations of around 50 Hz are normally transmitted to the outer box 1 to prevent complaints about sound and vibration. However, a connecting pipe 66 is attached to the upper portion of the compressor 42, and the connecting pipe 66 vibrates due to the vibration damping effect of the vibration isolating rubber when the rotation starts. For this reason, it is known that the connecting pipe 66 causes fatigue failure. In order to prevent this, play is provided by making the connecting pipe 66 U-turn or the like to prevent fatigue due to vibration. When this structure is applied to a washing and drying machine, it has been found that problems occur in the dehydration process. That is, when the laundry is unevenly distributed in the drum 23 during dehydration, the drum 23 is greatly shaken. Although this vibration is softly supported by a damper for the purpose of not transmitting the vibration to the outer box 1 as much as possible, the entire outer box 1 still sways during resonance of the vibration system. Compared with other products, very large vibrations are continuously generated inside during steady state. When the flexible support of the heat pump unit 40 is combined with this, the compressor 42 is vibrated for a long time at the resonance point during dehydration or during steady vibration. Since this vibration is larger and longer than the vibration of the compressor 42 itself, the connecting pipe 66 will be fatigued. In order to cope with this, the compressor 42 is integrated with the base plate 51 through the compressor base 64 and the entire heat pump unit 40 is isolated by the rubber legs 52. It becomes difficult to be transmitted to. In addition, the heat pump unit 40 is vibrated at the time of dehydration, but the compressor 42, the evaporator 45, the heat exchange duct 54, and the connecting pipe 66 vibrate integrally, so that the connecting pipe 66 is not fatigued or deformed. That is, it is possible to prevent fatigue breakage of the connecting pipe 66 while having the vibration isolation function of the compressor 42.

  Japanese Patent Application Laid-Open No. 2003-135715 describes a technique in which the refrigeration cycle is arranged in the upper part of the outer box 1. In this configuration, vibrations such that the outer box 1 swings its head around the legs 3 during dehydration occur, so that the compressor 42 is greatly shaken and the possibility that the connecting pipe 66 is fatigued is increased. Moreover, due to the weight balance of the product, there is also a drawback that it is unstable and difficult to carry when being carried. By disposing the heat pump unit 40 at the bottom of the outer box 1, the influence of dehydration vibration can be minimized. In addition, the weight balance becomes stable when the lower portion becomes heavier, making it easier to carry in. In particular, when the heat pump unit 40 is subjected to vibration isolation, vibration isolation can be sufficiently performed only by dealing with less shaking than that provided in the upper portion, so that the vibration isolation function can be maximized.

  A large amount of condensed water adheres to the evaporator 45. The amount of this condensed water is several to ten times that of an air conditioner. The evaporator 45 is composed of a fin-type heat exchanger. In the evaporator 45, aluminum fins are arranged at intervals of “1 mm to 1.5 mm”. For this reason, when a large amount of dew condensation water is generated in the evaporator 45, the space between the fins is filled with the dew condensation water, and it is difficult for the dew condensation water to flow down. Accordingly, the air passage is narrowed, and the characteristics are deteriorated. In order to prevent this, vibration may be used. That is, by arranging the compressor 42 in the vicinity of the evaporator 45, vibration is transmitted from the compressor 42 to the evaporator 45, and condensed water on the fins is dropped.

  In the heat pump unit 40, the two heat exchangers 43 and 45 are used, and since the loss resistance of the air passage is large, the fan 62 having a large static pressure is used. Since the fan 62 has a large input, vibrations also increase. When this is directly attached to the outer box 1, the outer box 1 may be shaken by the vibration of the fan 62, and noise may be generated. In order to cope with this, the fan device 74 is mounted on the base plate 51 via the fan casing 55, and the heat pump unit 40 has a vibration isolation function. For this reason, in addition to the vibration of the compressor 42 being damped, the vibration of the fan 62 can also be damped. Therefore, vibration and noise can be reduced without providing a vibration isolation function with the fan 62 alone.

  As shown in FIG. 1, an inclined surface 71 is formed on the bottom plate of the heat exchange duct 54. The inclined surface 71 descends forward, and the evaporator 45 is fixed on the inclined surface 71. A drain hole 72 is formed in front of the inclined surface 71. The drain hole 72 penetrates the heat exchange duct 54, and the condensed water generated in the evaporator 45 flows forward along the inclined surface 71 and is discharged to the outside of the heat exchange duct 54 through the drain hole 72. . A lint filter 73 is fixed in the heat exchange duct 54. The lint filter 73 catches foreign matter such as lint and is disposed in front of the evaporator 45.

  The outer box 1 contains a control device mainly composed of a microcomputer, and the control device records in the ROM when it detects that the start switch has been operated in a state where a standard course with drying is set. The washing process, the rinsing process, the dehydrating process, and the drying process are sequentially executed based on the control program and the control data.

  In the washing process, tap water is stored in the water tank 10 and the washing motor 22 is rotated at a washing speed. In the washing process, the operation of dropping the laundry in the drum 23 into the water containing the detergent is repeated. Based on this, dirt is discharged from the laundry. In the rinsing process, tap water is newly stored in the water tank 10 and the washing motor 22 is rotated at a rinsing speed. In the rinsing process, the operation of dropping the laundry in the drum 23 into water is repeated. The detergent is discharged from the laundry.

In the dehydration process, the washing motor 22 is rotated at a dehydration speed. In the dehydration process, moisture is extracted from the laundry on the basis that the laundry in the drum 23 rotates while being stuck to the inner peripheral surface of the drum 23 by centrifugal force. It is discharged by centrifugal force. In the drying process, the laundry motor 22 is rotated while the compressor motor and the fan motor 61 are turned on, and the laundry is dried based on blowing warm air to the laundry in the drum 23. In this drying process, as shown in the following (11) to (13), the refrigerant flows in the refrigeration cycle 41, and the drying wind flowing in the heat exchange duct 54 is heat-exchanged.
(11) The high temperature refrigerant discharged from the compressor 42 flows into the condenser 43 through the connection pipe 66. Here, heat exchange is performed between the drying air flowing in the heat exchange duct 54 and the high-temperature refrigerant, and the drying air is warmed. The warm air is supplied from the air supply duct 26 into the water tank 10 and is injected from the water tank 10 into the drum 23 through the air supply port 29. Then, it escapes from the drum 23 through the through hole 24 and returns from the exhaust duct 33 to the heat exchange duct 54.
(12) The refrigerant flows into the capillary tube 44 from the condenser 43 via the connecting pipe 68, and is adjusted to a pressure and flow rate suitable for evaporation.
(13) The refrigerant flows from the capillary tube 44 into the evaporator 45 and evaporates in the evaporator 45. At this time, heat exchange is performed between the drying air returned into the heat exchange duct 54 and the refrigerant in the evaporator 45, and the drying air returned into the heat exchange duct 54 is cooled below the dew point. Based on the dehumidification, the capacitor 43 is supplied.

According to the said Example 1, there exists the following effect.
Since the compressor 42, the condenser 43, the evaporator 45, and the heat exchange duct 54 are mounted on the common base plate 51 that is different from the components of the outer box 1, the refrigerant path evacuation operation and the refrigerant injection operation The compressor 42 to the evaporator 45 can be accommodated in the outer box 1 together with the base plate 51 after performing the brazing operation of the inlet. For this reason, since the refrigerant path vacuuming operation to the inlet brazing operation can be performed without being obstructed by the outer box 1, the efficiency of the refrigerant path vacuuming operation to the inlet brazing operation is increased.

  As shown in FIG. 5, a plurality of compression coil springs 81 are interposed between the evaporator 45 and the heat exchange duct 54. Each of these springs 81 corresponds to a vibration amplifying member, and is attached to the front end portion of the evaporator 45. The evaporator 45 has a structure that easily shakes compared to the capacitor 43. That is, the spring 81 is set to swing with the vibration of the compressor 42 and is set to swing with an amplitude of about “0.1 mm”. For this reason, since the dew condensation water adhering between the fins of the evaporator 45 becomes easy to fall by vibration, it is more reliably prevented that the fins are clogged with the dew condensation water.

  In the second embodiment, the evaporator 45 is supported by the coil spring 81, but is not limited to this, and may be supported by, for example, a leaf spring.

  As shown in FIG. 6, a vibration isolation mechanism 82 is attached to the bottom plate 2 of the outer box 1. The vibration isolation mechanism 82 is composed of four legs 83 fixed to the four corners of the bottom plate 2, and each leg 83 is made of rubber. Each of these legs 83 has an L shape having a horizontal main body portion 84 and a vertical support portion 85, each main body portion 84 is installed on the floor surface, and each support portion 85 passes through the opening portion 86 to form the outer box 1. Has been inserted inside. The opening 86 is formed in the bottom plate 2 of the outer box 1, and the base plate 51 of the heat pump unit 40 is fixed to each support portion 85. That is, the base plate 51 is supported by four rubber legs 83 that place the outer box 1 on the floor surface.

  The legs 83 of the outer box 1 have a vibration isolating function for isolating the heat pump unit 40. This is intended to prevent the vibration of the outer box 1 from being reliably transmitted to the heat pump unit 40. That is, when the vibration isolation leg 52 of the heat pump unit 40 is attached to the bottom plate 2 of the outer box 1, the vibration of the outer box 1 vibrates the leg 52. For this reason, a slight amount of vibration is transmitted to the heat pump unit 40 no matter how much vibration is isolated. This vibration tends to cause the compressor 42 to sway and reduce the reliability of the heat pump unit 40. Supporting the heat pump unit 40 with the legs 83 makes the vibration reduction effect of the heat pump unit 40 remarkable. Since the legs 83 are installed on the floor of the building, the vibration of the outer box 1 is minimized at this point. Therefore, vibration during dehydration is not easily transmitted to the heat pump unit 40 via the legs 83. As a result, unnecessary stress is not applied to the compressor 42 and the connecting pipe 66, and high reliability similar to that of an air conditioner or the like can be ensured.

  As shown in FIG. 7, a through hole 91 is formed in the base plate 51. The through hole 91 corresponds to an opening, and a bolt 92 is inserted into the through hole 91 from below. The bolt 92 is equivalent to a male screw member, and has a head portion 93, a cylindrical first rod portion 94 having a large diameter size, a cylindrical second rod portion 95 having a medium diameter size, and a diameter size. A small cylindrical male screw portion 96 is provided.

  A cylindrical tube portion 97 is formed in the heat exchange duct 54. The cylindrical portion 97 communicates with the external space of the heat exchange duct 54 and is isolated from the internal space of the heat exchange duct 54. A first rod portion 94 of a bolt 92 is inserted into the cylindrical portion 97, and a male screw portion 96 of the bolt 92 is screwed into a transport fitting 98 corresponding to a female screw member. The transport metal fitting 98 is fixed to the water tank 10, and the upper end surface of the head portion 93 is in close contact with the base plate 51 based on the bolts 93 being lifted by the spring force of a plurality of dampers, and the first rod portion. The upper end surface of 94 is in close contact with the heat exchange duct 54 based on the bolt 93 being lifted by the spring force of a plurality of dampers. That is, the bolt 92 fixes the three members in a rocking state based on fastening the base plate 51 and the heat exchange duct 54 to the water tank 10.

  According to the fourth embodiment, the bolt 92 is screwed into the transport metal fitting 98 from the through hole 91 of the base plate 51 through the cylindrical portion 97 of the heat exchange duct 54. For this reason, since the water tank 10 and the heat pump unit 40 can be fastened from below without being obstructed by the presence of the heat pump unit 40, the water tank 10 is prevented from vibrating when the product is transported.

  In a drum-type washing machine, there is shaking of the aquarium. For this reason, when transporting the product, a screw is screwed into the fixing portion of the water tank from the rear surface of the product so that the water tank does not shake inside. Moreover, foamed polystyrene or the like is inserted from the bottom of the outer box 1 to fix the transport metal fitting at the bottom of the water tank. However, in the case of a drum-type washing machine having the heat pump unit 40 mounted on the bottom, it can be fixed from the rear as usual, but cannot be fixed from below. That is, since the heat pump unit 40 occupies an area that covers the entire bottom of the outer box 1, it is impossible to fix the transport metal fittings or the like below the water tank by inserting the polystyrene foam. In order to cope with this, the bolt 92 was inserted from below and screwed into the transport metal fitting 98. For this reason, the water tank 10 is called downward and fixed to the stepped portion of the bolt 92, whereby the water tank 10 is fixed to the heat pump unit 40 via the bolt 92. The cylindrical portion 97 into which the bolt 92 is inserted is provided in a circular shape having a diameter of about “20 mm” in the heat exchange duct 54, and the heat exchange duct 54 can flow dry air using the remaining portion. . By adopting this configuration, the water tank 10 can be fixed downward only by using the bolt 92. In addition, since the height of the heat exchange duct 54 is used, the number of fixing members can be minimized.

The figure which shows Example 1 (sectional drawing which shows the internal structure of a washing machine) Diagram showing heat pump A perspective view showing the appearance of the heat pump unit Diagram showing compressor installation FIG. 1 equivalent diagram showing Example 2. FIG. 1 equivalent diagram showing Example 3. FIG. 1 equivalent diagram showing a fourth embodiment.

Explanation of symbols

1 is an outer box, 10 is a water tank, 26 is an air supply duct, 33 is an exhaust duct, 41 is a refrigeration cycle, 42 is a compressor, 43 is a condenser, 45 is an evaporator, 51 is a base plate (base), and 54 is a heat exchange duct , 74 is a fan device, 75 is a vibration isolation mechanism, 81 is a compression coil spring (vibration amplification member), 82 is a vibration isolation mechanism, 91 is a through hole (opening), 92 is a bolt (male screw member), and 97 is a cylindrical portion , 98 indicates a transport fitting (female screw member).

Claims (7)

A water tank stored in an outer box and receiving water;
A heat exchange duct housed in the outer box located outside the water tank;
A fan device for flowing air from the inlet to the outlet of the heat exchange duct;
An air supply duct for supplying wind into the water tank from an outlet of the heat exchange duct;
An exhaust duct for discharging wind from the water tank to the inlet of the heat exchange duct;
An evaporator of a refrigeration cycle that is housed in the heat exchange duct and cools the air discharged from the water tank into the heat exchange duct;
A condenser of a refrigeration cycle that is stored in the heat exchange duct and is located downstream of the evaporator and that heats the air cooled by the evaporator,
A compressor of a refrigeration cycle for flowing a refrigerant to the condenser and the evaporator,
The washing machine, wherein the heat exchange duct, the evaporator, the condenser, and the compressor are attached to a common base housed in the outer box.   The washing machine according to claim 1, wherein the base is mounted in the outer box through a vibration isolation mechanism.   The washing machine according to claim 1, wherein the evaporator is disposed in the vicinity of the compressor.   The washing machine according to any one of claims 1 to 3, wherein the evaporator is mounted in the heat exchange duct via a swing amplification member. The outer box is installed on the floor via a vibration isolation mechanism,
The washing machine according to any one of claims 1 to 4, wherein the base is mounted in the outer box via the vibration isolation mechanism.   The washing machine according to claim 1, wherein the fan device is attached to the base. A cylindrical portion provided in the heat exchange duct and isolated from the internal space of the heat exchange duct;
An opening provided in the base;
A female screw member provided in the water tank;
2. A male screw member that is screwed into the female screw member from the opening of the base through the cylindrical portion of the heat exchange duct and fixes the water tank to the base plate and the heat exchange duct. The washing machine according to any one of -6.

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