JP2019141247A - washing machine - Google Patents

Abstract

To provide a washing machine capable of inhibiting dew condensation water from being discharged to the outside of a heat exchange unit.SOLUTION: A dishwasher 1 includes: a washer body 2; and a heat exchange unit 60 having a heat exchanger 64, an exhaust port 73 provided above the heat exchanger 64, and a housing 62 for accommodating the heat exchanger 64 to which the exhaust port 73 is provided. The housing 62 includes a heat exchange part 70 and a duct part 72. The heat exchange part 70 includes a first back board 76 constituting a back face of the housing 62. The duct part 72 includes a second back board 82 constituting the back face of the housing 62, which is provided abutting against an upper end part of the first back board 76. A protrusion 82a that protrudes in an exhaust space S2 is provided in a lower end part of the second back board 82.SELECTED DRAWING: Figure 9

Description

  The present invention relates to a washing machine.

  As a conventional washing machine, for example, one described in Patent Document 1 is known. The cleaning machine described in Patent Document 1 includes a main body having a cleaning chamber, a heat exchanger that condenses the water vapor discharged from the cleaning chamber, and a heat exchanger that is provided above the heat exchange unit and that stores water vapor condensed in the heat exchanger. An exhaust unit that exhausts air with reduced inclusion amount, and a heat exchange unit that houses a heat exchanger and has a casing provided with the exhaust unit.

JP 2011-206111 A

  In the heat exchange unit, dew condensation water due to dew condensation is likely to occur on the exhaust part side provided above the heat exchanger in the housing. Condensed water generated in the casing flows down the casing along the inner surface of the casing. In particular, in the conventional washer, the back surface of the housing is composed of a single plate member, so that condensed water flows down along the back surface. It is not preferable that the dew condensation water generated in the heat exchange unit is discharged to the outside because of sanitary aspects and influence on the electrical system. Therefore, normally, in the heat exchange unit, a seal member is disposed between the rear surface of the housing and the frame constituting the housing so that the condensed water in the housing is not discharged to the outside. However, it is difficult to completely prevent the condensed water from being discharged to the outside by the sealing member.

  An object of this invention is to provide the washing machine which can suppress that condensed water is discharged | emitted outside the heat exchange unit.

  A washing machine according to the present invention is a washing machine for washing an object to be washed contained in a washing room, the washing room, an opening for discharging water vapor from the washing room, a door capable of opening and closing the washing room, A heat exchanger that condenses the water vapor discharged from the opening, and an air exhaust unit that discharges air whose water content is reduced by the heat exchanger and is provided above the heat exchanger And a heat exchange unit including a heat exchanger and a housing provided with an exhaust part, the housing having a first housing in which a housing space for housing the heat exchanger is formed. A first housing having a body portion and a second housing portion provided at an upper portion of the first housing portion, in which an exhaust space communicating with the accommodation space is formed and an exhaust portion is provided. The portion has a first plate member that forms an accommodation space and that forms one side surface of the housing The second housing portion forms an exhaust space and constitutes one side surface of the housing. The second housing portion includes a second plate member that is provided to abut against the upper end portion of the first plate member. A projecting portion that projects into the exhaust space is provided at the lower end of the.

  In the heat exchange unit, condensation is unlikely to occur in the first housing part in which the heat exchanger is accommodated, and condensation is likely to occur in the second housing part provided above the heat exchanger. Therefore, in the washing machine according to the present invention, one side surface of the housing is constituted by two members, the first plate member and the second plate member, and the protruding portion is provided at the lower end portion of the second plate member. With this configuration, the dew condensation water generated in the second housing part flows downward along the second plate member and reaches the protruding part. The protruding portion protrudes into the exhaust space. Therefore, the dew condensation water that has reached the protrusion is discharged into the exhaust space by the protrusion and is discharged into the accommodation space that communicates with the exhaust space. The condensed water discharged into the storage space is discharged into the cleaning chamber through the opening. Therefore, in the washing machine, it is possible to suppress the dew condensation water generated in the second housing part from being transmitted to the first plate member. Therefore, in the washing machine, it is possible to suppress the dew condensation water from flowing down to the lower part of the housing through the first plate member. Therefore, in the washing machine, it is possible to suppress the condensed water from being discharged to the outside of the heat exchange unit.

  In the washing machine according to the present invention, a folded portion may be provided at the upper end of the first plate member, and the tip of the folded portion may be disposed in the accommodation space. In the washing machine having this configuration, when the condensed water is transmitted from the second plate member to the first plate member, the condensed water first comes into contact with the folded portion at the upper end portion of the first plate member. Condensed water that has come into contact with the folded portion is dripped from the tip through the folded portion. Therefore, even if the dew condensation water is transmitted from the second plate member to the first plate member, the dew condensation water can be prevented from flowing down along the first plate member. Therefore, in the washing machine, it is possible to further suppress the condensed water from being discharged to the outside of the heat exchange unit.

  In the washing machine according to the present invention, the door is provided so as to be movable up and down, the first housing part is provided to face the first plate member, forms an accommodation space, and the door is directed upward. It has a third plate member that the rear opening of the door faces when moved, and the lower end portion of the third plate member is located below the upper outer surface of the door located at the lowest height position in the vertical direction. You may do it. When the door moves upward and the cleaning chamber is opened, water vapor remaining in the cleaning chamber may be released from the opening behind the door. Since the third plate member is provided close to the heat exchanger, it is cooled. Therefore, when water vapor contacts the third plate member, the water vapor is condensed and condensation may occur. In the washing machine, the lower end portion of the third plate member is positioned below the upper outer surface of the door. With this configuration, in the washer, the condensed water generated in the third plate member is discharged to the cleaning chamber through the third plate member. Therefore, in the washing machine, it is possible to suppress the condensed water from being discharged to the outside of the heat exchange unit.

  ADVANTAGE OF THE INVENTION According to this invention, it can suppress that condensed water is discharged | emitted outside the heat exchange unit.

FIG. 1 is a perspective view of a dishwasher according to an embodiment. Drawing 2 is a sectional view showing a schematic structure of a dishwasher concerning one embodiment. FIG. 3 is a side view showing the internal configuration of the dishwasher. FIG. 4 is a perspective view showing the heat exchange unit. FIG. 5 is a side view showing the internal configuration of the dishwasher with the door open. FIG. 6 is a diagram showing a cross-sectional configuration of the dishwasher. FIG. 7 is a rear view of the heat exchange unit. FIG. 8 is a rear view of the heat exchange unit. FIG. 9 is a diagram illustrating a cross-sectional configuration of the housing. FIG. 10 is a perspective view showing the first back plate. FIG. 11 is a diagram illustrating a cross-sectional configuration of the housing. FIG. 12 is a perspective view showing members constituting the duct portion. FIG. 13 is a perspective view showing the second back plate. FIG. 14 is a cross-sectional view showing a part of the lower part of the heat exchange unit.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same or equivalent elements will be denoted by the same reference numerals, and redundant description will be omitted. The dimensional ratios in the drawings do not necessarily match those described. In the following description, directions defined in FIG. 1 (vertical direction, front-rear direction, left-right direction (width direction)) are used for the description.

  As shown in FIGS. 1 and 2, the dishwasher 1 has a washing machine body (main body part) 2 covered with a stainless steel panel. The cleaning machine main body 2 is partitioned into an upper portion 2A in which the cleaning chamber 3 is formed and a lower portion 2B in which the machine chamber 4 is formed. In the corner portion on the back side of the cleaning machine main body 2, a support column 6 extending in the vertical direction is arranged across the upper portion 2 </ b> A and the lower portion 2 </ b> B, and the back panel 5 is disposed between the support columns 6 and 6. .

  A box-shaped door 7 for opening and closing the cleaning chamber 3 is provided on the upper portion 2 </ b> A of the cleaning machine body 2. The door 7 is guided by a pair of stainless steel columns 6 and 6 so as to be movable up and down, and is moved up and down by a handle 8A extending horizontally in front. The door 7 is positioned at the lowest height position in the vertical direction and opens the cleaning chamber 3 at the first position P1 (see FIG. 5) for closing the cleaning chamber 3 and at the highest height position in the vertical direction. It moves between the second position P2 (see FIG. 5).

  The ends of a pair of left and right turning arms 8B, 8B are fixed to both ends of the handle 8A, and the turning arms 8B, 8B are disposed obliquely along the side surface 7A of the door 7. One end of a link portion 8C disposed along the side surface 7A of the door 7 is rotatably connected to the rotation arms 8B and 8B, and the other end of the link portion 8C is connected to the door 7 via a shaft pin 8D. The door 7 is vertically movable with respect to the rotational movement of the handle 8A. Legs 9 are attached to the four corners of the bottom surface of the cleaning machine main body 2.

  As shown in FIG. 2, a rack rail 11 is detachably arranged in the cleaning chamber 3, and dishes (washing objects) such as dishes and teacups after eating and drinking are arranged on the rack rail 11. A grid-like tableware rack is placed. In the upper part of the cleaning chamber 3, an upper cleaning nozzle 12A composed of three arms extending radially and an upper rinse nozzle 13A composed of two arms are rotatably arranged. Similarly, a lower cleaning nozzle 12B composed of three arms extending radially and a lower rinse nozzle 13B composed of two arms are rotatably disposed in the lower part of the cleaning chamber 3. Washing water is sprayed from above and below by the upper cleaning nozzle 12A and the lower cleaning nozzle 12B, and the rinsing water is sprayed from above and below by the rinsing nozzles 13A and 13B.

  A cleaning pump 23 is connected to the front wall of the cleaning water tank 15 via a cleaning water suction port. A cleaning water discharge pipe 21 is connected to the discharge port of the cleaning pump 23. The cleaning water discharge pipe 21 branches into a first cleaning water discharge pipe 21A and a second cleaning water discharge pipe 21B, and the first cleaning water discharge pipe 21A is connected to the upper cleaning nozzle 12A, and the second cleaning water discharge pipe 21B is connected to the lower cleaning nozzle 12B.

  A rinsing water tank 25 to which rinsing water is supplied from the outside via a water supply pipe (not shown) is disposed in the machine room 4. A rinse pump 27 is connected to the rinse water tank 25 via a rinse water suction pipe 29. A rinse water discharge pipe 31 is connected to the discharge port of the rinse pump 27. The rinse water discharge pipe 31 branches into a first rinse water discharge pipe 31A and a second rinse water discharge pipe 31B, and the first rinse water discharge pipe 31A is connected to the upper rinse nozzle 13A, and the second rinse water discharge pipe 31B is connected to the lower rinse nozzle 13B. The first rinse water discharge pipe 31A is disposed in the first cleaning water discharge pipe 21A. That is, the first cleaning water discharge pipe 21A and the first rinse water discharge pipe 31A have a double pipe structure.

  Housed in the machine room 4 is an electrical box (not shown) in which a controller (control unit) 50 for controlling the overall operation of the dishwasher 1 is incorporated.

  As shown in FIG. 3, the cleaning machine main body 2 has an opening 2 </ b> H that exhausts water vapor in the cleaning chamber 3. The opening 2H is formed through the back panel 5 in the thickness direction (front-rear direction). The opening 2 </ b> H is disposed at the upper end of the back panel 5 of the cleaning machine body 2. The opening 2 </ b> H extends along the width direction of the cleaning machine body 2.

  As shown in FIGS. 1 and 3, the dishwasher 1 includes a heat exchange unit 60. The heat exchange unit 60 includes a housing 62, a heat exchanger 64, and an exhaust fan 68. The heat exchange unit 60 condenses the water vapor discharged from the cleaning chamber 3 of the cleaning machine main body 2 and discharges the air with the reduced amount of water vapor (hereinafter also simply referred to as “air”) to the outside. In the heat exchange unit 60, the heat exchanger 64 and the exhaust fan 68 are arranged in this order from the upstream side in the path through which water vapor (air) flows.

  The housing 62 accommodates the heat exchanger 64 and the exhaust fan 68. The housing 62 is a box-shaped member. The casing 62 constitutes a flow path (duct) through which the water vapor exhausted from the cleaning chamber 3 is circulated and the air heat-exchanged by the heat exchanger 64 is circulated. The casing 62 is fixed to the back panel 5 of the cleaning machine body 2. Specifically, brackets 62 a and 62 b (see FIG. 4) provided at the lower end portion of the housing 62 are fixed to the upper end portion of the back panel 5 of the cleaning machine body 2. The housing 62 extends in the vertical direction on the back side of the cleaning machine body 2.

  As shown in FIG. 5, the housing 62 includes a heat exchange part (first housing part) 70 and a duct part (second housing part) 72. The heat exchange unit 70 accommodates the heat exchanger 64. The heat exchanging portion 70 is formed with a housing space S1 (see FIG. 9) for housing the heat exchanger 64. The heat exchanging unit 70 is provided facing the first front plate 74 and the first front plate (third plate member) 74 constituting a part of the front surface (one side surface) of the housing 62, and the housing 62. The first back plate (first plate member) 76 constituting a part of the back surface (one side surface) of the body 62, and a pair of first side plate 77 and second side plate 78 (see FIG. 7) facing each other. doing. The first front plate 74, the first back plate 76, the first side plate 77, and the second side plate 78 are plate-like members. The first front plate 74 and the first back plate 76 are arranged at a predetermined interval and form an accommodation space S1. The first side plate 77 and the second side plate 78 are arranged at a predetermined interval and form an accommodation space S1.

  The first front plate 74 is a surface on which the rear opening of the door 7 faces when the door 7 is opened. The first front plate 74 has thermal conductivity. In the present embodiment, the first front plate 74 is close to or in contact with the heat exchanger 64. Thereby, when water is supplied to the heat exchanger 64 and the heat exchanger 64 is cooled, the first front plate 74 is also cooled. The first front plate 74 is at a temperature lower than that of water vapor when the door 7 is opened. Therefore, the 1st front board 74 contacts with the water vapor | steam discharge | released from opening of the door 7, and condenses water vapor | steam. Thereby, the water vapor condenses into water (water droplets).

  As shown in FIG. 6, the lower end portion of the first front plate 74 is located below the upper outer surface 7B of the door 7 located at the first position P1 (see FIG. 5). Specifically, the lower end portion of the first front plate 74 is located above the seal portion 44. The seal portion 44 is provided on the back panel 5 and protrudes forward from the back panel 5. With this configuration, the dew condensation water generated on the first front plate 74 flows downward along the first front plate 74 and falls from the first front plate 74 to the seal portion 44. The condensed water that has fallen on the seal portion 44 flows along the inclination of the seal portion 44 and is discharged into the cleaning chamber 3. The first front plate 74 and the seal portion 44 constitute a discharge path for discharging condensed water generated in the first front plate 74 to the cleaning chamber 3.

  As shown in FIG. 7 or FIG. 8, the first back plate 76 is detachably provided in the heat exchange unit 70. As illustrated in FIG. 8, by removing the first back plate 76, a water supply pipe 64 a and a drain pipe 64 b described later connected to the heat exchanger 64 are exposed. Therefore, in the dishwasher 1, the heat exchanger 70 can be maintained by removing the first back plate 76.

  As shown in FIGS. 9 and 10, a folded portion 76 a is provided at the upper end portion of the first back plate 76. The folded portion 76 a is formed by bending the tip of the first back plate 76. The folded portion 76 a faces the inner surface of the first back plate 76. The angle formed by the folded portion 76a and the inner surface of the first back plate 76 is preferably 90 ° or less. The folded portion 76a is locked to the frame member 75a.

  The heat exchange unit 70 includes a first inner plate 79a and a second inner plate 79b between the first front plate 74 and the first back plate 76, and the first side plate 77 and the second side plate. 78, a third inner plate 79c and a fourth inner plate 79d are provided. The first inner plate 79a and the second inner plate 79b are disposed to face each other in the front-rear direction. The third inner plate 79c and the fourth inner plate 79d are disposed to face each other in the left-right direction.

  The first inner plate 79 a is disposed on the first front plate 74 side, and is disposed to face the first front plate 74. The first front plate 74 and the first inner plate 79a are arranged at a predetermined interval. The second inner plate 79 b is disposed on the first back plate 76 side and is disposed to face the first back plate 76. The first back plate 76 and the second inner plate 79b are arranged at a predetermined interval. The third inner plate 79 c is disposed on the first side plate 77 side and is disposed to face the first side plate 77. The third inner plate 79c and the first side plate 77 are arranged at a predetermined interval. The fourth inner plate 79d and the second side plate 78 are arranged at a predetermined interval. The first inner plate 79a, the second inner plate 79b, the third inner plate 79c, and the fourth inner plate 79d form an accommodation space S1 that accommodates the heat exchanger 64 and a flow path through which water vapor flows. Yes.

  The lower ends of the first inner plate 79a, the second inner plate 79b, the third inner plate 79c, and the fourth inner plate 79d are connected to the intake portion 79e via a frame member 75b (see FIG. 14). . The intake part 79e is provided at the lower end of the heat exchange part 70. The intake portion 79e is connected to the back panel 5 of the cleaning machine body 2.

  As shown in FIG. 4, the intake part 79 e of the heat exchange part 70 has an intake port 71. The intake port 71 takes water vapor into the housing 62. The intake port 71 is provided in the lower part of the heat exchange part 70 (housing 62). The intake port 71 is connected to an opening 2 </ b> H provided in the back panel 5 of the cleaning machine body 2. Thus, the cleaning chamber 3 of the cleaning machine main body 2 and the heat exchange unit 70 (housing 62) communicate with each other.

  The duct part 72 is provided in the upper part of the heat exchange part 70. As shown in FIG. 9, the duct portion 72 is fixed to the frame member 75a. Thereby, the heat exchange part 70 and the duct part 72 are connected. As shown in FIG. 11, the duct portion 72 has an exhaust space S <b> 2 that communicates with the accommodation space S <b> 1 of the heat exchange portion 70 and a discharge port (exhaust portion) 73. The duct portion 72 accommodates the exhaust fan 68. The duct portion 72 is provided opposite to the second front plate 80 that constitutes a part of the front surface of the housing 62 and the second front plate 80, and the second front plate 80 that constitutes a part of the back surface of the housing 62. It has two back plates (second plate members) 82, a pair of side plates 84 and 85 (see FIG. 12) facing each other, an upper plate 86, and a bottom plate 88 facing the upper plate 86.

  As shown in FIG. 12, in the present embodiment, the second front plate 80, the pair of side plates 84 and 85, and the bottom plate 88 are integrally provided. As shown in FIGS. 11 and 12, a protrusion 80 a is provided at the lower end of the second front plate 80. The protruding part 80a protrudes from the inner surface of the second front plate 80 into the exhaust space S2 (inside the duct part 72). The protruding portion 80a is formed by bending a part of the second front plate 80. In the present embodiment, the second front plate 80 and the protrusion 80a form an angle of approximately 90 °. The protruding portion 80 a extends along the width direction of the second front plate 80. The protrusion amount of the protrusion 80a may be set as appropriate, but is preferably set to an extent that does not hinder the air flow.

  The second back plate 82 is detachably provided in the duct portion 72. The second back plate 82 is provided substantially flush with the first back plate 76. The lower end portion of the second back plate 82 is abutted against the upper end portion of the first back plate 76. The fact that the lower end portion of the second back plate 82 and the upper end portion (folded portion 76a) of the first back plate 76 are abutted is the second direction in the width direction of the first back plate 76 and the second back plate 82. It means that at least a part of the lower end portion of the back plate 82 and the upper end portion of the first back plate 76 are in contact with each other. That is, the lower end portion of the second back plate 82 and the upper end portion (folded portion 76 a) of the first back plate 76 are in contact with each other. The lower end portion of the second back plate 82 and the upper end of the first back plate 76 are The part may not be in contact at all positions.

  As shown in FIGS. 11 and 13, a protruding portion 82 a is provided at the lower end portion of the second back plate 82. The protruding portion 82a protrudes from the inner surface of the second back plate 82 into the exhaust space S2 (inside the duct portion 72). The protruding portion 82a is formed by bending a part of the second back plate 82. In the present embodiment, the second back plate 82 and the protruding portion 82a form an angle of approximately 90 °. The angle formed by the second back plate 82 and the protrusion 82a is preferably 90 ° or more. Thereby, it can suppress that dew condensation water accumulates in the protrusion part 82a. The protruding portion 80 a extends along the width direction of the second front plate 80. The protrusion amount of the protrusion 80a may be set as appropriate, but is preferably set to an extent that does not hinder the air flow.

  As shown in FIG. 11, the pair of side plates 84 and 85, the upper plate 86 and the bottom plate 88 form a discharge port 73. A part of the pair of side plates 84, 85, a part of the upper plate 86, and the bottom plate 88 protrude forward from the heat exchange unit 70. The upper plate 86 and the bottom plate 88 are inclined. Specifically, the upper plate 86 and the bottom plate 88 are inclined so that the second back plate 82 side is lower than the discharge port 73.

  The discharge port 73 discharges air having a reduced water vapor content to the outside. The discharge port 73 is provided in the duct portion 72. That is, the discharge port 73 is provided above the heat exchanger 64. The discharge port 73 communicates with the intake port 71. A grill 89 (see FIGS. 1 and 3) is disposed at the discharge port 73. Since the exhaust fan 68 is covered by the grill 89, it is possible to prevent an operator or the like from coming into contact with the exhaust fan 68.

  The heat exchanger 64 has fins and flow path pipes (both not shown). As shown in FIG. 8, a water supply pipe 64a is connected to one end of the flow path pipe. The water supply pipe 64a supplies water to the flow path pipe. Water is supplied to the water supply pipe 64a from a water source such as a water supply (not shown). A drain pipe 64b is connected to the other end of the flow path pipe. The drain pipe 64b discharges the water that has passed through the flow path pipe. The drain pipe 64 b is connected to the rinse water tank 25. That is, the water flowing through the flow path pipe of the heat exchanger 64 is discharged to the rinse water tank 25. The heat exchanger 64 is in contact with water vapor flowing through the housing 62. The heat exchanger 64 performs heat exchange between water flowing through the flow path pipe and water vapor.

  As shown in FIG. 11, the exhaust fan 68 is disposed in the casing 62 in the downstream portion of the water vapor (air) flow path. The exhaust fan 68 is disposed in the duct portion 72. The exhaust fan 68 is disposed in the vicinity of the discharge port 73 of the duct portion 72. In the present embodiment, four exhaust fans 68 are provided. The exhaust fans 68 are arranged side by side along the width direction. The exhaust fan 68 is attached to the bracket 90. The number of exhaust fans 68 is set as appropriate.

  Next, the operation of the dishwasher 1 will be described. First, when the power switch is turned on, the dishwasher 1 supplies hot water into the wash water tank 15 by injecting hot water in the wash water tank 15 into the wash chamber 3 by the rinse pump 27. The temperature of the hot water in the washing water tank 15 is set to about 80 ° C., for example. Thereby, initial hot water supply is performed. Then, an amount of detergent corresponding to the initial hot water supply amount is supplied into the washing water tank 15, and the detergent concentration of the washing water in the washing water tank 15 becomes a predetermined concentration.

  After the initial hot water supply, when the user racks the tableware and closes the door 7, it is detected by a door switch (not shown) that the door is closed, and an operation start signal is input to the controller 50. When the operation start signal is input to the controller 50, the washing of the dishes is started. The cleaning of the dishes is performed by spraying the cleaning water in the cleaning water tank 15 toward the tableware in the cleaning chamber 3. The temperature of the cleaning water in the cleaning water tank 15 is set to be 60 ° C. to 70 ° C., for example.

  When the cleaning pump 23 is started, the cleaning water stored in the cleaning water tank 15 is pumped to the upper cleaning nozzle 12A and the lower cleaning nozzle 12B via the cleaning water discharge pipe 21 and the like, and the upper cleaning nozzle 12A. And it sprays toward the tableware in the washing room 3 from the lower side washing nozzle 12B. At this time, since the upper cleaning nozzle 12A and the lower cleaning nozzle 12B continue to rotate due to the reaction force of the jet force, the cleaning water is uniformly applied to the dishes, and the dishes are efficiently washed away.

  The washing water sprayed into the washing chamber 3 is collected in the washing water tank 15 while the remaining vegetables washed away from the dishes are removed by the filter 18. The cleaning water collected in the cleaning water tank 15 is circulated and supplied again into the cleaning chamber 3 by the cleaning pump 23. When the cleaning of the dishes with the cleaning water is performed for a predetermined time, the operation of the cleaning pump 23 is stopped. Thereby, operation | movement of the dishwasher 1 pauses temporarily.

  Next, when the rinsing pump 27 is started, the rinsing water stored in the cleaning water tank 15 is pumped to the upper and lower rinsing nozzles 13A and 13B via the rinsing water discharge pipe 31 and the like, and each rinsing is performed. It sprays toward the tableware from the nozzles 13A and 13B. The temperature of the rinse water pumped from the washing water tank 15 is set to around 80 ° C., for example. At this time, since each of the rinsing nozzles 13A and 13B also continues to rotate due to the reaction force of the injection force, the rinsing water is uniformly applied to the tableware, and the tableware is efficiently rinsed.

  The rinsing water sprayed on the tableware is collected in the washing water tank 15 through the filter 18 and mixed with the washing water, and used as washing water in the next washing step. When rinsing water is sprayed into the cleaning chamber 3 and collected in the cleaning water tank 15, excess cleaning water exceeding a certain water level is discharged to the outside from an overflow pipe (not shown).

  When rinsing water is jetted from the upper rinsing nozzle 13 </ b> A and the lower rinsing nozzle 13 </ b> B to the tableware, water vapor is generated in the cleaning chamber 3. In the dishwasher 1 of the present embodiment, when the rinsing process is started, the exhaust fan 68 starts to operate, and water vapor generated in the cleaning chamber 3 is discharged by the exhaust fan 68. The operation start timing of the exhaust fan 68 is not limited to this timing, and may be started from a cleaning process in which water is jetted from the upper cleaning nozzle 12A and the lower cleaning nozzle 12B.

  When water vapor is discharged from the cleaning chamber 3 by the exhaust fan 68, the water vapor is sent out to the heat exchanger 64 of the heat exchange unit 60 through the opening 2H. The water vapor flows through a flow path formed by the accommodation space S1 in which the heat exchanger 64 is disposed. In the heat exchanger 64, heat exchange is performed between “water vapor” flowing through the flow path and “water” flowing through the heat exchanger 64.

  The air whose water vapor content is reduced flows through the exhaust space S <b> 2 and is discharged from the discharge port 73. When the air contacts the duct portion 72, dew condensation water may be generated in the duct portion 72. The condensed water generated in the duct portion 72 travels through the upper plate 86 and the second back plate 82 and reaches the protruding portion 82 a of the second back plate 82. The condensed water that has reached the protrusion 82a is discharged from the protrusion 82a to the exhaust space S2. As shown in FIG. 14, the dew condensation water discharged into the exhaust space S2 passes through the housing space S1, and is discharged from the opening 2H of the cleaning machine body 2 into the cleaning chamber 3 through the intake portion 79e. Thereby, for example, the dew condensation water does not reach the connecting portion between the second side plate 78 (the first front plate 74, the first back plate 76, the first side plate 77) and the frame member 75b. It can suppress that dew condensation water is discharged | emitted outside from between 75b.

  When the exhaust fan 68 is operated to collect the water vapor in the cleaning chamber 3 for a predetermined time, the operation of the exhaust fan 68 is stopped. When the operation of the exhaust fan 68 is stopped, the flow of water vapor to the heat exchanger 64 is stopped. At this time, there is almost no water vapor (steam) in the cleaning chamber 3.

  Then, the effect of the dishwasher 1 which concerns on this embodiment is demonstrated. In the heat exchange unit 60, condensation is unlikely to occur in the heat exchange part 70 in which the heat exchanger 64 is accommodated, and condensation is likely to occur in the duct part 72 provided above the heat exchanger 64. Therefore, in the dishwasher 1 according to the above embodiment, the back surface of the housing 62 is configured by two members, the first back plate 76 and the second back plate 82, and protrudes from the lower end portion of the second back plate 82. A portion 82a is provided. With this configuration, the condensed water generated in the duct portion 72 flows downward through the second back plate 82 and reaches the protruding portion 82a. The protrusion 82a protrudes into the exhaust space S2. Therefore, the dew condensation water that has reached the protruding portion 82a is discharged to the exhaust space S2 by the protruding portion 82a, and is discharged to the accommodating space S1 that communicates with the exhaust space S2. The condensed water discharged into the storage space S1 is discharged into the cleaning chamber 3 through the opening 2H. Therefore, in the dishwasher 1, it is possible to suppress the dew condensation water generated in the duct portion 72 from being transmitted to the first back plate 76. Therefore, in the dishwasher 1, it is possible to suppress the dew condensation water from flowing down to the lower part of the housing 62 along the first back plate 76. Therefore, in the dishwasher 1, it can suppress that dew condensation water is discharged | emitted outside the heat exchange unit 60. FIG. Thereby, it can avoid that a sanitary problem and the influence on an electrical equipment system arise by discharge | emission of the dew condensation water to the exterior of the dishwasher 1. FIG.

  In the dishwasher 1 according to the embodiment, the upper end portion of the first back plate 76 is provided with a folded portion 76a. The tip of the folded portion 76a is disposed in the accommodation space S1. In the dishwasher 1 having this configuration, when the condensed water is transmitted from the second back plate 82 to the first back plate 76, the condensed water first comes into contact with the folded portion 76 a at the upper end of the first back plate 76. Condensed water that has come into contact with the folded-back portion 76a is dripped from the tip thereof along the folded-back portion 76a. Therefore, even when condensed water is transmitted from the second back plate 82 to the first back plate 76, it is possible to suppress the condensed water from flowing down through the first back plate 76. Therefore, in the dishwasher 1, it is possible to further suppress the condensed water from being discharged to the outside of the heat exchange unit 60.

  In the dishwasher 1 which concerns on the said embodiment, the door 7 is provided so that vertical movement is possible. The heat exchanging unit 70 is provided to face the first back plate 76 and forms an accommodation space S1, and the first front plate 74 that the rear opening of the door 7 faces when the door 7 moves upward. Have. The lower end portion of the first front plate 74 is located below the upper outer surface 7B of the door 7 located at the first position P1 (see FIG. 5). When the door 7 moves upward and the cleaning chamber 3 is opened, water vapor remaining in the cleaning chamber 3 may be released from the opening behind the door 7. Since the first front plate 74 is provided close to the heat exchanger 64, it is cooled. Therefore, when water vapor contacts the first front plate 74, the water vapor is condensed and condensation can occur. In the dishwasher 1, the lower end portion of the first front plate 74 is positioned below the upper outer surface 7 </ b> B of the door 7. With this configuration, in the dishwasher 1, the condensed water generated in the first front plate 74 is discharged to the cleaning chamber 3 through the first front plate 74. Therefore, in the dishwasher 1, it can suppress that dew condensation water is discharged | emitted outside the heat exchange unit 60. FIG.

  In the dishwasher 1 which concerns on the said embodiment, the upper board 86 of the duct part 72 inclines so that the 2nd back board 82 side may become low. Thereby, the dew condensation water which generate | occur | produced in the upper board 86 of the duct part 72 flows into the 2nd back board 82 side. Therefore, in the dishwasher 1, the dew condensation water can be reliably discharged into the washing chamber 3. As a result, the dishwasher 1 can suppress the dew condensation water from being discharged to the outside of the heat exchange unit 60.

  As mentioned above, although embodiment of this invention has been described, this invention is not necessarily limited to embodiment mentioned above, A various change is possible in the range which does not deviate from the summary.

  In the above-described embodiment, an example is provided in which the protruding portion 80a is provided at the lower end portion of the second front plate 80 constituting the front surface of the housing 62 and the protruding portion 82a is provided at the lower end portion of the second back plate 82 constituting the rear surface. Explained. However, protrusions may also be provided at the lower ends of the side plate 84 and the side plate 85 constituting the side surface of the housing 62. That is, in the duct portion 72, a protrusion may be provided at the lower end portion of the member that constitutes one side surface of the housing 62.

  In the embodiment described above, an example in which the protruding portion 82a is formed by bending a part of the second back plate 82 has been described. However, the protrusion 82a may be provided on the second back plate 82 by welding or the like.

  In the above embodiment, the form in which the protruding portion 82a is provided at the lowermost portion of the second back plate 82 has been described as an example. However, the protruding portion 82 a only needs to be provided at the lower end portion of the second back plate 82.

  In the said embodiment, the form which the upper plate 86 of the duct part 72 inclined was demonstrated to an example. However, the upper plate 86 is not necessarily inclined.

  The present invention may appropriately combine the contents described in the above embodiment, the above modified examples, and other modified examples without departing from the spirit of the invention.

  DESCRIPTION OF SYMBOLS 1 ... Dishwasher, 2 ... Washing machine main body, 2H ... Opening part, 3 ... Cleaning room, 7 ... Door, 60 ... Heat exchange unit, 62 ... Housing, 73 ... Outlet (exhaust part), 64 ... Heat exchange 70 ... heat exchange part (first housing part), 72 ... duct part (second housing part), 74 ... first front plate (third plate member), 76 ... first back plate (first plate) Member), 76a ... folded portion, 82 ... second back plate (second plate member), S1 ... accommodation space, S2 ... exhaust space.

Claims (3)

A washing machine for washing an object to be washed contained in a washing room,
A main body having the cleaning chamber, an opening for discharging water vapor from the cleaning chamber, and a door capable of opening and closing the cleaning chamber;
A heat exchanger that condenses the water vapor exhausted from the opening, and an exhaust part that exhausts air whose amount of water vapor is reduced by the heat exchanger and is provided above the heat exchanger; A heat exchange unit having a housing that houses the heat exchanger and is provided with the exhaust portion,
The housing is
A first housing part in which a housing space for housing the heat exchanger is formed;
A second housing part provided at an upper part of the first housing part, wherein an exhaust space communicating with the accommodation space is formed and the exhaust part is provided;
The first housing portion includes a first plate member that forms the housing space and constitutes one side surface of the housing,
The second casing portion includes a second plate member that forms the exhaust space and constitutes the one side surface of the casing, and is provided to abut against an upper end portion of the first plate member. ,
The washing machine, wherein a lower end portion of the second plate member is provided with a protruding portion protruding into the exhaust space. The upper end portion of the first plate member is provided with a folded portion,
The cleaning machine according to claim 1, wherein a tip of the folded portion is disposed in the accommodation space. The door is provided to be movable up and down,
The first casing portion is provided opposite to the first plate member, forms the accommodation space, and a third plate member that faces an opening behind the door when the door moves upward. Have
The lower end part of the said 3rd board member is a washing machine of Claim 1 or 2 located below the upper outer surface of the said door located in the lowest height position in an up-down direction.

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