JP7787690B2 - washing machine - Google Patents

Description

The present invention relates to a cleaning machine.

Patent Document 1 discloses a washing machine that washes objects stored in a washing chamber, and includes a housing that defines the washing chamber, a washing tank that stores washing water for washing the objects, a washing pump that sprays the washing water stored in the washing tank from a washing injection hole into the washing chamber, a rinsing tank that stores rinsing water for rinsing the objects, a rinsing pump that sprays the rinsing water stored in the rinsing tank from a rinsing injection hole into the washing chamber, and a control box that is located on top of the housing and stores a control board.

Japanese Patent Application Publication No. 10-211154

When cleaning water or rinsing water is sprayed into the cleaning chamber of a cleaning machine, steam accumulates at the top of the cleaning chamber, causing the upper part of the chamber to become hot. This can also cause the temperature inside the control box located at the top of the housing that forms the cleaning chamber to become high. If the control board housed in the control box becomes too hot, it may malfunction. For this reason, it is necessary to dissipate the heat from the control board housed in the control box to the outside.

Therefore, the object of the present invention is to provide a cleaning machine that can effectively dissipate heat from the control board housed in the control box.

The cleaning machine of the present invention is a cleaning machine that cleans objects stored in a cleaning chamber, and includes a housing that forms the cleaning chamber, a cleaning tank that stores cleaning water for cleaning the objects, a cleaning pump that sprays the cleaning water stored in the cleaning tank into the cleaning chamber from a cleaning injection hole, and a control box that is located at the top of the housing and is equipped with a control board and a heat sink attached to the control board, and an opening is provided at the bottom of the control box that exposes the heat sink to the outside of the control box.

In the cleaning machine according to the present invention, even when cleaning water is sprayed into the cleaning chamber, causing steam to accumulate at the top of the cleaning chamber and making the top of the cleaning chamber hot, an opening exposing the heat sink to the outside is provided at the bottom of the control box, allowing the heat from the control board to be released to the outside of the control box via the heat sink. This allows the heat from the control board housed in the control box to be effectively released to the outside. Furthermore, because the heat sink is located between the top of the cleaning chamber and the control board, it is possible to prevent the heat from the cleaning chamber from being directly transferred to the control board. This prevents the control board from becoming too hot. This in turn prevents malfunctions from occurring in the control board.

In the cleaning machine according to the present invention, the housing has an upper portion and a side portion connected to the edge of the upper portion, and is equipped with one or more fasteners for fixing the control box to the upper portion, which may be located near the edge of the upper portion. Because the edge of the upper portion of the housing is connected to the side portion, it has higher rigidity than the portions other than the edge. Therefore, by locating the fasteners near the edge, it is possible to prevent vibrations generated in the housing during the cleaning process, etc., from being transmitted to the control box. This makes it possible to prevent malfunctions in the control boards and other components housed in the control box.

In the cleaning machine according to the present invention, the upper part is inclined so that the edges of the upper part are lower in the vertical direction than the center of the upper part, and at least a portion of the bottom of the control box may be inclined along the inclination of the upper part. In this configuration, by inclining at least a portion of the bottom along the inclination of the upper part, it is possible to increase the capacity of the control box without increasing the height dimension of the control box.

In a cleaning machine according to the present invention, the control box accommodates components that are taller than the control board, and the bottom portion comprises a first bottom surface and a second bottom surface that is lower in height than the first bottom surface. The control board may be arranged in a first region defined by the first bottom surface within the control box, and the components may be arranged in a second region defined by the second bottom surface within the control box. In this configuration, the components that are taller are arranged in the second region that is taller (deeper) within the control box. This allows for effective use of the space within the control box.

This invention allows for effective dissipation of heat from the control board housed in the control box.

FIG. 1 is a perspective view of a dishwasher according to one embodiment. FIG. 2 is a diagram showing a schematic configuration of the dishwasher. FIG. 3 is a diagram showing the components housed in the control box. FIG. 4 is a diagram showing the main body of the control box. FIG. 5 is a perspective view of the main body of the control box as seen from below. FIG. 6 is a partial cross-sectional view of a control box disposed on the upper panel. FIG. 7 is a side view of the main body of the control box. FIG. 8 is a perspective view of the main body of the control box housing the heat sink, as seen from below. FIG. 9 is a top view showing the control box disposed on the upper panel.

The following describes a dishwasher (washing machine) 100 according to one embodiment, with reference to the drawings. In the description of the drawings, identical elements are given the same reference numerals, and duplicate explanations will be omitted. For ease of explanation, the front-to-rear direction, left-to-right direction, and up-to-down direction are respectively defined in Figure 1.

As shown in FIG. 1, the dishwasher 100 according to one embodiment is an under-counter dishwasher with a door 15 provided on the front of the washing chamber 1B. As shown in FIGS. 1 and 2, the dishwasher 100 includes a main body 1, a door 15, a washing tank 20, an upper nozzle 3, a lower nozzle 4, a washing pump 5, a rinsing tank 6, a rinsing pump 7, a detergent supply pump 8, a rinse aid supply pump 9, and a control board C.

The main body 1 is formed by a frame (not shown), a stainless steel exterior panel 11, and an interior panel 2. The exterior panel 11 has a pair of side panels 11A, 11A that form the left and right sides, an upper panel 11B, an upper front panel 11C, a lower front panel 11D, and a rear panel 11E. At least the lower front panel 11D is easily detachable from the frame. Legs 12 are attached to the four corners of the lower part of the main body 1. The upper front panel 11C is provided with an operating panel 13 that controls various operations of the dishwasher 100.

The operation unit 13 is used to input the operating mode and various settings. In this embodiment, the operation unit 13 is composed of an LCD screen and tempered glass (electrostatic switches) covering it. The operator can perform various operations by touching the tempered glass covering the LCD screen. The operation unit 13 may be composed of various buttons and a touch panel, or may be composed of a remote control, operation terminal, etc. that is separate from the main body 1.

The lower region of the main body 1 contains a machine chamber 1A housing a washing tank 20, a washing pump 5, a rinsing tank 6, a rinsing pump 7, a detergent supply pump 8, and a rinse aid supply pump 9. When viewed vertically, the machine chamber 1A defines a space extending in the front-to-back and left-to-right directions. The upper region of the main body 1 contains a washing chamber 1B housing a rack on which dishes (items to be washed) D and other items are set. The washing chamber 1B is the space above the washing tank 20 and is formed by an interior panel (housing) 2. The interior panel 2 mainly includes a pair of side panels (side portions) 2A, 2A, an upper panel (upper portion) 2B, a front panel 2C (see Figure 6), and a rear panel (not shown). The upper ends of the side panels 2A, 2A, the front panel 2C, and the rear panel are connected to the edge 2E of the upper panel 2B (see Figure 9).

The upper panel 2B is inclined so that the edges 2E are lower in the vertical direction than the center of the upper panel 2B. In this embodiment, the upper panel 2B has a rectangular shape when viewed vertically, and the straight lines connecting the diagonal corners of the upper panel 2B form ridgelines (dashed lines shown in Figure 9), and the four edges 2E of the upper panel 2B are inclined so that they are lower in the vertical direction than the center of the upper panel 2B. The upper panel 2B is divided into four regions (regions with roughly triangular shapes) with the ridgelines as boundaries, and each region slopes downward from the center of the upper panel 2B toward the edges 2E.

Rack rails 23 that support the racks are formed on the inner surfaces of the pair of side panels 2A, 2A. An opening 1C is formed in the main body 1 to allow the racks holding dishes D and other items to be inserted and removed from the washing chamber 1B. The rack rails 23 may be formed integrally with the side panels 2A, 2A by extrusion, or may be formed by attaching other members to the inner surfaces of the side panels 2A, 2A.

The door section 15 is located outside the opening section 1C. The door section 15 is arranged to be able to open and close the opening section 1C, and when the door section 15 is opened, the cleaning chamber 1B is exposed to the outside of the main body section 1. The door section 15 is arranged to be rotatable around an axis extending in the left-right direction at the bottom end of the door section 15. The operator can open the cleaning chamber 1B by pushing the handle 15A arranged at the top end of the door section 15 towards themselves.

The wash tank 20 is located below the wash chamber 1B. The wash tank 20 stores wash water used to wash dishes D and other items stored in the wash chamber 1B. The wash water is sprayed into the wash chamber 1B during the washing process. The wash tank 20 separates the machine chamber 1A from the wash chamber 1B and has a water receiving section (not shown) that receives and guides water sprayed from the upper nozzle 3 and the lower nozzle 4 and that falls after washing or rinsing the dishes D into the storage section, and a storage section that stores wash water supplied to the upper nozzle 3 and the lower nozzle 4 by the wash pump 5. In this embodiment, the wash tank 20 refers to the storage section unless otherwise specified. The wash tank 20 extends with its longitudinal direction extending from front to back. The wash tank 20 is equipped with a wash water detection section 24, a wash water heater 25A, and a wash water temperature sensor 25B.

The flush water detection unit 24 detects the level of flush water stored in the flush tank 20. The flush water detection unit 24 is, for example, a switch that turns ON when the water level in the flush tank 20 exceeds the constant water level H1 and turns OFF when the water level is below the constant water level H1. The detection results from the flush water detection unit 24 are acquired by the control board C. If the flush pump 5, which will be described in detail later, sucks in air while operating, a so-called air entrapment occurs, preventing the upper nozzle 3 and lower nozzle 4 from spraying flush water. In one embodiment, the operation of the flush pump 5 is stopped when the flush water detection unit 24 turns OFF during operation, thereby preventing the flush pump 5 from sucking in air.

The wash water heater 25A heats the wash water stored in the wash tank 20 to improve sterilization and cleaning capabilities. The wash water temperature sensor 25B detects the temperature of the wash water stored in the wash tank 20. The wash water temperature sensor 25B is, for example, a thermistor. The detection results from the wash water temperature sensor 25B are acquired by the control board C. The ON/OFF switching of the wash water heater 25A is controlled by the control board C. For example, the wash water heater 25A is controlled by the control board C to maintain the wash water at a predetermined temperature based on the water temperature detected by the wash water temperature sensor 25B.

A circular through-hole 20b is formed in the bottom 20a of the cleaning tank 20. The through-hole 20b is a circular plate-shaped member with multiple elongated holes that penetrate through it in the thickness direction, and is covered by a pump guard 26 that prevents the intrusion of foreign matter. The through-hole 20b is connected to the cleaning pump 5 via a connection part 50. The connection part 50 is formed with a first connection hole 50a that connects to the through-hole 20b, a drain hole 50b that connects to a drain pipe 28 that discharges water outside the main body 1, and a second connection hole 50c that connects to the cleaning pump 5. The connection part 50 may be configured integrally with the cleaning pump 5 as part of the casing that makes up the cleaning pump 5, or it may be provided separately from the cleaning pump 5 as a member that connects the cleaning tank 20 and the cleaning pump 5.

The cleaning tank 20 is provided with an overflow pipe 27 that extends vertically. The overflow pipe 27 allows water that exceeds a predetermined water level in the cleaning tank 20 to flow in from its upper end and drain outside the cleaning tank 20, thereby regulating the level of cleaning water stored in the cleaning tank 20. The lower end of the overflow pipe 27 passes through a burred pump guard 26 that covers the through-hole 20b and is removably inserted into a drain hole 50b formed in the connection part 50. By removing the lower end of the overflow pipe 27 from the drain hole 50b, the cleaning water stored in the cleaning tank 20 can be drained via the through-hole 20b and the drain hole 50b.

The upper nozzle 3 is located above the cleaning chamber 1B. The upper nozzle 3 is rotatably mounted on an upper support member 21A located above the cleaning chamber 1B. The upper nozzle 3 has a main body 30 that extends radially from the base end, which is the center of rotation of the rotation axis of the upper nozzle 3, to the tip end. The main body 30 is integrally formed with a cleaning injection hole 31 that sprays cleaning water stored in the cleaning tank 20, a cleaning flow path 32 that extends from the rotation center to the cleaning injection hole 31 and through which the cleaning water flows, a rinsing injection hole 33 that sprays rinsing water stored in the rinsing tank 6, and a rinsing flow path 34 that extends from the rotation center to the rinsing injection hole 33 and through which the rinsing water flows. The upper nozzle 3 rotates when the flow of cleaning water generated in the cleaning flow path 32 or the flow of rinsing water generated in the rinsing flow path 34 is converted into rotational force. The upper nozzle 3 is connected to an upper cleaning pipe 58 that supplies cleaning water to the cleaning flow path 32 and an upper rinsing pipe 78 that supplies rinsing water to the rinsing flow path 34.

The lower nozzle 4 is located below the cleaning chamber 1B. The lower nozzle 4 is rotatably mounted on a lower support member 21B located below the cleaning chamber 1B. The lower nozzle 4 has a main body 40 extending radially from the base end, which is the center of rotation of the rotation axis of the lower nozzle 4, to the tip end. The main body 40 is integrally formed with a cleaning injection hole 41 that sprays cleaning water stored in the cleaning tank 20, a cleaning flow path 42 that extends from the center of rotation to the cleaning injection hole 41 and through which the cleaning water flows, a rinsing injection hole 43 that sprays rinsing water stored in the rinsing tank 6, and a rinsing flow path 44 that extends from the center of rotation to the rinsing injection hole 43 and through which the rinsing water flows. The lower nozzle 4 rotates when the flow of cleaning water generated in the cleaning flow path 42 or the flow of rinsing water generated in the rinsing flow path 44 is converted into rotational force. The lower nozzle 4 is connected to a lower cleaning pipe 59 that supplies cleaning water to the cleaning flow path 42 and a lower rinsing pipe 79 that supplies rinsing water to the rinsing flow path 44.

Dishes D arranged on the dish rack are sprayed with washing water by the upper nozzle 3 and the lower nozzle 4 during the washing process, and rinsing water is sprayed by the upper nozzle 3 and the lower nozzle 4 during the rinsing process.

The wash pump 5 is located in the machine room 1A. The wash pump 5 delivers wash water stored in the wash tank 20 to the wash chamber 1B, which contains dishes D and other items. The wash pump 5 takes in wash water from the wash tank 20 via the connection 50 and delivers the wash water to the upper nozzle 3 and the lower nozzle 4. An upper wash pipe 58 is connected to a first discharge port of the wash pump 5. The upper wash pipe 58 is connected to the upper nozzle 3. A lower wash pipe 59 is connected to a second discharge port of the wash pump 5. The lower wash pipe 59 is connected to the lower nozzle 4.

The rinsing tank 6 is located in the machine chamber 1A. The rinsing tank 6 stores rinsing water used to rinse dishes D and the like. The rinsing water is sprayed into the washing chamber 1B during the initial hot water supply process and the rinsing process. Water is supplied to the rinsing tank 6 from an external water source via a water supply pipe 60. A strainer 60A is provided in the water supply pipe 60. A valve 60B is provided downstream of the strainer 60A in the water supply pipe 60.

The rinse tank 6 is equipped with a rinse water detection unit 62, an overflow unit 63, a rinse water heater 64A, and a rinse water temperature sensor 64B.

The rinse water detection unit 62 is a switch that detects when the water stored in the rinse tank 6 is at a constant water level H2. The detection results of the rinse water detection unit 62 are acquired by the control board C. The valve 60B is controlled by the control board C. For example, the control board C opens and closes the valve in conjunction with the detection of the constant water level H2 by the rinse water detection unit 62, controlling the valve 60B to maintain a constant level of rinse water stored in the rinse tank 6.

The overflow section 63 discharges water that exceeds the full water level in the rinsing tank 6. The rinsing tank 6 is a sealed tank that exceeds the full water level, for example, when valve 60B experiences a closed valve abnormality. The rinsing water heater 64A heats the rinsing water stored in the rinsing tank 6 to improve sterilization and rinsing capabilities. The rinsing water temperature sensor 64B detects the temperature of the rinsing water. The detection results from the rinsing water temperature sensor 64B are acquired by the control board C. The ON/OFF switching of the rinsing water heater 64A is controlled by the control board C. For example, the rinsing water heater 64A is controlled by the control board C to maintain the rinsing water at a predetermined temperature based on the water temperature detected by the rinsing water temperature sensor 64B.

The rinsing pump 7 sends out rinsing water stored in the rinsing tank 6 to the washing chamber 1B, which contains tableware D and other items. The rinsing pump 7 takes in rinsing water from the rinsing tank 6 and sends it out to the upper nozzle 3 and lower nozzle 4. The outlet of the rinsing pump 7 is connected to an upper rinsing pipe 78 and a lower rinsing pipe 79 via a rinsing pipe 77. The upper rinsing pipe 78 is connected to the upper nozzle 3. The lower rinsing pipe 79 is connected to the lower nozzle 4.

The detergent supply pump 8 is located in the machine room 1A. The detergent supply pump 8 supplies detergent stored in the detergent tank 8A to the cleaning chamber 1B via piping 8B. The detergent dispensed into the cleaning chamber 1B flows into the cleaning tank 20 and mixes with the cleaning water. The rinse agent supply pump 9 is located in the machine room 1A. The rinse agent supply pump 9 supplies rinse agent stored in the rinse agent tank 9A to the rinsing piping 77 via piping 9B. The rinse agent supplied to the rinsing piping 77 is mixed with the rinsing water and supplied to the cleaning chamber 1B via the upper nozzle 3 and the lower nozzle 4.

The control box 10 is located between the upper panel 11B of the main body 1 and the upper panel 2B that constitutes the washing chamber 1B. The control box 10 has a rectangular shape when viewed vertically. The control box 10 is made of resin. The control box 10 houses a control board C. The control board C controls the overall operation of the dishwasher 100. The control board C is a computer system or processor implemented on an integrated circuit. The control board C is composed of a CPU (Central Processing Unit), ROM (Read Only Memory), RAM (Random Access Memory), an input/output interface, etc. Various programs and data are stored in the ROM.

As shown in FIG. 3, the control box 10 is provided with a heat sink H, a buzzer B, a reactor R, and a switching regulator S in addition to a control board C. The control board C is disposed on the heat sink H. Specifically, the heat sink H is provided with a recess Ha, and the control board C is disposed within the recess Ha. The control board C is fixed to the heat sink H with fasteners (e.g., screws). The reactor R and the switching regulator S are components that are taller than the control board C.

As shown in Figures 4 and 5, the control box 10 has a main body 10A and a lid 10B (see Figure 9). The main body 10A is box-shaped. It forms a space to house the control board C and other components. The main body 10A is composed of a bottom 10C, four side sections 10D, and two legs 10E.

The bottom portion 10C is composed of a first bottom surface 10Ca, a second bottom surface 10Cb, and a stepped surface 10Cc. The first bottom surface 10Ca and the second bottom surface 10Cb are at different heights. The first bottom surface 10Ca is higher than the second bottom surface 10Cb. In other words, the second bottom surface 10Cb is lower than the first bottom surface 10Ca. The first bottom surface 10Ca and the second bottom surface 10Cb are connected by the stepped surface 10Cc. The stepped surface 10Cc connects the first bottom surface 10Ca and the second bottom surface 10Cb and extends in the vertical direction.

A portion of the bottom 10C is inclined. Specifically, as shown in FIGS. 6 and 7, the portion of the bottom 10C that forms the first bottom surface 10Ca is inclined along the slope of the upper panel 2B. As described above, as shown in FIG. 9, the upper panel 2B slopes downward from the center of the upper panel 2B (the position of the upper support portion 21A) toward the edge 2E, with the straight line connecting the diagonal corners of the upper panel 2B as the ridgeline (the dashed line in FIG. 9). In this configuration, when the control box 10 is positioned so as to straddle the ridgeline (when positioned across two areas defined by the ridgeline), the first bottom surface 10Ca of the bottom 10C is inclined along the slope of the area where the second bottom surface 10Cb is located. In this embodiment, the first bottom surface 10Ca of the bottom 10C is inclined along the slope of the area that slopes downward from the center of the upper panel 2B toward the edge 2E where the control box 10 is connected to the front panel 2C.

As shown in FIG. 4, an opening 10H is provided in the portion of the bottom portion 10C that constitutes the first bottom surface 10Ca. The opening 10H is generally rectangular. As shown in FIG. 8, the opening 10H exposes the heat sink H to the outside of the control box 10. As shown in FIG. 7, the side portion 10D has a cutout 10Da through which piping for passing wiring and the like is arranged. The lid portion 10B (see FIG. 9) is detachably attached to the side portion 10D. The legs 10E are provided on the bottom portion 10C. The legs 10E are provided at the corners of the bottom portion 10C that constitute the first bottom surface 10Ca. The length of the legs 10E is set appropriately depending on the inclination of the upper panel 2B on which the control box 10 is placed.

As shown in Figures 3 and 7, in the control box 10, the control board C and heat sink H are arranged in the first area A1. The first area A1 is an area defined by the first bottom surface 10Ca of the bottom portion 10C. The first area A1 is located on the rear side in the front-to-rear direction. As shown in Figures 3 and 6, the heat sink H is provided with a flange Hb, which is arranged on the first bottom surface 10Ca of the bottom portion 10C. The control board C is arranged in the recess Ha of the heat sink H as described above. As a result, the control board C and heat sink H are arranged in the first area A1. The control board C and heat sink H are arranged at an inclination corresponding to the inclination of the first bottom surface 10Ca.

In the control box 10, the buzzer B, reactor R, and switching regulator S are arranged in the second area A2. The second area A2 is an area defined by the second bottom surface 10Cb of the bottom portion 10C. The second area A2 is located on the front side in the front-to-rear direction. The buzzer B, reactor R, and switching regulator S are arranged side by side in the left-to-right direction in the second area A2. As shown in FIG. 7, in the main body 10A, the second area A2 has a larger height dimension (deeper) than the first area A1.

As shown in Figure 9, the control box 10 is located on the front and right side of the upper panel 2B. The control box 10 is located on the upper panel 2B so that its longitudinal direction is aligned with the left-right direction and its lateral direction is aligned with the front-to-rear direction.

The control box 10 is fixed to the upper panel 2B by fasteners 2F. In this embodiment, two fasteners 2F are provided. The fasteners 2F are located near the edge 2E of the upper panel 2B. In this embodiment, a position near the edge 2E means a position within a predetermined distance in the left-right direction from the edge 2E of the upper panel 2B. In this embodiment, the fasteners 2F are located near the right edge 2E of the upper panel 2B and near the left edge 2E of the upper panel 2B.

Next, the effects of the dishwasher 100 of this embodiment will be described. In the dishwasher 100 of the above embodiment, even when wash water is sprayed into the wash chamber 1B and water vapor accumulates in the upper part of the wash chamber 1B, causing the upper part of the wash chamber 1B to become hot, the opening 10H that exposes the heat sink H to the outside is provided in the bottom 10C of the control box 10, so the heat from the control board C can be released to the outside of the control box 10 via the heat sink H. This allows the heat from the control board C housed in the control box 10 to be effectively released to the outside. Furthermore, because the heat sink H is located between the upper panel 2B of the wash chamber 1B and the control board C, the heat from the wash chamber 1B can be prevented from being directly transferred to the control board C. This prevents the control board C from becoming too hot. This prevents malfunctions in the control board C.

In the dishwasher 100, even if condensation occurs on the backside of the upper panel 11B due to a temperature difference, such as when the ambient temperature of the dishwasher 100 is low, the opening 10H is provided in the bottom 10C of the control box 10, and the opening 10H faces downward, preventing water from entering the control box 10. Furthermore, in the dishwasher 100, the control board C is placed on the heat sink H, so the control board C is exposed by removing the lid 10B of the control box 10. This allows for easy maintenance of the control board C. Furthermore, because the heat sink H is heavy, placing it in the opening 10H provided in the bottom 10C of the control box 10 positions the heat sink H lower within the control box 10, stabilizing the center of gravity of the control box 10 and enabling stable installation of the control box 10.

In the dishwasher 100 according to this embodiment, the interior panel 2 constituting the washing chamber 1B includes an upper panel 2B and side panels 2A, 2A connected to the edge 2E of the upper panel 2B. The dishwasher 100 is equipped with one or more fasteners 2F that secure the control box 10 to the upper panel 2B. The fasteners 2F are positioned near the edge 2E of the upper panel 2B. Because the edge 2E of the upper panel 2B is connected to the side panels 2A, 2A, it has higher rigidity than the portions other than the edge 2E. Therefore, by positioning the fasteners 2F near the edge 2E, vibrations generated in the interior panel 2 during the washing process, etc., can be prevented from being transmitted to the control box 10. This prevents malfunctions in the control board C, etc. housed in the control box 10.

In the dishwasher 100 according to this embodiment, the upper panel 2B is inclined so that the edge 2E is lower in the vertical direction than the center of the upper panel 2B. A portion of the bottom 10C of the control box 10 is inclined to match the inclination of the upper panel 2B. In this configuration, by inclining a portion of the bottom 10C to match the inclination of the upper panel 2B, the capacity of the control box 10 can be increased without increasing the height dimension of the control box 10.

In the dishwasher 100 according to this embodiment, the control box 10 houses a reactor R and a switching regulator S, which are taller than the control board C. The bottom 10C of the main body 10A of the control box 10 comprises a first bottom surface 10Ca and a second bottom surface 10Cb that is lower in height than the first bottom surface 10Ca. The control board C is located in a first area A1 defined by the first bottom surface 10Ca within the control box 10. The reactor R and the switching regulator S are located in a second area A2 defined by the second bottom surface 10Cb within the control box 10. In this configuration, the reactor R and the switching regulator S, which are taller, are located in the second area A2, which is taller (deeper) within the control box 10. This allows for efficient use of the space within the control box 10.

The above describes an embodiment of the present invention, but the present invention is not necessarily limited to the above-described embodiment, and various modifications are possible without departing from the spirit of the invention.

In the above embodiment, an example was described in which the control box 10 is fixed to the upper panel 2B by two fasteners 2F. However, the number of fasteners 2F may be one, or three or more.

In the above embodiment, an example was described in which the control box 10 accommodated the control board C, heat sink H, buzzer B, reactor R, and switching regulator S. However, the control box 10 may also accommodate other components.

<Other Modifications>
In the above embodiment and modified examples, the rack rail 23 is described as being integrally formed with the side panel 2A by extrusion processing, but the rack rail 23 may also be formed by attaching other components to the inner surface of the side panel 2A.

In the above embodiment and modified examples, a dishwasher 100 has been described as being configured such that rinsing water is supplied to the upper nozzle 3 and the lower nozzle 4 from a rinsing tank 6 built into the machine chamber 1A of the main body 1, but this is not limiting. For example, the present invention may be applied to a dishwasher configured such that rinsing water is supplied to the upper nozzle 3 and the lower nozzle 4 from a gas booster or electric booster that is provided outside the main body 1 of the dishwasher 100 and that heats water stored in the rinsing tank using a heating source such as gas or electricity.

The present invention may be implemented by appropriately combining the above embodiments and other modifications.

1B...washing chamber, 2...interior panel (housing), 2A...side panel (side), 2B...top panel (top panel), 2E...edge, 2F...fixing device, 5...washing pump, 10...control box, 10C...bottom, 10Ca...first bottom surface, 10Cb...second bottom surface, 10H...opening, 20...washing tank, 31, 41...washing injection holes, 100...dishwasher (washing machine), A1...first area, A2...second area, C...control board, D...dish (item to be washed), H...heat sink, R...reactor (component), S...switching regulator (component).

Claims (2)

A washing machine that washes objects housed in a washing chamber,
a housing forming the cleaning chamber;
a cleaning tank for storing cleaning water for cleaning the object to be cleaned;
a cleaning pump that sprays the cleaning water stored in the cleaning tank from a cleaning spray hole into the cleaning chamber;
a control box disposed on an upper portion of the housing and provided with a control board and a heat sink attached to the control board;
an opening is provided in the bottom of the control box to expose the heat sink to the outside of the control box;
the control board is disposed on the heat sink,
the heat sink is disposed between the housing and the control board,
the upper portion is inclined so that the edge is lower in height position in the vertical direction than the center of the upper portion,
At least a portion of the bottom of the control box is inclined along the slope of the upper portion,
The control box accommodates components that are taller than the control board,
The bottom portion includes a first bottom surface and a second bottom surface that is lower in height than the first bottom surface,
the control board is disposed in a first region defined by the first bottom surface within the control box;
The component is disposed in a second area defined by the second bottom surface within the control box . the housing has the top and a side connected to an edge of the top;
one or more fasteners for fastening the control box to the upper portion;
The cleaning machine of claim 1 , wherein the fixture is located near the edge of the upper portion.