Washing machine

Abstract

To provide a washer that can restrain washing water from leaking from a washing tank while restraining an increase in cost.SOLUTION: A tableware washer 100 comprises: a washing tank 20 for storing washing water; a washing water heater 25A arranged in the washing tank 20, attached to a side part 20B of the washing tank 20, and for heating the washing water; a washing water temperature sensor 25B for detecting the temperature of the washing water; and a bracket 25D supporting the washing water heater 25A, in contact with the washing temperature sensor 25B, and having a heat transfer property. The bracket 25D is attached to an inside surface of the washing tank 20.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a washing machine.

Background Art

[0002] Patent Document 1 discloses a washing machine including a washing tank for storing washing water for washing an object to be washed, a heating unit (heater) for heating the washing water, and a detection unit (temperature sensor) for detecting the temperature of the washing water. In this washing machine, the heating unit and the detection unit are connected by a connecting portion formed of a heat-conductive metal.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In a washing machine, in order to ensure the heating capacity of the washing water, the length dimension of the heating unit may be increased. In a configuration in which such a heating unit is installed in the washing tank, when a worker touches the heating unit during maintenance of the heating unit, the load applied to the attachment portion of the heating unit increases. Therefore, there is a risk of deformation or the like occurring in the attachment portion, and there is a risk of washing water leaking from there. Therefore, a configuration in which a dedicated attachment portion for supporting the heating unit is provided can be adopted, but providing a new attachment portion increases the cost.

[0005] Therefore, an object of the present invention is to provide a washing machine that can suppress leakage of washing water from the washing tank while suppressing an increase in cost.

Means for Solving the Problems

[0006] The washing machine according to the present invention is a washing machine that washes an object to be washed accommodated in a washing chamber, and includes a washing tank that stores washing water for washing the object to be washed, a heating unit that is disposed in the washing tank and attached to a side portion of the washing tank to heat the washing water, a detection unit that detects the temperature of the washing water, and a mounting unit that supports the heating unit and is in contact with the detection unit and has heat conductivity. The mounting unit is attached to the inner surface of the washing tank.

[0007] In the washing machine according to the present invention, the heating unit is supported by the mounting unit, and the mounting unit is attached to the inner surface of the washing tank. Thereby, when the heating unit is maintained, even if a load is applied to the heating unit, it is possible to suppress the entire load from being applied to the mounting portion of the heating unit. Therefore, it is possible to suppress the occurrence of deformation or the like in the mounting portion, and thus suppress the leakage of washing water therefrom. Further, the detection unit is in contact with the mounting unit having heat conductivity. Thereby, the detection unit can accurately detect the temperature of the heating unit. In this way, the mounting unit has two functions: a function of supporting the heating unit and a function of transmitting the heat of the heating unit to the detection unit. That is, the mounting unit has two functions with one component. Therefore, the heating unit can be supported without increasing the number of parts. Therefore, it is possible to suppress the leakage of washing water from the washing tank while suppressing an increase in cost.

[0008] The dishwasher according to the present invention forms a space extending in a first direction and a second direction orthogonal to the first direction when viewed from the vertical direction, and includes a washing tank disposed therein and a machine room disposed below the washing chamber. In the machine room, on one side in the first direction, a cover for opening the space to the outside of the machine room is provided. The heating unit has a first portion extending in the first direction and a second portion connected to the first portion and extending in the second direction. The second portion is attached to a side portion on one side in the first direction. The attachment portion may be attached to the inner surface on one side in the first direction. With this configuration, by removing the cover provided on one side in the first direction of the machine room to open the machine room, the work of the attachment portion of the heating unit to the washing tank can be performed. Further, the work of the attachment portion can be performed on one side of the washing tank. Therefore, the attachment and removal of the heating unit can be performed on one side of the machine room with the cover removed, and the work of the attachment portion can be performed on one side of the washing tank, so that the maintainability can be improved.

[0009] In the dishwasher according to the present invention, the washing tank extends with the first direction as the longitudinal direction, and the first portion may be disposed on one side in the second direction within the washing tank. With this configuration, the first portion of the heating unit extends in the longitudinal direction of the washing tank. Therefore, a heating capacity can be ensured in the heating unit. Further, since the first portion is disposed on one side in the second direction within the washing tank, even if a configuration in which the first portion extends in the first direction is adopted, the layout of other members in which the heating unit is disposed within the washing tank is not hindered.

Effects of the Invention

[0010] According to the present invention, it is possible to suppress leakage of washing water from the washing tank while suppressing an increase in cost.

Brief Description of the Drawings

[0011]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, a dishwasher (washing machine) 100 according to an embodiment will be described with reference to the drawings. In the description of the drawings, the same reference numerals are given to the same elements, and redundant descriptions are omitted. For convenience of explanation, in FIG. 1, the front-rear direction (first direction), the left-right direction (second direction), and the up-down direction are set respectively.

[0013] As shown in FIG. 1, the dishwasher 100 according to an embodiment is an under-counter type washing machine in which a door portion 15 is provided on the front surface of the washing chamber 1B. As shown in FIGS. 1 and 2, the dishwasher 100 includes a main body portion 1, a door portion 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 controller 10.

[0014] The main body 1 is formed including a frame (not shown), an exterior panel 11 made of stainless steel, and an interior panel 2. The exterior panel 11 has a pair of side panels 11A, 11A forming the sides in the left - right direction, an upper panel 11B, an upper front panel 11C, a lower front panel (cover) 11D, and a rear panel 11E. At least the lower front panel 11D is provided so as to be easily detachable from the frame. Legs 12 are attached to the four corners at the lower part of the main body 1. An operation unit 13 for operating various operations of the dishwasher 100 is provided on the upper front panel 11C.

[0015] The operation unit 13 is a part for performing input operations of the operation mode and various settings. The operation unit 13 of this embodiment is composed of a liquid crystal screen and a strengthened glass (electrostatic switch) covering it. An operator can perform various operations by touching the strengthened glass covering the liquid crystal screen. Note that the operation unit 13 may be composed of various buttons or a touch panel, or may be composed of a remote control, an operation terminal, etc. separate from the main body 1.

[0016] In the lower region of the main body 1, a machine room 1A is formed for accommodating 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. The machine room 1A forms a space extending in the front - rear direction and the left - right direction when viewed from the vertical direction. In the upper region of the main body 1, a washing chamber 1B for accommodating a rack on which tableware (objects to be washed) D etc. are set is formed. The washing chamber 1B is a space above the washing tank 20 and is composed of the interior panel 2. The interior panel 2 mainly has a pair of side panels 2A, 2A, an upper panel 2B, and a rear panel (not shown). Rack rails 23 for supporting the rack are formed on the inner surfaces of the pair of side panels 2A, 2A. An opening 1C is formed in the main body 1 for taking in and out the rack on which tableware D etc. are set into and from the washing chamber 1B. The rack rails 23 may be integrally formed with the side panels 2A, 2A by extrusion processing, or may be formed by attaching other members to the inner surfaces of the side panels 2A, 2A.

[0017] The door part 15 is disposed outside the opening 1C. The door part 15 is provided so as to be able to open and close the opening 1C. When the door part 15 is opened, the cleaning chamber 1B is opened to the outside of the main body part 1. The door part 15 is rotatably provided about an axis extending in the left-right direction at the lower end of the door part 15 as a rotation axis. An operator can open the cleaning chamber 1B by tilting forward a handle 15A provided at the upper end of the door part 15.

[0018] The cleaning tank 20 is provided below the cleaning chamber 1B. The cleaning tank 20 stores cleaning water used for cleaning tableware D and the like accommodated in the cleaning chamber 1B. The cleaning water is water sprayed into the cleaning chamber 1B in the cleaning process. The cleaning tank 20 partitions the machine chamber 1A and the cleaning chamber 1B, and is a water receiving part (not shown) that guides the water sprayed from the upper nozzle 3 and the lower nozzle 4 and dropped after cleaning or rinsing the tableware D to a water receiving storage part, and a storage part that stores the cleaning water supplied to the upper nozzle 3 and the lower nozzle 4 by the cleaning pump 5. In the present embodiment, the cleaning tank 20 means the storage part unless otherwise specified. The cleaning tank 20 extends in the longitudinal direction with the front-rear direction as the longitudinal direction. The cleaning tank 20 is provided with a cleaning water detection part 24, a cleaning water heater (heating part) 25A, and a cleaning water temperature sensor (detection part) 25B.

[0019] The cleaning water detection part 24 detects the water level of the cleaning water stored in the cleaning tank 20. The cleaning water detection part 24 is, for example, a switch that turns ON when the water level in the cleaning tank 20 exceeds a fixed water level H1 and turns OFF when it is below the fixed water level H1. The detection result by the cleaning water detection part 24 is acquired by the controller 10. The cleaning pump 5, which will be described in detail later, causes a so-called air bite and cannot spray the cleaning water from the upper nozzle 3 and the lower nozzle 4 when it sucks in air during operation. In one embodiment, the operation of the cleaning pump 5 is stopped when the cleaning water detection part 24 turns OFF during operation, thereby preventing the cleaning pump 5 from sucking in air.

[0020] The washing water heater 25A heats the washing water stored in the washing tank 20 in order to improve the sterilization ability and the washing ability. The washing water temperature sensor 25B detects the temperature of the washing water stored in the washing tank 20. The washing water temperature sensor 25B is, for example, a thermistor. The washing water temperature sensor 25B is attached to the side portion 20B (described later) of the washing tank 20. The detection result by the washing water temperature sensor 25B is acquired by the controller 10. The ON / OFF of the washing water heater 25A is controlled by the controller 10. For example, the washing water heater 25A is controlled by the controller 10 so as to maintain the washing water at a predetermined temperature based on the water temperature detected by the washing water temperature sensor 25B.

[0021] The washing tank 20 is composed of a bottom portion 20A and a side portion 20B. A circular through-hole 20b is formed in the bottom portion 20A of the washing tank 20. The through-hole 20b is a circular plate-like member in which a plurality of long holes penetrating in the thickness direction are formed, and is covered by a pump guard 26 that prevents the intrusion of foreign matter. The through-hole 20b is connected to the washing pump 5 via a connection portion 50. The connection portion 50 is formed with a first connection hole 50a connected to the through-hole 20b, a drain hole 50b connected to a drain pipe 28 that discharges water to the outside of the main body portion 1, and a second connection hole 50c connected to the washing pump 5. Note that the connection portion 50 may be integrally formed with the washing pump 5 as a part of the casing constituting the washing pump 5, or may be provided separately from the washing pump 5 as a member that connects the washing tank 20 and the washing pump 5.

[0022] The cleaning tank 20 is provided with an overflow pipe 27 extending in the vertical direction. The overflow pipe 27 allows water exceeding a predetermined water level in the cleaning tank 20 to flow in from its upper end and drain to the outside of the cleaning tank 20, defining the water level of the cleaning water stored in the cleaning tank 20. The lower end of the overflow pipe 27 is detachably inserted into a drain hole 50b formed in a connection portion 50 through a burring-processed pump guard 26 that covers a through hole 20b. The overflow pipe 27 can discharge the cleaning water stored in the cleaning tank 20 through the through hole 20b and the drain hole 50b by removing its lower end from the drain hole 50b.

[0023] The upper nozzle 3 is provided above the cleaning chamber 1B. The upper nozzle 3 is rotatably provided on an upper support portion 21A provided above the cleaning chamber 1B. The upper nozzle 3 has a main body portion 30 extending from a base end portion, which is the center of rotation of the rotation axis of the upper nozzle 3, to a tip end portion along the radial direction. The main body portion 30 is integrally formed with a cleaning injection hole 31 for injecting the cleaning water stored in the cleaning tank 20, a cleaning flow path 32 extending from the center of rotation to the cleaning injection hole 31 through which the cleaning water flows, a rinsing injection hole 33 for injecting the rinsing water stored in the rinsing tank 6, and a rinsing flow path 34 extending from the center of rotation to the rinsing injection hole 33 through which the rinsing water flows. The upper nozzle 3 rotates when the flow of the cleaning water generated in the cleaning flow path 32 or the flow of the rinsing water generated in the rinsing flow path 34 is converted into a rotational force. An upper cleaning pipe 58 for supplying cleaning water to the cleaning flow path 32 and an upper rinsing pipe 78 for supplying rinsing water to the rinsing flow path 34 are connected to the upper nozzle 3.

[0024] The lower nozzle 4 is provided below the cleaning chamber 1B. The lower nozzle 4 is rotatably provided on a lower support portion 21B provided below the cleaning chamber 1B. The lower nozzle 4 has a main body portion 40 that extends from a base end portion, which is the center of rotation of the rotation axis of the lower nozzle 4, along the radial direction to a tip end portion. The main body portion 40 is integrally formed with a cleaning injection hole 41 for injecting the 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 for injecting the 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 the cleaning water generated in the cleaning flow path 42 or the flow of the rinsing water generated in the rinsing flow path 44 is converted into a rotational force. A lower cleaning pipe 59 for supplying the cleaning water to the cleaning flow path 42 and a lower rinsing pipe 79 for supplying the rinsing water to the rinsing flow path 44 are connected to the lower nozzle 4.

[0025] The tableware D arranged in the dish rack is sprayed with the cleaning water by the upper nozzle 3 and the lower nozzle 4 in the cleaning process, and is sprayed with the rinsing water by the upper nozzle 3 and the lower nozzle 4 in the rinsing process.

[0026] The cleaning pump 5 is arranged in the machine room 1A. The cleaning pump 5 sends out the cleaning water stored in the cleaning tank 20 to the cleaning chamber 1B that houses the tableware D and the like. The cleaning pump 5 takes in the cleaning water of the cleaning tank 20 through the connection portion 50 and sends out the cleaning water to the upper nozzle 3 and the lower nozzle 4. An upper cleaning pipe 58 is connected to the first discharge port of the cleaning pump 5. The upper cleaning pipe 58 is connected to the upper nozzle 3. A lower cleaning pipe 59 is connected to the second discharge port of the cleaning pump 5. The lower cleaning pipe 59 is connected to the lower nozzle 4.

[0027] The rinsing tank 6 is arranged in the machine room 1A. The rinsing tank 6 stores rinsing water used for rinsing tableware D and the like. The rinsing water is the water sprayed into the cleaning room 1B in 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 on the downstream side of the strainer 60A in the water supply pipe 60.

[0028] The rinsing tank 6 is provided with a rinsing water detection unit 62, an overflow unit 63, a rinsing water heater 64A, and a rinsing water temperature sensor 64B.

[0029] The rinsing water detection unit 62 is a switch that detects that the water stored in the rinsing tank 6 is at a fixed water level H2. The detection result of the rinsing water detection unit 62 is acquired by the controller 10. The valve 60B is controlled by the controller 10. For example, the controller 10 opens and closes the valve in conjunction with the detection of the fixed water level H2 by the rinsing water detection unit 62, and controls the valve 60B so as to keep the water level of the rinsing water stored in the rinsing tank 6 constant.

[0030] The overflow unit 63 discharges the water that exceeds the full water level in the rinsing tank 6. The rinsing tank 6 is a closed-type tank. For example, when the valve 60B has an abnormal closing, the water level exceeds the full water level. The rinsing water heater 64A heats the rinsing water stored in the rinsing tank 6 in order to improve the sterilization ability and the rinsing ability. The rinsing water temperature sensor 64B detects the temperature of the rinsing water. The detection result by the rinsing water temperature sensor 64B is acquired by the controller 10. The ON / OFF of the rinsing water heater 64A is controlled by the controller 10. For example, the rinsing water heater 64A is controlled by the controller 10 so as to maintain the rinsing water at a predetermined temperature based on the water temperature detected by the rinsing water temperature sensor 64B.

[0031] The rinsing pump 7 sends out the rinsing water stored in the rinsing tank 6 to the washing chamber 1B that houses tableware D and the like. The rinsing pump 7 takes in the rinsing water in the rinsing tank 6 and sends out the rinsing water to the upper nozzle 3 and the lower nozzle 4. An upper rinsing pipe 78 and a lower rinsing pipe 79 are connected to the discharge port of the rinsing pump 7 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.

[0032] The detergent supply pump 8 is arranged in the machine room 1A. The detergent supply pump 8 supplies the detergent stored in the detergent tank 8A to the washing chamber 1B via a pipe 8B. The detergent discharged into the washing chamber 1B flows into the washing tank 20 and mixes with the washing water. The rinse agent supply pump 9 is arranged in the machine room 1A. The rinse agent supply pump 9 supplies the rinse agent stored in the rinse agent tank 9A to the rinsing pipe 77 via a pipe 9B. The rinse agent supplied to the rinsing pipe 77 mixes with the rinsing water and is supplied to the washing chamber 1B via the upper nozzle 3 and the lower nozzle 4.

[0033] The controller 10 is arranged between the upper panel 11B in the main body 1 and the upper panel 2B that constitutes the washing chamber 1B. The controller 10 controls the overall operation of the dishwasher 100. The controller 10 is a computer system or a processor implemented on an integrated circuit. The controller 10 is composed of a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), an input / output interface, and the like. Various programs or data are stored in the ROM.

[0034] Next, the mounting structure of the washing water heater 25A will be described. As shown in FIG. 3, the washing water heater 25A is disposed on the right side in the left-right direction within the washing tank 20. The washing water heater 25A has a first portion 25Aa that extends in the front-rear direction of the washing tank 20, and a second portion 25Ab that is connected to the first portion 25Aa and extends in the left-right direction of the washing tank 20. The first portion 25Aa is longer than half of the total length of the washing tank 20 in the front-rear direction and extends linearly. The first portion 25Aa and the second portion 25Ab have a cylindrical shape.

[0035] The second portion 25Ab is connected to the front end of the first portion 25Aa. That is, the second portion 25Ab is located on the front side in the front-rear direction. A part of the second portion 25Ab (the end connected to the first portion 25Aa) is curved. The second portion 25Ab is attached to the side portion 20B of the washing tank 20. Specifically, the second portion 25Ab is attached to the front side of the right side portion 20B of the washing tank 20. As shown in FIG. 4, the second portion 25Ab is attached to the side portion 20B of the washing tank 20 by a mounting structure 25C. The end of the second portion 25Ab (the end opposite to the end connected to the first portion 25Aa) protrudes from the outer surface of the side portion 20B of the washing tank 20 and is located outside the washing tank 20.

[0036] As shown in FIGS. 5(a) and 5(b), the mounting structure 25C has a flange 25Ca, a threaded portion 25Cb, a seal 25Cc, and a nut 25Cd. The flange 25Ca is provided at the proximal end side of the second portion 25Ab. The flange 25Ca projects outward in the radial direction of the second portion 25Ab. The flange 25Ca is disposed within the cleaning tank 20. The threaded portion 25Cb is provided at the end of the second portion 25Ab (the end opposite to the end connected to the first portion 25Aa). Inside the threaded portion 25Cb, a connection portion (not shown) connected to the wiring C is provided. The seal 25Cc is disposed between the flange 25Ca and the side portion 20B of the cleaning tank 20. The seal 25Cc is, for example, a rubber packing. The nut 25Cd is screwed onto the threaded portion 25Cb to fix the cleaning water heater 25A to the side portion 20B.

[0037] When attaching the cleaning water heater 25A to the cleaning tank 20, the threaded portion 25Cb of the mounting structure 25C is passed through the mounting hole 20Ba in the side portion 20B, and the nut 25Cd is attached from the outside of the cleaning tank 20. Thereby, the cleaning water heater 25A is fixed to the side portion 20B of the cleaning tank 20. Thereafter, the wiring C is connected to the connection portion of the cleaning water heater 25A. When removing the cleaning water heater 25A from the side portion 20B of the cleaning tank 20, the wiring C is removed and the nut 25Cd of the mounting structure 25C is removed. Thereby, the fixing of the cleaning water heater 25A to the side portion 20B is released.

[0038] As shown in FIG. 4, the cleaning water heater 25A is supported by a bracket (mounting portion) 25D. The bracket 25D is attached to the inner surface of the side portion 20B of the cleaning tank 20. The bracket 25D has heat conductivity. The bracket 25D is formed of, for example, metal.

[0039] Bracket 25D has a first member 25E and a second member 25F. As shown in FIGS. 6(a), 6(b), and 6(c), the first member 25E has a fixing portion 25Ea, a first contact portion 25Eb, and a first holding portion 25Ec. The fixing portion 25Ea, the first contact portion 25Eb, and the first holding portion 25Ec are integrally formed of metal.

[0040] The fixing portion 25Ea is a portion for fixing the bracket 25D to the side portion 20B of the cleaning tank 20. The fixing portion 25Ea is fixed to the inner surface of the side portion 20B of the cleaning tank 20. The fixing portion 25Ea is fixed (joined) to the side portion 20B, for example, by welding.

[0041] The first contact portion 25Eb is a portion that contacts the cleaning water temperature sensor 25B. The first contact portion 25Eb is connected to the lower end of the fixing portion 25Ea and extends at a substantially right angle to the fixing portion 25Ea. A first groove portion 25Ed is provided in the first contact portion 25Eb. The first groove portion 25Ed is provided convex downward and has a semi-circular arc shape in cross section. The first groove portion 25Ed supports the cleaning water temperature sensor 25B from below. The first groove portion 25Ed clamps the cleaning water temperature sensor 25B together with the second groove portion 25Fc (described later) of the second member 25F. First screw holes 25Ee, 25Ef are provided in the first contact portion 25Eb. A screw N is screwed into the first screw holes 25Ee, 25Ef.

[0042] The first holding portion 25Ec is a portion for holding the cleaning water heater 25A. The first holding portion 25Ec extends downward from the end of the first contact portion 25Eb. A part of the first holding portion 25Ec has a shape corresponding to the outer shape of the first portion 25Aa of the cleaning water heater 25A. A part of the first holding portion 25Ec has a curved shape. The first holding portion 25Ec supports the front end portion of the first portion 25Aa. The first holding portion 25Ec supports the cleaning water heater 25A from below. The first holding portion 25Ec clamps the cleaning water heater 25A together with the second holding portion 25Fb (described later) of the second member 25F.

[0043] As shown in FIGS. 7(a), 7(b), and 7(c), the second member 25F has a second contact portion 25Fa and a second holding portion 25Fb. The second contact portion 25Fa and the second holding portion 25Fb are integrally formed of metal.

[0044] The second contact portion 25Fa is the portion that contacts the washing water temperature sensor 25B. The second contact portion 25Fa is disposed on the first contact portion 25Eb. A second groove portion 25Fc is provided in the second contact portion 25Fa. The second groove portion 25Fc is provided in a convex shape on the upper side and has a semi-circular arc shape in cross section. The second groove portion 25Fc covers the washing water temperature sensor 25B from above. The second groove portion 25Fc sandwiches the washing water temperature sensor 25B together with the first groove portion 25Ed of the first member 25E. Second screw holes 25Fd and 25Fe are provided in the second contact portion 25Fa. A screw N is screwed into the second screw holes 25Fd and 25Fe.

[0045] The second holding portion 25Fb is the portion that holds the washing water heater 25A. The second holding portion 25Fb extends from the end of the second contact portion 25Fa. A part of the second holding portion 25fb has a shape corresponding to the outer shape of the first portion 25Aa of the washing water heater 25A. A part of the second holding portion 25Fb has a curved shape. The second holding portion 25Fb covers the washing water heater 25A from above. The second holding portion 25Fb sandwiches the washing water heater 25A together with the first holding portion 25Ec of the first member 25E.

[0046] In bracket 25D, the first member 25E and the second member 25F are fixed by a screw N. The screw N is screwed into the first screw hole 25Ee of the first member 25E and the second screw hole 25Fd of the second member 25F, and is also screwed into the first screw hole 25Ef of the first member 25E and the second screw hole 25Fe of the second member 25F. In bracket 25D, the first groove portion 25Ed of the first contact portion 25Eb of the first member 25E and the second groove portion 25Fc of the second contact portion 25Fa of the second member 25F are arranged to face each other, and the cleaning water temperature sensor 25B is sandwiched so as to surround it by the first groove portion 25Ed and the second groove portion 25Fc. In the cleaning water temperature sensor 25B, the sensor is inserted into a cylindrical housing made of metal, and the housing is in contact with the first contact portion 25Eb and the second contact portion 25Fa. The tip of the cleaning water temperature sensor 25B is located above the first holding portion 25Ec and the second holding portion 25Fb (the first portion 25Aa of the cleaning water heater 25A). In bracket 25D, the cleaning water heater 25A is sandwiched by the first holding portion 25Ec of the first member 25E and the second holding portion 25Fb of the second member 25F. In bracket 25D, the heat of the cleaning water heater 25A is transmitted to the cleaning water temperature sensor 25B through the first holding portion 25Ec, the second holding portion 25Fb, the first contact portion 25Eb, the second contact portion 25Fa, the first groove portion 25Ed, and the second groove portion 25Fc.

[0047] Next, the operation and effect of the dishwasher 100 of the present embodiment will be described. In the dishwasher 100 of the above embodiment, the washing water heater 25A is supported by the bracket 25D, and the bracket 25D is attached to the inner surface of the washing tank 20. Thereby, even if a load is applied to the washing water heater 25A during maintenance of the washing water heater 25A, it is possible to suppress the entire load from being applied to the attachment structure 25C of the washing water heater 25A. Therefore, it is possible to suppress deformation or the like from occurring in the attachment portion, and thus it is possible to suppress leakage of washing water therefrom. Further, the washing water temperature sensor 25B is in contact with the bracket 25D having heat conductivity. Thereby, the washing water temperature sensor 25B can accurately detect the temperature of the washing water heater 25A. As described above, the bracket 25D has two functions: a function of supporting the washing water heater 25A and a function of transmitting the heat of the washing water heater 25A to the washing water temperature sensor 25B. That is, the bracket 25D has two functions with one component. Therefore, the washing water heater 25A can be supported without increasing the number of parts. Therefore, it is possible to suppress leakage of washing water from the washing tank 20 while suppressing an increase in cost.

[0048] The dishwasher 100 according to the present embodiment forms a space extending in the front-rear direction and the left-right direction when viewed from the vertical direction, includes a washing tank 20 disposed therein, and a machine room 1A disposed below the washing chamber 1B. In the machine room 1A, a lower front panel 11D that opens the space to the outside of the machine room 1A is provided on the front side in the front-rear direction. The washing water heater 25A has a first portion 25Aa extending in the front-rear direction and a second portion 25Ab connected to the first portion 25Aa and extending in the left-right direction. The second portion 25Ab is attached to the front side portion 20B in the front-rear direction. The bracket 25D is attached to the inner surface of the side portion 20B on the front side in the front-rear direction. In this configuration, by removing the lower front panel 11D provided on the front side in the front-rear direction of the machine room 1A to open the machine room 1A, the work of the mounting structure 25C (nut 25Cd) in the washing water heater 25A can be performed. Further, by opening the door portion 15, the work of the bracket 25D can be performed in front of the washing tank 20 through the opening 1C. Therefore, the attachment and detachment of the washing water heater 25A can be performed on the front side of the machine room 1A with the lower front panel 11D removed and on the front side of the washing tank 20, and the work of the mounting structure 25C can be performed on the front side of the washing tank 20, so that the maintainability can be improved.

[0049] In the dishwasher 100 according to the present embodiment, the washing tank 20 extends with the front-rear direction as the longitudinal direction. The first portion 25Aa of the washing water heater 25A is disposed on the right side (one side) in the left-right direction within the washing tank 20. In this configuration, the first portion 25Aa of the washing water heater 25A extends in the longitudinal direction of the washing tank 20. Therefore, the heating capacity can be ensured in the washing water heater 25A. Further, since the first portion 25Aa of the washing water heater 25A is disposed on the right side in the left-right direction within the washing tank 20, even if the configuration in which the first portion 25Aa extends in the front-rear direction is adopted, the layout of other members (overflow pipe 27, food residue filter, etc.) disposed within the washing tank 20 by the washing water heater 25A is not hindered.

[0050] As described above, the embodiments of the present invention have been explained. However, the present invention is not necessarily limited to the above-described embodiments, and various modifications are possible without departing from the gist thereof.

[0051] In the above embodiment, the form in which one washing water heater 25A is provided has been described as an example. However, a plurality of washing water heaters 25A may be provided. In the case of this configuration, the bracket 25D supports the plurality of washing water heaters 25A.

[0052] In the above embodiment, the form in which the washing water heater 25A is arranged on the right side of the washing tank 20 has been described as an example. However, the washing water heater 25A may be arranged on the left side of the washing tank 20. In the case of this configuration, the bracket 25D is attached to the inner surface of the side portion 20B on the left side of the washing tank 20.

[0053] In the above embodiment, the form in which the washing water temperature sensor 25B is sandwiched by the bracket 25D has been described as an example. However, the washing water temperature sensor 25B only needs to be in contact with at least the bracket 25D, and the heat of the washing water heater 25A is transferred through the bracket 25D.

[0054] <Other Modification Examples> In the above embodiment and modification examples, the example in which the rack rail 23 is integrally formed with the side panel 2A by extrusion processing has been described. However, the rack rail 23 may be formed by attaching other members to the inner surface of the side panel 2A.

[0055] The above embodiment and modification examples are applicable not only to the dishwasher 100 of the type in which the door portion 15 is provided on the front side of the main body portion 1, but also to, for example, dishwashers of the type in which the door portion opens and closes vertically.

[0056] In the above-described embodiments and modified examples, the dishwasher 100 having a configuration in which rinsing water is supplied from the rinsing tank 6 built in the machine room 1A of the main body 1 to the upper nozzle 3 and the lower nozzle 4 has been described as an example, but the present invention is not limited thereto. For example, it may be applied to a dishwasher having a configuration in which the rinsing water is supplied from a gas booster or an electric booster provided outside the main body 1 of the dishwasher 100 and in which the water stored in the rinsing tank is heated by a heat source such as gas or electricity to the upper nozzle 3 and the lower nozzle 4.

[0057] The present invention may appropriately combine the above-described embodiments and other modified examples.

Description of Reference Numerals

[0058] 1A... Machine room, 1B... Washing room, 11D... Lower front panel (cover), 20... Washing tank, 20B... Side part, 25A... Washing water heater (heating part), 25Aa... First part, 25Ab... Second part, 25B... Washing water temperature sensor (detection part), 25D... Bracket (attachment part), 100... Dishwasher (washing machine).

Claims

1. A washing machine for washing an object to be washed accommodated in a washing chamber, comprising: a washing tank for storing washing water for washing the object to be washed; a heating unit disposed in the washing tank and attached to a side portion of the washing tank for heating the washing water; a detection unit for detecting the temperature of the washing water; a mounting unit that supports the heating unit and is in contact with the detection unit and has heat conductivity; a machine room that forms a space extending in a first direction and a second direction orthogonal to the first direction when viewed from the vertical direction, in which the washing tank is disposed and which is disposed below the washing chamber; a cover for opening the space to the outside of the machine room is provided on one side in the first direction in the machine room; the heating unit has a first portion extending in the first direction and a second portion connected to the first portion and extending in the second direction; the second portion is attached to the side portion on the one side in the first direction; the mounting unit is attached to the inner surface of the washing tank on the one side in the first direction. A washing machine.

2. the washing tank extends with the first direction as the longitudinal direction; the first portion is disposed on one side in the second direction within the washing tank. The washing machine according to claim 1.

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