Dishwasher

Abstract

This application provides a dishwasher, belonging to the field of dishwasher technology, and aims to solve the technical problem of high energy consumption in related dishwashers. The dishwasher includes a cabinet, an inner tub, spray arms, a delivery pump, a heating device, and a heat exchange device. By surrounding at least a portion of the delivery pump with a heat exchange device, the heat generated during the delivery pump's operation is utilized. Washing water enters the heat exchange chamber through a second inlet, and after indirect heat exchange with the delivery pump through the wall of the heat exchange box, it flows from a second outlet into the first inlet of the delivery pump, and then flows to the spray arms to clean the tableware and kitchen utensils in the washing chamber. The heat exchange device utilizes the heat emitted by the delivery pump to heat the washing water, reducing the energy consumption of the heating device and thus reducing the overall energy consumption of the dishwasher.

Description

Technical Field

[0001] This application relates to the field of dishwasher technology, and more particularly to a dishwasher. Background Technology

[0002] A dishwasher is a household appliance used to automatically clean dishes, cookware, and tableware. It removes dirt and food residue from dishes by spraying high-pressure water through spray arms.

[0003] In related technologies, dishwashers include a washing heat pump that heats water and delivers the heated water to the spray arm, from which it is sprayed out to clean tableware and kitchen utensils. Hot water has a strong ability to remove grease, thus improving the cleaning effect.

[0004] However, these dishwashers have the problem of high energy consumption. Summary of the Invention

[0005] This application provides a dishwasher that can solve the technical problem of high energy consumption in related dishwashers.

[0006] This application provides a dishwasher, including:

[0007] The box-shaped structure has a cavity for receiving contents;

[0008] The inner liner is located within the receiving cavity, and a washing chamber is formed within the inner liner;

[0009] The spray arm is located inside the washing chamber and is rotatably mounted on the inner tank;

[0010] The delivery pump, housed within the casing, is used to deliver washing water to the spray arms; the delivery pump has:

[0011] The first liquid inlet is used to supply washing water into the transfer pump;

[0012] The first liquid outlet is used to communicate with the inner cavity of the spray arm;

[0013] A heating device is used to heat the washing water flowing towards the delivery pump;

[0014] The heat exchange device includes:

[0015] A heat exchange box, which surrounds at least a portion of the transfer pump, has the following features:

[0016] Heat exchange chamber;

[0017] The second liquid inlet is connected to the heat exchange chamber and is used to supply washing water into the heat exchange chamber.

[0018] The second liquid outlet is connected to the heat exchange chamber and is used to connect to the first liquid inlet.

[0019] The dishwasher of this application embodiment utilizes the heat generated during the operation of the delivery pump by surrounding at least a portion of the delivery pump with a heat exchange device. Washing water enters the heat exchange chamber through the second inlet, and after indirect heat exchange with the delivery pump through the wall of the heat exchange box, it flows from the second outlet into the first inlet of the delivery pump, and then flows to the spray arm to clean the tableware and kitchen utensils in the washing chamber. The heat exchange device uses the heat emitted by the delivery pump to heat the washing water, reducing the energy consumption of the heating device, and thus reducing the energy consumption of the dishwasher.

[0020] In some embodiments of this application, the delivery pump includes:

[0021] The pump casing is constructed to form a fluid cavity, a first inlet and a first outlet, both of which are connected to the fluid cavity.

[0022] The impeller is located inside the fluid cavity;

[0023] The drive unit is connected to the pump casing and is connected to the impeller drive to drive the impeller to rotate;

[0024] The heat exchange box is enclosed on at least part of the exterior of the drive unit.

[0025] With this configuration, the drive unit of the transfer pump generates heat during operation and dissipates that heat to the outside. The heat exchange box is positioned outside the drive unit so that the water inside the heat exchange chamber can exchange heat with the drive unit, thereby utilizing the heat dissipated by the drive unit.

[0026] In some embodiments of this application, the heat exchange box includes:

[0027] The box body is constructed with a heat exchange chamber, a second liquid inlet, and a second liquid outlet;

[0028] A retaining ring is connected to the housing and is fitted around the outside of the delivery pump.

[0029] With this configuration, the retaining ring can be fitted onto the outside of the transfer pump, simplifying the connection between the heat exchange box and the transfer pump.

[0030] In some embodiments of this application, the housing includes:

[0031] The main heat exchange section is connected to the fixed ring, and the main heat exchange section has a first liquid storage chamber.

[0032] An auxiliary heat exchange section is located on one side of the main heat exchange section along the axial direction of the fixed ring. The auxiliary heat exchange section has a second liquid storage chamber, which is connected to the first liquid storage chamber.

[0033] With this configuration, the auxiliary heat exchange section can increase the heat exchange area between the washing water in the heat exchange chamber and the delivery pump or drive device, thereby improving the heat exchange efficiency of the heat exchange device and the delivery pump.

[0034] In some embodiments of this application, the heat exchange device further includes a control valve, which is disposed in the heat exchange box and is used to control the opening or closing of the second liquid outlet.

[0035] With this configuration, when it is necessary to deliver the washing water from the heat exchange chamber to the spray arm, the control valve opens the second outlet, allowing the washing water in the heat exchange chamber to flow from the second outlet to the delivery pump, and then to the spray arm. When it is not necessary to deliver the washing water from the heat exchange chamber to the spray arm, the control valve closes the second outlet.

[0036] In some embodiments of this application, the heating device includes:

[0037] The tube has one end for allowing washing water to enter its inner cavity, and the other end is connected to the first liquid inlet.

[0038] A heating element is installed on the pipe wall to heat the water inside the pipe.

[0039] In this configuration, the heating element heats the water inside the tube. The higher the water temperature, the stronger its ability to dissolve grease and the better its cleaning power. Heating the washing water and then delivering it to the spray arm improves the cleaning effect on tableware and kitchen utensils.

[0040] In some embodiments of this application, the second outlet is connected to the inner cavity of the tube.

[0041] With this setup, the water in the heat exchange chamber can be further heated before flowing to the delivery pump, so that the water temperature from the heat exchange chamber reaches the set washing water temperature before being delivered to the spray arm.

[0042] In some embodiments of this application, the dishwasher further includes a water softener, which has a water softening chamber, and the water softener is configured as follows:

[0043] The third liquid inlet is connected to the soft water chamber and is used to supply washing water into the soft water chamber.

[0044] The third outlet is connected to the soft water chamber and is used to connect to the first inlet.

[0045] With this setup, the wash water first flows into the softening chamber, where the softening salt removes hardness ions such as calcium and magnesium ions, thus converting hard water into soft water and reducing limescale buildup inside the dishwasher. The softened water then flows from the first inlet to the delivery pump, further reducing limescale buildup in the delivery pump, spray arms, and other components.

[0046] In some embodiments of this application, the third outlet is also used to communicate with the second inlet.

[0047] With this setup, the softened water flows from the second inlet into the heat exchange box, which can reduce the formation of scale inside the heat exchange box.

[0048] In some embodiments of this application, the dishwasher further includes a water tank disposed at the bottom of the inner tub, the water tank having a cavity with a top opening, the cavity communicating with the washing chamber, and the cavity also communicating with a first liquid inlet.

[0049] With this configuration, the water sprayed from the spray arm into the washing chamber flows downward into the water tank cavity, then flows from the tank cavity to the first inlet of the delivery pump, and flows back to the spray arm, thus reusing the water and reducing the dishwasher's water consumption. Attached Figure Description

[0050] To more clearly illustrate the implementation methods in the embodiments of this application or related technologies, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings.

[0051] Figure 1 This is a schematic diagram of the structure of a dishwasher according to an embodiment of this application;

[0052] Figure 2 This is a partial structural diagram of a dishwasher according to an embodiment of this application. Figure 1 ;

[0053] Figure 3 This is a partial structural diagram of a dishwasher according to an embodiment of this application. Figure 2 ;

[0054] Figure 4 This is a partial structural diagram of a dishwasher according to an embodiment of this application. Figure 3 ;

[0055] Figure 5 This is a partial structural diagram of a dishwasher according to an embodiment of this application. Figure 4 ;

[0056] Figure 6 This is a schematic diagram of the structure of the heat exchange box and the delivery pump in the dishwasher of this application embodiment. Figure 1 ;

[0057] Figure 7 for Figure 6 Sectional view along the middle AA direction;

[0058] Figure 8 This is a schematic diagram of the heat exchange box in a dishwasher according to an embodiment of this application;

[0059] Figure 9 for Figure 8 A partial diagram of the exploded structure;

[0060] Figure 10This is a schematic diagram of the structure of the heat exchange box and the delivery pump in the dishwasher of this application embodiment. Figure 2 ;

[0061] Figure 11 for Figure 10 Cross-sectional view of the center cover along the BB direction;

[0062] Figure 12 for Figure 8 A cross-sectional view along the CC direction.

[0063] Explanation of reference numerals in the attached figures:

[0064] 10-Box;

[0065] 110 - Shell; 120 - Inner liner;

[0066] 121-Washing chamber; 122-Operating port;

[0067] 20-Gate body;

[0068] 30 - Transfer pump;

[0069] 310 - Pump casing; 311 - First liquid inlet;

[0070] 312 - First liquid outlet; 320 - Drive unit;

[0071] 40 - Heat exchanger;

[0072] 410 - Heat exchange box; 411 - Heat exchange chamber;

[0073] 412 - Box body; 413 - Main heat exchange section;

[0074] 414 - First liquid storage chamber; 415 - Auxiliary heat exchange section;

[0075] 416 - Second liquid storage chamber; 417 - Second liquid inlet;

[0076] 418 - Second liquid outlet; 419 - Fixing ring;

[0077] 4191 - Recessed channel; 420 - Control valve;

[0078] 430 - First fastener; 431 - First fixing hole;

[0079] 440 - Second fastener; 441 - Second fixing hole;

[0080] 450 - Inlet pipe; 460 - Outlet pipe;

[0081] 470 - Three-way valve;

[0082] 50 - Heating device;

[0083] 510-tube body;

[0084] 60-Water softener;

[0085] 610 - Third liquid inlet; 620 - Third liquid outlet;

[0086] 70-sink;

[0087] 710-groove cavity. Detailed Implementation

[0088] To make the objectives, implementation methods and advantages of this application clearer, the exemplary implementation methods of this application will be clearly and completely described below with reference to the accompanying drawings of the exemplary embodiments of this application. Obviously, the described exemplary embodiments are only some embodiments of this application, and not all embodiments.

[0089] It should be noted that the brief descriptions of terms in this application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise stated, these terms should be understood in their ordinary and common meaning.

[0090] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover but not exclusively include, for example, a product or device that includes a series of components is not necessarily limited to those that are explicitly listed, but may include other components that are not explicitly listed or that are inherent to such product or device.

[0091] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0092] The terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0093] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0094] To address the high energy consumption problem of dishwashers in related technologies, this application provides a dishwasher that utilizes the heat generated during the operation of the delivery pump by surrounding at least a portion of the delivery pump with a heat exchange device. Washing water enters the heat exchange chamber through a second inlet, and after indirect heat exchange with the delivery pump through the wall of the heat exchange box, it flows from the second outlet into the first inlet of the delivery pump, and then flows to the spray arm to clean the tableware and kitchen utensils in the washing chamber. The heat exchange device uses the heat emitted by the delivery pump to heat the washing water, reducing the energy consumption of the heating device, thereby reducing the energy consumption of the dishwasher.

[0095] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0096] refer to Figure 1 The dishwasher of this application embodiment includes a cabinet 10 and a door 20.

[0097] A washing chamber 121 is formed inside the cabinet 10. The front side of the washing chamber 121 has an operating opening 122, through which tableware or cookware can be placed into or removed from the washing chamber 121. The front side of the washing chamber 121 refers to the side of the washing chamber 121 facing the user during normal use of the dishwasher.

[0098] The door 20 is rotatably connected to the housing 10, and the door 20 is used to open or close the operating port 122.

[0099] In some possible implementations of the embodiments of this application, reference is made to Figure 1 and Figure 2 The box body 10 may include a box shell 110 and an inner liner 120. The box shell 110 may have a receiving cavity, and the inner liner 120 may be disposed in the receiving cavity. The inner liner 120 has a washing chamber 121.

[0100] In some possible implementations of this application, the dishwasher may further include a dish rack disposed within the washing chamber 121, used for placing tableware or cookware. The dish rack is slidably disposed within the inner liner 120, with the sliding direction of the dish rack along the depth direction of the inner liner 120. When it is necessary to place tableware or cookware in the dish rack, the dish rack can be pulled out from the washing chamber 121 to facilitate the placement of the cookware or tableware. After placement, the dish rack is then pushed back into the washing chamber 121.

[0101] In some possible implementations of this application, the dishwasher may further include a spray arm, which may be disposed within the inner tub 120 and rotatably disposed at the bottom of the inner tub 120. The spray arm may have multiple spray nozzles for spraying water toward the washing chamber 121 to clean and rinse stains on tableware or kitchen utensils.

[0102] In some possible implementations of the embodiments of this application, reference is made to Figure 3 and Figure 4 The dishwasher may also include a delivery pump 30, which may be disposed within the receiving cavity and may be located outside the inner tub 120. For example, see reference... Figure 3 and Figure 4 The delivery pump 30 can be located at the bottom of the inner liner 120.

[0103] refer to Figure 5 The transfer pump 30 may have a first inlet 311. The first inlet 311 is connected to the inner cavity of the transfer pump 30. The first inlet 311 is used to supply washing water into the transfer pump 30. The first inlet 311 may be directly or indirectly connected to the washing water.

[0104] refer to Figure 5 The delivery pump 30 may have a first liquid outlet 312, which may be connected to the inner cavity of the spray arm.

[0105] When the delivery pump 30 is turned on, the washing water flows into the inner cavity of the delivery pump 30 from the first inlet 311, then flows into the inner cavity of the spray arm from the first outlet 312, and is sprayed out from the spray nozzle into the washing chamber 121 to clean the tableware or kitchen utensils in the washing chamber 121.

[0106] In some possible implementations of the embodiments of this application, reference is made to Figure 4 The pump 30 may include a pump housing 310, and a fluid cavity may be formed inside the pump housing 310. A first inlet 311 and a first outlet 312 may be formed on the pump housing 310, and both the first inlet 311 and the first outlet 312 are in communication with the fluid cavity.

[0107] The transfer pump 30 may also include an impeller, which may be disposed in the fluid chamber and is rotatably connected to the pump casing 310.

[0108] refer to Figure 4 The delivery pump 30 may also include a drive unit 320, which is connected to the pump housing 310. The drive unit 320 is connected to the impeller drive and drives the impeller to rotate so that the washing water flows into the fluid chamber from the first inlet 311 and flows to the spray arm from the first outlet 312.

[0109] The drive unit 320 can be a drive motor, which may include a motor body and a motor shaft. The motor body is connected to the pump housing 310. The motor body is driven by the motor shaft and drives the motor shaft to rotate around its axis. The motor shaft may be connected to an impeller and drive the impeller to rotate, thereby agitating the fluid in the fluid chamber to flow from the first inlet 311 to the first outlet 312.

[0110] In some possible implementations of the embodiments of this application, reference is made to Figure 3 The dishwasher may also include a heating element 50 for heating the washing water flowing to the delivery pump 30.

[0111] In some possible implementations of the embodiments of this application, reference is made to Figure 3 , Figure 4 and Figure 5 The heating device 50 may include a tube 510. One end of the tube 510 is used to allow washing water to enter the inner cavity of the tube 510, and the other end of the tube 510 may be connected to the first liquid inlet 311. The washing water can flow from one end of the tube 510 to the other end, and from the other end to the first liquid inlet 311 of the delivery pump 30, and is delivered to the spray arm by the delivery pump 30.

[0112] The heating device 50 may further include a heating element, which can be a heating wire or a heating plate. The heating element can be disposed inside the tube 510 and connected to the tube wall of the tube 510. The heating element is used to heat the water inside the tube 510. The higher the water temperature, the stronger its ability to dissolve oil stains and the higher its cleaning power. Heating the washing water and then delivering it to the spray arm can improve the cleaning effect on tableware and kitchen utensils.

[0113] In some possible implementations of the embodiments of this application, reference is made to Figure 3 and Figure 4 The dishwasher may also include a heat exchange device 40. The heat exchange device 40 is disposed at least partially outside the delivery pump 30 to utilize the heat dissipated by the delivery pump 30.

[0114] In some possible implementations of the embodiments of this application, reference is made to Figures 4-7 The heat exchange device 40 may include a heat exchange box 410. The heat exchange box 410 surrounds at least a portion of the exterior of the delivery pump 30. The heat exchange box 410 may have a heat exchange chamber 411 for holding washing water.

[0115] refer to Figure 6 and Figure 7 The heat exchange box 410 may be configured with a second liquid inlet 417, which is connected to the heat exchange chamber 411. The second liquid inlet 417 is used to supply washing water into the heat exchange chamber 411. The second liquid inlet 417 may be directly or indirectly connected to the washing water. The washing water flows into the heat exchange chamber 411 from the second liquid inlet 417. Since the heat exchange box 410 is surrounded by the delivery pump 30, the heat dissipated by the delivery pump 30 exchanges heat with the washing water in the heat exchange chamber 411 through the box wall of the heat exchange box 410, thereby raising the temperature of the washing water.

[0116] refer to Figure 6 and Figure 7 The heat exchange box 410 may also be configured with a second liquid outlet 418, which is connected to the heat exchange chamber 411 and is also used to connect to the first liquid inlet 311. In this way, the washing water in the heat exchange chamber 411, whose temperature has increased after heat exchange, flows from the second liquid outlet 418 to the first liquid inlet 311 of the delivery pump 30, and is then delivered by the delivery pump 30 to the spray arm to rinse the tableware and kitchen utensils in the washing chamber 121.

[0117] The heat exchange device 40 uses the heat emitted by the delivery pump 30 to heat the washing water. While keeping the set water temperature of the dishwasher constant, it reduces the energy consumption of the heating device 50, thereby reducing the energy consumption of the dishwasher.

[0118] In some possible implementations of the embodiments of this application, reference is made to Figure 5 The heat exchange device 40 may also include a water outlet pipe 460. The second liquid outlet 418 can be connected to the pipe body 510 through the water outlet pipe 460. In this way, the water in the heat exchange chamber 411 can be further heated in the pipe body 510 before flowing to the delivery pump 30, so that the water temperature from the heat exchange chamber 411 reaches the set washing water temperature before being delivered to the spray arm.

[0119] In some possible implementations of the embodiments of this application, reference is made to Figure 4 The heat exchange box 410 may be disposed outside at least a portion of the drive unit 320. During operation, the drive unit 320 generates heat and dissipates heat to the outside. The heat exchange box 410 is disposed outside the drive unit 320 so that the water in the heat exchange chamber 411 can exchange heat with the drive unit 320, thereby utilizing the heat dissipated by the drive unit 320.

[0120] In some possible implementations of the embodiments of this application, reference is made to Figure 6 and Figure 7The heat exchange box 410 may include a box body 412. The box body 412 has a heat exchange chamber 411 and is configured with a second liquid inlet 417 and a second liquid outlet 418.

[0121] refer to Figure 6 , Figure 7 and Figure 8 The heat exchange box 410 may also include a retaining ring 419, which can be connected to the box body 412.

[0122] In some embodiments, reference Figure 8 The retaining ring 419 can be integrally formed with the box body 412.

[0123] In other embodiments, the retaining ring 419 and the housing 412 can be fixedly connected by fasteners (fastening bolts or retaining pins, etc.).

[0124] The retaining ring 419 can be fitted onto the outside of the transfer pump 30 to simplify the connection between the heat exchange box 410 and the transfer pump 30.

[0125] In some possible implementations of the embodiments of this application, reference is made to Figure 7 , Figure 9 , Figure 10 and Figure 11 The heat exchange device 40 may further include a first fixing member 430 and a second fixing member 440. The first fixing member 430 and the second fixing member 440 are respectively located on both sides of the fixing ring 419 along the axial direction. The first fixing member 430 may be provided with a first fixing hole 431. The second fixing member 440 may be provided with a second fixing hole 441. The inner wall of the fixing ring 419 may be constructed with a recessed channel 4191 that is recessed radially outward along the fixing ring 419. The recessed channel 4191, the first fixing hole 431 and the second fixing hole 441 are arranged opposite to each other, and fasteners (fastening bolts or fixing pins, etc.) may pass through the first fixing hole 431, the recessed channel 4191 and the second fixing hole 441 to fix the fixing ring 419 to the transfer pump 30 or the drive device 320.

[0126] In some possible implementations of the embodiments of this application, reference is made to Figure 8 and Figure 12 The housing 412 may include a main heat exchange section 413, which is connected to a fixing ring 419 and has a first liquid storage chamber 414 inside.

[0127] The housing 412 may also include an auxiliary heat exchange section 415, which is disposed on one side of the main heat exchange section 413 along the axial direction of the fixing ring 419. The auxiliary heat exchange section 415 has a second liquid storage chamber 416, which is connected to the first liquid storage chamber 414. The first liquid storage chamber 414 and the second liquid storage chamber 416 form a heat exchange chamber 411.

[0128] The auxiliary heat exchange section 415 can increase the heat exchange area of ​​the washing water in the heat exchange chamber 411 and the heat exchange efficiency of the delivery pump 30 or the drive device 320, thereby improving the heat exchange efficiency of the heat exchange device 40 and the delivery pump 30.

[0129] In some possible implementations of the embodiments of this application, reference is made to Figure 6 , Figure 7 and Figure 11 The second liquid inlet 417 can be set at the top of the side wall of the heat exchange box 410 or at the top wall of the heat exchange box 410 to increase the height of the second liquid inlet 417 relative to the heat exchange chamber 411 and reduce the possibility of the washing water in the heat exchange chamber 411 flowing back from the second liquid inlet 417.

[0130] A liquid inlet pipe can be provided on the heat exchange box 410. One end of the liquid inlet pipe is connected to the heat exchange box 410, and the other end of the liquid inlet pipe can form a second liquid inlet 417. The end of the liquid inlet pipe away from the heat exchange box 410 can be tilted upward to reduce the possibility of washing water in the heat exchange chamber 411 flowing back from the second liquid inlet 417.

[0131] The height of the second outlet 418 can be lower than the height of the second inlet 417. The second outlet 418 can be located at the bottom of the side wall of the heat exchange box 410 or at the bottom wall of the heat exchange box 410 to reduce the height of the second outlet 418 relative to the heat exchange chamber 411. This allows the washing water in the heat exchange chamber 411 to be discharged from the second outlet 418 to the first inlet 311 of the transfer pump 30 as much as possible, reducing the amount of washing water retained in the heat exchange chamber 411 and improving the space utilization rate of the heat exchange chamber 411.

[0132] In some possible implementations of the embodiments of this application, reference is made to Figure 5 , Figure 6 and Figure 7 The heat exchange device 40 may also include a control valve 420, which may be a solenoid valve or other valve. The control valve 420 may be installed in the heat exchange box 410 and is used to control the opening or closing of the second liquid outlet 418.

[0133] When it is necessary to deliver the washing water in the heat exchange chamber 411 to the spray arm, the control valve 420 opens the second outlet 418, so that the washing water in the heat exchange chamber 411 can flow from the second outlet 418 to the delivery pump 30, and then be delivered to the spray arm.

[0134] When it is not necessary to deliver the washing water in the heat exchange chamber 411 to the spray arm, the control valve 420 closes the second liquid outlet 418.

[0135] In some possible implementations of the embodiments of this application, reference is made to Figure 2, Figure 3 , Figure 4 and Figure 5 The dishwasher may also include a water softener 60, which has a water softening chamber for holding water softening salt. The water softener 60 is configured to have a third inlet 610, which is connected to the water softening chamber and is used to supply washing water into the water softening chamber.

[0136] The water softener 60 may also be configured to have a third outlet 620, which is connected to the water softening chamber and is used to connect with the first inlet 311.

[0137] The washing water first flows into the softening chamber, where the softening salt removes hardness ions such as calcium and magnesium ions, thus converting hard water into soft water and reducing limescale buildup inside the dishwasher.

[0138] The softened water flows from the first inlet 311 to the delivery pump 30, thereby reducing the formation of scale on the delivery pump 30, spray arm, etc.

[0139] In some possible implementations of the embodiments of this application, reference is made to Figure 5 The third outlet 620 can also be connected to the second inlet 417 through the water inlet pipe 450. The softened water flows from the second inlet 417 into the heat exchange box 410, which can reduce the scale buildup in the heat exchange box 410.

[0140] In some possible implementations of the embodiments of this application, reference is made to Figure 5 The third outlet 620 can be connected to the first inlet 311 and the second inlet 417 via a three-way valve 470.

[0141] In some possible implementations of the embodiments of this application, reference is made to Figures 2-5 The dishwasher may also include a sink 70, which may be disposed at the bottom of the inner tank 120. The sink 70 has a cavity 710 with a top opening, which communicates with the washing chamber 121 and is also connected to the first liquid inlet 311.

[0142] Water sprayed from the spray arm into the washing chamber 121 flows down into the tank 70 cavity 710, then flows from the tank 710 to the first liquid inlet 311 of the delivery pump 30, and then flows back to the spray arm, thus reusing the water and reducing the dishwasher's water consumption.

[0143] In the implementation of the heating device 50 including the pipe body 510, the trough 710 can be connected to the port of the pipe body 510 away from the delivery pump 30, so that the water in the trough 710 flows through the pipe body 510 to the delivery pump 30, and then flows to the spray arm.

[0144] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0145] For ease of explanation, the above description has been provided in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained based on the above teachings. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, thereby enabling those skilled in the art to better utilize the described embodiments and various different variations of embodiments suitable for specific use considerations.

Claims

1. A dishwasher, characterized in that include: The box (10) is constructed to form a receiving cavity; An inner liner (120) is disposed within the receiving cavity, and a washing cavity (121) is formed within the inner liner (120); The spray arm is located inside the washing chamber (121) and is rotatably mounted on the inner tank (120); A delivery pump (30) is disposed within the housing (10), the delivery pump (30) being used to deliver washing water to the spray arm; the delivery pump (30) has: The first liquid inlet (311) is used to supply washing water into the transfer pump (30); The first liquid outlet (312) is used to communicate with the inner cavity of the spray arm; A heating device (50) is used to heat the washing water flowing to the delivery pump (30); Heat exchange device (40), comprising: A heat exchange box (410) is disposed around at least a portion of the exterior of the delivery pump (30), the heat exchange box (410) having: Heat exchange cavity (411); The second liquid inlet (417) is connected to the heat exchange chamber (411) and is used to supply washing water into the heat exchange chamber (411). The second liquid outlet (418) is connected to the heat exchange chamber (411) and is used to connect to the first liquid inlet (311).

2. The dishwasher according to claim 1, characterized in that, The delivery pump (30) includes: The pump housing (310) is constructed to form a fluid cavity, a first inlet (311) and a first outlet (312), both of which are in communication with the fluid cavity; An impeller is disposed within the fluid cavity; A drive unit (320) is connected to the pump casing (310), and the drive unit (320) is connected to the impeller and drives the impeller to rotate; The heat exchange box (410) is disposed outside at least a portion of the drive device (320).

3. The dishwasher according to claim 1, characterized in that, The heat exchange box (410) includes: The box body (412) is constructed with the heat exchange chamber (411), the second liquid inlet (417) and the second liquid outlet (418); A retaining ring (419) is connected to the housing (412) and is sleeved on the outside of the delivery pump (30).

4. The dishwasher according to claim 3, characterized in that, The housing (412) includes: The main heat exchange section (413) is connected to the fixed ring (419), and the main heat exchange section (413) has a first liquid storage chamber (414); An auxiliary heat exchange unit (415) is disposed on one side of the main heat exchange unit (413) along the axial direction of the fixing ring (419). The auxiliary heat exchange unit (415) has a second liquid storage chamber (416) which is connected to the first liquid storage chamber (414).

5. The dishwasher according to any one of claims 1-4, characterized in that, The heat exchange device (40) further includes a control valve (420), which is disposed in the heat exchange box (410) and is used to control the second liquid outlet (418) to open or close.

6. The dishwasher according to any one of claims 1-4, characterized in that, The heating device (50) includes: The tube body (510) has one end for allowing washing water to enter the inner cavity of the tube body, and the other end is connected to the first liquid inlet (311); A heating element is disposed on the wall of the pipe body (510) for heating the water inside the pipe body (510).

7. The dishwasher according to claim 6, characterized in that, The second liquid outlet (418) is connected to the inner cavity of the tube body (510).

8. The dishwasher according to any one of claims 1-4, characterized in that, The dishwasher also includes a water softener (60), which has a water softening chamber and is configured as follows: The third liquid inlet (610) is connected to the soft water chamber and is used to supply washing water into the soft water chamber. The third outlet (620) is connected to the soft water cavity, and the third outlet (620) is used to connect to the first inlet (311).

9. The dishwasher according to claim 8, characterized in that, The third outlet (620) is also used to communicate with the second inlet (417).

10. The dishwasher according to any one of claims 1-4, characterized in that, The dishwasher also includes a water tank (70) disposed at the bottom of the inner tank (120). The water tank (70) has a cavity (710) with a top opening. The cavity (710) is connected to the washing chamber (121) and is also connected to the first liquid inlet (311).

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