A dishwasher

Abstract

The embodiment of the application discloses a dishwasher, relates to the technical field of kitchen appliances, and is invented to reduce the influence of steam generated by the dishwasher on the environment of a back kitchen. The dishwasher comprises a dishwasher body, a washing chamber formed on the dishwasher body, and a steam output port communicated with the washing chamber; a rinsing water tank is arranged on the dishwasher body, and the rinsing water tank is used for providing rinsing water in a rinsing stage to the washing chamber; a steam heat recovery device is arranged on the dishwasher body, and the steam heat recovery device comprises a first heat conduction pipe, a shell with an accommodating cavity formed therein, and the first heat conduction pipe is arranged in the accommodating cavity; an input end of the first heat conduction pipe is communicated with an external water supply source, and an output end is communicated with a water inlet of the rinsing water tank; the steam heat recovery device is provided with a steam input port communicated with the accommodating cavity, and the steam output port of the washing chamber is communicated with the steam input port. The application is suitable for cleaning tableware.

Description

Technical Field

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

[0002] Dishwashers are becoming increasingly common in restaurant kitchens. Due to the large volume of washing and the need for sanitation of tableware in restaurant kitchens, commercial dishwashers used in these kitchens typically operate at high washing temperatures, with the water temperature potentially reaching 80-90 degrees Celsius or even higher during the rinsing stage.

[0003] During the washing process, especially the rinsing process, the high-temperature water inside the dishwasher generates a large amount of steam. When the operator opens the lid and removes the washed dishes after the dishwasher has finished washing, the high-temperature steam escapes into the surrounding environment, causing a significant increase in both temperature and humidity in the kitchen, which affects the working environment of the kitchen staff. Utility Model Content

[0004] In view of this, embodiments of this application provide a dishwasher that can collect and process the steam generated during the dishwasher washing process, so as to reduce the impact of the steam generated by the dishwasher on the kitchen environment.

[0005] This application provides a dishwasher, comprising: a dishwasher body having a washing chamber and a steam outlet communicating with the washing chamber; a rinsing water tank disposed on the dishwasher body, the rinsing water tank being used to provide rinsing water for the rinsing stage to the washing chamber; and a steam heat recovery device disposed on the dishwasher body, the steam heat recovery device including a first heat-conducting pipe and a shell having an internal cavity, the first heat-conducting pipe being disposed within the cavity; the input end of the first heat-conducting pipe being connected to an external water supply source, and the output end being connected to the water inlet of the rinsing water tank; the steam heat recovery device having a steam inlet communicating with the cavity, and the steam outlet of the washing chamber being connected to the steam inlet.

[0006] According to a specific implementation of an embodiment of this application, the steam heat recovery device further includes an air inlet duct and a fan, the air inlet duct and the fan being respectively disposed on opposite sides of the first heat-conducting pipe, the steam input port being disposed at the air inlet end of the air inlet duct, and the air outlet end of the air inlet duct being connected to the accommodating cavity; the fan has an air outlet and an air inlet, the air outlet of the fan facing the outside of the dishwasher body, and the air inlet of the fan facing the first heat-conducting pipe.

[0007] According to a specific implementation of an embodiment of this application, the steam heat recovery device further includes a fan mounting cover, the fan being disposed inside the fan mounting cover and connected to the housing through the fan mounting cover; the fan mounting cover has a first inlet opposite to the air inlet of the fan and a first outlet opposite to the air outlet of the fan.

[0008] According to a specific implementation of an embodiment of this application, the steam heat recovery device further includes a baffle plate, at least a portion of which is located on the air outlet path of the fan.

[0009] According to a specific implementation of an embodiment of this application, the fan mounting cover is further provided with a condensate recovery port; the baffle includes a baffle portion facing the air outlet of the fan and a guide portion connected at one end to the baffle portion, and the other end of the guide portion extends to the condensate recovery port.

[0010] According to a specific implementation of an embodiment of this application, the steam heat recovery device is located above the washing chamber, and the steam outlet is located on the upper part of the rear wall of the washing chamber.

[0011] According to a specific implementation of an embodiment of this application, the steam heat recovery device further includes a guide pipe, one end of which is connected to the steam outlet of the washing chamber, and the other end of which has a U-shaped groove structure; the steam inlet of the shell is connected to one end of the air inlet duct; the air inlet end of the air inlet duct is located in the U-shaped groove to connect the guide pipe and the air inlet duct.

[0012] According to a specific implementation of an embodiment of this application, the dishwasher further includes: a main wash water tank and a wastewater heat recovery device; the main wash water tank is used to provide main wash water for the main wash stage to the washing chamber; the wastewater heat recovery device includes a wastewater recovery water tank and a second heat conduction pipe, the first wastewater inlet of the wastewater recovery water tank is connected to the wastewater outlet of the main wash water tank, the second heat conduction pipe is disposed in the wastewater recovery water tank, the input end of the second heat conduction pipe is connected to the output end of the first heat conduction pipe, and the output end of the second heat conduction pipe is connected to the rinsing water tank.

[0013] According to a specific implementation of this application, the bottom of the wastewater recovery tank is provided with a drain outlet and an overflow pipe surrounding the drain outlet; a hollow area communicating with the drain outlet is formed inside the overflow pipe, a first end of the overflow pipe is connected to the bottom wall of the wastewater recovery tank and a water inlet is provided on the pipe wall of the first end of the overflow pipe, and an insertion port communicating with the hollow area is formed at the second end of the overflow pipe; the wastewater heat recovery device further includes a first overflow rod, the first end of the first overflow rod is provided with an overflow outlet; the second end of the first overflow rod is detachably disposed in the drain outlet through the insertion port; wherein, in the inserted state, the water storage chamber of the wastewater recovery tank is connected to the drain outlet only through the overflow outlet, and in the withdrawn state, the water storage chamber of the wastewater recovery tank is connected to the drain outlet through the water inlet and / or the insertion port.

[0014] According to a specific implementation of this application, the wastewater outlet is located at the top of the main washing water tank, and the height of the wastewater outlet is basically the same as that of the first wastewater inlet or the position of the wastewater outlet is higher than that of the first wastewater inlet.

[0015] According to a specific implementation of an embodiment of this application, the dishwasher further includes a movable lid, wherein when the lid is in a closed state, the washing chamber is located between the dishwasher body and the lid; the dishwasher further includes an electromagnet and an iron ingot, one of which is disposed on the dishwasher body and the other on the lid; wherein, when the dishwasher is in a locked state, the electromagnet is energized and attracts the iron ingot to lock the lid in a closed state; when the dishwasher is in an unlocked state, the electromagnet is de-energized to release the iron ingot, so that the lid can move relative to the dishwasher body.

[0016] According to a specific implementation of an embodiment of this application, the dishwasher body includes a frame, the electromagnet is disposed above the top of the frame, the cover is provided with an iron ingot mounting seat, and the iron ingot is disposed at the bottom of the iron ingot mounting seat.

[0017] According to a specific implementation of an embodiment of this application, the steam heat recovery device includes an outer shell, and the surface of the outer shell facing the cover is provided with grooves; during the process of opening or closing the cover, the electromagnet or iron ingot on the cover can slide in the grooves.

[0018] In this embodiment, the dishwasher's steam heat recovery device includes a first heat-conducting pipe and a shell with an internal cavity. The first heat-conducting pipe is disposed within the cavity, with its input end connected to an external water supply and its output end connected to the inlet of the rinsing water tank. The steam heat recovery device has a steam inlet connected to the cavity, and the steam outlet of the washing chamber is connected to the steam inlet. This allows the high-temperature, high-humidity steam discharged from the washing chamber to enter the cavity and exchange heat with the cooler water in the first heat-conducting pipe. This causes the moisture in the steam to condense upon contact with the cold water, reducing humidity, and the steam temperature also decreases through heat exchange with the water. This reduces the temperature and humidity of the gas discharged from the washing chamber, significantly lowering the temperature and humidity of the gas discharged from the dishwasher into the kitchen environment, minimizing its impact on the kitchen's temperature and humidity, and ensuring a safe working environment. Simultaneously, the temperature of the gas discharged from the washing chamber can also heat the water entering the dishwasher from the external water supply, improving the dishwasher's energy efficiency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a dishwasher provided in one embodiment of this application; Figure 2 A schematic diagram of the steam heat recovery device for a dishwasher provided in an embodiment of this application; Figure 3 A cross-sectional schematic diagram of a steam heat recovery device for a dishwasher provided in an embodiment of this application; Figure 4 This is a schematic diagram of the structure of the fan mounting cover in one embodiment of this application; Figure 5 This is a schematic diagram of the structure of the exhaust hood in one embodiment of this application; Figure 6 This is a schematic diagram of the installation of a steam heat recovery device in one embodiment of this application; Figure 7 This is a schematic diagram of the wastewater heat recovery device in one embodiment of this application; Figure 8 This is a cross-sectional schematic diagram of a wastewater heat recovery device in one embodiment of this application; Figure 9 This is a schematic diagram showing the relative positions of the electromagnet and the iron ingot after they are released from attraction in one embodiment of this application; Figure 10This is a schematic diagram of the electromagnet attracting an iron ingot in one embodiment of this application. Detailed Implementation

[0021] The embodiments of this application will now be described in detail with reference to the accompanying drawings. It should be understood that the described embodiments are merely some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0022] To enable those skilled in the art to better understand the technical concept, implementation scheme and beneficial effects of the embodiments of this application, detailed descriptions are provided below through specific embodiments.

[0023] Figure 1 This is a schematic diagram of the structure of a dishwasher provided in one embodiment of this application. Figure 2 This is a schematic diagram of the steam heat recovery device 3 for a dishwasher provided in one embodiment of this application. Figure 3 A cross-sectional schematic diagram of the steam heat recovery device 3 of a dishwasher provided in an embodiment of this application is shown below. Figure 1 , Figure 2 and Figure 3 As shown, the dishwasher of this embodiment may include: a dishwasher body 1, a rinsing water tank 2, and a steam heat recovery device 3; the dishwasher body 1 has a washing chamber and a steam outlet 1a communicating with the washing chamber; the rinsing water tank 2 is disposed on the dishwasher body 1 and is used to provide rinsing water for the rinsing stage to the washing chamber; the steam heat recovery device 3 is disposed on the dishwasher body 1 and includes a first heat conduction pipe 30 and a housing 31 with an internal cavity, the first heat conduction pipe 30 being disposed in the cavity; the input end of the first heat conduction pipe 30 is connected to an external water supply source, and the output end is connected to the water inlet of the rinsing water tank 2; the steam heat recovery device 3 is provided with a steam inlet communicating with the cavity, and the steam outlet 1a of the washing chamber is connected to the steam inlet.

[0024] In this embodiment, the washing chamber is used to accommodate tableware and to clean (wash) the tableware within the washing chamber. The rinsing water tank 2 is used to hold rinsing water for rinsing the tableware and provides rinsing water to the washing chamber during the rinsing stage of the dishwasher's operation.

[0025] The first heat pipe 30 may be completely or partially located within the cavity of the housing 31. When the first heat pipe 30 is partially located within the cavity of the housing 31, the first heat pipe 30 is sealed to the wall of the housing 31 to prevent vapor leakage.

[0026] To improve the heat exchange efficiency between water and steam entering the first heat pipe 30, the first heat pipe 30 is preferably made of copper.

[0027] The housing 31 can be made of a suitable material, such as stainless steel, according to actual needs. Its shape should be compatible with the shape of the first heat pipe 30.

[0028] The steam inlet of the steam heat recovery device 3 is connected to the steam outlet 1a of the washing chamber, and the steam inlet of the steam heat recovery device 3 is also connected to the accommodating cavity. In this way, the steam in the washing chamber can enter the accommodating cavity through the steam outlet 1a of the washing chamber and the steam inlet of the steam heat recovery device 3. The inlet of the first heat conduction pipe 30 is connected to the external water supply source, and the outlet is connected to the water inlet of the rinsing water tank 2. In this way, the steam entering the accommodating cavity can exchange heat with the cool water that has just entered the dishwasher through the first heat conduction pipe 30.

[0029] The water supplied from the external water source enters the dishwasher at a lower temperature. The high-temperature, high-humidity steam discharged from the washing chamber exchanges heat with the water in the first heat pipe 30, causing the moisture in the steam to condense upon contact with the cold water, thus reducing the humidity. The steam temperature also decreases through heat exchange with the water, thereby lowering the temperature and humidity of the gas discharged from the washing chamber. This significantly reduces the impact on the temperature and humidity of the kitchen environment when the steam is discharged, ensuring a safe working environment. Furthermore, the high-temperature, high-humidity steam discharged from the washing chamber can heat the water in the first heat pipe 30, improving the dishwasher's energy efficiency.

[0030] like Figure 1 and Figure 2 In the illustrated embodiment, the dishwasher's water inlet is equipped with a solenoid valve a. The solenoid valve is connected to the first heat-conducting pipe 30 via a pipeline. When the solenoid valve opens, cold water enters the flow meter b under the pressure of tap water and then enters the first heat-conducting pipe 30, eliminating the need for a separate booster pump. After exchanging heat with the steam in the accommodating cavity in the first heat-conducting pipe 30, the cold water is discharged from the drain outlet of the first heat-conducting pipe 30.

[0031] After passing through the first heat pipe 30 of the steam heat recovery device 3, the water can be transported to the rinsing water tank 2, or enter the rinsing water tank 2 after undergoing other heat recovery methods, and be reheated to a predetermined temperature or not heated as needed, thereby realizing the recovery and utilization of steam heat in the washing chamber and improving energy utilization.

[0032] To improve the efficiency of steam flowing into the steam heat recovery unit 3, see [reference needed]. Figure 2 and Figure 3In some examples, the steam heat recovery device 3 may further include: an air inlet duct 32 and a fan 33; the air inlet duct 32 and the fan 33 are respectively arranged on opposite sides of the first heat-conducting pipe 30, the steam inlet is arranged at the air inlet end of the air inlet duct 32, and the air outlet end of the air inlet duct 32 is connected to the accommodating cavity; the fan 33 has an air outlet and an air inlet, the air outlet of the fan 33 faces the outside of the dishwasher body 1, and the air inlet of the fan 33 faces the first heat-conducting pipe 30.

[0033] By using the suction action of the fan 33, steam can be actively drawn into the steam heat recovery device 3 and fully exchanged with the water in the first heat pipe 30, thereby improving the efficiency of steam heat recovery and reducing the temperature and humidity of the exhaust gas.

[0034] In some embodiments, the fan 33 can be turned on after the dishwasher's washing cycle is completed, thereby initiating the steam heat recovery process. In other embodiments, the fan 33 can also be turned on during the dishwasher's operation, depending on the washing stage, to initiate the steam heat recovery process. For example, the fan 33 can be turned on and the steam heat recovery process can be performed during the rinsing process.

[0035] See also Figure 2 , Figure 3 and Figure 4 In order to facilitate fixing and prevent dirt from entering the fan 33 and causing damage, in some examples, the steam heat recovery device 3 may also include: a fan mounting cover 34, the fan 33 is installed inside the fan mounting cover 34 and connected to the housing 31 through the fan mounting cover 34; the fan mounting cover 34 is provided with a first inlet (not shown in the figure) opposite to the air inlet of the fan 33 and a first outlet 340 opposite to the air outlet of the fan 33.

[0036] like Figure 4 In the illustrated embodiment, the top of the fan mounting cover 34 is designed with screw holes to fix the fan 33 to the top of the fan mounting cover 34. The bottom and rear of the fan 33 are designed with mounting holes for mounting and fixing the fan connecting plate 35. The fan connecting plate 35 has mounting holes on both sides to mate with the mounting holes on the housing 31 for fixation. To prevent steam or condensate leakage, a sealing gasket c is installed between the fan connecting plate 35 and the steam outlet 1a of the housing 31 for sealing. Alternatively, sealant can be used instead of a sealing gasket to achieve a sealing effect.

[0037] An outer shell 36 can be fitted over the outer shell 31, and the fan mounting cover 34 can be fixed to the mounting hole on the top of the outer shell 36, thereby encapsulating the steam heat recovery device entirely within the shell 31 and reducing the impact of the external environment on it.

[0038] The fan 33, the first heat pipe 30, and the housing 31 are all housed inside the outer casing 36, and the air inlet duct is at least partially located within the outer casing 36. The fan 33, the first heat pipe 30, and the air inlet duct are arranged sequentially from top to bottom along the height direction of the outer casing 36.

[0039] Because there may be a temperature difference between the steam and the fan mounting cover 34, when the steam flows through the fan mounting cover 34, the fan mounting cover 34 condenses the steam, producing condensate water, or water droplets generated by other processes in the steam. In this way, the condensate water or water droplets will be thrown out from the air outlet of the fan mounting cover 34 into the environment where the dishwasher is located, such as the kitchen, resulting in a poor user experience. In order to prevent condensate water or other water droplets from being thrown into the environment where the dishwasher is located, in some examples, the steam heat recovery device 3 may also include: a baffle 37, at least part of which is located on the air outlet path of the fan 33.

[0040] At least part of the baffle 37 is located in the air outlet path of the fan 33, which can prevent condensate or other water droplets from being thrown out of the dishwasher and polluting the surrounding environment.

[0041] In one specific example, the baffle 37 is disposed on the fan mounting cover 34. The baffle 37 can be fixed to the front of the fan mounting cover 34, i.e., the side where the air outlet of the fan mounting cover 34 is located, by welding.

[0042] See Figure 3 and Figure 4 In order to prevent the condensate generated during the steam heat recovery process from accumulating in the steam heat recovery device 3 and being unable to be discharged, in some examples, the fan mounting cover 34 is also provided with a condensate recovery port 341; the baffle 37 includes a baffle portion 370 facing the air outlet of the fan 33, and a guide portion 371 connected at one end to the baffle portion 370, and the other end of the guide portion 371 extends to the condensate recovery port 341.

[0043] The shield 370 is located in the air outlet path of the fan and can block water droplets or condensate discharged from the air outlet of the fan mounting cover 34.

[0044] The guide section 371 can be tilted toward the condensate recovery port 341, that is, it has an inclined angle with the air outlet of the fan mounting cover 34. This ensures that the condensate can flow smoothly into the condensate recovery port 341 of the fan mounting cover 34 without dripping to the outside.

[0045] Furthermore, the condensate recovery port 341 can be connected to the steam output port 1a of the housing 31, so that the recovered water droplets enter the housing 31 through the condensate recovery port 341 and the steam output port 1a of the housing 31.

[0046] After the condensate is collected on the baffle plate 37, the condensate enters the fan mounting cover 34 through the condensate recovery port 341 under the action of gravity. Under the action of weight, it flows into the housing 31, the air inlet duct 32, the steam inlet, and finally into the washing chamber through the steam outlet 1a. This avoids the problem of condensate accumulating in the steam heat recovery device, which could lead to mold growth or even damage inside the device.

[0047] See Figure 5 In order to further guide the airflow, reduce turbulence and eddies, and make the exhaust more smooth, in some examples, the steam heat recovery device 3 also includes: an exhaust hood 38, which is connected to the fan mounting cover 34 and has a first outlet 340 facing the exhaust hood 38; an exhaust port 380 is provided on the side wall of the exhaust hood 38.

[0048] In a specific example, the exhaust hood 38 is designed with mounting claws and mounting holes, and the front of the fan mounting cover 34 (the side where the first outlet 340 is located) is designed with an exhaust hood 38 mounting slot, and the top is designed with an exhaust hood 38 mounting hole. The exhaust hood 38 mounting claws are installed into the mounting slot of the fan mounting cover 34, and bolts are used to connect the fan mounting cover 34 to the mounting hole, thereby fixing the exhaust hood 38. The exhaust hood 38 is designed with an exhaust port 380 to ensure that the cooled steam can be smoothly discharged from the machine body.

[0049] like Figure 5 In the embodiment shown, exhaust vents 380 are respectively provided on the two opposite side walls of the exhaust hood 38.

[0050] Hot steam has the characteristic of flowing upwards. In order to facilitate the flow of hot steam from the washing chamber into the receiving cavity of the housing 31, in some examples, the steam heat recovery device 3 is located above the washing chamber, and the steam outlet 1a is located on the upper part of the rear wall of the washing chamber.

[0051] The steam heat recovery device 3 is located above the washing chamber, and the steam outlet 1a is located on the upper part of the rear wall of the washing chamber. In this way, the hot steam in the washing chamber flows upward and can easily flow into the receiving cavity of the housing 31 through the steam outlet 1a.

[0052] Steam can easily leak along the path from the washing chamber into the receiving cavity of housing 31. To prevent leakage, see [reference needed]. Figure 6 In some examples, the steam heat recovery device 3 also includes a guide pipe 39, one end of which is connected to the steam outlet 1a of the washing chamber, and the other end is formed with a U-shaped groove structure; the steam inlet of the steam heat recovery device 3 is connected to one end of the air inlet duct 32; the air inlet end of the air inlet duct 32 is located in the U-shaped groove to connect the guide pipe 39 and the air inlet duct 32.

[0053] The air intake end of the air intake duct 32 is located in a U-shaped groove, which connects the guide pipe 39 and the air intake duct 32 while preventing steam leakage and condensate outflow. In particular, sealant can be added to the U-shaped groove to achieve a better sealing effect.

[0054] The steam heat recovery device 3 is equipped with mounting holes for connecting the air intake duct 32. It is designed with multiple or two air intake ducts 32, which can effectively increase the effective area of ​​the air intake channel and accelerate the steam entry speed.

[0055] Similarly, to prevent steam and condensate leakage, the steam inlet of the steam heat recovery device 3 and one end of the air inlet duct 32 can be sealed. Specifically, a sealing gasket d can be used, or sealant can be used instead of a sealing gasket to achieve the seal.

[0056] The technical solution of this application will be illustrated below with a specific example.

[0057] The steam heat recovery device 3 is installed on the top of the dishwasher frame cover. Mounting holes are designed on the bottom of the outer casing of the steam heat recovery device 3, which mate with the mounting holes on the frame cover to secure the device. A steam outlet 1a is designed on the water-proof panel 1b of the dishwasher frame to supply steam to the steam heat recovery device 3. A steam interface assembly is designed on the air inlet of the water-proof panel 1b, which can connect to the air intake duct 32 of the steam heat recovery device 3. The steam interface assembly has an outer ring and an inner ring, forming a U-shaped groove between them. When the steam interface assembly is connected to the air intake duct 32 of the steam heat recovery device 3, the inlet of the air intake duct 32 can be inserted into this U-shaped groove.

[0058] When the fan 33 is working, under the suction of the fan 33, the steam in the dishwasher washing chamber will enter the steam heat recovery device 3 through the steam output port 1a on the water-proof panel 1b, the steam interface assembly, and the air intake duct 32. Inside the housing 31 of the steam heat recovery device 3, the hot steam exchanges heat with the cold water in the first heat conduction pipe 30. The cooled and humidified gas is discharged to the outside through the fan 33, the fan mounting cover 34, the baffle plate 37, and the exhaust cover 38.

[0059] After the condensate is collected on the baffle plate 37, the condensate enters the fan mounting cover 34 through the condensate recovery port 341 under the action of gravity, and then flows into the housing 31 and the air intake duct 32 in sequence under the action of weight, and finally flows into the washing chamber of the dishwasher through the steam output port 1a on the water-proof panel 1b.

[0060] In this embodiment of the application, if the dishwasher directly discharges the water used for washing dishes with hot water as wastewater, the water temperature will still be high at this time, resulting in energy loss. See also Figure 7 and Figure 8 In some examples, the dishwasher may also include: a main wash water tank 4 and a wastewater heat recovery device 5; the main wash water tank 4 is used to provide main wash water for the main wash stage to the washing chamber; the wastewater heat recovery device 5 includes a wastewater recovery water tank 50 and a second heat conduction pipe 51; the first wastewater inlet 50a of the wastewater recovery water tank 50 is connected to the wastewater outlet 40 of the main wash water tank 4; the second heat conduction pipe 51 is disposed in the wastewater recovery water tank 50; the input end of the second heat conduction pipe 51 is connected to the output end of the first heat conduction pipe 30, and the output end of the second heat conduction pipe 51 is connected to the rinsing water tank 2.

[0061] The main wash tank 4 is connected to the washing chamber located above it. During the main wash and rinse cycles, the corresponding washing arms of the dishwasher spray the main wash water and rinse water onto the dishes in the washing chamber, respectively. This wash water then flows into the main wash tank 4 for recycling during the main wash phase. When the main wash tank 4 is full, excess water flows from the wastewater outlet 40 of the main wash tank 4 into the first wastewater inlet 50a of the wastewater recovery tank 50, thus allowing water from the main wash tank 4 to flow into the wastewater recovery tank 50. The water flowing out of the main wash tank is at a higher temperature, which can heat the wash water flowing through the second heat pipe 51. The heated wash water flows into the rinse water tank 2, providing rinse water for the dishwasher's operation, thereby utilizing the heat from the dishwasher's wastewater and improving the dishwasher's energy efficiency.

[0062] In a specific example, the second heat pipe 51 can be a coil, which is fixed in the wastewater recovery tank 50. The coil is designed with an inlet and an outlet. The pre-heated tap water from the steam heat recovery device 3 enters the inlet of the coil through a pipeline. Inside the coil, the tap water and hot wastewater are heated through heat exchange and discharged from the outlet of the coil, and then enter the rinsing tank 2 through a pipeline.

[0063] To ensure that water from the washing chamber does not directly enter the wastewater recovery tank 50, in one embodiment, a wastewater heat recovery cover plate 52 is provided on the top of the wastewater recovery tank 50. A ring of welding plates is welded to the main body of the wastewater heat recovery cover plate 52, forming a mounting groove between the welding plates and the main body of the wastewater heat recovery cover plate. A cover plate sealing ring can be installed in the mounting groove. The cover plate sealing ring cooperates with the wastewater recovery tank 50 to achieve a sealing effect, ensuring that water from the washing chamber does not enter the wastewater recovery tank 50 through the wastewater heat recovery cover plate 52. In particular, the outer ring of the sealing ring is provided with multiple sealing ribs, which can enhance the sealing effect.

[0064] Considering the subsequent cleaning and maintenance of the wastewater recovery tank 50, the coil is detachably installed in the wastewater recovery tank 50. Specifically, a coil fixing flange is welded to the end of the coil, and welding studs are welded around it; the front of the wastewater recovery tank 50 is designed with a coil installation hole. When installing the coil, the coil passes through the coil installation hole and is locked from the outside of the tank with a nut.

[0065] Considering the thin wall thickness of the wastewater recovery tank 50, installation could lead to plastic deformation. Therefore, a coil reinforcement flange can be installed on the surface of the wastewater recovery tank 50. To ensure the tank's sealing performance, a sealing gasket is required to seal the coil mounting holes. A spacing retainer is welded to the coil to prevent arbitrarily changing coil spacing. A lower coil support is welded to the bottom of the coil and fixed to the base plate of the wastewater recovery tank 50 with screws. Similarly, an upper coil support is welded to the top of the coil and fixed to the side wall of the wastewater recovery tank 50 with screws to prevent coil movement.

[0066] In some examples, the bottom of the wastewater recovery tank 50 is provided with a drain outlet and an overflow pipe 53 surrounding the drain outlet; a hollow area communicating with the drain outlet is formed inside the overflow pipe 53, the first end of the overflow pipe 53 is connected to the bottom wall of the wastewater recovery tank 50 and a water inlet 530 is provided on the pipe wall of the first end of the overflow pipe 53, and the second end of the overflow pipe 53 is formed as an insertion port communicating with the hollow area; the wastewater heat recovery device 5 also includes a first overflow rod 54, the first end of the first overflow rod 54 is provided with an overflow outlet 540; the second end of the first overflow rod 54 is detachably disposed in the drain outlet through the insertion port; wherein, in the inserted state, the water storage chamber of the wastewater recovery tank 50 is connected to the drain outlet only through the overflow outlet 540; in the pulled-out state, the water storage chamber of the wastewater recovery tank 50 is connected to the drain outlet through the water inlet 530 and / or the insertion port.

[0067] During operation, the first overflow rod 54 is inserted into the drain outlet. When the dishwasher needs to empty the water in the wastewater recovery tank 50 for reasons such as washing, the first overflow rod 54 is pulled out to empty the water in the wastewater recovery tank 50.

[0068] A hollow area is formed inside the first overflow rod 54. The overflow port 540 on the first overflow rod 54 is connected to the hollow area. When the first overflow rod 54 is inserted into the drain port, that is, when the first overflow rod 54 is in the inserted state, when the wastewater level in the wastewater recovery tank 50 rises to the overflow port 540, the wastewater enters the drain port through the overflow port 540, thereby discharging the wastewater out of the dishwasher.

[0069] See Figure 8When the first overflow rod 54 is in the inserted state, the wastewater near the bottom of the wastewater recovery tank 50 can enter the drain outlet through the water inlet and overflow outlet 540 on the overflow pipe 53, thereby discharging the wastewater outside the dishwasher. Since the temperature of the wastewater near the bottom of the wastewater recovery tank 50 is relatively low, through the above process, this part of the wastewater can be discharged first, thus maintaining the temperature of the wastewater in the wastewater recovery tank 50 at a higher level, thereby increasing the water temperature inside the wastewater recovery tank 50 and further improving the efficiency of the wastewater recovery tank 50.

[0070] The first end of the overflow pipe 53 is detachably located at the bottom of the wastewater recycling tank 50.

[0071] The overflow pipe 53 is detachably connected to the bottom of the wastewater recovery tank 50. Specifically, the bottom of the overflow pipe 53 is designed with a flange and mounting holes. The bottom of the wastewater recovery tank 50 is provided with fixing bolts. The overflow pipe 53 is fixed to the wastewater recovery tank 50 using bolts and nuts. When the overflow pipe 53 is blocked due to oil or other contaminants, it can be removed, cleaned, and reinstalled.

[0072] In one embodiment, the first wastewater inlet 50a on the wastewater recovery tank 50 is higher than the overflow port 540 of the first overflow rod 54, so that water can be discharged normally from the wastewater recovery tank 50. In a specific example, a first drain connector 55 can be provided at the drain outlet; the outer edge of the second end of the first overflow rod 54 is adapted to the inner edge of the first drain connector 55.

[0073] The first drain connector 55 is detachably connected to the wastewater recycling tank 50.

[0074] See Figure 7 In some examples, the bottom of the main wash tank 4 is provided with a second drain outlet; the bottom of the main wash tank 4 and the connecting part corresponding to the second drain outlet are provided with a second drain connector 41; the main wash tank 4 is provided with a second overflow rod 42, and the first end of the second overflow rod 42 is inserted into the second drain connector 41, and the outer edge of the second end of the second overflow rod 42 is adapted to the inner edge of the second drain connector 41; the side wall of the wastewater recovery tank 50 is provided with a second wastewater inlet; the second drain connector 41 is connected to the second wastewater inlet.

[0075] The bottom of the second overflow rod 42 is designed with a sealing cone surface, and the second drain connector 41 is designed with a matching cone surface. The second overflow rod 42 and the second drain connector 41 are sealed by the cone surface.

[0076] The second drain connector 41 is connected to the second wastewater inlet via a pipeline.

[0077] After the dishwasher completes the main wash cycle, the water in the main wash tank 4 needs to be drained. Simply pull out the first overflow rod 54 and the second overflow rod 42 to drain the water from the main wash tank 4 and the wastewater recovery tank 50 out of the dishwasher.

[0078] When only the water in the wastewater recovery tank 50 needs to be drained, simply pull out the first overflow rod 54. In order to smoothly drain the wastewater in the main wash tank 4, the height of the second wastewater inlet is lower than the height of the outlet of the second drain connector 41.

[0079] In some examples, the wastewater outlet 40 is located at the top of the main washing water tank 4, and the wastewater outlet 40 is at approximately the same height as the first wastewater inlet 50a or the wastewater outlet 40 is located higher than the first wastewater inlet 50a.

[0080] Wastewater outlet 40 and first wastewater inlet 50a can be connected by a side overflow pipe e or welded together as a single unit pipe, ensuring that hot wastewater in main wash water tank 4 can flow smoothly into wastewater recovery tank 50. When the water level in main wash water tank 4 reaches or exceeds the position of wastewater outlet 40, the water at the top of main wash water tank 4 will enter wastewater recovery tank 50 through wastewater outlet 40, side overflow pipe 53 and first wastewater inlet 50a.

[0081] In this application, by placing the wastewater outlet 40 of the main wash tank 4 at the top of the tank, the water in the washing chamber enters from the top of the main wash tank 4, resulting in a higher water temperature at the top. Consequently, the water entering the wastewater recovery tank 50 is also at a higher temperature, effectively improving the recovery efficiency of the wastewater heat recovery device 5. Simultaneously, since oil has a lower density than water, it floats on the surface of the water in the main wash tank 4. By placing the wastewater outlet 40 at the top of the main wash tank 4, the oil on the surface of the main wash tank 4 can overflow smoothly into the wastewater recovery tank 50 and be discharged to the outside, reducing the amount of oil in the main wash tank 4 and ensuring the cleaning effect of the dishwasher.

[0082] In existing technology, before the dishwasher cycle is finished, operators may prematurely open the lid 6 due to various factors, causing the washing process to terminate early. This can result in unclean dishes or even food safety risks. To prevent premature opening of the lid 6, in some examples, the dishwasher may also include a movable lid 6. When the lid 6 is closed, the washing chamber is located between the dishwasher body 1 and the lid 6. The dishwasher may also include an electromagnet 7 and an iron ingot 8, one of which is disposed on the dishwasher body 1 and the other on the lid 6. When the dishwasher is in a locked state, the electromagnet 7 is energized and attracts the iron ingot 8 to lock the lid 6 in a closed state. When the dishwasher is in an unlocked state, the electromagnet 7 is de-energized to release the iron ingot 8, allowing the lid 6 to move relative to the dishwasher body 1.

[0083] In this application, the dishwasher may be in a locked state when, but is not limited to, when it is in the washing cycle or when the steam heat recovery device 3 is performing steam heat recovery. The specific locking logic can be set according to the actual situation and is not limited here.

[0084] like Figure 9 and Figure 10 In the illustrated embodiment, electromagnet 7 is mounted on the dishwasher body 1, and iron ingot 8 is mounted on the lid 6. When the lid 6 is closed, the iron ingot 8 on top of the lid 6 contacts the electromagnet 7. At this time, energizing the electromagnet 7 generates a magnetic field, causing the electromagnet 7 to attract the iron ingot 8, thus locking the lid 6 and preventing it from opening. After the dishwasher completes the wash cycle according to the programmed settings, the electromagnet 7 is de-energized, the magnetic field disappears, and it can no longer attract the iron ingot 8, thus releasing the attraction between the electromagnet 7 and the iron ingot 8, thereby ensuring that the lid 6 can be opened normally.

[0085] In one specific embodiment, the dishwasher body 1 may include a frame, an electromagnet 7 is disposed above the top of the frame, an iron ingot mounting base 9 is provided on the cover 6, and an iron ingot 8 is disposed at the bottom of the iron ingot mounting base 9.

[0086] In one embodiment, the electromagnet 7 is fixed to the suction cup mounting box by screws, and the suction cup mounting box is fixed to the top of the dishwasher body 1 frame by bolts. The iron ingot 8 is fixed to the bottom of the iron ingot mounting base 9, and the iron ingot mounting base 9 is fixed to the top of the cover 6 by screws.

[0087] In order to make the iron ingot 8 and the electromagnet 7 more firmly attracted, in some examples, the dishwasher may also include an elastic element 10, one end of which is connected to the top of the lid 6 and the other end is connected to the iron ingot 8.

[0088] The iron ingot mounting base 9 has an elastic element 10 inside. When the iron ingot 8 and the electromagnet 7 are attracted, the iron ingot 8 squeezes the electromagnet 7 through the elastic element 10, ensuring that the iron ingot 8 and the electromagnet 7 can be completely attached, making it easier for the electromagnet 7 to attract the iron ingot 8.

[0089] In order to reduce the space occupied by the dishwasher and to allow the lid 6 to move freely, in some examples, the steam heat recovery device 3 may also include a housing 36 with grooves on the surface of the housing 36 facing the lid 6; during the opening or closing of the lid 6, the electromagnet 7 or iron ingot 8 on the lid 6 can slide in the grooves.

[0090] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0091] The various embodiments in this specification are described in a related manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0092] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A dishwasher, characterized in that, include: The dishwasher body has a washing chamber and a steam outlet communicating with the washing chamber. A rinsing water tank is disposed on the dishwasher body and is used to provide rinsing water for the rinsing stage to the washing chamber. A steam heat recovery device is installed on the dishwasher body. The steam heat recovery device includes a first heat-conducting pipe and a shell with an internal accommodating cavity. The first heat-conducting pipe is installed inside the accommodating cavity. The input end of the first heat-conducting pipe is connected to an external water supply source, and the output end is connected to the water inlet of the rinsing water tank; the steam heat recovery device is provided with a steam inlet connected to the accommodating cavity, and the steam outlet of the washing chamber is connected to the steam inlet.

2. The dishwasher according to claim 1, characterized in that, The steam heat recovery device further includes an air inlet duct and a fan, which are respectively arranged on opposite sides of the first heat-conducting pipe. The steam inlet is located at the air inlet end of the air inlet duct, and the air outlet end of the air inlet duct is connected to the accommodating cavity. The fan has an air outlet and an air inlet. The air outlet of the fan faces the outside of the dishwasher body, and the air inlet of the fan faces the first heat pipe.

3. The dishwasher according to claim 2, characterized in that, The steam heat recovery device also includes a fan mounting cover, the fan is disposed inside the fan mounting cover and connected to the housing through the fan mounting cover; the fan mounting cover has a first inlet opposite to the air inlet of the fan and a first outlet opposite to the air outlet of the fan.

4. The dishwasher according to claim 3, characterized in that, The steam heat recovery device also includes a baffle plate, at least a portion of which is located on the air outlet path of the fan.

5. The dishwasher according to claim 4, characterized in that, The fan mounting cover is also equipped with a condensate recovery port; The baffle plate includes a front baffle facing the air outlet of the fan and a guide section connected at one end to the front baffle, the other end of the guide section extending to the condensate recovery port.

6. The dishwasher according to claim 1, characterized in that, The steam heat recovery device is located above the washing chamber, and the steam outlet is located on the upper part of the rear wall of the washing chamber.

7. The dishwasher according to claim 2, characterized in that, The steam heat recovery device also includes a guide pipe, one end of which is connected to the steam outlet of the washing chamber, and the other end has a U-shaped groove structure. The steam inlet of the steam heat recovery device is connected to one end of the air intake duct; the air intake end of the air intake duct is located in the U-shaped groove to connect the guide pipe and the air intake duct.

8. The dishwasher according to claim 1, characterized in that, The dishwasher also includes: a main wash tank and a wastewater heat recovery device; The main wash tank is used to supply the main wash water for the main wash stage in the washing room; The wastewater heat recovery device includes a wastewater recovery tank and a second heat-conducting pipe. The first wastewater inlet of the wastewater recovery tank is connected to the wastewater outlet of the main washing tank. The second heat-conducting pipe is located in the wastewater recovery tank. The input end of the second heat-conducting pipe is connected to the output end of the first heat-conducting pipe, and the output end of the second heat-conducting pipe is connected to the rinsing tank.

9. The dishwasher according to claim 8, characterized in that, The bottom of the wastewater recycling tank is provided with a drain outlet and an overflow pipe surrounding the drain outlet; The overflow pipe has a hollow area that communicates with the drain outlet. The first end of the overflow pipe is connected to the bottom wall of the wastewater recovery tank and a water inlet is provided on the pipe wall at the first end of the overflow pipe. The second end of the overflow pipe has an insertion port that communicates with the hollow area. The wastewater heat recovery device further includes a first overflow rod, the first end of which is provided with an overflow port; the second end of the first overflow rod is detachably disposed in the drain outlet through the insertion port. In the inserted state, the water storage chamber of the wastewater recovery tank is connected to the drain outlet only through the overflow port; When the tank is in the unplugged state, the water storage chamber of the wastewater recovery tank is connected to the drain outlet through the water inlet and / or the insertion port.

10. The dishwasher according to claim 9, characterized in that, The wastewater outlet is located at the top of the main washing tank, and the height of the wastewater outlet is basically the same as that of the first wastewater inlet or the position of the wastewater outlet is higher than that of the first wastewater inlet.

11. The dishwasher according to claim 1, characterized in that, The dishwasher also includes a movable lid, and when the lid is in the closed state, the washing chamber is located between the dishwasher body and the lid; The dishwasher also includes an electromagnet and an iron ingot, one of which is disposed on the dishwasher body and the other is disposed on the lid. When the dishwasher is in a locked state, the electromagnet is energized and attracts the iron ingot to lock the lid in a closed state. When the dishwasher is in the unlocked state, the electromagnet is de-energized to release its attraction from the iron ingot, so that the lid can move relative to the dishwasher body.

12. The dishwasher according to claim 11, characterized in that, The dishwasher body includes a frame, the electromagnet is disposed above the top of the frame, the lid is provided with an iron ingot mounting base, and the iron ingot is disposed at the bottom of the iron ingot mounting base.

13. The dishwasher according to claim 11, characterized in that, The steam heat recovery device also includes an outer casing, on the surface of which grooves are provided; During the process of opening or closing the cover, the electromagnet or iron ingot on the cover can slide in the groove.

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