Double-container water tank

Abstract

The double-container water tank comprises a tank body, a main washing water tank and a waste heat water tank, the main washing water tank and the waste heat water tank are connected below the tank body, the main washing water tank and the waste heat water tank are respectively provided with a first opening and a second opening in the direction facing the tank body, and a horizontal overflow pipe is arranged on the side wall of the main washing water tank and communicated with the waste heat water tank. A vertical overflow pipe used for discharging waste hot water to a sewer is arranged in the waste hot water tank, an overflow opening is formed in the upper end of the vertical overflow pipe, and the horizontal overflow pipe is higher than the overflow opening. By arranging the horizontal overflow pipe, the main washing water tank can overflow greasy dirt floating on the liquid level to the waste heat water tank through the horizontal overflow pipe and then discharge the greasy dirt out of the dish-washing machine through the overflow port of the vertical overflow pipe of the waste heat water tank, so that the cleanliness of circulating water in the main washing water tank is improved, the water changing frequency is reduced, the washing degree of the dish-washing machine is higher, and more water and energy are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of dishwashers, in particular to a double-tank water tank. Background Art

[0002] Dishwashers wash dishes in an automated way, which not only saves labor but also provides a more hygienic cleaning effect. The workflow of a dishwasher mainly includes two stages: main wash and rinse. The main wash stage uses high-pressure circulating water to effectively clean food residues and oil stains on the dishes, while the rinse stage uses high-temperature purified water to perform the final cleaning and disinfection of the dishes.

[0003] During the rinsing process of the dishwasher, after the tap water enters the rinse water tank, it is heated by a low-power heating tube, and the water temperature is quickly raised to above 82°C. The rinse pump pumps out the high-temperature water and sprays it on the surface of the tableware through the spray arm. After washing the tableware, the high-temperature rinse water falls back into the main wash water tank, increasing the volume of the circulating water in the main wash water tank. A part of the water in the main wash water tank is pumped out by a large-flow and high-lift main wash pump, and enters the main wash spray arm through the circulating water pipe. The main wash spray arm sprays on the surface of the tableware again to rinse and clean the residue and oil stains on the tableware. The cleaned water flows back to the main wash water tank through the filter screen for recycling; another part of the water in the main wash water tank is discharged through a vertical drain pipe to the waste hot water tank for heat exchange. However, a large amount of oil accumulated on the surface of the main wash water tank is difficult to be discharged from the vertical drain pipe, and affects the water quality and cleaning effect of the circulating water in the circulating water tank. Therefore, improvements are needed. Utility Model Content

[0004] The utility model aims to overcome the deficiencies of the prior art and provide a double-tank water tank.

[0005] The technical solution of the utility model provides a double-tank water tank, comprising a tank body and a main wash tank and a waste hot water tank connected below the tank body, wherein the main wash tank and the waste hot water tank are both provided with a first opening and a second opening in a direction toward the tank body, a side wall of the main wash tank is provided with a horizontal overflow pipe connected to the waste hot water tank, a vertical overflow pipe for discharging waste hot water to a sewer is provided in the waste hot water tank, an overflow port is provided at the upper end of the vertical overflow pipe, and a height of the horizontal overflow pipe is greater than a height of the overflow port.

[0006] Furthermore, the distance between the horizontal overflow pipe and the first opening ranges from 0 to 22 mm.

[0007] Furthermore, the height difference between the horizontal overflow pipe and the overflow port ranges from 0 to 22 mm.

[0008] Furthermore, the tank body, the main wash water tank and the waste water tank are all formed by integral stretching or by separate stretching followed by welding and assembly.

[0009] Furthermore, a filter screen is provided on the first opening, and a cover is provided on the second opening.

[0010] Furthermore, the edge of the second opening is provided with a flange protruding upward, and the cover body cooperates with the flange to seal the second opening.

[0011] Furthermore, a height of the flanged edge at a portion close to the first opening is greater than a height of the flanged edge at a portion away from the first opening.

[0012] Furthermore, a heat exchange tube is provided in the waste hot water tank, and the tap water inlet pipe and the tap water outlet pipe at both ends of the heat exchange tube are both arranged on the waste hot water tank, and the tap water in the heat exchange tube exchanges heat with the waste hot water to output warm water through the tap water outlet pipe.

[0013] Furthermore, the bottom of the waste hot water tank is connected to a waste water drain seat, which includes a second water collecting tank and a second sealed tube arranged at the bottom of the second water collecting tank, the side wall of the second water collecting tank is provided with a waste hot water inlet, the side wall of the second sealed tube is provided with a waste hot water outlet, and the lower end of the vertical overflow pipe is connected to the second sealed tube for sealing the second sealed tube.

[0014] Furthermore, the position of the waste hot water outlet is lower than the position of the waste hot water inlet.

[0015] Furthermore, a vertical drain pipe is provided in the main wash water tank, and a slag drain seat is connected to the bottom of the main wash water tank. The slag drain seat includes a first water collecting tank and a first sealing tube arranged at the bottom of the first water collecting tank. A drain port is provided on the side wall of the first sealing tube, and the lower end of the vertical drain pipe is connected to the first sealing tube for sealing the first sealing tube.

[0016] Furthermore, the drainage port on the slag separator and drainage seat is connected to the waste hot water inlet through a connecting pipe.

[0017] Furthermore, the height of the vertical drain pipe is greater than the height of the horizontal overflow pipe.

[0018] Furthermore, a circulating water pipe is provided on the side wall of the first water collecting tank, and a main wash pump is provided at the other end of the circulating water pipe. When the main wash water tank is working, the main wash pump transports the water in the main wash water tank through the circulating water pipe to the main wash spray arm for circulation.

[0019] Furthermore, the slag drainage seat also includes a slag net, which is connected to the top of the first water collecting tank. When the main wash water tank is working, the water in the main wash water tank passes through the slag net, through the first water collecting tank, into the main wash pump and then into the circulating water pipe under the action of the main wash pump.

[0020] The technical solution of the utility model also provides a dishwasher, comprising any of the double tanks described above.

[0021] After adopting the above technical solution, the following beneficial effects are achieved:

[0022] The utility model provides a horizontal overflow pipe, so that the oil floating on the liquid surface of the main wash water tank can overflow into the waste hot water tank through the horizontal overflow pipe, and then be discharged out of the dishwasher through the overflow port of the vertical overflow pipe of the waste hot water tank, thereby improving the cleanliness of the circulating water in the main wash water tank, reducing the frequency of water changes, and making the dishwasher cleaner and more water-saving and energy-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The disclosure of the present invention will become easier to understand with reference to the accompanying drawings. It should be understood that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In the drawings:

[0024] Figure 1 This is a front view of a double-tank water tank in one embodiment of the utility model;

[0025] Figure 2 It is a three-dimensional diagram of a double-tank water tank at one angle in one embodiment of the utility model;

[0026] Figure 3 It is a three-dimensional diagram of a double-tank water tank from another angle in one embodiment of the utility model;

[0027] Figure 4 It is a cross-sectional view of a double tank water tank at one angle in one embodiment of the utility model;

[0028] Figure 5 It is a cross-sectional view of a double-tank water tank in one embodiment of the utility model from another angle.

[0029] Reference table of reference numerals:

[0030] 1. Trough body; 2. Main wash water trough; 21. First opening; 22. Filter; 23. Vertical drain pipe; 24. Horizontal overflow pipe; 3. Waste water tank; 31. Second opening; 32. Cover; 33. Vertical overflow pipe; 331. Overflow port; 34. Flange; 37. Heat exchange tube; 371. Tap water inlet pipe; 372. Tap water outlet pipe; 4. Connecting pipe; 5. Slag drain seat; 51. First water collecting tank; 511. Circulating water pipe; 52. First sealed pipe; 521. Drain port; 53. Slag screen; 6. Waste water drain seat; 61. Second water collecting tank; 611. Waste water inlet; 62. Second sealed pipe; 621. Waste water outlet. DETAILED DESCRIPTION

[0031] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings.

[0032] It is easy to understand that according to the technical solution of the utility model, without changing the essential spirit of the utility model, a variety of structural modes and implementation modes can be replaced by those skilled in the art. Therefore, the following specific implementation methods and drawings are only exemplary descriptions of the technical solution of the utility model, and should not be regarded as the entirety of the utility model or as a limitation or restriction on the technical solution of the utility model.

[0033] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. They are relative concepts and may change accordingly according to their different positions and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above-mentioned in the present utility model can be understood according to the specific circumstances.

[0035] In some embodiments of the utility model, the double-tank water sink includes a sink body 1 and a main wash sink 2 and a waste hot water tank 3 connected below the sink body 1. The main wash sink 2 and the waste hot water tank 3 are both provided with a first opening 21 and a second opening 31 facing the sink body 1. The first opening 21 is provided with a filter screen 22, and the second opening 31 is provided with a cover body 32. The bottom wall and side walls of the main wash sink 2 are respectively provided with a vertical drain pipe 23 and a horizontal overflow pipe 24 connected to the waste hot water tank 3. The waste hot water tank 3 is provided with a vertical overflow pipe 33 for discharging waste hot water to the sewer, and an overflow port 331 is provided at the upper end of the vertical overflow pipe 33. The height of the horizontal overflow pipe 24 is greater than the height of the overflow port 331.

[0036] Specifically, during the operation of the dishwasher, the main wash tank 2 is used to wash the dishes. The vertical drain pipe 23 on the bottom wall of the main wash tank 2 is used to discharge part of the water to the sewer. The horizontal overflow pipe 24 on the side wall of the main wash tank 2 plays a key role. Since its height is higher than the overflow port 331 of the vertical overflow pipe 33 in the waste hot water tank 3, the liquid level in the main wash tank is always higher than the surface of the waste hot water tank 3. When waste hot water containing impurities such as oil and dirt accumulates in the main wash tank 2, these waste hot water will overflow into the waste hot water tank 3 through the horizontal overflow pipe 24 due to the gradual increase in the liquid level. Such a design utilizes the buoyancy principle of water, so that the oil and dirt floating on the liquid surface of the main wash tank 2 can be taken away by the horizontal overflow pipe 24 first. The waste hot water entering the waste hot water tank 3 will be further discharged to the sewer outside the dishwasher through the vertical overflow pipe 33 in the waste hot water tank 3 and the overflow port 331 at its upper end. In this way, impurities such as oil in the main wash tank 2 that are difficult to discharge through the vertical drain pipe 23 are transferred to the waste hot water tank 3 and discharged, thereby improving the cleanliness of the circulating water in the main wash tank 2 and reducing the need for frequent water changes due to deterioration of water quality, ultimately achieving the effect of higher cleaning efficiency, more water saving and more energy saving in the dishwasher.

[0037] In some embodiments of the present invention, the distance between the horizontal overflow pipe 24 and the first opening 21 ranges from 0 to 22 mm.

[0038] Specifically, the appropriate distance can ensure that the water containing oil has a certain flow path and time before reaching the horizontal overflow pipe 24. When the water level in the main washing water tank 2 rises, since the horizontal overflow pipe 24 maintains a certain distance from the first opening 21, the impurities such as oil have enough time and space to separate and gather during the flow of water. When the water reaches the horizontal overflow pipe 24, most of the oil has gathered near the liquid surface, so that it can overflow to the waste hot water tank 3 through the horizontal overflow pipe 24 more efficiently, while reducing the interference with the normal filtering function of the filter screen 22 of the first opening 21, maintaining the stable operation of the entire system and a good water treatment effect.

[0039] In some embodiments of the present invention, the height difference between the horizontal overflow pipe 24 and the overflow port 331 ranges from 0 to 22 mm.

[0040] Specifically, when the water level in the main wash tank 2 gradually rises due to the continuous accumulation of water containing impurities such as oil, the water will first reach the position of the horizontal overflow pipe 24 because the height of the horizontal overflow pipe 24 is higher than the overflow port 331 by a certain range. In this process, due to the effect of buoyancy, impurities such as oil floating on the water surface are more likely to enter the horizontal overflow pipe 24 first and be drained to the waste hot water tank 3. When the water level continues to rise to a level higher than the horizontal overflow pipe 24 but has not overflowed the main wash tank 2, the water will overflow into the waste hot water tank 3 through the horizontal overflow pipe 24. When the water level in the waste hot water tank 3 rises to the height of the overflow port 331, the water will be discharged to the sewer through the overflow port 331. This height difference setting ensures, on the one hand, that impurities such as grease can be effectively transferred from the main wash water tank 2 to the waste hot water tank 3; on the other hand, it also controls the flow path and sequence of water, thereby ensuring the treatment effect of the entire system on impurities such as grease, thereby achieving the goals of improving the cleanliness of the circulating water in the main wash water tank and reducing the frequency of water changes, thereby enabling the dishwasher to operate more efficiently and energy-efficiently.

[0041] In some embodiments of the utility model, the tank body 1, the main washing water tank 2 and the waste hot water tank 3 are all formed by integral stretching or by separate stretching followed by welding and splicing.

[0042] Specifically, the tank body 1, the main wash tank 2 and the waste water tank 3 are manufactured into an integral structure through an integrated stretching process. This integrated stretching molding is to use a specific mold and stretching process to stretch and deform the raw materials (usually metal plates, etc.) to form a combination of the tank body 1, the main wash tank 2 and the waste water tank 3 with a specific shape and size. Integrated molding avoids the problem of loose connection that may be caused by splicing multiple parts, making the structure of the entire device more stable and better able to withstand various forces during the operation of the dishwasher. It can also reduce the gaps between components, reduce the possibility of problems such as leakage, ensure the normal operation of the internal water system of the dishwasher, and also help maintain the water level and water pressure of each water tank. Compared with the method of manufacturing and assembling separately, integrated stretch molding simplifies the manufacturing process, improves production efficiency, and reduces production costs. Such a design is conducive to the transmission and distribution of force, and enhances the overall reliability and durability of the dishwasher.

[0043] In some embodiments of the present invention, an edge of the second opening 31 is provided with a flange 34 protruding upward, and the cover 32 cooperates with the flange 34 to seal the second opening 31 .

[0044] Specifically, an upwardly protruding flange 34 is provided at the edge of the second opening 31. When the cover 32 is placed on the flange 34, the cover 32 is in close contact with the flange 34, and a sealing structure is formed by mutual extrusion and adhesion between the two, thereby effectively sealing the second opening 31. The existence of the flange 34 increases the contact area between the cover 32 and the opening, and the seal is more reliable, which can effectively prevent water from entering the waste hot water tank 3 from the second opening 31. The upwardly protruding flange 34 provides a clear position and guide for the placement and operation of the cover 32, making the opening and closing operation of the cover 32 simpler and more accurate.

[0045] In some embodiments of the present invention, the height of the flange 34 close to the first opening 21 is greater than the height of the flange 34 far from the first opening 21 .

[0046] Specifically, when the cover 32 cooperates with the flange 34 to seal the second opening 31, since the flange 34 close to the first opening 21 is of greater height, and the flange 34 far from the first opening 21 is of less height, an inclined structure is formed. In actual use, more liquid will try to enter the first opening 21 from the flange 34 close to the first opening 21, and the higher flange 34 close to the first opening 21 can provide a stronger blocking effect, form a better sealing effect and save costs.

[0047] In some embodiments of the utility model, a heat exchange tube 37 is provided in the waste hot water tank 3, and the tap water inlet pipe 371 and the tap water outlet pipe 372 at both ends of the heat exchange tube 37 are both arranged on the waste hot water tank 3, and the tap water in the heat exchange tube 37 exchanges heat with the waste hot water to output warm water through the tap water outlet pipe 372.

[0048] Specifically, by providing the heat exchange tube 37, the heat in the waste hot water is recycled and utilized, the energy utilization efficiency is improved, and the output warm water can be used for multiple purposes, such as being used in other links that require warm water, saving energy to a certain extent; at the same time, this heat exchange design also reduces heat waste, which is in line with the concept of energy conservation and environmental protection. For example, in actual applications, the warm water from the heat exchange tube 37 can be used in some cleaning steps of the dishwasher itself that require warm water, or can be supplied to other equipment or occasions that require warm water, achieving effective utilization of energy.

[0049] In some embodiments of the utility model, a slag drain seat 5 for draining and separating slag is provided at the bottom of the main wash water tank, and a wastewater drain seat 6 at the bottom of the waste heat recovery device is provided. The slag drain seat 5 and the wastewater drain seat 6 are external devices of the main wash water tank and the waste heat recovery device, respectively, and the two drain seats are connected through a connecting pipe 4. When the dishwasher finishes working, it is necessary to drain all the waste hot water in the main wash water tank and the waste hot water in the waste heat recovery device. At this time, it is necessary to pull up the vertical drain pipe 23 in the main wash water tank and the vertical overflow pipe 33 in the waste hot water tank 3, so that the waste hot water in the main wash water tank will flow through the connecting pipe 4 to the wastewater drain seat 6 at the bottom of the waste hot water tank 3, and then be discharged to the sewer through the waste hot water outlet 621 on the wastewater drain seat 6. When the dishwasher is working, the main wash water tank transports the waste hot water to the waste hot water recovery device through the horizontal overflow pipe 24 to exchange heat with the heat exchange pipe 37. Since the last step of each dishwashing operation requires washing with clean water, that is, the water in the rinsing arm will enter the main wash water tank, which will cause the water level in the main wash water tank to rise until the liquid level exceeds the opening of the horizontal overflow pipe 24 in the main wash water tank. The waste hot water overflows into the waste hot water tank 3 through the horizontal overflow pipe 24, and the water level in the waste hot water tank 3 also rises accordingly. When the liquid level in the waste hot water tank 3 exceeds the overflow port 331 of the vertical overflow pipe, the low-temperature water that has absorbed the residual heat by the heat exchange pipe 37 overflows into the sewer through the overflow port 331 of the vertical overflow pipe.

[0050] During the operation of the dishwasher, the waste hot water in the main wash water tank is first effectively drained into the waste hot water tank 3 through the horizontal overflow pipe. At the same time, the waste hot water is also introduced into the main wash spray wall through the circulating water pipe 511 in the working process of the dishwasher to realize the recycling of water resources. Specifically, under the promotion of the main wash pump, the waste hot water is first finely filtered through the slag screen 53 installed at the upper end of the slag screen drain seat 5 to ensure the purity of the water quality. Subsequently, the filtered waste hot water flows into the circulating water pipe 511 at the lower end of the slag screen drain seat 5, and then enters the main wash spray arm. In this process, the main wash spray arm uses the water again to wash the tableware. After washing, the water passes through the filter screen 22 again and enters the main wash water tank, ready for the next recycling. This circulation process is designed to improve the efficiency of water resource utilization while ensuring the cleanliness of the tableware. Specifically, a portion of the water in the main wash tank 2 is drawn into the circulating water pipe 511 by the action of the high-flow and high-lift main wash pump, and then transported to the main wash spray arm through the circulating water pipe 511, and then sprayed out from the main wash spray arm to rinse and clean the tableware. The circulating water pipe 511 allows the water in the main wash water tank to circulate continuously in the system, maintaining the continuous cleaning ability of the tableware and improving the cleaning efficiency. The circulating water filtered by the filter 22 enters the main wash water tank again, ensuring the relative cleanliness of the circulating water, which helps to improve the cleaning effect of the tableware, so that the tableware can be cleaned more cleanly, thereby improving the cleanliness of the dishwasher. Due to the recycling of water, the frequency of water changes is reduced, which also plays a role in energy saving to a certain extent, reducing the cost of the entire dishwasher operation.

[0051] In addition, during the operation of the dishwasher, the liquid level in the waste hot water tank 3 will remain inside and will not flow out before reaching the overflow port 331 provided on the vertical overflow pipe 33. Once the liquid level in the waste hot water tank 3 exceeds the overflow port 331, the waste hot water will enter from the overflow port 331, flow through the vertical overflow pipe 33, and finally be discharged into the waste hot water outlet 621 through the opening at the bottom end of the vertical overflow pipe 33.

[0052] In some embodiments of the utility model, a vertical drain pipe 23 is provided in the main wash water tank, and a slag separation drain seat 5 is connected to the bottom of the main wash water tank. The slag separation drain seat 5 includes a first water collecting tank 51 and a first sealing tube 52 arranged at the bottom of the first water collecting tank 51. A drain port 521 is provided on the side wall of the first sealing tube 52. The lower end of the vertical drain pipe 23 is plugged into the first sealing tube 52 to seal the first sealing tube 52. A circulating water pipe 511 is provided on the side wall of the first water collecting tank 51. A main wash pump is provided at the other end of the circulating water pipe 511. When the main wash water tank is working, the main wash pump transports the water in the main wash water tank through the circulating water pipe 511 to the main wash spray arm for recycling. The slag separation drain seat 5 also includes a slag separation net 53. The slag separation net 53 is connected to the top of the first water collecting tank 51. When the main wash water tank is working, the water in the main wash water tank passes through the slag separation net 53 and the first water collecting tank 51 under the action of the main wash pump and then enters the circulating water pipe 511.

[0053] Specifically, the design of the slag separation and drainage seat 5 includes three main components: a slag separation net 53, a first water collection tank 51, and a first sealing tube 52, which are tightly connected from top to bottom. A slag separation net 53 is cleverly arranged between the cavity of the main wash water tank and the first water collection tank 51 to ensure that the waste hot water can be effectively filtered when flowing through, and then smoothly enter the first water collection tank 51. The cavity of the main wash water tank, the cavity of the first water collection tank 51, and the cavity of the first sealing tube 52 are interconnected to form a smooth liquid channel.

[0054] The vertical drain pipe 23 first passes through the slag screen 53, then passes through the cavity of the first water collecting tank 51, and finally is accurately inserted into the first sealing tube 52, ensuring that it matches the shape of the first sealing tube 52 and is tightly connected by interference fit. This design is intended to prevent water from leaking from the gap between the first sealing tube 52 and the vertical drain pipe 23 when the dishwasher is working, ensuring that water can only flow out from the drain port 521 on the side wall of the first sealing tube 52, thereby maintaining the normal operation of the dishwasher.

[0055] When the dishwasher finishes working, the vertical drain pipe 23 can be easily taken out from the first sealed tube 52. At this time, water can pass through the first water collecting tank 51 and the first sealed tube 52 in sequence, and finally be discharged from the drain port 521 on the side wall of the first sealed tube 52, realizing a convenient drainage function. When the dishwasher is in working state, the waste hot water in the first water collecting tank 51 flows out through the circulating water pipe 511 on the side wall of the first water collecting tank 51 only under the action of the main washing pump, and participates in the water circulation process of the dishwasher. At this time, since the vertical drain pipe 23 has been inserted into the first sealed tube 52, the first sealed tube 52 at the bottom of the first water collecting tank 51 is effectively blocked, ensuring that water can only flow out from the circulating water pipe 511 according to the designed path, maintaining the stable operation of the dishwasher.

[0056] In some embodiments of the utility model, the bottom of the waste water tank 3 is connected to a waste water drain seat 6, which includes a second water collecting tank 61 and a second sealing pipe 62 arranged at the bottom of the second water collecting tank 61, a waste water inlet 611 is arranged on the side wall of the first water collecting tank 51, a waste water outlet 621 is arranged on the side wall of the second sealing pipe 62, an overflow port 331 is arranged at the upper end of the vertical overflow pipe 33, and the lower end is plugged with the second sealing pipe 62 to seal the second sealing pipe 62. The drain port 521 on the slag drain seat 5 is connected to the waste water inlet 611 through the connecting pipe 4.

[0057] Specifically, the vertical overflow pipe 33 is a pipe or device, which is usually used to discharge or guide liquid. The overflow port 331 is an opening on the vertical overflow pipe 33. When the liquid exceeds its designed capacity, the excess liquid can flow out through the overflow port 331. The function of this overflow port 331 is to monitor the liquid level of the waste hot water. When the liquid level of the waste hot water gradually rises and reaches or even exceeds the height of the overflow port 331, the system will automatically start the discharge procedure. This design effectively avoids the risk of overflow of waste hot water caused by excessively high liquid levels, thereby ensuring the normal operation of the system.

[0058] In addition, the waste hot water drain seat includes two components, the second water collecting tank 61 and the second sealing tube 62, which are closely connected to form a smooth passage. Among them, the cavity of the waste hot water tank 3, the cavity of the second water collecting tank 61 and the cavity of the second sealing tube 62 are all connected to each other from top to bottom. The vertical overflow pipe 33 is designed to be located in the cavity of the waste hot water tank 3 at the top, and to pass through the cavity of the second water collecting tank 61 at the bottom, and finally inserted into the second sealing tube 62.

[0059] During normal operation of the dishwasher, the second sealing tube 62 forms a tight interference fit with the vertical overflow pipe 33, ensuring that the vertical overflow pipe 33 effectively blocks the second sealing tube 62, thereby preventing the water in the second water collecting tank 61 from flowing out through the small gap between the two. At this time, the waste hot water can only be discharged through the overflow port 331. Specifically, when the dishwasher is in operation, excess water will flow into the cavity of the overflow pipe through the overflow port 331, then pass through the overflow pipe orifice, and finally be discharged smoothly through the waste hot water outlet 621 on the side wall of the second sealing tube 62.

[0060] When the dishwasher is finished working, the vertical overflow pipe 33 will be pulled out from the second sealed pipe 62, and the vertical overflow pipe 33 will no longer block the second sealed pipe 62. At this time, the water will flow through the second water collecting tank 61 and the second sealed pipe 62 in sequence, and finally be discharged through the waste hot water outlet 621 on the side wall of the second sealed pipe 62. At the same time, the drain port 521 on the first sealed pipe 52 and the waste hot water inlet 611 on the second water collecting tank 61 are connected through a special connecting pipe 4. When the dishwasher is finished working, the vertical drain pipe 23 will be taken out from the first sealed pipe 52, and the vertical overflow pipe 33 will also be taken out from the second sealed pipe 62. At this time, the water in the main washing water tank will flow through the first water collecting tank 51, the first sealed pipe 52, the drain port 521, the waste hot water inlet 611, the second water collecting tank 61, the second sealed pipe 62 in sequence, and finally be discharged from the waste hot water outlet 621 on the side wall of the second sealed pipe 62.

[0061] In some embodiments of the present invention, the position of the horizontal overflow pipe 24 is higher than the position of the overflow port 331 .

[0062] Specifically, a first opening 21 is provided on one side wall of the main wash water tank, and a second opening 31 is provided at a corresponding position of the waste hot water tank 3. The two openings are arranged correspondingly and are located at the same horizontal plane, so as to ensure that the liquid can accurately overflow from the main wash water tank to the waste hot water tank 3 through the horizontal overflow pipe 24. In addition, in order to ensure the smooth flow of the fluid, a horizontal overflow pipe 24, such as a pipe or a conduit, is installed between the two openings to ensure that the liquid can pass smoothly. The positions of the two openings are both arranged at a higher position than the overflow port 331, so as to ensure that the highest liquid level in the waste hot water tank 3 will not exceed the opening, and the liquid in the waste hot water tank 3 is prevented from flowing back into the main wash water tank. The floating oil impurities on the surface of the liquid in the main wash water tank directly flow into the waste hot water tank 3, so as to avoid these floating oil impurities from participating in the water circulation of the main wash water tank in the main wash water tank. This method makes the circulating water in the main wash water tank cleaner, is conducive to the recycling of water in the main wash water tank, and improves the washing effect and the practicality of the equipment.

[0063] In some embodiments of the present invention, the location of the waste hot water outlet 621 is lower than the location of the waste hot water inlet 611 .

[0064] Specifically, the position of the waste hot water outlet 621 is lower than the position of the waste hot water inlet 611, which can ensure that the waste hot water can flow out of the water collecting tank smoothly and avoid water accumulation.

[0065] In some embodiments of the present invention, the height of the vertical drain pipe 23 is greater than the height of the horizontal overflow pipe 24 .

[0066] Specifically, in order to ensure that the staff can more conveniently remove the vertical drain pipe 23, the design adopts an appropriate height setting. Under this layout, the liquid level in the main wash water tank is always kept below the height of the horizontal overflow pipe 24, thereby effectively ensuring that the height of the vertical drain pipe 23 is higher than the horizontal overflow pipe 24. This design allows the top of the vertical overflow pipe 33 to be higher than the liquid level in the main wash water tank, which is not only convenient for the staff to carry out the removal operation, but also effectively prevents the staff from being scalded by contact with high-temperature liquid during the operation, and prevents the arms from being contaminated by the liquid.

[0067] In some embodiments of the present invention, the dishwasher includes the double tank in any one of the above embodiments.

[0068] The utility model provides a horizontal overflow pipe 24, so that the oil floating on the liquid surface of the main wash water tank can overflow to the waste hot water tank 3 through the horizontal overflow pipe 24, and then be discharged out of the dishwasher through the overflow port 331 of the vertical overflow pipe 33 of the waste hot water tank 3, thereby improving the cleanliness of the circulating water in the main wash water tank, reducing the frequency of water replacement, and making the dishwasher cleaner and more water-saving and energy-saving.

[0069] The above are only the principles and preferred embodiments of the present invention. It should be noted that, for those skilled in the art, on the basis of the principles of the present invention, several other modifications can be made, which should also be considered as the protection scope of the present invention.

Claims

1. A double tank water tank, characterized in that: The utility model comprises a trough body, a main wash water trough and a waste hot water tank connected below the trough body, wherein the main wash water trough and the waste hot water tank are both provided with a first opening and a second opening in the direction toward the trough body, a side wall of the main wash water trough is provided with a horizontal overflow pipe connected with the waste hot water tank, a vertical overflow pipe for discharging waste hot water to a sewer is provided in the waste hot water tank, an overflow port is provided at the upper end of the vertical overflow pipe, and the height of the horizontal overflow pipe is greater than the height of the overflow port.

2. The double tank water tank according to claim 1, characterized in that: The distance between the horizontal overflow pipe and the first opening ranges from 0 to 22 mm.

3. The double tank water tank according to claim 1, characterized in that: The height difference between the horizontal overflow pipe and the overflow port ranges from 0 to 22 mm.

4. The double tank water tank according to claim 1, characterized in that: The tank body, the main washing water tank and the waste hot water tank are formed by integral stretching or by welding and splicing after separate stretching.

5. The double tank water tank according to claim 1, characterized in that: A filter screen is provided on the first opening, and a cover body is provided on the second opening.

6. The double tank water tank according to claim 5, characterized in that: The edge of the second opening is provided with a flange protruding upward, and the cover body cooperates with the flange to seal the second opening.

7. The double tank water tank according to claim 6, characterized in that: The height of the flanged edge at a portion close to the first opening is greater than the height of the flanged edge at a portion away from the first opening.

8. The double tank water tank according to claim 1, characterized in that: The waste hot water tank is provided with a heat exchange tube, and the tap water inlet pipe and the tap water outlet pipe at both ends of the heat exchange tube are both arranged on the waste hot water tank. The tap water in the heat exchange tube exchanges heat with the waste hot water and outputs warm water through the tap water outlet pipe.

9. The double tank water tank according to claim 1, characterized in that: The bottom of the waste hot water tank is connected to a waste hot water drain seat, which includes a second water collecting tank and a second sealed pipe arranged at the bottom of the second water collecting tank. The side wall of the second water collecting tank is provided with a waste hot water inlet, and the side wall of the second sealed pipe is provided with a waste hot water outlet. The lower end of the vertical overflow pipe is plugged into the second sealed pipe for sealing the second sealed pipe.

10. The double tank water tank according to claim 9, characterized in that: The position of the waste hot water outlet is lower than the position of the waste hot water inlet.

11. The double tank water tank according to claim 9, characterized in that: A vertical drain pipe is provided in the main wash water tank, and a slag drain seat is connected to the bottom of the main wash water tank. The slag drain seat includes a first water collecting tank and a first sealing tube arranged at the bottom of the first water collecting tank. A drain port is provided on the side wall of the first sealing tube, and the lower end of the vertical drain pipe is connected to the first sealing tube for sealing the first sealing tube.

12. The double tank water tank according to claim 11, characterized in that: The drainage port on the slag separation and drainage seat is connected with the waste hot water inlet through a connecting pipe.

13. The double tank water tank according to claim 11, characterized in that: The height of the vertical drain pipe is greater than the height of the horizontal overflow pipe.

14. The double tank water tank according to claim 11, characterized in that: A circulating water pipe is provided on the side wall of the first water collecting tank, and a main wash pump is provided at the other end of the circulating water pipe. When the main wash water tank is working, the main wash pump transports the water in the main wash water tank through the circulating water pipe to the main wash spray arm for circulation.

15. The double tank water tank according to claim 14, characterized in that: The slag separator and drain seat also includes a slag separator net, which is connected to the top of the first water collecting tank. When the main wash water tank is working, the water in the main wash water tank passes through the slag separator net, the first water collecting tank, the main wash pump and then the circulating water pipe under the action of the main wash pump.

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