CN118021232A - Energy-saving dish washer - Google Patents

Abstract

The invention discloses an energy-saving dish washer, which comprises a double-liner water tank, a washing chamber and an arm washing assembly; the double-liner water tank comprises a frame body, a circulating water tank and a waste heat water tank, wherein the circulating water tank and the waste heat water tank are connected with the bottom wall of the frame body, the bottom wall of the frame body is provided with an opening, the waste heat water tank is communicated with the frame body through the opening, and the top of the waste heat water tank is provided with a water tank cover for sealing the opening; the waste hot water tank is provided with a waste hot water inlet and a waste hot water outlet, the waste hot water inlet is connected with a drain pipe of the circulating water tank, a plate heat exchanger for performing heat exchange with waste hot water in the waste hot water tank is arranged in the waste hot water tank, and the plate heat exchanger is provided with a cold water pipe for flowing cold water into the plate heat exchanger and a hot water pipe for flowing hot water out of the plate heat exchanger; the washing arm assembly is arranged in the washing chamber, and the washing chamber is communicated with the top of the frame body. According to the energy-saving dish washer, the waste hot water heat energy is efficiently exchanged and reused in the rinsing water, so that the energy consumption is effectively reduced.

Description

Energy-saving dish washer

Technical Field

The invention relates to the technical field of dish washers, in particular to an energy-saving dish washer.

Background

A dishwasher is an electric appliance for automatically washing dishes, and is widely used in commercial kitchens. Conventional dish washers use circulating water for multiple times during the washing process to ensure thorough cleaning of the dishes. However, some of the problems currently existing include that the water in the circulation tank remains relatively high temperature after the washing of the dishwasher is completed, resulting in waste of energy. In the prior art, a dishwasher generally discharges water in a circulation tank after washing is completed. However, due to the high water temperature during the cleaning process, the discharge of this portion of water resources results in a waste of energy. Therefore, improvements are needed.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide an energy-saving dish washer.

The technical scheme of the invention provides an energy-saving dish washer, which comprises a double-liner water tank, a washing chamber and an arm washing assembly; the double-liner water tank comprises a frame body, a circulating water tank and a waste heat water tank, wherein the circulating water tank and the waste heat water tank are connected with the bottom wall of the frame body, an opening is formed in the bottom wall of the frame body, the waste heat water tank is communicated with the frame body through the opening, and a water tank cover for sealing the opening is arranged at the top of the waste heat water tank; the waste hot water tank is provided with a waste hot water inlet and a waste hot water outlet, the waste hot water inlet is connected with a drain pipe of the circulating water tank, a plate heat exchanger for performing heat exchange with waste hot water in the waste hot water tank is arranged in the waste hot water tank, and the plate heat exchanger is provided with a cold water pipe for cold water to flow into the plate heat exchanger and a hot water pipe for hot water to flow out of the plate heat exchanger; the washing arm assembly is arranged in the washing chamber, and the washing chamber is communicated with the top of the frame body.

Further, a circulating water pipe of the circulating water tank is communicated with the washing chamber.

Further, an upturn is arranged on the periphery of the opening, and extends towards the top of the frame body.

Further, the bottom wall of the frame body is gradually lowered in height from the opening direction toward the circulation tank direction.

Further, the bottom wall of the frame body is provided with an arm washing hole and a satellite hole, the arm washing hole and the satellite hole are penetrated by the rotary water through seat of the arm washing assembly, and part of the periphery of the arm washing hole is parallel to the horizontal plane.

Further, the upper flanging is annular, the upper flanging comprises a first flanging and a second flanging which are oppositely arranged, the first flanging and the second flanging are respectively arranged at positions close to the circulating water tank and far away from the circulating water tank, and the height of the first flanging is larger than that of the second flanging.

Further, the edge of the water tank cover is provided with a lower flanging matched with the upper flanging, and the lower flanging faces the direction of the opening hole and covers and surrounds the upper flanging.

Further, the plate heat exchanger comprises a plurality of heat exchange plates adjacent to each other, each heat exchange plate is integrally formed with a liquid guide channel for liquid to pass through the heat exchange plate, and any two adjacent liquid guide channels are communicated.

Further, the heat exchange plate is provided with a liquid inlet for liquid to flow into the liquid guide channel and a liquid outlet for liquid to flow out of the liquid guide channel, and any two adjacent liquid inlets are communicated with the liquid outlet.

Further, any two adjacent liquid outlets are connected with the liquid inlet through a conveying pipe, one end of the conveying pipe is communicated with the liquid outlet, and the other end of the conveying pipe is communicated with the liquid inlet; or any two adjacent liquid outlets and liquid inlets are respectively connected with a liquid outlet pipe and a liquid inlet pipe, and the liquid outlet pipe and the liquid inlet pipe are connected through reverse threads.

After the technical scheme is adopted, the method has the following beneficial effects:

The energy-saving dish washer effectively reduces energy consumption by efficiently recycling and reutilizing the waste hot water. In the dish washing process, the waste hot water is introduced into the waste hot water tank through the waste hot water inlet and exchanges heat with the plate heat exchanger, so that cold water is heated in the plate heat exchanger and is supplied to other systems and equipment for use. Not only can effectively recycle the heat energy in the waste hot water generated by the dish-washing machine, but also can save energy and improve the heat exchange efficiency. Through the heat exchange process of the waste hot water, the reasonable utilization of energy is realized, so that the dish washer is more environment-friendly and energy-saving in the cleaning process.

Drawings

The present disclosure will become more readily understood with reference to the accompanying drawings. It should be understood that: the drawings are for illustrative purposes only and are not intended to limit the scope of the present invention. In the figure:

FIG. 1 is a schematic view of a structure of an energy-saving dishwasher in accordance with an embodiment of the present invention;

FIG. 2 is an enlarged view at A in FIG. 1;

FIG. 3 is a schematic view of a plate heat exchanger according to an embodiment of the present invention;

FIG. 4 is a schematic view showing the construction of a waste hot water tank and a plate heat exchanger according to an embodiment of the present invention;

FIG. 5 is a schematic view showing the construction of a waste hot water tank and a plate heat exchanger according to an embodiment of the present invention;

FIG. 6 is a schematic view of a plate heat exchanger according to an embodiment of the present invention;

FIG. 7 is a schematic view showing the structure of a front plate of a heat exchange plate according to an embodiment of the present invention;

FIG. 8 is a schematic view of the structure of a back plate of a heat exchange plate according to an embodiment of the present invention;

FIG. 9 is a schematic view of a dual bladder sink and arm wash assembly in accordance with an embodiment of the invention;

FIG. 10 is a schematic view of a water tank cover according to an embodiment of the present invention;

FIG. 11 is a schematic diagram of a dual bladder water tank according to an embodiment of the present invention.

Reference numeral control table:

1. A double-liner water tank; 11. a frame; 12. a bottom wall; 121. opening holes; 1211. up-flanging; 12111. a first flanging; 12112. a second flanging; 122. an arm washing hole; 13. a circulation water tank; 131. a drain pipe; 132. a circulating water pipe; 133. a filter plate; 14. a waste heat water tank; 141. a water tank cover; 1411. a lower flanging is carried out; 142. a waste hot water inlet; 143, a base; a waste hot water outlet; 144. an overflow pipe; 1441. an overflow port; 145. a fixing frame; 2. a washing chamber; 3. an arm washing assembly; 31. rotating the water through seat; 4. a plate heat exchanger; 41. a cold water pipe; 42. a hot water pipe; 43. a heat exchange plate; 431. a liquid guide channel; 432. a liquid inlet; 433. a liquid outlet; 434. a delivery tube; 435. a liquid outlet pipe; 436. a liquid inlet pipe; 437. a fastener; 438. a connecting pipe; 44. a front plate; 45. and a rear plate.

Detailed Description

Specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

It is to be readily understood that, according to the technical solutions of the present invention, those skilled in the art may replace various structural modes and implementation modes with each other without changing the true spirit of the present invention. Accordingly, the following detailed description and drawings are merely illustrative of the invention and are not intended to be exhaustive or to limit the invention to the precise form disclosed.

The terms of orientation such as up, down, left, right, front, rear, front, back, top, bottom, etc. mentioned or possible to be mentioned in this specification are defined with respect to the configurations shown in the drawings, which are relative concepts, and thus may be changed according to the different positions and the different use states of the same. These and other directional terms should not be construed as limiting terms. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between the two components. The above-described specific meanings belonging to the present invention are understood as appropriate by those of ordinary skill in the art.

In some embodiments of the invention, a double-liner water tank 1, a washing chamber 2 and an arm washing assembly 3 are included; the double-liner water tank 1 comprises a frame 11, a circulating water tank 13 and a waste water tank 14, wherein the circulating water tank 13 is connected with a bottom wall 12 of the frame 11, the bottom wall 12 of the frame 11 is provided with an opening 121, the waste water tank 14 is communicated with the frame 11 through the opening 121, and the top of the waste water tank 14 is provided with a water tank cover 141 for closing the opening 121; the waste hot water tank 14 is provided with a waste hot water inlet 142 and a waste hot water outlet, the waste hot water inlet 142 is connected with a drain pipe 131 of the circulating water tank 13, a plate heat exchanger 4 for performing heat exchange with the waste hot water in the waste hot water tank 14 is arranged in the waste hot water tank 14, and the plate heat exchanger 4 is provided with a cold water pipe 41 for cold water to flow into the plate heat exchanger 4 and a hot water pipe 42 for hot water to flow out of the plate heat exchanger 4; the washing arm assembly 3 is arranged in the washing chamber 2, and the washing chamber 2 is communicated with the top of the frame 11; the circulating water pipe 132 at the bottom of the circulating water tank 13 communicates with the washing chamber 2.

Specifically, the frame 11 in the double-liner water tank 1 includes a bottom wall 12, an opening 121 is provided in the bottom wall 12, the circulation water tank 13 is connected to the bottom wall 12 of the frame 11, the waste heat water tank 14 is also connected to the bottom wall 12 of the frame 11, and the waste heat water tank is communicated with the frame 11 through the opening 121 of the bottom wall 12. The waste hot water tank 14 has a tank cover 141 closing the opening 121 at the top. The waste hot water inlet 142 and the waste hot water outlet are located on the waste hot water tank 14, and the waste hot water inlet 142 is connected to the drain pipe 131 of the circulation tank 13. An overflow pipe 143 is provided in the waste hot water tank 14; a waste hot water outlet; 144, overflow pipe 143; a waste hot water outlet; the upper end of 144 is provided with an overflow hole 1441, and the lower end is connected with a waste hot water outlet. The plate heat exchanger 4 is located in the waste hot water tank 14 and exchanges heat with the waste hot water in the waste hot water tank 14. The cold water pipe 41 is connected to the plate heat exchanger 4, into which cold water flows, and the hot water pipe 42 is connected to the plate heat exchanger 4, from which hot water flows. Washing chamber 2: located at the top of the frame 11 and in communication with the top of the frame 11, the wash arm assembly 3 is disposed in the wash chamber 2.

Working principle: the water in the circulation tank 13 is used for washing the dishes in the washing chamber 2 several times when the dishwasher is started. After the washing is finished, the waste hot water tank 14 receives the hot water of the circulating water tank 13 through the waste hot water inlet 142, and in the waste hot water tank 14, the waste hot water exchanges heat with the cold water pipe 41 on the plate heat exchanger 4, the water in the cold water pipe 41 is heated after the heat exchange, and then the water can be guided out from the hot water pipe 42 for washing tableware. The specific working principle is as follows:

1. And in the starting stage, a user starts the dish washer and starts the cleaning process.

2. A main washing step of injecting water into the dish washer and injecting cleaning liquid into the circulating water tank 13; the arm washing assembly 3 is started, the cleaning liquid in the circulating water tank 13 is sprayed into the cleaning water tank through the arm washing assembly 3, the cleaning liquid is sprayed onto the tableware, and the tableware in the cleaning water tank is subjected to main washing. The water after the main washing step enters the circulating water tank 13 again from the top of the circulating water tank 13, and the circulating use of the water is started.

3. And a rinsing step, namely entering a rinsing step, spraying clear water in the arm washing assembly 3 onto the tableware, and rinsing the tableware to ensure that no cleaning liquid remains on the tableware. The water after the rinsing step also enters the circulating water tank 13 from the top of the circulating water tank 13, is mixed with the cleaning liquid of the main washing step, and dilutes the cleaning liquid, so that the water in the circulating water tank 13 can be cleaner.

4. The waste heat water tank 14 exchanges heat, namely, water in the circulating water tank 13 enters the waste heat water tank 14 through a waste heat water inlet 142 in the waste heat water tank 14, the water exchanges heat with the plate heat exchanger 4 in the waste heat water tank 14, the waste heat water is cooled, the heat is transferred to the water in the plate heat exchanger 4, the water heated in the plate heat exchanger 4 can be used later, and the cooled waste heat water is discharged through a waste heat water outlet.

The waste hot water tank 14 is filled with waste hot water from the waste hot water in the dishwasher circulation tank 13, the waste hot water tank 14 is provided with a waste hot water inlet 142 and a waste hot water outlet for guiding the flow of the waste hot water into and out of the waste hot water tank 14, the waste hot water in the dishwasher circulation tank 13 flows into the waste hot water inlet 142 through the drain pipe 131, the waste hot water inlet 142 is responsible for introducing the waste hot water generated by the dishwasher into the waste hot water tank 14, and the waste hot water outlet is responsible for discharging the cooled waste hot water subjected to heat exchange from the waste hot water tank 14. The plate heat exchanger 4 is located in the waste hot water tank 14 and is used for realizing heat exchange between the waste hot water and the cold water, and the plate heat exchanger 4 has a larger heat exchange area so as to improve heat exchange efficiency. The cold water pipe 41 is connected to a cold water source, introduces water into the plate heat exchanger 4, exchanges heat with the hot water, and the hot water pipe 42 is responsible for leading out the water heated after passing through the heat exchanger from the plate heat exchanger 4, supplying other systems and devices requiring hot water, and discharging cooled hot water out of the hot water tank 14 through a hot water outlet. By using the plate heat exchanger 4, the heat exchange area is increased, and the heat exchange efficiency between the waste hot water and the cold water is improved, thereby improving the heat exchange efficiency. The waste heat recovery principle is utilized to effectively recover the heat energy in the waste hot water of the dish-washing machine, and the dish-washing machine is used for heating water required by other systems, so that the energy is saved, the energy consumption is reduced, and the purposes of energy conservation and environmental protection are achieved.

In some embodiments of the present invention, a plurality of heat exchange plates 43 form a surface of the plate heat exchanger 4 for heat exchange, and each heat exchange plate 43 is integrally formed with a liquid guide channel 431. The heat exchanger plates 43 are arranged in a plurality of mutually adjacent plates to form the whole plate heat exchanger 4, and the liquid guide channels 431 are positioned on each heat exchanger plate 43 and communicated with the adjacent liquid guide channels 431, and the heat exchanger plates 43 are mutually adjacent and uniformly arranged at intervals to form the structure of the whole plate heat exchanger 4. The structure of the plurality of heat exchange plates 43 and the liquid guide channels 431 which are adjacent to each other increases the heat exchange area, improves the heat exchange efficiency, and has higher efficiency than the traditional disc heat exchanger, and the design of the plate heat exchanger 4 enables the capacity of the waste heat recovery device to be larger and can treat more waste hot water.

In addition, the heat exchanger plate 43 includes a front plate 44 and a rear plate 45, and the front plate 44 and the rear plate 45 are connected to form the heat exchanger plate 43.

In some embodiments of the present invention, the wavy liquid guiding channels 431 are arranged in a wavy manner, and compared with the planar liquid guiding channels 431, the special structures of the peaks and the troughs make the surface area larger, so that the design can effectively increase the contact area of heat exchange, thereby improving the heat exchange efficiency. The wave structure of the wave-shaped liquid guide channel 431 can increase the resistance and turbulence effect when the fluid flows, so that the turbulence is generated in the channel by the liquid, the heat transfer can be further enhanced by the turbulence flow, the heat exchange efficiency is improved, the irregular structure of the wave-shaped liquid guide channel 431 can cause the speed change of the fluid in the channel and the distortion of the flow path, the heat transfer rate of the fluid and the channel wall is accelerated, and the heat exchange effect is further enhanced.

In some embodiments of the present invention, the liquid inlet 432 is disposed on the heat exchange plate 43, and is used for allowing liquid to flow into the liquid guide channel 431, and is connected to the liquid guide channel 431 to ensure that the liquid smoothly flows into the channel. The liquid outlet 433 is disposed on the heat exchange plate 43, and is used for allowing liquid to flow out of the liquid guide channel 431, and is connected with the liquid guide channel 431 to ensure that liquid flows out of the channel. Both ends of the liquid guide channels 431 on each heat exchange plate 43 are respectively provided with a liquid inlet 432 and a liquid outlet 433, and the liquid guide channels 431 on two adjacent heat exchange plates 43 are communicated through the liquid inlet 432 and the liquid outlet 433 on the two heat exchange plates 43, so that the liquid guide channels 431 on all the heat exchange plates 43 are connected in series.

In some embodiments of the present invention, any two adjacent liquid outlets 433 and liquid inlets 432 are connected by a conveying pipe 434, one end of the conveying pipe 434 is communicated with the liquid outlet 433, and the other end is communicated with the liquid inlet 432. Specifically, two ends of the delivery tube 434 are respectively connected to the liquid inlet 432 and the liquid outlet 433 by welding.

In some embodiments of the present invention, any two adjacent liquid outlets 433 and liquid inlets are respectively connected with a liquid outlet pipe 435 and a liquid inlet pipe 436, the liquid outlet pipe 435 and the liquid inlet pipe 436 are connected by reverse threads, and a fastener 437 is arranged at the connection position.

Specifically, reverse threaded connection provides firm connection, has avoided the pipeline to become flexible or drop, ensures the steady operation of system, and reverse threaded connection can effectively prevent liquid leakage, keeps the leakproofness of system, avoids the energy extravagant.

In some embodiments of the present invention, the cold water pipe 41 is connected to the liquid inlet 432 of one of the heat exchange plates 43. Specifically, the liquid inlet 432 receives cold water input from the cold water pipe 41, and the cold water enters the liquid guide channel 431 to exchange heat through the liquid inlet 432.

In some embodiments of the present invention, the plate heat exchanger 4 may be a vertical plate heat exchanger 4 or a horizontal plate heat exchanger 4, and when the plate heat exchanger 4 is the vertical plate heat exchanger 4, the liquid in the liquid guide channel 431 flows in the vertical direction; when the plate heat exchanger 4 is a horizontal plate heat exchanger 4, the liquid in the liquid-guiding channel 431 flows in the horizontal direction. The user may choose the vertical or horizontal arrangement to accommodate different dishwasher designs or waste hot water tank 14 sizes, as desired.

In some embodiments of the invention, a fixing frame 145 is mounted on the plate heat exchanger 4, and the plurality of heat exchanger plates 43 are fixed together by means of a suitable assembly to ensure that they do not move relative to each other, and the fixing frame 145 is located on the plate heat exchanger 4 to fix the plurality of heat exchanger plates 43 to ensure that they remain in a relatively stable position.

In some embodiments of the present invention, the cold water pipe 41 and the hot water pipe 42 are located on the same side mainly for the convenience of maintenance and replacement. This design does simplify the maintenance process, making it easier for maintenance personnel to access and handle the pipes. Therefore, the maintenance time can be reduced, the maintenance efficiency can be improved, the maintenance cost can be reduced, and the reliability and maintainability of the system can be positively influenced.

In some embodiments of the present invention, the hot water pipe 42 is connected to the liquid outlet 433 of one of the heat exchange plates 43 through a connection pipe 438. The connection pipe 438 is preferably a corrugated pipe, so that the cold water pipe 41 and the hot water pipe 42 are positioned on the same side of the plate heat exchanger 4, and the hot water after heat exchange is originally discharged from the other side of the plate heat exchanger 4, but the cold water pipe 41 and the hot water pipe 42 are positioned on the same side of the plate heat exchanger after the connection pipe 438 is arranged. The pipe layout is simplified, so that the connection between the hot water pipe 42 and the liquid outlet 433 is more convenient. The heat-exchanged hot water flows out through the connection pipe 438, is connected to the liquid outlet 433, and flows out of the heat exchange plate 43. Through the connecting pipe 438 connection for hot-water line 42 and cold-water line 41 are located the same side of plate heat exchanger 4, simplify the pipeline overall arrangement, make the connection of hot-water line 42 and liquid outlet 433 more convenient.

In some embodiments of the present invention, the frame 11 is a main structure of the double-liner water tank 1, the frame 11 includes a bottom wall 12 and a top opposite to the bottom wall 12, an opening 121 is provided on the bottom wall 12, the frame 11 is designed to accommodate the circulation tank 13 and the waste heat tank 14 and ensure that they can be effectively connected and cooperate, the circulation tank 13 is connected to the bottom wall 12 of the frame 11 and forms a tight connection with the frame 11, and the main function of the circulation tank 13 is to store the washed water and guide it through the filter plate 133 to ensure the cleaning of the water quality. The waste heat water tank 14 is connected to the bottom wall 12 of the housing 11, and the waste heat water tank 14 is connected to the housing 11 through the opening 121, and the waste heat of the water after washing is effectively utilized by performing heat exchange of the waste heat water tank 14. The waste heat water tank 14 is connected to the circulation water tank 13 and the frame 11, thereby realizing the cooperative work of the entire system. The upper flange 1211 is designed around the opening 121 in the bottom wall 12 of the housing 11, and the upper flange 1211 extends toward the top of the housing 11, which is advantageous in guiding the water flow through a proper path, and the presence of the upper flange 1211 effectively prevents the unfiltered and circulated water from directly entering the waste heat reservoir 14, which ensures efficient performance of the system operation.

Alternatively, the frame 11 may be rectangular, square, circular or other shape, depending on the overall design and functional requirements of the dual-bladder water tank 1.

In addition, the upturned edge 1211 is a portion of the outer edge of the opening 121 and is turned up to form a rim. The shape of this edge may be an upwardly convex strip extending around the aperture 121 or other form of edge design to ensure that the water flows towards the designed path, the design of the upturned 1211 helping to prevent unfiltered water from entering the waste hot water tank 14 and ensuring the efficiency of the system.

The shape of the opening 121 may be rectangular or square, and accordingly, the shape of the waste heat water tank 14 may be adjusted accordingly.

Working principle and operation steps: the washing water enters the circulating water tank 13 through the filter plate 133 to circulate after the tableware is cleaned in the frame 11, the circulated water enters the waste water tank 14 again to perform heat exchange in the waste water tank 14, waste heat is effectively utilized, finally, the cooled water flow leaves the system, the design of the peripheral upturning 1211 of the opening 121 plays a role in guiding the water flow, the upturning 1211 extends upwards along the periphery of the top and faces the top direction of the frame 11, and the design ensures that the water flow flows along a specified path and is blocked from directly entering the waste water tank 14 through the top without passing through the filtering circulation.

The existing dish washing machine comprises a main washing step and a rinsing step, wherein the main washing step is to wash tableware by using washing liquid, the rinsing step is to wash the tableware by using clear water after the main washing step, the water washed in the main washing step is filtered to enter the circulating water tank 13 and enter the main washing step again, the rinsing water in the rinsing step also enters the circulating water tank 13, the rinsing water is clear water and is mixed with the water washed in the main washing step, so that the tableware is cleaner, and the water enters the main washing step again. However, part of the water in the main washing step and the rinsing step directly enters the waste heat water tank 14 and does not enter the circulating water tank 13, so that the circulating water tank 13 is lack of water, and the circulating water tank 13 is supplemented with water at the moment, so that water resources are wasted. The invention designs the upturned edge 1211, which is helpful for maintaining the water temperature of the circulating water tank 13 and is helpful for the overflow of the waste hot water into the waste hot water tank 14 for heat exchange, reduces the overflow caused by the direct inflow of the circulating water into the waste hot water tank 14, and avoids the waste caused by abnormal water supplement of the circulating water tank 13 due to the water shortage of the circulating water tank 13, thereby saving the water consumption of the dish washer and improving the heat exchange efficiency.

The design has the following technical effects:

1. Reducing the direct inflow of circulating water into the waste hot water tank 14: the design of the upturned edge 1211 effectively prevents water in the main washing step and the rinsing step from directly entering the waste heat water tank 14, and avoids the waste of water resources in the circulating water tank 13. This helps to keep the water level of the circulation tank 13 stable, reducing unnecessary water replenishment operations.

2. Avoiding water shortage of the circulating water tank 13: the upturned 1211 design reduces the risk of water starvation of the circulation tank 13 by preventing water in the main wash step and the rinse step from entering the waste hot water tank 14. This helps to ensure that the circulation tank 13 can maintain a sufficient water level, prevent abnormal water replenishment due to water shortage, and thus reduce waste of water resources.

3. Improving heat exchange efficiency: by optimizing the water quality and water level management of the circulation tank 13, the system more effectively utilizes waste heat generated during the washing and rinsing processes. This helps to improve the heat exchange efficiency in the waste heat tank 14, further reducing the waste of energy.

4. Saving the water consumption of the dish-washing machine: by avoiding unnecessary loss of water resources and excessive replenishment of the circulation tank 13, the system as a whole achieves a saving in water consumption of the dishwasher. This accords with sustainable development concepts of saving resources and improving efficiency.

5. Water filtration and cleaning: the washed water is led through a filter plate 133 on the circulation tank 13. This ensures that the water is subjected to an effective filtration process before entering the waste hot water tank 14, avoiding that unfiltered water directly enters the waste hot water tank 14. Therefore, the system can remove suspended particles, sediments and other impurities more effectively, and improve the cleanliness of the water quality in the waste hot water tank 14.

6. High-efficiency energy utilization: since the washed water enters the circulation water tank 13 to participate in circulation after passing through the filter plate 133 of the circulation water tank 13 and then enters the waste heat water tank 14, the system can more effectively utilize waste heat generated in the cleaning process. The circulation tank 13 functions as recirculation and filtration, ensures a relatively clean state of water before entering the waste heat tank 14 and ensures the circulation of water. This contributes to an improvement in heat exchange efficiency in the waste heat tank 14, thereby improving energy utilization efficiency of the entire system.

In some embodiments of the invention, the height of the upturned 1211 is less than 33mm.

Specifically, the upturn 1211 and the arm washing assembly 3 are both disposed in the cavity of the frame 11, and the design of the upturn 1211 with a height smaller than 33mm plays a role in limiting the height of the upturn 1211, so as to ensure that the arm washing assembly 3 can freely rotate without interference of the upturn 1211, and the design considers interaction of internal components of the system, thereby ensuring that the whole system can operate efficiently.

In some embodiments of the present invention, the waste hot water tank 14 is welded with the upturned 1211 so that the waste hot water tank 14 is mounted to the frame 11. Specifically, such a design may bring about the following technical effects:

1. Providing additional weld support: the presence of the upturned edge 1211 provides an attachment point for welding so that the waste hot water tank 14 can be firmly connected to the bottom wall 12 of the frame 11 by welding. This provides additional support and stability, ensuring that the weld is secure and reliable.

2. Increasing the strength of the connection: by welding at the upturned 1211, the strength of the connection can be increased. This is critical to resist external forces and stresses to which the system may be subjected during operation, thereby improving the overall durability of the system.

3. Simplifying the welding process: the design of the upturned 1211 simplifies the welding process because the weld is located in a relatively easy to access and handle location. This helps to improve the accuracy and efficiency of the weld while reducing the complexity of manufacture and assembly.

4. Preventing loosening of system components: by providing a weld, the upturned 1211 helps prevent the waste hot water tank 14 from loosening during system operation due to vibration or other external factors. This is important for maintaining the robustness of the connection and the reliability of the system.

5. Enhancing the structural integrity of the system: the upturned 1211 provides a fastening point to the hot water reservoir 14, helping to create a more integrated system structure. This structural integrity helps the system better cope with various operating conditions and environmental factors.

In some embodiments of the present invention, the frame 11 is integrally stretched or welded with the circulation tank 13.

Specifically, the frame 11 and the circulation tank 13 are integrally stretched to form a unitary structure, which means that materials of the frame 11 and the circulation tank 13 are stretch-molded during the manufacturing process so that they are structurally connected to each other to form a seamless unit. The method of manufacturing such an integrally stretched double-bladder tub 1 includes forming the materials of the frame 11 and the circulation tank 13 into an integral structure through a stretching process, which may be accomplished by thermoplastic molding, extrusion molding, or other suitable stretching process. Since the frame 11 and the circulation tank 13 are integrally stretched, there is no obvious connection gap or seam between them, which ensures a stronger structure of the water tank and reduces water leakage or structural fatigue problems which may occur due to the connection portions.

In some embodiments of the present invention, a filter plate 133 is provided at the connection surface of the frame 11 and the circulation tank 13.

Specifically, at the connection surface of the frame 11 and the circulation tank 13, a filter plate 133 is provided, and the filter plate 133 may be mounted on the connection surface to ensure that water is filtered before entering the circulation tank 13 from the frame 11, and the filter plate 133 may be detached for cleaning, and the filter material may be a microporous filter screen, a filtering membrane or other suitable filtering structure for preventing solid particles, impurities, etc. from entering the circulation tank 13. The connection of the filter plate 133 to the frame 11 and the circulation tank 13 is tight to ensure that water cannot bypass the filtration process as it passes through the filter plate 133. This may be achieved by welding, bonding or other suitable joining methods. The technical effect of setting the filter plate 133 at the connection surface is that the purity of water quality is improved, and the filtered water can enter the circulating water tank 13 again for washing after entering the circulating work, which is helpful to maintain the high efficiency performance of the system and prolong the service life of the water tank.

In some embodiments of the present invention, the bottom wall 12 of the housing 11 gradually decreases in height from the direction of the opening 121 toward the circulation tank 13.

In particular, the gradually decreasing design of the bottom wall 12 helps to optimize the direction of the water flow, reducing the turbulence or other non-uniform flow that may occur. This improves the efficiency of the system, ensures that water smoothly enters the circulation tank 13 from the bottom wall 12, enters the waste heat tank 14 after the filtration process and the circulation washing process, and finally performs heat exchange.

In some embodiments of the present invention, the bottom wall 12 of the frame 11 is provided with an arm washing hole 122 and a satellite hole for the rotary water passing seat 31 of the arm washing assembly 3 to pass through, and part of the bottom wall 12 of the periphery of the arm washing hole 122 is parallel to the horizontal plane.

Specifically, the arm washing assembly 3 is provided with a rotary water passing seat 31, the bottom wall 12 is provided with an arm washing hole 122 and a satellite hole for the rotary water passing seat 31 to pass through, the periphery of the arm washing hole 122 on the bottom wall 12 is horizontal when needed, and thus the arm washing assembly 3 is conveniently installed on the arm washing hole 122.

In some embodiments of the present invention, the upper flange 1211 is annular, and the upper flange 1211 includes a first flange 12111 and a second flange 12112 that are disposed opposite to each other, the first flange 12111 and the second flange 12112 being disposed at positions near the circulation tank 13 and far from the circulation tank 13, respectively, and the first flange 12111 having a height greater than that of the second flange 12112.

Specifically, the combination of the height difference between the first flange 12111 and the second flange 12112 and the gradually decreasing height of the bottom wall 12 of the frame 11 is designed to cooperatively solve the water flow dynamics and filtering requirements in the system, and if there is no such design, water may bypass the filter plate 133 and directly enter the waste heat water tank 14 due to the height change of the bottom wall 12 of the frame 11, thereby affecting the subsequent heat exchange effect. By the arrangement of the height differences, the water flow is guided to the correct filter path, optimizing the operation of the whole system. If the height of the first turn 12111 is the same as the height of the second turn 12112, the difference in height of the bottom wall 12 of the frame 11 may cause the first turn 12111 to be located at a lower level near the circulation tank 13 than the second turn 12112, which may cause water to easily turn over the first turn 12111 into the opening 121 to directly enter the waste heat tank 14, and if so designed, may cause the tank cover 141 to be non-horizontal.

In some embodiments of the present invention, the top of the waste hot water tank 14 is provided with a water tank cover 141, and the edge of the water tank cover 141 is provided with a lower flange 1411 matched with the upper flange 1211, and the lower flange 1411 faces the direction of the opening 121 and covers and surrounds the upper flange 1211.

Specifically, the water tank cover 141 is used for covering the top of the waste water tank 14, that is, covering the opening 121, so as to ensure the safety and the purity of water during the operation of the system, and the water tank cover 141 provides a relatively closed space for the waste water tank 14, so that the waste water tank 14 can be insulated, the water temperature in the waste water tank 14 can be prevented from falling too fast, and the edge of the water tank cover 141 is provided with a downward flanging 1411, which cooperates with the upward flanging 1211. The lower flange 1411 is matched with the upper flange 1211 to form a complete closed structure, the lower flange 1411 faces the direction of the opening 121 and covers and surrounds the upper flange 1211, the water tank cover 141 is tightly sealed at the top of the waste hot water tank 14, and the lower flange 1411 and the upper flange 1211 cooperate to form a whole closed structure to prevent pollutants and impurities from entering the waste hot water tank 14. When the water tank cover 141 is closed, the lower flange 1411 is tightly fitted with the upper flange 1211 to form a closed structure, preventing external impurities from entering the waste hot water tank 14. The user performs operation and maintenance of the system by opening or closing the water tank cover 141.

In some embodiments of the present invention, the edge of the lower flange 1411 is provided with a connecting edge, one end of the connecting edge is connected to the edge of the upper flange 1211, the other end is abutted against the bottom wall 12 of the frame 11, and the connecting edge is provided with an inclination angle with the bottom wall 12 of the frame 11.

Specifically, the presence of the connecting edge increases the stability of the downward flange 1411, preventing it from loosening or falling out during use. This helps to ensure reliability and durability of the overall system. The abutment of the connecting edge with the bottom wall 12 of the frame 11 forms a sealed connection, helping to prevent external contaminants from entering the system. Thus, the water quality in the system can be maintained clean, impurities are prevented from entering the waste heat water tank 14, and the heat exchange effect is improved. Without the connecting edge, water may more easily enter the opening 121 from between the upper and lower flanges 1211 and 1411, and further, the design of the inclination angle of the connecting edge may make it easier for water on the connecting edge to flow toward the circulation tank 13, reducing water entering the opening 121 and thus directly into the waste heat tank 14.

The invention has the following beneficial technical effects:

1. Efficient performance of system operation: the design of the upturned 1211 effectively prevents unfiltered and circulated water from directly entering the waste hot water tank 14, ensuring that the water flow follows the correct path. This helps the normal operation of system, reduces the influence of impurity to heat exchanger, has improved wholeness ability.

2. Maintenance is convenient and system stability is high: the design of the upturned 1211 reduces the accumulation of impurities during system operation and reduces the frequency of cleaning and maintenance. This improves maintainability of the system while maintaining stability of the system.

3. Connection strength and structural integrity: the waste hot water tank 14 is welded with the upturned 1211, providing additional support and connection strength, increasing the overall structural integrity of the system. This helps to resist external forces and stresses, improving the durability of the system.

4. And (3) integrally stretching and forming design: the frame 11 and the circulation tank 13 are integrally formed by stretching to form a seamless unit. This ensures a stronger structure of the sink, reducing the likelihood of water leakage or structural fatigue.

5. Design of gradually decreasing height of bottom wall 12: the gradual lowering of the bottom wall 12 helps to optimize the direction of the water flow, reduces possible eddies or other uneven flow, and increases the efficiency of the system.

6. Annular upturn 1211 design: the upper flange 1211 is annular and includes a first flange 12111 and a second flange 12112 of varying height to cooperatively address water flow dynamics and filtration requirements. This design avoids water bypassing the filter plate 133 and directly entering the waste hot water tank 14, optimizing the operation of the overall system.

7. The water tank cap 141 and the lower flange 1411 are designed: the top of the waste hot water tank 14 is provided with a tank cover 141, and the edge of the tank cover 141 is provided with a downward flange 1411 matched with the upward flange 1211, so that a complete closed structure is formed. This helps to ensure safety and water purity during system operation.

8. The design of the connecting edge: the connecting edge of the turndown 1411 increases stability, prevents loosening or falling off during use, and helps to ensure the tightness of the waste hot water tank 14.

The energy-saving dish washer effectively reduces energy consumption by efficiently recycling and reutilizing the waste hot water. During dish washing, the waste hot water is introduced into the waste hot water tank 14 through the waste hot water inlet 142, and exchanges heat with the plate heat exchanger 4, so that cold water is heated in the plate heat exchanger 4 and is supplied to other systems and equipment. Not only can effectively recycle the heat energy in the waste hot water generated by the dish-washing machine, but also can save energy and improve the heat exchange efficiency. Through the heat exchange process of the waste hot water, the reasonable utilization of energy is realized, so that the dish washer is more environment-friendly and energy-saving in the cleaning process.

The foregoing is only illustrative of the principles and preferred embodiments of the present invention. It should be noted that several other variants are possible to those skilled in the art on the basis of the principle of the invention and should also be considered as the scope of protection of the present invention.

Claims (10)

1. An energy-saving dish washer is characterized by comprising a double-liner water tank, a washing chamber and an arm washing assembly;

The double-liner water tank comprises a frame body, a circulating water tank and a waste heat water tank, wherein the circulating water tank and the waste heat water tank are connected with the bottom wall of the frame body, an opening is formed in the bottom wall of the frame body, the waste heat water tank is communicated with the frame body through the opening, and a water tank cover for sealing the opening is arranged at the top of the waste heat water tank; the waste hot water tank is provided with a waste hot water inlet and a waste hot water outlet, the waste hot water inlet is connected with a drain pipe of the circulating water tank, a plate heat exchanger for performing heat exchange with waste hot water in the waste hot water tank is arranged in the waste hot water tank, and the plate heat exchanger is provided with a cold water pipe for cold water to flow into the plate heat exchanger and a hot water pipe for hot water to flow out of the plate heat exchanger;

The washing arm assembly is arranged in the washing chamber, and the washing chamber is communicated with the top of the frame body.

2. The energy saving dishwasher of claim 1, wherein a circulation water pipe of the circulation water tank communicates with the washing chamber.

3. The energy saving dishwasher of claim 1, wherein the outer periphery of the opening is provided with an upturn extending toward the top of the frame.

4. The energy saving dishwasher of claim 1, wherein the bottom wall of the frame body is gradually lowered in height from the opening direction toward the circulation tank direction.

5. The double-liner trough according to claim 4, wherein the bottom wall of the frame is provided with an arm washing hole and a satellite hole for the rotary water through seat of the arm washing assembly to pass through, and a part of the bottom wall at the periphery of the arm washing hole is parallel to a horizontal plane.

6. The energy saving dishwasher of claim 5, wherein the upturn is ring-shaped, the upturn comprises a first turn-up rim and a second turn-up rim which are oppositely arranged, the first turn-up rim and the second turn-up rim are respectively arranged at positions close to the circulating water tank and far away from the circulating water tank, and the height of the first turn-up rim is greater than the height of the second turn-up rim.

7. The energy saving dishwasher of claim 1, wherein the edge of the water tank cover is provided with a lower flange cooperating with the upper flange, the lower flange facing the opening direction and covering and surrounding the upper flange.

8. The energy-saving dish washing machine as claimed in claim 1, wherein said plate heat exchanger comprises a plurality of heat exchange plates adjacent to each other, each of said heat exchange plates being integrally formed with a liquid guide passage for passing liquid through said heat exchange plate, any two adjacent said liquid guide passages being in communication.

9. The energy-saving dish washer according to claim 8, wherein the heat exchange plate is provided with a liquid inlet for liquid to flow into the liquid guide channel and a liquid outlet for liquid to flow out of the liquid guide channel, and any two adjacent liquid inlets are communicated with the liquid outlet.

10. The energy-saving dishwasher of claim 9, wherein any two adjacent liquid outlets and liquid inlets are connected through a conveying pipe, one end of the conveying pipe is communicated with the liquid outlet, and the other end of the conveying pipe is communicated with the liquid inlet; or any two adjacent liquid outlets and liquid inlets are respectively connected with a liquid outlet pipe and a liquid inlet pipe, and the liquid outlet pipe and the liquid inlet pipe are connected through reverse threads.