Thermal cycle energy saving dishwasher
By incorporating a circulation chamber and evaporator into the dishwasher, the hot air after drying is used to heat the rinsing water, thus solving the problem of unused residual heat from hot air drying, achieving energy savings, and reducing the overall energy consumption of the machine.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG DIVOS ELECTRIC CO LTD
- Filing Date
- 2025-07-17
- Publication Date
- 2026-06-05
AI Technical Summary
The heating systems of the high-temperature rinsing and hot air drying processes in existing dishwashers are independent of each other, resulting in the waste of residual heat after hot air drying not being recovered and utilized. High-temperature rinsing requires a lot of energy, causing energy waste and high energy consumption.
A heat-circulating energy-saving dishwasher is designed. By setting a circulation chamber and evaporator at the top of the drying chamber, the dried hot air is used to heat the water in the rinsing chamber, realizing heat interaction and reducing rinsing energy consumption.
Effective recovery of residual heat from drying for high-temperature rinsing reduces heating pressure, improves water evaporation efficiency, and significantly reduces the overall energy consumption of the dishwasher.
Smart Images

Figure CN224320677U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of dishwashers, and more particularly to a heat-circulating energy-saving dishwasher. Background Technology
[0002] The Changlong dishwasher is a core piece of equipment for the catering industry to achieve efficient tableware cleaning. Its cleaning process usually includes multiple key steps such as pre-wash, main wash, high-temperature rinsing and hot air drying, which can remove food residue, clean and dry tableware at high temperature, achieving the effect of quickly cleaning tableware.
[0003] However, in existing technologies, the heating systems of the high-temperature rinsing and hot air drying processes in dishwashers are independent of each other and lack heat interaction design. As a result, after the heating mechanism of the hot air drying process heats the air to dry it, a large amount of residual heat in the air is directly discharged without being recovered and cannot be used in the high-temperature rinsing process, resulting in energy waste. On the other hand, the heating mechanism of the high-temperature rinsing process needs to consume a lot of energy to heat the water into steam, resulting in high energy consumption. This dual energy loss significantly affects the overall energy consumption performance of the machine. Utility Model Content
[0004] To address the problems mentioned above, this utility model provides a heat-circulating energy-saving dishwasher that enables heat exchange between hot air drying and high-temperature rinsing processes. This allows for full utilization of the heat energy from the hot air drying process to heat the water during the high-temperature rinsing, achieving energy-saving effects and significantly reducing the overall energy consumption of the dishwasher.
[0005] The solution adopted by this utility model to solve its technical problem is: a heat-circulating energy-saving dishwasher, comprising:
[0006] A rinsing chamber is provided with a rinsing assembly. At the bottom of the rinsing chamber is a first heating assembly for heating water and converting it into water vapor. The first heating assembly is connected to the rinsing assembly.
[0007] A drying chamber, wherein a fan is provided on the top of the drying chamber, and an air outlet connected to the output end of the fan is opened at the top of the drying chamber, and a second heating component for heating air is provided at the air outlet;
[0008] A circulation chamber is located on one side of the top of the drying chamber. The top of the drying chamber has a communication port that communicates with the circulation chamber. An evaporator is installed inside the circulation chamber and covers the communication port. The evaporator is connected to the first heating component.
[0009] Furthermore, the top of the circulation chamber is provided with an exhaust box, the bottom of the exhaust box is provided with an exhaust port communicating with the circulation chamber, and the exhaust box is provided with an exhaust assembly.
[0010] Furthermore, the exhaust assembly includes an exhaust motor and a fan wheel connected to the output end of the exhaust motor. The fan wheel is located on the exhaust port, and the side of the fan wheel used for exhaust corresponds to the exhaust port.
[0011] Furthermore, both the exhaust vent and the connecting port are elongated.
[0012] Furthermore, an air guide plate is provided at the position corresponding to the air outlet inside the drying chamber. The air guide plate has a "V" shaped cross-section, and one inclined surface of the air guide plate corresponds to the connecting opening.
[0013] Furthermore, an air collection box is provided at the top of the drying chamber, corresponding to the inclined side of the other side of the air guide plate. The air collection box is connected to the drying chamber, and the input end of the fan is connected to the air collection box.
[0014] Furthermore, a guide hood is provided at the location of the air collection box inside the drying chamber, and the opening of the guide hood corresponds to the inclined surface of the air guide plate.
[0015] Furthermore, the rinsing chamber and the drying chamber are connected in sequence, the circulation chamber is located on the top of the drying chamber near the rinsing chamber, and an isolation curtain is provided at the junction of the rinsing chamber and the drying chamber.
[0016] In summary, the beneficial effects of this utility model are as follows: By setting a circulation chamber at the top of the drying chamber and communicating with the drying chamber, and simultaneously setting an evaporator connected to the first heating component in the circulation chamber, the hot air in the drying chamber after drying can enter the circulation chamber to heat the evaporator. This allows the water in the evaporator to be heated by the residual heat of drying and then input into the first heating component, which can reduce the heating pressure of the first heating component, thereby improving the evaporation efficiency of water, reducing rinsing energy consumption, and achieving energy saving.
[0017] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of this embodiment;
[0019] Figure 2 This is a cross-sectional view of the drying chamber in this embodiment;
[0020] Figure 3 This is a schematic diagram of the internal structure of the rinsing and drying chambers in this embodiment;
[0021] Figure 4This is a structural schematic diagram of the rinsing chamber and drying chamber from another angle in this embodiment.
[0022] In the diagram: 1. Rinse chamber; 11. Rinse assembly; 12. First heating assembly; 2. Drying chamber; 21. Fan; 22. Second heating assembly; 23. Connecting port; 24. Air guide plate; 3. Circulation chamber; 4. Evaporator; 5. Exhaust box; 51. Exhaust port; 6. Exhaust assembly; 61. Exhaust motor; 62. Fan wheel; 7. Air collection box; 8. Air guide hood; 9. Isolation curtain. Detailed Implementation
[0023] To make the content of this utility model easier to understand, the present utility model will be further described below with reference to specific embodiments and accompanying drawings.
[0024] It should be noted that the terms "center," "upper," "lower," "front," "rear," "left," "right," "inner," and "outer" used herein to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Unless otherwise stated, "a plurality of" means two or more.
[0025] Unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0026] like Figures 1 to 3As shown, a heat-circulating energy-saving dishwasher can achieve heat interaction between hot air drying and high-temperature rinsing processes, thereby fully utilizing the heat energy in the hot air drying process to heat the water in the high-temperature rinsing process, achieving energy-saving effects and significantly reducing the overall energy consumption of the dishwasher. The dishwasher in this embodiment includes a rinsing chamber 1 and a drying chamber 2 connected in sequence. After pre-washing and main washing, the tableware can undergo high-temperature steam rinsing in the rinsing chamber 1 and then enter the drying chamber 2 for drying, thereby achieving deep cleaning of the tableware. In this embodiment, the rinsing chamber 1 is equipped with a rinsing component 11, and a first heating component 12 connected to the rinsing component 11 is located at the bottom of the rinsing chamber 1. The first heating component 12 is connected to the rinsing component 11 so that when the tableware is rinsed, the water can be heated and converted into steam by the first heating component 12, and then sprayed into the rinsing chamber 1 through the rinsing component 11, thereby achieving high-temperature steam rinsing of the tableware. In this embodiment, the drying chamber 2 is equipped with a fan 21 at the top. The output end of the fan 21 is connected to an air outlet located at the top of the drying chamber 2, and a second heating component 22 is located at the air outlet. When the tableware is dried after high-temperature steam rinsing in the rinsing chamber 1, the fan 21 can draw air and blow it towards the second heating component 22 for heating and then transport it into the drying chamber 2, thereby removing the moisture from the tableware through heat convection and achieving the drying of the tableware.
[0027] In this embodiment, the first heating component 12 can be any one of an electric boiler or a gas furnace, which facilitates rapid heating of water to convert it into steam. In this embodiment, the second heating component 22 can be any one of an electric heating wire, a PTC element, or a heating tube, which can heat air as it passes through. In this embodiment, the heating element is a heating tube, and fins are arranged around the heating tube so that the heat generated when the heating tube heats up can be quickly dissipated by the fins, thereby achieving rapid heating of the air.
[0028] like Figures 2 to 4 As shown, in order to make full use of the heat remaining in the drying chamber 2 after drying, this embodiment sets up a circulation chamber 3 on the top of the drying chamber 2 near the rinsing chamber 1, and sets up a connecting port 23 at the top of the drying chamber 2 that communicates with the circulation chamber 3. At the same time, an evaporator 4 covering the connecting port 23 is set up in the circulation chamber 3. The evaporator 4 is connected to the first heating component 12, so that the air still carrying a lot of residual heat after the heated air in the drying chamber 2 has completed the drying work can enter the circulation chamber 3 through the connecting port 23. At this time, the evaporator 4 covering the connecting port 23 will come into full contact with the residual heat air, so that the water in the evaporator 4 absorbs this residual heat and its temperature rises. Then it is transported to the first heating component 12, so that the first heating component 12 can heat the water into water vapor without consuming too much energy, effectively reducing its heating pressure, improving the evaporation efficiency of water, reducing the energy consumption of the rinsing process, realizing the recovery and reuse of heat energy, thereby effectively improving the energy saving effect of this embodiment.
[0029] In addition, such as Figures 2 to 4 As shown, in order to allow the residual hot air after drying to fully enter the circulation chamber 3 through the connecting port 23, this embodiment also provides an exhaust box 5 at the top of the circulation chamber 3 and an exhaust assembly 6 inside the exhaust box 5, so that the residual hot air in the drying chamber 2 can be drawn from the connecting port 23 into the circulation chamber 3 under the action of the exhaust assembly 6, thereby improving the heating effect of the evaporator 4.
[0030] Specifically, in this embodiment, the bottom of the exhaust box 5 is provided with an exhaust port 51 that communicates with the circulation chamber 3. The exhaust assembly 6 includes an exhaust motor 61 and a fan wheel 62 connected to the output end of the exhaust motor 61. The fan wheel 62 is located on the exhaust port 51, and the side of the fan wheel 62 used for exhaust corresponds to the exhaust port 51. When the exhaust motor 61 is started, the fan wheel 62 rotates accordingly. The side of the fan wheel 62 used for exhaust drives the air flow in the circulation chamber 3, causing a negative pressure to be formed in the circulation chamber 3. This allows the waste heat air in the drying chamber 2 to be drawn into the circulation chamber 3 from the connecting port 23, thereby contacting the evaporator 4 more quickly and fully, improving the heat exchange efficiency, allowing the water in the evaporator 4 to absorb waste heat to the maximum extent, further enhancing the energy-saving effect, and ensuring that the heat recovery process is carried out efficiently.
[0031] In addition, such as Figure 2 and 3 As shown, in this embodiment, both the exhaust vent 51 and the connecting port 23 are elongated, which increases the airflow channel area, allowing more waste heat air to smoothly enter the circulation chamber 3. This also facilitates more efficient airflow guidance by the exhaust assembly 6, ensuring smooth heat air transmission. Furthermore, the evaporator 4 is entirely covered by the long, concave connecting port 23, allowing waste heat air to pass through all parts of the steam system when entering the drying chamber from the connecting port 23, thereby effectively improving the heating efficiency of the evaporator 4. In addition, the elongated exhaust vent 51 allows the impeller 62 to draw air from various positions within the vent 51, facilitating the even entry of waste heat air into the circulation chamber 3 from the elongated connecting port 23, thus ensuring more uniform heating of all parts of the evaporator 4.
[0032] like Figure 2 and Figure 4 As shown, in this embodiment, the drying chamber 2 is also equipped with a guide plate 24 with a "V" shaped cross-section at the position corresponding to the air outlet. One side of the inclined surface of the guide plate 24 corresponds to the connecting port 23, so that after the hot air enters the drying chamber 2 from the air outlet and dries the tableware, it can fall onto the surface of the "V" shaped guide plate 24. At this time, the hot air, which still has a certain kinetic energy under the blowing of the fan 21, can flow along the inclined surface of the guide plate 24 toward the side of the connecting port 23, so as to facilitate the heating of the evaporator 4 by drawing it into the circulation chamber 3 through the impeller 62. This can reduce the irregular diffusion of residual hot air in the chamber, reduce heat loss, and improve the utilization rate of residual heat.
[0033] like Figure 3 and Figure 4 As shown, in order to utilize the waste heat air flowing to the other side of the air guide plate 24, this embodiment also provides an air collection box 7 at the top of the drying chamber 2 and at a position corresponding to the other side of the inclined surface of the air guide plate 24. The air collection box 7 is connected to the drying chamber 2, and the input end of the fan 21 is connected to the air collection box 7. When the waste heat air flows through the inclined surface of the other side of the air guide plate 24 to the side of the air collection box 7, the waste heat air can be re-inhaled into the air collection box 7 under the action of the fan 21, and then delivered to the air outlet by the fan 21. After being reheated by the second heating component 22, it enters the drying chamber 2 to achieve internal circulation, which can further improve the utilization rate of waste heat air and reduce the heating pressure of the second heating component 22, thereby further reducing energy consumption and enhancing the energy-saving performance of the whole machine.
[0034] like Figures 2 to 3 As shown, in this embodiment, a guide hood 8 is also provided at the position corresponding to the air collection box 7 in the drying chamber 2, and the opening of the guide hood 8 corresponds to the inclined surface of the air guide plate 24, so that the waste heat air flowing through the inclined surface of the air guide plate 24 toward the air collection box 7 can fully enter the air collection box 7 under the action of the guide hood 8, thereby further improving the absorption effect of the preheated air.
[0035] like Figures 2 to 4 As shown, an isolation curtain 9 is provided at the junction of the rinsing chamber 1 and the drying chamber 2 in this embodiment. The isolation curtain 9 can effectively block the airflow exchange and temperature transfer between the drying chamber 2 and the rinsing chamber 1, thereby preventing the residual hot air in the drying chamber 2 from directly entering the rinsing chamber 1 and causing waste. At the same time, it can also prevent the steam in the rinsing chamber 1 from entering the drying chamber 2 and affecting the drying of the tableware. This avoids the mutual influence between the rinsing and drying effects, and also provides an environmental guarantee for the independent and efficient operation of the two processes.
[0036] In summary, this embodiment provides a circulation chamber 3 connected to the top of the drying chamber 2, and an evaporator 4 connected to the first heating component 12 is installed in the circulation chamber 3. This allows the heated air from the drying chamber 2 to enter the circulation chamber 3 and heat the evaporator 4. As a result, the water in the evaporator 4 can be heated by the residual heat from drying and then fed into the first heating component 12. This reduces the heating pressure on the first heating component 12, thereby improving the evaporation efficiency of the water, reducing rinsing energy consumption, and achieving energy-saving effects.
[0037] The embodiments described above are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and modifications made by those skilled in the art based on this utility model shall fall within the scope of protection of this utility model.
Claims
1. A heat-circulating energy-saving dishwasher, characterized in that, include: A rinsing chamber (1) is provided inside the rinsing chamber (1), and a first heating component (12) for heating water and converting it into water vapor is provided at the bottom of the rinsing chamber (1). The first heating component (12) is connected to the rinsing component (11). A drying chamber (2) is provided with a fan (21) on the top of the drying chamber (2). An air outlet connected to the output end of the fan (21) is provided at the top of the drying chamber (2). A second heating component (22) for heating air is provided at the air outlet. A circulation chamber (3) is located on one side of the top of the drying chamber (2). The top of the drying chamber (2) is provided with a communication port (23) that communicates with the circulation chamber (3). An evaporator (4) is provided inside the circulation chamber (3) and covers the communication port (23). The evaporator (4) is connected to the first heating component (12).
2. The heat-circulating energy-saving dishwasher according to claim 1, characterized in that, The top of the circulation chamber (3) is provided with an exhaust box (5), the bottom of the exhaust box (5) is provided with an exhaust port (51) communicating with the circulation chamber (3), and the exhaust box (5) is provided with an exhaust assembly (6).
3. The heat-circulating energy-saving dishwasher according to claim 2, characterized in that, The exhaust assembly (6) includes an exhaust motor (61) and a fan wheel (62) connected to the output end of the exhaust motor (61). The fan wheel (62) is located on the exhaust port (51), and the side of the fan wheel (62) used for exhaust corresponds to the exhaust port (51).
4. A heat-circulating energy-saving dishwasher according to any one of claims 2 or 3, characterized in that, Both the exhaust vent (51) and the connecting vent (23) are elongated.
5. The heat-circulating energy-saving dishwasher according to claim 1, characterized in that, The drying chamber (2) is equipped with a guide plate (24) at the position corresponding to the air outlet. The cross-section of the guide plate (24) is a "V" shaped structure, and one inclined surface of the guide plate (24) corresponds to the connecting port (23).
6. A heat-circulating energy-saving dishwasher according to claim 5, characterized in that, An air collection box (7) is provided at the top of the drying chamber (2) and at a position corresponding to the other side of the air guide plate (24). The air collection box (7) is connected to the drying chamber (2), and the input end of the fan (21) is connected to the air collection box (7).
7. A heat-circulating energy-saving dishwasher according to claim 6, characterized in that, Inside the drying chamber (2), a guide hood (8) is provided at the position of the air collection box (7), and the opening of the guide hood (8) corresponds to the inclined surface of the air guide plate (24).
8. A heat-circulating energy-saving dishwasher according to claim 1, characterized in that, The rinsing chamber (1) and the drying chamber (2) are connected in sequence. The circulation chamber (3) is located on the top of the drying chamber (2) near the rinsing chamber (1). An isolation curtain (9) is provided at the junction of the rinsing chamber (1) and the drying chamber (2).