Dish-washing machine with single main washing function and double rinsing and uncovering functions
By adding pre-rinsing function and steam heat recovery system in the dishwasher, the problems of small particles residues and high energy consumption are solved, and the cleaning effect of high cleanliness and low energy consumption is achieved.
Patent Information
- Application Number
- CN202422228653.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-11
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-11
AI Technical Summary
Existing dishwashers are prone to small particulate residues after cleaning, and the rinsing process consumes a lot of high-temperature water, resulting in high energy consumption.
Add pre-rinse function, filter fine particles through a filter valve, combine steam heat recovery and DC centrifugal fan to achieve waste heat recovery and drying, and reduce rinse water temperature and energy consumption.
Effectively reduce the residue of fine particles on the surface of the tableware, save rinsing water, reduce energy consumption, improve cleaning and accelerate drying.
Smart Images
Figure CN223143438U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tableware cleaning equipment, in particular to a single main washing and double rinsing cover-opening dishwasher. Background Art
[0002] A dishwasher is a device for automatically cleaning tableware such as bowls, chopsticks, plates, dishes, knives, forks, etc., which is divided into two categories: household and commercial. Among them, commercial dishwashers include cabinet type, hood type, cover-opening type and other structural forms.
[0003] Most of the existing cover-opening dishwashers work by first cleaning and then rinsing. When a conventional dishwasher is working, the main function of the cleaning system is to remove large particles of dirt on the dishes. The washing water is sprayed by the nozzle groups on the upper and lower cleaning spray arms for rinsing. After passing through the sieve for filtration, the water returns to the cleaning sink and is recycled through the cleaning water pump. Dishwasher-specific detergent needs to be added to the cleaning sink. The main function of the detergent is to assist in removing grease and residues on the dishes. To achieve the best washing effect of the detergent, the temperature of the washing water is required to be between 50°C and 60°C, and the specific temperature requirement varies slightly depending on different detergents;
[0004] The main function of the rinsing system is to rinse off the dirty washing water and detergent residues on the dishes. In the rinsing area, clean water at 80°C - 85°C is directly sprayed from the rinsing arm onto the bowls and dishes, and then flows into the washing sink for cleaning and recycling. The rinsing does not form a cycle. The rinsing water of the dishwasher flows into the washing sink and finally reaches the drain pipe through the overflow port.
[0005] However, after the above-mentioned existing dishwashers are cleaned, small particles are likely to remain on the surface of the tableware. After that, a large amount of rinsing water is required for rinsing treatment to completely rinse off the residues, resulting in a large consumption of high-temperature water during the rinsing process. In addition, due to the high temperature of the rinsing water, a large amount of rinsing water makes the overall energy consumption of the dishwasher relatively high. Summary of the Utility Model
[0006] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a single main washing and double rinsing cover-opening dishwasher.
[0007] To solve the above technical problems, the utility model provides the following technical solutions:
[0008] A single main washing and double rinsing cover-opening dishwasher includes a body. The upper part inside the body is set as a cleaning cavity, and a main washing spray arm is arranged in the cleaning cavity. A cleaning water pump is arranged at the lower part of the body. The cleaning water pump is connected to the bottom of the cleaning cavity through a pipeline. The cleaning water pump is connected to a reversing valve through a pipeline, and the reversing valve is connected to the main washing spray arm through a pipeline. The reversing valve is connected to a pre-rinsing water pump through a pipeline, the pre-rinsing water pump is connected to a filtering valve through a pipeline, and the filtering valve is connected to the bottom of the cleaning cavity through a pipeline.
[0009] A steam heat recovery chamber is connected to the top of the body. The bottom of the steam heat recovery chamber is connected to the top of the cleaning chamber. A centrifugal fan is provided at the top of the steam heat recovery chamber. A heat exchanger is provided in the steam heat recovery chamber. The heat exchanger is respectively connected with a cold water inlet pipe and a warm water outlet pipe.
[0010] The heat exchanger is a finned heat exchanger.
[0011] The warm water outlet pipe is connected to the rinsing water tank through a pipeline.
[0012] An air outlet is provided at the top of the steam heat recovery chamber. The air outlet can be connected to the drying workbench through a pipeline and is connected to the hot air inlet of the drying workbench.
[0013] The beneficial effects achieved by the present utility model are as follows:
[0014] The present utility model adds a pre-rinsing function. When pre-rinsing, the water sprayed by the main washing spray arm passes through the filtration of the filter valve, and the water quality is cleaner than that during main washing. Pre-rinsing effectively reduces the residue of fine particles on the surface of tableware. During rinsing, less water can be used to rinse the tableware clean, saving energy, and the cleanliness of the tableware after cleaning is higher.
[0015] The present utility model can perform heat exchange between the water vapor generated by the dishwasher and the normal temperature inlet water for waste heat recovery, reduce the temperature and humidity of the exhaust steam. Finally, the exhaust steam temperature is reduced to about 40 °C. And steam heat recovery can raise the inlet water temperature of the dishwasher to about 40 °C. After the inlet water temperature is increased, the rinsing heating power of the lid opener can be greatly reduced. Moreover, a DC centrifugal fan is used as the power source for suction, and the hot air after heat recovery is used to dry the tableware after cleaning, accelerating the drying of the tableware surface. Description of the Drawings
[0016] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model, and do not constitute a limitation to the present utility model. In the drawings:
[0017] Figure 1 is the structural schematic diagram of the present utility model;
[0018] Figure 2 is the partial structural schematic diagram of the present utility model (the arrow direction is the main washing water flow direction);
[0019] Figure 3 is the partial structural schematic diagram of the present utility model (the arrow direction is the pre-rinsing water flow direction);
[0020] Figure 4It is a partial structural schematic diagram of the present utility model (the arrow direction is the water vapor flow direction);
[0021] Figure 5 It is a structural schematic diagram of the present utility model and the drying workbench (the arrow direction is the hot air flow direction).
[0022] In the figure: 1, the body; 2, the cleaning water pump; 3, the pre-rinsing water pump; 4, the filter valve; 5, the reversing valve; 6, the main washing spray arm; 7, the cleaning chamber; 8, the steam heat recovery chamber; 9, the heat exchanger; 10, the centrifugal fan; 11, the cold water inlet pipe; 12, the warm water outlet pipe; 13, the air outlet; 14, the drying workbench; 15, the hot air inlet. Specific embodiments
[0023] The following is a description of the preferred embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for explaining and illustrating the present utility model, and are not used to limit the present utility model.
[0024] Embodiment:
[0025] As Figures 1 - 5 shown, a single main washing and double rinsing lid-lifting dishwasher includes a body 1. The upper part inside the body 1 is set as a cleaning chamber 7, and a main washing spray arm 6 is arranged in the cleaning chamber 7. A cleaning water pump 2 is arranged at the lower part of the body 1. The cleaning water pump 2 is connected to the bottom of the cleaning chamber 7 through a pipeline. The cleaning water pump 2 is connected to a reversing valve 5 through a pipeline, and the reversing valve 5 is connected to the main washing spray arm 6 through a pipeline. The reversing valve 5 is connected to a pre-rinsing water pump 3 through a pipeline, the pre-rinsing water pump 3 is connected to a filter valve 4 through a pipeline, and the filter valve 4 is connected to the bottom of the cleaning chamber 7 through a pipeline.
[0026] As Figure 2 shown, when the cleaning system operates, the cleaning water pump 2 sucks the water in the cleaning chamber 7 and sends it to the main washing spray arm 6 through the reversing valve 5 for such cyclic cleaning; after the cleaning system finishes working, it pauses for about 5 seconds. After the water droplets on the tableware fall off, as Figure 3 shown, the pre-rinsing water pump 3 starts to work. The pre-rinsing water pump 3 also uses the cleaning water in the cleaning chamber 7. The water is first filtered by the filter valve 4 and then sprayed out through the main washing spray arm 6. The filter valve 4 uses a stainless steel precision filter, and preferably the filter mesh precision is about 200 meshes (about 75 micrometer pore diameter). In this way, the fine particle impurities in the cleaning water can be isolated and will not enter the main washing spray arm 6. The water flow sprayed out by the main washing spray arm 6 during pre-rinsing is cleaner than the water quality during main washing. During pre-rinsing, the fine particle residues on the surface of the tableware are effectively reduced. During rinsing, less water can be used to rinse the tableware clean, saving energy, and the cleanliness of the tableware after cleaning is higher.
[0027] A steam heat recovery chamber 8 is connected to the top of the machine body 1. The bottom of the steam heat recovery chamber 8 is connected to the top of the cleaning chamber 7. A centrifugal fan 10 is provided at the top of the steam heat recovery chamber 8. A heat exchanger 9 is provided in the steam heat recovery chamber 8. The heat exchanger 9 is respectively connected to a cold water inlet pipe 11 and a warm water outlet pipe 12. The heat exchanger 9 is a finned heat exchanger.
[0028] The warm water outlet pipe 12 is connected to the rinsing water tank through a pipeline to provide low-temperature water inlet for the rinsing system, saving subsequent heating time and heating energy consumption.
[0029] An air outlet 13 is opened at the top of the steam heat recovery chamber 8. The air outlet 13 can be connected to a drying workbench 14 through a pipeline and is connected to a hot air inlet 15 of the drying workbench 14. The drying workbench 14 and the machine body 1 are independently arranged. The drying workbench 14 can move freely. The tableware after rinsing is transferred to the drying workbench 14, and the hot air at the air outlet 13 is diverted to the hot air inlet 15 of the drying workbench 14, and the hot air is blown on the tableware to dry the tableware.
[0030] The highest rinsing temperature of the dishwasher reaches 85°C. During the working process, a large amount of high-temperature water vapor (about 70°C) will be generated. This part of the high-temperature waste gas needs to be exhausted outdoors to maintain a suitable temperature and humidity in the dishwashing room. The utility model pre-recovers the waste heat of the water vapor generated by the dishwasher (performs heat exchange with normal-temperature water inlet), which can reduce the temperature and humidity of the exhaust steam. Finally, the exhaust steam temperature is reduced to about 40°C. The steam heat recovery can increase the inlet water temperature of the dishwasher to about 40°C. After the inlet water temperature is increased, the rinsing heating power of the dishwasher with the lid opened can be saved by about 1 kW.
[0031] In addition, a DC centrifugal fan 10 is used as the power source for suction, and the hot air after heat recovery can be used to dry the tableware after cleaning, accelerating the drying of the tableware surface.
Claims
1. A single main wash and double rinse lid-lifting dishwasher, comprising a body (1), the upper part inside the body (1) is set as a cleaning cavity (7), and a main wash spray arm (6) is arranged inside the cleaning cavity (7), characterized in that, A cleaning water pump (2) is provided at the lower part of the machine body (1). The cleaning water pump (2) is connected to the bottom of the cleaning chamber (7) through a pipeline. The cleaning water pump (2) is connected to a reversing valve (5) through a pipeline. The reversing valve (5) is connected to the main washing spray arm (6) through a pipeline. The reversing valve (5) is connected to a pre-rinsing water pump (3) through a pipeline. The pre-rinsing water pump (3) is connected to a filtering valve (4) through a pipeline. The filtering valve (4) is connected to the bottom of the cleaning chamber (7) through a pipeline.
2. The single main wash and double rinse lid-opening dishwasher according to claim 1, wherein, A steam heat recovery chamber (8) is communicated and provided at the top of the machine body (1). The bottom of the steam heat recovery chamber (8) is communicated with the top of the cleaning chamber (7). A centrifugal fan (10) is provided at the top of the steam heat recovery chamber (8). A heat exchanger (9) is provided in the steam heat recovery chamber (8). The heat exchanger (9) is respectively connected with a cold water inlet pipe (11) and a warm water outlet pipe (12).
3. The single main wash double rinse lid-lifting dishwasher according to claim 2, wherein, The heat exchanger (9) is a finned heat exchanger.
4. The single main wash and double rinse lid-lifting dishwasher according to claim 2, wherein, The warm water outlet pipe (12) is connected to a rinsing water tank through a pipeline.
5. The single main wash double rinse lid-opening dishwasher according to claim 2, wherein, An air outlet (13) is opened at the top of the steam heat recovery chamber (8). The air outlet (13) can be connected to a drying workbench (14) through a pipeline and is connected to the hot air inlet (15) of the drying workbench (14).