Pressure stabilizing rinsing system of uncovering type dish washing machine

Abstract

The utility model discloses a pressure stabilizing rinsing system of an uncovering type dish washing machine, the pressure stabilizing rinsing system of the uncovering type dish washing machine comprises a bottom plate, a rinsing water tank, a relay water storage tank and a water pump, the rinsing water tank, the relay water storage tank and the water pump are all installed on the bottom plate, the top of the relay water storage tank is provided with a water inlet and a vent hole, and the water inlet is communicated with the vent hole. The water inlet is externally connected with a tap water pipeline, a second water outlet penetrating through the bottom plate is formed in the bottom of the relay water storage tank, the relay water storage tank is connected with the rinsing water tank through a water inlet pipeline, and the water pump is installed in the middle of the water inlet pipeline and can press water stored in the relay water storage tank into the rinsing water tank. And a two-way joint is mounted at the top of the tail end of the rinsing water tank and is simultaneously connected with a rinsing pipeline and a drier access pipeline above the two-way joint. By means of the mode, the influence of instability of a water supply system can be isolated, and the service life of the whole system is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of commercial dishwashers, in particular to a voltage-stabilizing rinsing system for a lid-lifting type dishwasher. Background Art

[0002] The lid-lifting type dishwasher is a common automated commercial kitchen equipment. Currently, when using the lid-lifting type dishwasher, usually two systems are adopted. One is a single-pump system, as shown in the appendix Figure 3 , this system is simple, with high reliability and not prone to failure, but it is easily affected by the unstable water pressure. The water volume is large or small. When the water pressure is small, the flow rate is insufficient and the cleaning is not clean. When the water pressure is too high, the water volume is too large, which not only wastes water and electricity resources but also harms the cleaning arm and affects the service life of the cleaning arm. The other is a double-pump system, as shown in the appendix Figure 4 , a water pump is added between the rinsing water tank and the rinsing pipe in this system, so that the problems of unstable pressure and insufficient flow rate during the operation of the single-pump water supply system can be solved. However, new problems arise. This structure requires a water level gauge to be installed in the rinsing water tank, but scale is easily accumulated inside the rinsing water tank during the heating process, especially in the northern part of China where the water hardness is higher and scale is more easily generated. The scale adheres to the water level gauge, easily causing the water level gauge to malfunction. Thus, it affects the normal use of the dishwasher. Even if a pneumatic water level gauge is used, it will also malfunction due to unstable water vapor and internal air pressure. In addition, the water passing through the water pump is hot water, so higher quality and specifications are required for the water pump, and a special heat-resistant pump must be used. Summary of the Utility Model

[0003] The main technical problem to be solved by the utility model is to provide a voltage-stabilizing rinsing system for a lid-lifting type dishwasher, which can improve the stability of the rinsing process, ensure the consistency of the dishwashing effect and has a longer service life of the water pump.

[0004] To solve the above technical problems, a technical solution adopted by the present utility model is: to provide a voltage-stabilized rinsing system for a lid-lifting dishwasher. The voltage-stabilized rinsing system of the lid-lifting dishwasher includes: a bottom plate and a rinsing water tank. The rinsing water tank is installed on the bottom plate. A heater is provided inside the rinsing water tank. A first drain port is provided at the bottom of the rinsing water tank. The first drain port penetrates through the plate surface of the bottom plate. The voltage-stabilized rinsing system further includes a relay water storage tank and a water pump. Both the relay water storage tank and the water pump are installed on the bottom plate. An inlet and a vent hole are provided at the top of the relay water storage tank. The inlet is externally connected to a tap water pipe. A second drain port passing through the bottom plate is provided at the bottom of the relay water storage tank. The relay water storage tank is connected to the rinsing water tank through a water inlet pipe. The water pump is installed in the middle of the water inlet pipe and can press the stored water in the relay water storage tank into the rinsing water tank. A two-way joint is installed at the top of the tail end of the rinsing water tank. The two-way joint is simultaneously connected to an upper rinsing pipe and a dryer agent access pipe.

[0005] In a preferred embodiment of the present utility model, the vent hole is connected to the upper dishwashing sink through a hose.

[0006] In a preferred embodiment of the present utility model, the inlet is located at the highest point of the relay water storage tank, and a float valve is installed directly below the opening where the inlet accesses the relay water storage tank.

[0007] In a preferred embodiment of the present utility model, the highest designed water level in the relay water storage tank is not lower than the highest designed water level in the rinsing water tank.

[0008] In a preferred embodiment of the present utility model, the effective volume of the rinsing water tank is not less than 3 times the water consumption of the dishwasher for one-time rinsing.

[0009] In a preferred embodiment of the present utility model, the effective volume of the relay water storage tank is not less than the water consumption of one rinsing cycle of the dishwasher. The beneficial effects of the present utility model are as follows: By adding a relay water storage tank to the water supply structure of the existing lid-opening dishwasher and installing a water pump between the relay water storage tank and the rinsing water tank, during rinsing, the water stored in the relay water storage tank enters the rinsing water tank at a constant pressure under the action of the water pump, replacing the hot water in the rinsing water tank into the rinsing arm above the dishwashing sink. Finally, the high-temperature water is sprayed downward by the rotating nozzle to complete the rinsing action. In this way, the influence of water pressure fluctuations during direct water supply from the water pipe on the rinsing action can be effectively blocked, making the pressure of the nozzle constant during spraying, without sudden changes. The cleaning effect of all dinner plates is uniform and stable. Moreover, during this process, cold water passes through the water pump. Compared with the traditional double-pump system, the working conditions requirements for the water pump are significantly reduced, and the actual service life is significantly improved. In addition, there is no need to install a water level gauge in the rinsing water tank, reducing the requirements for the entire control system. Overall, the after-sales cost is significantly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a schematic three-dimensional structure diagram of a preferred embodiment of the present utility model;

[0011] Figure 2 is a schematic side view structure diagram of the illustrated embodiment;

[0012] Figure 3 is a schematic diagram of a traditional single-pump system;

[0013] Figure 4 is a schematic diagram of a traditional double-pump system;

[0014] The labels of each component in the drawings are as follows:

[0015] 1. Bottom plate, 2. Water pump, 3. Rinsing water tank, 4. Relay water storage tank, 5. Water inlet pipe, 6. Solenoid valve;

[0016] 301. Water tank heater, 302. Bidirectional interface, 303. First drain port;

[0017] 401. Water inlet, 402. Vent hole, 403. Float valve, 404. Second drain port. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following describes in detail the preferred embodiments of the present utility model with reference to the accompanying drawings, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making the protection scope of the present utility model more clearly defined.

[0019] Please refer to Figures 1 to 2 , the embodiments of the present utility model include:

[0020] A constant-pressure rinsing system for a lid-opening dishwasher, the constant-pressure rinsing system of the lid-opening dishwasher comprising: a bottom plate 1 and a rinsing water tank 3, the rinsing water tank 3 being installed on the bottom plate 1, a water tank heater 301 being provided in the middle of the rinsing water tank 3, a first drain port 303 being provided at the bottom of the rinsing water tank 3, the first drain port 303 passing through the plate surface of the bottom plate 1, the constant-pressure rinsing system further comprising a relay water storage tank 4 and a water pump 2, the relay water storage tank 4 and the water pump both being installed on the bottom plate 1, a water inlet 401 and a vent hole 402 being provided at the top of the relay water storage tank 4, the water inlet being externally connected to a tap water pipe, a second drain port 404 passing through the bottom plate 1 being provided at the bottom of the relay water storage tank 4, the relay water storage tank 4 being connected to the rinsing water tank 3 through a water inlet pipe 5, the water pump 2 being installed in the middle of the water inlet pipe 5 and capable of pressing the stored water in the relay water storage tank 4 into the rinsing water tank 3, a two-way joint 302 being installed at the top of the tail end of the rinsing water tank 3, the two-way joint 302 being simultaneously connected to an upper rinsing pipe and a drying agent access pipe. In this way, the water pump 2 is arranged between the rinsing water tank 3 and the relay water storage tank 4, and can press the stored water in the relay water storage tank 4 into the rinsing water tank 3 at a constant pressure, and displace the high-temperature water at about 85 °C in the rinsing water tank into the spray arm above the dishwashing sink and spray it out rotationally by the nozzles on the spray arm to clean the dinner plates. The pressure of the nozzle spraying water is only related to the rated pressure of the water pump 2, and the water pressure is uniform and stable throughout the rinsing process, thus effectively eliminating the influence of the external tap water supply state on the rinsing action. Moreover, a vent hole 402 is provided at the top of the relay water storage tank 4 to prevent the formation of negative pressure in the relay water storage tank 4 due to the too fast water pumping speed of the water pump when the water pump pumps water, resulting in unstable flow rate, and further improving the stability of the water supply of the water pump 2.

[0021] The highest designed water level in the relay water storage tank 4 is not lower than the highest designed water level in the rinsing water tank 3. The water inlet 401 is located at the highest point of the relay water storage tank 4, and a float valve 403 is installed directly below the opening where the water inlet 401 accesses the relay water storage tank 4. In actual design, the highest designed water level in the relay water storage tank 4 is 2 mm higher than the highest designed water level in the rinsing water tank 3 to ensure that the water in the rinsing water tank 3 is also full when the relay water storage tank 4 is full, and the installation of the float valve 403 can ensure that the water inlet is automatically closed after the water in the relay water storage tank 4 reaches the designed height.

[0022] The vent hole 402 is connected to the upper dishwashing sink through a hose. This can prevent water from directly overflowing from the vent hole 402 to the surroundings when the ball valve 403 fails, and improve the safety of the entire system.

[0023] The effective volume of the rinsing water tank 3 is not less than three times the water consumption of a single rinsing in the dishwashing sink. In actual implementation, since the water consumption of a single rinsing in the dishwashing sink is generally about 2.5 L, the effective volume in the rinsing water tank 3 is at least 7.5 L. In actual use, the designed volume is generally 8.5 L. The reason for such design is that during actual rinsing, each rinsing operation generally lasts only about 10 s and the water outlet speed is very fast. If the capacity of the rinsing water tank 3 is small and there is no margin, the cold water entering during rinsing will quickly mix with the water in the tank, reducing the temperature of the rinsing liquid sprayed from the rinsing arm and affecting the rinsing effect.

[0024] The effective volume of the relay storage water tank 4 is not less than the water consumption of a single rinsing of the dishwasher. In actual implementation, the effective volume of the relay storage water tank 4 is generally the same as the water consumption of a single rinsing, about 2.5 L. The reason for such design is that during cleaning, the water pump 2 completes the rinsing operation by pressing the water in the relay storage water tank 4 into the rinsing water tank 3 to displace the hot water in the rinsing water tank 3 into the cleaning arm above the dishwashing sink.

[0025] This process generally lasts only about 10 s, and the relay storage water tank generally has no time to replenish water. Therefore, the effective volume of the relay storage water tank 4 should not be less than the water consumption of a single rinsing. Otherwise, it will result in insufficient rinsing water and affect the rinsing effect. Since tap water continuously enters the tank from the water inlet 401 during the process of the relay water tank 4 pressing water into the rinsing water tank 3 and when the rinsing ends and enters the main washing stage, the effective volume of the relay storage water tank 4 can be relatively small, which can reduce the space occupation while ensuring the normal water supply of the water pump 2. Therefore, the effective volume of the relay storage water tank 4 is usually designed according to the water consumption of a single rinsing during actual design.

[0026] This embodiment can effectively isolate the influence of water pressure fluctuations during the direct water supply of the water pipe on the rinsing operation, improve the stability of water during rinsing, improve the consistency of the dishwashing effect, and during this process, the water pump 2 always passes through cold water, and there is no need to install a liquid level gauge in the rinsing water tank. Compared with the traditional double-pump water supply system, the working conditions requirements for the water pump 2 are significantly reduced, the actual service life is significantly improved, the maintenance pressure is significantly reduced, and in practice, the relay storage water tank can also be combined with a dishwasher with a heat recovery device to recover the waste heat in the wastewater and reduce the overall heat loss.

[0027] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A pressure-stabilizing rinsing system for a hood-type dishwasher, the pressure-stabilizing rinsing system for a hood-type dishwasher comprising: A bottom plate and a rinsing water tank, the rinsing water tank is installed on the bottom plate, a heater is provided inside the rinsing water tank, a first drain outlet is provided at the bottom of the rinsing water tank, and the first drain outlet passes through the plate surface of the bottom plate, and is characterized in that the pressure-stabilizing rinsing system also includes a relay water storage tank and a water pump, the relay water storage tank and the water pump are both installed on the bottom plate, a water inlet and an air vent are provided on the top of the relay water storage tank, the water inlet is externally connected to a tap water pipe, a second drain outlet passing through the bottom plate is provided at the bottom of the relay water storage tank, the relay water storage tank and the rinsing water tank are connected by a water inlet pipe, the water pump is installed in the middle of the water inlet pipe, and can press the water stored in the relay water storage tank into the rinsing water tank, and a two-way joint is installed on the top of the tail end of the rinsing water tank, and the two-way joint is simultaneously connected to the upper rinsing pipe and the drying agent access pipe.

2. The pressure-stabilizing rinsing system of a hood-type dishwasher according to claim 1, characterized in that: The vent hole is connected to the upper dishwashing pool through a hose.

3. The pressure-stabilizing rinsing system of a hood-type dishwasher according to claim 1, characterized in that: The water inlet is located at the highest point of the relay water storage tank, and a float valve is installed just below the opening where the water inlet is connected to the relay water storage tank.

4. The pressure-stabilizing rinsing system of a hood-type dishwasher according to claim 1, characterized in that: The highest design water level in the relay water storage tank is not lower than the highest design water level in the rinse water tank.

5. The pressure-stabilizing rinsing system of a hood-type dishwasher according to claim 1, characterized in that: The effective volume of the rinse water tank is not less than 3 times the amount of water used by the dishwasher for one rinse.

6. The pressure-stabilizing rinsing system of a hood-type dishwasher according to claim 1, characterized in that: The effective volume of the relay water storage tank is not less than the water consumption of the dishwasher for one rinse.

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