Dishwasher structure and dishwasher

Abstract

The present invention discloses a dishwasher structure and a dishwasher, belonging to the technical field of dishwashers, including a water tank, a water pump, the water pump including a motor and an impeller assembly, the motor being connected to the impeller assembly through a motor shaft; the impeller assembly including a bottom shell, a top shell, and a centrifugal impeller, the centrifugal impeller being arranged in a space formed by the bottom shell and the top shell; an opening is arranged on the bottom shell as a water inlet, and a water outlet is arranged on the top shell, the water outlet is connected to a spray arm; the water inlet is immersed below the horizontal plane of the water tank and keeps a certain distance from the bottom of the water tank; the hub of the centrifugal impeller is connected to the motor shaft, the centrifugal impeller rotates under the drive of the motor shaft, and the water in the water tank is sucked into the bottom shell from the water inlet from the bottom to the top, and thrown out from the water outlet of the top shell from the bottom to the top to the spray arm. The present invention makes the water outlet direction of the water pump consistent with the water inlet direction, the water outlet is directly connected to the spray arm, so that the entire waterway is not provided with a water pipe, avoiding the problem of pipe blockage and difficulty in cleaning that is common in existing washing machines.

Description

Technical Field

[0001] The present invention relates to the technical field of dishwashers, and in particular to a dishwasher structure and a dishwasher. Background Art

[0002] A dishwasher is a device that automatically washes tableware such as bowls, chopsticks, plates, dishes, knives, forks, etc. The fully automatic dishwashers on the market can be divided into two categories: household and commercial. Household fully automatic dishwashers are only suitable for families, mainly cabinet-type, table-top and sink-integrated types.

[0003] At present, dishwashers, including some sink-type dishwashers, generally use traditional small centrifugal water pumps to recycle the water in the dishwasher. Centrifugal water pumps have the following inherent characteristics:

[0004] (1) The direction of water flow through a centrifugal pump is that it is sucked in along the axial direction of the impeller and flows out perpendicular to the axial direction, that is, the inlet and outlet water flow directions are 90 degrees to each other.

[0005] (2) Since the centrifugal pump forms a vacuum to absorb water at the impeller inlet, water must be poured into the pump and the suction pipe before starting, or air must be pumped out with a vacuum pump to expel air and form a vacuum. In addition, the pump casing and the suction pipe must be strictly sealed without air leakage, otherwise a vacuum cannot be formed and water cannot be sucked up.

[0006] Due to the inherent characteristics of centrifugal pumps, it is necessary to connect an inlet pipe and an outlet pipe to the water inlet and outlet of the water pump, then submerge the inlet pipe in the sink, and connect the spray arm with the outlet pipe. This results in a long circulation path for the circulating water. Since dishwashing water often contains a lot of oil, a lot of grease is inevitably left in the inlet pipe and the outlet pipe, which cannot be cleaned, and will affect the performance of the dishwasher over time.

[0007] The recently emerged FOTILE sink-type dishwasher adopts an open non-circulating pipeline design, but its water pump motor is encapsulated in a plastic casing, and the impellers are two upper and lower impellers. The lower impeller is responsible for sucking water from the sink, and the upper impeller is used to pressurize the water in the spray arm. In addition, the water outlet direction of the water channel is horizontal, and the spray arm needs to be set horizontally so that the water in the spray arm can be sprayed from bottom to top. For details, please refer to patent 201310749864. In addition, the water pump of this structure needs to be matched with a special structure of sealing, which limits the versatility of the water pump motor. Summary of the invention

[0008] In view of this, the technical problem to be solved by the present invention is to provide a dishwasher structure and a dishwasher to solve the problems that the water inlet and outlet water paths of the water pump in the existing dishwasher are long and not conducive to cleaning, and the sealing process of the water pump is complicated.

[0009] The technical solution adopted by the present invention to solve the above technical problems is as follows:

[0010] A dishwasher structure comprises a water tank, a water pump, the water pump comprises a motor and an impeller assembly, the motor is connected to the impeller assembly via a motor shaft; the impeller assembly is arranged in the water tank, the impeller assembly comprises a bottom shell, a top shell, and a centrifugal impeller, the centrifugal impeller is arranged in a space formed by the bottom shell and the top shell; an opening is arranged on the bottom shell as a water inlet, and a water outlet is arranged on the top shell, the water outlet is connected to a spray arm; the water inlet is immersed below the horizontal plane of the water tank and keeps a certain distance from the bottom of the water tank; the hub of the centrifugal impeller is connected to the motor shaft, the centrifugal impeller rotates under the drive of the motor shaft, and the water in the water tank is sucked into the bottom shell from the bottom to the top from the water inlet, and thrown out from the water outlet of the top shell from the bottom to the top to the spray arm.

[0011] Furthermore, an opening is provided at the bottom of the water tank, the motor of the water pump is provided outside the water tank, the motor shaft passes through the opening at the bottom of the water tank to connect to the impeller assembly, and the motor shaft is sealed with the bottom of the water tank.

[0012] Furthermore, the centrifugal impeller includes a layer of blades, and the centrifugal impeller is any one of a semi-closed type, a closed type, and an open type.

[0013] Furthermore, the top shell is in an inverted U shape, the bottom shell is in a U shape, and the top shell and the bottom shell have the same radius and are interlocked.

[0014] Furthermore, the water inlet is a circular opening with a diameter larger than the motor shaft and is arranged in the center of the bottom shell. The top end of the motor shaft passes through the water inlet and is connected to the hub of the centrifugal impeller.

[0015] Furthermore, an arc-shaped guide groove is arranged on the inner side surface of the top shell, and a retaining wall perpendicular to the top shell is arranged at the end of the arc-shaped guide groove, and the retaining wall extends upward to the edge of the water outlet.

[0016] Furthermore, the water outlet is arranged at the top of the top shell and extends out an interface connected to the spray arm.

[0017] Furthermore, the impeller assembly is fixedly connected to the bottom of the water tank via a bracket.

[0018] Furthermore, the spray arm rotates 360 degrees relative to the water outlet to spray.

[0019] Furthermore, the present invention further provides a dishwasher, comprising any one of the above-mentioned dishwasher structures.

[0020] The dishwasher structure and dishwasher realized by the present invention do not have water pipes at the water inlet and the water outlet. The water inlet is located at a height lower than the lowest water level in the water tank, that is, the water inlet is submerged in water and directly draws circulating water for cyclic cleaning from the water tank. The water outlet direction is consistent with the water inlet direction. The water outlet is directly connected to the spray arm, so that the entire water circuit is not provided with water pipes, which simplifies the water pump structure and avoids the problem of blockage and difficulty in cleaning of the water inlet and outlet pipes commonly existing in existing dishwashers. The water pump motor is arranged under the water tank, which is simple to replace and easy to adjust the power. The water pump is easy to use the traditional process of mechanical sealing, with reliable sealing and strong process versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A sectional view of the structure of the dishwasher provided by the present invention;

[0022] Figure 2 A top view of the structure of the dishwasher provided by the present invention;

[0023] Figure 3 A three-dimensional schematic diagram of an upper cover and an impeller of a dishwasher structure provided by the present invention;

[0024] Figure 4 For the present invention Figure 3 Front view of the structure. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] Embodiment 1

[0027] The first embodiment of the present invention provides a dishwasher structure, such as Figure 1 As shown, it includes a water tank 10 and a water pump 20. The shape of the water tank can be arbitrary, such as square or round. The water tank is generally made of stainless steel and is used to form a container for placing utensils and carrying cleaning water in the dishwasher. The water pump 20 includes a motor 21 and an impeller assembly 22. The motor 20 is connected to the impeller assembly 22 through a motor shaft 23. The motor 21 provides power for the water pump. Under the action of the motor 20, the motor shaft 23 rotates, driving the impeller in the impeller assembly connected to the motor shaft 23 to rotate. The water pump 20 is used to absorb, pressurize, and spray the water that flows back to the bottom of the water tank upward onto the utensils.

[0028] In order to facilitate replacement and repair of the motor 21 of the water pump, the motor 21 is arranged outside the water tank. Specifically, an opening is arranged at the bottom of the water tank 10, and the motor 21 of the water pump is arranged outside the water tank. As shown in FIG1 , the motor 21 is arranged below the bottom of the water tank 10, and the impeller assembly 22 is arranged inside the water tank 10. The motor shaft 23 passes through the opening at the bottom of the water tank 10 and is connected to the impeller assembly 22. At the same time, the motor shaft 23 is sealed with the bottom of the water tank. Specifically, the motor shaft 23 is sealed with the bottom of the water tank. Figure 1 The sealing ring 40 shown surrounds the gap formed between the motor shaft 23 and the water tank, so that the bottom of the water tank is watertight.

[0029] In this embodiment, the impeller assembly 22 includes a bottom shell 25, a top shell 26, and a centrifugal impeller 24. The top shell 25 is inverted U-shaped, the bottom shell 26 is U-shaped, the top shell 26 and the bottom shell 25 have the same radius and are interlocked with each other, and the centrifugal impeller 24 is arranged in the space formed by the bottom shell 25 and the top shell 26. Of course, as an alternative, the bottom shell and the top shell can be the bottom surface and the top surface of the impeller assembly shell. In the present invention, the centrifugal impeller 24 includes a layer of blades, and the centrifugal impeller 24 is any one of a semi-closed type, a closed type, and an open type.

[0030] The bottom shell 25 is provided with an opening as a water inlet. Figure 1 The water inlet 27 is a circular opening having a diameter larger than the motor shaft 23 and is disposed in the center of the bottom shell 25. Preferably, the diameter of the water inlet is twice the diameter of the motor shaft 23. The top end of the motor shaft 23 passes through the water inlet 27 and is connected to the hub of the centrifugal impeller 24. The structure of the hub is as follows: Figure 3 and Figure 4 The hub 31 is shown.

[0031] like Figure 2 and Figure 3 As shown, a water outlet 28 is provided on the top shell 26, and the water outlet 28 is connected to a spray arm (not shown in the figure); the water inlet 27 is immersed below the horizontal plane of the water tank, so that a sealed space is formed in the impeller assembly, and the bottom shell 25 of the impeller assembly is kept at a certain distance from the bottom of the water tank 10; in order to stabilize the impeller assembly, the impeller assembly is fixedly connected to the bottom of the water tank 10 through a bracket 50.

[0032] like Figure 3 and Figure 4 As shown, the inner side of the top shell 26 is provided with an arc-shaped guide groove, and the arc-shaped guide groove is provided on the periphery of the bottom surface of the top shell, as shown in FIG. Figure 4 In the direction indicated by the arrow shown in the figure, a retaining wall 30 perpendicular to the top shell is arranged at the end of the arc-shaped guide groove, and the retaining wall 30 extends upward to the edge of the water outlet, and the water thrown out by the centrifugal impeller 24 rotates along Figure 4The water flows in the direction of the arrow shown and reaches the baffle 30 under the guidance of the arc-shaped guide groove, and the baffle 30 guides the water flow upward and flows out from the water outlet. The water outlet is arranged on the top of the top shell 26 and extends an interface 29 connected to the spray arm, and the spray arm rotates 360 degrees relative to the water outlet to spray.

[0033] When in use, the motor 21 works, the centrifugal impeller 24 is connected to the motor shaft 23, and the centrifugal impeller 24 rotates under the drive of the motor shaft, so that the water in the water tank is sucked from the water inlet 27 into the bottom shell 25 from the bottom to the top, and thrown from the water outlet 28 of the top shell 26 from the bottom to the spray arm. Therefore, the spray arm can be arranged vertically, so that the height of the water flow spraying can be higher, and the water flow falls from top to bottom, which makes it easier to clean the utensils in the water tank.

[0034] The dishwasher structure realized by the present invention has no water pipes at the water inlet and the water outlet. The water inlet is submerged below the water level of the water tank. The circulating water for circulating cleaning is directly drawn from the water tank through the water inlet. The water outlet direction is consistent with the water inlet direction. The water outlet is directly connected to the spray arm. The structure of the water pump is simple. Because the entire water circuit is not provided with water pipes, the problem of pipe blockage and difficulty in cleaning that is common in existing dishwashers is avoided. The water pump motor is arranged under the water tank, which is simple to replace and easy to adjust the power. The water pump is easy to adopt the traditional mechanical sealing process, and the sealing performance is reliable and the process versatility is strong.

[0035] Embodiment 2

[0036] A second embodiment of the present invention provides a dishwasher, which includes the dishwasher structure described in the first embodiment. The structure of the dishwasher is the same as that of the first embodiment, and will not be described in detail herein.

[0037] The preferred embodiments of the present invention are described above with reference to the accompanying drawings, but the scope of the present invention is not limited thereby. Any modification, equivalent substitution and improvement made by those skilled in the art without departing from the scope and essence of the present invention shall be within the scope of the present invention.

Claims

1. A dishwasher structure, comprising a water tank, a water pump, the water pump comprising a motor and an impeller assembly, the motor being connected to the impeller assembly via a motor shaft; characterized in that: The impeller assembly is arranged in the water tank, and the impeller assembly includes a bottom shell, a top shell, and a centrifugal impeller. The top shell is in an inverted U shape, the bottom shell is in a U shape, the top shell and the bottom shell have the same radius and are interlocked with each other, and the centrifugal impeller is arranged in the space formed by the bottom shell and the top shell; an opening is arranged on the bottom of the bottom shell as a water inlet, and a water outlet is arranged on the top of the top shell, and the water outlet is connected to the spray arm; an arc-shaped guide groove is arranged on the inner side of the top shell, and a retaining wall perpendicular to the top shell is arranged at the end of the arc-shaped guide groove, and the retaining wall extends upward to the edge of the water outlet, so that the water outlet direction is consistent with the water inlet direction and the direction of the axis of the centrifugal impeller; the water inlet is immersed below the horizontal plane of the water tank and keeps a certain distance from the bottom of the water tank; the hub of the centrifugal impeller is connected to the motor shaft, and the centrifugal impeller rotates under the drive of the motor shaft, sucking the water in the water tank from the water inlet from the bottom to the top into the bottom shell, and throwing it out from the water outlet of the top shell from the bottom to the top to the spray arm.

2. The dishwasher structure according to claim 1, characterized in that: An opening is arranged at the bottom of the water tank, a motor of the water pump is arranged outside the water tank, the motor shaft passes through the opening at the bottom of the water tank to connect with the impeller assembly, and the motor shaft is sealed with the bottom of the water tank.

3. The dishwasher structure according to claim 1 or 2, characterized in that: The centrifugal impeller includes a layer of blades.

4. The dishwasher structure according to claim 1, characterized in that: The water inlet is a circular opening with a diameter larger than the motor shaft and is arranged in the center of the bottom shell. The top end of the motor shaft passes through the water inlet and is connected to the hub of the centrifugal impeller.

5. The dishwasher structure according to claim 1, characterized in that: The water outlet is arranged on the top of the top shell and extends out an interface connected with the spray arm.

6. The dishwasher structure according to claim 1, characterized in that: The impeller assembly is fixedly connected to the bottom of the water tank through a bracket.

7. The dishwasher structure according to claim 1 or 5, characterized in that: The spray arm rotates 360 degrees relative to the water outlet to spray.

8. A dishwasher, characterized in that: The dishwasher comprises the dishwasher structure according to any one of claims 1-7.

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