Dishwasher

Abstract

This application discloses a dishwasher, which includes a metal inner tub, an insulating member, and a metal outer shell. The metal inner tub is adapted to be connected to an external ground wire. The insulating member is connected to the metal inner tub. The metal outer shell surrounds the metal inner tub and is connected to the insulating member. The insulating member is disposed between the metal inner tub and the metal outer shell. By disposing of the insulating member between the metal inner tub and the metal outer shell, and by connecting the metal outer shell to the insulating member and the insulating member to the metal inner tub, even if the metal inner tub is energized and the grounding is unreliable when the dishwasher is turned off, the insulating member effectively separates the metal outer shell and the metal inner tub, thus preventing the metal outer shell from becoming energized due to the connection between them, thereby improving safety.

Description

Technical Field

[0001] This application relates to the field of kitchen appliance technology, and in particular to a dishwasher. Background Technology

[0002] Some dishwashers have metal inner tubs. Since the metal inner tub comes into contact with water and the dishwasher operates with electricity, the metal inner tub needs to be grounded to avoid endangering personal safety. However, some households do not have a ground wire or the grounding is unreliable. When the dishwasher is turned off and running, users may be at risk of electric shock if they touch the metal outer shell of the dishwasher. Utility Model Content

[0003] This application aims to at least partially solve one of the technical problems in the related art. To this end, this application proposes a dishwasher.

[0004] To achieve the above objectives, this application discloses a dishwasher, the dishwasher comprising:

[0005] A metal liner, the metal liner being adapted to be connected to an external ground wire;

[0006] An insulating element, said insulating element being connected to the metal liner; and

[0007] A metal outer shell surrounds the metal inner liner and is connected to the insulating component, wherein the insulating component is disposed between the metal inner liner and the metal outer shell.

[0008] In some embodiments of this application, the insulating element includes a first insulating element and a second insulating element, the first insulating element connecting the metal inner liner and the metal outer shell, the second insulating element connecting the metal inner liner and the metal outer shell, and the first insulating element and the second insulating element being arranged alternately.

[0009] In some embodiments of this application, the first insulating member is connected to the front side of the metal liner, and the second insulating member is connected to the rear side of the metal liner.

[0010] In some embodiments of this application, the metal liner includes a top plate, a left side plate, a right side plate, and a back plate, wherein the first insulating member extends along the top plate, the left side plate, and the right side plate, and connects the top plate, the left side plate, and the right side plate.

[0011] In some embodiments of this application, the second insulating member extends along the top, left and right sides of the back plate and connects the top, left and right sides of the back plate.

[0012] In some embodiments of this application, the second insulating member and the top, left and right sides of the back plate are plugged in.

[0013] In some embodiments of this application, the first insulating member is a one-piece molded member; and / or, the second insulating member is a one-piece molded member.

[0014] In some embodiments of this application, the dishwasher further includes a base, the metal inner liner is mounted on the base, and the first insulating member and the second insulating member extend downward and are respectively connected to the base.

[0015] In some embodiments of this application, the dishwasher further includes a heater adapted to heat water, the heater being connected to a live wire and a neutral wire, and the live wire and the neutral wire are respectively provided with electrical control elements that can control the on / off state of the circuit.

[0016] In some embodiments of this application, the dishwasher further includes a washing pump adapted to drive water flow in circulation, a heater disposed inside the washing pump to heat the water flowing through the washing pump, and an electrical control element being a relay.

[0017] The technical solution of this application connects an insulating component to a metal outer shell, and the insulating component connects to a metal inner liner. When the dishwasher is turned off and running, even if the metal inner liner is electrified and the grounding is unreliable, the insulating component connects the metal outer shell and the metal inner liner, which is equivalent to the insulating component separating the metal outer shell and the metal inner liner. Therefore, the electrification of the metal inner liner will not cause the metal outer shell to become electrified, thus improving the safety of use.

[0018] Other advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description or may be learned by practice of this application. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other designs can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of a dishwasher in some embodiments;

[0021] Figure 2 Here are exploded views of the dishwasher in some embodiments;

[0022] Figure 3 This is a schematic diagram showing the assembly of the metal inner liner, insulating component, and metal outer shell in some embodiments;

[0023] Figure 4 This is a schematic diagram showing the interaction between the heater and electrical control components in some embodiments.

[0024] Explanation of icon numbers:

[0025] Metal inner liner 100, top plate 110, left side plate 120, back plate 130, insulating component 200, first insulating component 210, second insulating component 220, metal outer shell 300, middle plate 310, hanging plate 320, base 400, heater 500, live wire 510, neutral wire 520, electrical control components 600, external ground wire 700.

[0026] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0028] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0029] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0030] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0031] This application discloses a dishwasher, which in some embodiments combines Figures 1 to 4 As shown, the dishwasher includes a metal inner tank 100, an insulating member 200, and a metal outer shell 300. The metal inner tank 100 is adapted to be connected to an external ground wire 700. The insulating member 200 is connected to the metal inner tank 100. The metal outer shell 300 surrounds the metal inner tank 100 and is connected to the insulating member 200. The insulating member 200 is disposed between the metal inner tank 100 and the metal outer shell 300.

[0032] An insulating element 200 is disposed between the metal inner liner 100 and the metal outer shell 300, and the metal outer shell 300 is connected to the insulating element 200. The insulating element 200 is connected to the metal inner liner 100. When the dishwasher is turned off and running, even if the metal inner liner 100 is energized and the grounding is unreliable, the metal outer shell 300 and the metal inner liner 100 are connected by the insulating element 200, which is equivalent to the insulating element 200 separating the metal outer shell 300 and the metal inner liner 100. Therefore, the energization of the metal inner liner 100 will not cause the metal outer shell 300 to become energized, thus improving the safety of use.

[0033] Specifically, the dishwasher includes a metal inner tank 100, a dish rack, a water cup, a spray arm, a washing pump, a heater 500, and a metal outer casing 300.

[0034] The metal inner tank 100 has a washing chamber (i.e., the internal space of the metal inner tank 100) inside, and the metal inner tank 100 is provided with an opening that communicates with the washing chamber. The dishwasher door can move between an open position and a closed position. When the door moves to the closed position, the opening is closed, and when the door moves to the open position, the opening is opened. Usually, the door is designed to be rotatable, so that the opening can be opened and closed in a rotatable manner.

[0035] The dish rack is installed within the metal inner tank 100 and can slide in and out of the washing chamber for easy loading and unloading of tableware. The dish rack typically has a perforated structure to allow water to flow through and rinse the tableware placed on it. Tableware should be understood as items that can be washed by a dishwasher, including but not limited to bowls, plates, cups, pots, knives, forks, and chopsticks. The metal outer shell 300 surrounds the metal inner tank 100 to form the outer structure, providing protection and aesthetic appeal.

[0036] The spray arm is used to spray water into the washing chamber, and the water is directed at the dishes to rinse them. In other words, during the dishwasher's washing cycle, water is sprayed from the spray arm to clean the dishes. There are several types of spray arms. Some can be movable, moving while spraying water to enhance the rinsing of the dishes; others can be stationary, spraying water at a fixed angle.

[0037] The spraying of water by the spray arms is achieved through the operation of the washing pump. The washing pump is connected to a water cup, which is located at the bottom of the metal inner tank 100 for temporary water collection and storage. The washing pump draws water from the water cup and delivers it to the spray arms. The water sprays out from the spray arms, rinses the dishes, and then falls back to the bottom of the metal inner tank 100, flowing back into the water cup and being drawn in by the washing pump again. This creates a washing cycle to clean the dishes. During the washing cycle, the water flow is heated by a heater 500. The heater 500 is powered on and generates heat, raising the water temperature to improve the cleaning effect on the dishes.

[0038] Normally, the heater 500 is in direct contact with the water flow to heat it. Although the heater 500 is in direct contact with the water flow, its structure ensures that there is insulation between them. Even if the heater 500 is energized, the water flow will not become electrified, thus preventing the metal inner tank 100 from becoming electrified. However, the heater 500 may experience insulation failure, such as aging leading to damage. If the insulation of the heater 500 fails, the heater 500 will electrify the water flow during operation. This electrification will then electrify the metal inner tank 100. Since the metal outer shell 300 of the current dishwasher is connected to / in contact with the metal inner tank 100, electrification of the metal inner tank 100 will electrify the metal outer shell 300.

[0039] Therefore, the metal inner tub 100 needs to be connected to the external ground wire 700, which refers to the ground wire in the installation environment / user's home where the dishwasher is located. Typically, dishwashers have an internal ground wire connected to the metal inner tub 100, either directly or indirectly. During dishwasher installation or when connected to a power outlet, the internal ground wire and external ground wire 700 are connected. If the heater 500's insulation fails, causing the metal inner tub 100 to become energized, the current can be discharged to the ground through the internal and external ground wires 700. However, there are situations where the user's home lacks an external ground wire 700, or the external ground wire 700's grounding is unreliable. In such cases, even if the internal and external ground wires 700 are connected, the current cannot be smoothly conducted to the ground, causing the metal outer casing 300 to become energized, posing a risk of electric shock.

[0040] Therefore, in this embodiment, the dishwasher also includes an insulating component 200, the material of which includes, but is not limited to, plastic, ceramic, etc. The insulating component 200 is disposed between the metal inner liner 100 and the metal outer shell 300. The metal outer shell 300 is connected to the insulating component 200, and the insulating component 200 is connected to the metal inner liner 100. The metal outer shell 300 is indirectly connected to the metal inner liner 100 through the insulating component 200, thereby supporting and surrounding the metal inner liner 100. The insulating component 200 separates the metal outer shell 300 and the metal inner liner 100, so even if the metal inner liner 100 becomes electrified, the metal outer shell 300 will not become electrified, thus improving safety. For example, the insulating component 200 protrudes relative to the outer surface of the metal inner liner 100 and relative to the inner surface of the metal outer shell 300. That is, the insulating component 200 has a certain thickness, which lays the foundation for connection with the metal outer shell 300 and the metal inner liner 100. At the same time, it can ensure that a certain gap is formed between the metal outer shell 300 and the metal inner liner 100 after the metal outer shell 300, the insulating component 200 and the metal inner liner 100 are connected and fixed, so as to avoid contact between the metal outer shell 300 and the metal inner liner 100.

[0041] It is understandable that the above text introduced the insulation failure of heater 500, which caused the metal inner tank 100 to become electrified. However, the electrification of the metal inner tank 100 is not limited to the insulation failure of heater 500. It can also be caused by other reasons, which will not be elaborated here.

[0042] In some embodiments, combined with Figure 1 and Figure 2 As shown, the insulating component 200 includes a first insulating component 210 and a second insulating component 220. The first insulating component 210 connects the metal inner liner 100 and the metal outer shell 300, and the second insulating component 220 connects the metal inner liner 100 and the metal outer shell 300. The first insulating component 210 and the second insulating component 220 are arranged alternately. The metal outer shell 300 has a certain size to surround the metal inner liner 100. By setting the alternating first insulating component 210 and the second insulating component 220, while achieving good support for the metal outer shell 300 and ensuring a certain distance between the metal outer shell 300 and the metal inner liner 100, the size / volume of the first insulating component 210 and the second insulating component 220 can be reduced, thereby reducing costs.

[0043] In some embodiments, combined with Figure 1 and Figure 2As shown, the first insulating member 210 is connected to the front side of the metal inner liner 100, and the second insulating member 220 is connected to the rear side of the metal inner liner 100. As mentioned above, the metal inner liner 100 has an opening communicating with the washing chamber. The opening is used for opening and closing the door. In this text, the direction of the opening is considered the front, and the side of the metal inner liner 100 away from the opening is considered the rear. The wall of the metal inner liner 100 is a thin-walled structure. Given the opening, the front structural strength of the metal inner liner 100 is relatively insufficient. Therefore, in this embodiment, the first insulating member 210 is connected to the front side of the metal inner liner 100. Through the action of the first insulating member 210, the structural strength of the front side of the metal inner liner 100 can be strengthened. Even with an opening in the metal inner liner 100, the front side of the metal inner liner 100 is less prone to deformation, thus better fitting the door. With the front side of the metal inner liner 100 connected to the first insulating member 210, the rear side of the metal inner liner 100 is connected to the second insulating member 220. This ensures that the first insulating member 210 and the second insulating member 220 are arranged alternately. The second insulating member 220 can also strengthen the structural strength of the rear side of the metal inner liner 100. Through the arrangement of the first insulating member 210 and the second insulating member 220, the overall structural strength of the metal inner liner 100 is enhanced, ensuring support for the metal outer shell 300.

[0044] See Figure 1 and Figure 2 As shown, the metal liner 100 includes a top plate 110, a left side plate 120, a right side plate, and a back plate 130. The top plate 110, left side plate 120, right side plate, and back plate 130 can be separate components connected and fixed, or at least two can be an integral structure. In this embodiment, the top plate 110, left side plate 120, and right side plate are an integral structure in an inverted U-shape. The back plate 130 is connected to the rear side of the top plate 110, left side plate 120, and right side plate, and the periphery of the back plate 130 protrudes relative to the top plate 110, left side plate 120, and right side plate. This arrangement facilitates the manufacturing of the metal liner 100. The metal outer shell 300 can also be configured similarly. The metal outer shell 300 has an integrally formed inverted U-shaped middle plate 310 corresponding to the top plate 110, left side plate 120, and right side plate, and a hanging plate 320 corresponding to the back plate 130. The middle plate 310 and the hanging plate 320 cooperate to surround the metal liner 100.

[0045] When the first insulating member 210 is connected to the front side of the metal inner liner 100, the first insulating member 210 extends along the top plate 110, the left side plate 120, and the right side plate. At this time, the first insulating member 210 also forms an inverted U-shaped structure, thereby correspondingly connecting the top plate 110, the left side plate 120, and the right side plate, and strengthening the structural strength of the front side of the metal inner liner 100. The connection method between the first insulating member 210 and the front side of the metal inner liner 100 includes, but is not limited to, at least one of plug-in connection, screw connection, and welding.

[0046] When the second insulating member 220 is connected to the rear side of the metal inner liner 100, since the periphery of the back plate 130 protrudes relative to the top plate 110, the left side plate 120, and the right side plate, the second insulating member 220 can extend along the top, left, and right sides of the back plate 130. In this case, the second insulating member 220 also forms an inverted U-shaped structure, thereby correspondingly connecting the top, left, and right sides of the back plate 130 and strengthening the structural strength of the rear side of the metal inner liner 100. The connection method between the second insulating member 220 and the back plate 130 includes, but is not limited to, at least one of plug-in connection, screw connection, and welding. For example, the second insulating member 220 may have slots corresponding to the top, left, and right sides of the back plate 130. The second insulating member 220 can be first fixed to the back plate 130 by plugging in, and then tightened by screwing.

[0047] The connection methods between the metal casing 300 and the first insulating member 210 and the second insulating member 220 include, but are not limited to, at least one of plug-in connection, screw connection and welding.

[0048] The first insulating component 210 extends along the top plate 110, the left side plate 120 and the right side plate to form an inverted U-shaped structure. Therefore, the first insulating component 210 can be designed as an integrally molded component, that is, the first insulating component 210 is manufactured by an integral molding process. For example, the first insulating component 210 is integrally molded from plastic to form an inverted U-shaped structure, which not only achieves the connection with the top plate 110, the left side plate 120 and the right side plate, but also reduces the number of parts and lowers the cost.

[0049] Similarly, the second insulating member 220 extends along the top, left and right sides of the back plate 130 to form an inverted U-shaped structure. Therefore, the second insulating member 220 can be designed as an integrally molded part, that is, the second insulating member 220 is manufactured by an integral molding process. For example, the second insulating member 220 is integrally molded from plastic to form an inverted U-shaped structure, which not only achieves the connection with the top, left and right sides of the back plate 130, but also reduces the number of parts and lowers the cost.

[0050] In some embodiments, combined with Figure 1 and Figure 2 As shown, the dishwasher also includes a base 400, a metal inner liner 100 mounted on the base 400, and a first insulating member 210 and a second insulating member 220 extending downward and respectively connected to the base 400.

[0051] The base 400 serves as the supporting foundation for the dishwasher, supporting other parts of the dishwasher. The dishwasher is supported on a supporting plane via the base 400. For example, when the dishwasher is placed on the ground, the base 400 contacts the ground. In this embodiment, the metal inner liner 100 is installed on the base 400 and thus supported by the base 400. It can be understood that the metal inner liner 100 may include a bottom plate located at the bottom, or the bottom of the metal inner liner 100 may be open and enclosed by the base 400 when installed. Based on the provision of the first insulating member 210 and the second insulating member 220, the first insulating member 210 and the second insulating member 220 are also connected to the base 400. This not only ensures a fixed connection between the metal inner liner 100 and the base 400, but also further enhances the overall structural strength. For example, one end of the first insulating member 210 extends downward from the left side plate 120 to the base 400 and is screwed to the base 400, and the other end of the second insulating member 220 extends downward from the right side plate to the base 400 and is screwed to the base 400. Similarly, the second insulating member 220 is also screwed to the base 400.

[0052] In some embodiments, combined with Figure 4 As shown, the dishwasher also includes a heater 500, which is used to heat the water flow. The heater 500 is connected to a live wire 510 and a neutral wire 520. An electrical control element 600 that can control the on / off state of the circuit is provided on the live wire 510 and the neutral wire 520.

[0053] As described above, the heater 500 is used to heat the circulating water to form hot water for washing. When heating the circulating water is stopped, the power supply to the heater 500 needs to be disconnected. Therefore, in this embodiment, electrical control elements 600 that can control the on / off state of the circuit are provided on the live wire 510 and neutral wire 520 connected to the heater 500 (in this embodiment, the live wire 510 and neutral wire 520 refer to the internal wiring of the dishwasher). The electrical control elements 600 are connected to the main control board, and the main control board controls the electrical control elements 600 to connect and disconnect the circuit. To facilitate the control of the electrical control elements 600, the electrical control elements 600 can be relays.

[0054] When the heater 500 needs to operate, the electrical control element 600 on the live wire 510 and the neutral wire 520 connects the circuit. When the heater 500 needs to stop operating, the electrical control element 600 on the live wire 510 and the neutral wire 520 disconnects the circuit. It is understandable that in some households, the live and neutral wires may be reversed. If the electrical control element 600 is only installed on the neutral wire 520 or the live wire 510, even if the corresponding electrical control element 600 is disconnected, there is still a risk of electric shock due to the reversed connection of the live and neutral wires in the household. Therefore, in this embodiment, electrical control elements 600 are installed on both the live wire 510 and the neutral wire 520 connected to the heater 500. When the electrical control element 600 on the live wire 510 and the neutral wire 520 is disconnected, even if the live and neutral wires in the household are reversed, electric shock can be avoided, reducing the risk of electric shock.

[0055] As can be seen from the above, the circulating water flow is powered by the washing pump, and the heater 500 can be integrated into the washing pump, so that the heater 500 is located inside the washing pump. When the water flows through the washing pump, it can be heated by the heater 500, which not only heats the water flow, but also makes the structure more compact.

[0056] The above description is merely a preferred embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A dishwasher, characterized in that, The dishwasher includes: A metal liner (100) adapted to be connected to an external ground wire (700); An insulating element (200) is connected to the metal liner (100); and A metal outer shell (300) surrounds the metal inner liner (100) and is connected to the insulating member (200), the insulating member (200) being disposed between the metal inner liner (100) and the metal outer shell (300).

2. The dishwasher as described in claim 1, characterized in that, The insulating element (200) includes a first insulating element (210) and a second insulating element (220). The first insulating element (210) connects the metal inner liner (100) and the metal outer shell (300), and the second insulating element (220) connects the metal inner liner (100) and the metal outer shell (300). The first insulating element (210) and the second insulating element (220) are arranged alternately.

3. The dishwasher as described in claim 2, characterized in that, The first insulating member (210) is connected to the front side of the metal liner (100), and the second insulating member (220) is connected to the rear side of the metal liner (100).

4. The dishwasher as described in claim 3, characterized in that, The metal liner (100) includes a top plate (110), a left side plate (120), a right side plate, and a back plate (130). The first insulating member (210) extends along the top plate (110), the left side plate (120), and the right side plate, and connects the top plate (110), the left side plate (120), and the right side plate.

5. The dishwasher as described in claim 4, characterized in that, The second insulating member (220) extends along the top, left and right sides of the back plate (130) and connects the top, left and right sides of the back plate (130).

6. The dishwasher as described in claim 5, characterized in that, The second insulating member (220) and the back plate (130) are inserted into the top, left and right sides.

7. The dishwasher as described in claim 3, characterized in that, The first insulating member (210) is a one-piece molded part, and / or the second insulating member (220) is a one-piece molded part.

8. The dishwasher as described in claim 2, characterized in that, The dishwasher also includes a base (400), the metal inner liner (100) is mounted on the base (400), and the first insulating member (210) and the second insulating member (220) extend downward and are respectively connected to the base (400).

9. The dishwasher as described in claim 1, characterized in that, The dishwasher also includes a heater (500) adapted to heat water. The heater (500) is connected to a live wire (510) and a neutral wire (520). The live wire (510) and the neutral wire (520) are respectively provided with electrical control elements (600) that can control the on and off of the circuit.

10. The dishwasher as described in claim 9, characterized in that, The dishwasher also includes a washing pump adapted to drive water flow in circulation, a heater (500) disposed inside the washing pump to heat the water flowing through the washing pump, and an electrical control element (600) being a relay.

Images