Electric water heater

Abstract

The present invention discloses an electric water heater, comprising a shell, an inner tank and a heat preservation member arranged in the shell, the upper part of the inner tank being embedded in the heat preservation member, and a foaming cavity being formed between the shell, the bottom end surface of the heat preservation member, and the inner tank located below the heat preservation member. The provision of the heat preservation member can, on the one hand, effectively avoid problems such as deformation or displacement of components caused by foaming, thereby improving the refined stability of the product, and on the other hand, can also improve the overall heat preservation performance of the product.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and in particular to an electric water heater. Background Art

[0002] As a type of electric water heater, small kitchen water heaters are widely used in kitchens, bathrooms and other places because of their advantages such as fast heating speed and small size. The existing small kitchen water heaters mainly have the following two structural forms:

[0003] 1. The structure of a small kitchen appliance with insulation layers at the front and back: This type of small kitchen appliance includes an outer shell, an insulation layer, an inner liner and other components. The inner part of the outer shell forms an installation cavity, the insulation layer is arranged in the installation cavity, and the inner part of the insulation layer forms an inner cavity for installing the inner liner and electrical components. The disadvantage of this structure is that there is a gap between the insulation layer and the outer shell, and water will penetrate into the inner cavity through the gap, which will have an adverse effect on the inner liner, internal electrical components and other components; when repairing, the outer shell and the insulation layer need to be opened at the same time to repair the internal components, which is inconvenient to repair.

[0004] 2. Overall foaming type small kitchen treasure structure: This type of small kitchen treasure needs to use foaming tooling to form a foaming layer inside the shell, and an inner liner is arranged inside the foaming layer. The electrical room is formed by a separate plastic part, and the electrical room plastic part is arranged in the shell. The disadvantages of this structure are: due to the existence of the electrical room plastic part, the thermal insulation effect of the entire small kitchen treasure is poor; after foaming, the front shell, the rear shell, and the electrical room are prone to deformation, resulting in the difficulty of installing the maintenance cover on the electrical room, and the overall refinement of the product is unstable.

[0005] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0006] In response to the problems pointed out in the background technology, the present invention proposes an electric water heater, wherein a thermal insulation component and a foaming cavity are provided between the outer shell and the inner tank, and the thermal insulation component is located at the upper part of the foaming cavity. On the one hand, it can effectively avoid problems such as deformation or displacement of components caused by foaming, thereby improving the refined stability of the product; on the other hand, it can also improve the overall thermal insulation performance of the product.

[0007] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0008] The present invention provides an electric water heater, comprising:

[0009] shell;

[0010] An inner liner, which is arranged in the outer shell;

[0011] A heat-insulating component is arranged in the outer shell, and the upper part of the inner liner is embedded in the heat-insulating component;

[0012] A foaming cavity is formed between the outer shell, the bottom end surface of the heat-insulating component, and the inner container located below the heat-insulating component.

[0013] In some embodiments of the present application, a mounting groove with an open bottom is provided in the thermal insulation component, an upper portion of the inner liner is located in the mounting groove, and an inner surface of the mounting groove is in close contact with the upper portion of the inner liner.

[0014] In some embodiments of the present application, the outer surface of the inner container is composed of a top arc surface, a bottom arc surface and a vertical circumferential side surface, the top arc surface is arranged at the top of the vertical circumferential side surface and is tangent thereto, and the bottom arc surface is arranged at the bottom of the vertical circumferential side surface and is tangent thereto;

[0015] The top arc surface is completely located in the installation groove, and the intersection of the top arc surface and the vertical peripheral side surface is flush with the bottom end surface of the thermal insulation component.

[0016] In some embodiments of the present application, the circumferential side surface of the thermal insulation component has a circumferential side end surface that is in close contact with the inner surface of the outer shell.

[0017] In some embodiments of the present application, the circumferential side end surface is adjacent to the bottom end surface of the thermal insulation component, and a portion of the circumferential side surface of the thermal insulation component located above the circumferential side end surface is retracted into the circumferential side end surface.

[0018] In some embodiments of the present application, a maintenance port is provided on the top of the housing, and a maintenance cover is provided at the maintenance port.

[0019] In some embodiments of the present application, a water receiving trough is provided on the housing at the maintenance port, the water receiving trough surrounds the maintenance port, and the maintenance cover is in close contact with an outer side wall of the water receiving trough.

[0020] In some embodiments of the present application, a connecting frame and a plurality of first clamping portions are provided on the shell at the maintenance port, a first screw hole is provided on the connecting frame, and a second clamping portion and a second screw hole are correspondingly provided on the maintenance cover, screws are passed through the first screw hole and the second screw hole, and the first clamping portion is clamped with the second clamping portion.

[0021] In some embodiments of the present application, the housing includes a front housing and a rear housing, the left and right sides and the bottom side of the front housing are respectively provided with a plurality of third screw holes, the bottom side of the front housing is further provided with a third clamping portion, the left and right sides and the bottom side of the rear housing are respectively provided with a plurality of fourth screw holes, the bottom side of the rear housing is further provided with a fourth clamping portion, screws are passed through the third screw holes and the fourth screw holes, and the third clamping portion is clamped with the fourth clamping portion;

[0022] A first notch is provided on the top of the front shell, and a second notch is provided on the top of the rear shell. The first notch and the second notch are butted together to form a maintenance opening.

[0023] In some embodiments of the present application, a groove portion is provided on the rear shell, and the fourth screw hole is located in the groove portion.

[0024] In some embodiments of the present application, the thermal insulation component is a foam component.

[0025] Compared with the prior art, the advantages and positive effects of the present invention are:

[0026] In the electric water heater disclosed in the present application, through the provision of the insulation component, the foaming chamber is formed by the outer shell, the bottom end surface of the insulation component, and the gap between the inner tank located below the insulation component. The foaming volume is small and the foaming pressure is small, which can effectively avoid problems such as overflow of the foaming material and positional displacement of components such as the inner tank due to the foaming pressure, thereby improving the refined stability of the product and facilitating the positioning and installation of subsequent products.

[0027] While the thermal insulation component forms the foaming cavity, its own thermal insulation performance also helps to improve the thermal insulation performance of the electric water heater.

[0028] The upper part of the inner liner is embedded in the thermal insulation component, so that the thermal insulation component does not occupy extra space in the outer shell, which is conducive to the compact design of the inner components of the outer shell and to achieving the miniaturization design goal of the product; at the same time, the thermal insulation component also plays a positioning and supporting role for the inner liner, further avoiding position displacement of the inner liner during the foaming process.

[0029] The design of arranging the heat-insulating parts inside the outer shell and on the inner tank in this embodiment overturns the conventional design concept of the existing electric water heaters. From the perspective of reducing the foaming volume and the foaming pressure, the refined stability of the product processing and molding is improved; at the same time, the advantages of heat preservation and compact design are taken into account.

[0030] Taking advantage of the easy processability of the insulation parts, the insulation parts can be easily differentiated in design for shells and inner tanks of different sizes and shapes, making them more applicable and able to be used on different types of electric water heaters.

[0031] In actual processing, it is difficult to ensure that there is absolutely no gap between the insulation part and the inner liner, and between the insulation part and the outer shell. Even if a small amount of foaming material overflows, the foaming material will cool and take shape after flowing along the insulation part for a short distance. Due to the positioning and supporting effect of the insulation part on the inner liner, the overflow of these small amounts of foaming materials will not affect the position deviation of the inner liner. On the contrary, these small amounts of foaming materials will further improve the stability of the fit between the insulation part and the outer shell, as well as the inner liner after cooling and taking shape.

[0032] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0034] Figure 1 is a schematic structural diagram of an electric water heater according to an embodiment as viewed from the side and front;

[0035] Figure 2 is a schematic structural diagram of an electric water heater according to an embodiment viewed from the side;

[0036] Figure 3 is a cross-sectional view of an electric water heater according to an embodiment;

[0037] Figure 4 It is a schematic structural diagram of the electric water heater according to the embodiment after omitting the front shell and the maintenance cover;

[0038] Figure 5 This is a schematic diagram of the structure of the electric water heater according to the embodiment after the maintenance cover is omitted;

[0039] Figure 6 A structural view of a thermal insulation member according to an embodiment as viewed from the side front;

[0040] Figure 7 is a schematic structural diagram of a thermal insulation component according to an embodiment as viewed from the rear side;

[0041] Figure 8 is a schematic structural diagram of a thermal insulation component according to an embodiment observed from the bottom side;

[0042] Fig. 9 is a schematic structural diagram of a rear housing according to an embodiment;

[0043] Fig.10 is a schematic structural diagram of a front shell according to an embodiment;

[0044] Fig.11 It is a schematic structural diagram of the maintenance cover according to the embodiment observed from the bottom side.

[0045] Reference numerals:

[0046] 100-insulation part, 110-electrical room, 111-first installation position, 112-second installation position, 113-third installation position, 114-fourth installation position, 115-opening, 120-circumferential side end surface, 131-first inner shrinkage surface, 132-second inner shrinkage surface, 140-arc surface, 151-first guide groove, 152-second guide groove, 153-third guide groove, 154-guide step, 155-stop step, 160-installation groove;

[0047] 200- liner, 210- top arc surface, 220- bottom arc surface, 230- vertical circumferential side surface;

[0048] 300-housing, 310-front housing, 311-third screw hole, 312-third clamping portion, 313-first notch, 320-rear housing, 321-fourth screw hole, 322-fourth clamping portion, 323-second notch, 324-groove portion, 330-maintenance port, 340-water tank, 351-water inlet hole, 352-water outlet hole, 360-connecting frame, 361-first screw hole, 370-first clamping portion, 380-bottom foot;

[0049] 400 - maintenance cover, 410 - second clamping portion, 420 - second screw hole, 431 - first opening, 432 - second opening;

[0050] 500-foaming cavity;

[0051] 610-heating tube, 620-water inlet pipe, 630-water outlet pipe, 640-thermostat, 650-indicator light, 660-knob. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0053] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0054] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0055] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0056] In the present invention, unless otherwise clearly stipulated and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0057] The disclosure below provides many different embodiments or examples to realize different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplicity and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0058] The electric water heater in this embodiment is particularly a small kitchen water heater, which includes conventional components such as a housing 300 , an inner tank 200 , a heating tube 610 , a water inlet pipe 620 , a water outlet pipe 630 , and a thermostat 640 , and also includes a heat preservation component 100 .

[0059] Reference Figures 1 to 4 The outer shell 300 is an approximately rectangular structure as a whole, and the internal cavity of the outer shell 300 is used to install the inner tank 200 and other components.

[0060] The outer shell 300 in this embodiment is in a vertical position, and the liner 200 is vertically placed in the outer shell 300 .

[0061] A heat-insulating component 100 is also disposed in the outer shell 300 . The heat-insulating component 100 is disposed on the upper portion of the inner liner 200 , and the upper portion of the inner liner 200 is embedded in the heat-insulating component 100 .

[0062] A foaming cavity 500 is formed between the outer shell 300 , the bottom end surface of the heat-insulating element 100 , and the inner liner 200 located below the heat-insulating element 100 .

[0063] In the prior art, the foaming cavity is usually formed by the gap between the outer shell and the inner liner. The foaming volume is large and the foaming pressure is high. During the foaming process, the foaming material is prone to overflow, and the inner liner and other components are easily displaced due to the foaming pressure, which affects the refined stability of the product after processing and molding, and is not convenient for the positioning and installation of subsequent components.

[0064] In the present application, through the provision of the thermal insulation component 100, the foaming cavity 500 is formed by the gap between the outer shell 300, the bottom end surface of the thermal insulation component 100, and the inner liner 200 located below the thermal insulation component 100. The foaming volume is small and the foaming pressure is small, which can effectively avoid problems such as overflow of the foaming material and position displacement of components such as the inner liner due to the foaming pressure, thereby improving the refined stability of the product and facilitating the positioning and installation of subsequent products.

[0065] While the thermal insulation element 100 forms the foaming cavity, its own thermal insulation performance also helps to improve the thermal insulation performance of the electric water heater.

[0066] The upper part of the inner liner 200 is embedded in the thermal insulation component 100, so that the thermal insulation component 100 does not occupy more extra space in the outer shell 300, which is conducive to the compact design of the inner components of the outer shell 300 and to achieving the miniaturization design goal of the product; at the same time, the thermal insulation component 100 also plays a positioning and supporting role for the inner liner 200, further avoiding position displacement of the inner liner 200 during the foaming process.

[0067] The design of disposing the heat preservation part 100 inside the outer shell 300 and on the inner tank 200 in this embodiment overturns the conventional design concept of the existing electric water heaters. From the perspective of reducing the foaming volume and the foaming pressure, the refined stability of the product processing and molding is improved; at the same time, the advantages of heat preservation and compact design are taken into consideration.

[0068] By utilizing the easy processability of the thermal insulation component 100, the thermal insulation component 100 can be easily differentiated in design for shells and inner tanks of different sizes and shapes, making it more applicable and capable of being applied to different types of electric water heaters.

[0069] In actual processing, it is difficult to ensure an absolutely seamless installation between the thermal insulation component 100 and the inner liner 200, and between the thermal insulation component 100 and the outer shell 300. Therefore, even if a small amount of foaming material overflows, the foaming material will cool and take shape after flowing along the thermal insulation component 100 for a short distance. However, due to the positioning and supporting effect of the thermal insulation component 100 on the inner liner 200, the overflow of these small amounts of foaming materials will not affect the position deviation of the inner liner 200. On the contrary, these small amounts of foaming materials will further improve the fit stability between the thermal insulation component 100 and the outer shell 300, as well as the inner liner 200 after cooling and taking shape.

[0070] In some embodiments of the present application, the thermal insulation component 100 may be a foam component, which has the advantages of thermal insulation and easy processing.

[0071] In some embodiments of the present application, refer to Figure 3 and Figure 8 The thermal insulation component 100 is provided with a mounting groove 160 with an open bottom, and the upper part of the inner liner 200 is located in the mounting groove 160. The inner surface of the mounting groove 160 is in close contact with the upper part of the inner liner 200, so that the thermal insulation component 100 and the inner liner 200 can be more reliably attached to each other, thereby improving the structural stability and preventing the foaming material from overflowing into the gap between the thermal insulation component 100 and the inner liner 200.

[0072] During installation, the thermal insulation component 100 can be directly buckled onto the top of the inner liner 200 .

[0073] Reference Figure 3 The inner liner 200 is a conventional approximately elliptical inner liner, and the outer surface of the inner liner 200 is composed of a top arc surface 210, a bottom arc surface 220 and a vertical circumferential side surface 230. The top arc surface 210 is arranged at the top of the vertical circumferential side surface 230 and is tangent to it (referring to the vertical circumferential side surface 230), and the bottom arc surface 220 is arranged at the bottom of the vertical circumferential side surface 230 and is tangent to it (referring to the vertical circumferential side surface 230).

[0074] The top arc surface 210 is completely located in the installation groove 160 , and the intersection of the top arc surface 210 and the vertical peripheral side surface 230 is flush with the bottom end surface of the thermal insulation component 100 .

[0075] The bottom end surface of the thermal insulation component 100 is not located on the top arc surface 210. On the one hand, the volume of the inner liner 200 embedded in the thermal insulation component 100 is increased as much as possible to improve the compact design effect; on the other hand, it is adapted to the shape of the top arc surface 210. When the thermal insulation component 100 is buckled on the top of the inner liner 200, it is easy to observe whether the thermal insulation component 100 is installed properly. If the thermal insulation component 100 is skewed, a gap will appear between the inner surface of the bottom of the installation groove 160 and the inner liner 200. This problem is easy to find during the installation process, thereby avoiding the foaming material from overflowing from this gap later.

[0076] Reference Figure 3 and Figure 7 The circumferential side surface of the heat preservation member 100 has a circumferential side end surface 120 that is in close contact with the inner surface of the shell 300 to ensure that the heat preservation member 100 and the shell 300 are in close contact, avoiding a gap between the two, thereby avoiding overflow.

[0077] The circumferential side end face 120 is only an annular side face surrounding the circumferential side surface of the thermal insulation component 100. There is no need to require that the entire circumferential side surface of the thermal insulation component 100 be in close contact with the inner surface of the outer shell. While ensuring the anti-overflow effect, it also reduces the processing requirements of the mating surface between the thermal insulation component 100 and the outer shell 300 to a certain extent, thereby improving the processing efficiency.

[0078] The circumferential side end surface 120 is adjacent to the bottom end surface of the thermal insulation component 100 , and the bottom end surface of the thermal insulation component 100 is the top surface of the foaming cavity 500 .

[0079] The portion of the circumferential side surface of the thermal insulation component 100 located above the circumferential side end face is retracted into the circumferential side end face, and the retracted portion makes way for other structures (such as the guide structure on the thermal insulation component, the wiring of electrical components, etc.).

[0080] In some embodiments of the present application, the thermal insulation component 100 also serves as an electrical room. An electrical room 110 is formed inside the thermal insulation component 100 for installing components such as a heating pipe 610, a water inlet pipe 620, a water outlet pipe 630, and a thermostat 640, thereby making full use of the thermal insulation component 100 and expanding its functional performance.

[0081] In conventional technology, the electrical room is usually made of a plastic part. Since the plastic part does not have heat preservation performance, the heat preservation performance of the electric water heater will be greatly reduced.

[0082] The heat preservation component 100 in this embodiment replaces the plastic component of the electrical room, and on the basis of meeting the installation requirements of electrical components, it also helps to improve the heat preservation performance of the electric water heater.

[0083] As for the internal design of the electrical room 110, an opening 115 which runs through from top to bottom is provided in the electrical room 110, and the heating pipe 610 extends out from the opening 115. A first installation position 111 for the water inlet pipe 620, a second installation position 112 for the water outlet pipe 630, and a third installation position 113 for the thermostat 640 are formed in the electrical room 110.

[0084] The first installation position 111 and the second installation position 112 are respectively through openings that pass through the thermal insulation component 100 from top to bottom, so that the water inlet pipe 620 led out from the inner tank 200 extends through the first installation position 111 and the water outlet pipe 630 extends through the second installation position 112 to be connected to an external water pipe.

[0085] The first installation position 111 and the second installation position 112 are symmetrically arranged at the rear of the insulation component 100. The electric water heater is generally placed against a wall, so that the water inlet pipe 620 and the water outlet pipe 630 can be as close to the wall as possible for easy installation.

[0086] The first mounting position 111 and the second mounting position 112 are both connected to the opening 115, that is, the through hole where the first mounting position 111 and the second mounting position 112 are located has one side that is open, which is convenient for the processing of the insulation component 100 on the one hand, and is equivalent to expanding the size of the opening 115 on the other hand, which is convenient for the installation of other components.

[0087] The opening 115 is disposed in the middle of the electrical room 110 , so that the opening 115 and the inner tank 200 below can be vertically aligned, which facilitates the installation of the heating tube 610 .

[0088] The third mounting position 113 is a groove structure, and the third mounting position 113 is arranged at the front side of the thermal insulation member 100. The knob 660 for controlling the temperature is arranged at the front side of the housing 300, which is convenient for the user to use, and the thermostat 640 is arranged in the third mounting position 113 at the front side, which can reduce the connection line between the thermostat 640 and the knob 660.

[0089] The electrical room 110 is also provided with a fourth installation position 114 for installing the indicator light 650 of the electric water heater. The fourth installation position 114 is arranged on the front side of the insulation component 100. The outer shell 300 is usually provided with a light-transmitting portion for the light emitted by the indicator light 650 to pass through. The front placement of the indicator light 650 means that the user can observe the status of the indicator light from the front side of the electric water heater, which is convenient for the user to use.

[0090] The layout of the various installation positions in the electrical room 110 fully utilizes the existing structure of the thermal insulation component 100 and also achieves the purpose of easy installation and user use.

[0091] The specific shape of each position in the electrical room 110 is determined according to the size and shape of each related component.

[0092] In some embodiments of the present application, the thermal insulation component 100 also has a diversion function to improve the waterproof performance of the electric water heater.

[0093] Specifically, refer to Figures 4 to 6 The shell 300 is provided with a water inlet hole 351 and a water outlet hole 352 , and the heat preservation element 100 is provided with a flow guide structure, and the water flowing in from the water inlet hole 351 flows out from the water outlet hole 352 through the flow guide structure.

[0094] In this embodiment, the electric water heater takes a small kitchen water heater as an example. Since the small kitchen water heater is generally installed under the kitchen sink or the bathroom wash basin, water drops generally fall on the top of the shell 300, and water flows into the shell 300 from top to bottom through the water inlet hole 351. Since the thermal insulation component 100 is placed on the top, the guide structure on the thermal insulation component 100 guides the infiltrated water, and guides the infiltrated water to the water outlet hole 352, and then discharges the shell 300, effectively preventing the infiltrated water from continuing to flow downward and causing adverse effects on internal structures such as the inner tank 200 and the foaming layer, thereby improving the waterproof performance of the electric water heater.

[0095] By properly arranging the positions of the water inlet hole 351 and the water outlet hole 352 , it is also possible to effectively avoid the adverse effects of water seepage on the electrical components in the electrical room 110 .

[0096] In some embodiments of the present application, the water inlet 351 is disposed at the top of the housing 300 and close to the front side of the housing 300 , and the water outlet 352 is disposed at the rear side of the housing 300 .

[0097] The water flowing in from the water inlet hole 351 flows through the top, side and rear of the thermal insulation component 100 in sequence under the action of the guide structure, and then flows out from the water outlet hole 352 .

[0098] By setting the water inlet hole 351 and the water outlet hole 352 , the water flow path completely avoids the electrical room 110 , thereby effectively preventing the adverse effects of water seepage on the electrical components in the electrical room 110 .

[0099] The rear water outlet 352 realizes rear side drainage, which is convenient for collecting and processing the drainage without affecting the hygiene of users.

[0100] There are two water inlet holes 351 and one water outlet hole 352, and the two water inlet holes 351 are respectively arranged on both sides of the top of the housing 300. Seepage water flows in from the two water inlet holes 351, and then flows from both sides of the thermal insulation component 100 to the water outlet holes 352 at the rear side, and is collected and then discharged together, thereby improving the performance of collecting falling water and draining water.

[0101] In some embodiments of the present application, refer to Figure 7 The guide structure includes a first guide groove 151, a second guide groove 152 and a third guide groove 153. The first guide groove 151 is arranged at the top of the heat preservation element 100, the second guide groove 152 is arranged at the side of the heat preservation element 100, and the third guide groove 153 is arranged at the rear of the heat preservation element 100. The water inlet 351 is directly opposite to the first guide groove 151.

[0102] The water flowing in from the water inlet 351 flows through the first guide groove 151 , the second guide groove 152 , and the third guide groove 153 in sequence, and then flows out from the water outlet 352 .

[0103] In this way, the water flowing in from the water inlet 351 does not flow over a large area on the outer surface of the insulation component 100, but flows along the flow path defined by the first guide groove 151, the second guide groove 152 and the third guide groove 153, thereby improving the guide effect.

[0104] The top of the thermal insulation component 100 has a curved surface 140, which intersects with the side wall of the thermal insulation component 100. The first guide groove 151 is arranged on the curved surface 140 to facilitate water falling into the first guide groove 151 to flow into the second guide groove 152 on the side.

[0105] The outer surface of the housing 300 generally adopts a rounded corner design at the edges and corners, and the arc surface portion 140 also avoids interference with the rounded corner structure of the housing 300 .

[0106] Reference Figure 6 and Figure 7 The left and / or right side surfaces of the thermal insulation component 100 have a first retracted surface 131 and a portion of the circumferential side end surface 120. The first retracted surface 131 is located above the circumferential side end surface 120 and is retracted into the circumferential side end surface 120. A second guide groove 152 is formed between the first retracted surface 131 and the inner surface of the outer shell 300.

[0107] The rear side surface of the thermal insulation component 100 has a second retracted surface 132 and a portion of the circumferential side end surface 120 . The second retracted surface 132 is located above the circumferential side end surface 120 and is retracted into the circumferential side end surface 120 . A third guide groove 153 is formed between the second retracted surface 132 and the inner surface of the outer shell 300 .

[0108] The inner surface of the shell 300 actually serves as the side wall of the second guide groove 152 and the third guide groove 153 to achieve water blocking and diversion. In actual processing, the thermal insulation component 100 only needs to process an inner shrinkage surface on the circumferential side surface, which simplifies the processing of the thermal insulation component.

[0109] A guide step 154 ​​is provided on the first retracted surface 131 , and the guide step 154 ​​extends obliquely downward from the front side to the rear side of the thermal insulation component 100 . The guide step 154 ​​diverts water flowing down from the first guide groove 151 , thereby improving the guide effect on the side of the thermal insulation component 100 .

[0110] The second guide groove 152 and the guide step 154 ​​are respectively provided with a stop step 155 at one end close to the front side of the heat preservation component 100 to prevent the seepage water from flowing to the front side of the shell 300, but to flow to the water outlet hole 352 at the rear side for discharge.

[0111] In some embodiments of the present application, a plurality of feet 380 are provided at the bottom of the outer shell 300, and the height of the feet 380 located on the front side is higher than the height of the feet 380 located on the rear side. The design of the feet being higher in the front and lower in the back is to cooperate with the diversion structure to further improve the diversion effect and ensure that the seepage water is gathered from the front to the back to the water outlet 352 on the rear side.

[0112] In some embodiments of the present application, refer to Figure 1 and Figure 5 A maintenance opening 330 is provided on the top of the housing 300 , and a maintenance cover 400 is provided at the maintenance opening 330 .

[0113] The electric water heater in this embodiment is of top maintenance type, and the thermal insulation component 100 on the top can be seen by opening the maintenance cover 400.

[0114] Since the insulation part 100 is provided with an electrical room 110, the electrical room 110 is directly opposite to the maintenance port 330, the electrical components in the electrical room 110 can be repaired by opening the maintenance cover 400, without the need to remove the outer shell to repair the electrical components as in the prior art, which greatly improves the convenience of maintenance.

[0115] The maintenance cover 400 is provided with a first opening 431 for the water inlet pipe 620 to extend out, and a second opening 432 for the water outlet pipe 630 to extend out, so that there is no need to open a pipe outlet on the outer shell 300. As can be seen from the figure, the maintenance cover 400 covers most of the area of ​​the top of the outer shell 300, so that when the maintenance cover 400 is removed, the entire electrical room 110 can be completely exposed, which is convenient for the maintenance of internal components.

[0116] A water receiving groove 340 is provided on the housing 300 at the maintenance opening 330 . The water receiving groove 340 surrounds the maintenance opening 330 , and the maintenance cover 400 is closely attached to the outer wall of the water receiving groove 340 .

[0117] During long-term use of the electric water heater, water may seep in from the gap between the maintenance cover 400 and the water receiving tank 340 . The water receiving tank 340 receives the seeped water to prevent the water from directly dripping into the electrical room 110 .

[0118] When the water in the water receiving tank 340 is full, the water in the water receiving tank 340 can be sucked dry by using an absorbent towel or a rag.

[0119] In this embodiment, the water receiving groove 340 is combined with the guide structure on the insulation component 100, and the water inlet hole 351 is provided in the water receiving groove 340. The water that penetrates into the water receiving groove 340 through the gap at the maintenance cover 400 directly flows into the first guide groove 151 through the water inlet hole 351, and then flows through the second guide groove 152 and the third guide groove 153 in sequence, and then is discharged from the water outlet hole 352, thereby realizing a complete water path for receiving, guiding and draining water.

[0120] Reference Figure 5 The housing 300 is provided with a connecting frame 360 ​​and a plurality of first clamping parts 370 at the maintenance opening 330, and the connecting frame 360 ​​is provided with a first screw hole 361. Fig.11 The maintenance cover 400 is provided with a second clamping portion 410 and a second screw hole 420. Screws are inserted into the first screw hole 361 and the second screw hole 420, and the first clamping portion 370 is clamped with the second clamping portion 410 to achieve a fastening connection between the maintenance cover 400 and the housing 300.

[0121] The maintenance cover 400 can be connected to the housing 300 by a single screw, and the number of screws is small, which greatly reduces the disassembly process and time. In addition, through the clamping cooperation of the first clamping portion 370 and the second clamping portion 410, the fastening structure between the maintenance cover 400 and the housing 300 is more reliable.

[0122] In this embodiment, the first clamping portion 370 is a protruding structure facing the maintenance port 330 , and the second clamping portion 340 is a claw, and the protruding structure is adapted to be clamped with the groove structure on the claw.

[0123] In some embodiments of the present application, the housing 300 includes a front housing 310 and a rear housing 320 .

[0124] Reference Fig.10 , a plurality of third screw holes 311 are respectively provided on the left and right sides and the bottom side of the front shell 310, and a third clamping portion 312 is also provided on the bottom side of the front shell 310; Fig. 9 A plurality of fourth screw holes 321 are respectively provided on the left and right sides and the bottom side of the rear shell 320, and a fourth clamping portion 322 is also provided on the bottom side of the rear shell 320; screws are passed through the third screw holes 311 and the fourth screw holes 321, and the third clamping portion 312 is clamped with the fourth clamping portion 322 to achieve a fastened connection between the front shell 310 and the rear shell 320.

[0125] In this embodiment, the third clamping portion 312 is a claw structure, and the fourth clamping portion 322 is a clamping hole structure. During the installation process of the front shell 310 and the rear shell 320, the front shell 310 and the rear shell 320 are pre-positioned through the clamping between the third clamping portion 312 and the fourth clamping portion 322, which facilitates the subsequent installation of screws.

[0126] Reference Fig. 9 A groove portion 324 is provided on the rear shell 320, and the fourth screw hole 321 is located in the groove portion 324. The screws are driven in from the rear side of the outer shell 300, and the screws are not visible from the front side of the electric water heater, which makes the appearance more beautiful. The groove portion 324 shields and waterproofs the screws, thereby preventing the screws from rusting after being exposed to water for a long time, resulting in the situation that they cannot be disassembled.

[0127] A first notch 313 is disposed at the top of the front shell 310 , and a second notch 323 is disposed at the top of the rear shell 320 . After the front shell 310 and the rear shell 320 are connected, the first notch 313 and the second notch 323 are butted against each other to form a maintenance port 330 .

[0128] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0129] The above are only specific embodiments 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 a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An electric water heater, characterized in that: include: shell; An inner liner is arranged in the outer shell, the outer shell is in a vertically placed state, and the inner liner is vertically placed in the outer shell; A heat-insulating component is arranged in the outer shell, and the upper part of the inner liner is embedded in the heat-insulating component; A foaming cavity is formed between the outer shell, the bottom end surface of the heat-insulating component, and the inner container located below the heat-insulating component; The heat-insulating component is provided with a mounting groove with an open bottom, the upper portion of the inner liner is located in the mounting groove, and the inner surface of the mounting groove is in close contact with the upper portion of the inner liner; The outer surface of the inner container is composed of a top arc surface, a bottom arc surface and a vertical circumferential side surface, wherein the top arc surface is arranged at the top of the vertical circumferential side surface and is tangent thereto, and the bottom arc surface is arranged at the bottom of the vertical circumferential side surface and is tangent thereto; The top arc surface is completely located in the installation groove, and the intersection of the top arc surface and the vertical peripheral side surface is flush with the bottom end surface of the thermal insulation component.

2. The electric water heater according to claim 1, characterized in that: The heat-insulating member has a circumferential side end surface on its circumferential side surface that is in close contact with the inner surface of the shell.

3. The electric water heater according to claim 2, characterized in that: The circumferential side end surface is adjacent to the bottom end surface of the heat-insulating component, and a portion of the circumferential side surface of the heat-insulating component located above the circumferential side end surface is retracted into the circumferential side end surface.

4. The electric water heater according to claim 1, characterized in that: A maintenance opening is provided on the top of the shell, and a maintenance cover is provided at the maintenance opening.

5. The electric water heater according to claim 4, characterized in that: A water receiving trough is provided on the shell at the maintenance opening, the water receiving trough surrounds the maintenance opening, and the maintenance cover is in close contact with the outer side wall of the water receiving trough.

6. The electric water heater according to claim 4, characterized in that: A connecting frame and a plurality of first clamping parts are provided on the shell at the maintenance port, a first screw hole is provided on the connecting frame, a second clamping part and a second screw hole are correspondingly provided on the maintenance cover, screws are passed through the first screw hole and the second screw hole, and the first clamping part is clamped with the second clamping part.

7. The electric water heater according to any one of claims 1 to 6, characterized in that: The housing comprises a front housing and a rear housing, the left and right sides and the bottom side of the front housing are respectively provided with a plurality of third screw holes, the bottom side of the front housing is further provided with a third clamping portion, the left and right sides and the bottom side of the rear housing are respectively provided with a plurality of fourth screw holes, the bottom side of the rear housing is further provided with a fourth clamping portion, screws are passed through the third screw holes and the fourth screw holes, and the third clamping portion is clamped with the fourth clamping portion; A first notch is provided on the top of the front shell, and a second notch is provided on the top of the rear shell. The first notch and the second notch are butted together to form a maintenance opening.

8. The electric water heater according to any one of claims 1 to 6, characterized in that: The heat-insulating component is a foam component.

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