CN113108462A - Electric water heater - Google Patents

Abstract

The invention discloses an electric water heater, which comprises a shell, wherein an inner container and a heat insulation piece are arranged in the shell, the upper part of the inner container is embedded into the heat insulation piece, and a foaming cavity is formed among the shell, the bottom end surface of the heat insulation piece and the inner container positioned below the heat insulation piece. The setting of heat preservation piece can effectively avoid on the one hand because of the part deformation or the aversion scheduling problem that the foaming arouses, improves the stability that becomes more meticulous of product, and on the other hand also can improve the whole thermal insulation performance of product.

Description

Electric water heater

Technical Field

The invention relates to the technical field of household appliances, in particular to an electric water heater.

Background

The small kitchen appliance is used as a type of electric water heater, and is widely applied to occasions such as kitchens, toilets and the like because of the advantages of high heating speed, small volume and the like. The existing small kitchen appliance mainly has the following two structural forms:

1. the front and the back of the small kitchen appliance are provided with heat-insulating layers in a structure form: this kind of little kitchen is precious includes components such as shell, heat preservation, inner bag, and the installation cavity is formed to the inside of shell, and the installation cavity is located to the heat preservation, and the inside of heat preservation forms the inner chamber that is used for installing inner bag, electrical part. The structure has the defects that a gap exists between the heat-insulating layer and the shell, and water can permeate into the inner cavity through the gap to generate adverse effects on components such as the inner container, internal electric devices and the like; during the maintenance, need open shell and heat preservation simultaneously, just can maintain interior part, it is inconvenient to maintain.

2. The overall foaming type small kitchen appliance has the structural form that: this kind of little kitchen is precious need utilize the foaming frock to form the foaming layer in the inside of casing, and the inside on foaming layer sets up the inner bag, and the electrical apparatus room is formed by solitary working of plastics, and this electrical apparatus room working of plastics is located in the shell. The disadvantages of this structure are: due to the existence of the plastic part of the electric appliance room, the heat preservation effect of the whole small kitchen appliance is poor; the foamed front shell, the foamed rear shell and the foamed electric appliance chamber are easy to deform, so that a maintenance cover on the electric appliance chamber is not well installed, and the product is integrally refined and unstable.

The above information disclosed in this background section is only for enhancement of understanding of the background of the application and therefore it may comprise prior art that does not constitute known to a person of ordinary skill in the art.

Disclosure of Invention

Aiming at the problems pointed out in the background technology, the invention provides the electric water heater, the heat insulation piece and the foaming cavity are arranged between the shell and the inner container, and the heat insulation piece is positioned at the upper part of the foaming cavity, so that the problems of component deformation or displacement and the like caused by foaming can be effectively avoided, the fine stability of a product is improved, and the overall heat insulation performance of the product can be improved.

In order to realize the purpose of the invention, the invention is realized by adopting the following technical scheme:

the invention provides an electric water heater, comprising:

a housing;

the inner container is arranged in the shell;

the heat preservation piece is arranged in the shell, and the upper part of the inner container is embedded into the heat preservation piece;

and a foaming cavity is formed among the shell, the bottom end surface of the heat-insulating piece and the liner below the heat-insulating piece.

In some embodiments of the present application, an installation groove with an open bottom is formed in the heat preservation member, the upper portion of the inner container is located in the installation groove, and the inner surface of the installation groove abuts against the upper portion of the inner container along with the shape.

In some embodiments of the present application, the outer surface of the liner is composed of a top arc surface, a bottom arc surface and a vertical peripheral side surface, the top arc surface is arranged on the top of the vertical peripheral side surface and is tangent to the top arc surface, and the bottom arc surface is arranged on the bottom of the vertical peripheral side surface and is tangent to the bottom arc surface;

the top arc surface is completely positioned in the mounting groove, and the meeting position of the top arc surface and the vertical peripheral side surface is flush with the bottom end surface of the heat preservation piece.

In some embodiments of the present application, the heat retaining member has a circumferential side end surface on a circumferential side surface thereof abutting against an inner surface of the housing.

In some embodiments of the present application, the circumferential side end surface is adjacent to the bottom end surface of the heat retaining member, and a portion of the circumferential side surface of the heat retaining member located above the circumferential side end surface is recessed from the circumferential side end surface.

In some embodiments of the present application, the top of the housing is provided with a service opening, and the service opening is provided with a service cover plate.

In some embodiments of the present application, a water receiving groove is disposed at the maintenance opening on the housing, the water receiving groove surrounds the maintenance opening, and the maintenance cover plate abuts against the outer side wall of the water receiving groove.

In some embodiments of this application, be located on the shell maintenance mouth department is equipped with link and a plurality of first joint portion, be equipped with first screw hole on the link, it is equipped with second joint portion and second screw hole to correspond on the maintenance apron, first screw hole with wear to establish the screw in the second screw hole, first joint portion with second joint portion joint.

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

the top of preceding shell is equipped with first breach, the top of backshell is equipped with the second breach, first breach with the butt joint of second breach forms the maintenance mouth.

In some embodiments of the present application, a recessed portion is formed on the rear housing, and the fourth screw hole is located in the recessed portion.

In some embodiments of the present application, the thermal insulation member is a foam member.

Compared with the prior art, the invention has the advantages and positive effects that:

in the electric water heater disclosed in the application, through the setting of heat preservation piece, the foaming chamber is formed by the shell, the bottom face of heat preservation piece and the clearance between the inner bag that is located the heat preservation piece below, and the foaming is small, and foaming pressure is little, can effectively avoid parts such as foaming material flash, inner bag to receive foaming pressure and produce the offset scheduling problem, improves the stability that becomes more meticulous of product, the location installation of the follow-up product of being convenient for.

The heat preservation piece has the heat preservation performance of itself when forming the foaming chamber, also helps improving the heat preservation performance of electric water heater.

The upper part of the inner container is embedded into the heat-insulating part, so that the heat-insulating part does not occupy more space in the shell, the compact design of parts in the shell is facilitated, and the miniaturization design purpose of a product is facilitated; meanwhile, the heat preservation piece also plays a role in positioning and supporting the inner container, and further avoids the inner container from deviating in the foaming process.

In the embodiment, the design that the heat preservation pieces are arranged on the inner container and the inner container of the shell reverses the conventional design idea of the conventional electric water heater, and improves the fine stability of product processing and forming from the viewpoint of reducing the foaming volume and the foaming pressure; meanwhile, the advantages of heat preservation, compact design and the like are considered.

By utilizing the easy processing property of the heat preservation piece, the heat preservation piece is easy to be designed differently aiming at shells and inner containers with different sizes and shapes, so that the heat preservation piece has stronger applicability and can be applied to electric water heaters of different types.

In actual processing, hardly guarantee between heat preservation piece and the inner bag, absolute seamless installation between heat preservation piece and the shell, even then there is a small amount of foaming material to overflow into, the foaming material will cool off the design after flowing a bit distance along heat preservation piece, and because the location supporting role of heat preservation piece to the inner bag, the positional deviation that can not influence the inner bag is expected in the overflow of these a small amount of foaming materials, on the contrary, can further improve the cooperation steadiness between heat preservation piece and shell, the inner bag after these a small amount of foaming materials cool off the design on the contrary.

Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic side-front view of an electric water heater according to an embodiment;

fig. 2 is a schematic structural view of the electric water heater according to the embodiment, which is viewed from the side;

FIG. 3 is a cross-sectional view of an electric water heater according to an embodiment;

FIG. 4 is a schematic structural diagram of an electric water heater according to an embodiment, with a front shell and a maintenance cover plate omitted;

FIG. 5 is a schematic structural diagram of an electric water heater according to an embodiment without a maintenance cover plate;

FIG. 6 is a structural view of the insulating member according to the embodiment, viewed from the side front;

FIG. 7 is a schematic structural view of the insulating member according to the embodiment, as viewed from the rear side;

FIG. 8 is a schematic view of the heat retaining member according to the embodiment, as viewed from the bottom side;

FIG. 9 is a schematic structural diagram of a rear housing according to an embodiment;

FIG. 10 is a schematic structural diagram of a front housing according to an embodiment;

fig. 11 is a schematic structural view of the service cover plate according to the embodiment, as viewed from the bottom side.

Reference numerals:

100-a heat preservation part, 110-an electric appliance chamber, 111-a first installation position, 112-a second installation position, 113-a third installation position, 114-a fourth installation position, 115-an opening, 120-a circumferential side end surface, 131-a first inner shrinkage surface, 132-a second inner shrinkage surface, 140-an arc surface part, 151-a first diversion trench, 152-a second diversion trench, 153-a third diversion trench, 154-a diversion step, 155-a stopping step and 160-an installation groove;

200-inner container, 210-top arc surface, 220-bottom arc surface and 230-vertical peripheral side surface;

300-outer shell, 310-front shell, 311-third screw hole, 312-third clamping part, 313-first gap, 320-rear shell, 321-fourth screw hole, 322-fourth clamping part, 323-second gap, 324-groove part, 330-maintenance port, 340-water receiving tank, 351-water inlet, 352-water outlet, 360-connecting frame, 361-first screw hole, 370-first clamping part and 380-bottom foot;

400-maintenance cover plate, 410-second clamping part, 420-second screw hole, 431-first opening, 432-second opening;

500-a foaming chamber;

610-heating pipe, 620-water inlet pipe, 630-water outlet pipe, 640-temperature controller, 650-indicator light and 660-knob.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

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

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.

The electric water heater in this embodiment, especially a small kitchen appliance, includes a housing 300, an inner container 200, a heating pipe 610, a water inlet pipe 620, a water outlet pipe 630, a temperature controller 640, and other conventional components, and further includes a heat insulation member 100.

Referring to fig. 1 to 4, the outer case 300 has an approximately rectangular structure as a whole, and an inner cavity of the outer case 300 is used to mount components such as the inner container 200.

The housing 300 in this embodiment is vertically disposed, and the inner container 200 is vertically disposed in the housing 300.

The casing 300 is further provided with a thermal insulation member 100, the thermal insulation member 100 is provided on the upper portion of the inner container 200, and the upper portion of the inner container 200 is embedded in the thermal insulation member 100.

A foaming chamber 500 is formed among the outer case 300, the bottom end surface of the thermal insulation member 100, and the inner container 200 located below the thermal insulation member 100.

In the prior art, the foaming cavity is usually formed by a gap between the shell and the inner container, the foaming volume is large, the foaming pressure is large, the foaming material is easy to overflow in the foaming process, and parts such as the inner container are easy to shift due to the foaming pressure, so that the fine stability of a product after processing and forming is influenced, and the subsequent parts are inconvenient to position and install.

In the application, through the arrangement of the heat preservation part 100, the foaming cavity 500 is formed by the shell 300, the bottom end face of the heat preservation part 100 and the gap between the inner containers 200 below the heat preservation part 100, the foaming volume is small, the foaming pressure is small, the problems that parts such as foaming material flash, the inner containers and the like are subjected to foaming pressure to generate position deviation and the like can be effectively avoided, the fine stability of products is improved, and the positioning and the installation of subsequent products are facilitated.

The heat insulation member 100 has a heat insulation performance while forming the foaming cavity, and is also helpful for improving the heat insulation performance of the electric water heater.

The upper part of the inner container 200 is embedded into the heat insulation piece 100, so that the heat insulation piece 100 does not occupy more space in the shell 300, the compact design of the components in the shell 300 is facilitated, and the miniaturization design purpose of the product is facilitated; meanwhile, the heat preservation member 100 also plays a role in positioning and supporting the inner container 200, and further prevents the inner container 200 from deviating in the foaming process.

In the embodiment, the design that the heat insulation piece 100 is arranged in the shell 300 and on the inner container 200 subverts the conventional design idea of the existing electric water heater, and improves the refinement stability of product processing and forming from the perspective of reducing the foaming volume and the foaming pressure; meanwhile, the advantages of heat preservation, compact design and the like are considered.

By utilizing the easy processability of the heat preservation piece 100, the heat preservation piece 100 is easy to be designed differently aiming at shells and inner containers with different sizes and shapes, so that the heat preservation piece 100 has stronger applicability and can be applied to electric water heaters of different types.

In actual processing, it is difficult to ensure absolute seamless installation between the heat preservation member 100 and the inner container 200 and between the heat preservation member 100 and the outer container 300, so even if a small amount of foaming material overflows, the foaming material flows for a short distance along the heat preservation member 100 and then is cooled and shaped, and due to the positioning and supporting effect of the heat preservation member 100 on the inner container 200, the overflow of the small amount of foaming material cannot influence the position deviation of the inner container 200, and on the contrary, the matching stability between the heat preservation member 100 and the outer container 300 as well as the inner container 200 can be further improved after the small amount of foaming material is cooled and shaped.

In some embodiments of the present application, the thermal insulation member 100 may be a foam member, which has advantages of thermal insulation, easy processing, and the like.

In some embodiments of the present application, referring to fig. 3 and 8, an installation groove 160 with an open bottom is provided in the thermal insulation member 100, the upper portion of the inner container 200 is located in the installation groove 160, and the inner surface of the installation groove 160 and the upper portion of the inner container 200 are closely contacted with each other, so that the thermal insulation member 100 and the inner container 200 can be more reliably attached together, the structural stability is improved, and the foaming material is prevented from overflowing into the gap between the thermal insulation member 100 and the inner container 200.

When the thermal insulation piece 100 is installed, the thermal insulation piece is directly buckled on the top of the inner container 200.

Referring to fig. 3, the liner 200 is a conventional approximately elliptical liner, the outer surface of the 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 disposed on the top of the vertical circumferential side surface 230 and is tangent to the vertical circumferential side surface 230, and the bottom arc surface 220 is disposed on the bottom of the vertical circumferential side surface 230 and is tangent to the vertical circumferential side surface 230.

The top arc surface 210 is completely positioned in the mounting groove 160, and the meeting position of the top arc surface 210 and the vertical peripheral side surface 230 is flush with the bottom end surface of the thermal insulation member 100.

The bottom end surface of the heat preservation piece 100 is not positioned on the top arc surface 210, so that on one hand, the volume of the inner container 200 embedded into the heat preservation piece 100 is increased as much as possible, and the compact design effect is improved; on the other hand, the shape of the top arc surface 210 is adapted, after the heat preservation member 100 is buckled on the top of the inner container 200, whether the installation place of the heat preservation member 100 is correct or not is easy to observe, if the heat preservation member 100 has a deviation, a gap can be generated between the inner surface of the bottom of the installation groove 160 and the inner container 200, the problem can be easily found in the installation process, and therefore, the foaming material in the later period is prevented from overflowing from the gap.

Referring to fig. 3 and 7, the heat insulating member 100 has a circumferential side end surface 120 on a circumferential side surface thereof to abut against an inner surface of the housing 300, so as to ensure abutment between the heat insulating member 100 and the housing 300, and prevent a gap from occurring therebetween, thereby preventing flash.

The circumferential side end face 120 only surrounds an annular side face on the circumferential side surface of the heat insulating member 100, and the whole circumferential side surface of the heat insulating member 100 is not required to be abutted against the inner surface of the shell, so that the anti-overflow effect is ensured, the processing requirement of the matching surface between the heat insulating member 100 and the shell 300 is reduced to a certain extent, and the processing efficiency is improved.

The circumferential side end face 120 is adjacent to the bottom end face of the heat insulating member 100, and the bottom end face of the heat insulating member 100 is the top face of the foaming chamber 500.

The portion of the circumferential side surface of the heat retaining member 100 above the circumferential side end surface is recessed from the circumferential side end surface, and the recessed portion is convenient for giving way to other structures (such as a diversion structure on the heat retaining member, a wiring of an electric device, and the like).

In some embodiments of the present application, the thermal insulation member 100 further functions as an electrical room, and the electrical room 110 is formed inside the thermal insulation member 100 and is used for installing components such as the heating pipe 610, the water inlet pipe 620, the water outlet pipe 630, the temperature controller 640, and the like, so that the functional performance of the thermal insulation member 100 is expanded by fully utilizing the thermal insulation member 100.

In the conventional technology, an electric appliance chamber is usually made of a plastic part, and the plastic part does not have the heat insulation performance, so the heat insulation performance of the electric water heater can be greatly reduced.

The heat preservation part 100 in the embodiment replaces a plastic part of an electric appliance room, and is favorable for improving the heat preservation performance of the electric water heater on the basis of meeting the installation requirement of electric appliances.

For the internal design of the electric appliance room 110, an up-and-down through opening 115 is arranged in the electric appliance room 110, the heating pipe 610 extends out from the opening 115, and a first mounting position 111 for the water inlet pipe 620 to run, a second mounting position 112 for the water outlet pipe 630 to run and a third mounting position 113 for the temperature controller 640 to mount are formed in the electric appliance room 110.

The first installation position 111 and the second installation position 112 are respectively through holes which vertically penetrate through the heat preservation member 100, so that a water inlet pipe 620 led out from the inner container 200 conveniently extends out through the first installation position 111, and a water outlet pipe 630 extends out through the second installation position 112 so as to be connected with an external water pipe.

The first mounting position 111 and the second mounting position 112 are symmetrically arranged at the position behind the heat preservation member 100, and the electric water heater is generally placed close to the wall, so that the water inlet pipe 620 and the water outlet pipe 630 can be close to the wall side as much as possible, and the installation is convenient.

The first mounting position 111 and the second mounting position 112 are both communicated with the opening 115, that is, the through holes where the first mounting position 111 and the second mounting position 112 are located have one sides in an open shape, which is convenient for processing the heat preservation member 100 on one hand, and on the other hand, is also equivalent to enlarging the size of the opening 115, so as to be convenient for mounting other components.

The opening 115 is disposed at the middle position of the electric appliance chamber 110, so that the opening 115 and the lower inner container 200 can be aligned up and down, and the heating pipe 610 can be conveniently installed.

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

The electrical appliance room 110 is further provided with a fourth mounting position 114 for mounting an indicator lamp 650 of the electric water heater, the fourth mounting position 114 is arranged at the front side of the heat preservation member 100, the outer shell 300 is usually provided with a light transmission part for transmitting light emitted by the indicator lamp 650, and the indicator lamp 650 is arranged in front, which means that a user can observe the state of the indicator lamp from the front side of the electric water heater, thereby being convenient for the user to use.

The layout of the layout installation positions in the electrical appliance room 110 also achieves the purposes of convenient installation and convenient use for users on the basis of fully utilizing the existing structure of the heat preservation piece 100.

The specific shape of each location within the appliance compartment 110 depends on the size and shape of each associated component.

In some embodiments of the present application, the heat insulating member 100 further has a flow guiding function to improve the waterproof performance of the electric water heater.

Specifically, referring to fig. 4 to 6, a water inlet hole 351 and a water outlet hole 352 are formed in the housing 300, a flow guide structure is formed on the heat insulating member 100, and water flowing in from the water inlet hole 351 flows out from the water outlet hole 352 through the flow guide structure.

In the embodiment, the electric water heater takes a small kitchen appliance as an example, because the small kitchen appliance is generally installed below a kitchen sink or a 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, because the heat insulation piece 100 is arranged on top, the flow guide structure on the heat insulation piece 100 has a flow guide effect on the permeated water, so that the permeated water is guided to the water outlet hole 352 and then is discharged out of the shell 300, and the adverse effect on the internal structures such as the inner container 200, the foaming layer and the like caused by the continuous downward flowing of the permeated water is effectively avoided, so that the waterproof performance of the electric water heater is improved.

Through the reasonable positions of the water inlet hole 351 and the water outlet hole 352, the adverse effect of water seepage on electric devices in the electric appliance room 110 can be effectively avoided.

In some embodiments, the water inlet hole 351 is disposed at the top of the housing 300 near the front side of the housing 300, and the water outlet hole 352 is disposed at the rear side of the housing 300.

The water flowing in from the water inlet hole 351 flows through the top, the side and the rear of the heat preservation member 100 in sequence under the action of the flow guide structure, and then flows out from the water outlet hole 352.

Through the arrangement of the water inlet hole 351 and the water outlet hole 352, the flow path of water completely avoids the electrical appliance room 110, thereby effectively avoiding the adverse effect of water seepage on the electrical appliances in the electrical appliance room 110.

The rear water outlet hole 352 realizes rear side water drainage, so that the collection and treatment of the drainage are convenient, and the use sanitation of a user is not influenced.

The inlet holes 351 are two, the outlet hole 352 is one, and the two inlet holes 351 are separately provided at both sides of the top of the housing 300. The seepage water flows in from the two water inlet holes 351, then flows to the water outlet hole 352 at the rear side from the two sides of the heat preservation member 100 respectively, is collected and then is discharged together, and the performance of collecting the seepage water and discharging the water is improved.

In some embodiments of the present application, referring to fig. 7, the flow guide structure includes a first flow guide groove 151, a second flow guide groove 152, and a third flow guide groove 153. The first diversion trench 151 is arranged at the top of the heat preservation part 100, the second diversion trench 152 is arranged at the side part of the heat preservation part 100, the third diversion trench 153 is arranged at the rear part of the heat preservation part 100, and the water inlet hole 351 is just opposite to the first diversion trench 151.

The water flowing from the water inlet hole 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 hole 352.

Thus, the water flowing from the water inlet hole 351 does not flow on the outer surface of the thermal insulation member 100 in a large area, 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 flow guiding effect.

The top of the thermal insulation member 100 is provided with an arc surface portion 140, the arc surface portion 140 intersects with the side wall of the thermal insulation member 100, and the first diversion trench 151 is arranged on the arc surface portion 140, so that water falling into the first diversion trench 151 can flow into the second diversion trench 152 on the side surface.

The appearance surface of the housing 300 generally adopts a fillet design at the edge, and the cambered surface 140 also avoids interference with the fillet structure of the housing 300.

Referring to fig. 6 and 7, the heat retaining member 100 has a first inwardly-tapered surface 131 and a portion of the circumferential side end surface 120 on the left and/or right side surface, the first inwardly-tapered surface 131 is located above the circumferential side end surface 120 and inwardly-tapered to the circumferential side end surface 120, and a second guiding groove 152 is formed between the first inwardly-tapered surface 131 and the inner surface of the housing 300.

The rear side surface of the heat retaining member 100 has a second inward-contracting surface 132 and a part of the circumferential side end surface 120, the second inward-contracting surface 132 is located above the circumferential side end surface 120 and is inward-contracted to the circumferential side end surface 120, and a third diversion trench 153 is formed between the second inward-contracting surface 132 and the inner surface of the housing 300.

The inner surface of the housing 300 actually serves as the side wall of the second diversion groove 152 and the third diversion groove 153, so that water retaining and diversion are realized, and the heat preservation piece 100 is processed only by processing an inward shrinkage surface on the circumferential side surface in the actual processing, so that the processing of the heat preservation piece is simplified.

The first inner shrinkage surface 131 is provided with a flow guide step 154, the flow guide step 154 extends obliquely downwards from the front side to the rear side of the heat preservation member 100, and the flow guide step 154 has a flow dividing effect on water flowing down from the first flow guide groove 151, so that the flow guide effect of the side surface of the heat preservation member 100 is improved.

The second guiding grooves 152 and the guiding steps 154 are respectively provided with a stopping step 155 at one end close to the front side of the thermal insulation member 100, so as to prevent seepage water from flowing to the front side of the housing 300, and all seepage water flows to the water outlet hole 352 at the rear side to be discharged.

In some embodiments of this application, the bottom of shell 300 is equipped with a plurality of footing 380, and the height that is located the footing 380 of front side is higher than the height that is located the footing 380 of rear side, and the design that is low behind the high preceding of footing is for cooperating water conservancy diversion structure to further improve water conservancy diversion effect, guarantee that the infiltration is by gathering to the apopore 352 of rear side backward to the preceding.

In some embodiments of the present application, referring to fig. 1 and 5, a maintenance opening 330 is formed at the top of the housing 300, and a maintenance cover 400 is disposed at the maintenance opening 330.

The electric water heater in this embodiment is of a top maintenance type, and the heat insulating member 100 on the top can be seen by opening the maintenance cover plate 400.

Because the electrical apparatus room 110 is arranged in the heat preservation member 100, the electrical apparatus room 110 is over against the maintenance opening 330, and thus, the electrical apparatus in the electrical apparatus room 110 can be maintained by opening the maintenance cover plate 400 without the need of dismantling the housing as in the prior art, so that the maintenance of the electrical apparatus can be performed, and the convenience of maintenance is greatly improved.

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 a pipe outlet does not need to be arranged on the housing 300, as can be seen from the figure, the maintenance cover 400 covers most of the top of the housing 300, and thus, after the maintenance cover 400 is detached, the whole electric appliance room 110 can be completely exposed, and the maintenance of internal devices is facilitated.

A water receiving groove 340 is arranged on the shell 300 at the maintenance opening 330, the water receiving groove 340 surrounds the maintenance opening 330, and the maintenance cover plate 400 is abutted against the outer side wall of the water receiving groove 340.

When the electric water heater is used for a long time, water can permeate from a gap between the maintenance cover plate 400 and the water receiving groove 340, and the water receiving groove 340 receives the permeated water, so that the water is prevented from directly dripping into the electric appliance chamber 110.

When the water in the water receiving tank 340 is full, the water in the water receiving tank 340 can be sucked to the dry by a water absorption towel or a rag.

This embodiment combines together water receiving tank 340 and the water conservancy diversion structure on the heat preservation 100, and in water receiving tank 340 was located to inlet opening 351, the water in water receiving tank 340 was infiltrated by the gap of maintenance apron 400 department, directly flowed into first guiding gutter 151 through inlet opening 351 in, second guiding gutter 152 and third guiding gutter 153 of flowing through in proper order again, then discharged from apopore 352, realized the water route of complete water receiving, water guide, drainage.

Referring to fig. 5, a connection frame 360 and a plurality of first clamping portions 370 are disposed at the maintenance opening 330 of the housing 300, and a first screw hole 361 is disposed on the connection frame 360. Referring to fig. 11, the maintenance cover 400 is correspondingly provided with a second clamping portion 410 and a second screw hole 420. The first screw hole 361 and the second screw hole 420 are provided with screws, and the first clamping portion 370 and the second clamping portion 410 are clamped to realize the fastening connection between the maintenance cover plate 400 and the housing 300.

The maintenance cover plate 400 can be connected with the shell 300 through one screw, the number of screws is small, and the disassembling and assembling processes and time are greatly reduced. And the fastening structure between the maintenance cover 400 and the housing 300 is more reliable by the snap-fit of the first and second snap- fit portions 370 and 410.

In this embodiment, the first clamping portion 370 is a protruding structure facing the maintenance opening 330, and the second clamping portion 340 is a clamping jaw, and the protruding structure is clamped with the groove structure on the clamping jaw.

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

Referring to fig. 10, a plurality of third screw holes 311 are respectively formed at left and right sides and a bottom side of the front case 310, and a third engaging portion 312 is further formed at the bottom side of the front case 310; referring to fig. 9, a plurality of fourth screw holes 321 are respectively formed at the left side, the right side and the bottom side of the rear case 320, and a fourth clamping portion 322 is further formed at the bottom side of the rear case 320; the third screw hole 311 and the fourth screw hole 321 are provided with screws, and the third clamping portion 312 is clamped with the fourth clamping portion 322 to realize the fastening connection between the front shell 310 and the rear shell 320.

In this embodiment, the third clamping portion 312 is a clamping claw structure, the fourth clamping portion 322 is a clamping hole structure, and in 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 by clamping between the third clamping portion 312 and the fourth clamping portion 322, so that the subsequent screws can be conveniently installed.

Referring to fig. 9, the rear case 320 is provided with a groove portion 324, the fourth screw hole 321 is located in the groove portion 324, the screw is driven in from the rear side of the outer case 300, the screw is not visible from the front side surface of the electric water heater, the appearance is more attractive, the groove portion 324 plays a role in shielding and preventing water for the screw, and the situation that the screw is rusted after long-term water spraying and cannot be detached is avoided.

The top of the front shell 310 is provided with a first notch 311, the top of the rear shell 320 is provided with a second notch 323, and after the front shell 310 is connected with the rear shell 320, the first notch 313 and the second notch 323 are just butted to form a maintenance opening 330.

In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. An electric water heater, comprising:

a housing;

the inner container is arranged in the shell;

the heat preservation piece is arranged in the shell, and the upper part of the inner container is embedded into the heat preservation piece;

and a foaming cavity is formed among the shell, the bottom end surface of the heat-insulating piece and the liner below the heat-insulating piece.

2. The electric water heater of claim 1,

an installation groove with an open bottom is arranged in the heat preservation piece, the upper part of the inner container is positioned in the installation groove, and the inner surface of the installation groove is abutted against the upper part of the inner container along with the shape.

3. The electric water heater of claim 2,

the outer surface of the inner container consists of a top arc surface, a bottom arc surface and a vertical peripheral side surface, wherein the top arc surface is arranged at the top of the vertical peripheral side surface and is tangent to the top arc surface, and the bottom arc surface is arranged at the bottom of the vertical peripheral side surface and is tangent to the bottom arc surface;

the top arc surface is completely positioned in the mounting groove, and the meeting position of the top arc surface and the vertical peripheral side surface is flush with the bottom end surface of the heat preservation piece.

4. The electric water heater of claim 1,

the circumferential side end face abutting against the inner surface of the shell is arranged on the circumferential side surface of the heat preservation piece.

5. The electric water heater of claim 4,

the circumferential side end face is close to the bottom end face of the heat preservation piece, and the part, located above the circumferential side end face, of the circumferential side surface of the heat preservation piece is retracted into the circumferential side end face.

6. The electric water heater of claim 1,

the top of shell is equipped with the maintenance mouth, maintenance mouth department is equipped with the maintenance apron.

7. The electric water heater of claim 6,

the shell is provided with a water receiving groove at the position of the maintenance opening, the water receiving groove surrounds the maintenance opening, and the maintenance cover plate is abutted against the outer side wall of the water receiving groove.

8. The electric water heater of claim 6,

lie in on the shell maintenance mouth department is equipped with link and a plurality of first joint portion, be equipped with first screw hole on the link, it is equipped with second joint portion and second screw hole to correspond on the maintenance apron, first screw hole with wear to establish the screw in the second screw hole, first joint portion with second joint portion joint.

9. The electric water heater according to any one of claims 1 to 8,

the shell comprises a front shell and a rear shell, wherein the left side, the right side and the bottom side of the front shell are respectively provided with a plurality of third screw holes, the bottom side of the front shell is also provided with a third clamping part, the left side, the right side and the bottom side of the rear shell are respectively provided with a plurality of fourth screw holes, the bottom side of the rear shell is also provided with a fourth clamping part, screws penetrate through the third screw holes and the fourth screw holes, and the third clamping part is clamped with the fourth clamping part;

the top of preceding shell is equipped with first breach, the top of backshell is equipped with the second breach, first breach with the butt joint of second breach forms the maintenance mouth.

10. The electric water heater according to any one of claims 1 to 8,

the heat preservation piece is a foam piece.

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