CN115013961A - Shell for water heater, water tank and electric water heater - Google Patents

Abstract

The invention discloses a shell for a water heater, a water tank and the water heater. A housing for a water heater comprising: the edge of the rear shell is provided with a first screw hole, and the back of the rear shell forms a mounting surface; the edge of the lining plate is provided with a first through hole, and the outer surface of the lining plate is also provided with a first clamping part; the inner surface of the front shell is provided with a second clamping part; wherein, the welt with the backshell links together and forms the installation cavity, and the screw passes first through-hole and threaded connection correspond in the first screw hole, preceding shell covers the welt, first joint portion with correspond second joint portion links together. The rear shell is connected with the front shell through the arrangement of the lining plate, so that the appearance is exposed without screws, the appearance effect of the shell is optimized, and the user experience is improved.

Description

Shell for water heater, water tank and electric water heater

Technical Field

The invention belongs to the technical field of household appliances, and particularly relates to a shell for a water heater, a water tank and an electric water heater.

Background

At present, water heaters are household appliances commonly used in daily life of people, and the water heaters are divided into electric water heaters, heat pump water heaters, solar water heaters and the like. Electric water heaters are widely used because of their convenient use. The electric water heater can be divided into a water storage type electric water heater and an instant heating type electric water heater according to the heating power, and the water storage type electric water heater has the characteristics of large water yield, stable water temperature and the like due to the arrangement of a water tank, and is purchased and used by more families.

The water heater in the conventional technology usually adopts a cylindrical structure, and the front appearance presents a circular arc surface, so that the screwless design of the appearance is realized. With the continuous progress of the technology, the flat water tank is widely popularized and used by virtue of the characteristic that the occupied space of the flat water tank is smaller. For example, chinese patent No. 201920635175.8 discloses an electric water heater, in which the outer shell and the inner container are both of a flat structure. Like this, when installing at user's family, then can occupy less space in the thickness direction, and then improve the space utilization in the user's family. However, because the housing is of a flat structure, after the housing is assembled, a user can see the exposed screws from the front, so that the appearance effect is poor, and the user experience is reduced.

In view of this, how to design a technology with good appearance effect to improve user experience is a technical problem to be solved by the present invention.

Disclosure of Invention

The invention provides a shell for a water heater, a water tank and an electric water heater, wherein a rear shell and a front shell are connected together by arranging a lining plate, so that the front appearance is not exposed by screws, the appearance effect of the shell is optimized, and the user experience is improved.

In order to achieve the technical purpose, the invention adopts the following technical scheme:

in one aspect, the present invention provides a housing for a water heater, comprising:

the edge of the rear shell is provided with a first screw hole, and the back of the rear shell forms a mounting surface;

the edge of the lining plate is provided with a first through hole, and the outer surface of the lining plate is also provided with a first clamping part;

the inner surface of the front shell is provided with a second clamping part;

wherein, the welt with the backshell links together and forms the installation cavity, and the screw passes first through-hole and threaded connection correspond in the first screw hole, preceding shell covers the welt, first joint portion with correspond second joint portion links together.

In an embodiment of the present application, the front case includes:

a front panel;

the shell is provided with the second clamping part and a second through hole;

the lining plate is further provided with a second screw hole, a screw penetrates through the second through hole and is in threaded connection with the corresponding second screw hole, and the front panel covers the second through hole and is arranged on the front panel.

In an embodiment of the present application, the casing is provided with a groove, the second through hole is located in the groove, and the front panel is disposed in the groove.

In an embodiment of the present application, a slot is further disposed in the groove, and a tongue is disposed on the front panel and disposed in the corresponding slot.

In an embodiment of the present application, be provided with the orientation on the front panel the extension that the welt direction extends, be provided with the third screw hole on the extension, be provided with the counter bore on the casing, the screw passes sink and threaded connection in the third screw hole.

In an embodiment of the application, a plug is further arranged in the counter bore, and the plug covers the screw in the counter bore.

In an embodiment of the present application, the extension is disposed at an upper portion or a lower portion of the front panel.

In an embodiment of the present application, the first clamping portion includes a clamping jaw, the second clamping portion includes a clamping groove, and the clamping jaw is clamped in the clamping groove.

In an embodiment of the present application, the first clamping portion further includes a first insertion tongue, the second clamping portion further includes a first positioning groove, and the first insertion tongue is inserted in the first positioning groove.

In an embodiment of the present application, the positioning groove and the opening direction of the clamping groove are arranged in a back-to-back manner.

In an embodiment of the present application, the outer surface of the second shell is provided with a first guide sliding groove and a second guide sliding groove, the first guide sliding groove extends to the clamping groove, and the second guide sliding groove extends to the positioning groove.

In an embodiment of the application, the inner wall of backshell sets up the mount table, be provided with on the mount table first screw hole.

In an embodiment of the application, be provided with the second constant head tank on the mount table, the edge card of welt is in the constant head tank.

In one embodiment of the application, the inner wall edge of the rear shell is provided with a step surface, the outer wall edge of the second shell is provided with a positioning rib, and the positioning rib is abutted against the step surface.

In an embodiment of the application, the edge of backshell still is provided with the fender muscle, the fender muscle is located the outside of step face, the edge of preceding shell is provided with extends the limit, it surrounds to extend the limit the outside of fender muscle.

In one aspect, the invention provides a water tank, which comprises an inner container and the shell for the water heater, wherein the inner container is positioned in the shell, and a heat-insulating layer is arranged between the inner container and the shell.

In one aspect, the invention provides an electric water heater comprising the water tank described above.

Through adopting the welt with will preceding shell and backshell indirect link together, through the inseparable connection of screw together between welt and the backshell to satisfy the overall structure intensity requirement of shell, and preceding shell passes through the mode and the welt connection of joint, preceding shell will cover the welt and then shelter from the screw, make the whole effect of shell realize no exposed outward appearance of screw, optimized the whole outward appearance of shell, in order to improve user experience nature.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can obtain other drawings based on the drawings without inventive labor.

FIG. 1 is a schematic structural view of a first embodiment of a water tank for an electric water heater according to the present invention;

FIG. 2 is an exploded view of a first embodiment of a water tank for an electric water heater according to the present invention;

FIG. 3 is a sectional view of a first embodiment of a water tank for an electric water heater according to the present invention;

FIG. 4 is an enlarged view of a portion of area A of FIG. 3;

FIG. 5 is an enlarged partial view of the area B in FIG. 3;

FIG. 6 is a schematic view of a front panel of a water tank according to an embodiment of the present invention;

FIG. 7 is a sectional view of a second embodiment of the water tank for an electric water heater according to the present invention.

Description of reference numerals:

a housing 1;

the rear shell 11, a first screw hole 111, an installation platform 112, a second positioning groove 113, a step surface 114 and a blocking rib 115;

the lining plate 12, a first through hole 121, a first clamping portion 122, a second screw hole 123, a first guide sliding groove 124, a second guide sliding groove 125, a positioning rib 126 and an extending edge 127;

a card slot 1221, a first positioning slot 1222;

the front shell 13, the second clamping part 130, the front panel 132, the shell 131, the second through hole 133, the groove 134, the slot 135, the second tongue 136 and the extension part 137;

a jaw 1301, a first insert tongue 1302;

an inner container 2;

a first line segment a, a second line segment b, a third line segment c, a fourth line segment d.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. 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 invention.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; 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 meanings of the above terms in the present invention can be understood according to specific situations 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. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating 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, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present invention. Moreover, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves 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 adopts electric energy as a main energy material, and high-temperature heat generated after electrification directly heats water stored in the electric water heater so as to achieve the purpose of preparing hot water.

The electric water heater generally includes a water tank, an electric heating component, an electric control board and other components, wherein a water storage cavity is formed in the water tank to store water to be heated, the electric heating component is inserted into the water storage cavity formed in the water tank, and the electric control board is used for controlling the electric heating component to be powered on and powered off to operate, so that the water in the water tank is heated to a set temperature.

For a water tank of an electric water heater, the water tank generally comprises an outer shell and an inner container, and an insulating layer is formed between the outer shell and the inner container. Wherein, the shell is generally made of plastic materials to meet the design requirements of beautiful and diversified shapes; the inner container can be a metal container body or a plastic container body according to requirements.

In addition, the heat preservation layer formed between shell and the inner bag, commonly used heat preservation material have: asbestos, sponge, foamed plastic, polyurethane foam, etc., in the conventional technology, in order to obtain a good heat preservation effect, a heat preservation layer is usually formed in a foaming manner.

Wherein, for the inner bag that adopts the metal courage body, because influenced by water quality, the inside of inner bag corrodes easily, for this reason, still dispose the magnesium stick on the water tank, the magnesium stick inserts in the inside water storage cavity of water tank.

Magnesium is physiologically non-toxic because it is the lowest potential metal in the electrochemical series. Therefore, the magnesium rod protective liner is very ideal. The size of the magnesium rod is directly related to the length of the time for protecting the inner container and the size of the protection effect, and the larger the magnesium rod is, the better the protection effect is and the longer the protection time is.

The water tank is also provided with a water inlet pipe and a water outlet pipe, the water inlet pipe is used for conveying cold water to a water storage cavity formed in the water tank, and hot water in the water storage cavity is output from the water outlet pipe.

For the electric heating component, an electric heating mode such as an electric heating wire, magnetic energy or silicon tube heating can be adopted to heat the water stored in the water storage cavity.

The electric control board is used for receiving detection signals sent by related sensors (such as a water temperature sensor and a flow sensor) and controlling the electric heating component to be powered on and powered off.

When the electric water heater works, the electric control board controls the electric heating part to be electrified and heated, and when the water temperature of water in the water tank reaches a set value, the electric control board controls the electric heating part to be powered off.

The shell for the electric water heater is provided according to the embodiment of the invention. It should be noted that the housing according to the embodiment of the present invention may be mounted on a wall extending in a vertical direction, or may be mounted on a wall extending in a horizontal direction.

For convenience of description, the construction of the housing will be described below by taking the case as an example in which the housing is mounted on a vertical wall.

In the first embodiment, as shown in fig. 1 to 6, the housing 1 is designed to be flat, and is designed to be an arc shape as a whole to achieve a good appearance design effect.

In order to achieve a front-view screwless design, the following design is used for the housing 1.

The housing 1 includes:

the rear shell 11, the edge of the rear shell 11 is provided with a first screw hole 111, and the back of the rear shell 11 forms a mounting surface;

the edge of the lining plate 12 is provided with a first through hole 121, and the outer surface of the lining plate 12 is also provided with a first clamping part 122;

a second clamping part 130 is arranged on the inner surface of the front shell 13;

wherein, the lining plate 12 is connected with the rear shell 11, the screw passes through the first through hole 121 and is screwed in the corresponding first screw hole 111, the lining plate 12 is covered by the front shell 13, and the first clamping portion 122 is connected with the corresponding second clamping portion 130.

The rear shell 11 and the lining plate 12 in the shell 1 are connected by screws, and a mounting cavity is formed between the rear shell 11 and the lining plate 12 so as to mount the inner container through the mounting cavity. Connect fixedly through the screw between backshell 11 and the welt 12 for both directly have sufficient structural connection intensity, form the requirement of heat preservation to structural strength with foaming between satisfying the later stage shell 1 and the inner bag.

For the connection process between the rear shell 11 and the liner plate 12, specifically: after the rear case 11 and the liner plate 12 are butted together such that the first through holes 121 are aligned with the corresponding first screw holes 111, screws are then inserted through the first through holes 121 and screwed into the first screw holes 111. Thus, the rear shell 11 and the lining plate 12 are firmly and reliably fastened and connected together through the screws.

In order to achieve the appearance effect without exposed screws, the front shell 13 is mounted on the liner 12 in a clamping manner.

Specifically, after the rear case 11 and the lining plate 12 are fixedly connected together, since the first through hole 121 of the lining plate 12 can be seen from the front surface of the housing 1, in order to prevent the first through hole 121 and the screw from being exposed to the outside in the overall appearance, the first through hole 121 is shielded by the front case 13.

For the connection process between the front shell 13 and the liner plate 12, specifically: the second clamping portion 130 on the front shell 13 is clamped with the first clamping portion 122 at the corresponding position on the lining plate 12, so as to clamp the front shell 13 on the lining plate 12.

Meanwhile, the first through hole 121 is shielded and processed through the front shell 13, so that the first through hole 121 cannot be seen outside the shell assembly, and the overall appearance effect that no screw is exposed is achieved. Moreover, as the clamping mode is adopted, the clamping connection part is shielded by the front shell 13, so as to optimize the appearance effect.

In some embodiments, the concrete entities for the first card portion 122 and the second card portion 130 may take various structural forms, which are illustrated below.

The second catching portion 130 includes a claw 1301, the first catching portion 122 includes a catching groove 1221, and the claw 1301 is caught in the catching groove 1221.

Specifically, when the front shell 13 is clamped and connected with the lining plate 12, the claws 1301 are clamped into the clamping grooves 1221, and the claws 1301 and the clamping grooves 1221 are matched with each other, so that the front shell 13 and the lining plate 12 are connected together.

In order to improve the connection strength, the second clamping portion 130 further includes a first insertion tongue 1302, the first clamping portion 122 further includes a first positioning groove 1222, and the first insertion tongue 1302 is inserted into the first positioning groove 1222.

Specifically, when assembling, the first tongue 1302 is inserted into the first positioning groove 1222 to pre-position the front shell 13 and the lining plate 12, and then the claw 1301 is clamped in the clamping groove 1221 to complete the assembly between the front shell 13 and the lining plate 12.

The opening directions of the first positioning groove 1222 and the card slot 1221 are arranged back to back. In this way, the connection portion formed by the latch and the latch slot 1221 and the connection portion formed by the first insertion tongue 1302 and the first positioning slot 1222 are matched with each other, so that the front shell 13 can be more firmly and reliably fixed on the outer wall of the lining board 12.

In another embodiment, since the latch 1301 and the first tongue 1302 are both located on the inner wall of the front shell 13, when assembling, the inner wall of the front shell 13 and the outer wall of the lining plate 12 are matched with each other, so that it is difficult for an operator to accurately insert the first tongue 1302 into the positioning groove.

For this, a first guide sliding groove 124 and a second guide sliding groove 125 may be provided on an outer surface of the liner 12, the first guide sliding groove 124 extending to the catching groove 1221, and the second guide sliding groove 125 extending to the catching groove.

Specifically, during assembly, the operator may first place the pawl 1301 in the first guide chute 124, and simultaneously place the first insertion tongue 1302 in the second guide chute 125.

Then, the operator slides the front housing 13 along the first and second guide sliding grooves 124 and 125 to accurately insert the first insertion tongue 1302 into the first positioning groove 1222 and finally to clamp the pawl 1301 in the clamping groove 1221.

Under the guiding action of the first guide sliding groove 124 and the second guide sliding groove 125, the guide sliding grooves can cooperate with the first insertion tongue 1302 and the claw 1301 to guide the front shell 13 to slide.

Furthermore, at the initial stage of installation, the distance between the front shell 13 and the lining plate 12 can be relatively long, so that an operator can conveniently observe the positions of the claw 1301 and the first insertion tongue 1302, and further the claw 1301 and the first insertion tongue 1302 are accurately placed in the corresponding guide sliding grooves.

Then, during sliding along the guide sliding groove, the distance between the front shell 13 and the lining plate 12 gradually decreases, and the operator relies on the guiding function of the guide sliding groove to ensure that the first insertion tongue 1302 is inserted into the first positioning groove 1222 first.

Finally, the claws 1301 are caught in the catching grooves 1221 to firmly couple the front case 13 and the liner 12 together.

In other embodiments, in order to further improve the connection strength between the front shell 13 and the liner plate 12, the following structural improvement is made for the front shell 13.

The front case 13 includes:

a front panel 132;

a housing 131, wherein the housing 131 is provided with a second clamping portion 130, and the housing 131 is further provided with a second through hole 133;

the lining plate 12 is further provided with second screw holes 123, screws pass through the second through holes 133 and are screwed into the corresponding second screw holes 123, and the front panel 132 covers the second through holes 133 and is disposed on the front panel 132.

Specifically, for the front shell 13, which adopts a split design, the shell 131 is installed on the lining plate 12 as a main body through the second clamping portion 130 and the first clamping portion 122 in a matching manner. At the same time, the housing 131 and the lining plate 12 are further firmly connected together by screws.

For the screws connecting the housing 131 and the lining plate 12, the front panel 132 shields the screws, so as to meet the design requirement of the front surface of the shell 1 without the exposed screws.

In one embodiment, the housing 131 is provided with a groove 134, the second through hole 133 is located in the groove 134, and the front panel 132 is disposed in the groove 134.

Specifically, by providing the groove 134 on the front surface of the housing 131, the front panel 132 is placed by the groove 134, so that the front surface of the housing 1 is more flat. Meanwhile, as for the second through hole 133, the second through hole 133 is located in the groove 134. Thus, when the front plate 132 is fitted into the groove 134, the second through hole 133 is blocked by the front plate 132.

In another embodiment, in order to achieve convenient and reliable installation of the front panel 132 on the housing 131, the groove 134 is further provided with an insertion slot 135, and the front panel 132 is provided with a second insertion tongue 136, which is arranged in the corresponding insertion slot 135.

Specifically, after the housing 131 is mounted on the liner 12, the front panel 132 is inserted into the corresponding slot 135 through the tongue configured thereon to complete the mounting. The tongue and the slot 135 are mutually matched, so that the front surface of the shell 1 realizes the appearance effect without exposed screws.

In order to further improve the connection reliability of the front panel 132, an extension portion 137 extending toward the liner 12 is provided on the front panel 132, a third screw hole (not shown) is provided on the extension portion 137, and a counter bore (not shown) is provided on the housing 131, through which a screw is screwed.

Specifically, in order to meet the requirement of the design, the extension 137 may be disposed at an upper or lower portion of the front panel 132 according to the installation position of the housing 1. So as to form an extension 137 at the bottom of the front panel 132, correspondingly, a counter bore is provided at the bottom of the housing 131, and after the front panel 132 is matched with the slot 135 through the tongue, the front panel is further connected and fixed from the bottom through a screw.

Preferably, a detachable plug (not shown) may be further disposed on the counter bore, and after the front panel 132 is fixed to the casing 131 by screws, the screw located in the counter bore is covered by the plug, so as to further satisfy the design that no screws are exposed from the front surface of the casing 1.

In some embodiments, in order to facilitate the operator to assemble the lining plate 12 and the rear shell 11 quickly on site, the inner wall of the rear shell 11 is provided with a mounting table 112, and the mounting table 112 is provided with the first threaded hole.

Specifically, during the assembly process, the mounting table 112 can support and position the lining plate 12, so as to facilitate the operator to quickly connect and assemble the lining plate 12 with the rear shell 11.

In another embodiment, in order to facilitate positioning of the assembled rear case 11 and the liner plate 12, a second positioning groove 113 may be provided on the mounting table 112, and an edge of the liner plate 12 is caught in the second positioning groove 113.

Specifically, during the process of assembling the rear shell 11 and the liner plate 12, the rear shell 11 and the liner plate 12 may be pre-assembled by inserting the edge of the liner plate 12 into the second positioning groove 113.

Then, the relative position between the rear case 11 and the liner plate 12 is adjusted so that the first through holes 121 are aligned with the first screw holes 111.

Finally, a screw is passed through the first through hole 121 and screwed into the first screw hole 111, so that the rear case 11 and the backing plate 12 are securely and reliably assembled together.

In order to accurately position the positional relationship between the rear case 11 and the liner 12, the assembly accuracy is improved. A step surface 114 may be provided on the inner wall of the rear case 11, and a positioning rib 126 may be provided on the outer wall of the liner 12, the positioning rib 126 abutting against the step surface 114.

Specifically, in the process of assembling the rear shell 11 and the liner plate 12, reference is made to the above-mentioned process of performing pre-positioning through the positioning groove, so that the rear shell 11 and the liner plate 12 are pre-assembled together. Meanwhile, after the edge of the lining plate 12 is inserted into the positioning groove, the positioning rib 126 on the lining plate 12 abuts against the step surface 114, so that the rear shell 11 and the lining plate 12 are accurately positioned, and the overall assembly quality of the shell assembly is improved.

In one embodiment, the edge of the rear shell 11 is further provided with a rib 115, the rib 115 is located outside the step surface 114, and the edge of the front shell 13 is provided with an extending edge 127, and the extending edge 127 surrounds the rib 115.

Specifically, the front shell 13 can cover the whole outer surface of the lining plate 12, and the front shell 13 can cover the whole lining plate 12 outside the lining plate 12, so that the visual effect of the appearance is optimized. Meanwhile, for the blocking rib 115 formed on the edge of the rear shell 11, on one hand, when the rear shell is assembled, the blocking rib 115 can be matched with the extension edge 127 for pre-positioning, so that the assembling efficiency and the assembling accuracy are improved; on the other hand, the rib 115 is shielded by the extending edge 127 formed on the edge of the front shell 13, which is more beneficial to improving the overall appearance effect.

In a preferred embodiment, for the butt-joint region between the front shell 13 and the rear shell 11, the edge of the front shell 13 is designed to be aligned with the edge of the rear shell 11, so as to reduce the size of the joint gap generated between the front shell 13 and the rear shell 11 at the butt-joint region.

In addition, the number of the connecting portions between the rear case 11 and the backing plate 12 and the number of the connecting portions between the front case 13 and the backing plate 12 are designed to correspond to the overall size of the housing assembly.

For example: a plurality of mounting platforms 112 may be provided at the edge of the rear case 11, and the plurality of mounting platforms 112 are distributed along the edge of the rear case 11.

Correspondingly, the backing plate 12 is provided with a number of first through holes 121 corresponding to the number of the mounting bases 112, so that the rear case 11 and the backing plate 12 are fixedly connected by a plurality of screws.

Similarly, the number of the clamping connection between the front shell 13 and the lining plate 12 is also plural, and is not limited herein.

Through adopting the welt with will preceding shell and backshell indirect link together, through the inseparable connection of screw together between welt and the backshell to satisfy the overall structure intensity requirement of shell, and preceding shell passes through the mode and the welt connection of joint, preceding shell will cover the welt and then shelter from the screw, make the whole effect of shell realize no exposed outward appearance of screw, optimized the whole outward appearance of shell, in order to improve user experience nature.

Based on the first embodiment, the embodiment of the present invention further has the following structural design for the housing 1.

In the second embodiment, as shown in fig. 7, the housing 1 is designed to be flat to reduce the indoor space occupied by the electric water heater, the overall thickness of the housing 1 is reduced, and the height and/or length dimension of the housing 1 is increased, so as to meet the volume requirement of the electric water heater.

Correspondingly, the inner container 2 arranged in the casing 1 adopting the flat design can also adopt the flat design, and further, the inner space of the casing 1 can be fully utilized to obtain the inner container 2 with a large enough volume.

In the preferred embodiment, the ratio of the thickness dimension to the length dimension of the housing 1 ranges from 1: (1.4-2.5); and/or the ratio of the thickness dimension to the height dimension of the housing 1 ranges from 1: (1.4-2.5).

Specifically, for the thickness of the housing 1, the thickness dimension needs to be smaller than the length and height dimensions to meet the requirement of the flat design of the housing 1. Meanwhile, the inside of the casing 1 needs to have enough space for placing the liner 2, and simultaneously meets the volume requirement of the liner 2, and the liner 2 is used as a pressure container to meet the design requirement of the pressure container.

For this reason, the ratio of the thickness to the length and height of the housing 1 needs to be within a reasonable range. Namely, the design requirement of flattening is ensured, and the installation requirement of the inner container 2 can be ensured.

In some embodiments, in order to meet the requirement of flat design and ensure convenient installation and fixation, the thickness dimension of the shell 1 is smaller than the length dimension and the height dimension of the shell 1, and the back of the shell 1 forms an installation surface; the section of the shell 1 perpendicular to the length direction or the height direction is provided with a first line segment a, a second line segment b, a third line segment c and a fourth line segment d which are connected in sequence, the first line segment a and the third line segment c are oppositely arranged, and the second line segment b and the fourth line segment d are oppositely arranged; wherein the first line segment a is arranged on the mounting surface, and the curvature of the first line segment a is smaller than the curvatures of the second line segment b and the fourth line segment d.

Specifically, the housing 1 is designed to be flat, and the thickness dimension of the housing is smaller than the height dimension and the length dimension of the housing, so that the height dimension and the length dimension can be fully utilized to meet the requirement of the water storage volume of the inner container 2 in the electric water heater. Meanwhile, the whole thickness of the shell 1 is thinner, and the distance of the shell 1 protruding out of the wall is smaller, so that the effect of reducing the occupied space of the indoor effective space is achieved.

In addition, the electric water heater is used as a household appliance, and the requirement of appearance beautifying design needs to be met at the same time, so that the cambered surface transition design of the shell 1 is an important measure for optimizing the appearance.

And for the cross-sectional shape of the housing 1 formed perpendicular to the length and height directions, the curvature of the first line segment a arranged at the back of the housing 1 is smaller, so that the housing 1 can be better fitted to the surface of the wall to reduce the thickness dimension of the housing 1.

For the second line segment b and the fourth line segment d connected to the two ends of the first line segment a, since the second line segment b and the fourth line segment d are distributed on the two sides of the housing, it is necessary to achieve a smooth transition between the side surface and the front surface of the housing 1 to achieve a good appearance effect. For this reason, the curvatures of the second and fourth line segments b and d are large.

Preferably, the first line section a is a substantially straight line section to ensure that the mounting surface formed at the back of the housing 1 is a planar structure, thereby enabling the housing 1 to be flatly hung against the surface of a wall.

In the case of the housing 1 standing on the floor, the back mounting surface of the housing 1 is not flat, so that the housing 1 can be closely attached to the wall surface on the corresponding side.

In addition, for the third line segment c located in front of the housing 1, in order to meet the requirement of the outer appearance cambered surface, the curvature of the third line segment c may be increased appropriately, but under the condition of flat design, the curvature of the third line segment c is smaller than that of the second line segment b and the fourth line segment d.

Specifically, the third line segment c may be an arc structure protruding outward, so that the front surface of the housing 1 forms an arc structure. And the curvature of the third line segment c is smaller than the curvatures of the second line segment b and the fourth line segment d, so that the thickness of the shell 1 can be kept in a reasonable range on the premise of meeting the design of the appearance cambered surface of the shell 1, and the design requirement of flattening is met.

And the third line segment c may be larger than the curvature of the first line segment a to ensure that the back of the housing 1 meets the requirement of installation, and meanwhile, the front of the housing 1 meets the requirement of appearance optimization design.

In the actual design and manufacture process of the housing 1, for the second line segment b and the fourth line segment d, the second line segment b or the fourth line segment d may be a continuous and smooth curve structure, and similarly, the second line segment b or the fourth line segment d may be a curve formed by a plurality of line segments with different curvatures, so as to realize smooth transition between the front and the back of the housing 1, so as to meet the curved surface design requirement of the housing 1. The specific curvature of the second line segment b or the fourth line segment d and the manner of forming the second line segment b or the fourth line segment d by using a single line segment or a plurality of line segments are not limited herein.

In some embodiments, since the whole of the housing 1 is designed to be flat, the overall front profile of the housing 1 can be designed arbitrarily according to the design requirements of the product. The front contour line of the housing 1 may be circular, elliptical, square or rectangular. The following examples are given.

In one embodiment, the cross section of the housing 1 perpendicular to the thickness direction is circular or elliptical.

Specifically, the front shape of the housing 1 is a circular or elliptical arc contour, and the like, and the housing 1 with a circular or elliptical cross section can present a smooth appearance design effect to optimize the visual effect of the product.

In another embodiment, the cross section of the housing 1 perpendicular to the thickness direction is square or rectangular.

Specifically, the front surface of the shell 1 is in a square or rectangular polygonal contour shape to obtain an appearance design effect with a specific geometric shape, so that the appearance types of the product are enriched, and the requirements of different people on the appearance of the product are met.

In order to meet the design requirement of the smooth transition of the structure, four corners of the cross section of the housing 1 perpendicular to the thickness direction may be provided with a chamfer structure. Specifically, the square or rectangular cross section formed by the cross section of the housing 1 is chamfered excessively at the four corners, so that the overall appearance effect of the housing 1 is better and more beautiful.

The section profile design of the shell 1 meets the design requirement of flattening the shell 1 on one hand, and also meets the requirement of the product on attractive appearance design on the other hand. Inner bag 2 in the shell 1 can save sufficient water and supply the user to use, and simultaneously, the outward appearance effect that shell 1 demonstrates, more mellow promotes indoor whole outward appearance performance.

Through the thickness dimension design with the shell for being less than height and length dimension, and then make the shell reach the design requirement of flattening to reduce the shared indoor effective space of water heater, and then improve indoor space's utilization ratio, with improvement user experience nature. In addition, the curvature of the first line section of the cross section of the shell on the back is small, so that the shell can be tightly attached to a wall to meet the requirement of improving the space utilization rate, and the curvatures of the second line section b and the fourth line section are large to optimize the overall appearance effect.

In the description of the present specification, reference to the description of "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims (17)

1. A housing for a water heater, comprising:

the edge of the rear shell is provided with a first screw hole, and the back of the rear shell forms a mounting surface;

the edge of the lining plate is provided with a first through hole, and the outer surface of the lining plate is also provided with a first clamping part;

the inner surface of the front shell is provided with a second clamping part;

wherein, the welt with the backshell links together and forms the installation cavity, and the screw passes first through-hole and threaded connection correspond in the first screw hole, preceding shell covers the welt, first joint portion with correspond second joint portion links together.

2. The enclosure of claim 1, wherein the front housing comprises:

a front panel;

the shell is provided with the second clamping part and a second through hole;

the lining plate is further provided with a second screw hole, a screw penetrates through the second through hole and is in threaded connection with the corresponding second screw hole, and the front panel covers the second through hole and is arranged on the front panel.

3. The water heater enclosure of claim 2, wherein the housing is provided with a recess, the second through-hole is located in the recess, and the front panel is disposed in the recess.

4. The water heater shell according to claim 3, wherein the groove is further provided with a slot therein, and the front panel is provided with a tongue which is arranged in the corresponding slot.

5. The water heater shell according to claim 4, wherein the front plate is provided with an extension portion extending toward the lining plate, the extension portion is provided with a third screw hole, the shell is provided with a counter bore, and a screw passes through the counter bore and is screwed into the third screw hole.

6. The water heater enclosure of claim 5, wherein a plug is further disposed in the counterbore, the plug covering a screw in the counterbore.

7. The water heater enclosure according to claim 5, wherein the extension is disposed at an upper portion or a lower portion of the front panel.

8. The water heater enclosure as recited in any one of claims 1 to 7, wherein the first snap-in portion comprises a claw, and the second snap-in portion comprises a catch, the claw being caught in the catch.

9. The water heater enclosure of claim 8, wherein the first clip portion further comprises a first tab, and the second clip portion further comprises a first detent, the first tab being inserted into the first detent.

10. The water heater housing as recited in claim 9, wherein said positioning groove and said catching groove are arranged with their opening directions facing away from each other.

11. The outer shell for the water heater as recited in claim 9, wherein the outer surface of the second housing is provided with a first guide sliding groove and a second guide sliding groove, the first guide sliding groove extends to the catching groove, and the second guide sliding groove extends to the positioning groove.

12. The water heater enclosure according to any one of claims 1 to 7, wherein a mounting platform is provided on an inner wall of the rear housing, the mounting platform having the first threaded hole provided thereon.

13. The enclosure of claim 12, wherein the mounting platform has a second detent in which the edge of the liner is captured.

14. The water heater casing as recited in claim 13, wherein the inner wall edge of the rear shell is provided with a step surface, and the outer wall edge of the second shell is provided with a positioning rib, and the positioning rib abuts against the step surface.

15. The casing for the water heater of claim 14, wherein the edge of the rear casing is further provided with a blocking rib, the blocking rib is located outside the step surface, and the edge of the front casing is provided with an extending edge, and the extending edge surrounds the blocking rib.

16. A water tank comprising an inner container, characterized by further comprising a shell for a water heater as claimed in any one of claims 1-15, wherein the inner container is positioned in the shell, and an insulating layer is arranged between the inner container and the shell.

17. An electric water heater comprising the water tank of claim 16.

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