Partitioned electrical components installation lining, casing and electric water heater

Abstract

The present invention discloses a partitioned electrical component installation lining plate, a housing and an electric water heater. The partitioned electrical component installation lining plate is provided with an installation opening, and the lining plate is also provided with a first installation groove and a second installation groove, the first installation groove and the second installation groove are arranged at intervals and located outside the installation opening. By installing different electrical components in different areas, the crossing between wiring harnesses is reduced, and potential safety hazards are reduced to improve the reliability of the electric water heater.

Description

Technical Field

[0001] The invention belongs to the technical field of household appliances, and in particular relates to a lining plate, a housing and an electric water heater for installing partitioned electrical components. Background Art

[0002] At present, water heaters are household appliances commonly used in people's daily lives. Water heaters are divided into electric water heaters, electric water heaters, heat pump water heaters and solar water heaters. Electric water heaters are widely used because of their convenience. Among them, electric water heaters can be divided into storage electric water heaters and instant electric water heaters according to the size of heating power. Storage electric water heaters are equipped with a water tank, which has the characteristics of large water output and stable water temperature, and are purchased and used by more families.

[0003] The water heater in conventional technology usually adopts a cylindrical structure, and the electrical components are installed at the end of the shell of the water heater. For example, Chinese Patent No. 201420173265.7 discloses an electric water heater, which includes: a shell, an inner tank, an insulation layer and an electric control box. The inner tank is arranged in the shell and a filling space is provided between the inner tank and the shell. The insulation layer is filled in the filling space. The electric control box is arranged between the inner tank and the shell, and the electric control box is filled with aerogel insulation felt. The electrical components placed in the electric control box generally include a power board, a thermostat, a power supply harness and a control harness. Among them, the power board is connected to the external socket through an external cable to receive the mains power on the one hand, and the power board is also connected to the electric heater connected to the inner tank in the electric water heater through the power supply harness to power the electric heater; at the same time, the thermostat needs to be connected to the temperature sensor arranged on the inner tank through the control harness to achieve temperature control.

[0004] However, due to the large number of electrical components and the complicated wiring harness, the internal wiring harness and electrical components in the electric control box are installed in a disorderly manner, and there is a crossover of strong and weak electricity, which poses a safety hazard. In view of this, how to design a technology to reduce safety hazards and improve reliability is the technical problem to be solved by the present invention. Summary of the invention

[0005] The present invention provides a lining plate, a housing and an electric water heater for installing partitioned electrical components. Different electrical components are installed in partitions, the crossing between wire harnesses is reduced, the potential safety hazards are reduced, and the reliability of the electric water heater is improved.

[0006] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0007] In one aspect, the present invention provides a partitioned lining plate for mounting electrical components, wherein the lining plate is provided with a mounting opening, and further provided with a first mounting groove and a second mounting groove, wherein the first mounting groove and the second mounting groove are arranged at intervals and located outside the mounting opening.

[0008] In one embodiment of the present application, a first wiring groove is provided between the first mounting groove and the mounting opening, and a second wiring groove is provided between the second mounting groove and the mounting opening.

[0009] In an embodiment of the present application, a first line card is disposed in the first wiring trough, and a second line card is disposed in the second wiring trough.

[0010] In one embodiment of the present application, a mounting platform is also provided on the lining plate.

[0011] In one embodiment of the present application, the first mounting groove is located on one side of the mounting platform, and the second mounting groove is located on the other side of the mounting platform.

[0012] In one embodiment of the present application, a third wiring groove is further provided between the first mounting groove and the second mounting groove, and the third wiring groove is arranged on one side of the mounting platform.

[0013] In one embodiment of the present application, the installation port is located above the installation platform, and the third wiring trough is arranged below the installation platform.

[0014] In one embodiment of the present application, a third line card is disposed in the third wiring slot.

[0015] In one aspect, the present invention provides a housing, including a rear shell and a front shell, and also includes the above-mentioned partitioned electrical component installation lining; the lining is arranged on the rear shell, and the front shell is arranged on the lining and covers the lining.

[0016] In one aspect, the present invention provides an electric water heater, comprising an inner tank, an electric heating component, a power supply board and a thermostat, including the above-mentioned outer shell; the inner tank is arranged in the outer shell, the electric heating component is arranged on the inner tank, the power supply board is arranged in a first mounting groove in the outer shell and is connected to the electric heating component through a wiring harness, and the thermostat is arranged in a second mounting groove in the outer shell and is connected to the electric heating component through a wiring harness.

[0017] The electric heating components are placed in the mounting opening on the lining, and the two mounting slots arranged on the lining are used to install the power board and the thermostat respectively. In this way, the power board and the thermostat can be installed independently of each other. Correspondingly, the wiring harnesses connected to the power board and the thermostat are also relatively separated, which effectively reduces the potential safety hazards caused by the crossing of strong and weak electricity due to the interlacing of wiring harnesses, and improves the reliability of the electric water heater. At the same time, in the actual assembly process, it is more conducive to the operator to quickly and efficiently assemble and connect the wiring in different areas, thereby improving the assembly efficiency and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is a structural schematic diagram of an embodiment of a lining plate for installing partitioned electrical components of the present invention;

[0020] Figure 2 A reference diagram of a usage state of an embodiment of a liner for installing partitioned electrical components of the present invention;

[0021] Figure 3 An exploded view of an embodiment of an electric water heater of the present invention;

[0022] Figure 4 A cross-sectional view of an embodiment of an electric water heater of the present invention;

[0023] Figure 5 for Figure 4 A partial enlarged schematic diagram of the middle A area;

[0024] Figure 6 for Figure 4 A partial enlarged schematic diagram of the middle B area;

[0025] Figure 7 It is a structural schematic diagram of the front panel in one embodiment of the electric water heater of the present invention.

[0026] Description of reference numerals:

[0027] Shell 1;

[0028] The rear housing 11, the first screw hole 111, the mounting platform 112, the second positioning groove 113, the step surface 114, and the retaining rib 115;

[0029] The lining plate 12, the first through hole 121, the first clamping portion 122, the second screw hole 123, the first guide slot 124, the second guide slot 125, the positioning rib 126, and the extension edge 127;

[0030] A card slot 1221 and a first positioning slot 1222;

[0031] A first installation slot 1201, a second installation slot 1202, a first wiring slot 1203, a second wiring slot 1204, a mounting platform 1205, and a third wiring slot 1206;

[0032] A first line card 12031, a second line card 12041, and a third line card 12061;

[0033] The front shell 13, the second clamping portion 130, the front panel 132, the housing 131, the second through hole 133, the groove 134, the slot 135, the second inserting tongue 136, and the extending portion 137;

[0034] Clamping claw 1301, first inserting tongue 1302;

[0035] Installation opening 101, annular shielding portion 102;

[0036] Liner 2;

[0037] Flange connection port 201, connection frame 202;

[0038] Electric heating element 3;

[0039] Electronic control device 4;

[0040] Power board 41, thermostat 42,

[0041] Control panel 5;

[0042] Display 6;

[0043] Hanger 100. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the 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 therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In the present invention, unless otherwise clearly stipulated and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0048] The disclosure below provides many different embodiments or examples to realize different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplicity and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0049] An electric water heater uses electricity as its main energy source. The high-temperature heat generated after power is turned on directly heats the water stored in the electric water heater to prepare hot water.

[0050] An electric water heater usually includes a water tank, an electric heating component, an electronic control device and other components, wherein a water storage cavity is formed in the water tank to store the water to be heated, the electric heating component is inserted into the water storage cavity formed by the water tank, and the electronic control device is used to control the on and off operation of the electric heating component so that the water in the water tank is heated to a set temperature.

[0051] For the water tank of an electric water heater, the water tank generally includes an outer shell and an inner tank, and an insulation layer is formed between the outer shell and the inner tank. Among them, the outer shell is generally made of plastic material to meet the design requirements of beautiful and diverse shapes; the inner tank can be made of metal or plastic according to needs.

[0052] In addition, the insulation layer formed between the outer shell and the inner liner, commonly used insulation materials include: asbestos, sponge, foam plastic, polyurethane foam, etc. In conventional technology, in order to obtain a good insulation effect, the insulation layer is usually formed by foaming.

[0053] Among them, for the inner tank using a metal tank body, the interior of the inner tank is prone to corrosion due to the influence of water quality. For this reason, a magnesium rod is also configured on the water tank, and the magnesium rod is inserted into the water storage cavity inside the water tank.

[0054] Since magnesium is the metal with the lowest potential in the electrochemical series and is physiologically non-toxic, it is ideal for making magnesium rods to protect the inner liner. The size of the magnesium rod is directly related to the length of time the inner liner is protected and the size of the protective effect. The larger the magnesium rod, the better the protective effect and the longer the protection time.

[0055] The water tank is also provided with a water inlet pipe and a water outlet pipe. The water inlet pipe is used to transport cold water to the water storage cavity formed in the water tank, while the hot water in the water storage cavity is output from the water outlet pipe.

[0056] For the electric heating component, electric heating methods such as electric heating wire, magnetic energy or silicon tube heating can be used to heat the water stored in the water storage cavity.

[0057] As for the electronic control device, it is used to receive the detection signals sent by relevant sensors (such as water temperature sensors, flow sensors), and at the same time, control the power on and off operation of the electric heating components.

[0058] When the electric water heater is working, the electric control device controls the electric heating component to be powered on for heating. When the water temperature in the water tank reaches the set value, the electric control device controls the electric heating component to be powered off.

[0059] Embodiment 1: Figure 1-Figure 2 As shown, the lining plate 12 for an electric water heater according to an embodiment of the present invention is used to install the electric control device 4 in the electric water heater. It should be noted that the electric control device generally includes components such as a power board 41 and a thermostat 42. The power board 41 and the thermostat 42 need to be connected to the electric heating component 3 configured on the inner tank 2 through a wiring harness. Generally, the electric heating component 3 is configured with a temperature sensor for detecting the water temperature in the inner tank 2.

[0060] In order to install the power board 41 and the thermostat 42 in partitions, the lining plate is used to install the power board 41 and the thermostat 42, wherein the lining plate is provided with an installation opening 101, and the lining plate is also provided with a first installation groove 1201 and a second installation groove 1202, wherein the first installation groove and the second installation groove are arranged at intervals and located on the outside of the installation opening.

[0061] Specifically, during the actual assembly process, the end of the electric heating component installed on the inner tank is exposed in the installation port. For the power board 41 and the thermostat 42, the power board 41 is installed in the first installation slot, and the thermostat 42 is installed in the second installation slot. In this way, the power board 41 and the thermostat 42 are respectively installed in different installation slots to achieve partitioned installation of the power board 41 and the thermostat 42. The power board 41 and the thermostat 42 located in different installation slots are respectively connected to the electric heating component 3 at the installation port 101 through their own wiring harnesses.

[0062] The power board 41 is connected to the electric heating component through a wiring harness to supply power to the electric heating component, so that the electric heating component heats the water in the inner pot 2 after being powered on. At the same time, the thermostat receives the temperature signal sent by the temperature sensor on the electric heating component through the wiring harness, thereby triggering the power board to control the on and off operation of the electric heating component.

[0063] Since the power board 41 and the thermostat 42 are distributed in different installation slots, during the actual installation process, the operator can independently install the power board 41 and the thermostat 42. At the same time, the wiring harnesses of the power board 41 and the thermostat 42 are independently connected, so that the electrical components inside the electric water heater can achieve a separation design of strong and weak electricity, which is more conducive to the neat distribution of the wiring harness, thereby reducing safety accidents caused by leakage due to the mixing of strong and weak electrical harnesses in the later use.

[0064] In some embodiments, in order to facilitate orderly wiring by operators, a wiring groove is designed between the installation slot and the installation port. A first wiring groove 1203 is provided between the first installation slot and the installation port, and a second wiring groove 1204 is provided between the second installation slot and the installation port.

[0065] Specifically, during the assembly process, after the power board 41 and the thermostat 42 are respectively installed in the corresponding installation grooves, the wiring harness between the power board 41 and the electric heating component 3 is arranged in the first wiring groove 1203, and the wiring harness between the thermostat 42 and the electric heating component 3 is arranged in the second wiring groove.

[0066] In order to fix the wiring harness more firmly and reliably, a first wire clip 12031 may be provided in the first wiring trough, and a second wire clip 12041 may be provided in the second wiring trough.

[0067] Specifically, in the process of arranging the wire harness in the wiring trough, the wire harness in the wiring trough is limited by the wire clamp to prevent the wire harness from escaping from the wiring trough. In actual use, the wire clamp in the wiring trough can be directly formed as a wire pressing plate on the side wall of the wiring trough and extending to the other side wall, or the wire clamp is an independent component, fixed in the wiring trough by conventional fixing methods such as screw fixing or clamping, and presses the wire harness.

[0068] In some other embodiments, a mounting platform 1205 is further provided on the liner.

[0069] Specifically, for the electric water heater, it also needs to be configured with components such as a control panel 5 or a display 6 as needed, and the mounting platform 1205 has a flat mounting surface to meet the installation requirements of the control panel 43 or the display 44.

[0070] In order to facilitate the distributed installation of electrical components, the first installation groove is located on one side of the installation platform, and the second installation groove is located on the other side of the installation platform.

[0071] Specifically, since the control panel 5 or the display 6 is usually located in the middle of the electric water heater to facilitate user operation, and the two mounting slots are distributed on both sides of the mounting platform, the areas on both sides of the lining plate can be fully utilized to install the power board 41 and the thermostat 42.

[0072] In another embodiment, the thermostat 42 needs to be connected to the power board 41 for power supply. For this purpose, a third wiring groove 1206 may be provided between the first mounting groove and the second mounting groove, and the third wiring groove is arranged on one side of the mounting platform.

[0073] Specifically, since the first mounting groove and the second mounting groove are distributed on both sides of the mounting platform, a third wiring groove 1206 is configured at the bottom of the mounting platform to meet the wiring connection requirements of the wiring harness between the thermostat 42 and the power board 41.

[0074] Similarly, a third wire clip 12061 is provided in the third wiring groove, and the third wire clip 12061 is used to limit the wiring harness between the thermostat 42 and the power board 41 .

[0075] In a preferred embodiment, in order to reasonably distribute the installation positions of various electrical components, the installation opening is located above the installation platform, and the third wiring trough is arranged below the installation platform.

[0076] Specifically, the third wiring trough is arranged below the installation platform, so that the area where the edge of the lining plate is located can be fully utilized to arrange the wiring harness. In addition, the three wiring troughs are arranged around the periphery of the installation platform, which can be used for more effective independent wiring and make the wiring harness arrangement more neat and regular.

[0077] The electric heating components are placed in the mounting opening on the lining, and the two mounting slots arranged on the lining are used to install the power board and the thermostat respectively. In this way, the power board and the thermostat can be installed independently of each other. Correspondingly, the wiring harnesses connected to the power board and the thermostat are also relatively separated, which effectively reduces the potential safety hazards caused by the crossing of strong and weak electricity due to the interlacing of wiring harnesses, and improves the reliability of the electric water heater. At the same time, in the actual assembly process, it is more conducive to the operator to quickly and efficiently assemble and connect the wiring in different areas, thereby improving the assembly efficiency and quality.

[0078] Based on the above embodiment 1, the liner is installed in the housing of the electric water heater when in use. According to the housing for the electric water heater of the embodiment of the present invention, it should be noted that the housing of the embodiment of the present invention can be installed on a wall extending in a vertical direction or a wall extending in a horizontal direction.

[0079] For the convenience of description, the structure of the shell is described below by taking the shell installed on a vertical wall as an example.

[0080] Embodiment 2: Figure 2-Figure 6 As shown, the present invention also provides an electric water heater, which uses a water tank with a flat design to reduce the effective indoor space occupied by the electric water heater. The water tank includes an outer shell 1, an inner tank 2 and an electric heating component 3 assembled together.

[0081] Among them, since the outer shell 1 and the inner pot 2 are both flat structures, the following structural improvements are made to the outer shell 1, the inner pot 2 and the electric heating component 3 accordingly.

[0082] A mounting opening 101 is provided on the front of the housing 1 , and an annular shielding portion 102 is further provided on the inner wall of the housing 1 . The annular shielding portion 102 is arranged around the mounting opening 101 .

[0083] Inner liner: A flange connection port 201 is provided on the front of the inner liner 2.

[0084] The inner tank 2 is located in the outer shell 1 , the annular shielding portion 102 surrounds the outer side of the flange connection port 201 , an insulation layer (not shown) is arranged between the outer shell 1 and the inner tank 2 , and the electric heating component 3 is arranged on the flange connection port 201 and extends into the interior of the inner tank 2 .

[0085] Specifically, the water tank as a whole adopts a flat design, and its thickness dimension is smaller than the height and length dimensions. In order to meet the installation requirements of the electric heating component 3, and at the same time, also meet the later maintenance requirements of the electric heating component 3, an installation port 101 is arranged at the front of the outer shell 1, and correspondingly, a flange connection port 201 is arranged at the front of the inner tank 2.

[0086] When the electric heating component 3 needs to be assembled, the electric heating component 3 can be inserted from the installation opening 101 and extended into the inner pot 2 through the flange connection opening 201 to complete the assembly. Similarly, when the electric heating component 3 is later repaired and replaced, the electric heating component 3 can be disassembled from the inner pot 2 through the installation opening 101 and easily taken out.

[0087] Meanwhile, for a water tank with a flat structure, the electric heating component 3 is installed at the front of the inner tank 2 to fully utilize the area of ​​the front surface of the inner tank 2 to firmly and reliably install the electric heating component 3 .

[0088] More importantly, during foaming, in order to reduce or avoid the foaming material from overflowing around the flange connection port 201 of the inner liner 2, an annular shielding portion 102 extending toward the flange connection port 201 is formed on the inner wall of the outer shell 1. The annular shielding portion 102 is a cylindrical structure as a whole and surrounds the periphery of the installation port 101. After the inner liner 2 is installed in the outer shell 1, the annular shielding portion 102 will surround the periphery of the flange connection port 201, thereby forming an area between the annular shielding portion 102 and the flange connection port 201 for blocking the leakage of the foaming material.

[0089] A foaming cavity is formed between the outer shell 1 and the inner shell 2. After the foaming material is injected into the foaming cavity, when the foaming material flows to the flange connection port 201, the foaming material can be blocked by the annular shielding portion 102, thereby reducing the leakage of the foaming material from the flange connection port 201.

[0090] In some embodiments, in order to improve the effect of preventing overflow, the edge of the annular shielding portion 102 is pressed against the outer wall of the inner container 2.

[0091] Specifically, after the inner liner 2 is loaded into the outer shell 1 , the edge of the annular shielding portion 102 will be attached to the outer wall of the inner liner 2 , so that during the foaming process, the annular shielding portion 102 can better prevent the foaming material from leaking from the flange connection port 201 .

[0092] In a preferred embodiment, for ease of assembly, a gap is formed between the edge of the annular shielding portion 102 and the outer wall of the liner 2. Further, in order to reduce the leakage of the foaming material from the gap, a first flexible sealing portion (not shown) may be provided outside the annular shielding portion 102, and the first flexible sealing portion shields the gap.

[0093] Specifically, during the assembly process, the first flexible sealing portion is firstly wrapped around the outside of the annular shielding portion 102 and extended to the edge of the annular shielding portion 102. After the liner 2 is installed into the outer shell 1, since the first flexible sealing portion is elastic and can be deformed, the first flexible sealing portion will be tightly pressed against the outer wall of the liner 2, so as to effectively seal the gap formed between the annular shielding portion 102 and the liner 2 through the first flexible sealing portion.

[0094] Similarly, a second flexible sealing portion may be provided outside the flange connection port 201 , and the second flexible sealing portion covers the gap.

[0095] Specifically, during the assembly process, a second flexible sealing portion is firstly wound around the flange connection port 201 on the inner liner 2. After the inner liner 2 is installed into the outer shell 1, since the second flexible sealing portion is elastic and can be deformed, the annular shielding portion 102 is pressed on the second flexible sealing portion, so that the gap formed between the annular shielding portion 102 and the inner liner 2 is effectively sealed by the second flexible sealing portion.

[0096] In actual use, the specific entity of the flexible sealing part may be a rubber cotton or a sealing gasket, etc., which will not be limited or elaborated herein.

[0097] In another embodiment, in order to better block the foaming material flowing toward the flange connection port 201 through the annular shielding portion 102 , the outer diameter of the annular shielding portion 102 gradually decreases along the direction from the installation port 101 to the flange connection port 201 .

[0098] Specifically, the cross-section of the annular shielding portion 102 is a trumpet-mouth structure, and the port size of the annular shielding portion 102 relative to the inner liner 2 is relatively small. The outer wall of the annular shielding portion 102 forms an inclined surface. On the one hand, the smaller port is used to prevent the foaming material from overflowing, and on the other hand, the inclined outer wall is used to ensure that the foaming material can flow along it to evenly distribute the foaming material outside the inner liner 2.

[0099] In some embodiments, in order to effectively locate the position of the inner liner 2 in the outer shell 1 before foaming, so as to avoid the inner liner 2 from shifting in the outer shell 1 during the foaming process, a connecting frame 202 is provided on the back of the inner liner 2, and a threaded hole (not marked) is provided on the connecting frame 202. Correspondingly, a hanging frame 100 is provided on the back of the outer shell 1, and a mounting hole (not marked) is provided on the hanging frame 100; the bolt passes through the mounting hole and extends into the inner thread of the outer shell 1 to be connected to the threaded hole, and the connecting frame 202 abuts against the inner wall of the outer shell 1.

[0100] Specifically, after the inner liner 2 is loaded into the outer shell 1 , the inner liner 2 is fixed to the outer shell 1 via the connecting frame 202 . Meanwhile, the connecting frame 202 is connected to the hanger 100 via bolts and serves to install the hanger 100 .

[0101] In another embodiment, the installation opening 101 is formed on the front of the housing 1. In order to optimize the appearance, the installation opening 101 can be shielded by a front panel 132 configured on the front of the housing 1. During normal use, the front panel 132 is fixed to the front of the housing 1 to shield the installation opening 101, and when the electric heating component 3 needs to be repaired, the front panel 132 is removed.

[0102] By configuring a mounting port at the front of the shell to meet the requirements of installation and subsequent maintenance of the electric heating component, at the same time, an annular shielding portion extending inward is formed around the mounting port inside the shell, and the annular shielding portion surrounds the periphery of the flange connection port of the inner tank. Since the annular shielding portion cooperates with the front surface of the inner tank, the outer periphery of the flange connection port can be better prevented from overflowing. In this way, during the foaming process, after the foaming material flows into between the shell and the inner tank, the foaming material flows to the flange connection port of the inner tank and can be blocked by the annular shielding portion to reduce overflow of the foaming material, thereby improving the foaming quality and improving the product quality.

[0103] Based on the above-mentioned embodiments 1 and 2, the embodiment of the present invention further has the following structural design for the housing 1 .

[0104] Embodiment 3: Figure 2-Figure 7 As shown, the housing 1 in the second embodiment adopts a flat design, and the overall design adopts a curved surface to achieve a good appearance design effect.

[0105] In order to achieve a screw-free design from the front, the following structural design is adopted for the housing 1.

[0106] The housing 1 comprises:

[0107] A rear shell 11, wherein a first screw hole 111 is disposed at an edge of the rear shell 11, and a back of the rear shell 11 forms a mounting surface;

[0108] The lining plate 12 has a first through hole 121 disposed on its edge, a first clamping portion 122 disposed on its outer surface, a mounting opening 101 formed on the lining plate 12, and an annular shielding portion 102 disposed on its inner wall;

[0109] The front shell 13, the inner surface of the front shell 13 is provided with a second clamping portion 130;

[0110] The lining plate 12 is connected to the rear shell 11 , the screw passes through the first through hole 121 and is threadedly connected in the corresponding first screw hole 111 , the front shell 13 covers the lining plate 12 , and the first clamping portion 122 is connected to the corresponding second clamping portion 130 .

[0111] The rear shell 11 and the lining plate 12 in the outer shell 1 are connected by screws, and a mounting cavity is formed between the rear shell 11 and the lining plate 12 to mount the inner liner through the mounting cavity. The rear shell 11 and the lining plate 12 are connected and fixed by screws, so that the two have sufficient structural connection strength to meet the structural strength requirements of the later foaming insulation layer between the outer shell 1 and the inner liner.

[0112] The connection process between the rear shell 11 and the lining plate 12 is as follows: after the rear shell 11 and the lining plate 12 are butted together, the first through hole 121 is aligned with the corresponding first screw hole 111, and then the screw is passed through the first through hole 121 and threaded into the first screw hole 111. In this way, the rear shell 11 and the lining plate 12 are firmly and reliably fastened together by the screw.

[0113] In order to achieve an appearance without exposed screws, the front shell 13 is mounted on the lining plate 12 by means of a clamping method. Specifically, after the rear shell 11 and the lining plate 12 are fixedly connected together, since the first through hole 121 on the lining plate 12 can be seen from the front of the housing 1, in order to prevent the first through hole 121 and the screw from being exposed in the overall appearance, the first through hole 121 is shielded by the front shell 13.

[0114] The connection process between the front shell 13 and the lining plate 12 is specifically as follows: the second clamping portion 130 on the front shell 13 is clamped together with the first clamping portion 122 at the corresponding position on the lining plate 12 to realize the clamping of the front shell 13 on the lining plate 12. At the same time, the first through hole 121 is shielded by the front shell 13, so that the first through hole 121 is not visible from the outside of the housing assembly, achieving an overall appearance effect of no exposed screws. In addition, due to the clamping method, the clamping connection part is shielded by the front shell 13 to optimize the appearance effect.

[0115] In some embodiments, the specific entities of the first clamping portion 122 and the second clamping portion 130 may adopt various structural forms, which are described below by way of example.

[0116] The second clamping portion 130 includes a clamping claw 1301 , and the first clamping portion 122 includes a clamping slot 1221 . The clamping claw 1301 is clamped in the clamping slot 1221 .

[0117] Specifically, when the front shell 13 is connected to the lining plate 12 by snap-fitting, the claw 1301 is inserted into the slot 1221 , and the claw 1301 cooperates with the slot 1221 to connect the front shell 13 to the lining plate 12 .

[0118] In order to improve the connection strength, the second clamping portion 130 further includes a first inserting tongue 1302 , and the first clamping portion 122 further includes a first positioning groove 1222 , and the first inserting tongue 1302 is inserted into the first positioning groove 1222 .

[0119] Specifically, during assembly, the first inserting tongue 1302 will first be inserted into the first positioning groove 1222 to pre-position the front shell 13 and the lining plate 12, and then the claw 1301 will be clamped in the clamping groove 1221 to complete the assembly between the front shell 13 and the lining plate 12.

[0120] The opening directions of the first positioning groove 1222 and the slot 1221 are arranged in opposite directions. In this way, the connection part formed by the latch tongue and the slot 1221 and the connection part formed by the first plug tongue 1302 and the first positioning groove 1222 cooperate with each other, so that the front shell 13 can be more firmly and reliably installed and fixed on the outer wall of the liner 12.

[0121] In another embodiment, since the claw 1301 and the first tongue 1302 are both located on the inner wall of the front shell 13, during assembly, the inner wall of the front shell 13 cooperates with the outer wall of the lining plate 12, making it difficult for the operator to accurately insert the first tongue 1302 into the positioning groove.

[0122] To this end, a first guide slot 124 and a second guide slot 125 may be provided on the outer surface of the lining plate 12 , wherein the first guide slot 124 extends to the clamping slot 1221 , and the second guide slot 125 extends to the positioning slot.

[0123] Specifically, during assembly, the operator may first place the claw 1301 in the first guide slot 124 , and at the same time place the first inserting tongue 1302 in the second guide slot 125 .

[0124] Then, the operator slides the front housing 13 along the first guide slot 124 and the second guide slot 125 , so that the first inserting tongue 1302 is accurately inserted into the first positioning slot 1222 , and finally the claw 1301 is clamped in the clamping slot 1221 .

[0125] Under the guiding action of the first guiding slot 124 and the second guiding slot 125 , the guiding slot can cooperate with the first inserting tongue 1302 and the claw 1301 to guide the front shell 13 to slide.

[0126] Furthermore, in the initial stage of installation, the front shell 13 and the lining plate 12 can be at a greater distance to facilitate the operator to observe the positions of the claw 1301 and the first tongue 1302, thereby ensuring that the claw 1301 and the first tongue 1302 are accurately placed in the corresponding guide slots.

[0127] Then, during the sliding process along the guide slot, the distance between the front shell 13 and the lining plate 12 gradually decreases, and the operator relies on the guiding effect of the guide slot to ensure that the first inserting tongue 1302 is inserted into the first positioning slot 1222 first.

[0128] Finally, the claw 1301 is locked in the slot 1221 so that the front shell 13 and the lining plate 12 are firmly connected together.

[0129] In other embodiments, in order to further improve the connection strength between the front shell 13 and the lining plate 12, the following structural improvements are made to the front shell 13.

[0130] The front housing 13 includes:

[0131] front panel 132;

[0132] A housing 131, on which a second clamping portion 130 is disposed, and on which a second through hole 133 is also disposed;

[0133] The lining plate 12 is further provided with a second screw hole 123 , the screw passes through the second through hole 133 and is threadedly connected in the corresponding second screw hole 123 , and the front panel 132 covers the second through hole 133 and is arranged on the front panel 132 .

[0134] Specifically, the front shell 13 adopts a split design, and the shell 131 as the main body is mounted on the lining plate 12 through the second clamping portion 130 and the first clamping portion 122. At the same time, the shell 131 and the lining plate 12 are further firmly connected together by screws. As for the screws connecting the shell 131 and the lining plate 12, they are shielded by the front panel 132 to meet the appearance design requirement that no screws are exposed on the front of the housing 1.

[0135] 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 .

[0136] Specifically, a groove 134 is provided on the front of the housing 131, and the front panel 132 is placed in the groove 134, so that the front of the housing 1 is flatter. At the same time, for the second through hole 133, the second through hole 133 is located in the groove 134, so that after the front panel 132 is assembled into the groove 134, the second through hole 133 can be covered by the front panel 132.

[0137] In another embodiment, in order to facilitate and securely mount the front panel 132 on the housing 131 , a slot 135 is further provided in the groove 134 , and a second inserting tongue 136 is provided on the front panel 132 , and the inserting tongue is disposed in the corresponding slot 135 .

[0138] Specifically, after the housing 131 is mounted on the liner 12, the front panel 132 is inserted into the corresponding slot 135 through the tongues configured thereon to complete the installation. The tongues and slots 135 cooperate with each other, so that the front of the housing 1 achieves an appearance effect of no exposed screws.

[0139] Among them, in order to further improve the connection reliability of the front panel 132, an extension portion 137 extending toward the lining plate 12 is provided on the front panel 132, and a third screw hole (not shown) is provided on the extension portion 137, and a countersunk hole (not shown) is provided on the shell 131, and the screw passes through the countersunk hole and is threadedly connected in the third screw hole.

[0140] Specifically, in order to meet the requirements of the appearance design, the extension part 137 can be arranged at the upper part or the lower part of the front panel 132 according to the different installation positions of the housing 1. The extension part 137 is formed at the bottom of the front panel 132, and correspondingly, a countersunk hole is provided at the bottom of the housing 131. After the front panel 132 is connected by the insertion tongue and the slot 135, it is further connected and fixed from the bottom by screws.

[0141] Preferably, a removable plug (not shown) can also be provided on the countersunk hole. After the front panel 132 is fixed to the shell 131 by screws, the plug is used to cover the screws in the countersunk hole, further satisfying the design of no exposed screws on the front appearance of the shell 1.

[0142] In some embodiments, in order to facilitate operators to quickly assemble the liner 12 and the rear shell 11 on site, a mounting platform 112 is provided on the inner wall of the rear shell 11 , and the first threaded hole is provided on the mounting platform 112 .

[0143] Specifically, during the assembly process, the mounting platform 112 can support and position the lining plate 12 to facilitate operators to quickly connect and assemble the lining plate 12 and the rear shell 11 together.

[0144] In another embodiment, in order to facilitate the positioning and assembly of the rear shell 11 and the lining plate 12 , a second positioning groove 113 may be provided on the mounting platform 112 , and the edge of the lining plate 12 is stuck in the second positioning groove 113 .

[0145] Specifically, during the process of assembling the rear shell 11 and the lining plate 12 , the rear shell 11 and the lining plate 12 may be pre-assembled together by first inserting the edge of the lining plate 12 into the second positioning groove 113 .

[0146] Then, the relative position between the rear housing 11 and the backing plate 12 is adjusted so that the first through hole 121 is aligned with the first screw hole 111 .

[0147] Finally, the screw is passed through the first through hole 121 and threaded into the first screw hole 111 , so that the rear housing 11 and the liner plate 12 are firmly and reliably assembled together.

[0148] In order to accurately locate the positional relationship between the rear shell 11 and the lining plate 12 to improve assembly accuracy, a step surface 114 may be provided on the inner wall of the rear shell 11 , and a positioning rib 126 may be provided on the outer wall of the lining plate 12 , and the positioning rib 126 abuts against the step surface 114 .

[0149] Specifically, during the process of assembling the rear shell 11 and the lining plate 12, the process of pre-positioning through the positioning groove is referred to so that the rear shell 11 and the lining plate 12 are pre-assembled together. At the same time, after the edge of the lining plate 12 is inserted into the positioning groove, the positioning rib 126 on the lining plate 12 will abut against the step surface 114, thereby accurately positioning the rear shell 11 and the lining plate 12, so as to improve the overall assembly quality of the housing assembly.

[0150] In one embodiment, a retaining rib 115 is further provided on the edge of the rear shell 11 , and the retaining rib 115 is located outside the step surface 114 . An extended edge 127 is provided on the edge of the front shell 13 , and the extended edge 127 surrounds the outside of the retaining rib 115 .

[0151] Specifically, the front shell 13 can cover the entire outer surface of the lining plate 12, and the front shell 13 can block the lining plate 12 as a whole outside the lining plate 12, thereby optimizing the visual effect of the appearance. At the same time, for the retaining ribs 115 formed on the edge of the rear shell 11, on the one hand, during assembly, the retaining ribs 115 can be pre-positioned in cooperation with the extended edge 127 to improve assembly efficiency and accuracy; on the other hand, the retaining ribs 115 are blocked by the extended edge 127 formed on the edge of the front shell 13, which is more conducive to improving the overall appearance effect.

[0152] In a preferred embodiment, for the docking area 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, thereby reducing the size of the connection gap generated in the docking area between the front shell 13 and the rear shell 11.

[0153] In addition, the number of connection points between the rear shell 11 and the lining plate 12, as well as the number of connection points between the front shell 13 and the lining plate 12, are mainly designed in accordance with the overall size of the outer shell assembly.

[0154] For example, a plurality of mounting platforms 112 may be disposed on the edge of the rear shell 11 , and the plurality of mounting platforms 112 are distributed along the edge of the rear shell 11 .

[0155] Correspondingly, the backing plate 12 is provided with first through holes 121 of a number corresponding to the mounting platforms 112 , so that the rear housing 11 and the backing plate 12 can be connected and fixed by a plurality of screws.

[0156] Similarly, there are multiple snap-fit ​​connections between the front shell 13 and the lining plate 12, which are not limited here.

[0157] The front shell and the rear shell are indirectly connected together by using a lining plate, and the lining plate and the rear shell are tightly connected together by screws to meet the overall structural strength requirements of the shell. The front shell is connected to the lining plate by a snap-on method, and the front shell covers the lining plate and then covers the screws, so that the overall effect of the shell achieves an appearance effect without exposed screws, thereby optimizing the overall appearance of the shell to improve user experience.

[0158] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0159] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to replace some of the technical features therein by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions claimed to be protected by the present invention.

Claims

1. An electric water heater, comprising an inner tank, an electric heating component, a power board and a thermostat, characterized in that: It comprises a shell; the shell comprises a rear shell, a front shell and a lining plate; The lining plate is provided with a mounting opening, and the lining plate is also provided with a first mounting groove and a second mounting groove, wherein the first mounting groove and the second mounting groove are arranged at intervals and are located outside the mounting opening; A first wiring groove is provided between the first mounting groove and the mounting opening, and a second wiring groove is provided between the second mounting groove and the mounting opening; The lining plate is also provided with a mounting platform, the first mounting groove is located on one side of the mounting platform, the second mounting groove is located on the other side of the mounting platform, and a third wiring groove is further provided between the first mounting groove and the second mounting groove, and the third wiring groove is arranged on one side of the mounting platform; The lining plate is arranged on the rear shell, the front shell is arranged on the lining plate and covers the lining plate, the inner tank is arranged in the outer shell, the electric heating component is arranged on the inner tank, the power board is arranged in the first mounting groove in the outer shell and connected to the electric heating component through a wiring harness, the thermostat is arranged in the second mounting groove in the outer shell and connected to the electric heating component through a wiring harness; the end of the electric heating component installed on the inner tank is exposed in the mounting port.

2. The electric water heater according to claim 1, characterized in that: A first line card is arranged in the first wiring slot, and a second line card is arranged in the second wiring slot.

3. The electric water heater according to claim 1, characterized in that: The installation opening is located above the installation platform, and the third wiring trough is arranged below the installation platform.

4. The electric water heater according to claim 1, characterized in that: A third line card is arranged in the third wiring slot.

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