CN221223013U

CN221223013U - Electric water heating system

Info

Publication number: CN221223013U
Application number: CN202322556848.XU
Authority: CN
Inventors: 赵仁壮; 王府
Original assignee: Wuhu Midea Smart Kitchen Appliance Manufacturing Co Ltd
Current assignee: Wuhu Midea Smart Kitchen Appliance Manufacturing Co Ltd
Priority date: 2023-09-19
Filing date: 2023-09-19
Publication date: 2024-06-25
Anticipated expiration: 2033-09-19

Abstract

The utility model relates to the technical field of electric water heating systems, and provides an electric water heating system. The electric water heating system comprises an inner container, an electricity-proof wall and a cold water pipe, wherein the electricity-proof wall comprises a mounting seat and a cold water joint, the cold water joint is connected to the mounting seat, a cold water channel is formed in the cold water joint, and the cold water channel is communicated with a waterway of the electricity-proof wall; the cold water pipe comprises a first pipe section, a second pipe section and a third pipe section, wherein the first pipe section is connected with the inner container, the second pipe section is connected with the cold water joint, and the third pipe section is suitable for supplying water to the first pipe section and the second pipe section. By arranging the electricity-proof wall on the second pipe section of the cold water pipe, the electricity-proof wall can reduce the attached current of the cold water to a safe range, and the cold water flowing out of the water outlet of the cold water joint is ensured to be safe.

Description

Electric water heating system

Technical Field

The utility model relates to the technical field of electric water heating systems, in particular to an electric water heating system.

Background

An electric water heating system generally consists of a heating element, a waterway system and a control system. The heating element converts electrical energy into thermal energy by means of an electrical current, thereby heating the water. Whereas in the water circuit of the water heater, water is the conductive medium. Therefore, if the circuit inside the water heater fails, current may enter the human body through water flow, causing an electric shock accident. In order to prevent this, the water heater is generally provided with a wall for preventing electricity in the inner container. The electricity-proof wall uses a thinner waterway as a water resistor, and when current is transmitted through an aqueous medium, the flow of the current can be blocked due to the resistance of the water, so that the intensity of the current is reduced. Therefore, in order to ensure the safety of the product, a power-proof wall is generally arranged on the inner container.

However, the water mixture is used in the bath process of the user, and the water mixture is the mixture of the hot water of the inner container and the cold water of the tap water pipe. Under normal conditions, tap water in daily life is not charged with current. Tap water is generally not conductive through purification treatment of a water plant and insulation protection of a conveying pipeline. However, there are water heater electric shock phenomena caused by various reasons in society, so that optimization and updating of technology are still required as to how to reduce electric shock probability.

Disclosure of utility model

The present utility model is directed to solving at least one of the technical problems existing in the related art. Therefore, the utility model provides an electric water heating system, which solves the defect that in the prior art, the risk of electric leakage still exists in the bathing process of a user.

An electric water heating system according to an embodiment of the present utility model includes:

an inner container;

the electricity-proof wall comprises a mounting seat and a cold water joint, wherein the cold water joint is connected to the mounting seat, a cold water channel is formed in the cold water joint, and the cold water channel is communicated with a waterway of the electricity-proof wall;

The cold water pipe comprises a first pipe section, a second pipe section and a third pipe section, wherein the first pipe section is connected with the inner container, the second pipe section is connected with the cold water joint, and the third pipe section is suitable for supplying water to the first pipe section and the second pipe section.

According to the electric water heating system provided by the embodiment of the utility model, the electricity prevention wall is arranged on the second pipe section of the cold water pipe, so that even if the cold water flowing through the second pipe section of the cold water pipe has current, the electricity prevention wall can reduce the current attached to the cold water to a safe range, and the safety of the cold water flowing out of the water outlet of the cold water joint is ensured, and the electric shock of a user is not caused.

According to one embodiment of the present utility model, the electric water heating system includes:

the water mixing valve comprises a hot water inlet and a cold water inlet;

one end of the hot water pipe is communicated with the inner container, and the other end of the hot water pipe is communicated with the hot water inlet;

The electricity-proof wall is arranged at the inlet side of the water mixing valve, and the cold water inlet is communicated with the cold water channel.

According to one embodiment of the utility model, the electricity-proof wall further comprises a hot water joint, the hot water joint is connected to the mounting seat, a hot water channel is formed inside the hot water joint, the hot water channel is located between the hot water pipe and the hot water inlet, and the hot water channel is communicated with the hot water pipe and the hot water inlet.

According to one embodiment of the utility model, the water inlet end of the hot water joint and the water inlet end of the cold water joint are respectively provided with internal threads for respectively connecting with a nut fixing seat,

And/or the number of the groups of groups,

The water outlet end of the hot water connector and the water outlet end of the cold water connector are respectively provided with a mounting groove for respectively fixing the external screw thread pieces.

According to one embodiment of the utility model, the external thread piece comprises an external thread pipe section and a mounting pipe section, wherein the mounting pipe section is inserted into the mounting groove, the external thread pipe section extends out of the mounting groove, and the mounting pipe section is provided with saw-tooth structures distributed along the axial direction of the mounting pipe section.

According to one embodiment of the utility model, the caliber of the water inlet of the hot water joint is larger than the aperture of the through hole of the nut fixing seat corresponding to the caliber of the water inlet of the cold water joint,

And/or the number of the groups of groups,

The caliber of the water outlet of the hot water connector is smaller than the aperture of the through hole of the external screw corresponding to the water outlet of the hot water connector, and the caliber of the water outlet of the cold water connector is smaller than the aperture of the through hole of the external screw corresponding to the cold water connector.

According to one embodiment of the utility model, the electricity-proof wall comprises a housing, wherein the housing is provided with a containing cavity, and the mounting seat is fixed in the containing cavity.

According to one embodiment of the utility model, the mounting seat comprises a first seat body and a second seat body which are mutually buckled, and the electricity-proof wall waterway is formed between the first seat body and the second seat body; the cold water joint comprises a cold water inlet pipe section and a cold water outlet pipe section, wherein the cold water inlet pipe section and the first seat body are formed in a first mode, and the cold water outlet pipe section and the second seat body are formed in an integrated mode.

According to one embodiment of the utility model, the electricity-proof wall is indirectly connected with the liner through the first pipe section and the second pipe section, and the first pipe section and the second pipe section are insulating pipes.

According to one embodiment of the utility model, the electricity-proof wall waterway is one of an annular waterway, a circuitous waterway and a spiral waterway;

And/or the number of the groups of groups,

The length of the effective path of the electricity-proof wall waterway is 20mm-25mm, and the cross-sectional area of the electricity-proof wall waterway is 60mm ²-80mm².

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the related art, the drawings that are required to be used in the embodiments or the related technical descriptions will be briefly described, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.

FIG. 1 is a schematic diagram of an electric water heating system according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a structure of a wall according to an embodiment of the present utility model;

FIG. 3 is a schematic view of an exploded construction of the anti-electricity wall of FIG. 2;

FIG. 4 is a schematic top view of the wall of FIG. 2 with the first housing removed;

Fig. 5 is a schematic cross-sectional view of the electricity protection wall of fig. 2.

Reference numerals:

10. An electricity-proof wall;

20. An inner container;

30. a water mixing valve;

40. A hot water pipe;

50. A cold water pipe; 51. a first pipe section; 52. a second pipe section; 53. a third pipe section;

100. A mounting base; 101. waterproof wall waterway; 102. a chute; 103. a guide groove; 110. a first base; 111. a first avoidance hole; 112. a vent hole; 120. a second seat body; 121. a second avoidance hole;

200. A hot water joint; 201. a hot water channel; 210. limiting pipe sections; 211. a guide protrusion; 220. a hot water inlet pipe section; 230. a hot water outlet pipe section; 240. a mounting groove;

300. A cold water joint; 301. a cold water channel; 310. a cold water inlet pipe section; 320. a cold water outlet pipe section;

400. a nut fixing seat;

500. An external screw member;

600. a housing; 601. a receiving chamber;

710. A first gasket; 720. a second gasket;

800. A screw;

900. And (3) a nut.

Detailed Description

Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the utility model but are not intended to limit the scope of the utility model.

In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In describing embodiments of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in embodiments of the present utility model will be understood in detail by those of ordinary skill in the art.

In embodiments of the utility model, unless expressly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., 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 embodiments of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed 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. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

The inventors found that one cause of electric shock to a user when using the water heater is associated with electrification and leakage of a cold water pipeline. In special cases, the cold water may carry current, for example, if there is a fault in the booster pump or ground line in the home, resulting in the cold water contacting the charged metal surface, the cold water may also carry current. Thus, the risk of leakage is still present during the bath of the user. Aiming at the possible electric leakage problem of the cold water end, the utility model provides a novel electric shock prevention system by combining cold water and hot water flow paths of a water heater, a water mixing valve and the like.

Referring to fig. 1 to 3, an electric water heating system according to an embodiment of the present utility model includes an inner container 20, an electricity-proof wall 10 and a cold water pipe 50, wherein the electricity-proof wall 10 includes a mounting base 100 and a cold water joint 300, the cold water joint 300 is connected to the mounting base 100, a cold water channel 301 is formed inside the cold water joint 300, and the cold water channel 301 is communicated with a waterway of the electricity-proof wall 10; the cold water pipe 50 includes a first pipe section 51, a second pipe section 52, and a third pipe section 53, the first pipe section 51 being connected to the liner 20, the second pipe section 52 being connected to the cold water joint 300, the third pipe section 53 being adapted to supply water to the first pipe section 51 and the second pipe section 52.

According to the electric water heating system of the embodiment of the present utility model, by arranging the electricity preventing wall 10 on the second pipe section 52 of the cold water pipe 50, even if the cold water flowing through the second pipe section 52 of the cold water pipe 50 has current, the electricity preventing wall 10 can reduce the current attached to the cold water to a safe range, and ensure that the cold water flowing out of the water outlet of the cold water connector 300 is safe and does not cause electric shock to the user.

According to one embodiment of the present utility model, the electric water heating system further comprises a water mixing valve 30 and a hot water pipe 40, wherein the water mixing valve 30 comprises a hot water inlet and a cold water inlet (not shown in the drawing), one end of the hot water pipe 40 is communicated with the inner container, the other end is communicated with the hot water inlet, the electric wall 10 is installed on the inlet side of the water mixing valve 30, and the cold water inlet is communicated with the cold water channel 301. Through setting up the position at the water inlet of mixing valve 30 with the electricity prevention wall 10, guarantee that the user contacts mixing valve 30 and can not electrocute, improve the safety in utilization.

In one embodiment, the hot water channel 201 is independent of the electric wall waterway 101, and the hot water channel 201 is independent of the electric wall waterway 101, so that the hot water connector 200 can be conveniently arranged as a separate component and installed on the installation seat 100. For example, the hot water joint 200 is movably connected to the mounting base 100. And further, the distance between the hot water joint 200 and the cold water joint 300 is adjusted by moving the hot water joint 200. The connection mode of the hot water joint 200 and the mounting base 100 is not limited, as long as the purpose of adjusting the distance between the hot water joint 200 and the cold water joint 300 can be achieved. For example, the installation seat 100 may be provided with a sliding groove 102, and the hot water joint 200 slides along the sliding groove 102; alternatively, a universal joint may be provided in the mount 100, and the hot water joint 200 may be rotatably connected to the mount 100 via the universal joint. Of course, the mounting seat 100 of the electricity-proof wall 10 may be provided with a hot water electricity-proof wall waterway (not shown in the drawings), and the hot water connector 200 may be movably connected to the mounting seat 100 at this time in the case of the hot water channel 201 and the hot water electricity-proof wall waterway, so long as the tightness between the hot water channel 201 and the hot water electricity-proof wall waterway is ensured. Similarly, the cold water joint 300 may be movably connected to the mounting seat 100 on the premise of ensuring the tightness between the cold water channel 301 and the electricity-proof wall waterway 101, and the form of the movable connection is not limited.

Referring to fig. 3, according to an embodiment of the present utility model, a wall 10 includes a mounting base 100, a hot water joint 200 and a cold water joint 300, wherein the mounting base 100 is provided with a wall waterway 101; the hot water joint 200 is connected to the mounting seat 100, a hot water channel 201 is formed in the hot water joint 200, and the hot water channel 201 is independent of the electricity-proof wall waterway 101; the cold water joint 300 is connected to the mounting seat 100, a cold water channel 301 is formed inside the cold water joint 300, the cold water channel 301 is communicated with the electricity-proof wall waterway 101, and cold water is suitable for sequentially passing through a water inlet of the cold water joint 300, the electricity-proof wall waterway 101 and a water outlet of the cold water joint 300.

According to the electricity preventing wall 10 of the embodiment of the utility model, the electricity preventing wall waterway 101 is arranged on the mounting seat 100, and the cold water channel 301 of the cold water joint 300 is communicated with the electricity preventing wall waterway 101, so that the cold water can be ensured to pass through the electricity preventing wall 10, the intensity of current can be reduced, and no influence on a user is ensured.

It can be appreciated that, in the electricity-proof wall 10 according to the embodiment of the present utility model, cold water enters the electricity-proof wall waterway 101 from the water inlet of the cold water connector 300, even if the cold water is accompanied by current, the electricity-proof wall waterway 101 can reduce the current accompanied by the cold water to a safe range, so as to ensure that the cold water flowing out from the water outlet of the cold water connector 300 is safe.

It should be noted that the installation position of the electricity preventing wall 10 is not particularly limited in the present utility model, and the electricity preventing wall 10 may be installed in any scene requiring water. For example, the electricity preventing wall 10 may be provided at the interface position of the water mixing valve 30; the electricity-proof wall 10 can also be arranged at the water outlet position of the faucet; the electricity-proof wall 10 can also be arranged at the water inlet position of the water-using electric appliance.

It can be appreciated that the electricity-proof wall 10 is provided with the cold water connector 300 and the hot water connector 200, so that different use demands of users can be met, the cold water connector 300 can be used for cooling, cleaning and other scenes requiring cold water, and the hot water connector 200 can be used for bathing, dish washing, clothes washing and other scenes requiring warm water or hot water.

It is understood that the electricity-proof wall waterway 101 may be integrally formed to the mounting base 100. Or may be a separate pipe that is mounted to the mounting block 100. The waterproof wall waterway 101 is integrally formed in the mounting seat 100, so that the complicated steps of mounting are avoided, the time is saved, and the risk of cold water leakage is reduced. The independent pipeline is arranged on the mounting seat 100, so that a user can conveniently replace the waterproof wall waterway 101 with different shapes, and the waterproof wall waterway is convenient to maintain.

It is understood that the hot water channel 201 may be configured as a straight-through channel to facilitate smooth circulation of hot water. The through-channel is the hot water channel 201 that enters directly from one joint and then exits directly through the other joint. Of course, other forms are possible, for example, the hot water channel 201 may be a branched channel, the hot water channel 201 entering from one junction and then branching into two channels within the junction, exiting through two different outlet junctions, respectively. There is no particular limitation herein.

In one embodiment, the electricity preventing wall 10 further includes a hot water electricity preventing wall waterway (not shown), the hot water channel 201 is communicated with the hot water electricity preventing wall waterway, and the hot water passes through the water inlet of the hot water connector 200, the hot water electricity preventing wall waterway, and the water outlet of the hot water connector in sequence. It can be understood that by arranging the hot water electricity-proof wall waterway, the current attached to the hot water can be reduced to a safe range, and the hot water leaving from the water outlet of the hot water interface is ensured to be safe.

According to an embodiment of the present utility model, the electricity-proof wall waterway 101 is one of an annular waterway, a circuitous waterway, and a spiral waterway. It can be appreciated that the current-proof wall waterway 101 increases the current dispersion and resistance by increasing the path length of the current, thereby reducing the intensity of the current. The electricity-proof wall waterway 101 is an annular waterway, and can be specifically referred to fig. 4, the annular waterway is an annular structure, and the electricity-proof wall waterway 101 has a simple structure and is convenient to manufacture. The circuitous waterway increases the path length of the current through the plurality of curved waterways, impeding the flow of the current. The spiral waterway is arranged in a spiral manner, so that the length of the waterway is increased.

It will be appreciated that the anti-electricity wall waterway 101 may be located on the same plane or on different planes, thereby increasing the space complexity and making the path length of the anti-electricity wall waterway 101 longer.

According to one embodiment of the utility model, the effective path length of the electricity-proof wall waterway 101 is 20mm-25mm, and the cross-sectional area of the electricity-proof wall waterway 101 is 60mm ²-80mm². It should be noted that, the effective path of the electricity-proof wall waterway 101 is the length of the waterway section with the cross-sectional area of 60mm ²-80mm² in the pipeline through which the cold water passes.

In one embodiment, the effective path length of the anti-electricity wall waterway 101 is 22.5mm and the cross-sectional area of the anti-electricity wall waterway 101 is 64mm ².

Referring to fig. 3 to 5, according to an embodiment of the present utility model, the mounting base 100 is provided with a sliding groove 102, and the hot water joint 200 is slidably connected to the sliding groove 102 so that the hot water joint 200 is close to or far from the cold water joint 300. It will be appreciated that the distance between the hot water connector 200 and the cold water connector 300 can be varied by the chute 102, providing more flexible and convenient installation, and further being adaptable to devices of different installation sizes, achieving better adaptation.

According to one embodiment of the present utility model, the distance between the hot water junction 200 and the cold water junction 300 is L, which has a value ranging from 140mm to 150mm. It will be appreciated that when the electricity preventing wall 10 is installed at the position of the water inlet of the water mixing valve 30, the interval between the cold water interface and the hot water interface of the water mixing valve 30 is 145mm-150mm, and the interval between the hot water interface 200 and the cold water interface is 140mm-150mm through the adjustment of the chute 102, the water mixing valve 30 of the interval between the different cold water interfaces and the hot water interface can be adapted, thereby reducing the burden of the user's installation work.

Referring to fig. 3 to 4, the mounting base 100 includes a first base 110 and a second base 120 that are fastened to each other, and a waterproof wall waterway 101 is formed between the first base 110 and the second base 120.

A chute 102 is formed between the first and second seats 110 and 120; the hot water joint 200 comprises a limiting pipe section 210, a hot water inlet pipe section 220 and a hot water outlet pipe section 230, wherein the hot water inlet pipe section 220 is arranged on a first side of the limiting pipe section 210, the hot water outlet pipe section 230 is arranged on a second side of the limiting pipe section 210, the first side is opposite to the second side, a first avoidance hole 111 is formed in the first base 110, a second avoidance hole 121 is formed in the second base 120, the limiting pipe section 210 is arranged in the sliding groove 102, the hot water inlet pipe section 220 extends out of the first base 110 through the first avoidance hole 111, and the hot water outlet pipe section 230 extends out of the second base 120 through the second avoidance hole 121. Of course, the mounting base 100 does not necessarily have to adopt a structure in which two base bodies (the first base body 110 and the second base body 120) are fastened, and the sliding groove 102 does not necessarily have to be formed between the two base bodies.

It can be appreciated that the electric wall waterway 101 is suitable for being formed between the first base 110 and the second base 120, wherein the electric wall waterway 101 may be formed by partially forming the first base 110 and partially forming the second base 120, and the first base 110 and the second base 120 are buckled to form a complete electric wall waterway 101. Of course, the electricity-proof wall waterway 101 may also be a separate pipeline structure, and is installed between the first seat 110 and the second seat 120.

It can be understood that the sliding groove 102 is located between the first seat 110 and the second seat 120, and the first seat 110 and the second seat 120 have a limiting effect on the hot water connector 200, so that the hot water connector 200 slides along the extending direction of the sliding groove 102, and at this time, the hot water connector 200 corresponds to a sliding block capable of moving in the sliding groove 102, and cannot be separated from the sliding groove 102.

In one embodiment, referring to fig. 3, the limiting pipe section 210 is installed in the chute 102, one of the limiting pipe section 210 and the chute 102 is provided with a guiding protrusion 211, and the other is provided with a guiding groove 103 matching with the guiding protrusion 211, and the guiding protrusion 211 and the guiding groove 103 are used for guiding the movement of the limiting pipe section 210.

It can be appreciated that the first avoidance hole 111 and the second avoidance hole 121 are long holes, and the extending direction of the long holes is the same as that of the chute 102, so that the movement of the hot water connector 200 is not affected.

In one embodiment, referring to fig. 3, the first base 110 is provided with a vent 112. It will be appreciated that the vent 112 may provide ventilation between the interior of the mounting block 100 and the external environment, preventing excessive build-up of gas within the mounting block 100, resulting in excessive pressure or localized sudden pressure changes, thereby affecting the stability and safety of the wall 10.

It will be appreciated that the mounting block 100 includes a first block 110 and a second block 120 that are snap-fit to each other, wherein the snap-fit to each other may be coupled by one or more of a snap-fit connection, a magnetic attachment connection, a screw threaded connection.

In one embodiment, at least one of the first and second housings 110 and 120 is provided with a snap protrusion (not shown) and the other is provided with a snap recess (not shown), and when the second housing 120 is inserted into or slidably connected to the first housing 110, the snap protrusion and the snap recess are engaged with each other to form a stable connection, thereby providing a stable installation effect.

In one embodiment, at least one of the first and second housings 110 and 120 is provided with a screw mount, and the other is provided with a threaded hole (not shown) to which a screw 800 is coupled to form a secure connection.

According to one embodiment of the present utility model, the cold water joint 300 includes a cold water inlet pipe section 310 and a cold water outlet pipe section 320, the cold water inlet pipe section 310 and the first housing 110 are first molded, and the cold water outlet pipe section 320 and the second housing 120 are integrally molded. It will be appreciated that the integrally formed structure provides good sealing and strength, thereby ensuring that cold water does not leak in the process of sequentially passing through the water inlet of the cold water connector 300, the electricity-proof wall waterway 101 and the water outlet of the cold water connector 300.

According to one embodiment of the present utility model, the electricity preventing wall 10 is indirectly connected to the liner 20 through a first pipe section 51 and a second pipe section 52, and the first pipe section 51 and the second pipe section 52 are insulating pipes. It can be appreciated that the insulating tube can effectively prevent current leakage, and the electricity-proof wall 10 and the liner 20 are connected through the insulating tube, so that the electricity-proof wall 10 is not directly electrified due to the leakage of the liner, and water flowing through the first tube section 51 and the second tube section 52 can enter the cold water joint 200 of the electricity-proof wall 10 and pass through the water channel 101 of the electricity-proof wall, thereby ensuring the use safety of users.

According to an embodiment of the present utility model, referring to fig. 3 and 5, both the water inlet end of the hot water joint 200 and the water inlet end of the cold water joint 300 are provided with internal threads for connecting the nut fixing base 400; the water outlet end of the hot water joint 200 and the water outlet end of the cold water joint 300 are provided with mounting grooves 240, and the mounting grooves 240 are used for fixing the male screw 500. It will be appreciated that the nut retainer 400 may be used to attach different types of nuts 900 to facilitate installation of different sized water pipes.

It will be appreciated that the mounting groove 240 is used to fix the external screw member 500, the external screw member 500 is a separate component, external screw processing is facilitated, the external screw member 500 is mounted to the hot water joint 200 and the cold water joint 300 through the mounting groove 240, and the portions of the external screw member 500 protruding from the mounting groove 240 are provided with external screw threads, thereby reducing the mounting gap of the electricity preventing wall 10 and other components (e.g., the water pipe or the water mixing valve 30).

According to an embodiment of the present utility model, the through hole of the nut fixing base 400 is smaller than the hole diameters of the water inlet of the hot water tap 200 and the water inlet of the cold water tap 300; the through hole of the male screw 500 is larger than the hole diameters of the water outlet of the hot water tap 200 and the water outlet of the cold water tap 300. It will be appreciated that the through hole of the nut holder 400 is smaller than the aperture of the water inlet of the joint (including the hot water joint 200 and the cold water joint 300), and water is introduced into the joint having a large aperture from the through hole of the nut holder 400, thereby preventing water from leaking out from the installation gap between the joint and the nut holder 400. The inner diameter of the male screw 500 is larger than the aperture of the water outlet of the joint, and water can enter the through hole of the male screw 500 with large aperture from the water outlet of the joint with small aperture.

In one embodiment, a first spacer 710 is disposed between the nut 900 and the nut holder 400, and a second spacer 720 is disposed between the nut holder 400 and the cold water fitting 300 and between the nut holder 400 and the hot water fitting 200. It will be appreciated that there may be a slight gap or uneven surface between the nut 900 and the nut retainer 400, and that the first spacer 710 may fill the gap to ensure a tight engagement. The second spacer 720 may provide a fastening function between the nut holder 400 and the cold water joint 300, or may provide a fastening function between the nut holder 400 and the hot water joint 200, facilitating installation.

In one embodiment, and in connection with FIG. 5, an externally threaded member 500 includes a connected externally threaded tube segment and a mounting tube segment (the externally threaded tube segment and the mounting tube segment are not separately identified in the drawings), the mounting tube segment being connected to the mounting groove 240, the externally threaded tube segment extending from the mounting groove 240, the mounting tube segment being provided with a serrated structure along an axial direction thereof. It will be appreciated that the serrations may create a greater friction in the mounting groove 240, making the male screw 500 more difficult to loosen, enhancing tightness.

Referring to fig. 3, according to an embodiment of the present utility model, the electricity preventing wall 10 further includes a housing 600, and the housing 600 is formed with a receiving cavity 601; the mount 100 is fixed to the accommodating chamber 601. It will be appreciated that the accommodating chamber 601 is used to mount and fix the mounting base 100, and can prevent foreign substances, dust, moisture, humidity, etc. from entering the accommodating chamber 601, thereby protecting the internal objects from damage or corrosion, and ensuring the normal working environment of the internal objects. The housing 600 is made of a hard and durable material and has certain resistance to compression, impact and corrosion, and for example, the housing 600 may be a stainless steel housing 600.

Finally, it should be noted that the above-mentioned embodiments are merely illustrative of the utility model, and not limiting. While the utility model has been described in detail with reference to the embodiments, those skilled in the art will appreciate that various combinations, modifications, or equivalent substitutions can be made to the technical solutions of the present utility model without departing from the spirit and scope of the technical solutions of the present utility model, and it is intended to be covered by the scope of the claims of the present utility model.

Claims

1. An electric water heating system, comprising:

An inner container (20);

The electricity-proof wall (10) comprises a mounting seat (100) and a cold water joint (300); the mounting seat (100) is provided with an electricity-proof wall waterway (101), the cold water joint (300) is connected to the mounting seat (100), a cold water channel (301) is formed in the cold water joint (300), and the cold water channel (301) is communicated with the electricity-proof wall waterway (101);

cold water pipe (50), including first pipeline section (51), second pipeline section (52) and third pipeline section (53), first pipeline section (51) connect inner bag (20), second pipeline section (52) connect cold water joint (300), third pipeline section (53) are suitable for to first pipeline section (51) and second pipeline section (52) water supply.

2. The electric water heating system according to claim 1, wherein the electric water heating system comprises:

A mixing valve (30), the mixing valve (30) comprising a hot water inlet and a cold water inlet;

a hot water pipe (40), wherein one end of the hot water pipe (40) is communicated with the inner container, and the other end of the hot water pipe is communicated with the hot water inlet;

the electricity-proof wall (10) is arranged at the inlet side of the water mixing valve (30), and the cold water inlet is communicated with the cold water channel (301).

3. The electric water heating system according to claim 2, wherein the electricity proof wall (10) further comprises a hot water joint (200), the hot water joint (200) is connected to the mounting base (100), a hot water channel (201) is formed inside the hot water joint (200), the hot water channel (201) is located between the hot water pipe (40) and the hot water inlet, and the hot water channel (201) is communicated with the hot water pipe (40) and the hot water inlet.

4. An electric water heating system according to claim 3, wherein the water inlet end of the hot water joint (200) and the water inlet end of the cold water joint (300) are provided with internal threads for respectively connecting with nut holders (400),

And/or the number of the groups of groups,

The water outlet end of the hot water joint (200) and the water outlet end of the cold water joint (300) are respectively provided with a mounting groove (240) for respectively fixing the external screw thread pieces (500).

5. An electric water heating system according to claim 4, characterized in that the external screw member (500) comprises an external screw tube section and a mounting tube section, the mounting tube section is inserted into the mounting groove (240), the external screw tube section extends out of the mounting groove (240), and the mounting tube section is provided with a saw-tooth structure distributed along the axial direction of the mounting tube section.

6. The electric water heating system according to claim 4, wherein the water inlet aperture of the hot water joint (200) is larger than the through hole aperture of the nut holder (400) corresponding thereto, the water inlet aperture of the cold water joint (300) is larger than the through hole aperture of the nut holder (400) corresponding thereto,

And/or the number of the groups of groups,

The water outlet caliber of the hot water connector (200) is smaller than the through hole caliber of the external screw (500) corresponding to the hot water connector, and the water outlet caliber of the cold water connector (300) is smaller than the through hole caliber of the external screw (500) corresponding to the cold water connector.

7. An electric water heating system according to any one of claims 1 to 6, characterized in that the electricity proof wall (10) comprises a housing (600), the housing (600) being formed with a receiving cavity (601), the mounting seat (100) being fixed to the receiving cavity (601).

8. The electric water heating system according to any one of claims 1 to 6, wherein the mounting base (100) includes a first base body (110) and a second base body (120) that are fastened to each other, and the electric wall waterway (101) is formed between the first base body (110) and the second base body (120); the cold water joint (300) comprises a cold water inlet pipe section (310) and a cold water outlet pipe section (320), wherein the cold water inlet pipe section (310) and the first seat body (110) are formed in a first mode, and the cold water outlet pipe section (320) and the second seat body (120) are formed in an integrated mode.

9. An electric water heating system according to any one of claims 1 to 6, wherein the electricity proof wall (10) is indirectly connected to the inner container (20) through the first pipe section (51) and the second pipe section (52), and the first pipe section (51) and the second pipe section (52) are insulating pipes.

10. The electric water heating system according to any one of claims 1 to 6, wherein the electricity-proof wall waterway (101) is one of an annular waterway, a circuitous waterway, and a spiral waterway;

And/or the number of the groups of groups,

The effective path length of the electricity-proof wall waterway (101) is 20mm-25mm, and the cross-sectional area of the electricity-proof wall waterway (101) is 60mm ²-80mm².