CN115406113A - Electric water heater with water leakage prevention function - Google Patents

Abstract

The invention discloses an electric water heater with water leakage prevention function, comprising: one of the two inner containers is provided with a main water inlet pipe, and the other inner container is provided with a main water outlet pipe; the water leakage preventing device comprises a first water pipe, a second water pipe, a pressure on-off valve and a connecting pipe, wherein a first water inlet pipe head, a first connecting pipe head and a first water outlet pipe head are arranged on the first water pipe; the second water pipe is provided with a second water inlet pipe head, a second connecting pipe head and a second water outlet pipe head which are communicated with each other, and the second water inlet pipe head is provided with a one-way valve; a pressure on-off valve is provided in the first connector head. The serious water leakage accident caused by the breakage of the inner container is reduced, and the use reliability of the electric water heater is further improved.

Description

Electric water heater with water leakage prevention function

Technical Field

The invention belongs to the technical field of household appliances, and particularly relates to an electric water heater with a water leakage prevention function.

Background

At present, a water heater is a common household appliance in daily life, the electric water heater can be divided into a water storage type electric water heater and an instant heating type electric water heater according to the heating power, and the water storage type electric water heater is provided with a water tank, so that the water storage type electric water heater has the characteristics of large water yield, stable water temperature and the like, and is purchased and used by more families.

In order to increase the volume of the water heater in the prior art, the electric water heater adopting the double-liner structure is widely used, and the two inner liners are connected through a water pipe, so that the double-liner water heater has more water pipe connecting parts. In the in-service use process, because the water pressure of municipal pipe network is great, under electric water heater non-use state, its inside pipeline still bears municipal pipe network's pressure, and then when easy inside pipeline takes place the damage, causes serious leaking easily, leads to using the reliability to descend.

In view of this, how to design an electric water heater that can reduce the occurrence of serious water leakage to improve the reliability of use is a technical problem to be solved by the present invention.

Disclosure of Invention

The invention provides an electric water heater with a water leakage prevention function, which can reduce serious water leakage accidents caused by the breakage of an inner container, and further improve the use reliability of the electric water heater.

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

in one aspect, the present invention provides an electric water heater having a water leakage preventing function, including:

one of the two inner containers is provided with a main water inlet pipe, the other inner container is provided with a main water outlet pipe, and an auxiliary connecting pipe is arranged between the two inner containers;

the anti-leakage device comprises a first water pipe, a second water pipe, a pressure on-off valve and a connecting pipe, wherein a first water inlet pipe head, a first connecting pipe head and a first water outlet pipe head are arranged on the first water pipe; the second water pipe is provided with a second water inlet pipe head, a second connecting pipe head and a second water outlet pipe head which are mutually communicated, the second water inlet pipe head is provided with a one-way valve, and the one-way valve is used for controlling water flow to flow into the second water pipe from the second water inlet pipe head in a one-way mode; the pressure on-off valve is arranged in the first connector head and is used for switching on and off a second port of the first connecting flow passage according to the water pressure at the first connector head; the connecting pipe is connected between the first connecting pipe head and the second connecting pipe head;

wherein, first water outlet pipe head with main inlet tube, second water inlet pipe head with main outlet pipe connects.

Compared with the prior art, the invention has the advantages and positive effects that: the pressure on-off valve is configured in the first water pipe, the pressure on-off valve is completely built in the first water pipe, the first water pipe is connected with a water supply pipe (tap water pipe) in a user home through the first water inlet pipe head, the first water pipe and the second water pipe are respectively installed on an electric water heater in the user home, when the electric water heater is in a use state, water introduced by the first water pipe is processed by the electric water heater and then is output from the second water pipe, at the moment, the first water pipe head and the second water pipe head are communicated through the connecting pipe, the water pressure in the first water pipe head is lower than that in the first water inlet pipe head, and at the moment, the pressure on-off valve opens the second port of the first connecting flow passage, so that the first water inlet pipe head and the first water outlet pipe head are communicated to realize water supply; when the electric water heater is in a water-off state, the water pressure in the first water pipe and the water pressure in the second water pipe are gradually the same, so that the water pressure in the first water inlet pipe head and the water pressure in the first connecting pipe head are balanced, and at the moment, the pressure on-off valve automatically resets and closes the second port of the first connecting flow channel; under the condition that water leakage occurs in the electric water heater, the second water inlet pipe head is provided with the one-way valve, so that the water pressure in the first water inlet pipe head and the water pressure in the first connecting pipe head are still in a balanced state, the water supply pipe is further ensured not to output water outwards from the first water pipe, and the leakage accident is reduced to improve the use reliability of the electric appliance.

In some embodiments of the present application, the pressure on-off valve includes a spring and a flexible sealing member, the flexible sealing member is disposed in the first connector head and used to open and close the second port of the first connection flow passage, and the spring is disposed in the first connector head and used to apply an elastic force toward the second port of the first connection flow passage to the flexible sealing member.

In some embodiments of this application, flexible seal part is formed with sealing, elastic deformation portion and installation fixed part, elastic deformation portion connects the sealing with between the installation fixed part, the sealing with the two relative arrangements of port of first connecting runner, the installation fixed part sets up on the inner wall of first connector head.

In some embodiments of the present application, the pressure on-off valve further includes an installation support member, the installation support member is disposed in the first connector head, the spring is disposed between the installation support member and the sealing portion, and the spring is configured to apply an elastic force toward the sealing portion in two directions of the port of the first connection flow passage.

In some embodiments of the present application, the mounting support comprises an outer sleeve and an inner sleeve, the outer sleeve being fitted over the outer portion of the inner sleeve, the outer sleeve and the inner sleeve forming a water flow channel therebetween; the outer sleeve is in threaded connection with the first connecting pipe head, and the spring is arranged in the inner sleeve.

In some embodiments of the present application, a mounting ring is disposed in the first water tube, and the mounting fixture is sandwiched between the mounting ring and the outer sleeve.

In some embodiments of the present application, an adjustment member is also disposed in the inner sleeve, the adjustment member being threaded into the inner sleeve and abutting against the spring.

In some embodiments of the present application, a first auxiliary joint is disposed on the first water pipe, a first partition is disposed in the first auxiliary joint, a first water inlet and a first water outlet are disposed on the first partition, and a second port of the first connection flow channel, the first water inlet, the first water outlet, and the first water outlet pipe head are sequentially connected;

the first auxiliary joint is provided with a first switch valve, and the first switch valve is arranged opposite to the first partition plate and is used for switching the first water inlet and/or the first water outlet.

In some embodiments of the present application, a second connection flow channel is further disposed in the second water pipe, the first port of the second connection flow channel is communicated with the second water inlet pipe head, and the second port of the second connection flow channel is communicated with the second connection pipe head and the second water outlet pipe head respectively.

In some embodiments of the present application, a second auxiliary joint is disposed on the second water pipe, a second partition is disposed in the second auxiliary joint, a second water inlet and a second water outlet are disposed on the first partition, a second port of the second connection flow channel is the second water inlet, and the second water outlet is respectively communicated with the second water outlet pipe head and the second connector pipe head;

and a second switch valve is arranged in the second auxiliary joint and is opposite to the second partition plate and used for switching the second water inlet and/or the second water outlet.

In some embodiments of the present application, the heating device further includes two sets of heating elements, each set being fixed to a corresponding flange of the inner container and extending into the inner container;

wherein the heating member set includes a first heating member and a second heating member; the first heating part is arranged along the axial direction of the inner container, and the second heating part is attached to the side wall of the inner container.

In some embodiments of the present application, the first heating member has a length that is less than a length of the second heating member.

In some embodiments of this application, the second heating part includes fixed part, kink and extension that connect gradually, the fixed part with first heating part arranges side by side, the kink orientation the lateral wall direction of inner bag extends, the extension is followed the axial of inner bag is pressed close to the lateral wall of inner bag extends.

In some embodiments of the present application, the heating device further comprises a range switch for controlling the first heating member and the second heating member in the same inner container, and the range switch comprises four ranges: the first heating member and the second heating member are turned off at the same time, only the first heating member is turned on, only the second heating member is turned on, and the first heating member and the second heating member are turned on at the same time.

In some embodiments of the present application, the liner includes a first liner and a second liner; the first heating part comprises a first heating pipe and a third heating pipe; the second heating part comprises a second heating pipe and a fourth heating pipe; wherein the first heating pipe and the second heating pipe are positioned in the first inner container; the third heating pipe and the fourth heating pipe are positioned in the second inner container.

In some embodiments of the present application, the second heating pipe and the fourth heating pipe are respectively attached to a side wall of the first inner container and a side wall of the second inner container.

In some embodiments of the present application, the temperature controller is connected in series with the position switch; the other end of the temperature controller is connected in series with the temperature limiter connected in parallel.

In some embodiments of the present application, the range switches include a first range switch and a second range switch; the temperature controller comprises a first temperature controller and a second temperature controller.

In some embodiments of the present application, the first heating pipe and the second heating pipe are connected in parallel and then sequentially connected in series with the first gear switch and the first temperature controller to form a first inner container heating group; and the third heating pipe and the fourth heating pipe are connected in parallel and then sequentially connected in series with the second gear switch and the second temperature controller to form a second inner container heating group.

In some embodiments of the present application, the first and second liner heating groups are connected in parallel with the temperature limiter; the temperature limiter comprises a first temperature limiter and a second temperature limiter which are connected in parallel.

In some embodiments of the present application, when the water heater is installed in a vertical position, the first heating pipe and the third heating pipe are in an open state; the second heating pipe and the fourth heating pipe are in a closed state.

In some embodiments of the present application, when the water heater is installed horizontally, the second heating pipe and the fourth heating pipe are in an open state; the first heating pipe and the third heating pipe are in a closed state.

In some embodiments of the present application, the main water inlet pipe comprises a main pipe and a pipe sleeved inside the main pipe; the free end of the main pipe is close to the water inlet end of the first inner container and is bent towards the side wall of the first inner container.

In some embodiments of the present application, the free end of the main pipe is provided with a first water hole, and the first water hole is distributed on a pipe wall at one side close to the water inlet end;

the pipe is provided with a second water hole along the pipe wall, and the second water hole is distributed on the pipe wall at one side far away from the water inlet end.

In some embodiments of the present application, the tubing is an axisymmetric structure having an inner diameter at both ends thereof that is greater than an inner diameter at a center thereof.

In some embodiments of the present application, the free end of the main pipe is provided with a plugging cap for fixing the main pipe and the pipe.

Furthermore, the free end of the main water outlet pipe is far away from the water outlet end of the second inner container and is bent towards the side wall of the second inner container.

In some embodiments of the present application, a first connection pipe connected to the auxiliary connection pipe is disposed in the first inner container, and a free end of the first connection pipe is far away from a water inlet end of the first inner container.

In some embodiments of the present application, a second connecting pipe connected to the auxiliary connecting pipe is disposed in the second inner container, and a free end of the second connecting pipe is close to a water outlet end of the second inner container.

In some embodiments of the present application, a water inlet portion is disposed along a pipe wall of the second connection pipe, and the water inlet portion is a regularly distributed hole site.

In some embodiments of the present application, a groove is provided in the second connection pipe, and a notch of the groove is located at a free end of the second connection pipe.

In some embodiments of the present application, the groove has a greater inner diameter at the mouth than at the base.

Drawings

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

FIG. 1 is a schematic structural diagram of an electric water heater with a water leakage prevention function according to the present invention;

FIG. 2 is a schematic view of a water leakage preventing device;

FIG. 3 isbase:Sub>A sectional view taken along line A-A of FIG. 2;

FIG. 4 is a sectional view taken along line B-B of FIG. 2;

FIG. 5 is an enlarged view of a portion of the area C in FIG. 3;

FIG. 6 is a cross-sectional view of the first water tube;

FIG. 7 is a cross-sectional view of a second water tube;

FIG. 8 is an exploded view of the pressure on-off valve;

FIG. 9 is a schematic view of a partial structure of an electric water heater with a water leakage prevention function according to the present invention;

FIG. 10 is a schematic view of a second partial structure of the electric water heater with water leakage prevention function according to the present invention;

FIG. 11 is a schematic view of a third partial structure of the electric water heater with water leakage prevention function according to the present invention;

FIG. 12 is a schematic view of a fourth embodiment of an electric water heater with a water leakage prevention function according to the present invention;

FIG. 13 is a schematic circuit diagram of an electric water heater with a water leakage preventing function according to the present invention;

FIG. 14 is a schematic structural view of a main tube;

FIG. 15 is a schematic view of a piping structure;

FIG. 16 is a schematic view of a second connecting tube;

fig. 17 is a cross-sectional view of the second connection pipe.

Description of reference numerals:

a first inner container 100;

a first heating pipe 110; a second heating pipe 120; a first flange 130;

a second inner container 200;

a third heating pipe 210; a fourth heating pipe 220; a second flange 230;

a main water inlet pipe 300; a main pipe 311, a pipe 312, and a first water hole 313; second water hole 314

A main water outlet pipe 400;

an auxiliary connection pipe 500; a first connection pipe 510; a second connection pipe 520, a water inlet part 521, and a groove 522;

a first temperature limiter 610; a second temperature limiter 620;

a first thermostat 710; a second thermostat 720;

a first gear switch 810; a second gear opening light 820;

a water leakage preventing means 900;

a first water pipe 9100;

the first water inlet pipe head 9101, the first connector head 9102, the first water outlet pipe head 9103, a first connecting flow passage 9104, a mounting ring 9105, a first auxiliary connector 9106, a first partition 9107 and a first switch valve 9108;

a second water pipe 9200;

a second water inlet pipe head 9201, a second connector pipe head 9202, a second water outlet pipe head 9203, a second connecting flow channel 9204, a second auxiliary connector 9205, a second partition 9206, a second switch valve 9207 and a one-way valve 9208;

a pressure on/off valve 9300;

a spring 9301, a flexible sealing member 9302, a mounting support 9303, an adjusting member 9304;

a sealing part 93021, an elastic deformation part 93022, and a fixing part 93023;

an outer sleeve 93031, an inner sleeve 93032 and a water flow channel 93033;

connecting tube 9400.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

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

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present invention, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation that the first and second features are not in direct contact, but are in contact via another feature between them. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

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

The electric water heater adopts electric energy as a main energy material, and high-temperature heat generated after electrification directly heats water stored in the electric water heater so as to achieve the purpose of preparing hot water.

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

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

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

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

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

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

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

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

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

In a first embodiment, referring to fig. 1 to 8, the present invention provides an electric water heater with a water leakage prevention function, including:

a housing forming an installation space;

the sealing heads of the inner containers are provided with flanges;

the main water inlet pipe 300 is extended into one of the inner containers, and the main water inlet pipe 300 extends into the inner container;

the main water outlet pipe 400 extends into the other inner container;

an auxiliary connection pipe 500 installed between the inner containers;

leak protection water installation 900, it includes:

the first water pipe 9100 is provided with a first water inlet pipe head 9101, a first connecting pipe head 9102 and a first water outlet pipe head 9103, a first connecting flow passage 9104 is further arranged in the first water pipe 9100, a first port of the first connecting flow passage 9104 is communicated with the first water inlet pipe head 9101, and a second port of the first connecting flow passage 9104 is communicated with the first water outlet pipe head 9103;

the second water pipe 9200 is provided with a second water inlet pipe head 9201, a second connecting pipe head 9202 and a second water outlet pipe head 9203 which are communicated with each other, the second water inlet pipe head 9201 is provided with a one-way valve 9208, and the one-way valve is used for controlling water flow to flow into the second water pipe 9200 from the second water inlet pipe head 9201 in a one-way manner;

a pressure on/off valve 9300, the pressure on/off valve 9300 being provided in the first connector head 9102 and being used to switch the second port of the first connection flow passage 9104 according to the water pressure at the first connector head 9102;

a connection tube 9400, the connection tube 9400 is connected between the first connector head 9102 and the second connector head 9202.

Specifically, the water leakage prevention device 900 provided by the embodiment of the present application is used for being installed on an electric water heater in a home of a user to perform water leakage prevention protection on the electric water heater.

The leakage preventing device 900 mainly includes a first water pipe 9100, a second water pipe 9200, a pressure on-off valve 9300 and a connecting pipe 9400.

The first water inlet pipe head 9101 of the first water pipe 9100 is used for being connected with an external water supply pipe to introduce tap water of a municipal pipe network, and the first water outlet pipe head 9103 of the first water pipe 9100 is connected with a water inlet pipe orifice of an electric water heater in a user's home to convey the tap water into the electric water heater.

The second water inlet tube head 9201 of the second water tube 9200 is used for connecting with the water outlet of the electric water heater, so that the water treated by the electric water heater is output. The second outlet nozzle 9203 of the second water pipe 9200 is connected with a water using terminal of a user's home to realize the final output of water.

The first water pipe 9100 and the second water pipe 9200 are connected by a connecting pipe 9400, so that the first connector 102 and the second connector 202 are communicated with each other.

The pressure on/off valve 9300 in the first connector 102 can operate in response to the pressure generated between the water pressure in the first connector 102 and the second port of the first connection flow path 9104, thereby preventing water leakage.

In the using process, under the normal condition, the conventional electric water heater is provided with two external connectors for connecting external water pipes, when the conventional electric water heater is installed, the first water outlet pipe head 9103 is connected with one external connector of the electric water heater, and the second water inlet pipe head 9201 is connected with the other external connector of the electric water heater.

In the process that the user used water through the water terminal, second water pipe 9200 then passed through this moment the second outlet pipe is connected with the water terminal and is upwards exported water, and at this moment, the water pressure in the second water pipe 9200 reduces compared in the water pressure that first water inlet tube head 9101 goes out, and meanwhile, first connector head 102 is owing to communicate with second connector head 202 through connecting pipe 9400, and then makes the water pressure of first connector head 102 department also correspondingly reduce. The water introduced from the first water inlet pipe head 9101 is outputted through the second top-opening pressure on-off valve 9300 of the first connection flow passage 9104 and finally flows into the electric water heater through the first water outlet pipe head 9103.

And after the user closes the water use terminal, since the tap water pressure of the external water supply pipe is transferred to the second water pipe 9200 and the water pressure of the first connector stub 102 is gradually increased and finally identical to the water pressure in the first water inlet stub 9101, at this time, the pressure on-off valve 9300 will be automatically reset to close the second port of the first connection flow passage 9104.

At this time, if the electric water heater is broken and leaks water, since the second water inlet pipe head 9201 of the second pipe body is provided with the check valve, the water end is leaked, the change of the water pressure in the second pipe body is not caused, and the pressure on-off valve 9300 is always in a state of closing the second port of the first connecting flow channel 9104, and finally, the serious leakage caused by inputting the tap water into the electric water heater under the condition that the electric water heater is damaged is avoided.

The pressure on-off valve is arranged in the first water pipe, the pressure on-off valve is completely built in the first water pipe, the first water pipe is connected with a water supply pipe (tap water pipe) in a user home through the first water inlet pipe head, the first water pipe and the second water pipe are respectively installed on an electric water heater in the user home, when the electric water heater is in a use state, water introduced by the first water pipe is processed by the electric water heater and then is output from the second water pipe, at the moment, because the connecting pipe is communicated with the first connecting pipe head and the second connecting pipe head, the water pressure in the first connecting pipe head is lower than that in the first water inlet pipe head, at the moment, the pressure on-off valve opens the second port of the first connecting flow passage, so that the first water inlet pipe head and the first water outlet pipe head are communicated to realize water supply. When the electric water heater is in a water-off state, the water pressures in the first water pipe and the second water pipe are gradually the same, so that the water pressures in the first water inlet pipe head and the first connecting pipe head are balanced, and at the moment, the pressure on-off valve automatically resets and closes the second port of the first connecting flow channel; under the condition that water leakage occurs in the electric water heater, the second water inlet pipe head is provided with the one-way valve, so that the water pressure in the first water inlet pipe head and the water pressure in the first connecting pipe head are still in a balanced state, the water supply pipe is further ensured not to output water outwards from the first water pipe, and the leakage accident is reduced to improve the use reliability of the electric appliance.

In some embodiments, the pressure on/off valve 9300 relies primarily on the difference in water pressure between the first inlet stub 9101 and the first connector stub 102 to achieve mechanical on/off control. For this, the pressure on-off valve 9300 may include a spring 9301 and a flexible sealing member 9302, the flexible sealing member 9302 being disposed in the first connector head 9102 and serving to open and close the second port of the first connection flow passage 9104, the spring 9301 being disposed in the first connector head 9102 and serving to apply an elastic force to the flexible sealing member 9302 in a direction toward the second port of the first connection flow passage 9104.

Specifically, the flexible sealing member 9302 is disposed opposite to the second port of the first connection flow passage 9104 and serves to block the second port of the first connection flow passage 9104. The two sides of the flexible sealing part 9302 in the first connector 102 are respectively acted by water pressure in different pipe heads, so as to realize deformation according to different pressure differences, and further switch the second port of the first connection flow channel 9104.

In the process that the user passes through water terminal use water, the water pressure in the first connector 102 reduces, under the effect of two department's of port water pressure of first connection runner 9104, will make flexible sealing part 9302 take place deformation and then open port two of first connection runner 9104, from first water inlet tube head 9101 enter into water in the first water pipe 9100 from the output of port two of first connection runner 9104 and finally follow first water outlet tube head 9103 and flow into the electric water heater.

When the user closes the water use terminal and stops using water, the water pressure in the first connector head 102 gradually rises to gradually offset the water pressure generated by the second port of the first connection flow passage 9104, and under the action of the spring 9301, the flexible sealing member 9302 deforms toward the second port of the first connection flow passage 9104 and finally blocks the second port of the first connection flow passage 9104.

In some embodiments, in order to facilitate mounting of the flexible sealing member 9302, the flexible sealing member 9302 is formed with a sealing portion 93021, an elastic deformation portion 93022 and a mounting fixing portion 93023, the elastic deformation portion 93022 is connected between the sealing portion 93021 and the mounting fixing portion 93023, the sealing portion 93021 is disposed opposite to the second port of the first connection flow passage 9104, and the mounting fixing portion 93023 is provided on an inner wall of the first connector head 9102.

Specifically, the sealing portion 93021 formed by the flexible sealing member 9302 is used for blocking the second port of the first connection flow passage 9104, the elastic deformation portion 93022 is used for meeting the requirement that the sealing portion 93021 can open and close the second port of the first connection flow passage 9104 under the action of different water pressures, and the mounting fixing portion 93023 is used for being mounted in the first connector 102.

In some embodiments, the pressure on-off valve 9300 further includes a mounting support 9303, the mounting support 9303 is disposed in the first connector housing 102, a spring 9301 is disposed between the mounting support 9303 and the sealing portion 93021, and the spring 9301 serves to apply elastic force to the sealing portion 93021 in a direction toward the port of the first connection flow passage 9104.

Specifically, in order to facilitate the installation of the spring 9301 in the first connector 102, the installation support 9303 may be disposed in the first connector 102 by a screw connection, an interference fit, or the like, and the spring 9301 may be supported by the installation support 9303, so that the spring 9301 may provide an effective elastic force to the sealing portion 93021.

The mounting support 9303 comprises an outer sleeve 93031 and an inner sleeve 93032, the outer sleeve 93031 is sleeved outside the inner sleeve 93032, and a water flow channel 93033 is formed between the outer sleeve 93031 and the inner sleeve 93032; an outer sleeve 93031 is threaded into the first connector head 102 and a spring 9301 is disposed in an inner sleeve 93032.

Specifically, when assembled, the outer sleeve 93031 is threadably mounted within the first connector head 102, and because the outer sleeve 93031 and the inner sleeve 93032 are coupled to one another, the mounting spring 9301 can be supported by the inner sleeve 93032.

The inner sleeve 93032 can be arranged in a suspended manner in the outer sleeve 93031 by connecting rods between the outer sleeve 93031 and the inner sleeve 93032, so that a water flow channel 93033 is formed.

The water flow channel 93033 can meet the requirement that water pressure in the connecting pipe 9400 is directly transmitted to the flexible sealing part 9302, so that the water path is smooth, and the water pressure can be accurately transmitted.

In some embodiments, to fixedly mount the flexible sealing member 9302, a mounting ring 9105 is provided in the first water tube 9100, and the mounting fixing portion 93023 is sandwiched between the mounting ring 9105 and the outer sleeve 93031.

Specifically, a mounting ring 9105 is disposed on one side of the first connection flow passage 9104 on the inner wall of the first water pipe 9100, and the mounting ring 9105 is fitted with the outer sleeve 93031 to fix the flexible sealing member 9302.

During assembly, the flexible sealing part 9302 is placed into the first connector head 102 and abuts against the mounting ring 9105, then the outer sleeve 93031 is inserted into the first connector head 102, and after the outer sleeve 93031 is mounted in place, the mounting fixing portion 93023 is clamped between the mounting ring 9105 and the outer sleeve 93031, so that the flexible sealing part 9302 is fixedly mounted.

In some embodiments, an adjustment member 9304 is also disposed in inner sleeve 93032, and adjustment member 9304 is threaded into inner sleeve 93032 and abuts against spring 9301.

Specifically, there is a certain difference to the water pressure of the water supply network in different areas, and for this reason, the elastic force generated by the spring 9301 to the flexible sealing member 9302 needs to be correspondingly adjusted according to the local water pressure, so as to ensure that the flexible sealing member 9302 can play a good role in sealing the first connecting flow channel 9104.

In the practical use process, when the operating personnel installs at user's home, before connecting pipe 9400 at first water pipe 9100 and second water pipe 9200, can be through adjusting part 9304 to change the deformation volume under the spring 9301 initial state, and then realize satisfying the water pressure requirement of local water supply network. For the adjusting member 9304, a screw member such as a bolt can be preferably used.

And after the initial amount of deformation of the spring 9301 is adjusted, the connection pipe 9400 can be connected between the first water pipe 9100 and the second water pipe 9200.

In another embodiment, in order to facilitate a user to directly perform a waterway switching operation on the water leakage preventing device 900, a first auxiliary joint 9106 is disposed on the first water pipe 9100, a first partition 9107 is disposed in the first auxiliary joint 9106, a first water inlet (not marked) and a first water outlet (not marked) are disposed on the first partition 9107, and a second port of the first connecting flow passage 9104, the first water inlet, the first water outlet and the first water outlet pipe head 9103 are sequentially connected;

a first switch valve 9108 is arranged in the first auxiliary joint 9106, and the first switch valve 9108 is arranged opposite to the first partition 9107 and is used for switching the first water inlet and/or the first water outlet.

Specifically, in the actual use process, when the user needs to completely close the water leakage prevention device 900, the first switch valve 9108 can be operated to act, the first water inlet is switched on and off through the first switch valve 9108, and/or the first water outlet is switched on and off through the first switch valve 9108 so as to actively control the flow path between the first water inlet pipe head 9101 and the first water outlet pipe head 9103, and further, when the water leakage prevention device 900 is completely closed as required, the use reliability is further improved.

The specific structure of the first on-off valve 9108 can adopt a valve core structure in a conventional water valve, and is not limited or described herein.

In another embodiment, a second connection flow passage 9204 is further disposed in the second water pipe 9200, a first port of the second connection flow passage 9204 is communicated with the second water inlet pipe head 9201, and a second port of the second connection flow passage 9204 is respectively communicated with the second connection pipe head 9202 and the second water outlet pipe head 9203.

Specifically, in order to satisfy the requirement of supplying water to both the second outlet pipe head 9203 and the second connector pipe head 202, the second inlet pipe head 9201 is provided with a second connection flow path 9204 in the second water pipe 9200 to distribute water flow.

Similarly, in order to completely close the second water pipe 9200, a second auxiliary connector 9205 is arranged on the second water pipe 9200, a second partition 9206 is arranged in the second auxiliary connector 9205, a second water inlet and a second water outlet are arranged on the first partition 9107, a second port of the second connection flow channel 9204 is the second water inlet, and the second water outlet is respectively communicated with a second water outlet pipe head 9203 and a second connector pipe head 202; a second on-off valve 9207 is disposed in the second auxiliary connector 9205, and the second on-off valve 9207 is disposed opposite to the second partition 9206 and is used for opening and closing the second water inlet and/or the second water outlet.

Specifically, in the in-service use process, when the user needs to completely close the second water pipe 9200, then can operate second ooff valve 9207 action, come the switch second water inlet through second ooff valve 9207 and/or the second delivery port is in order to realize the active control break-make second water inlet tube head 9201 and the second flow path between the second delivery port 9203 and the second connector tube head 202, and then closes the second water pipe completely as required, and then more is favorable to further improvement to use the reliability.

The specific structure of the second switch valve 9207 may adopt a valve core structure in a conventional water valve, and is not limited and described herein.

In a second embodiment, based on the first embodiment, optionally, as shown in fig. 9 to 17, each inner container of the electric water heater with a water leakage prevention function is configured with a heating component set, where the heating component set includes a first heating part and a second heating part; the first heating part is arranged along the axial direction of the inner container, and the second heating part is attached to the side wall of the inner container.

Further, the inner container comprises a first inner container 100 and a second inner container 200; the first heating part includes a first heating pipe 110 and a third heating pipe 210; the second heating part includes a second heating pipe 120 and a fourth heating pipe 220; wherein the first heating pipe 110 and the second heating pipe 120 are located in the first inner container 100; the third heating pipe 210 and the fourth heating pipe 220 are located in the second inner container 200.

Specifically, the first heating pipe 110 and the third heating pipe 210 have the same structure, and the second heating pipe 120 and the fourth heating pipe 220 have the same structure, so the first heating pipe 110 and the second heating pipe 120 in the first inner bag 100 will be described as an example.

The first heating pipe 110 is a U-shaped heating pipe symmetrically arranged; the first heating pipe 110 is positioned at the water inlet end of the first inner container 100; the fixed end of the second heating pipe 120 is located at the same position as the fixed end of the first heating pipe 110. The second heating pipe 120 is substantially divided into three parts, a first part is a fixed part arranged in parallel with the first heating pipe 110, a second part is a bent part extending toward the sidewall of the first inner container 100, and a third part is an extended part extending along the axial direction of the first inner container 100 and close to the sidewall of the first inner container 100.

Further, in the using process, when the water heater is vertically installed, cold water is concentrated at one end of the first inner container 100 or the second inner container 200, so that only the first heating pipe 110 in the first inner container 100 and the third heating pipe 210 in the second inner container 200 can be controlled to be started for heating, and the whole inner container of water can be heated according to the principle that the density of hot water is low; when the horizontal type installation is carried out, cold water is concentrated at one side wall of the first inner container 100 or the second inner container 200, so that the second heating pipe 120 in the first inner container 100 and the fourth heating pipe 220 in the second inner container 200 can be controlled to be opened only for heating; the hot water in the whole inner container can be uniformly heated, and a user can enjoy more hot water after heating is finished.

The invention provides an electric water heater with a water leakage prevention function, which is characterized in that two heating parts are respectively arranged in a first inner container and a second inner container: a first heating member and a second heating member; the first heating part or the second heating part is controlled to heat according to different installation modes of the water heater, so that excellent heating performance in vertical installation or horizontal installation is ensured; meanwhile, the product is unified and standardized, and the convenience of user installation is improved. In addition, the second connecting pipe provided by the invention enables inlet water to be discharged slowly from the lower end as much as possible by compressing the upper space, and avoids that pressure cold water is basically discharged from the top end of the main water inlet pipe, so that cold water and hot water are mixed in the liner, and a large amount of ineffective hot water is generated.

In some embodiments, the electric water heater with water leakage prevention function comprises a shift switch for controlling a first heating component and a second heating component in the same inner container, wherein the shift switch comprises four shift positions: the first heating member and the second heating member are turned off at the same time, only the first heating member is turned on, only the second heating member is turned on, and the first heating member and the second heating member are turned on at the same time.

Further, the temperature controller is connected with the gear switch in series; the other end of the temperature controller is connected in series with the temperature limiter connected in parallel.

Further, the range switches include a first range switch 810 and a second range switch 820; specifically, the first gear switch 810 is provided with four gears: the first heating pipe 110 is only connected at the first gear, the second heating pipe 120 is only connected at the second gear, the first heating pipe 110 and the second heating pipe 120 are simultaneously connected at the third gear, and the first heating pipe 110 and the second heating pipe 120 are simultaneously disconnected at the fourth gear.

Likewise, second position switch 820 is also provided with four positions: the first gear is to switch on the third heating pipe 210 only, the second gear is to switch on the fourth heating pipe 220 only, the third gear is to switch on the third heating pipe 210 and the fourth heating pipe 220 simultaneously, and the fourth gear is to switch off the third heating pipe 210 and the fourth heating pipe 220 simultaneously.

The thermostat includes a first thermostat 710 and a second thermostat 720.

Further, the first heating pipe 110 and the second heating pipe 120 are connected in parallel and then sequentially connected in series with the first gear switch 810 and the first temperature controller 710 to form a first inner container heating group; the third heating pipe 210 and the fourth heating pipe 220 are connected in parallel and then sequentially connected in series with the second gear switch 820 and the second temperature controller 720 to form a second inner container heating group.

Further, the first inner container heating group, the second inner container heating group and the temperature limiter are connected in parallel; the temperature limiter includes a first temperature limiter 610 and a second temperature limiter 620 connected in parallel.

Specifically, the first temperature limiter 610 and the second temperature limiter 620 collect heating temperatures in the first liner 100 and the second liner 200, respectively, and when the temperature in any liner reaches a warning value, the first temperature limiter 610 or the second temperature limiter 620 is turned off, so that heating of each heating component is suspended.

Further, according to the gear settings of the first gear switch 810 and the second gear switch 820, the water heater in this embodiment may have the following usage scenarios:

for a vertically mounted water heater, reference may be made to fig. 9 or 10:

scene one, meeting the requirement of a user on a small amount of water:

the water heater can heat hot water with the rated volume of about 1/4 to meet the requirements of users for washing, washing vegetables and using water, the control mode is that the first temperature controller 710 is switched on, the second temperature controller 720 is switched off, and the first gear switch 810 is switched to the I gear to only switch on the first heating pipe 110.

Scene two, meeting the requirement of a user on proper water consumption:

the water heater can heat hot water with the rated volume of about 1/2 to meet the requirements of users for washing dishes or bathing water for a single person, the control mode is to switch on the first temperature controller 710 and switch off the second temperature controller 720, the first gear switch 810 is switched to the II gear, only the second heating pipe 120 is switched on, and then the hot water in the upper right liner can be heated, or the control mode is to switch on the first temperature controller 710 and switch off the second temperature controller 720 simultaneously, and the first gear switch 810 is switched to the III gear and simultaneously switch on the first heating pipe 110 and the second heating pipe 120, and then the hot water in the right liner can be rapidly heated.

Scene three, meeting the requirement of a large amount of water for users:

the heating device can heat about 3/4 rated volume of hot water to meet the requirements of users for washing dishes and bathing water for a single person, the control mode is to switch on the first temperature controller 710 and switch on the second temperature controller 720 at the same time, the first gear switch 810 is switched to II gear and only switch on the second heating pipe 120, the second gear switch 820 is switched to I gear and only switch on the third heating pipe 210, and then about 3/4 rated volume of hot water can be heated, or the control mode is to switch on the first temperature controller 710 and switch on the second temperature controller 720 at the same time, the first gear switch 810 is switched to III gear and simultaneously switch on the first heating pipe 110 and the second heating pipe 120, and the second gear switch 820 is switched to I gear and only switch on the third heating pipe 210.

Scene four, satisfy user's a large amount of water:

the double-container hot water can be heated, a large amount of water consumption of users and a plurality of users can be met, the control mode is that the first temperature controller 710 is switched on and the second temperature controller 720 is switched on at the same time, the first gear switch 810 is switched to a II gear and only the second heating pipe 120 is switched on, the second gear switch 820 is switched to a II gear and only the fourth heating pipe 220 is switched on and the double-container hot water can be heated, or the control mode is that the first temperature controller 710 is switched on and the second temperature controller 720 is switched on at the same time, the first gear switch 810 is switched to a III gear and simultaneously the first heating pipe 110 and the second heating pipe 120 are switched on, and the second gear switch 820 is switched to a III gear and simultaneously the third heating pipe 210 and the fourth heating pipe 220 can quickly obtain the double-container hot water.

For a horizontally mounted water heater, reference may be made to fig. 11 or 12:

scene one, meeting the requirement of a user on a small amount of water:

the water heater can heat hot water with the rated volume of about 1/4 to meet the requirements of users for washing, washing vegetables and using water, the control mode is that the first temperature controller 710 is switched on, the second temperature controller 720 is switched off, and the first gear switch 810 is switched to the II gear and only the second heating pipe 120 is switched on.

Scene two, meeting the requirement of a user on proper water consumption:

the water heater can heat about 1/2 of rated volume of hot water to meet the requirements of users for washing dishes or bathing water for a single person, and is controlled in a mode that the first temperature controller 710 is switched on and the second temperature controller 720 is switched off, and the first gear switch 810 is switched to the III gear and the first heating pipe 110 and the second heating pipe 120 are switched on to rapidly heat the lower container hot water.

Scene three, meeting the requirement of a large amount of water for users:

the heating device can heat hot water with a rated volume of about 3/4 to meet the requirements of users for washing dishes and bathing water for a single person, and is controlled in a manner that the first temperature controller 710 is switched on and the second temperature controller 720 is switched on simultaneously, the first gear switch 810 is switched to the III gear to switch on the first heating pipe 110 and the second heating pipe 120 simultaneously, and the second gear switch 820 is switched to the I gear to switch on only the fourth heating pipe 220.

Scene four, meeting the requirement of a large amount of water consumption of a user:

the double-liner whole-liner hot water can be heated, a large amount of water consumption of a user and a plurality of users can be met, the control mode is that the first temperature controller 710 is switched on and the second temperature controller 720 is switched on at the same time, the first gear switch 810 is switched to a II gear and only the second heating pipe 120 is switched on, the second gear switch 820 is switched to a II gear and only the fourth heating pipe 220 is switched on to heat the whole-liner hot water, or the control mode is that the first temperature controller 710 is switched on and the second temperature controller 720 is switched on at the same time, the first gear switch 810 is switched to a III gear and simultaneously the first heating pipe 110 and the second heating pipe 120 are switched on, and the second gear switch 820 is switched to a III gear and simultaneously the third heating pipe 210 and the fourth heating pipe 220 are switched on to quickly obtain the whole-liner hot water.

In some embodiments, the main water inlet pipe 300 comprises a main pipe 311 and a pipe 312 sleeved in the main pipe 311; the free end of the main pipe 311 is close to the water inlet end 400 of the first inner container 100 and is bent toward the side wall of the first inner container 100.

Further, the main pipe 311 is L-shaped in overall structure, and a first water hole 313 is formed at a free end of the main pipe, and the first water hole 313 is formed along one side of the pipe wall and is located on the pipe wall close to the water inlet end;

the pipe 312 has a second water hole 314 along the pipe wall, and the second water hole 314 is distributed on the pipe wall at a side far away from the water inlet end.

Specifically, after the pipe 312 is fitted into the main pipe 311, the first water hole 313 and the second water hole 314 are provided to face each other. When the first inner container 100 and the second inner container 200 are vertically arranged in the horizontal direction, the water inlet process of the first main water inlet pipe 300 is as follows: the cold water enters the pipe 312 through the main pipe 311, enters the main pipe 311 again through the second water hole 314 on the left side of the pipe 312, and slowly flows into the right space of the first inner container 100 through the first water hole 313 on the right side of the main pipe 311, and the hot water can be slowly pushed into the second inner container 200 as the heating time of the heating pipe progresses. Similarly, when the first inner container 100 and the second inner container 200 are disposed left and right in the vertical direction, the water inlet process of the first main water inlet pipe 300 is as follows: the cold water enters the pipe 312 through the main pipe 311, enters the main pipe 311 again through the second water hole 314 at the upper side of the pipe 312, and slowly flows into the lower space of the first inner container 100 through the first water hole 313 at the lower side of the main pipe 311, and the hot water can be slowly pushed into the second inner container 200 as the heating time of the heating pipe is increased.

This first main inlet tube 300's setting reduces the rivers impact force through once returning water to according to inner bag structural feature, cold water is easier with the hot water layering, and then promotes an electric water heater performance that has leak protection water function.

Further, the pipe 312 has an axisymmetric structure, and the inner diameters of both ends thereof are larger than the inner diameter of the center thereof. That is, both ends of the pipe 312 are formed in a trumpet shape, so that cold water is prevented from directly entering the main pipe when entering the pipe 312 from the main pipe 311 for the first time, and the water flow direction of the cold water is prevented from being affected.

Further, a cap (not shown) is provided at a free end of the main pipe 311 to fix the main pipe 311 and the pipe 312 so as to prevent cold water from directly flowing out from the free end of the main pipe 311.

Further, the free end of the main water outlet pipe 400 is far away from the water outlet end of the second inner container 200 and is bent towards the side wall of the second inner container 200. Specifically, when the first inner container 100 and the second inner container 200 are vertically disposed in the horizontal direction, the free end of the first main water outlet pipe 400 is extended from the right end to the left end of the second inner container 200, and is bent upward at the left end to a position close to the inner wall, so as to improve the output rate of the hot water in the second inner container 200. Similarly, when the first inner container 100 and the second inner container 200 are disposed left and right in the vertical direction, the free end of the first main water outlet pipe 400 extends from the lower end to the upper end of the second inner container 200, and the upper end is bent to the left to a position close to the inner wall, so as to increase the output rate of the hot water in the second inner container 200.

Further, a first connection pipe 510 connected to the auxiliary connection pipe 500 is disposed in the first inner container 100, and a free end of the first connection pipe 510 is far away from a water inlet end of the first inner container 100. The first connection pipe 510 is used to transfer the heated hot water in the first inner container 100 to the second inner container 200 for continuous heating. Specifically, when the first and second inner containers 100 and 200 are vertically disposed in the horizontal direction, the free end of the first connection pipe 510 is extended from the right end to the left end of the first inner container 100, so as to increase the output rate of the hot water in the first inner container 100. Similarly, when the first and second inner containers 100 and 200 are vertically disposed in the left-right direction, the free end of the first connection pipe 510 is extended from the lower end of the first inner container 100 to the upper end thereof, so as to increase the output rate of the hot water in the second inner container 200.

Further, a second connecting pipe 520 connected to the auxiliary connecting pipe 500 is disposed in the second inner container 200, and a free end of the second connecting pipe 520 is close to a water outlet end of the second inner container 200.

Further, a water inlet portion 521 is disposed along the wall of the second connecting pipe 520, and the water inlet portion 521 is a hole position regularly distributed.

In some embodiments, referring to fig. 17, a groove 522 is formed in the second connection pipe 520, and the notch of the groove 522 is located at the free end of the second connection pipe 520. The groove 522 is provided to effectively compress the upper space of the second connection pipe 520, thereby preventing the concentrated water from being sprayed out from the top of the second connection pipe 520.

Further, the groove 522 has a groove opening inner diameter greater than a groove bottom inner diameter. The water flow in the second connection pipe 520 is buffered, so that the water flow flows out at the same flow rate at the hole position at the upper part of the second connection pipe 520.

When setting up about vertical direction to first inner bag 100 and second inner bag 200, water after first inner bag 100 heats carries out the secondary heating at second inner bag 200 after entering into second connecting pipe 520 by auxiliary connecting pipe 500, the setting of this second connecting pipe 520 structure effectively slows down cold water and directly upwards strikes, can make cold water follow the slow flow of all hole sites of second connecting pipe 520, through the influence of gravity again, cold water can be followed the bottom and slowly pushed away hot water to the top of second inner bag 200.

In some embodiments, the first and second inner containers 100 and 200 are disposed right and left in a vertical direction, and the main water inlet pipe 300 connected to the first inner container 100 has a structure as shown in fig. 16, that is, the second connecting pipe 520 in the above embodiments may be used as a water pipe for cold water in the water supply network to enter the first inner container 100. Can realize slowing down cold water directly upwards impact equally, can make cold water follow the slow flow of all hole sites of main inlet tube, influence cold water again and can follow the bottom of first inner bag 100 and slowly push away hot water to the top of first inner bag 100 through gravity.

In the above embodiments, unless otherwise specified, it is assumed that each inner container is provided with an electric heating part.

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

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

Claims (10)

1. An electric water heater with water leakage prevention function, comprising:

the water inlet pipe is arranged on one of the two inner containers, the water outlet pipe is arranged on the other inner container, and an auxiliary connecting pipe is arranged between the two inner containers;

the anti-leakage device comprises a first water pipe, a second water pipe, a pressure on-off valve and a connecting pipe, wherein a first water inlet pipe head, a first connecting pipe head and a first water outlet pipe head are arranged on the first water pipe; the second water pipe is provided with a second water inlet pipe head, a second connecting pipe head and a second water outlet pipe head which are communicated with each other, the second water inlet pipe head is provided with a one-way valve, and the one-way valve is used for controlling water flow to flow into the second water pipe from the second water inlet pipe head in a one-way mode; the pressure on-off valve is arranged in the first connector head and is used for switching on and off a second port of the first connecting flow channel according to the water pressure at the first connector head; the connecting pipe is connected between the first connecting pipe head and the second connecting pipe head;

wherein, first water outlet pipe head with main inlet tube, the second water inlet pipe head with main outlet pipe connects.

2. The electric water heater having a function of preventing water leakage of claim 1, wherein the pressure on-off valve includes a spring and a flexible sealing member, the flexible sealing member is disposed in the first connector head and is used for opening and closing the second port of the first connection flow path, and the spring is disposed in the first connector head and is used for applying an elastic force to the flexible sealing member in a direction toward the second port of the first connection flow path.

3. The electric water heater with the leakage-proof function as claimed in claim 2, wherein the flexible sealing member is formed with a sealing portion, an elastic deformation portion and an installation fixing portion, the elastic deformation portion is connected between the sealing portion and the installation fixing portion, the sealing portion is disposed opposite to the second port of the first connection flow passage, and the installation fixing portion is disposed on an inner wall of the first connector head.

4. The electric water heater having a leakage preventing function of claim 3, wherein the pressure on-off valve further comprises a mounting support provided in the first connector fitting, the spring is provided between the mounting support and the sealing portion, and the spring is used to apply an elastic force to the sealing portion in both directions toward the port of the first connection flow passage.

5. The electric water heater with the water leakage preventing function according to claim 1, wherein a first auxiliary joint is arranged on the first water pipe, a first partition plate is arranged in the first auxiliary joint, a first water inlet and a first water outlet are arranged on the first partition plate, and a second port of the first connecting flow passage, the first water inlet, the first water outlet and the first water outlet pipe head are sequentially connected; the first auxiliary joint is provided with a first switch valve, and the first switch valve is arranged opposite to the first partition plate and is used for switching the first water inlet and/or the first water outlet.

6. The electric water heater with the water leakage preventing function according to claim 1, wherein a second connecting flow passage is further disposed in the second water pipe, a first port of the second connecting flow passage is communicated with the second water inlet pipe head, and a second port of the second connecting flow passage is respectively communicated with the second connecting pipe head and the second water outlet pipe head; a second auxiliary joint is arranged on the second water pipe, a second partition plate is arranged in the second auxiliary joint, a second water inlet and a second water outlet are arranged on the first partition plate, a second port of the second connecting flow passage is the second water inlet, and the second water outlet is respectively communicated with the second water outlet pipe head and the second connecting pipe head; and a second switch valve is arranged in the second auxiliary joint and is opposite to the second partition plate and used for switching the second water inlet and/or the second water outlet.

7. The electric water heater with the water leakage preventing function according to any one of claims 1 to 6, further comprising two sets of heating elements, each set being fixed to a corresponding flange of the inner container and extending into the inner container;

wherein the heating member set includes a first heating member and a second heating member; the first heating part is arranged along the axial direction of the inner container, and the second heating part is attached to the side wall of the inner container.

8. The electric water heater with the water leakage prevention function according to claim 7, wherein the second heating member comprises a fixing portion, a bending portion and an extending portion, the fixing portion, the bending portion and the extending portion are sequentially connected, the fixing portion and the first heating member are arranged side by side, the bending portion extends towards the side wall direction of the inner container, and the extending portion extends along the axial direction of the inner container and is close to the side wall of the inner container.

9. The electric water heater with the water leakage preventing function according to claim 7, wherein the inner container comprises a first inner container and a second inner container; the first heating part comprises a first heating pipe and a third heating pipe; the second heating part comprises a second heating pipe and a fourth heating pipe; wherein the first heating pipe and the second heating pipe are positioned in the first inner container; the third heating pipe and the fourth heating pipe are positioned in the second inner container.

10. The electric water heater with the water leakage prevention function according to claim 9, wherein when the inner container is vertically installed, the first heating pipe and the third heating pipe are in an open state; the second heating pipe and the fourth heating pipe are in a closed state;

when the inner container is horizontally installed, the second heating pipe and the fourth heating pipe are in an open state; the first heating pipe and the third heating pipe are in a closed state.

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