CN107560160B

CN107560160B - Electric water heater

Info

Publication number: CN107560160B
Application number: CN201710914447.3A
Authority: CN
Inventors: 朱泽春; 徐嘉悦; 林毅
Original assignee: Joyoung Co Ltd
Current assignee: Shandong Jiuchuang Home Appliance Co ltd
Priority date: 2017-09-30
Filing date: 2017-09-30
Publication date: 2020-11-24
Anticipated expiration: 2037-09-30
Also published as: CN107560160A

Abstract

The application provides an electric water heater, the electric water heater includes the inner bag, there are inlet openings to mount inlet pipe and apopore to mount outlet pipe separately on the said inner bag, the bottom of the said inner bag also has diversion holes, the said electric water heater also includes the honeycomb duct installed on said diversion hole, the upper end of the said honeycomb duct has openings; the side wall of the flow guide pipe is provided with a through water outlet which is close to the flow guide hole of the inner container, and the opening and the water outlet have a height difference; the diversion hole is also provided with a diversion valve for controlling the opening and closing of the water discharge port, a diversion channel for conducting water in the liner out of the liner is arranged in the diversion valve, the diversion valve controls the opening of the water discharge port to be communicated with the diversion channel, or the diversion valve controls the closing of the water discharge port to cut off the communication between the water discharge port and the diversion channel. The capacity of the inner container of the electric water heater can be switched between the whole inner container and the half inner container.

Description

Electric water heater

Technical Field

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

Background

The existing electric water heater realizes the switching of the heating functions of the whole liner and the half liner by changing the heating position. Generally, the electric water heater comprises a heating pipe which is submerged below the inner container and a heating pipe in the middle of the inner container, when the heating function of the whole inner container is needed, the heating pipe below is heated simultaneously, and when the heating function of a half inner container is needed, only the heating pipe in the middle is heated. Because water is a poor heat conductor, when the heating pipe positioned in the center of the inner container is heated, water below the heating pipe cannot be heated, and only the upper half part of water is hot, so that the heating time is reduced and the energy is saved under the condition that the hot water is enough.

However, the existing electric water heater has the following disadvantages:

1. when the half-liner heating function is used, the liner needs to be filled with water, and the water temperature can be transferred to the lower part of the heating pipe in the heat preservation process, so that energy waste is caused;

2. the heating pipe has a complex structure and needs to be submerged below the inner container and at the middle part of the inner container;

therefore, the conventional half-bladder heating is not a true half-bladder heating, but a zone heating method in a full-bladder water state.

Disclosure of Invention

The invention provides an electric water heater which has the functions of integral liner heating and half liner heating at the same time, and has high energy efficiency and simple heating pipe structure when the half liner is heated.

In order to solve the technical problems, the invention adopts the following technical scheme:

the invention provides an electric water heater, which comprises an inner container, wherein the inner container is provided with a water inlet hole for mounting a water inlet pipe and a water outlet hole for mounting a water outlet pipe respectively; the side wall of the flow guide pipe is provided with a through water outlet which is close to the flow guide hole of the inner container, and the opening and the water outlet have a height difference; the diversion hole is also provided with a diversion valve for controlling the opening and closing of the water discharge port, a diversion channel for conducting water in the liner out of the liner is arranged in the diversion valve, the diversion valve controls the opening of the water discharge port to be communicated with the diversion channel, or the diversion valve controls the closing of the water discharge port to cut off the communication between the water discharge port and the diversion channel.

In the electric water heater provided by the application, the flow guide pipe is used for determining the water level in the inner container when the half container is heated, namely when the electric water heater uses the heating function of the half container, the water outlet is closed, water in the inner container enters the flow guide channel from the opening at the upper part of the flow guide pipe and is discharged outside the inner container until the water level in the inner container is flush with the opening, and at the moment, the water in the inner container cannot continuously flow out of the flow guide pipe, and then the heating element heats the water in the inner container; when the electric water heater has the function of heating the whole liner, the flow guide channel is closed, water in the liner cannot flow out of the flow guide channel, in the process that the half liner is changed into the whole liner, upper air can be discharged from the water outlet pipe, and the heating element heats the water in the whole liner; when the inner container needs to be completely drained, the flow guide channel is communicated, and water enters the flow guide channel from the opening of the flow guide pipe and the flow guide hole and is discharged to the outside of the inner container until the water in the inner container is completely drained.

The existing electric water heater usually has a water outlet and a diversion valve, so as to drain water in the inner container or clean the inner container and discharge cleaned sewage from the water outlet and the diversion valve. In this application, utilize the guiding valve to control the break-make of outlet, and the water level height in the control inner bag to realize half courage water heating's of reality function. The flow guide pipe is arranged, so that the water level in the inner container is determined when the half container is heated, the water quantity in the inner container is reduced when the half container is heated, the energy loss during heat preservation is reduced, and the energy efficiency of the electric water heater is high.

Optionally, the diversion valve includes a water discharge hole, a blocking piece and a hollow diversion channel, the water discharge hole and the blocking piece are matched with the water discharge opening in an alternative mode, so that the water discharge hole and the water discharge opening are overlapped to conduct the water discharge opening, or the blocking piece blocks the water discharge opening to close the water discharge opening.

According to the diversion valve, when the diversion valve integrally rotates or moves relative to the inner container, the water outlet on the diversion pipe can be communicated with the water outlet hole, and then the control of discharged water can be realized by controlling the on-off of the diversion valve; when the diversion valve rotates or moves integrally relative to the inner container, the diversion valve can seal or open the water outlet on the diversion pipe.

Optionally, the electric water heater is provided with a magnesium rod, the diversion valve is provided with a top surface, and one end of the magnesium rod extends into the diversion pipe and is mounted on the top surface of the diversion valve.

One end of the magnesium rod extends into the diversion channel and is arranged on the top surface of the diversion valve, so that the magnesium rod and the diversion valve can be detached from the diversion hole together, and the diversion pipe does not need to be detached, thereby facilitating the replacement of the magnesium rod and the maintenance of the diversion valve.

Optionally, a joint nut is further disposed on the diversion valve, and connects the diversion valve with the inner container, so that the diversion valve can rotate or move relative to the inner container to open or close the water outlet.

In this application, the diverter valve passes through coupling nut and is connected with the inner bag to realize diverter valve fixed connection on the inner bag, and can satisfy the function that the diverter valve opened, closed the water outlet in the relative activity of inner bag.

Optionally, a ball valve for opening or closing the diversion channel is further arranged at the downstream end of the diversion channel.

The ball valve can open, close the water conservancy diversion passageway in this application to water in the control inner bag by the water conservancy diversion passageway flows out, under the condition that the water conservancy diversion passageway was opened to the ball valve, when the delivery port intercommunication water conservancy diversion passageway that drains, can make the water in the inner bag discharge completely, when the delivery valve cut off delivery port and water conservancy diversion passageway intercommunication, water in the inner bag was discharged by the opening, and the inner bag water level keeps in the opening height after discharging to realize half courage water state.

Optionally, the draft tube has a top surface, and the opening of the draft tube is arranged at the upper end of the top surface and/or the side wall.

The opening of honeycomb duct controls the height that the inner bag discharged the water level in this application, therefore the opening position is higher than the mouth that drains, consequently, can design for seting up on the top surface or seting up in the lateral wall upper end of honeycomb duct, can set up simultaneously on top surface in the lateral wall, and open-ended lowest position is half courage heating water level limit position.

Optionally, the electric water heater is provided with a magnesium rod, the magnesium rod is mounted on the top surface of the flow guide pipe and located in the flow guide pipe, and a magnesium rod mounting hole is formed in the top surface of the flow guide pipe.

The magnesium rod is installed in the top surface of honeycomb duct, just the magnesium rod is located in the honeycomb duct, guarantees that the magnesium rod is located the page below all the time, guarantees magnesium rod ion separation effect, and magnesium rod and blast valve separation reduce the blast valve atress, the fit clearance in sealed water conservancy diversion hole of guarantee.

Optionally, the diversion valve rotates in the axial direction to open or close the water outlet, and the inner wall of the diversion pipe is provided with a limiting rib for limiting the rotation of the diversion valve; or the diversion valve moves up and down along the axial direction to conduct or close the water outlet, and the outer wall of the diversion pipe is provided with a limiting part which limits the up-and-down movement of the diversion valve.

The diversion valve opens and closes the water outlet in a rotating or up-and-down moving mode, so that the movement distance of the diversion valve is smaller, and the movable sealing effect of the diversion valve and the water outlet is ensured.

Optionally, the distance between the opening of the flow guide pipe and the flow guide hole is 1/4-3/4 of the height of the inner container.

In this application, the opening control inner bag on the honeycomb duct discharges the water level, therefore the distance of opening distance water conservancy diversion hole is promptly for discharging the back, and inner bag surplus water level height corresponds half courage heating water level state of this application promptly, will be 1/4 ~ 3/4 for the distance is inner bag height for water capacity in the inner bag reduces, and the temperature intensifies faster, and calorific loss reduces, and electric water heater's efficiency is higher.

Optionally, the electric water heater is provided with a heating element, the heating element is installed in the inner container, and a heating section of the heating element is not higher than the opening.

The heating section of the heating element is not higher than the opening of the flow guide pipe, so that when the half liner is heated, the water level in the liner is flush with the upper end of the heating section or higher than the heating section, and the heating element is prevented from being burnt during heating of the half liner.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.

Fig. 1 is a schematic cross-sectional structural diagram of an electric water heater according to a first embodiment of the present invention;

FIG. 2 is an enlarged view of section A of FIG. 1, with the diverter valve in an open position and the ball valve in a closed position;

FIG. 3 is an enlarged view of section A of FIG. 1, with the diverter valve in an open position and the ball valve in an open position;

fig. 4 is a schematic cross-sectional structural diagram of an electric water heater according to a first embodiment of the present invention, wherein a diversion valve is in a closed state;

FIG. 5 is an enlarged view of section B of FIG. 4, with the diverter valve in the closed position and the ball valve in the open position;

FIG. 6 is an enlarged view of section B of FIG. 4, with the diverter valve in the closed position and the ball valve in the closed position;

FIG. 7 is a cross-sectional view taken at C-C of FIG. 4;

FIG. 8 is an enlarged view of section D of FIG. 7, with the diverter valve in the closed position and the ball valve in the open position;

FIG. 9 is a schematic view of a diverter valve;

FIG. 10 is a cross-sectional view of the diverter valve of FIG. 9;

FIG. 11 is a schematic structural diagram of the heating pipe of FIG. 1;

fig. 12 is a schematic cross-sectional structural view of an electric water heater according to a second embodiment of the present invention.

Wherein the relationship between the reference numbers and the names of the components is:

1 inner bag, 2 water conservancy diversion holes, 3 inlet openings, 4 apopores, 5 honeycomb ducts, 51 openings, 52 water discharge ports, 6 heating elements, 61 oblique sections, 62 dive sections, 63 temperature measuring tubes, 64 temperature limiting tubes, 65 marked lines, 7 water discharge valves, 71 valve covers, 711 water discharge holes, 712 magnesium rod fixing holes, 713 blocking pieces, 714 water conservancy diversion channels, 72 valve seats, 73 ball valves, 74 handles, 75 sealing rings, 76 joint nuts, 8 magnesium rods.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.

The first embodiment is as follows:

as shown in fig. 1, an embodiment of the present invention provides an electric water heater, which has a whole-liner heating function and a half-liner heating function, and the electric water heater includes a liner 1, a heating element 6 located in the liner 1, a water inlet 3, and a water outlet 4.

Further, the electric water heater also comprises a flow guide hole 2 arranged at the bottom of the liner 1, the electric water heater also comprises a flow guide pipe 5 arranged on the flow guide hole 2, and the upper end of the flow guide pipe 5 is provided with an opening 51; the side wall of the draft tube 5 is provided with a through water outlet 52, the water outlet 52 is close to the flow guide hole 2 of the liner, and the opening 51 and the water outlet 52 have a height difference; the diversion hole 2 is further provided with a diversion valve 7 for controlling the opening and closing of the water outlet 52, a diversion channel 714 for conducting water in the liner 1 to the outside of the liner 1 is arranged in the diversion valve 7, the diversion valve 7 controls the opening of the water outlet 52 to communicate with the diversion channel 714, or the diversion valve 7 controls the closing of the water outlet 52 to cut off the communication between the water outlet 52 and the diversion channel 714.

A flow guide hole 2 is formed in an inner container 1, the lower end of a flow guide pipe 5 is communicated with the flow guide hole 2, the height of an opening 51 at the upper end of the flow guide pipe 5 is set to be used for determining the water level in the inner container 1 when a half container is heated, namely when the electric water heater uses a half container heating function, a water outlet 52 is closed, water in the inner container enters a flow guide channel 714 from the opening 51 at the upper part of the flow guide pipe 5 and is discharged to the outside of the inner container until the water level in the inner container is flush with the opening 51, at the moment, the water in the inner container cannot continuously flow out of the flow guide pipe 5, and then a heating element heats the water in; when the electric water heater has the function of heating the whole liner, the flow guide channel 714 is closed, water in the liner cannot flow out of the flow guide channel 714, and the heating element heats the water in the liner; when the inner container needs to completely discharge water, the guide channel 714 is conducted, and water enters the guide channel 714 from the opening 51 and the water discharge port 52 of the guide pipe 5 and is discharged to the outside of the inner container until the water in the inner container is completely discharged. In this embodiment, the opening 51 is an opening at the top of the flow guide tube 5, and the opening 51 of the present invention is always communicated with the flow guide channel 714.

The conventional electric water heater generally has a water outlet 52 and a diversion valve 7 so as to drain water in the inner container 1 or clean the inner container 1 and discharge cleaned sewage from the water outlet 52 and the diversion valve 7. In this embodiment, the existing diversion valve 7 is used to control the on-off of the diversion pipe 5 and the water level in the inner container, so as to realize the half-container heating function. The electric water heater of the embodiment is provided with the flow guide pipe 5, so that the water level in the inner container 1 is determined when the half container is heated, the water quantity in the inner container 1 is reduced when the half container is heated, the energy loss during heat preservation is reduced, and the energy efficiency of the electric water heater is high.

For this purpose, as shown in fig. 3 and 4, the diversion hole 2 is formed in the bottom wall of the liner 1, the lower portion of the sidewall of the diversion pipe 5 is provided with a water outlet 52, and the upper end of the diversion valve 7 passes through the diversion hole 2 and then extends into the diversion pipe 5. Further, the diversion valve 7 is movably connected with the liner 1 to communicate the water outlet 52 with the diversion valve 7 or close the water outlet 52 by the diversion valve 7.

Specifically, the upper end of the diversion valve 7 extends into the diversion pipe 5, so that the water discharged from the diversion pipe 5 can be controlled by controlling the on-off of the diversion valve 7, and the function of really heating the half-bladder water is realized. In addition, a water outlet 52 is arranged at the lower part of the side wall of the draft tube 5, when the liner 1 is not needed to be washed, the draft valve 7 can move (such as rotate or move) in the draft tube 5 to close the water outlet 52 (such as the state shown in fig. 6); when the liner 1 needs to be flushed, the diversion valve 7 moves in the diversion pipe 5 to open the water outlet 52 (as shown in fig. 2), and then open the ball valve 73 (as shown in fig. 3), so that the liner can be completely drained. The diversion valve 7 realizes the function of water drainage and the function of controlling the on-off of the diversion pipe 5 so as to control the water level of the half liner during heating.

As shown in fig. 9 and 10, the diversion valve 7 includes: a bonnet 71 and a union nut 76. The valve cover 71 is provided with a water discharge hole 711, a blocking piece 713 and a hollow flow guide channel 714, the water discharge hole 711 and the blocking piece 713 are matched with the water discharge opening 52 in an alternative mode, so that the water discharge hole 711 is overlapped with the water discharge opening 52 to conduct the water discharge opening 52, or the blocking piece 713 shields the water discharge opening 52 to close the water discharge opening 52.

The electric water heater is provided with a magnesium rod 8, the diversion valve 7 is provided with a top surface, and one end of the magnesium rod 8 extends into the diversion pipe 5 and is arranged on the top surface of the diversion valve 7. The top surface of the valve cover 71 is provided with a magnesium rod 8 fixing hole 712, and the magnesium rod 8 is mounted on the magnesium rod 8 fixing hole 712. In this embodiment, the opening of the bottom end of the magnesium rod 8 extending into the top of the draft tube 5 is mounted on the draft valve 7.

The diversion valve is further provided with a joint nut 76, the diversion valve 7 is connected with the inner container 1 through the joint nut 76, and the diversion valve 7 can rotate or move relative to the inner container so as to conduct or close the water outlet 52. In this embodiment, the diversion valve 7 rotates in the axial direction to open or close the water outlet 52. In the present invention, the diversion valve 7 is further provided with a valve seat 72, the valve cover 71 is integrally formed with the valve seat 72, and the diversion passages 714 inside the valve cover 71 and the valve seat 72 are through-type, so that the diversion valve 7 is driven to integrally rotate by operating the valve seat 72.

The downstream end of the diversion passage 714 is also provided with a ball valve 73 for opening or closing the diversion passage 714. The ball valve 73 is provided with a communicating channel, the ball valve 73 is arranged at the lower part of the valve cover 71 and is positioned outside the inner container, the ball valve 73 is convenient for a user to open and close, the handle 74 is connected with the ball valve 73 and drives the ball valve 73 to rotate, the handle 74 is positioned outside the body of the electric water heater, and the ball valve 73 is rotated by adjusting the handle 74.

In the diversion valve 7 in this embodiment, the valve cover 71 is connected with the liner 1 through the joint nut 76, so that the diversion valve 7 is integrally installed on the liner 1; the lower part of the diversion valve 7 is provided with a ball valve 73, the ball valve 73 can be driven by the handle 74 to rotate so as to seal or communicate the diversion channel 714, so as to control the on-off of the diversion valve 7; the side wall of the diversion valve 7 is provided with a water discharge hole 711 and a baffle 713, when the diversion valve 7 integrally rotates relative to the liner 1, the water discharge hole 52 on the diversion pipe 5 can be communicated with the water discharge hole 711, and then the control of water discharge can be realized by controlling the on-off of the diversion valve 7; when the diversion valve 7 rotates integrally relative to the inner container 1, the blocking piece 713 can seal the water outlet 52 on the diversion pipe 5, and then the water discharging process under the heating of the half container can be completed by controlling the on-off of the diversion channel 714.

In order to limit the rotation angle of the diversion valve 7 so as to communicate the water outlet 52 with the water outlet hole 711 or seal the water outlet 52 with the blocking plate 713, a limiting rib 13 may be disposed on the inner wall of the diversion pipe 5, as shown in fig. 3, the limiting rib 13 is used to limit the rotation angle of the diversion valve 7 and determine the final position of the diversion valve 7 in two states.

Furthermore, the height of the inner container is H, and the distance H between the opening 51 of the draft tube 7 and the draft hole 2 is 1/4H-3/4H. The invention designs the half-liner heating function of the electric water heater, namely the heating and using states under the condition that the water in the liner is not completely filled with the liner, and for the liquid level height of the half-liner heating, when the liquid level is lower, the heating speed is high, the heat energy loss is less, but the sustainable using time of the hot water is short, namely the output quantity of the hot water is reduced; when the liquid level is high, the hot water output can be ensured, but the using effect of the liquid half liner is not obvious, in the invention, the height of the liner of 1/4-3/4 is designed to be used as the water level height for heating the half liner, and the consideration of various factors such as the hot water output, the heating speed and the heat energy loss is considered. In this embodiment, the distance H between the opening 51 and the diversion hole 2 is 1/3H.

Furthermore, the electric water heater is provided with a heating element 6, the heating element 6 is positioned in the liner 1, and the heating section of the heating element 6 is not higher than the opening 51. The heating section of the heating element is not higher than the opening 51 of the draft tube 5, so that when the half liner is heated, the water level in the liner 1 is flush with the upper end of the heating section or higher than the heating section, and the heating element is ensured not to be dried when the half liner is heated. Because the heating section that sets up heating element is not higher than honeycomb duct 5 for no matter when whole courage heating or when half courage heating, heating element all can heat the water in inner bag 1, has simplified heating element's structure.

The electric water heater of the present embodiment is specifically described below with reference to the accompanying drawings.

As shown in fig. 1, the diversion hole 2, the water inlet hole 3, the water outlet hole 4, the heating element 6 and the diversion valve 7 are fixed on the inner container 1.

The concrete structure of each part is as follows:

(1) and (4) a flow guide pipe 5:

which is used for discharging water and controlling the water level of the inner container 1 when the heating function of the whole inner container is switched to the heating function of the half inner container. The draft tube 5 is provided with an opening 51, a water outlet 52 and a limiting rib 13, and the opening 51 is used for limiting the water level of the half liner; the water discharge ports 52 are used for discharging dirt in the liner 1, and one water discharge port 52 is arranged on each of two sides of the guide pipe 5; the opening 51 is always communicated with a diversion channel 714 of the diversion valve 7; the limiting rib 13 is used for limiting the rotation angle of the diversion valve 7 and determining the final position in two states.

(2) A diversion valve 7:

it includes: a valve cover 71, a valve seat 72, a ball valve 73, a handle 74, a sealing ring 75 and a joint nut 76;

the valve cover 71 includes: a water discharging hole 711, a magnesium rod 8, a fixing hole 712, a baffle 713 and a flow guide channel 714.

After the diversion valve 7 is fixed on the liner 1, when the diversion valve 7 needs to rotate, the valve seat 72 is held to rotate, and other parts on the diversion valve 7 rotate synchronously with the valve seat 72 except that the joint nut 76 and the liner 1 are fixed and do not rotate.

(3) Heating element 6:

as shown in fig. 11, it includes a heating tube, a temperature measuring tube 63 and a temperature limiting tube 64.

The heating tube comprises an inclined section 61 and a submerged section 62. The direction of the inclined section 61 is obliquely downward, a marking line 65 is arranged on the inclined section 61, the marking line 65 is a connecting point of a heating pipe leading-out rod and a heating wire, the heating wire is not arranged in the pipe on the right side of the marking line 65, the part on the left side of the marking line 65 is a heating section of a heating element, the position of the marking line 65 is not higher than the height of the opening 51, and when a half-container is heated, the dry burning phenomenon of the heating pipe can not occur; the submergence section 62 is close to the bottom of the inner container, so that water at the bottom of the inner container 1 can be fully heated, and the output rate of hot water is improved; the temperature measuring tube 63 is used for placing a temperature sensing probe of a temperature controller, the temperature limiting tube 64 is used for placing a temperature sensing probe of a temperature limiter, the top of the temperature limiting tube is lower than the marked line 65, and the water temperature of the inner container can be detected when the half inner container is heated.

The electric water heater of the present embodiment operates as follows.

When the whole liner heating function is used, the ball valve 73 is in a state of closing the diversion channel 714, and whether the baffle 713 of the diversion valve 7 seals the water outlet 52 of the diversion pipe 5 does not affect the whole liner heating function, but in the embodiment, the water outlet hole 711 and the water outlet 52 are overlapped under the whole liner heating function, as shown in fig. 1 and fig. 2.

When the half-liner function is used, the blocking piece 713 seals the water outlet 52 at the moment, and water in the liner 1 can only flow out from the top of the draft tube 5; the ball valve 73 is rotated to conduct the flow guide channel 714, water enters from the top of the flow guide pipe 5, flows out of the flow guide channel 714 through a gap between the side wall of the flow guide pipe 5 and the water discharge hole 711, the inner container automatically stops water discharge when the water level line is flush with the top opening 51 of the flow guide pipe 5, and the flow guide pipe 5 aims at controlling the water discharge level; after the water in the inner container 1 is discharged to the level of the opening 51, the ball valve 73 is rotated to close the diversion channel 714, as shown in fig. 4-8, wherein the state of fig. 4, 5, 7, 8 (the direction shown by the arrow is the water flowing direction) is the water discharging process of changing the whole container water into half container water, and fig. 6 is the half container heating state of closing the ball valve 73 after the water discharging is finished, the water level of the inner container is kept in the half container state.

When the water heater needs to discharge sewage, the diversion valve 7 is rotated to enable the water discharge hole 711 to be superposed with the water discharge port 52 and be in a conduction state; when the water level in the inner container is higher than the opening 51 of the diversion valve 7, part of the water also enters the diversion channel 714 from the opening 51 through the gap between the side wall of the diversion pipe 5 and the water discharge hole 711 and is discharged out of the inner container, and when the water level in the inner container is lower than the opening 51 of the diversion valve 7, the water in the inner container 1 only enters the diversion channel 714 from the water discharge hole 52 and the water discharge hole 711 and is discharged out of the inner container.

Example two:

the present embodiment provides an electric water heater, which is different from the first embodiment in that: the installation mode of the magnesium rod 8.

Referring to fig. 12, the draft tube 5 of the present embodiment has a top surface, and the opening 51 of the draft tube is disposed at the upper end of the top surface and/or the sidewall. Electric water heater is equipped with magnesium stick 8, the magnesium stick install in the top surface of honeycomb duct, just magnesium stick 8 is located in honeycomb duct 5, be equipped with magnesium stick mounting hole on honeycomb duct 5's the top surface, under considering half courage water level circumstances, the magnesium stick also need produce the ion separation effect in liquid, in this embodiment, will magnesium stick 8 install in honeycomb duct 5's top surface, and be located in honeycomb duct 5, guarantee that magnesium stick 8 is located the page below all the time, guarantee 8 ion separation effects on magnesium stick, and magnesium stick 8 separates with diverter valve 7, reduces diverter valve 7 atress, ensures the fit clearance in sealed water conservancy diversion hole. In this embodiment, the distance between the opening and the diversion hole is set as 1/2 liner height.

Example three:

the present embodiment provides an electric water heater, which is different from the first embodiment in that: the diversion valve moves relative to the diversion pipe.

The electric water heater of the present embodiment operates as follows.

In this embodiment, the entire diversion valve 7 is moved up and down with respect to the diversion pipe 5, thereby controlling the opening and closing of the drain port 52 and the drain hole 711. The diversion valve 7 moves up and down along the axial direction to conduct or close the water outlet 52, and the outer wall of the diversion pipe 5 is provided with a limiting part which limits the up-and-down movement of the diversion valve 7.

When the container is used, the blocking piece 713 seals the water outlet 52 at the moment, the ball valve 73 is in the closed position, and the diversion channel 714 is in the closed state.

When the half-liner function is used, the blocking piece 713 seals the water outlet 52 at the moment, and water in the liner 1 can only enter the flow guide channel 714 from the opening 51 at the top of the flow guide pipe 5; the ball valve 73 is rotated to conduct the flow guide channel 714, water enters from the opening 51 at the top of the flow guide pipe 5, flows out of the flow guide channel 714 through a gap between the side wall of the flow guide pipe 5 and the water discharge hole 711, water discharge is stopped when the water level line is flush with the opening 51, and the purpose of the opening 51 of the flow guide pipe 5 is to control the water level of the discharged water; when the water heater needs to discharge sewage, the diversion valve 7 is pulled downwards until the diversion valve 7 is limited by the limiting part, so that the water discharge hole 711 is overlapped with the water discharge hole 52, and the diversion channel 714 is in a conduction state; the handle 74 is rotated to drive the ball valve 73 to rotate, so that the diversion valve 7 is in an open state, and water enters the diversion channel 714 from the inner container 1 through the water discharge port 52 and the water discharge hole 711 and is discharged out of the inner container 1.

Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. An electric water heater, which comprises an inner container, wherein the inner container is provided with a water inlet hole for installing a water inlet pipe and a water outlet hole for installing a water outlet pipe respectively,

the bottom of the inner container is also provided with a flow guide hole, the electric water heater also comprises a flow guide pipe arranged on the flow guide hole, and the upper end of the flow guide pipe is provided with an opening; the side wall of the flow guide pipe is provided with a through water outlet which is close to the flow guide hole of the inner container, and the opening and the water outlet have a height difference;

the diversion hole is also provided with a diversion valve for controlling the opening and closing of the water discharge port, a diversion channel for conducting water in the liner out of the liner is arranged in the diversion valve, the diversion valve controls the opening of the water discharge port to be communicated with the diversion channel, or the diversion valve controls the closing of the water discharge port to cut off the communication between the water discharge port and the diversion channel.

2. The electric water heater according to claim 1, wherein the diversion valve comprises a water discharge hole, a blocking piece and a hollow diversion channel, and the water discharge hole and the blocking piece are alternatively matched with the water discharge opening, so that the water discharge hole and the water discharge opening are overlapped to conduct the water discharge opening, or the blocking piece blocks the water discharge opening to close the water discharge opening.

3. The electric water heater of claim 2, wherein the electric water heater is provided with a magnesium rod, the diverter valve has a top surface, and one end of the magnesium rod extends into the diverter tube and is mounted on the top surface of the diverter valve.

4. The electric water heater according to claim 1, wherein the diversion valve is further provided with a joint nut, and the joint nut connects the diversion valve with the inner container and enables the diversion valve to rotate or move relative to the inner container so as to open or close the water outlet.

5. The electric water heater according to claim 4, wherein the downstream end of the diversion channel is further provided with a ball valve for opening or closing the diversion channel.

6. The electric water heater according to claim 1, wherein the flow tube has a top surface, and the opening of the flow tube is provided at the top surface and/or the upper end of the sidewall.

7. The electric water heater according to claim 6, wherein the electric water heater is provided with a magnesium rod, the magnesium rod is mounted on the top surface of the flow guide pipe, the magnesium rod is positioned in the flow guide pipe, and the top surface of the flow guide pipe is provided with a magnesium rod mounting hole.

8. The electric water heater according to any one of claims 1-7, wherein the diversion valve rotates along the axial direction to conduct or close the water outlet, and the inner wall of the diversion pipe is provided with a limiting rib for limiting the rotation of the diversion valve; or the diversion valve moves up and down along the axial direction to conduct or close the water outlet, and the outer wall of the diversion pipe is provided with a limiting part which limits the up-and-down movement of the diversion valve.

9. The electric water heater according to any one of claims 1-7, wherein the distance between the opening of the flow guide pipe and the flow guide hole is 1/4-3/4 of the height of the inner container.

10. The electric water heater according to claim 9, wherein the electric water heater is provided with a heating element, the heating element is arranged in the inner container, and a heating section of the heating element is not higher than the opening.