CN213630976U - Water tank for electric water heater and electric water heater - Google Patents
Water tank for electric water heater and electric water heater Download PDFInfo
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- CN213630976U CN213630976U CN202020969014.5U CN202020969014U CN213630976U CN 213630976 U CN213630976 U CN 213630976U CN 202020969014 U CN202020969014 U CN 202020969014U CN 213630976 U CN213630976 U CN 213630976U
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Abstract
The utility model discloses a water tank and electric water heater for electric water heater. The water tank for electric water heater includes: the box body is internally provided with a heating cavity; the water outlet pipe is communicated with the heating cavity and is used for outputting water in the heating cavity; the water inlet pipe comprises a first pipe body, a second pipe body and a third pipe body which are sequentially connected, the lower port of the first pipe body is a water inlet, the lower port of the third pipe body is a water outlet, the first pipe body and the second pipe body are longitudinally arranged, the second pipe body is transversely arranged, a switchable valve body is arranged on the second pipe body, and the valve body is used for being opened when water is deficient in the second pipe body; wherein, during first body seal inserted the heating cavity, and the water inlet was located the outside of box, and second body and third body all set up in the heating cavity. The utility model discloses the realization is avoided electric water heater to appear the condition emergence of dry combustion method to improve electric water heater's use reliability and security.
Description
Technical Field
The utility model belongs to the technical field of domestic appliance, especially, relate to a water tank and electric water heater for electric water heater.
Background
At present, an electric water heater is a household appliance commonly used in daily life of people, and a water tank of the electric water heater generally comprises a shell and an inner container, wherein a water inlet pipe, a water outlet pipe and an electric heating pipe are generally configured in the inner container. In actual use, the electric heating pipe is electrified to heat water in the water tank, and the water inlet pipe is used for introducing water in the tap water pipe into the water tank, so that hot water at the top of the water tank is output from the water outlet pipe.
In a water tank of a conventional electric water heater, when a water supply pipe network is disconnected, a water inlet pipe is influenced by negative pressure in the water supply pipe network, so that water in the water tank is easily sucked out reversely and flows into the water supply pipe network, and water of the electric water heater is returned. The water level in the water tank is reduced due to the influence of the backwater of the electric water heater, so that the dry burning condition is easy to occur, and the potential safety hazard is caused.
In view of this, how to design an electric water heater technology with high use reliability and safety is the technical problem to be solved by the utility model.
Disclosure of Invention
The utility model provides a water tank and electric water heater for electric water heater realizes avoiding electric water heater the condition emergence of dry combustion method to improve electric water heater's use reliability and security.
In order to achieve the technical purpose, the utility model adopts the following technical scheme:
in one aspect, the present invention provides a water tank for an electric water heater, comprising:
the heating device comprises a box body, a heating device and a control device, wherein a heating cavity is formed in the box body;
the water outlet pipe is communicated with the heating cavity and is used for outputting water in the heating cavity;
the water inlet pipe comprises a first pipe body, a second pipe body and a third pipe body which are sequentially connected, the lower port of the first pipe body is a water inlet, the lower port of the third pipe body is a water outlet, the first pipe body and the second pipe body are longitudinally arranged, the second pipe body is transversely arranged, a switchable valve body is arranged on the second pipe body, and the valve body is used for being opened when the second pipe body is lack of water;
the first pipe body is inserted into the heating cavity in a sealing mode, the water inlet is located outside the box body, and the second pipe body and the third pipe body are arranged in the heating cavity.
Furthermore, an installation opening is formed in the upper pipe wall of the second pipe body, the valve body is a blocking plate, and the blocking plate can move in the second pipe body and is used for opening and closing the installation opening.
Furthermore, one side of the plugging plate is rotatably arranged in the second pipe body.
Furthermore, a rotatable rotating shaft is arranged at a position, close to the first pipe body, in the second pipe body, and the plugging plate is arranged on the rotating shaft.
Furthermore, a return spring for driving the plugging plate to rotate so as to close the mounting hole is further arranged on the rotating shaft.
Further, the density of the plugging plate is less than that of water.
Furthermore, the valve body is a one-way valve, the one-way valve is arranged on the pipe wall of the second pipe body, a port of the one-way valve communicated with the second pipe body is an inlet, and a port of the one-way valve communicated with the heating cavity is an outlet.
Further, the outlet of the one-way valve is arranged upwards.
On the other hand, the utility model also provides an electric water heater, including water tank and electric heating part, the water tank adopts above-mentioned electric water heater to use the water tank, electric heating part sets up in the water tank.
Further, the height of the electric heating part is lower than that of the valve body.
Compared with the prior art, the utility model discloses an advantage is with positive effect: the water inlet pipe is arranged in the water tank to form a circuitous structure, the valve body is arranged at the top of the water inlet pipe, the second pipe body of the water inlet pipe is filled with water under the condition of normal water supply, at the moment, the valve body is in a closed state, and the water entering the water inlet pipe is input into the water tank from the water outlet at the lower part of the third pipe body; when the external water supply network stops water and water in the water tank flows back from the water inlet pipe, the second pipe body is transversely arranged and located at the top of the first pipe body and the top of the second pipe body, water in the second pipe body is reduced due to water backflow in the first pipe body, the valve body is opened when the second pipe body is in a water shortage state, most of water in the water tank is finally prevented from being pumped out due to siphon action, the water in the water tank can be kept in a safe water level state by utilizing the height position of the valve body, the situation that the electric water heater is burnt in a dry mode is avoided, and the use reliability and safety of the electric water heater are improved.
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 described 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 inventive labor.
FIG. 1 is a schematic structural view of an embodiment of a water tank for an electric water heater according to the present invention;
FIG. 2 is one of the cross-sectional views of the inlet tube of FIG. 1;
FIG. 3 is a second sectional view of the water tank for the electric water heater of FIG. 1;
fig. 4 is a schematic structural view of another embodiment of the water tank for an electric water heater of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying 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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to 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 merely 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.
First embodiment, as shown in fig. 1 to 3, the present embodiment provides a water tank for an electric water heater, including: box 1, outlet pipe 3 and inlet tube 2.
Wherein, form heating cavity in the box 1, then be used for the storage to take the water of heating in the heating cavity. Outlet pipe 3 intercommunication heating cavity is used for with water output in the heating cavity, then be used for with the hot water output at heating cavity top, outlet pipe 2 then can be connected through the water terminal (water-cooling head or gondola water faucet) of water pipe in with the user family, and hot water in the heating cavity exports via outlet pipe 2. The water inlet pipe 2 is used for delivering cold water into the heating chamber, and the water inlet pipe 2 is usually connected with a water supply pipe in the home of the user. When the user uses hot water, cold water in the water supply pipe enters the heating cavity through the water inlet pipe 2.
Wherein, in case of water supply interruption, the water level in the tank 1 is lowered to reduce or avoid the water backflow of the water inlet pipe 2. The water inlet pipe 2 comprises a first pipe body 21, a second pipe body 22 and a third pipe body 23 which are connected in sequence, the lower port of the first pipe body is a water inlet 201, the lower port of the third pipe body 23 is a water outlet 202, the first pipe body 21 and the second pipe body 22 are both longitudinally arranged, the second pipe body 22 is transversely arranged, a switchable valve body 24 is arranged on the second pipe body 22, and the valve body is used for being opened when the second pipe body 22 is lack of water; wherein, the first pipe 21 is inserted into the heating chamber in a sealing manner, the water inlet 201 is located outside the box body 1, and the second pipe 22 and the third pipe 23 are both disposed in the heating chamber.
Specifically, in the actual use process, under the condition that the water pressure in the water supply pipe of the user's home is normal, as shown in fig. 2, the water inlet pipe 2 is filled with water, and at this time, the valve body is in a closed state. And, when the user uses water, the water in the water supply pipe enters the housing 1 through the first pipe 21, the second pipe 22 and the third pipe 23 in sequence.
When the water supply pipe in the home of the user is in a water-cut state, as shown in fig. 3, the water in the water inlet pipe 2 flows back, and at this time, the water in the first pipe 21 flows back into the water supply pipe, and the water level in the second pipe 22 is lowered. Due to the water level of the second pipe 22 being lowered, the valve body is opened, and at this time, part of the water at the top of the tank 1 will flow back through the valve body and the first pipe 21. However, since the second pipe 22 is located on top of the first pipe 21 and the third pipe 23, the liquid level in the tank 1 can be controlled by the valve, so that the liquid level in the tank 1 is maintained at a predetermined height to avoid dry burning.
After the water is cut off, after part of the water in the tank body 1 is sucked out due to the siphon action, when the liquid level in the tank body 1 is lower than the valve body, the first pipe body 21 cannot pump water from the third pipe body 23 through the second pipe body 22 due to the fact that the valve body is in an open state, and therefore the water in the tank body 1 cannot be sucked out continuously.
In some embodiments, the mounting opening 221 is formed on the upper wall of the second tube 22, and the valve body is a blocking plate movable in the second tube 22 and used for opening and closing the mounting opening 221. Specifically, the top of the pipe wall of the second pipe 22 may be provided with the mounting opening 221, and the second pipe 22 is provided with the blocking plate, so that the mounting opening 221 is opened and closed by the blocking plate, and the function of the valve body is realized. The density of the blocking plate is less than that of water, so that the installation opening 221 can be effectively closed by using the buoyancy of the blocking plate in a state that the second pipe 22 has water.
In some embodiments, one side of the blocking plate is rotatably installed in the second pipe 22, and when the water is normally supplied, the blocking plate closes the installation opening 221, and when the water is cut off, the blocking plate is pushed open by the water pressure outside the second pipe 22 due to the water level in the second pipe 22 being lowered, and the blocking plate rotates to open the installation opening 221.
In some embodiments, a rotatable shaft 241 is disposed in the second tube 22 near the first tube 21, and the blocking plate is disposed on the shaft 241. Specifically, by arranging the rotating shaft 241 at a side close to the first pipe 21, when water is normally supplied, the water flow enables the plugging plate to be tightly attached to the inner pipe wall of the second pipe 22, so as to effectively close the mounting port 221 in time, thereby reducing the amount of cold water flowing into the top area of the box 1, and being more beneficial to improving the hot water output rate.
In other embodiments, a return spring (not shown) for driving the blocking plate to rotate to close the mounting opening 221 is further disposed on the rotating shaft. Through setting up reset spring to provide certain restoring force for the shutoff board through reset spring, with the pipe wall installing port 221 that satisfies under normal water supply state, the shutoff board can be good. The spring force of the return spring should not be too large, so that the water body higher than the second pipe body 22 in the box body 1 can drive the plugging plate to overturn downwards when water is cut off, and the elastic force of the return spring is not limited.
Similarly, in order to realize the function of the valve body, a one-way valve can be directly adopted as the valve body in one embodiment. The check valve is arranged on the pipe wall of the second pipe body 22, the port of the check valve communicated with the second pipe body 22 is an inlet, and the port of the check valve communicated with the heating cavity is an outlet. Specifically, when the water inlet pipe 2 has a siphon phenomenon, the check valve is opened at the moment, so that water in the tank 1, which is higher than the check valve, enters the water inlet pipe 2 through the check valve; and the water level at the top of the box body 1 is reduced to the position below the one-way valve, and the one-way valve is still in an open state, so that the water inlet pipe 2 is prevented from absorbing water through the third pipe body 23. After normal water supply, the one-way valve is automatically closed under the action of the water pressure in the water inlet pipe 2. The specific structural form of the check valve can refer to a valve having the above-mentioned check function in the conventional art, and is not limited and described herein. And the outlet of the check valve is disposed upward so that a higher water level is maintained in the tank 1.
In another aspect, as shown in fig. 4, the present invention further provides an electric water heater, which includes a water tank 100 and an electric heating component 200, wherein the water tank 100 adopts the above water tank for an electric water heater, and the electric heating component 200 is disposed in the water tank 100.
Specifically, the electric heating part 200 can heat water in the water tank 100, and in order to more effectively prevent dry burning, the height of the electric heating part 200 is lower than that of the valve body. Thus, the electric heating part 200 can be still soaked in the water tank 100 under the condition that the water level of the water tank 100 is reduced to the minimum after the water is cut off, so that the use safety and reliability are improved.
Compared with the prior art, the utility model discloses an advantage is with positive effect: the water inlet pipe is arranged in the water tank to form a circuitous structure, the valve body is arranged at the top of the water inlet pipe, the second pipe body of the water inlet pipe is filled with water under the condition of normal water supply, at the moment, the valve body is in a closed state, and the water entering the water inlet pipe is input into the water tank from the water outlet at the lower part of the third pipe body; when the external water supply network stops water and water in the water tank flows back from the water inlet pipe, the second pipe body is transversely arranged and located at the top of the first pipe body and the top of the second pipe body, water in the second pipe body is reduced due to water backflow in the first pipe body, the valve body is opened when the second pipe body is in a water shortage state, most of water in the water tank is finally prevented from being pumped out due to siphon action, the water in the water tank can be kept in a safe water level state by utilizing the height position of the valve body, the situation that the electric water heater is burnt in a dry mode is avoided, and the use reliability and safety of the electric water heater are improved.
The above embodiments are only used to illustrate the technical solution of the present invention, and 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 modifications may be made to the embodiments described in the foregoing embodiments, or that equivalents may be substituted for elements thereof; such modifications and substitutions do not depart from the spirit and scope of the present invention, which is claimed.
Claims (10)
1. A water tank for an electric water heater, comprising:
the heating device comprises a box body, a heating device and a control device, wherein a heating cavity is formed in the box body;
the water outlet pipe is communicated with the heating cavity and is used for outputting water in the heating cavity;
the water inlet pipe comprises a first pipe body, a second pipe body and a third pipe body which are sequentially connected, the lower port of the first pipe body is a water inlet, the lower port of the third pipe body is a water outlet, the first pipe body and the second pipe body are longitudinally arranged, the second pipe body is transversely arranged, a switchable valve body is arranged on the second pipe body, and the valve body is used for being opened when the second pipe body is lack of water;
the first pipe body is inserted into the heating cavity in a sealing mode, the water inlet is located outside the box body, and the second pipe body and the third pipe body are arranged in the heating cavity.
2. The water tank for an electric water heater as claimed in claim 1, wherein the upper wall of the second pipe body is provided with a mounting opening, and the valve body is a closing plate which is movable in the second pipe body and is used for opening and closing the mounting opening.
3. The water tank for an electric water heater as claimed in claim 2, wherein one side of the closure plate is rotatably installed in the second pipe body.
4. The water tank for the electric water heater as claimed in claim 3, wherein a rotatable shaft is provided in the second pipe body at a position adjacent to the first pipe body, and the blocking plate is provided on the rotatable shaft.
5. The water tank for the electric water heater according to claim 4, wherein a return spring for driving the blocking plate to rotate to close the mounting opening is further provided on the rotating shaft.
6. The water tank for an electric water heater as claimed in claim 2, wherein the density of the blocking plate is less than that of water.
7. The water tank for the electric water heater according to claim 1, wherein the valve body is a one-way valve, the one-way valve is disposed on the pipe wall of the second pipe body, a port of the one-way valve communicating with the second pipe body is an inlet, and a port of the one-way valve communicating with the heating chamber is an outlet.
8. The water tank for an electric water heater as claimed in claim 7, wherein the outlet of the check valve is disposed upward.
9. An electric water heater comprising a water tank and an electric heating part, wherein the water tank is the water tank for the electric water heater according to any one of claims 1 to 8, and the electric heating part is provided in the water tank.
10. The electric water heater according to claim 9, wherein the height of the electric heating part is lower than the height of the valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020969014.5U CN213630976U (en) | 2020-06-01 | 2020-06-01 | Water tank for electric water heater and electric water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020969014.5U CN213630976U (en) | 2020-06-01 | 2020-06-01 | Water tank for electric water heater and electric water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213630976U true CN213630976U (en) | 2021-07-06 |
Family
ID=76620779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020969014.5U Active CN213630976U (en) | 2020-06-01 | 2020-06-01 | Water tank for electric water heater and electric water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213630976U (en) |
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2020
- 2020-06-01 CN CN202020969014.5U patent/CN213630976U/en active Active
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