CN110873457B - Electric water heater - Google Patents
Electric water heater Download PDFInfo
- Publication number
- CN110873457B CN110873457B CN201811016848.8A CN201811016848A CN110873457B CN 110873457 B CN110873457 B CN 110873457B CN 201811016848 A CN201811016848 A CN 201811016848A CN 110873457 B CN110873457 B CN 110873457B
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- heating
- heater
- inner container
- electric water
- water heater
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 105
- 238000010438 heat treatment Methods 0.000 claims abstract description 164
- 238000009434 installation Methods 0.000 claims abstract description 21
- 238000007789 sealing Methods 0.000 claims description 12
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 24
- 238000010586 diagram Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000005485 electric heating Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/18—Water-storage heaters
- F24H1/20—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes
- F24H1/201—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes using electric energy supply
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/0005—Details for water heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
- F24H9/1818—Arrangement or mounting of electric heating means
Abstract
The invention discloses an electric water heater, which comprises a first heater and an inner container, wherein the first heater comprises a first heating part and a mounting part arranged at one end of the first heating part; the inner container is provided with a container opening and an installation opening for the first heating part to be inserted, and the installation part is detachably and hermetically installed at the installation opening. The technical scheme of the invention reduces the structural requirement on the flange at the liner opening and simplifies the structure of the flange.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to an electric water heater.
Background
With the continuous improvement of the living standard of people, the electric water heater is also increasingly popularized to families of common people, and the electric water heater is used not only for bath, but also on other living water, such as occasions requiring hot water, such as vegetable washing, hand washing and the like in winter, so that the performance requirement of the electric water heater is also higher and higher. For the existing electric water heater, the electric water heater is usually arranged at the flange of the liner opening of the liner, and the electric water heater extends into the liner from the liner opening, so that the limitation of the installation position of the electric water heater is large, and the structural requirement on the flange at the liner opening is high.
Disclosure of Invention
The invention mainly aims to provide an electric water heater, which aims to reduce the structural requirement on a flange at a liner opening.
In order to achieve the above object, the electric water heater according to the present invention includes:
a first heater including a first heating portion and a mounting portion provided at one end of the first heating portion; the method comprises the steps of,
the inner container is provided with an inner container opening and an installation opening for the first heating part to be inserted, and the installation part is detachably and hermetically installed at the installation opening.
Preferably, the mounting portion is screw-mounted to the mounting port.
Preferably, the electric water heater further comprises a cylindrical threaded sleeve, the threaded sleeve is welded at the mounting opening in a sealing mode, and the mounting portion is in threaded connection with the inner peripheral surface of the threaded sleeve.
Preferably, the mounting portion is further provided with a limiting portion, the limiting portion protrudes out of the outer peripheral surface of the mounting portion at least partially, and the limiting portion abuts against one end of the threaded sleeve to limit the matching depth of the mounting portion.
Preferably, a sealing ring is sleeved on the outer peripheral surface of the mounting part, which is close to the limiting part, and the sealing ring is positioned on one side of the limiting part, which faces the first heating part.
Preferably, the first heating part extends to the bottom, middle or upper part of the inner container.
Preferably, the first heating part is provided with a plurality of first heating parts, and at least two of the plurality of first heating parts respectively extend to different height positions of the liner.
Preferably, the first heater is provided in plurality at intervals along the vertical height direction of the inner container, so that the first heating parts of the plurality of first heaters are located at different height positions of the inner container.
Preferably, the equivalent diameter of the inner containerFor d mm, the distance L1 between the bottom of the first heating portion of the first heater located at the lowermost end and the bottom wall of the inner container is a mm, and the values of a and d satisfy the following relation: 0<a is less than or equal to 0.1d; and/or
The distance L2 between the top of the first heating part of the first heater at the uppermost end and the top wall of the liner is b millimeters, and the values of b and d satisfy the following relation: b is more than or equal to 0.1d and less than or equal to 0.25d.
Preferably, a temperature measuring tube extending into the inner container is arranged on the flange at the container opening.
Preferably, the electric water heater further comprises a second heater, the second heater comprises a second heating part positioned inside the inner container, and one end of the second heating part is fixed on the flange;
the first heater and the second heater are arranged at intervals along the height direction of the inner container, so that the first heating part and the second heating part are positioned at different height positions of the inner container.
Preferably, the second heating portion and the first heating portion are disposed in the inner container at intervals along an up-down direction, and one of the second heating portion and the first heating portion extends to an upper portion of the inner container and is disposed adjacent to a water inlet of a water outlet pipe of the electric water heater.
Preferably, the second heating parts are provided in plurality, and one ends of the second heating parts, which are far away from the flange, extend into the liner at intervals along the up-down direction respectively; or,
one ends of the plurality of second heating parts far away from the flange extend to the upper part, the middle part or the lower part of the inner container.
Preferably, the equivalent diameter of the inner containerFor d mm, a distance L1 between the bottom end of the lower one of the first heating portion and the second heating portion and the bottom wall of the inner container is a mm, and the values of a and d satisfy the following relation: 0<a is less than or equal to 0.1d; and/or
The distance L2 between the top end of the upper one of the first heating portion and the second heating portion and the top wall of the liner is b millimeters, and the values of b and d satisfy the following relation: b is more than or equal to 0.1d and less than or equal to 0.25d.
According to the technical scheme, the first heater is arranged at the mounting opening of the liner, so that the limitation that the existing electric heater can only be arranged on the flange of the liner opening is broken through, the structural requirement of the flange is reduced, and the structure of the flange is facilitated to be simplified.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an embodiment of an electric water heater according to the present invention;
FIG. 2 is a schematic diagram of a second heater of the electric water heater of FIG. 1;
FIG. 3 is an enlarged view of a portion of FIG. 1 at A;
FIG. 4 is a schematic view of a first heater of the electric water heater of FIG. 1;
fig. 5 is a schematic structural diagram of another embodiment of the electric water heater according to the present invention;
FIG. 6 is a schematic view of a first heater of the electric water heater of FIG. 5;
FIG. 7 is a schematic diagram of a second heater of the electric water heater of FIG. 5;
fig. 8 is a schematic structural diagram of an electric water heater according to another embodiment of the present invention;
FIG. 9 is a schematic diagram of a second heater of the electric water heater of FIG. 8;
fig. 10 is a schematic view of a first heater of the electric water heater of fig. 8;
FIG. 11 is a schematic view of an electric water heater according to another embodiment of the present invention;
FIG. 12 is a schematic view of a first heater of the electric water heater of FIG. 11 in an upper portion of the liner;
FIG. 13 is a schematic view of a first heater of the electric water heater of FIG. 11 positioned below the liner;
FIG. 14 is a schematic view of the locations of a first heater and a second heater of the electric water heater of FIG. 1;
FIG. 15 is a schematic view of the locations of a first heater and a second heater of the electric water heater of FIG. 5;
FIG. 16 is a schematic view of the locations of a first heater and a second heater of the electric water heater of FIG. 8;
fig. 17 is a schematic view of a first heater of the electric water heater of fig. 11.
Reference numerals illustrate:
the achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The invention provides an electric water heater.
In an embodiment of the present invention, referring to fig. 1 to 4, and referring to fig. 5, 8 and 11, the electric water heater 1 includes a first heater 40 and a liner 10, the first heater 40 includes a first heating portion 402 and a mounting portion 401 disposed at one end of the first heating portion 402; the liner 10 has a liner opening 101 and an installation opening 102 into which the first heating portion 402 is inserted, and the installation portion 401 is detachably and hermetically installed in the installation opening 102.
Specifically, the first heating portion 402 is a heating element of the first heater 40, and the first heating portion 402 may implement a heating function by adopting a plurality of manners such as PTC electric heating sheets, metal electric heating tubes, ceramic electric heating rods, and resistance wires. The liner 10 has a liner opening 101 and an installation opening 102, and the first heating portion 402 of the first heater 40 can extend into the liner 10 from the installation opening 102, and the installation portion 401 of the first heater 40 is fixed at the installation opening 102 in a sealing manner, so that the first heater 40 and the liner 10 can be installed. The mounting portion 401 is detachably connected with the mounting opening 102 in a sealing manner, so that the first heater 40 can be mounted in the liner 10, and further, the first heater 40 can be maintained and replaced at a later stage.
It should be noted that, the first heater 40 is installed at the installation opening 102 of the liner 10, thereby breaking through the limitation that the existing electric heater can only be installed on the flange 20 of the liner opening 101, reducing the structural requirement of the flange 20 and being beneficial to simplifying the structure of the flange 20 itself.
Further, the first heater 40 is mounted at the mounting opening 102 of the liner 10 in various manners, such as a screw connection, a snap connection, etc. Among them, the screw connection is reliable and has a good sealing effect, so that the mounting portion 401 of the first heater 40 is preferably screw-sealed to the mounting port 102.
In order to realize that the first heater 40 can be more firmly installed on the liner 10, in this embodiment, the electric water heater 1 further includes a threaded sleeve 103, the threaded sleeve 103 is in a cylindrical arrangement, the threaded sleeve 103 is welded at the installation opening 102 in a sealing manner, the outer circumferential surface of the installation portion 401 has external threads, the inner circumferential surface of the threaded sleeve 103 has internal threads, and the installation portion 401 is in threaded connection with the inner circumferential surface of the threaded sleeve 103 through the cooperation of the internal threads and the external threads.
It can be appreciated that the liner 10 has a limited liner wall thickness, and the difficulty of machining threads directly provided at the mouth wall surface of the mounting mouth 102 is high, and the length of the threads is short, so that the mounting of the mounting portion 401 is not facilitated. By welding the threaded sleeve 103 at the mounting opening 102, the length of the thread can be extended, so that the mounting part 401 is mounted on the threaded sleeve 103 more firmly; meanwhile, compared with the liner 10, the inner peripheral surface of the screw sleeve 103 is easier to form internal threads, so that the manufacturing difficulty is reduced.
In order to make the first heater 40 be more firmly mounted on the liner 10, in this embodiment, the mounting portion 401 is further provided with a limiting portion 403, where the limiting portion 403 at least partially protrudes from the outer peripheral surface of the mounting portion 401, and the limiting portion 403 abuts against one end of the threaded sleeve 103 to limit the fitting depth of the mounting portion 401.
It should be noted that, the limiting portion 403 at least partially protrudes from the outer peripheral surface of the mounting portion 401, and when the mounting portion 401 is engaged with the threaded sleeve 103, once the mounting portion is in place, the limiting portion 403 abuts against the threaded sleeve 103, so as to limit the engaging depth of the mounting portion 401, so as to prevent the problem of excessive mounting. The limiting portion 403 is preferably disposed in a ring shape along the circumferential direction of the mounting portion 401, so that the limiting portion 403 can be uniformly stressed, so that the first heater 40 can be better mounted on the screw sleeve 103.
In order to prevent leakage at the connection between the mounting portion 401 and the screw sleeve 103, in this embodiment, a sealing ring 50 is sleeved on the outer peripheral surface of the mounting portion 401 near the limiting portion 403, and the sealing ring 50 is located on the side of the limiting portion 403 facing the first heating portion 402, so as to seal the mounting gap between the mounting portion 401 and the screw sleeve 103, thereby further improving the sealing effect.
Further, for the first heater 40, a plurality of first heating portions 402 may be provided, so as to increase the heating power of the first heater 40, so that the electric water heater 1 has a higher hot water output rate, so as to meet the water requirement of the user. It should be noted that, the plurality of first heating portions 402 on the first heater 40 may be controlled by the control module, and the plurality of first heating portions 402 may be heated simultaneously, or only a part of the first heating portions 402 may be heated individually, so that the power-on state of the first heating portions 402 may be adjusted according to the actual water requirement of the user, so as to change the actual heating power of the first heater 40.
Further, in the present embodiment, the first heater 40 may be disposed at a plurality of positions of the liner 10, for example, the first heater 40 is disposed at the bottom, middle or upper portion of the liner 10. It will be appreciated that the heating effect of the first heater 40 on the water in the liner 10 is different due to the different height positions of the first heater.
The electric water heater 1 may further be provided with a plurality of first heaters 40, and the plurality of first heaters 40 are disposed at intervals along the vertical height direction of the inner container 10, so that the first heating portions 402 of the plurality of first heaters 40 are located at different height positions of the inner container 10. It will be appreciated that at least two of the first heating portions 402 of the plurality of first heaters 40 extend to different height positions of the inner container 10, respectively. In this way, the plurality of first heaters 40 can heat the parts of the inner container 10 at different height positions, i.e. can heat the water of the inner container 10 at a plurality of positions, thereby realizing a three-dimensional heating effect, greatly improving the heating effect, having better quick heating effect for the electric water heater 1, and improving the hot water output rate of the electric water heater 1.
Further, referring to fig. 11 to 13, in combination with fig. 17, when a plurality of first heaters 40 are provided in the inner container 10, the equivalent diameter of the inner container 10At d mm, a distance L1 between the bottom of the first heating portion 402 of the first heater 40 located at the lowermost end and the bottom wall of the liner 10The values for a mm, a and d satisfy the following relationship: 0<a is less than or equal to 0.1d; and/or
The distance L2 between the top of the first heating portion 402 of the uppermost first heater 40 and the top wall of the liner 10 is b mm, and the values of b and d satisfy the following relation: b is more than or equal to 0.1d and less than or equal to 0.25d.
It can be understood that when the plurality of first heaters 40 are provided, at this time, the first heater 40 closest to the top wall of the liner 10 is an upper heater, the first heater 40 closest to the bottom wall of the liner 10 is a lower heater, and by limiting the distance between the top end of the upper heater and the top wall of the liner 10, on one hand, the upper heater is beneficial to heating the top end of the water outlet pipe 30, and on the other hand, the situations that the upper heater is too close to the top wall of the liner 10, the flow of water is not smooth, the local temperature is too high, so that the temperature measuring tube 70 is quickly overheated, and the upper heater is powered off, and the like, can be prevented. By limiting the distance between the bottom end of the lower heater and the bottom wall of the inner container 10, the lower heater is made to be as close to the bottom wall of the inner container 10 as possible, so that the uniformity of the heating effect in the water storage heating process is ensured.
In the above embodiment, the flange 20 is installed at the liner opening 101 of the liner 10, the temperature measuring tube 70 extending into the liner 10 is installed on the flange 20, and the temperature measuring tube 70 is used for detecting the water temperature in the liner 10, so as to control the temperature of the first heater 40. The temperature measuring tube 70 may be formed of a temperature measuring element such as a thermocouple or a thermistor, and is not particularly limited herein.
Further, the electric water heater 1 further includes a second heater 60, the second heater 60 includes a second heating portion 601 located inside the inner container 10, and one end of the second heating portion 601 is fixed to the flange 20. It will be appreciated that by the cooperation of the second heater 60 with the first heater 40, the heating effect may be limited. Meanwhile, the second heater 60 and the first heater 40 may also be connected with a control module, so that the second heater 60 and the first heater 40 are selectively turned on at the same time according to the needs of a user, or only the second heater 60 or the first heater 40 is turned on, so as to realize adjustment of heating power.
In the above-described embodiment, the first heater 40 and the second heater 60 are arranged at intervals in the vertical height direction of the inner container 10 such that the first heating portion 402 and the second heating portion 601 are located at different height positions of the inner container 10. In this way, the first heater 40 and the second heater 60 can jointly heat different positions of the liner 10, thereby realizing a "three-dimensional" heating effect and greatly improving the heating effect.
Further, referring to fig. 1 to 10 in combination with fig. 14 to 16, the equivalent diameter of the liner 10For d mm, the distance L1 between the bottom end of the lower one of the first heating portion 402 and the second heating portion 601 and the bottom wall of the liner 10 is a mm, and the values of a and d satisfy the following relation: 0<a is less than or equal to 0.1d; and/or
The distance L2 between the top end of the upper one of the first heating portion 402 and the second heating portion 601 and the top wall of the liner 10 is b millimeters, and the values of b and d satisfy the following relation: b is more than or equal to 0.1d and less than or equal to 0.25d.
It can be understood that when the first heater 40 and the second heater 60 are simultaneously disposed in the electric water heater 1, at this time, one of the first heater 40 and the second heater 60 closest to the top wall of the inner container 10 is an upper heater, and the other of the first heater 40 and the second heater 60 closest to the bottom wall of the inner container 10 is a lower heater, so that the upper heater is beneficial to heating the top end of the water outlet pipe 30 by limiting the distance between the top end of the upper heater and the top wall of the inner container 10, and on the other hand, the situations that the water flow is not smooth due to the fact that the upper heater is too close to the top wall of the inner container 10, and the upper heater is powered off due to the fact that the temperature measuring tube 70 is too fast overtemperature due to local temperature are prevented. By limiting the distance between the bottom end of the lower heater and the bottom wall of the inner container 10, the lower heater is made to be as close to the bottom wall of the inner container as possible, so that the uniformity of the heating effect in the water storage heating process is ensured.
It should be noted that, when the second heater 60 is disposed in the electric water heater 1, compared with the existing water heater, the number of electric heaters disposed on the flange 20 is significantly reduced, so that the structural requirement of the flange 20 can be reduced.
Further, for the first heater 40 and the second heater 60, the second heating portion 601 and the first heating portion 402 are provided in the inner container 10 at intervals in the up-down direction, and one of the second heating portion 601 and the first heating portion 402 extends to the upper portion of the inner container 10 and is provided adjacent to the water inlet of the water outlet pipe 30 of the electric water heater 1.
It can be understood that the hot water in the inner container 10 flows out through the water outlet pipe 30, and the second heating portion 601 and the first heating portion 402 are respectively arranged along the up-down direction, so that a three-dimensional heating effect can be realized, and the heating effect is greatly improved; meanwhile, the second heating part 601 or the first heating part 402 located at the upper part of the inner container 10 is close to the water inlet at the top end of the water outlet pipe 30, so that the water around the water inlet of the water outlet pipe 30 is locally heated, and the whole water in the inner container 10 is not required to be heated completely, so that the quick output of hot water is realized, and the quick heating effect of the electric water heater 1 is realized.
Further, the second heating portions 601 are provided in plurality, and one ends of the second heating portions 601 away from the flange 20 are respectively extended into the liner 10 at intervals in the up-down direction; alternatively, the ends of the plurality of second heating parts 601 remote from the flange 20 each extend to the upper, middle or lower portion of the inner container 10.
It can be understood that by providing a plurality of second heating portions 601, the heating power of the second heater 60 can be increased; the plurality of second heating portions 601 are distributed in the liner 10 in the up-down direction, and a "three-dimensional" heating effect is also achieved, so that the heating effect is greatly improved. In addition, the plurality of second heating parts 601 may be turned on at the same time or only part of the second heating parts 601 may be turned on, and thus the adjustment of the heating power of the second heater 60 may be achieved according to the water demand of the user.
For a better understanding of the present invention, the following description is made in connection with specific preferred embodiments:
in a preferred embodiment, referring to fig. 1 to 4, the electric water heater 1 includes a second heater 60 and a first heater 40, the second heater 60 has two second heating portions 601, one of the second heating portions 601 is disposed near the upper portion of the inner container 10 and near the water inlet of the water outlet pipe 30, the other second heating portion 601 is disposed near the middle portion of the inner container 10, and the first heating portion 402 of the first heater 40 is disposed near the lower portion of the inner container 10. The first heating portion 402 and the two second heating portions 601 are distributed in the liner 10 along the up-down direction, so that a "three-dimensional" heating effect is achieved, and the heating effect is greatly improved. The first heating portion 402 and the two second heating portions 601 may be separately controlled, so that the heating power may be adjusted according to the actual water demand of the user.
With continued reference to fig. 1 to 4, and with reference to fig. 14, the first heater 40 is close to the bottom wall of the liner 10, the distance L1 between the lower end of the first heating portion 402 of the first heater 40 and the bottom wall of the liner 10 is a mm, and the equivalent diameter of the liner 10 isThe values for d mm, a and d satisfy the following relationship: 0<a is less than or equal to 0.1d; the distance L2 between the second heating portion 601 closest to the top wall of the liner 10 and the top wall of the liner 10 in the second heater 60 is b mm, and the values of b and d satisfy the following relation: b is more than or equal to 0.1d and less than or equal to 0.25d. Wherein the equivalent diameter of the inner container 10 +.>The numerical range of (2) is preferably 300 mm to 410 mm.
In another preferred embodiment, referring to fig. 5 to 7, the electric water heater 1 includes a second heater 60 and a first heater 40, the second heater 60 has two second heating portions 601, wherein the two second heating portions 601 are both disposed near the lower portion of the inner container 10, the first heating portion 402 of the first heater 40 is disposed near the upper portion of the inner container 10, and the first heating portion 402 is disposed near the water inlet of the water outlet pipe 30. The first heating portion 402 and the two second heating portions 601 are distributed in the liner 10 along the up-down direction, so that a "three-dimensional" heating effect is achieved, and the heating effect is greatly improved. The first heating portion 402 and the two second heating portions 601 may be separately controlled, so that the heating power may be adjusted according to the actual water demand of the user.
With continued reference to fig. 5 to 7, and with reference to fig. 15, the first heater 40 is close to the top wall of the liner 10, the distance L2 between the top end of the first heating portion 402 of the first heater 40 and the top wall of the liner 10 is b mm, and the equivalent diameter of the liner 10 isThe values for d mm, b and d satisfy the following relationship: b is more than or equal to 0.1d and less than or equal to 0.25d; the distance L1 between the bottom end of the second heating portion 601 closest to the bottom wall of the inner container 10 in the second heater 60 and the bottom wall of the inner container 10 is a mm, and the values of a and d satisfy the following relation: 0<a is less than or equal to 0.1d. Wherein the equivalent diameter of the inner container 10 +.>The numerical range of (2) is preferably 300 mm to 410 mm.
In still another preferred embodiment, referring to fig. 8 to 10, the electric water heater 1 includes a second heater 60 and a first heater 40, a second heating portion 601 of the second heater 60 is disposed near the upper portion of the inner container 10, and the second heating portion 601 is disposed near the water inlet of the water outlet pipe 30. The first heater 40 has two first heating portions 402, and both the first heating portions 402 are located at the lower portion of the liner 10. The second heater 60 and the two first heating portions 402 are distributed in the liner 10 in the up-down direction, thereby realizing a "three-dimensional" heating effect, so that the heating effect is greatly improved. The second heating portion 601 and the two first heating portions 402 can be controlled independently, so that the heating power can be adjusted according to the actual water demand of the user.
With continued reference to fig. 8 to 10, and with reference to fig. 16, the first heater 40 is close to the bottom wall of the liner 10, the distance L1 between the lower end of the first heating portion 402 of the first heater 40 and the bottom wall of the liner 10 is a mm, and the equivalent diameter of the liner 10 isThe values for d mm, a and d satisfy the following relationship: 0<a is less than or equal to 0.1d; the top end of the second heating portion 601 of the second heater 60 and the linerThe distance L2 between the top walls of 10 is b mm, and the values of b and d satisfy the following relation: b is more than or equal to 0.1d and less than or equal to 0.25d. Wherein the equivalent diameter of the inner container 10 +.>The numerical range of (2) is preferably 300 mm to 410 mm.
In a further preferred embodiment, referring to fig. 11 to 13, the electric water heater 1 comprises two first heaters 40, one of which is located at the lower portion of the inner container 10 and the other of which is located at the upper portion of the inner container 10. The first heating part 402 of the first heater 40 located at the upper portion of the inner container 10 is disposed adjacent to the water inlet of the water outlet pipe 30. The two first heaters 40 are arranged along the up-down direction of the inner container 10, thereby realizing a 'three-dimensional' heating effect, so that the heating effect is greatly improved. The first heater 40 located at the lower portion of the liner 10 has two first heating portions 402, so that the two first heaters 40 have three first heating portions 402 in total, and the three first heating portions 402 can be controlled individually, so that the heating power can be adjusted according to the actual water demand of the user.
With continued reference to fig. 11 to 13, and in conjunction with fig. 17, the distance L1 between the bottom of the first heating portion 402 of the first heater 40 located at the lowermost end and the bottom wall of the liner 10 is a mm, and the values of a and d satisfy the following relation: 0<a is less than or equal to 0.1d; the distance L2 between the top of the first heating portion 402 of the uppermost first heater 40 and the top wall of the liner 10 is b mm, and the values of b and d satisfy the following relation: b is more than or equal to 0.1d and less than or equal to 0.25d. Wherein the equivalent diameter of the liner 10The numerical range of (2) is preferably 300 mm to 410 mm.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (12)
1. An electric water heater, comprising:
a first heater including a first heating portion and a mounting portion provided at one end of the first heating portion; the method comprises the steps of,
the inner container is provided with an inner container opening and an installation opening into which the first heating part is inserted, and the installation part is detachably and hermetically installed at the installation opening;
the first heaters are arranged at intervals along the height direction of the inner container, so that the first heating parts of the first heaters are positioned at different height positions of the inner container;
the equivalent diameter phi of the liner is d mm, the distance L1 between the bottom of the first heating part of the first heater positioned at the lowest end and the bottom wall of the liner is a mm, and the numerical values of a and d meet the following relation: 0<a is less than or equal to 0.1d; and
the distance L2 between the top of the first heating part of the first heater at the uppermost end and the top wall of the liner is b millimeters, and the values of b and d satisfy the following relation: b is more than or equal to 0.1d and less than or equal to 0.25d.
2. The electric water heater of claim 1, wherein the mounting portion is threadably mounted to the mounting port.
3. The electric water heater according to claim 2, further comprising a cylindrical screw sleeve, wherein the screw sleeve is sealed and welded at the mounting opening, and the mounting portion is in threaded connection with the inner peripheral surface of the screw sleeve.
4. The electric water heater as claimed in claim 3, wherein the mounting portion is further provided with a limiting portion, the limiting portion protrudes at least partially from an outer circumferential surface of the mounting portion, and the limiting portion abuts against one end of the screw sleeve to limit a fitting depth of the mounting portion.
5. The electric water heater according to claim 4, wherein a sealing ring is sleeved on the outer peripheral surface of the mounting portion, which is close to the limiting portion, and the sealing ring is located on one side of the limiting portion, which faces the first heating portion.
6. The electric water heater as claimed in claim 1, wherein said first heating portion is provided in plurality.
7. The electric water heater of claim 1, wherein the first heating portion extends to a bottom, middle or upper portion of the liner.
8. The electric water heater as claimed in claim 1, wherein a temperature measuring tube extending into the inner container is installed on the flange at the container mouth.
9. The electric water heater of claim 8, further comprising a second heater including a second heating portion inside the liner, one end of the second heating portion being secured to the flange;
the first heater and the second heater are arranged at intervals along the height direction of the inner container, so that the first heating part and the second heating part are positioned at different height positions of the inner container.
10. The electric water heater as claimed in claim 9, wherein the second heating part and the first heating part are provided in the inner container at intervals in an up-down direction, and one of the second heating part and the first heating part extends to an upper portion of the inner container and is provided adjacent to a water inlet of a water outlet pipe of the electric water heater.
11. The electric water heater according to claim 9, wherein a plurality of second heating portions are provided, and one ends of the plurality of second heating portions, which are far from the flange, extend into the inner container at intervals in the up-down direction; or,
one ends of the plurality of second heating parts far away from the flange extend to the upper part, the middle part or the lower part of the inner container.
12. The electric water heater as claimed in claim 9, wherein the equivalent diameter Φ of the inner container is d mm, the distance L1 between the bottom end of one of the first heating portion and the second heating portion located below and the bottom wall of the inner container is a mm, and the values of a and d satisfy the following relation: 0<a is less than or equal to 0.1d; and/or
The distance L2 between the top end of the upper one of the first heating portion and the second heating portion and the top wall of the liner is b millimeters, and the values of b and d satisfy the following relation: b is more than or equal to 0.1d and less than or equal to 0.25d.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811016848.8A CN110873457B (en) | 2018-08-31 | 2018-08-31 | Electric water heater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811016848.8A CN110873457B (en) | 2018-08-31 | 2018-08-31 | Electric water heater |
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| CN110873457A CN110873457A (en) | 2020-03-10 |
| CN110873457B true CN110873457B (en) | 2023-11-28 |
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| CN110873457A (en) | 2020-03-10 |
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