Electric heating tube assembly and electric water heater

Abstract

The utility model discloses an electric heating tube assembly which comprises a preheating tube, a quick heating tube and a flange plate, the preheating tube comprises a first inclined section, a first connecting section and a bending section, one end of the first inclined section is connected with the flange plate, and the other end of the first inclined section extends downwards in the direction away from the flange plate and is connected with one end of the first connecting section; the other end of the first connecting section is connected with one end of the bending section; the quick-heating pipe comprises a second inclined section, a second connecting section and a quick-heating section, one end of the second inclined section is connected with the flange plate, the other end of the second inclined section extends downwards in the direction away from the flange plate and is connected with one end of the second connecting section, the other end of the second connecting section is connected with one end of the quick-heating section, and the other end of the quick-heating section extends upwards; the second inclined section and the second connecting section are located in the same plane, the first connecting section and the bent section are separated to form a containing space, and the second connecting section is located in the containing space; the utility model further discloses an electric water heater applying the electric heating tube assembly, and compared with an existing quick-heating type electric water heater, the electric water heater can solve the problem that an inner container is prone to water leakage.

Description

Technical Field

[0001] The present application relates to the technical field of water heaters, and in particular to an electric heating tube assembly and an electric water heater. Background Art

[0002] In the prior art, a storage-type electric water heater refers to a fixed device for heating water. It can store hot water for a long time or temporarily. It is easy to install and inexpensive, so it is loved by more and more users. However, a storage-type electric water heater needs to be heated for a long time and can only be used after reaching a certain temperature. Therefore, a storage-type electric water heater usually requires a long wait when using hot water. In order to reduce the waiting time, a quick-heating electric water heater has appeared on the market. Its electric heating tube includes a preheating tube and a quick-heating tube. The preheating tube is used to heat the hot water at the bottom of the inner tank, and the quick-heating tube is used to heat the water at the top of the inner tank. In order to meet the temperature requirement of using hot water in a short time, the quick-heating tube is arranged as far as possible in the top area of ​​the inner tank. Since the preheating tube and the quick-heating tube are at The direction of the inner tank is different, and in order to meet the requirement that the quick-heating pipe is located in the top area of ​​the inner tank as much as possible and facilitate the installation of the preheating pipe and the quick-heating pipe, in the existing electric heating pipe installation structure, a double flange structure is set in the inner tank, that is, two flange openings are set to respectively install the preheating pipe and the quick-heating pipe, but this installation structure increases the processing cost and is prone to water leakage; or an inner tank with an existing single flange structure is adopted, but in order to meet the requirement that the quick-heating pipe is located in the top area of ​​the inner tank as much as possible and facilitate the installation of the preheating pipe and the quick-heating pipe, the flange opening needs to be opened very large to meet the installation requirements of the preheating pipe and the quick-heating pipe, which has high requirements on sealing and is prone to water leakage, and is not applicable to the existing inner tank flange opening, resulting in increased product production costs. Utility Model Content

[0003] One of the technical problems solved by the utility model is to provide an electric heating pipe assembly, which can solve the problem that the inner tank of the existing instant electric water heater is prone to water leakage.

[0004] The second technical problem solved by the utility model is to provide an electric water heater, which can solve the problem that the inner tank of the existing instant electric water heater is prone to water leakage and reduce the production cost of the product.

[0005] The first technical problem mentioned above is solved by the following technical solution:

[0006] An electric heating tube assembly includes: a preheating tube, a quick heating tube and a flange.

[0007] The preheating tube comprises a first inclined section, a first connecting section and a bent section, one end of the first inclined section is connected to the flange, the other end of the first inclined section extends downward in a direction away from the flange, the other end of the first inclined section is connected to one end of the first connecting section; the other end of the first connecting section is connected to one end of the bent section;

[0008] The rapid heating pipe includes a second inclined section, a second connecting section and a rapid heating section, one end of the second inclined section is connected to the flange, and the other end extends downward in a direction away from the flange, the other end of the second inclined section is connected to one end of the second connecting section, the other end of the second connecting section is connected to one end of the rapid heating section, and the other end of the rapid heating section extends upward; the second inclined section and the second connecting section are located in the same plane, the first connecting section and the bending section are separated to form an accommodating space, and the second connecting section is located in the accommodating space.

[0009] The utility model provides an electric heating pipe assembly. When the electric heating pipe is assembled with an inner tank, the fast heating section of the fast heating pipe first extends into the flange opening of the inner tank. When the extension is completed, the fast heating section is deflected at a certain angle so that the first connecting section, the bending section and the second connecting section extend into the inner tank. When the extension is complete, the fast heating pipe is deflected at a certain angle so that the first inclined section and the second inclined section extend into the inner tank. When the extension is complete, the flange is finally sealed and fixedly connected to the flange opening. Compared with the electric heating pipe assembly of the existing fast heating electric water heater, the first connecting section and the bending section are separated to form an accommodation space, and the second connecting section is located in the accommodation space, which reduces the volume of the junction of the first connecting section, the bending section and the second connecting section. Therefore, when the bent section of the preheating tube is completed to extend into the inner tank, the angular margin of the deflection at the junction of the first connecting section, the bent section and the second connecting section is increased, thereby reducing the risk of the first connecting section, the bent section and the second connecting section interfering with the flange and causing the electric heating tube to be unable to be installed or forced to be installed and causing deformation and damage. At the same time, the length of the quick-heating section can be increased, so that the quick-heating section is located as far as possible in the top area of ​​the inner tank to meet the temperature requirement of using hot water in a short time; therefore, compared with the existing quick-heating electric water heater, the electric heating tube assembly meets the installation requirements of the existing single-flange inner tank and satisfies the requirement that the quick-heating section is located as far as possible in the top area of ​​the inner tank, thereby reducing the risk of water leakage.

[0010] In one embodiment, the plane where the first connecting section is located is parallel to the plane where the bending section is located.

[0011] In one of the embodiments, the other end of the bent section is bent upward and extends in a direction close to the flange.

[0012] In one embodiment, the extension direction of the first inclined section forms a first angle with the plane where the first connecting section is located, the extension direction of the second inclined section forms a second angle with the plane where the bending section is located, and the first angle is smaller than the second angle.

[0013] In one embodiment, the first angle is 135°-137°, and the second angle is 145°-147°.

[0014] In one embodiment, the difference between the second angle and the first angle is equal to 10°

[0015] In one of the embodiments, the quick heating pipe further includes an extension section, the quick heating section is connected to the second connecting section via the extension section, and the extension section, the second connecting section and the second inclined section are located in the same plane.

[0016] In one of the embodiments, the extension direction of the extension section forms a third angle with the plane where the second connecting section is located, and the third angle is 88°-90°.

[0017] In one of the embodiments, the extension direction of the rapid heating section forms a fourth angle with the plane where the extension section is located, and the fourth angle is 151°-157°.

[0018] The above second technical problem is solved by the following technical solution:

[0019] An electric water heater comprises an inner tank and the above-mentioned electric heating tube assembly; one end of the inner tank is provided with a flange opening, the preheating tube and the quick-heating tube extend into the flange opening, the first connecting section, the bending section and the second connecting section are located at the bottom of the inner tank; the flange plate is sealed and connected to the flange opening.

[0020] The utility model provides an electric water heater. When assembling, the quick-heating section of the quick-heating pipe is first extended into the flange opening of the inner tank. When the extension is completed, it is deflected at a certain angle so that the first connecting section, the bending section and the second connecting section are extended into the inner tank. When the extension is complete, it is deflected at a certain angle so that the first inclined section and the second inclined section are extended into the inner tank. When the extension is complete, the flange is finally sealed and fixedly connected to the flange opening. Compared with the electric heating pipe assembly of the existing quick-heating electric water heater, since the first connecting section and the bending section are separated to form an accommodation space, the second connecting section is located in the accommodation space, which reduces the volume of the junction of the first connecting section, the bending section and the second connecting section. Therefore, when the preheating pipe is When the bending section is completed and extended into the inner tank, the angular margin of deflection at the junction of the first connecting section, the bending section and the second connecting section is increased, thereby reducing the risk of the first connecting section, the bending section and the second connecting section interfering with the flange mouth and causing the electric heating tube to be unable to be installed or forced installation causing deformation and damage. At the same time, the length of the quick-heating section can be increased, so that the quick-heating section is located as much as possible in the top area of ​​the inner tank to meet the temperature requirement of using hot water in a short time; therefore, compared with the existing quick-heating electric water heater, the electric heating tube assembly meets the installation requirements of the existing inner tank with a single flange mouth size, without changing the size of the existing flange mouth of the inner tank, thereby reducing the risk of water leakage and the production cost of the product.

[0021] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present application, nor is it intended to limit the scope of the present application. Other features of the present application will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 This is a front view of an electric heating tube assembly provided by the present application;

[0024] Figure 2 It is a left view of an electric heating tube assembly provided by the present application;

[0025] Figure 3 This is a schematic diagram of the three-dimensional structure of an electric heating pipe assembly provided by the present application;

[0026] Figure 4 This is a schematic diagram of the assembly process of an electric heating tube assembly provided by the present application;

[0027] Figure 5 It is a schematic diagram of the cross-sectional structure of an electric water heater provided by the present application;

[0028] Figure 6 This is another cross-sectional structural schematic diagram of an electric water heater provided by the present application.

[0029] In the figure, the reference numerals are:

[0030] 1. Preheating tube; 10. First inclined section; 11. First connecting section; 12. Bending section; 13. Accommodating space; 2. Rapid heating tube; 20. Second inclined section; 21. Second connecting section; 22. Rapid heating section; 23. Extending section; 3. Flange; 4. First angle; 5. Second angle; 6. Third angle; 7. Fourth angle; 8. Inner tank. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0032] In the description of the present invention, it should be understood that the terms "center", "upper", "lower" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention.

[0033] Hereinafter, the terms "including", "having" and their cognates, which may be used in various embodiments of the present invention, are intended only to indicate specific features, numbers, steps, operations, elements, components or combinations of the foregoing items, and should not be understood as first excluding the existence of one or more other features, numbers, steps, operations, elements, components or combinations of the foregoing items or adding the possibility of one or more features, numbers, steps, operations, elements, components or combinations of the foregoing items.

[0034] Furthermore, the terms “first”, “second”, etc. are merely used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0035] Unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meanings as those generally understood by those skilled in the art to which the various embodiments of the present invention belong. The terms (such as those defined in generally used dictionaries) will be interpreted as having the same meanings as the contextual meanings in the relevant technical field and will not be interpreted as having idealized meanings or overly formal meanings unless clearly defined in the various embodiments of the present invention.

[0036] like Figure 1-4 As shown, in one embodiment, the utility model provides

[0037] An electric heating pipe assembly, comprising: a preheating pipe 1, a quick heating pipe 2 and a flange 3,

[0038] The preheating tube 1 comprises a first inclined section 10, a first connecting section 11 and a bent section 12, one end of the first inclined section 10 is connected to the flange 3, and the other end extends downward in a direction away from the flange 3, the other end of the first inclined section 10 is connected to one end of the first connecting section 11; the other end of the first connecting section 11 is connected to one end of the bent section 12;

[0039] The rapid heating pipe 2 includes a second inclined section 20, a second connecting section 21 and a rapid heating section 22, one end of the second inclined section 20 is connected to the flange 3, and the other end extends downward in a direction away from the flange 3, the other end of the second inclined section 20 is connected to one end of the second connecting section 21, the other end of the second connecting section 21 is connected to one end of the rapid heating section 22, and the other end of the rapid heating section 22 extends upward; the second inclined section 20 and the second connecting section 21 are located in the same plane, the first connecting section 11 and the bending section 12 are separated to form a accommodating space 13, and the second connecting section 21 is located in the accommodating space 13.

[0040] On the basis of the above structure, when assembled with the inner tank 8, the quick heating section 22 of the quick heating pipe 2 first extends into the flange opening of the inner tank 8, and when the extension is completed, it is deflected at a certain angle so that the first connecting section 11, the bending section 12 and the second connecting section 21 extend into the inner tank 8, and when it is fully extended, it is deflected at a certain angle so that the first inclined section 10 and the second inclined section 20 extend into the inner tank 8, and when it is fully extended, the flange 3 is finally sealed and fixed to the flange opening; compared with the existing electric heating pipe assembly of the quick heating type electric water heater, since the first connecting section 11 and the bending section 12 are separated to form a receiving space 13, the second connecting section 21 is located in the receiving space 13, which reduces the confluence of the first connecting section 11, the bending section 12 and the second connecting section 21 The volume of the preheating tube 1 is increased, so when the bending section 12 of the preheating tube 1 completes the extension into the inner tank 8, the angular margin of the junction of the first connecting section 11, the bending section 12 and the second connecting section 21 is increased, and the risk of the first connecting section 11, the bending section 12 and the second connecting section 21 interfering with the flange mouth and causing the electric heating tube to be unable to be installed or forced to be installed, causing deformation and damage, can be reduced. At the same time, the length of the quick-heating section 22 can be increased, so that the quick-heating section 22 is located as far as possible in the top area of ​​the inner tank 8 to meet the temperature requirement of using hot water in a short time; therefore, compared with the existing quick-heating electric water heater, the electric heating tube assembly meets the installation requirements of the existing single-flange inner tank 8 and satisfies the requirement that the quick-heating section 22 is located as far as possible in the top area of ​​the inner tank 8, reducing the risk of water leakage.

[0041] It should be noted that the second inclined section 20 and the second connecting section 21 are located in the same plane, so that the plane where the second inclined section 20 is located passes through the first inclined section 10, meeting the requirement that the first inclined section 10 and the second inclined section 20 pass through the flange opening of the inner liner 8. Furthermore, the plane where the second inclined section 20 is located is perpendicular to the plane where the first inclined section 10 is located.

[0042] Furthermore, in order to facilitate the processing of the bending section 12 and avoid interference between the bending section 12 and the opening of the inner container 8, in the present embodiment, the plane where the first connecting section 11 is located is parallel to the plane where the bending section 12 is located.

[0043] In this embodiment, the other end of the bending section 12 is bent upward and extends in a direction close to the flange 3. The advantage of this arrangement is that the effective heating part of the preheating tube 1 is retained at the bottom of the inner tank 8 to the greatest extent, thereby effectively improving the hot water output rate of the electric water heater.

[0044] In this embodiment, the extension direction of the first inclined section 10 forms a first angle 4 with the plane where the first connecting section 11 is located, and the extension direction of the second inclined section 20 forms a second angle 5 with the plane where the bending section 12 is located, and the first angle 4 is smaller than the second angle 5. In this way, the length of the connecting pipe section between the second inclined section 20 and the flange 3 is reduced, so that the extension direction of the second inclined section 20 penetrates into the accommodating space 13, so that the second connecting section 21 is located in the accommodating space 13, while increasing the angular margin of deflection at the junction of the first connecting section 11, the bending section 12 and the second connecting section 21, thereby avoiding the interference between the second inclined section 20 and the inner liner 8 and causing the inability to assemble.

[0045] Furthermore, in this embodiment, if Figure 1 and Figure 4 As shown, the first angle is 135°-137°. With such a configuration, when the first connecting section 11 and the bending section 12 pass through the flange opening of the inner tank 8, it is prevented that the first angle 4 is too small so that the first inclined section 10 interferes with the inner tank 8 and causes the situation that the assembly cannot occur. At the same time, it is also prevented that the first angle 4 is too large so that the first connecting section 11 and the bending section 12 are far away from the water inlet of the water inlet pipe of the inner tank 8; similarly, the second angle is 145°-147°, which reduces the length of the connecting pipe section between the second inclined section 20 and the flange 3, and makes the extension direction of the second inclined section 20 penetrate into the accommodating space 13, so that the second connecting section 21 is located in the accommodating space 13, while increasing the angular margin that can be deflected at the junction of the first connecting section 11, the bending section 12 and the second connecting section 21, so as to prevent the second inclined section 20 from interfering with the inner tank 8 and causing the situation that the assembly cannot occur.

[0046] Preferably, in this embodiment, the first angle 4 is 135°, and the second angle 5 is 145°.

[0047] Further, in this embodiment, the difference between the second angle 5 and the first angle 4 is equal to 10°, so that the extension direction of the second inclined section 20 just penetrates into the accommodating space 13 .

[0048] In this embodiment, the quick heating tube 2 also includes an extension section 23, and the quick heating section 22 is connected to the second connecting section 21 through the extension section 23. The extension section 23, the second connecting section 21 and the second inclined section 20 are located in the same plane. Such an arrangement improves the passability of the extension section 23 in the flange opening of the inner tank 8.

[0049] Furthermore, in this embodiment, the extension direction of the extension section 23 forms a third angle 6 with the plane where the second connecting section 21 is located, and the third angle 6 is 88°-90°. This arrangement allows the rapid heating section 22 to be located at the top of the inner tank 8 as much as possible, thereby improving the hot water output rate of the electric water heater.

[0050] Furthermore, in this embodiment, if Figure 2 and Figure 6 As shown, the extension direction of the quick-heating section 22 forms a fourth angle 7 with the plane where the extension section 23 is located, and the size of the fourth angle 7 is 151°-157°. Since the water inlet pipe of the electric water heater is usually made of silicone material, the advantage of such a design is that after the electric heating tube assembly is assembled, the first connecting section 11, the bending section 12 and the second connecting section 21 are prevented from being too close to the water inlet pipe to melt the water inlet pipe, and the first connecting section 11, the bending section 12 and the second connecting section 21 can be maximized to be located at the bottom of the inner tank 8, thereby effectively improving the hot water output rate of the electric water heater.

[0051] Preferably, in this embodiment, if Figure 2 and Figure 5-6 As shown, the fourth angle 7 is 157°, which makes the distance between the first connecting section 11, the bending section 12, the second connecting section 21 and the water inlet pipe the minimum distance. At the same time, the extension direction of the quick heating section 22 in the inner tank 8 is the same as the extension direction of the water outlet pipe in the inner tank 8, avoiding interference between the quick heating section 22 and the water outlet pipe, so that the quick heating section 22 can be set near the water outlet pipe to improve the hot water output rate of the electric water heater.

[0052] like Figure 5-6 As shown, an embodiment of the utility model also provides an electric water heater, including an inner tank 8 and the above-mentioned electric heating tube assembly; one end of the inner tank 8 is provided with a flange opening, the preheating tube 1 and the quick heating tube 2 extend into the flange opening, the first connecting section 11, the bending section 12 and the second connecting section 21 are located at the bottom of the inner tank 8; the flange plate 3 is sealed and connected to the flange opening.

[0053] On the basis of the above structure, during assembly, the quick-heating section 22 of the quick-heating tube 2 first extends into the flange opening of the inner tank 8, and when the extension is completed, it is deflected at a certain angle so that the first connecting section 11, the bending section 12 and the second connecting section 21 extend into the inner tank 8, and when it is fully extended, it is deflected at a certain angle so that the first inclined section 10 and the second inclined section 20 extend into the inner tank 8, and when it is fully extended, the flange 3 is finally sealed and fixed to the flange opening; compared with the existing electric heating tube assembly of the quick-heating electric water heater, since the first connecting section 11 and the bending section 12 are separated to form a receiving space 13, the second connecting section 21 is located in the receiving space 13, which reduces the volume of the junction of the first connecting section 11, the bending section 12 and the second connecting section 21, so when When the bent section 12 of the preheating tube 1 is completely extended into the inner tank 8, the angular margin of deflection at the junction of the first connecting section 11, the bent section 12 and the second connecting section 21 is increased, thereby reducing the risk of the first connecting section 11, the bent section 12 and the second connecting section 21 interfering with the flange mouth and causing the electric heating tube to be unable to be installed or forced to be installed, thereby causing deformation and damage. At the same time, the length of the quick-heating section 22 can be increased, so that the quick-heating section 22 is located as far as possible in the top area of ​​the inner tank 8 to meet the temperature requirements of using hot water in a short time; therefore, compared with the existing quick-heating electric water heater, the electric heating tube assembly meets the installation requirements of the existing inner tank 8 with a single flange mouth size, without changing the size of the flange mouth of the existing inner tank 8, thereby reducing the risk of water leakage and the production cost of the product.

[0054] It should be noted that the sealing structure between the flange 3 and the flange opening is a conventional structure in the art, and therefore will not be described in detail here.

[0055] The embodiments of the present application provide the above specific implementation methods, which do not constitute a limitation on the protection scope of the present application. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An electric heating tube assembly, characterized in that: include: Preheating tube, quick heating tube and flange, The preheating tube comprises a first inclined section, a first connecting section and a bent section, one end of the first inclined section is connected to the flange, the other end of the first inclined section extends downward in a direction away from the flange, the other end of the first inclined section is connected to one end of the first connecting section; the other end of the first connecting section is connected to one end of the bent section; The rapid heating pipe includes a second inclined section, a second connecting section and a rapid heating section, one end of the second inclined section is connected to the flange, and the other end extends downward in a direction away from the flange, the other end of the second inclined section is connected to one end of the second connecting section, the other end of the second connecting section is connected to one end of the rapid heating section, and the other end of the rapid heating section extends upward; the second inclined section and the second connecting section are located in the same plane, the first connecting section and the bending section are separated to form an accommodating space, and the second connecting section is located in the accommodating space.

2. The electric heating tube assembly according to claim 1, characterized in that: The plane where the first connecting section is located is parallel to the plane where the bending section is located.

3. The electric heating tube assembly according to claim 2, characterized in that: The other end of the bent section is bent upward and extends in a direction close to the flange.

4. The electric heating tube assembly according to claim 3, characterized in that: The extension direction of the first inclined section forms a first angle with the plane where the first connecting section is located, the extension direction of the second inclined section forms a second angle with the plane where the bending section is located, and the first angle is smaller than the second angle.

5. The electric heating tube assembly according to claim 4, characterized in that: The first angle is between 135° and 137°, and the second angle is between 145° and 147°.

6. The electric heating tube assembly according to claim 5, characterized in that: The difference between the second angle and the first angle is equal to 10°.

7. The electric heating tube assembly according to claim 1, characterized in that: The quick heating pipe further includes an extension section, the quick heating section is connected to the second connecting section via the extension section, and the extension section, the second connecting section and the second inclined section are located in the same plane.

8. The electric heating tube assembly according to claim 7, characterized in that: An extending direction of the extending section forms a third angle with the plane where the second connecting section is located, and a magnitude of the third angle is 88°-90°.

9. The electric heating tube assembly according to claim 8, characterized in that: The extension direction of the rapid heating section forms a fourth angle with the plane where the extension section is located, and the magnitude of the fourth angle is 151°-157°.

10. An electric water heater, characterized in that: It includes an inner tank and an electric heating tube assembly as described in any one of claims 1 to 9; a flange opening is provided at one end of the inner tank, the preheating tube and the quick-heating tube extend into the flange opening, and the first connecting section, the bending section and the second connecting section are located at the bottom of the inner tank; the flange plate is sealed and connected to the flange opening.

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