Three-phase electric heating device composed of three single-phase resistance heaters
By using a single-phase resistance heater with a separate chamber in a three-phase electric heating device, the problem of hydrogen accumulation and explosion caused by electrode rod heating was solved, resulting in a smaller size, higher pressure resistance, and faster heating effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-10
- Publication Date
- 2026-04-10
AI Technical Summary
Existing three-phase electric heating devices using electrode rods pose a risk of hydrogen accumulation and explosion, especially when heating electrolytes.
Three single-phase resistance heaters are installed in three independent housings. The medium is heated by resistance heating, avoiding electrolysis. The use of single-phase resistance heaters eliminates the need for electrolytes, and each housing contains only one heater, reducing the safety distance requirement.
It reduces the size and processing difficulty of the shell, improves the pressure resistance, avoids the risk of hydrogen explosion, and makes the medium heating faster and more uniform.
Smart Images
Figure CN224111331U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of electric heating equipment, especially to a three-phase electric heating device composed of three single-phase resistance heaters. BACKGROUND
[0002] The current heating device based on three-phase electricity, as shown in the patent announcement document CN214745632U, uses three electrode rods (also known as phase electrodes) to heat the medium by taking the medium as the conductor, and converts electrical energy into heat energy. This electric heating device must use conductive electrolyte as boiler water to utilize the conductive heating of the boiler water. However, during the heating process, the phenomenon of electrolytic water is inevitable due to the alternating current of power frequency, so the accumulation of hydrogen gas in the shell is inevitable. Once the concentration of hydrogen gas reaches a certain value, hydrogen explosion hazards may occur. SUMMARY
[0003] The utility model provides a three-phase electric heating device composed of three single-phase resistance heaters to solve the above problems. The medium can not be electrolyte, and the unidirectional resistance heater does not discharge water during the heating process of water, so the phenomenon of electrolytic hydrogen gas generation does not occur, reducing the probability of explosion.
[0004] The technical scheme adopted by the utility model is as follows:
[0005] A three-phase electric heating device composed of three single-phase resistance heaters, including a first shell, a second shell, a third shell, a first unidirectional resistance heater, a second unidirectional resistance heater, and a third unidirectional resistance heater. The first unidirectional resistance heater is arranged in the first shell, the second unidirectional resistance heater is arranged in the second shell, and the third unidirectional resistance heater is arranged in the third shell. The first shell, the second shell, and the third shell are in an insulating and isolated state with the first unidirectional resistance heater, the second unidirectional resistance heater, and the third unidirectional resistance heater, respectively.
[0006] In the electric heating device, the first shell, the second shell and the third shell are adopted, and each shell is provided with a one-way resistance heater, i.e., the first one-way resistance heater, the second one-way resistance heater and the third one-way resistance heater. The first one-way resistance heater is used for heating the medium in the first shell, the second one-way resistance heater is used for heating the medium in the second shell, and the third one-way resistance heater is used for heating the medium in the third shell. The first one-way resistance heater, the second one-way resistance heater and the third one-way resistance heater are connected with A / B / C three-phase respectively, and the first one-way resistance heater, the second one-way resistance heater and the third one-way resistance heater are turned on to synchronously heat the medium in the first shell, the second shell and the third shell.
[0007] In the electric heating device, the one-way resistance heater is adopted instead of the electrode rod. The one-way resistance heater generates heat through resistance, and the process of heat generation of the one-way resistance heater does not need to rely on electrolyte. The medium (generally water, and can also be molten salt) is heated through resistance heating. The medium can not be electrolyte, and the one-way resistance heater will not discharge water during the process of heating water, and the phenomenon of electrolysis to generate hydrogen gas will not occur, thereby reducing the probability of explosion. In addition, under the same voltage, the safety distance between the one-way resistance heater and the shell is smaller than the safety distance between the electrode rod and the shell. Since only one one-way resistance heater is arranged in one shell, only the safety distance between the one-way resistance heater and the shell needs to be met, so the volume of the shell can be greatly reduced. Under the same pressure strength, the requirement for the wall thickness of the shell is also greatly reduced, so not only the processing difficulty of the shell is reduced, but also the weight of the whole equipment is reduced. Under the same wall thickness, stronger pressure resistance can be achieved.
[0008] In the heating device, only one one-way resistance heater is arranged in one shell, so that the area ratio of the one-way resistance heater to the unit shell area is relatively high, and the area ratio of the medium is relatively small, so the medium can be heated at a faster speed.
[0009] In summary, the device arranges one one-way resistance heater in each of the three shells to achieve separate cavity heating, reduce the processing difficulty of the shell, have higher pressure resistance, and heat the medium faster.
[0010] Optionally, the first shell, the second shell and the third shell have consistent structure and size, and the first shell is in a cylindrical shape.
[0011] Optionally, the device further comprises a feeding pipe and a discharging pipe, and the first shell, the second shell and the third shell are connected with the feeding pipe and the discharging pipe.
[0012] Optionally, an end cover is further included, and the first shell, the second shell and the third shell are provided with the end cover.
[0013] Optionally, the first shell, the second shell and the third shell are multiple, and the number of the first shell, the second shell and the third shell is equal, one first one-way resistance heater is arranged in each first shell, one second one-way resistance heater is arranged in each second shell, and one third one-way resistance heater is arranged in each third shell.
[0014] Specifically, each first shell, second shell and third shell in the device forms a heating unit, and each heating unit can heat the medium.
[0015] Optionally, the first one-way resistance heater, the second one-way resistance heater and the third one-way resistance heater are consistent in shape and size.
[0016] Optionally, the first one-way resistance heater is a tubular first one-way resistance heater.
[0017] Optionally, a rack table is further included, and the first shell, the second shell and the third shell are arranged on the rack table.
[0018] The device has the advantages that the medium can be heated by resistance heating, the medium can not be an electrolyte, the one-way resistance heater does not discharge water during heating of the water, and the phenomenon of electrolysis to generate hydrogen gas does not occur, thereby reducing the probability of explosion. BRIEF DESCRIPTION OF DRAWINGS
[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art according to these drawings.
[0020] Figure 1 is a structural schematic diagram of a three-phase electric heating device composed of three single-phase resistance heaters;
[0021] Figure 2 is a working principle schematic diagram of a three-phase electric heating device composed of three single-phase resistance heaters.
[0022] In the drawings, the reference signs are as follows: 1, rack table; 2, feeding pipe; 3, end cover; 401, first shell; 402, second shell; 403, third shell; 5, discharging pipe; 601, first one-way resistance heater; 602, second one-way resistance heater; 603, third one-way resistance heater. DETAILED DESCRIPTION
[0023] In order to make the above objectives, features and advantages of the present application more apparent, a detailed description of the specific embodiments of the present application will be given below with reference to the accompanying drawings.
[0024] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one skilled in the art that the present application can be practiced without the specific details given in this description. In other instances, well-known methods, procedures and devices have not been described in detail so as not to unnecessarily obscure aspects of the present application.
[0025] In the description of the present application, it should be noted that the terms used herein are merely for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. For the purpose of description, the dimensions of the parts shown in the drawings are not drawn in accordance with the actual proportional relationship. The techniques, methods and devices known to those skilled in the relevant art can not be discussed in detail, but in appropriate cases, the techniques, methods and devices should be considered as part of the authorized description. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.
[0026] As shown in the accompanying Figure 1 and the accompanying Figure 2 A three-phase electric heating device composed of three single-phase resistance heaters, as shown in the accompanying drawings, comprises a first housing 401, a second housing 402, a third housing 403, a first one-way resistance heater 601, a second one-way resistance heater 602 and a third one-way resistance heater 603, the first one-way resistance heater 601 is arranged in the first housing 401, the second one-way resistance heater 602 is arranged in the second housing 402, and the third one-way resistance heater 603 is arranged in the third housing 403, the resistance value and rated power of the first one-way resistance heater 601, the second one-way resistance heater 602 and the third one-way resistance heater 603 are equal, the first housing 401, the second housing 402 and the third housing 403 are in an insulating and isolating state between the first one-way resistance heater 601, the second one-way resistance heater 602 and the third one-way resistance heater 603, respectively, the first one-way resistance heater 601, the second one-way resistance heater 602 and the third one-way resistance heater 603 are connected to A\B\C three-phase respectively, and A\B\C adopts Y-type connection.
[0027] In the electric heating device, the first shell 401, the second shell 402 and the third shell 403 are adopted, and each shell is provided with a one-way resistance heater, that is, the first one-way resistance heater 601, the second one-way resistance heater 602 and the third one-way resistance heater 603, the first one-way resistance heater 601 is used for heating the medium in the first shell 401, the second one-way resistance heater 602 is used for heating the medium in the second shell 402, and the third one-way resistance heater 603 is used for heating the medium in the third shell 403. The first one-way resistance heater 601, the second one-way resistance heater 602 and the third one-way resistance heater 603 are connected with A / B / C three-phase respectively, and the first one-way resistance heater 601, the second one-way resistance heater 602 and the third one-way resistance heater 603 are turned on to heat the medium in the first shell 401, the second shell 402 and the third shell 403 synchronously.
[0028] In the electric heating device, a one-way resistance heater is adopted instead of an electrode rod, the one-way resistance heater generates heat through resistance, and the process of heat generation of the one-way resistance heater does not need to rely on an electrolyte. The medium (generally water, but also molten salt) is heated by resistance heating, and the medium can not be an electrolyte. In the process of heating water, the one-way resistance heater does not discharge water, and the phenomenon of electrolysis to produce hydrogen gas does not occur, thereby reducing the probability of explosion. The process of heat generation of the one-way resistance heater does not need to rely on an electrolyte. In addition, under the same voltage, the safety distance between the one-way resistance heater and the shell is smaller than the safety distance between the electrode rod and the shell. At the same time, since only one one-way resistance heater is arranged in one shell of the device, only the safety distance between the one-way resistance heater and the shell needs to be satisfied, and the safety distance between phases does not need to be considered. Therefore, the volume of the shell can be greatly reduced, and the wall thickness requirement of the shell is also greatly reduced under the same pressure strength. In this way, not only the processing difficulty of the shell is reduced, but also the weight of the whole equipment is reduced. And under the same wall thickness, stronger pressure resistance can be achieved.
[0029] At the same time, in the heating device, only one one-way resistance heater is arranged in one shell, so that the area ratio of the one-way resistance heater to the unit shell area is relatively high, and the area ratio of the medium is relatively small. In this way, the medium can be heated at a faster speed, and the heating of the medium is more uniform.
[0030] In summary, by arranging one one-way resistance heater in each of the three shells, the device realizes separate cavity heating, reduces the processing difficulty of the shell, has higher pressure resistance, and heats the medium faster.
[0031] As shown in FIG. 1, the electric heating device comprises a first shell 401, a second shell 402 and a third shell 403. Figure 1 As shown in FIG. 1, the electric heating device comprises a first shell 401, a second shell 402 and a third shell 403. Figure 2As shown, the first shell 401, the second shell 402 and the third shell 403 are consistent in structure and size, and the first shell 401 is cylindrical.
[0032] As shown in the accompanying drawings, the first shell 401, the second shell 402 and the third shell 403 are consistent in structure and size, and the first shell 401 is cylindrical. Figure 1 As shown in the accompanying drawings, the first shell 401, the second shell 402 and the third shell 403 are consistent in structure and size, and the first shell 401 is cylindrical. Figure 2 As shown, the first shell 401, the second shell 402 and the third shell 403 are consistent in structure and size, and the first shell 401 is cylindrical.
[0033] As shown, the first shell 401, the second shell 402 and the third shell 403 are consistent in structure and size, and the first shell 401 is cylindrical.
[0034] As shown, the first shell 401, the second shell 402 and the third shell 403 are consistent in structure and size, and the first shell 401 is cylindrical. Figure 1 As shown, the first shell 401, the second shell 402 and the third shell 403 are consistent in structure and size, and the first shell 401 is cylindrical. Figure 2 As shown, the first shell 401, the second shell 402 and the third shell 403 are consistent in structure and size, and the first shell 401 is cylindrical.
[0035] As shown, the first shell 401, the second shell 402 and the third shell 403 are consistent in structure and size, and the first shell 401 is cylindrical. Figure 1 As shown, the first shell 401, the second shell 402 and the third shell 403 are consistent in structure and size, and the first shell 401 is cylindrical. Figure 2 As shown, the first shell 401, the second shell 402 and the third shell 403 are consistent in structure and size, and the first shell 401 is cylindrical.
[0036] As shown, the first shell 401, the second shell 402 and the third shell 403 are consistent in structure and size, and the first shell 401 is cylindrical. Figure 1 As shown, the first shell 401, the second shell 402 and the third shell 403 are consistent in structure and size, and the first shell 401 is cylindrical.
[0037] As shown, the first shell 401, the second shell 402 and the third shell 403 are consistent in structure and size, and the first shell 401 is cylindrical.
[0038] As shown, the first shell 401, the second shell 402 and the third shell 403 are consistent in structure and size, and the first shell 401 is cylindrical. Figure 1 As shown, the first shell 401, the second shell 402 and the third shell 403 are consistent in structure and size, and the first shell 401 is cylindrical. Figure 2 As shown, the first shell 401, the second shell 402 and the third shell 403 are consistent in structure and size, and the first shell 401 is cylindrical.
[0039] The medium heated in the device can be a liquid (including but not limited to pure water), a molten salt, or steam.
[0040] As shown in FIG. 1, the first shell 401, the second shell 402, and the third shell 403 are arranged in parallel. Figure 1 As shown in FIG. 1, the first shell 401, the second shell 402, and the third shell 403 are arranged in parallel. Figure 2 As shown in FIG. 1, the medium in the first shell 401, the medium in the second shell 402, and the medium in the third shell 403 can be the same or different.
[0041] As shown in FIG. 1, the first shell 401, the second shell 402, and the third shell 403 are arranged in parallel. Figure 1 As shown in FIG. 1, the first shell 401, the second shell 402, and the third shell 403 are arranged in parallel. Figure 2 As shown in FIG. 1, the first shell 401, the second shell 402, and the third shell 403 are arranged in parallel.
[0042] As shown in FIG. 1, the first shell 401, the second shell 402, and the third shell 403 are arranged in parallel. Figure 1 As shown in FIG. 1, the first shell 401, the second shell 402, and the third shell 403 are arranged in parallel. Figure 2 As shown in FIG. 1, the first shell 401, the second shell 402, and the third shell 403 are arranged in parallel.
[0043] As shown in FIG. 1, the first shell 401, the second shell 402, and the third shell 403 are arranged in parallel. Figure 2 As shown in FIG. 1, the first shell 401, the second shell 402, and the third shell 403 are arranged in parallel.
[0044] The above-described embodiments only express some embodiments of the present application, and the description is relatively specific and detailed, but it should not be understood as limiting the scope of the present application. It should be noted that for those skilled in the art, the technical solutions recorded in the above-described embodiments can be modified, or some technical features can be replaced. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. A three-phase electric heating device consisting of three single-phase electric resistance heaters, characterized in that, The application relates to a one-way resistance heater, which comprises a first shell, a second shell, a third shell, a first one-way resistance heater, a second one-way resistance heater and a third one-way resistance heater, the first one-way resistance heater is arranged in the first shell, the second one-way resistance heater is arranged in the second shell, the third one-way resistance heater is arranged in the third shell, and the first shell, the second shell and the third shell are in an insulation isolation state with the first one-way resistance heater, the second one-way resistance heater and the third one-way resistance heater.
2. A three-phase electric heating device consisting of three single-phase electric resistance heaters according to claim 1, characterized in that, The first shell, the second shell and the third shell are consistent in structure and size.
3. A three-phase electric heating device consisting of three single-phase electric resistance heaters according to claim 1, characterized in that, The first shell, the second shell and the third shell are provided with a feeding pipe and a discharging pipe.
4. A three-phase electric heating device consisting of three single-phase electric resistance heaters according to claim 1, characterized in that, The first one-way resistance heater is matched with the first shell through an end cover.
5. A three-phase electric heating device consisting of three single-phase electric resistance heaters according to claim 1, characterized in that, The first shell, the second shell and the third shell are equal in number, each first shell is provided with a first one-way resistance heater, each second shell is provided with a second one-way resistance heater, and each third shell is provided with a third one-way resistance heater.
6. A three-phase electric heating device consisting of three single-phase electric resistance heaters according to claim 1, characterized in that, The first one-way resistance heater, the second one-way resistance heater and the third one-way resistance heater are consistent in shape and size.
7. A three-phase electric heating device consisting of three single-phase electric resistance heaters according to claim 6, characterized in that, The first one-way resistance heater is a tubular first one-way resistance heater.
8. A three-phase electric heating device consisting of three single-phase electric resistance heaters according to claim 1, characterized in that, The first shell, the second shell and the third shell are arranged on a rack table.
Citation Information
Patent Citations
Electrode boiler
CN214745632U