Tubular steam electric heating body and instant heating type steam generating device
By using tubular steam electric heating bodies in coffee machines and sweeping robots, using an annular heating chamber and a heating area with a gradually reduced bottom-up power density, the problem of steam unsaturation in the prior art is solved, and dry steam is realized efficient production and low cost design.
Patent Information
- Application Number
- CN202420586745.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-25
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-03-25
AI Technical Summary
Existing coffee machines and sweeping robots are costly and complex in heating steam, and the steam produced often contains moisture, which cannot achieve saturated steam effect, resulting in poor use effect.
Design a tubular steam electric heating body, use the outer tube and the inner tube to form an annular heating chamber, set up a heating area with a gradually reduced power density from the bottom up, generate steam using the area with a high power density and pass through the area with a low power density. Perform secondary heating, combine with a thermostat to prevent dry burning, and use nano rare earth materials to form a heating resistance.
Dryer saturated steam generation is achieved, meeting the needs of use, with a simple structure and low cost.
Smart Images
Figure CN222256476U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of instant heating technology, in particular to a tubular steam electric heating body and an instant heating steam generating device. Background Art
[0002] When the existing coffee machine and the sweeping robot are heated, they achieve the steaming effect by controlling the water intake and the heating power. The coffee machine brews coffee by steam, and the sweeping robot cleans by high-temperature steam.
[0003] However, in actual use, it has high cost and complex structure, and the steam it heats cannot meet the use requirements. The steam often contains water and cannot achieve the effect of saturated steam, resulting in poor use effect. Summary of the invention
[0004] The utility model aims to overcome the above-mentioned disadvantages and provides a tubular steam electric heating body and an instant steam generating device.
[0005] To achieve the above purpose, the specific scheme of the utility model is as follows:
[0006] The utility model provides a tubular steam electric heating body in a first aspect, comprising an outer tube and an inner tube coaxially arranged inside the outer tube, wherein an annular heating chamber is formed between the inner circumferential wall of the outer tube and the outer circumferential wall of the inner tube, the bottom end of the heating chamber is connected to a water inlet structure, and the top end of the heating chamber is connected to a steam outlet structure;
[0007] The outer wall of the outer tube is provided with heating resistors along the length direction of the outer tube, and the heating resistors are provided with two or more heating areas with different power densities, and the power density of the two or more heating areas gradually decreases from bottom to top.
[0008] In the utility model, the heating resistor is further provided with two heating areas with different power densities.
[0009] In the utility model, fixing rings are respectively sealed and connected between the two ends of the outer tube and the two ends of the inner tube, and the outer tube, the inner tube and the two fixing rings together form the heating chamber.
[0010] Furthermore, in the utility model, both ends of the inner tube are bent outward to form flanged portions, and the flanged portions are sealed and connected to the outer tube to form the heating chamber.
[0011] The utility model further provides that the water inlet structure is connected to the lower end of the inner wall of the inner tube, and the steam outlet structure is connected to the upper end of the inner wall of the inner tube.
[0012] The utility model further provides that a first thermostat for detecting the inlet water temperature is arranged at the lower end of the outer wall of the outer tube; and a second thermostat for detecting the steam temperature is arranged at the upper end of the outer wall of the outer tube.
[0013] Furthermore, in the utility model, the outer wall of the outer tube is also provided with a third temperature controller for preventing dry burning.
[0014] Furthermore, in the utility model, the heating resistor is arranged in an S-shaped reciprocating bending manner.
[0015] In the utility model, the heating resistor is formed on the outer peripheral wall of the outer tube by printing and sintering nano rare earth materials.
[0016] The second aspect of the utility model provides an instant steam generating device, comprising the electric heating body as described above.
[0017] The beneficial effects of the utility model are as follows: the utility model utilizes the inner tube and the outer tube to form an annular heating chamber, and arranges a heating area with a power density gradually decreasing from bottom to top on the outer tube, so that the heating area with a large power density is utilized to heat and generate steam, and the heating area with a small power density is utilized to heat the steam, so as to obtain drier saturated steam, meet the use requirements of steam, and have a simple structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a schematic diagram of the structure of a tubular steam electric heating body provided in the first embodiment of the utility model;
[0019] Figure 2 This is an exploded schematic diagram of a tubular steam electric heating body provided in the first embodiment of the present utility model;
[0020] Figure 3 It is a cross-sectional schematic diagram of a tubular steam electric heating body provided in the first embodiment of the utility model;
[0021] Figure 4 It is a front view of a tubular steam electric heating body provided in the first embodiment of the utility model;
[0022] Figure 5 It is a cross-sectional schematic diagram of a tubular steam electric heating body provided in the second embodiment of the present utility model;
[0023] Figure 6 This is a schematic diagram of the structure of the inner tube provided in the second embodiment of the present utility model;
[0024] Explanation of the accompanying drawings: 1. Outer tube; 2. Inner tube; 21. Flanged portion; 3. Heating chamber; 4. Water inlet structure; 5. Steam outlet structure; 6. Heating resistor; 61. Heating area; 7. Fixed ring; 8. First thermostat; 9. Second thermostat; 10. Third thermostat. DETAILED DESCRIPTION
[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the scope of implementation of the present invention is not limited thereto.
[0026] Embodiment 1: Figures 1 to 4 As shown, a tubular steam electric heating body described in this embodiment comprises an outer tube 1 and an inner tube 2 coaxially arranged in the outer tube 1, the outer tube 1 and the inner tube 2 are both made of stainless steel, an annular heating chamber 3 is formed between the inner circumferential wall of the outer tube 1 and the outer circumferential wall of the inner tube 2, the bottom end of the heating chamber 3 is connected to a water inlet structure 4, and the top end of the heating chamber 3 is connected to a steam outlet structure 5;
[0027] The outer wall of the outer tube 1 is provided with heating resistors 6 along the length direction of the outer tube 1. The heating resistors 6 are provided with two or more heating areas 61 with different power densities. The power density of the two or more heating areas 61 gradually decreases from bottom to top.
[0028] Specifically, when the tubular steam electric heating body of this embodiment is actually used, it is installed upright on an external installation position, and the water to be heated is injected into the heating chamber 3 through the water inlet structure 4, and the water to be heated does not fill the heating chamber 3. Then the heating resistor 6 is energized to work, and the heating area 61 with high power density heats the water to be heated in the heating chamber 3, so that the water to be heated boils and generates steam. The heating area 61 with low power density reheats the generated steam to obtain saturated steam, and the saturated steam that has been reheated is discharged from the steam outlet structure 5.
[0029] In this embodiment, the inner tube 2 and the outer tube 1 are used to form an annular heating chamber 3, and a heating area 61 with a power density gradually decreasing from bottom to top is arranged on the outer tube 1, so that the heating area 61 with a large power density is used to heat and generate steam, and the heating area 61 with a small power density is used to heat the steam, so as to obtain drier saturated steam, meet the use requirements of steam, and have a simple structure.
[0030] like Figure 4 As shown, in the tubular steam electric heating body described in this embodiment, preferably, the heating resistor 6 is provided with two heating areas 61 with different power densities. Specifically, a heating area 61 with a large power density is distributed correspondingly in the lower end area of the outer tube 1, and another heating area 61 with a small power density is distributed correspondingly in the upper end area of the outer tube 1.
[0031] like Figures 1 to 3As shown, in the tubular steam electric heating body described in this embodiment, in some embodiments, the two ends of the outer tube 1 and the two ends of the inner tube 2 are respectively sealed with fixing rings 7, and the outer tube 1, the inner tube 2 and the two fixing rings 7 together form the heating chamber 3. Specifically, the fixing ring 7 is made of stainless steel material, so that the fixing ring 7 is easier to combine with the outer tube 1 and the inner tube 2, the structure is more solid, and the sealing is better. The fixing ring 7 is sealed with the outer tube 1 and the inner tube 2 by welding, and the structure is more reliable.
[0032] like Figures 1 to 3 As shown, in the tubular steam electric heating body described in this embodiment, in some embodiments, the water inlet structure 4 is connected to the lower end of the inner wall of the inner tube 2, and the steam outlet structure 5 is connected to the upper end of the inner wall of the inner tube 2. In this embodiment, by arranging the water inlet structure 4 and the steam outlet structure 5 on the inner wall of the inner tube 2, the overall height of the electric heating body is reduced, so as to be suitable for use scenarios with limited installation space.
[0033] like Figure 1 and Figure 4 As shown, in some embodiments, a tubular steam electric heating body described in this embodiment is provided with a first thermostat 8 for detecting the inlet water temperature at the lower end of the outer wall of the outer tube 1. Specifically, the first thermostat 8 is a patch NTC. The inlet water temperature is detected by the first thermostat 8 to control the heating temperature. In some embodiments, a tubular steam electric heating body described in this embodiment is provided with a second thermostat 9 for detecting the steam temperature at the upper end of the outer wall of the outer tube 1. Specifically, the second thermostat 9 is a patch NTC. The steam temperature is detected by the second thermostat 9 to control the steam temperature, thereby obtaining drier steam.
[0034] like Figure 1 and Figure 4 As shown, in the tubular steam electric heating body described in this embodiment, in some embodiments, the outer wall of the outer tube 1 is also provided with a third thermostat 10 for preventing dry burning. Specifically, the third thermostat 10 is a patch NTC. In this embodiment, by providing the third thermostat 10, the working temperature of the entire electric heating body is monitored to prevent the electric heating body from being damaged due to excessive temperature, and the structure is safer to use.
[0035] like Figure 1 , Figure 2 and Figure 4 As shown, in the tubular steam electric heating body described in this embodiment, in some embodiments, the heating resistor 6 is arranged in an S-shaped reciprocating bending manner. Through the above arrangement, the water to be heated can be fully heated to improve the heating efficiency.
[0036] In the tubular steam electric heating body described in this embodiment, in some embodiments, the heating resistor 6 is formed on the outer peripheral wall of the outer tube 1 by printing and sintering nano rare earth materials. Through the above arrangement, the heating resistor 6 is more firmly combined with the outer tube 1, thereby improving thermal stability and thermal conductivity, making the structure volume of the electric heating body smaller, and further adapting to the use scenario with limited installation space.
[0037] Embodiment 2: Figure 5 and Figure 6 As shown, the difference between this embodiment and the first embodiment is that in this embodiment, flanged portions 21 are bent outward at both ends of the inner tube 2, and the flanged portions 21 are sealed and connected to the outer tube 1 to form the heating chamber 3; the rest of the structure is the same as that of the first embodiment. Compared with the structure of the fixing ring 7 in the first embodiment, the flanged portions 21 are provided in this embodiment, so that the overall structure is simpler, the number of parts is reduced, and the assembly is convenient.
[0038] This embodiment also provides an instant steam generating device, comprising the electric heating body as described above. This embodiment adopts the electric heating body as described above, thereby having all the beneficial effects of the electric heating body as described above, which will not be described in detail here.
[0039] The above is only a preferred embodiment of the present utility model, so any equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the protection scope of the present utility model patent application.
Claims
1. A tubular steam electric heating element, characterized in that: It comprises an outer tube and an inner tube coaxially arranged inside the outer tube, an annular heating chamber is formed between the inner circumferential wall of the outer tube and the outer circumferential wall of the inner tube, the bottom end of the heating chamber is connected to a water inlet structure, and the top end of the heating chamber is connected to a steam outlet structure; The outer wall of the outer tube is provided with heating resistors along the length direction of the outer tube, and the heating resistors are provided with two or more heating areas with different power densities, and the power density of the two or more heating areas gradually decreases from bottom to top.
2. A tubular steam electric heating body according to claim 1, characterized in that: The heating resistor is provided with two heating areas with different power densities.
3. A tubular steam electric heating body according to claim 1, characterized in that: The two ends of the outer tube and the two ends of the inner tube are respectively sealed with fixing rings, and the outer tube, the inner tube and the two fixing rings together form the heating chamber.
4. A tubular steam electric heating body according to claim 1, characterized in that: Both ends of the inner tube are bent outward to form flanged portions, and the flanged portions are sealed and connected to the outer tube to form the heating chamber.
5. A tubular steam electric heating body according to claim 1, characterized in that: The water inlet structure is connected to the lower end of the inner wall of the inner tube, and the steam outlet structure is connected to the upper end of the inner wall of the inner tube.
6. A tubular steam electric heating body according to claim 1, characterized in that: A first thermostat for detecting the inlet water temperature is arranged at the lower end of the outer wall of the outer tube; and a second thermostat for detecting the steam temperature is arranged at the upper end of the outer wall of the outer tube.
7. A tubular steam electric heating body according to claim 1, characterized in that: The outer wall of the outer tube is also provided with a third temperature controller for preventing dry burning.
8. A tubular steam electric heating body according to claim 1, characterized in that: The heating resistors are arranged in an S-shaped reciprocating bending manner.
9. A tubular steam electric heating body according to claim 1, characterized in that: The heating resistor is formed on the outer peripheral wall of the outer tube by printing and sintering nano rare earth materials.
10. An instant steam generating device, characterized in that: The invention comprises the electric heating body as claimed in any one of claims 1 to 9.
Citation Information
Cited By
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