Instant electric heating module and heating noise reduction method

Abstract

The invention discloses an instant heating type electric heating module and a heating noise reduction method, the instant heating type electric heating module comprises a heating pipe, the two ends of the heating pipe are connected with a liquid inlet head and a liquid outlet head, a separation pipe is arranged in the heating pipe, and a flow channel cavity communicated with the liquid inlet head and the liquid outlet head is formed between the separation pipe and the heating pipe; a spring arranged on the periphery of the separation pipe in a sleeving mode is arranged in the flow channel cavity. The separation pipe and the spring are arranged in the heating pipe, so that the flowing space of liquid is reduced, the liquid forms spiral flowing liquid flow in the flow channel cavity under the flow guide effect of the spring, the liquid can flow out after cross flowing, the temperature of the heated liquid is more uniform, the temperature difference is smaller, and the heating efficiency is improved. The liquid outlet temperature detection is more accurate, and meanwhile noise generated by liquid heating is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of heating, and in particular to an instant electric heating module. Background Art

[0002] Instant electric heating equipment is a heating device that can quickly heat running water through electronic heating components, and can control water temperature, flow rate, power, etc. through circuits to make the water temperature meet the user's requirements.

[0003] During the heating process, due to the rapid flow rate of the liquid, the water temperature on the side close to the inner wall of the heating tube is higher, while the water temperature on the side far away from the heating tube is relatively low. This results in a large temperature difference in the heated liquid, affecting the detection accuracy of the liquid outlet temperature. At the same time, the bubble bursting sound generated by the liquid heating causes a lot of noise. Summary of the invention

[0004] The object of the present invention is to overcome the above-mentioned disadvantages and provide an instant electric heating module.

[0005] To achieve the above object, the specific scheme of the present invention is as follows:

[0006] An instant electric heating module comprises a heating tube, wherein both ends of the heating tube are connected with a liquid inlet head and a liquid outlet head, a separator tube is arranged inside the heating tube, and a flow channel cavity communicating with the liquid inlet head and the liquid outlet head is formed between the separator tube and the heating tube;

[0007] A spring sleeved on the outer periphery of the separation tube is arranged in the flow channel cavity.

[0008] Optionally, both ends of the separation tube are connected with a blocking piece, and the blocking piece is provided with a flow channel hole that connects the liquid inlet head or the liquid outlet head with the flow channel cavity.

[0009] Optionally, the flow channel holes are evenly distributed along the circumferential direction.

[0010] Optionally, the blocking member includes a first connecting part, a second connecting part and a third connecting part, the first connecting part is connected to the separation tube, the second connecting part is connected to the first connecting part, the third connecting part is connected to the second connecting part, the flow channel hole is arranged in the second connecting part, and the third connecting part abuts against the liquid inlet head or the liquid outlet head.

[0011] Optionally, the outer peripheral wall of the sealing member is provided with a sealing portion that is sealed and abutted against the inner wall of the heating tube, and the peripheral edge of the sealing portion is provided with a notch, and the notch and the inner wall of the heating tube form a connecting hole that connects the flow channel hole and the flow channel cavity.

[0012] Optionally, the heating tube is sealed and connected to the liquid inlet head via a first sealing member.

[0013] Optionally, the heating tube is sealed and connected to the liquid outlet head via a second sealing member.

[0014] Optionally, the heating tube is fixed to the liquid inlet head and the liquid outlet head by welding.

[0015] Optionally, the outer wall of the spring abuts against the inner wall of the heating tube, and the inner wall of the spring abuts against the outer wall of the separation tube.

[0016] The beneficial effects of the present invention are as follows: the present invention reduces the flow space of the liquid by arranging a separation tube and a spring in the heating tube, and under the guiding action of the spring, the liquid forms a spiral flow in the flow channel cavity, so that the liquid can flow out after cross-flow, so that the temperature of the heated liquid is more uniform, the temperature difference is smaller, the liquid outlet temperature detection is more accurate, and the noise generated by liquid heating is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a cross-sectional schematic diagram of an instant electric heating module provided in Embodiment 1 of the present invention;

[0018] Figure 2 is a cross-sectional schematic diagram of an instant electric heating module provided in Embodiment 2 of the present invention;

[0019] Figure 3 is a schematic structural diagram of a blocking member of a first structural mode provided by an embodiment of the present invention;

[0020] Figure 4 is a schematic structural diagram of a separator tube provided in an embodiment of the present invention;

[0021] Figure 5 is a cross-sectional schematic diagram of an instant electric heating module using a blocking member of the second structural manner provided by an embodiment of the present invention;

[0022] Figure 6 is a schematic structural diagram of a blocking member of a second structural mode provided by an embodiment of the present invention;

[0023] Figure 7 1 is a cross-sectional schematic diagram of an instant electric heating module using two structural blocking members provided by an embodiment of the present invention;

[0024] Figure 8 is a cross-sectional schematic diagram of an instant electric heating module provided by an embodiment of the present invention when the blocking member is not in contact with the liquid inlet head or the liquid outlet head;

[0025] Explanation of the reference numerals in the accompanying drawings: 1. Heating tube; 2. Liquid inlet head; 21. Liquid inlet through hole; 3. Liquid outlet head; 31. Liquid outlet through hole; 4. Partition tube; 41. Conical structure; 5. Sealing piece; 51. First connecting part; 52. Second connecting part; 53. Third connecting part; 54. Flow channel hole; 55. Sealing part; 56. Notch; 57. Spiral drainage channel; 6. Flow channel cavity; 7. Spring; 8. First sealing member; 9. Second sealing member. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the implementation scope of the present invention is not limited thereto.

[0027] Embodiment 1: Figures 1 to 8 As shown, an instant electric heating module described in this embodiment is applied to electric heating equipment such as instant hot water dispensers, faucets, and wall-mounted boilers. The instant electric heating module includes a heating tube 1, and the two ends of the heating tube 1 are connected to a liquid inlet head 2 and a liquid outlet head 3. A separation tube 4 is provided in the heating tube 1, and a flow channel cavity 6 connected to the liquid inlet head 2 and the liquid outlet head 3 is formed between the separation tube 4 and the heating tube 1; a spring 7 sleeved on the outer periphery of the separation tube 4 is provided in the flow channel cavity 6. Specifically, the liquid inlet head 2 is provided with a liquid inlet through hole 21, and the liquid outlet head 3 is provided with a liquid outlet through hole 31.

[0028] During actual use, the liquid to be heated flows into the flow channel cavity 6 through the liquid inlet head 2, the heating tube 1 heats the liquid to be heated flowing through the flow channel cavity 6, and the heated liquid flows out through the liquid outlet head 3. At the same time, when the liquid to be heated flows through the flow channel cavity 6, the spring 7 guides the liquid to be heated, so that the liquid to be heated forms a liquid flow that flows in a spiral manner along the spring 7, and a liquid flow that flows along the length direction of the flow channel cavity 6 after the flow around the spring 7, thereby reducing the bubble bursting sound generated by the liquid during the heating process, so that the heated liquid can cross-flow in the flow channel cavity 6 and then flow out from the liquid outlet head 3.

[0029] In this embodiment, a partition tube 4 and a spring 7 are arranged in the heating tube 1, thereby reducing the flow space of the liquid. Under the guiding action of the spring 7, the liquid forms a spiral flow in the flow channel cavity 6, so that the liquid can flow out after cross-flow, so that the temperature of the heated liquid is more uniform and the temperature difference is smaller, so that the outlet liquid temperature detection is more accurate, and the noise generated by liquid heating is reduced.

[0030] In this embodiment, one end of the separation tube 4 is arranged to abut against the liquid inlet head 2 or the liquid outlet head 3; such an arrangement enables the installation of the separation tube 4 to be firm. In this embodiment, the two ends of the spring 7 are respectively abutted against the liquid inlet head 2 and the liquid outlet head 3, so that the spring 7 is firmly placed in the flow channel cavity 6.

[0031] Of course, the two ends of the separation tube 4 can also be arranged to abut against the liquid inlet head 2 and the liquid outlet head 3 respectively, so that the installation of the separation tube 4 is more secure. In actual use, it can be arranged according to actual design requirements. Figures 1 to 3 As shown, both ends of the separation tube 4 are connected with a plugging member 5, and the plugging member 5 is sealed against the liquid inlet head 2 or the liquid outlet head 3, and the plugging member 5 is provided with a flow channel hole 54 that connects the liquid inlet head 2 or the liquid outlet head 3 with the flow channel cavity 6. In this embodiment, the two ends of the spring 7 are respectively abutted against the plugging member 5. Specifically, the plugging member 5 close to the liquid inlet head 2 is sealed against the liquid inlet head 2, and the plugging member 5 close to the liquid outlet head 3 is sealed against the liquid outlet head 3; in actual use, the liquid to be heated flows into the liquid inlet through hole 21 of the liquid inlet head 2, and then flows into the flow channel cavity 6 through the various flow channel holes 54 on the plugging member 5; the heated liquid flows out from the flow channel cavity 6 through the various flow channel holes 54 on the plugging member 5 to be discharged from the liquid outlet through hole 31 of the liquid outlet head 3. In this embodiment, the plugging member 5 is provided to facilitate the installation of the separation tube 4, and the structure is more stable.

[0032] Of course, this embodiment also has another implementation mode, such as Figure 8 As shown, the two ends of the separation tube 4 are not in contact with the liquid inlet head 2 and the liquid outlet head 3, the sealing member 5 is not in contact with the liquid inlet head 2 and the liquid outlet head 3, the separation tube 4 is supported in the heating tube 1 by the sealing member 5, and the outer peripheral wall of the sealing member 5 is in sealing contact with the inner wall of the heating tube 1.

[0033] The embodiments of the present invention further include: Figure 3 As shown, the flow channel holes 54 are evenly distributed along the circumference. In this embodiment, the flow channel holes 54 are arranged along the circumference so that the liquid can flow smoothly in the liquid inlet head 2, the flow channel cavity 6, and the liquid outlet head 3, so that the heated liquid can flow out of the flow channel cavity 6 in time.

[0034] The embodiments of the present invention further include: Figure 1 As shown, the heating tube 1 is sealed and connected to the liquid inlet head 2 through the first sealing member 8; the first sealing member 8 is provided to ensure the sealing between the heating tube 1 and the liquid inlet head 2, and the sealing performance is better. Specifically, the liquid inlet head 2 is provided with a first groove, and the first sealing member 8 is embedded in the first groove. In this embodiment, the first groove is provided to facilitate the installation of the first sealing member 8, and the sealing performance is better. Preferably, the first sealing member 8 is a sealing sleeve.

[0035] The embodiments of the present invention further include: Figure 1As shown, the heating tube 1 is sealed and connected to the liquid outlet head 3 through the second sealing member 9. The second sealing member 9 is provided to ensure the sealing between the heating tube 1 and the liquid outlet head 3, and the sealing performance is better. Specifically, the liquid outlet head 3 is provided with a second groove, and the second sealing member 9 is embedded in the second groove. In this embodiment, the second groove is provided to facilitate the installation of the second sealing member 9, and the sealing performance is better. Preferably, the second sealing member 9 is a sealing sleeve.

[0036] In this embodiment, the first sealing member 8 and the second sealing member 9 are provided to achieve sealing between the heating tube 1 and the liquid inlet head 2 and the liquid outlet head 3;

[0037] Of course, in this embodiment, the liquid inlet head 2, the liquid outlet head 3 and the heating tube 1 can also be fixedly connected by welding, such as by ultrasonic welding, laser welding or other welding methods, to achieve a firm connection and sealing between the three.

[0038] The embodiments of the present invention further include: Figure 3 As shown, this embodiment provides a sealing member 5 of a first structural type, wherein the sealing member 5 includes a first connecting portion 51, a second connecting portion 52 and a third connecting portion 53, wherein the second connecting portion 52 is connected to the first connecting portion 51, the third connecting portion 53 is connected to the second connecting portion 52, the flow channel hole 54 is provided in the second connecting portion 52, and the third connecting portion 53 abuts against the liquid inlet head 2 or the liquid outlet head 3.

[0039] Specifically, the first connection part 51 is a cap structure, the second connection part 52 is a disc structure, and the third connection part 53 is a circular ring structure. The second connection part 52 is connected to the periphery of the first connection part 51, and the third connection part 53 is connected to the periphery of the second connection part 52; preferably, the first connection part 51, the second connection part 52 and the third connection part 53 are integrally formed, and the structure is more solid; the first connection part 51 is connected to the heating tube 1, the third connection part 53 is in contact with the inner wall of the heating tube 1, and the end face of the third connection part 53 is in contact with the first sealing member 8; in this embodiment, the first connection part 51 is provided to facilitate the assembly of the sealing member 5 and the heating tube 1, the second connection part 52 is provided to facilitate the provision of the flow channel hole 54, and the third connection part 53 is provided to facilitate the cooperation of the sealing member 5 with the heating tube 1 and the first sealing member 8.

[0040] This embodiment also provides a second structural blocking member 5, such as Figures 5 to 7As shown: the outer peripheral wall of the plugging member 5 is provided with a plugging portion 55 that is sealed against the inner wall of the heating tube 1, and the peripheral edge of the plugging portion 55 is provided with a notch 56, and the notch 56 and the inner wall of the heating tube 1 form a connecting hole that connects the flow channel hole with the flow channel cavity. Specifically, the two ends of the spring 7 are respectively in contact with the plugging portion 55. By setting the plugging portion 55, the stability of the spring 7 is facilitated. The flow channel hole 54 is arranged along the axial direction of the plugging member 5, one end of the flow channel hole 54 is connected with the liquid inlet through hole 21 or the liquid outlet through hole 31, and the other end of the flow channel hole 54 is connected with the connecting hole after penetrating the outer peripheral wall of the plugging member 5, so that the liquid to be heated enters the flow channel hole 54 through the liquid inlet through hole 21, then enters the connecting hole from the flow channel hole 54, and then enters the flow channel cavity 6 from the connecting hole for heating; the heated liquid enters the flow channel hole 54 from the flow channel cavity 6 through the connecting hole, and then enters the liquid outlet through hole 31 from the flow channel hole 54 and flows out.

[0041] In this embodiment, Figure 6 As shown, preferably, the outer peripheral wall of the blocking member 5 is provided with a spiral drainage channel 57, and both ends of the spiral drainage channel 57 are respectively connected to the flow channel hole 54 and the connecting hole.

[0042] like Figure 7 As shown, of course, the present embodiment can also combine the sealing members 5 of the two structural modes and can be arranged according to actual design requirements; for example, the sealing member 5 of the first structural mode is arranged at one end of the separation tube 4 close to the liquid inlet head 2, and the sealing member 5 of the second structural mode is arranged at one end of the separation tube 4 close to the liquid outlet head 3.

[0043] Of course, the sealing member 5 may also be provided in other structural forms, which are not listed here, and those skilled in the art may make the arrangements according to actual design requirements.

[0044] The embodiments of the present invention further include: Figure 1 and Figure 4 As shown, at least one end of the separation tube 4 is provided with a conical structure 41. Preferably, the conical structure 41 is an inner cone structure. In this embodiment, preferably, both ends of the separation tube 4 are provided with a conical structure 41. In this embodiment, preferably, the conical structure 41 includes an integrally formed cone portion and a connecting portion, and the connecting portion is connected to the separation tube 4 through the cone portion. In this embodiment, by providing the conical structure 41, the liquid flowing into the flow channel cavity 6 is buffered, and the heated liquid flowing out of the flow channel cavity 6 to the liquid outlet head 3 is buffered, thereby reducing the sound of boiling water when the liquid flows through the flow channel cavity 6, reducing the noise generated when the liquid is heated, and further improving the user experience.

[0045] In the embodiment of the present invention, the thickness d of the flow channel cavity 6 is equal to half of the difference between the inner diameter D1 of the heating tube 1 and the outer diameter D2 of the separation tube 4, where D1 is the inner diameter of the heating tube 1 and D2 is the outer diameter of the separation tube 4, i.e., d = (D1-D2) / 2; the wire diameter L of the spring 7 is smaller than the thickness d of the flow channel cavity 6, i.e., L < d. This arrangement reduces the space for the liquid to flow through the flow channel cavity 6, improves the liquid heating efficiency, and is also conducive to reducing the noise generated by the liquid during the heating process, thereby improving the user experience.

[0046] Embodiment 2: Figures 2 to 8 As shown, the difference between this embodiment and the first embodiment is that the outer wall of the spring 7 abuts against the inner wall of the heating tube 1, and the inner wall of the spring 7 abuts against the outer wall of the separator tube 4; that is, the wire diameter L of the spring 7 is equal to the thickness d of the flow channel cavity 6, that is, L=d, and the remaining structure is the same as that of the first embodiment and will not be repeated here; in this way, the spring 7, the heating tube 1 and the separator tube 4 cooperate to form a spiral flow channel, which further reduces the space of the flow channel cavity 6, so that the liquid entering the flow channel cavity 6 flows along the spiral flow channel to form a spiral flow of liquid, so that the liquid cross-flows more fully in the flow channel cavity 6, and the heating is more sufficient and uniform, which further improves the detection accuracy of the outlet liquid temperature, and the temperature difference is smaller and the heating noise is lower.

[0047] The above is only a preferred embodiment of the present invention. Therefore, any equivalent changes or modifications made according to the structure, characteristics and principles described in the scope of the patent application of the present invention are included in the protection scope of the patent application of the present invention.

Claims

1. An instant electric heating module, characterized in that: It comprises a heating tube, wherein both ends of the heating tube are connected with a liquid inlet head and a liquid outlet head, a separator tube is arranged inside the heating tube, and a flow channel cavity communicating with the liquid inlet head and the liquid outlet head is formed between the separator tube and the heating tube; A spring sleeved on the outer periphery of the separation tube is arranged in the flow channel cavity.

2. The instant electric heating module according to claim 1, characterized in that: Both ends of the separation tube are connected with a blocking piece, and the blocking piece is provided with a flow channel hole that enables the liquid inlet head or the liquid outlet head to communicate with the flow channel cavity.

3. The instant electric heating module according to claim 2, characterized in that: The flow channel holes are evenly distributed along the circumferential direction.

4. The instant electric heating module according to claim 3, characterized in that: The blocking member includes a first connecting part, a second connecting part and a third connecting part, the first connecting part is connected to the separation tube, the second connecting part is connected to the first connecting part, the third connecting part is connected to the second connecting part, the flow channel hole is arranged in the second connecting part, and the third connecting part abuts against the liquid inlet head or the liquid outlet head.

5. The instant electric heating module according to claim 2, characterized in that: The outer peripheral wall of the blocking piece is provided with a blocking portion that is sealed against the inner wall of the heating tube, and the peripheral edge of the blocking portion is provided with a notch, and the notch and the inner wall of the heating tube form a connecting hole that connects the flow channel hole with the flow channel cavity.

6. The instant electric heating module according to claim 1, characterized in that: The heating tube is sealed and connected to the liquid inlet head through a first sealing member.

7. The instant electric heating module according to claim 1, characterized in that: The heating tube is sealed and connected to the liquid outlet head via a second sealing member.

8. The instant electric heating module according to claim 1, characterized in that: The heating tube is welded and fixed to the liquid inlet head and the liquid outlet head.

9. An instant electric heating module according to any one of claims 1 to 8, characterized in that: The outer wall of the spring abuts against the inner wall of the heating tube, and the inner wall of the spring abuts against the outer wall of the partition tube.

10. A method for heating and noise reduction using the instant electric heating module according to any one of claims 1 to 9, characterized in that: The steps include: S100: the liquid to be heated flows into the flow channel cavity through the liquid inlet head; S200: The heating tube heats the liquid to be heated flowing through the flow channel cavity; S300: When the liquid to be heated flows through the flow channel cavity, the spring guides the liquid to be heated so that the liquid to be heated forms a liquid flow that flows spirally along the spring, so that the liquid to be heated cross-flows in the flow channel cavity and then flows out from the liquid outlet head.

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