Corrosion-resistant and durable instant-heating fluid heating device

Abstract

The utility model discloses a corrosion-resistant and durable instant-heating fluid heating device which comprises an outer pipe shell with a water inlet and a water outlet and a heating rod assembly extending into the outer pipe shell, and a heating wire is wound on the heating rod assembly. The heating wire is wound on the heating rod assembly to form a high-power heating area and a low-power heating area; the high-power heating area is close to the water inlet, and the low-power heating area is close to the water outlet; the winding density of the heating wire in the high-power heating area is larger than that of the heating wire in the low-power heating area. According to the utility model, while the overall higher heating power performance is maintained, the winding density of the heating wire at the water outlet is reduced, the heat dissipation requirement of the part of the heating wire is reduced, even if the part of the heating wire is at the water outlet with higher fluid temperature, the effective alternate heat dissipation effect can be achieved, the heating wire is not easy to fuse and corrode, and the service life of the heating wire is prolonged. And the service life of the instant fluid heating device is effectively prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to instant fluid heating structure technical field, especially instant fluid heating device of durable corrosion resistance. BACKGROUND

[0002] Instant fluid heating device, it is a kind of electric heating device that the fluid that can be heated quickly, is widely used in water heater, water dispenser, coffee machine and the equipment needing output high temperature fluid of various kinds.For this kind of electric heater, it usually includes the outer pipe shell with water inlet and water outlet, the heating rod assembly that extends into outer pipe shell, heating wire is wound on heating rod assembly, and fluid in outer pipe shell is quickly heated by heating wire.For the effect of instant heating, the heating power of heating wire is larger, and fluid is heated, and fluid is also synchronized to heating wire for heat dissipation;However, the fluid temperature near water outlet is higher, and the heat of heating wire cannot be quickly dissipated at this time;During long-term use, the heating wire at this place has the fault of melting and corrosion.Therefore, it needs to be further improved. SUMMARY

[0003] The utility model at least solves one of the technical problems in the prior art.The utility model provides instant fluid heating device of durable corrosion resistance.

[0004] The technical scheme adopted by one embodiment of the utility model to solve its technical problem is as follows: instant fluid heating device of durable corrosion resistance, including the outer pipe shell with water inlet and water outlet, the heating rod assembly that extends into outer pipe shell, heating wire is wound on heating rod assembly;

[0005] The heating wire is wound on the heating rod assembly to form high-power heating area and low-power heating area;The high-power heating area is arranged close to the water inlet, and the low-power heating area is arranged close to the water outlet;The winding density of the heating wire of the high-power heating area is greater than the winding density of the heating wire of the low-power heating area.

[0006] Optionally, the outer pipe shell and heating pipe assembly are straight pipes, and the heating pipe assembly is coincident with the center line of the outer pipe shell.

[0007] Optionally, the water inlet is located below the outer pipe shell;The water outlet is located above the outer pipe shell.

[0008] Optionally, the heating rod assembly includes positioning ceramic core and heating rod shell;The heating wire is wound on the outer side of the positioning ceramic core, and the heating rod shell is wrapped on the outer side of the positioning ceramic core and heating wire.

[0009] Optionally, the heating rod shell is formed by rolling or forging of magnesium oxide powder.

[0010] Optionally, the heating wire winding density of the high-power heating area is twice that of the low-power heating area.

[0011] Optionally, the heating wire winding density of the heating rod assembly increases from the water inlet end to the water outlet end.

[0012] Optionally, the outer tube shell is made of stainless steel material.

[0013] The beneficial effects of the utility model are as follows: the heating wire is wound to form a high-power heating area and a low-power heating area in the heating rod assembly, the winding densities of the heating wires in the two heating areas are different, the winding density of the heating wire at the water outlet is reduced while maintaining the overall high heating power performance, the heat dissipation demand of the part of the heating wire is reduced, even at the water outlet with high fluid temperature, the effective heat exchange and heat dissipation effect can be achieved, the heating wire is not prone to melting and corrosion failure, and the service life of the instant fluid heating device is effectively improved.

[0014] In order to make the above-mentioned purpose, characteristics and advantages of the utility model more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0015] The above and / or additional aspects and advantages of the utility model will become apparent and easy to understand from the description of the embodiments combined with the following drawings, in which:

[0016] Figure 1 It is a structure schematic view of the instant fluid heating device of the utility model;

[0017] Figure 2 It is Figure 1 It is an exploded view of the instant fluid heating device.

[0018] Explanation of main element symbols:

[0019] 10, outer tube shell; 11, water inlet; 12, water outlet; 20, heating rod assembly; 21, heating wire; 22, positioning ceramic core; 23, heating rod shell; 30, high-power heating area; 40, low-power heating area. DETAILED DESCRIPTION

[0020] This part will describe the specific embodiments of the utility model in detail, the preferred embodiments of the utility model are shown in the drawings, the role of the drawings is to supplement the description of the text part with graphics, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the utility model, but it cannot be understood as the limitation of the protection scope of the utility model.

[0021] In the description of the utility model, the meaning of multiple is two or more than, less than, more than, etc. Understand as not including the number, above, below, within, etc. Understand as including the number. If there is a description to the first, second, it is only used for distinguishing the purpose of technical features, and can not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0022] In the description of the utility model, it is understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. It is based on the orientation or position relationship shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and is not indicative or suggestive of the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, therefore, it can not be understood as a limitation on the utility model.

[0023] In the utility model, unless otherwise explicitly limited, the words such as "arrangement", "installation", "connection" should be broadly understood, for example, it can be directly connected, also can be indirectly connected through intermediate medium;It can be fixedly connected, can be detachably connected, can also be integrally formed;It can be mechanical connection;It can be the communication or interaction relationship between two elements inside two elements. The skilled in the art can reasonably determine the specific meaning of the above words in the utility model according to the specific content of the technical scheme.

[0024] Embodiment

[0025] Refer to Figure 1 And Figure 2 The utility model proposes a kind of corrosion-resistant and durable instant fluid heating device, including the outer pipe shell 10 with water inlet 11 and water outlet 12, the heating rod assembly 20 that extends into outer pipe shell 10, heating wire 21 is wound on heating rod assembly 20;

[0026] Heating wire 21 is wound to form high-power heating area 30 and low-power heating area 40 in heating rod assembly 20;High-power heating area 30 is close to water inlet 11 and is arranged, and low-power heating area 40 is close to water outlet 12 and is arranged;The winding density of heating wire 21 of high-power heating area 30 is greater than the winding density of heating wire 21 of low-power heating area 40.

[0027] In the utility model, the heating wire 21 is wound to form high-power heating area 30 and low-power heating area 40 in the heating rod assembly 20, and the winding density of the heating wire 21 in the two heating areas is different, the winding density of the heating wire 21 at the water outlet 12 is reduced while the overall high heating power performance is maintained, the heat dissipation demand of the part of the heating wire 21 is reduced, even at the water outlet 12 with high fluid temperature, the effective heat exchange and dissipation effect can be achieved, the heating wire 21 is not prone to the fault of fusing and corrosion, and the service life of the instant fluid heating device is effectively improved.

[0028] In the embodiment, the outer tube shell 10 and the heating tube assembly are straight tubes, and the heating tube assembly is coincident with the center line of the outer tube shell 10. The outer tube shell 10 is a straight tube, the heating rod assembly 20 in a linear shape is used for heating, and the process consideration of bending processing is reduced.

[0029] Specifically, the water inlet 11 is located below the outer tube shell 10, and the water outlet 12 is located above the outer tube shell 10. The fluid flows from below to above of the outer tube shell 10, and the fluid can effectively cover the entire heating rod assembly 20 during the flow process and effectively exchange heat.

[0030] In the embodiment, the heating rod assembly 20 comprises a positioning ceramic core 22 and a heating rod shell 23, the heating wire 21 is wound outside the positioning ceramic core 22, and the heating rod shell 23 is arranged outside the positioning ceramic core 22 and the heating wire 21.

[0031] Specifically, the heating rod shell 23 is formed by rolling or forging magnesium oxide powder. The magnesium oxide powder is integrally formed by rolling or forging, the heating rod shell 23 is integrally formed after the positioning ceramic core 22 is wound with the heating wire 21, and the heating wire 21 is prevented from directly contacting the fluid.

[0032] In the embodiment, the winding density of the heating wire 21 in the high-power heating area 30 is twice that of the heating wire 21 in the low-power heating area 40.

[0033] In other embodiments, the winding density of the heating wire 21 increases from the end of the heating rod assembly 20 close to the water inlet 11 to the end close to the water outlet 12. The winding density of the heating wire 21 gradually decreases from the high-power heating area 30 to the low-power heating area 40.

[0034] Further, in order to improve the corrosion resistance of the instant fluid heating device, the outer tube shell 10 is made of stainless steel.

[0035] Of course, the utility model is not limited to the above-mentioned implementation ways, and those skilled in the art can make equivalent transformation or replacement without departing from the spirit of the utility model, and these equivalent transformation and replacement are all included in the range defined by the claims of the application.

Claims

1. A corrosion-resistant and durable instant fluid heating device, comprising an outer shell (10) with a water inlet (11) and a water outlet (12), a heating rod assembly (20) extending into the outer shell (10), and a heating wire (21) wound around the heating rod assembly (20); characterized in that: the heating wire (21) is wound around the heating rod assembly (20) to form a high-power heating zone (30) and a low-power heating zone (40); the high-power heating zone (30) is arranged near the water inlet (11), and the low-power heating zone (40) is arranged near the water outlet (12); the winding density of the heating wire (21) in the high-power heating zone (30) is greater than that in the low-power heating zone (40). The outer shell (10) and the heating tube assembly are straight tubes, and the heating tube assembly is coaxial with the center line of the outer shell (10).

2. The corrosion resistant, instant fluid heating device of claim 1, wherein: The water inlet (11) is located below the outer shell (10), and the water outlet (12) is located above the outer shell (10).

3. The corrosion resistant, instant fluid heating device of claim 2, wherein: The heating rod assembly (20) comprises a positioning ceramic core (22) and a heating rod shell (23); the heating wire (21) is wound around the outer side of the positioning ceramic core (22), and the heating rod shell (23) is wrapped around the outer side of the positioning ceramic core (22) and the heating wire (21).

4. The corrosion resistant, instant fluid heating device of claim 1, wherein: The heating rod shell (23) is formed by rolling or forging magnesium oxide powder.

5. The corrosion resistant, instant fluid heating device of claim 4, wherein: The winding density of the heating wire (21) in the high-power heating zone (30) is twice that in the low-power heating zone (40).

6. The corrosion resistant, instant fluid heating device of claim 1, wherein: The winding density of the heating wire (21) increases from the end of the heating rod assembly (20) near the water inlet (11) to the end near the water outlet (12).

7. The corrosion resistant, instant fluid heating device of claim 1, wherein: The outer shell (10) is made of stainless steel material.

8. The corrosion resistant, instant fluid heating device of claim 1, wherein: ​

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