Instant fluid heating device with flow choking and retarding functions

Abstract

The utility model discloses a flow-choking slow-speed instant-heating fluid heating device. A heating wire is wound on a 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 heating wire winding density of the high-power heating area is greater than that of the low-power heating area; the spiral flow blocking piece can form a spiral flow channel in the flow passing channel. According to the instant heating fluid heating device, the heating wire is not prone to fusing and corrosion faults, and the service life of the instant heating fluid heating device is effectively prolonged; and the resistance of the fluid in the overflowing channel is effectively increased, the speed of the fluid passing through the overflowing channel is reduced, and the low-flow-speed instant heating effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to instant fluid heating structure technical field, especially instant fluid heating device of flow resistance of blocking. 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, drinking water machine, 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 realizing the effect of instant heating, the heating power of heating wire is larger, and it is heated for fluid, and fluid is also synchronized to heating wire for heat dissipation;But, the fluid temperature near water outlet is higher, the heat of heating wire cannot be quickly dissipated at this time;In the long-term use process, the heating wire at this place exists the fault of melting and corrosion.And for coffee machine and other water supply equipment needing to provide low flow rate, the flow rate of fluid also needs to be considered to reduce.Therefore, it needs to be further improved. SUMMARY

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

[0004] The technical scheme adopted by one embodiment of the utility model to solve its technical problem is as follows: an instant fluid heating device of flow resistance of blocking, 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 close to the water inlet, and the low-power heating area is 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] The heating rod assembly and outer pipe shell form a flow passage;The heating rod assembly is provided with a spiral flow resistance member;The spiral flow resistance member can form a spiral flow channel in the flow passage.

[0007] 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.

[0008] Optionally, the spiral flow resistance member is a metal spring structure, which can be sleeved on the outside of the heating rod assembly and pressed into the outer pipe shell.

[0009] Optionally, the inner side of the spiral flow resistance member can be attached to the outer wall of the heating rod assembly, and the outer side can be attached to the inner wall of the outer shell.

[0010] Optionally, the heating rod assembly comprises a positioning ceramic core and a heating rod shell; the heating wire is wound around the outer side of the positioning ceramic core, and the heating rod shell is wrapped around the outer side of the positioning ceramic core and the heating wire.

[0011] Optionally, the heating rod shell is formed by rolling or forging magnesium oxide powder.

[0012] Optionally, the winding density of the heating wire in the high-power heating area is twice that of the winding density of the heating wire in the low-power heating area.

[0013] Optionally, the winding density of the heating wire increases from the end of the heating rod assembly close to the water inlet to the end close to the water outlet.

[0014] Optionally, the outer shell and the spiral flow resistance member are made of stainless steel material.

[0015] The heating wire is wound in the heating rod assembly to form a high-power heating area and a low-power heating area, the winding density of the heating wire in the two heating areas is 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 where the fluid temperature is high, the effective heat exchange and heat dissipation effect can be achieved, the heating wire is not easy to be fused and corroded, and the service life of the instant fluid heating device is effectively improved.

[0016] In order to make the above-mentioned purposes, features 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

[0017] The above and / or additional aspects and advantages of the utility model will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0018] Figure 1 It is a structure diagram of the instant fluid heating device of the utility model.

[0019] Figure 2 It is Figure 1 It is an exploded view of the instant fluid heating device.

[0020] Main element symbol explanation:

[0021] 10, outer 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; 50, overflow channel; 60, spiral choke. DETAILED DESCRIPTION

[0022] 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 limiting the protection scope of the utility model.

[0023] In the description of the utility model, the meaning of multiple is more than two, greater than, less than, more than, etc. is not included in the number, above, below, etc. is included in the number. If it is described as first, second, it is only used for distinguishing technical features for the purpose, and cannot 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.

[0024] In the description of the utility model, it is understood that the position description, such as the position or location relationship indicated by up, down, front, back, left, right, etc. is based on the position or location relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and is not used to indicate or imply that the device or element indicated must have a specific position, be constructed and operated in a specific position, so it cannot be understood as limiting the utility model.

[0025] In the utility model, unless otherwise explicitly limited, the words "set", "install", "connect" and the like should be broadly understood, for example, they can be directly connected, or indirectly connected through an intermediate medium; can be fixedly connected, or can be detachably connected, or can be integrally formed; can be mechanically connected; can be the internal communication or interaction relationship of 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.

[0026] Embodiment

[0027] Reference Figure 1 And Figure 2 The utility model provides a kind of fluid heating device of instant heating of resistance flow slow speed, including the outer shell 10 with water inlet 11 and water outlet 12, heating rod assembly 20 is inserted into outer shell 10, heating wire 21 is wound on heating rod assembly 20;

[0028] The heating wire 21 is wound on the heating rod assembly 20 to form a high-power heating area 30 and a low-power heating area 40; the high-power heating area 30 is arranged close to the water inlet 11, and the low-power heating area 40 is arranged close to the water outlet 12; the winding density of the heating wire 21 of the high-power heating area 30 is greater than that of the low-power heating area 40;

[0029] The heating rod assembly 20 is spaced from the outer pipe shell 10 to form a flow channel 50; the outer sleeve of the heating rod assembly 20 is provided with a spiral flow resistance piece 60; the spiral flow resistance piece 60 can form a spiral flow channel in the flow channel 50.

[0030] In the utility model, the heating wire 21 is wound on the heating rod assembly 20 to form a high-power heating area 30 and a low-power heating area 40, the winding densities of the heating wires 21 in the two heating areas are 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; and the spiral flow resistance piece 60 can form a spiral flow channel in the flow channel 50, the fluid can be prevented from flowing directly from the water inlet 11 to the water outlet 12, and needs to flow spirally upward, the resistance of the fluid in the flow channel 50 is effectively increased, the speed of the fluid passing through the flow channel 50 is reduced, and the effect of instant heating at low flow speed is achieved.

[0031] Specifically, the outer pipe shell 10 and the heating pipe assembly are straight pipes, and the heating pipe assembly is coincident with the center line of the outer pipe shell 10. The outer pipe shell 10 is a straight pipe, the heating rod assembly 20 in a linear shape is used for heating, and the process consideration of bending processing is reduced.

[0032] In the embodiment, the spiral flow resistance piece 60 is a metal spring structure, can be sleeved on the outer side of the heating rod assembly 20 and pressed into the outer pipe shell 10, other pipe structures do not need to be changed, the flow resistance performance of the bolt flow resistance piece can be changed by changing the pitch of the metal spring structure, and the spiral flow resistance piece can be conveniently sleeved and installed together with the heating rod assembly 20.

[0033] Specifically, the inner side of the spiral flow resistance piece 60 can be attached to the outer wall of the heating rod assembly 20, and the outer side can be attached to the inner wall of the outer pipe shell 10.

[0034] Further, the water inlet 11 is located below the outer pipe shell 10; the water outlet 12 is located above the outer pipe shell 10. The fluid flows from the lower part of the outer pipe shell 10 to the upper part, and can effectively cover the entire heating rod assembly 20 during the fluid flow process and effectively exchange heat.

[0035] 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 on the outer side of the positioning ceramic core 22, and the heating rod shell 23 is arranged on the outer side of the positioning ceramic core 22 and the heating wire 21.

[0036] Specifically, the heating rod shell 23 is formed by rolling or forging magnesium oxide powder. By rolling or forging the magnesium oxide powder in an integrated manner, the heating rod shell 23 can be integrally formed after the heating wire 21 is wound on the positioning ceramic core 22, so as to prevent the heating wire 21 from directly contacting the fluid.

[0037] 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.

[0038] 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. In this way, the winding density of the heating wire 21 gradually decreases from the high-power heating area 30 to the low-power heating area 40.

[0039] Further, in order to improve the corrosion resistance of the instant fluid heating device, the outer tube shell 10 and the spiral flow resistance member 60 are made of stainless steel.

[0040] Of course, the present application is not limited to the above-mentioned embodiments, and those skilled in the art can make equivalent modifications or replacements without departing from the spirit of the present application. These equivalent modifications and replacements are all included in the scope defined by the claims of the present application.

Claims

1. A flow-retarding and slow-moving instantaneous fluid heating device, comprising an outer shell (10) having an inlet (11) and an outlet (12), a heating rod assembly (20) extending into the outer shell (10), and a heating wire (21) wound on 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 located near the water inlet (11), and the low-power heating zone (40) is located near the water outlet (12); the winding density of the heating wire (21) in the high-power heating zone (30) is greater than the winding density of the heating wire (21) in the low-power heating zone (40); The heating rod assembly (20) and the outer shell (10) form a flow channel (50) at intervals; the heating rod assembly (20) is covered with a spiral flow-blocking member (60); the spiral flow-blocking member (60) can form a spiral flow channel in the flow channel (50).

2. The flow-retarding and slow-moving instantaneous fluid heating device according to claim 1, characterized in that: The outer shell (10) and the heating tube assembly are straight tubes, and the heating tube assembly coincides with the center line of the outer shell (10).

3. The flow-retarding and slow-moving instantaneous fluid heating device according to claim 2, characterized in that: The spiral flow-blocking component (60) is a metal spring structure that can be sleeved on the outside of the heating rod assembly (20) and pressed into the outer shell (10).

4. The flow-retarding and slow-moving instantaneous fluid heating device according to claim 3, characterized in that: The inner side of the spiral flow-blocking component (60) can be attached to the outer wall of the heating rod assembly (20), and the outer side can be attached to the inner wall of the outer tube shell (10).

5. The flow-retarding and slow-moving instantaneous fluid heating device according to claim 1, characterized in that: The heating rod assembly (20) includes a positioning ceramic core (22) and a heating rod shell (23); the heating wire (21) is wound around the outside of the positioning ceramic core (22), and the heating rod shell (23) is disposed on the outside of the positioning ceramic core (22) and the heating wire (21).

6. The flow-retarding and slow-moving instantaneous fluid heating device according to claim 5, characterized in that: The heating rod shell (23) is formed by rolling or forging magnesium oxide powder.

7. The flow-retarding and slow-moving instantaneous fluid heating device according to claim 1, characterized in that: The winding density of the heating wire (21) in the high-power heating zone (30) is twice that of the winding density of the heating wire (21) in the low-power heating zone (40).

8. The flow-retarding and slow-moving instantaneous fluid heating device according to claim 1, characterized in that: The heating wire (21) is wound with increased density from the end of the heating rod assembly (20) near the water inlet (11) to the end near the water outlet (12).

9. The flow-retarding and slow-moving instantaneous fluid heating device according to claim 1, characterized in that: The outer shell (10) and the spiral flow-blocking component (60) are made of stainless steel.

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