Energy-saving flow guide device

Abstract

The invention discloses an energy-saving flow guiding device, and relates to the technical field of fluid heating, and the energy-saving flow guiding device comprises an outer layer heating pipe made of a corrosion-resistant metal material; the inner-layer flow guide pipe is arranged in the outer-layer heating pipe and is made of a high-temperature-resistant metal material, and at least one spiral channel is formed in the outer surface of the inner-layer flow guide pipe; the space between the outer-layer heating pipe and the inner-layer flow guide pipe is filled with the heat preservation layer; the first sealing piece and the second sealing piece are connected to the two ends of the outer-layer heating pipe and the two ends of the inner-layer flow guide pipe in a sealed mode respectively, and the heat preservation layer arranged between the double pipes in a filling mode effectively reduces radial heat loss. According to the overall structure, the heating response speed and the temperature uniformity are improved, and meanwhile the requirement for the instantaneous power of the heating assembly is lowered while the same heating effect is achieved. And the detection device integrated at the fluid inlet can cut off a heating power supply in time when fluid supply is interrupted, so that the operation safety of the device is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fluid heating, in particular to an energy-saving flow guide device. BACKGROUND

[0002] Under the background of current energy shortage, energy saving has become an important goal of various thermal equipment design, the core of which is to achieve the same heating effect with less energy input by optimizing the heat transfer process and reducing invalid loss. The existing common fluid heating structure often adopts single-layer straight-through or simple sleeve type design, the internal fluid channel of which is single and the heat exchange area is limited, resulting in large thermal resistance of the path from the heat source to the fluid to be heated and low heat transfer efficiency. In order to overcome this defect and achieve rapid heating, a high-power electric heating element (such as a high-power electric heating ring or electric heating pipe) is often configured. This not only increases the energy consumption of the equipment itself, but also easily causes tripping due to line overload in some application environments with limited circuit capacity (such as some old or rented houses), and even brings safety hazards such as electric leakage and fire. In addition, some existing devices lack reliable working state monitoring and protection mechanism, for example, they cannot stop heating in time when the fluid supply is interrupted, further increasing the risk of operation.

[0003] In view of the above problems, the design direction of the present application is to improve the internal heat transfer structure, create a multi-channel flow and heat exchange path, greatly increase the effective heat exchange area in a limited space, optimize the uniformity and efficiency of heat transfer, so as to reduce the dependence on the peak power of the heater under the premise of realizing the expected heating capacity, and relieve the line load pressure from the source and improve the safety of equipment operation. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides an energy-saving flow guide device, which solves the technical problems raised in the background art.

[0005] To achieve the above purpose, the present application is realized by the following technical scheme: an energy-saving flow guide device, comprising: an outer heating pipe made of corrosion-resistant metal material; an inner flow guide pipe arranged inside the outer heating pipe and made of high-temperature-resistant metal material, the outer surface of which is provided with at least one spiral channel; a heat preservation layer filled in the space between the outer heating pipe and the inner flow guide pipe; a first sealing member and a second sealing member respectively sealed and connected to the two ends of the outer heating pipe and the inner flow guide pipe; and a fluid inlet and a fluid outlet arranged on the outer heating pipe, the fluid inlet and the fluid outlet are both in communication with the internal cavity of the inner flow guide pipe.

[0006] Preferably, the outer surface of the inner layer flow guide pipe is provided with multiple spiral channels, and each spiral channel is independently arranged.

[0007] Preferably, the wall thickness of the outer layer heating pipe is smaller than the wall thickness of the inner layer flow guide pipe.

[0008] Preferably, the fluid outlet is provided with a temperature detection device.

[0009] Preferably, the fluid inlet is connected with a fluid detection device, and the fluid detection device is used to cut off the power supply of the external heating assembly when no fluid is detected.

[0010] Preferably, the material of the outer layer heating pipe and the inner layer flow guide pipe is austenitic heat-resistant stainless steel.

[0011] Preferably, the outer surface of the outer layer heating pipe is provided with a heating assembly, and the heating assembly is one of a high-frequency induction heating coil, an electric heating ring, an electric heating tube, or a gas heater.

[0012] Preferably, the cross-sectional shape of the spiral channel is one of an arc shape, a rectangular shape, or a trapezoidal shape. Beneficial effects

[0013] The present application provides an energy-saving flow guide device. By arranging a spiral channel on the outer surface of the inner layer flow guide pipe, the effective heat transfer area is significantly increased, the heat flow path is optimized, and the heat conduction efficiency from the outer layer heating pipe to the internal fluid is improved. The heat preservation layer filled between the double pipes effectively reduces the radial heat loss. The overall structure improves the heating response speed and temperature uniformity, and helps to reduce the instantaneous power demand of the heating assembly while achieving the same heating effect. The detection device integrated in the fluid inlet can cut off the heating power supply in time when the fluid supply is interrupted, thereby improving the safety of the device operation. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 The figure is a structural schematic diagram of the energy-saving flow guide device.

[0015] In the figure: 1, outer layer heating pipe; 2, inner layer flow guide pipe; 3, spiral channel; 4, heat preservation layer; 5, fluid inlet; 6, fluid outlet. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0017] Please refer to Figure 1 The application provides a technical solution: energy-saving flow guide device, comprising: Outer heating pipe 1, made of corrosion-resistant metal material; Inner layer flow guide pipe 2, arranged inside the outer heating pipe 1, made of high-temperature-resistant metal material, and provided with at least one spiral channel 3 on the outer surface; Thermal insulation layer 4, filled in the space between the outer heating pipe 1 and the inner layer flow guide pipe 2; First and second sealing members, respectively sealed and connected to the two ends of the outer heating pipe 1 and the inner layer flow guide pipe 2; And Fluid inlet 5 and fluid outlet 6 arranged on the outer heating pipe 1, the fluid inlet 5 and the fluid outlet 6 are communicated with the internal cavity of the inner layer flow guide pipe 2.

[0018] The embodiment is further provided that the spiral channel 3 on the outer surface of the inner layer flow guide pipe 2 is multiple, and each spiral channel 3 is independently arranged.

[0019] The embodiment is further provided that the wall thickness of the outer heating pipe 1 is less than the wall thickness of the inner layer flow guide pipe 2.

[0020] The embodiment is further provided that the fluid outlet 6 is provided with a temperature detection device.

[0021] The embodiment is further provided that the fluid inlet 5 is connected with a fluid detection device, and the fluid detection device is used to cut off the power supply of the external heating assembly when no fluid is detected.

[0022] The embodiment is further provided that the material of the outer heating pipe 1 and the inner layer flow guide pipe 2 is austenitic heat-resistant stainless steel.

[0023] The embodiment is further provided that the outer heating pipe 1 is provided with a heating assembly, and the heating assembly is one of high-frequency induction heating coil, electric heating ring, electric heating pipe or gas heater.

[0024] The embodiment is further provided that the cross-sectional shape of the spiral channel 3 is one of arc, rectangle or trapezoid.

[0025] The detailed connection means is a technology known in the art, and the working principle and process are mainly introduced below, and the specific work is as follows.

[0026] Example: The device mainly consists of the following parts: an outer heating tube 1, made of 310S stainless steel, whose outer wall can be used for winding high-frequency induction coils or attaching heating elements. An inner guide tube 2, coaxially arranged inside the outer heating tube 1, is made of 310 stainless steel, and its outer surface is machined with three independent spiral channels 3, the channel cross-section of which is arc-shaped.

[0027] The annular space between the outer heating tube 1 and the inner guide tube 2 is filled with insulation material 4, such as ceramic fiber cotton. The two ends of the device are sealed by end caps or welding to achieve an overall seal.

[0028] At one end of the device (e.g., the left end), the outer heating tube 1 is provided with a fluid inlet, and at the other end (e.g., the right end) is provided with a fluid outlet. Both the fluid inlet and the fluid outlet are connected to the inner cavity of the inner guide tube 2.

[0029] As a preferred embodiment, a fluid detection device, such as a flow switch, can be installed at the fluid inlet or in the connected pipeline to cut off the external heating power supply when no fluid is flowing. A temperature sensor can be installed at the fluid outlet to monitor the temperature of the output fluid.

[0030] The working principle of this embodiment is as follows: the heating element acts on the outer heating tube 1, and heat is transferred through the tube wall. The spiral channel 3 on the outer wall of the inner guide tube 2 increases the effective heat conduction area and guides heat to flow more evenly to the fluid flowing in the center. The insulation material 4 effectively reduces radial heat loss. Finally, the fluid is efficiently heated as it flows through the inner guide tube 2 and is output from the outlet.

[0031] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

Claims

1. An energy-saving flow diversion device, characterized in that, include: The outer heating element (1) is made of corrosion-resistant metal material; The inner layer guide tube (2) is located inside the outer layer heating tube (1) and is made of high temperature resistant metal material. Its outer surface is provided with at least one spiral channel (3). The insulation layer (4) fills the space between the outer heating tube (1) and the inner guide tube (2); The first sealing member and the second sealing member are respectively sealed and connected to the two ends of the outer heating tube (1) and the inner guide tube (2); as well as The fluid inlet (5) and fluid outlet (6) are provided on the outer heating tube (1), and both the fluid inlet (5) and fluid outlet (6) are connected to the internal cavity of the inner guide tube (2).

2. The energy-saving flow guiding device according to claim 1, characterized in that... The inner guide tube (2) has multiple spiral channels (3) on its outer surface, and each spiral channel (3) is set independently.

3. The energy-saving flow guiding device according to claim 1, characterized in that... The wall thickness of the outer heating tube (1) is less than the wall thickness of the inner guide tube (2).

4. The energy-saving flow guiding device according to claim 1, characterized in that... A temperature detection device is provided at the fluid outlet (6).

5. The energy-saving flow guiding device according to claim 1, characterized in that... A fluid detection device is connected to the fluid inlet (5), which is used to cut off the power supply to the external heating component when no fluid is detected.

6. The energy-saving flow guiding device according to claim 1, characterized in that... The outer heating tube (1) and the inner guide tube (2) are made of austenitic heat-resistant stainless steel.

7. The energy-saving flow guiding device according to claim 1, characterized in that... The outer heating tube (1) is provided with a heating component, which is one of a high-frequency induction heating coil, an electric heating coil, an electric heating tube or a gas heater.

8. The energy-saving flow guiding device according to claim 1, characterized in that... The cross-sectional shape of the spiral channel (3) is one of arc, rectangle or trapezoid.

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