Cast aluminum heating body internal water pipe flat pipe structure

Abstract

The utility model discloses a water pipe flat pipe structure inside a cast aluminum heating body, which comprises a plurality of groups of heating pipes and a water pipe spirally wound on the heating pipes, the water pipe is provided with a water inlet and a water outlet, and the cross section of the water pipe is in a long-strip waist shape. The water pipe flat pipe structure in the cast aluminum heating body has the advantages of compact structure, high space utilization rate, high heat exchange efficiency and high heat utilization rate.

Description

Technical Field

[0001] This utility model relates to the field of heater technology, specifically to a flat tube structure for the internal water pipe of a cast aluminum heating element. Background Technology

[0002] Currently, cast aluminum heating elements on the market suffer from significant pressure loss in the inlet and outlet water due to limitations in pipe diameter. Simply increasing the pipe diameter would increase the overall volume and weight of the cast aluminum heating element. Therefore, it is necessary to design a new type of internal water pipe structure for cast aluminum heating elements to solve the problem of large pressure loss in the inlet and outlet water. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a flat tube structure for the internal water pipe of a cast aluminum heating element that is compact, has high space utilization, and high heat exchange efficiency and heat utilization.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A flat tube structure for the internal water pipe of a cast aluminum heating element includes several sets of heating tubes and a water pipe spirally coiled around the heating tubes. The water pipe has an inlet and an outlet, and the cross-section of the water pipe is an elongated waist shape.

[0006] As a further improvement to the above technical solution:

[0007] The cross-sectional length L of the water pipe is greater than or equal to twice the cross-sectional width W.

[0008] The water pipe includes an inlet pipe section, a coil section, and an outlet pipe section. The inlet pipe section is connected to the lower end of the coil section, and the outlet pipe section is connected to the upper end of the coil section.

[0009] The coiled sections are stacked and spiraled in the vertical direction along the cross-sectional length L of the water pipe.

[0010] The heating element is a straight tube type heating wire tube, and several groups of the heating elements are arranged side by side along a straight line.

[0011] Compared with the prior art, the advantages of this utility model are:

[0012] The flat tube structure of the internal water pipe of this utility model's cast aluminum heating element includes a heating tube and a water pipe spirally coiled around the heating tube. The cross-sectional shape of the water pipe is designed as a long, waist-shaped strip formed by two straight sides and two semi-circular arcs. This allows the water pipe to be stacked and spiraled along its cross-sectional length in the vertical direction. Compared with the circular pipe in the prior art, the cross-sectional area of ​​the water pipe is larger than that of a circular pipe with its cross-sectional width as its diameter, thus increasing the flow area. The overall size of the cast aluminum heating element remains unchanged, improving space utilization and increasing the flow rate of inlet and outlet water. Without increasing the volume of the cast aluminum heating element, the pressure loss of the inlet and outlet water of the entire cast aluminum heating element is reduced. It has the advantages of compact structure, high space utilization, high heat exchange efficiency and high thermal utilization rate, which can reduce the energy loss of the cast aluminum heating element system and extend its service life. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the flattened water pipe structure inside the cast aluminum heating element.

[0014] Figure 2 This is a half-section diagram of the flattened water pipe structure inside the cast aluminum heating element.

[0015] Figure 3 This is a front view structural diagram of a water pipe.

[0016] Figure 4 This is a schematic diagram of the water pipe from below.

[0017] Legend:

[0018] 1. Heating element; 2. Water pipe; 201. Inlet pipe section; 202. Coil section; 203. Outlet pipe section; 3. Inlet; 4. Outlet. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] like Figures 1 to 4 As shown, the internal flat tube structure of the cast aluminum heating element in this embodiment includes several sets of heating tubes 1 and water tubes 2 spirally coiled around the heating tubes 1. The water tubes 2 have inlet 3 and outlet 4, and the cross-section of the water tubes 2 is an elongated waist shape. This internal flat tube structure of the cast aluminum heating element includes heating tubes 1 and water tubes 2 spirally coiled around the heating tubes 1. The cross-sectional shape of the water tubes 2 is designed as an elongated waist shape formed by two straight sides and two semicircular arcs, so that the water tubes 2 are stacked and spiraled along their cross-sectional length L in the vertical direction (e.g., ...). Figure 2As shown in the figure, compared with the circular pipe in the prior art, the cross-sectional area of ​​water pipe 2 is larger than that of a circular pipe with a diameter of its cross-sectional width W, which expands the flow area. The overall size of the cast aluminum heating body remains unchanged, improving space utilization and increasing the flow rate of inlet and outlet water. Without expanding the volume of the cast aluminum heating body, the pressure loss of the inlet and outlet water of the entire cast aluminum heating body is reduced. It has the advantages of compact structure, high space utilization, high heat exchange efficiency and high heat utilization rate, which can reduce the energy loss of the cast aluminum heating body system and extend its service life.

[0021] Preferably, the cross-sectional length L of the water pipe 2 is greater than or equal to twice the cross-sectional width W. In this embodiment, as... Figure 4 As shown, the value of the cross-sectional length L of water pipe 2 can be greater than or equal to twice the cross-sectional width W. For example, the cross-sectional length L is 11cm and the cross-sectional width is 5cm. That is, the cross-sectional area of ​​water pipe 2 is greater than the cross-sectional area of ​​two sets of circular pipes with diameter W side by side. Because the cross-sectional area of ​​water pipe 2 is increased, the flow rate of water entering and leaving the pipe is increased, thereby reducing the water pressure loss of this spiral coil structure. This achieves the goal of reducing the water pressure loss of the entire cast aluminum heating element without increasing the volume of the cast aluminum heating element. In other embodiments, the cross-sectional length L of water pipe 2 can also be set to a value in the range of greater than one cross-sectional width W and less than twice the cross-sectional width W, and is not limited to this embodiment.

[0022] Preferably, the water pipe 2 includes an inlet pipe section 201, a coil section 202, and an outlet pipe section 203. The inlet pipe section 201 is connected to the lower end of the coil section 202, and the outlet pipe section 203 is connected to the upper end of the coil section 202. In this embodiment, since hot water, which has a lower density, floats and cold water, which has a higher density, sinks, cold water is input from the inlet 3, enters the lower end of the coil section 202 through the inlet pipe section 201, and flows upward. This avoids turbulence caused by density differences and facilitates effective heat exchange. The heated hot water flows from the upper end of the coil section 202 to the outlet pipe section 203 and is output from the outlet 4. Specifically, in this embodiment, the inlet 3 and the outlet 4 are vertically oriented downwards.

[0023] Preferably, the coil section 202 is stacked and spiraled in the vertical direction along the cross-sectional length L of the water pipe 2, such that the distance between the inner side and the outer side of the coil section 202 is its cross-sectional width W, which is beneficial to improving the heat exchange efficiency and heat utilization rate between the coil section 202 and the heating tube 1. In other embodiments, the coil section 202 can also be stacked and spiraled in the vertical direction along the cross-sectional width W of the water pipe 2, such that the distance between the inner side and the outer side of the coil section 202 is its cross-sectional length L, which is not limited to this embodiment.

[0024] Preferably, the heating element 1 is a straight-tube heating wire tube, and several groups of heating elements 1 are arranged side by side along a straight line. In this embodiment, the heating element 1 is a straight-tube electric heating wire tube, which has the advantages of high thermal efficiency, fast thermal response, high temperature control accuracy, long service life, and low cost. The arrangement of multiple groups of heating elements 1 side by side along a straight line not only saves space and reduces the volume of the cast aluminum heating element, but also increases the heating range and improves the heat exchange efficiency. In other embodiments, the heating element 1 can also be selected from U-shaped tubes, S-shaped tubes, etc., and can also be made of materials such as ceramic heating elements or quartz heating elements, and is not limited to this embodiment.

[0025] The above description is merely a preferred embodiment of this utility model, and the protection scope of this utility model is not limited to the above embodiments. For those skilled in the art, improvements and modifications obtained without departing from the technical concept of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A flat tube structure for the internal water pipe of a cast aluminum heating element, characterized in that, It includes several sets of heating tubes (1) and a water pipe (2) spirally coiled around the heating tubes (1). The water pipe (2) has an inlet (3) and an outlet (4). The cross-section of the water pipe (2) is a long waist shape.

2. The flat tube structure of the internal water pipe of the cast aluminum heating element according to claim 1, characterized in that, The cross-sectional length L of the water pipe (2) is greater than or equal to twice the cross-sectional width W.

3. The flat tube structure of the internal water pipe of the cast aluminum heating element according to claim 2, characterized in that, The water pipe (2) includes an inlet pipe section (201), a coil section (202) and an outlet pipe section (203). The inlet pipe section (201) is connected to the lower end of the coil section (202), and the outlet pipe section (203) is connected to the upper end of the coil section (202).

4. The flat tube structure of the internal water pipe of the cast aluminum heating element according to claim 3, characterized in that, The coil section (202) is formed by stacking and spiraling in the vertical direction along the cross-sectional length L of the water pipe (2).

5. The flat tube structure of the internal water pipe of the cast aluminum heating element according to claim 1, characterized in that, The heating element (1) is a straight tube heating wire tube, and several groups of the heating elements (1) are arranged side by side along a straight line.

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