Water heater

Abstract

The utility model relates to a water heater which comprises a heating pipe and a spiral water pipe wound on the periphery of the heating pipe, the spiral water pipe comprises a water inlet section, a spiral section and a water outlet section, and the water inlet section and the water outlet section are arranged at the two ends of the spiral section respectively. And the through-flow area of the water outlet section is smaller than that of the spiral section. The spiral water pipe comprises the water outlet section and the spiral section, and the through-flow area of the water outlet section is smaller than that of the spiral section by reducing the through-flow area of the water outlet section, so that the pressure of fluid in the spiral section is increased, and the highest output temperature of the fluid is further improved.

Description

Technical Field

[0001] The utility model relates to a water heater. Background Art

[0002] A water heater generally consists of a heating pipe and a spiral water pipe. The spiral water pipe is wound around the outer wall of the heating pipe. The spiral water pipe transfers heat by contacting the heating pipe, thereby heating the temperature of the fluid inside the spiral water pipe. However, the existing water heaters have the problem of a relatively low maximum output temperature of the fluid.

[0003] For example, a flow-through water heater disclosed in the publication number CN213713537U includes a spiral water pipe and a heating pipe. The heating pipe is welded in the inner hole formed by the spiral shape of the spiral water pipe. The two ends of the spiral water pipe serve as the water inlet and the water outlet respectively.

[0004] The maximum output temperature of the water heater of the above technology depends on the heating power of the heating pipe. The maximum output temperature of the fluid is limited and there is room for improvement in the maximum output temperature of the fluid. Summary of the Utility Model

[0005] In order to solve the above technical problems, the purpose of the utility model is to provide a water heater that can increase the output temperature of the fluid.

[0006] The technical solution adopted by the utility model to solve the problem is: a water heater, including a heating pipe and a spiral water pipe wound around the outer periphery of the heating pipe. The spiral water pipe includes an inlet section, a spiral section, and an outlet section. The inlet section and the outlet section are respectively arranged at both ends of the spiral section; the flow-through area of the outlet section is smaller than the flow-through area of the spiral section.

[0007] As a further improvement of the above technical solution, the cross-section of the spiral section is in the shape of a rounded quadrilateral.

[0008] As a further improvement of the above technical solution, the flow-through area of the inlet section is the same as the flow-through area of the outlet section.

[0009] As a further improvement of the above technical solution, both the inlet section and the outlet section are columnar.

[0010] As a further improvement of the above technical solution, the heating pipe includes an electric heating wire and an iron pipe. The electric heating wire is arranged inside the iron pipe. The outer wall of the iron pipe is wrapped with a first aluminum layer. The spiral water pipe is wound outside the first aluminum layer.

[0011] As a further improvement of the above technical solution, the outer wall of the spiral water pipe is coated with a second aluminum layer, and the second aluminum layer is closely attached to the first aluminum layer.

[0012] The beneficial effects of the present utility model are as follows: The spiral water pipe of the present utility model includes a water outlet section and a spiral section. By reducing the flow area of the water outlet section, the flow area of the water outlet section is made smaller than that of the spiral section, increasing the fluid pressure in the spiral section, and thus raising the maximum output temperature of the fluid. Description of the Drawings

[0013] The present utility model will be further explained and described below in conjunction with the description of the drawings and the specific embodiments.

[0014] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 It is a cross-sectional view of the water outlet section of the present utility model;

[0016] Figure 3 It is a cross-sectional view of the spiral section of the present utility model;

[0017] Figure 4 It is a schematic diagram of the structure of the spiral water pipe of the present utility model;

[0018] In the figure: 1 - heating pipe, 11 - iron pipe, 12 - first aluminum layer, 2 - spiral water pipe, 21 - water inlet section, 22 - spiral section, 23 - water outlet section. Specific Embodiments

[0019] This part will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the drawings. The role of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but it cannot be understood as a limitation on the protection scope of the present utility model.

[0020] In the description of the present utility model, it should be understood that for the orientation description, such as the upper, lower, front, rear, left, right, etc. indicating the orientation or positional relationship is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation on the present utility model.

[0021] In the description of the present utility model, unless otherwise clearly defined, words such as setting, installation, and connection should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above words in the present utility model in combination with the specific content of the technical solution.

[0022] Refer to Figures 1 to 4, a water heater, comprising a heating pipe 1 and a spiral water pipe 2 wound around the outer periphery of the heating pipe 1. The spiral water pipe 2 includes a water inlet section 21 (with a water inlet), a spiral section 22, and a water outlet section 23 (with a water outlet). The water inlet section 21 and the water outlet section 23 are respectively arranged at both ends of the spiral section 22. Fluid enters from the water inlet section 21 and then flows through the spiral section 22 and the water outlet section 23 in sequence; the flow-through area of the water outlet section 23 is smaller than that of the spiral section 22. By reducing the flow-through area of the water outlet section 23, the flow-through area of the spiral section 22 is made larger than that of the water outlet section 23, reducing the flow rate of the fluid (such as steam) output per unit time. The fluid in the spiral pipe is continuously heated, and the pressure in the inner cavity of the spiral pipe is increased, thereby increasing the maximum output temperature of the fluid. At the same time, the inner cavity of the spiral pipe is large and it is not easy to scale.

[0023] In a preferred embodiment, the cross-section of the spiral section 22 is in the shape of a rounded quadrilateral. Compared with a traditional round pipe, a square pipe with a quadrilateral shape can increase the contact area with the heating pipe 1, thereby improving the heat transfer efficiency.

[0024] In a preferred embodiment, the flow-through area of the water inlet section 21 is the same as that of the water outlet section 23, thereby forming a spiral water pipe 2 with a large inner cavity in the middle and small ends at both ends, increasing the temperature of the output fluid.

[0025] In a preferred embodiment, both the water inlet section 21 and the water outlet section 23 are columnar and have the same cross-sectional area. The two ends of the spiral water pipe 2 are changed to be columnar, which is convenient for installation with common pipe joints.

[0026] In a preferred embodiment, the heating pipe 1 includes an electric heating wire and an iron pipe 11. The electric heating wire is arranged inside the iron pipe 11, and the outer wall of the iron pipe 11 is wrapped with a first aluminum layer 12. The spiral water pipe 2 is wound outside the first aluminum layer 12. With the iron pipe 11 inside, the heat load can be increased, and thus the total length of the heating pipe 1 can be shortened, saving installation space. The first aluminum layer 12 is arranged outside the iron pipe 11, which can improve the thermal conductivity of the heating pipe 1, and the heat can be evenly transferred out from the heating pipe 1.

[0027] In a preferred embodiment, the spiral water pipe 2 is made of stainless steel, and the outer wall of the spiral water pipe 2 is coated with a second aluminum layer, which is in close contact with the first aluminum layer 12, facilitating welding and having good thermal conductivity.

[0028] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made under the inventive concept of the present invention, using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A water heater, comprising a heating pipe (1) and a spiral water pipe (2) wound around the outer periphery of the heating pipe (1), characterized in that: The spiral water pipe (2) includes a water inlet section (21), a spiral section (22) and a water outlet section (23), and the water inlet section (21) and the water outlet section (23) are respectively arranged at both ends of the spiral section (22); The flow-through area of the water outlet section (23) is smaller than the flow-through area of the spiral section (22).

2. The water heater according to claim 1, characterized in that: The cross-section of the spiral section (22) is in the shape of a rounded quadrilateral.

3. The water heater according to claim 1, characterized in that: The flow-through area of the water inlet section (21) is the same as the flow-through area of the water outlet section (23).

4. The water heater according to claim 3, characterized in that: Both the water inlet section (21) and the water outlet section (23) are columnar.

5. The water heater according to claim 1, characterized in that: The heating pipe (1) includes an electric heating wire and an iron pipe (11), the electric heating wire is arranged in the iron pipe (11), the outer wall of the iron pipe (11) is wrapped with a first aluminum layer (12), and the spiral water pipe (2) is wound around the outside of the first aluminum layer (12).

6. The water heater according to claim 5, characterized in that: The outer wall of the spiral water pipe (2) is coated with a second aluminum layer, and the second aluminum layer is in close contact with the first aluminum layer (12).

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