Flow channel structure of tubular heater and heater

Abstract

This utility model discloses a flow channel structure and heater for a tubular heater in the field of heating equipment. It includes a pipe open at both ends and a groove on the pipe. The groove is formed by recessing from the outer wall of the pipe towards the interior. The groove is used to install a heating element, with both surfaces of the heating element facing the side walls of the groove. The interior of the pipe is used for fluid flow. This utility model installs the heating element by providing a recessed groove on the outer wall of the pipe. The heating element in the groove heats the fluid flowing through the pipe from both sides, avoiding one-sided heating and heat dissipation. This improves heating efficiency, ensures heat dissipation, and extends the service life of the heating element. The structure of this utility model is simple and compact.

Description

Technical Field

[0001] This utility model relates to the field of heating equipment, and in particular to a flow channel structure and heater for a tubular heater. Background Technology

[0002] The heater heats the fluid using a PTC heating element. Traditional tubular heaters have the following drawbacks:

[0003] 1. Low heat conduction speed: The heating element is attached to the outside of the metal cylinder, and the heating element only conducts heat on one side;

[0004] 2. Bulky structure: External heating elements require extra space, making it difficult to meet the requirements of compact devices;

[0005] 3. Uneven heat dissipation of heating element: The heat dissipation on the outside of the heating element is slower. For PTC heating elements, the outside of the heating element is almost dry-burning, which affects the life of the PTC heating element and causes a high power decay of the PTC heating element.

[0006] Therefore, a flow channel structure with high thermal conductivity, simple structure, and easy heat dissipation for heat-generating elements is needed. Utility Model Content

[0007] The purpose of this utility model is to provide a flow channel structure and heater for a tubular heater, wherein an inwardly recessed groove is provided on the pipe to install the heating element, so that both surfaces of the heating element can heat the fluid.

[0008] To solve the above technical problems, the following technical solution is adopted:

[0009] In a first aspect, this utility model provides a flow channel structure for a tubular heater, including a pipe with openings at both ends and a groove disposed on the pipe. The groove is formed by recessing from the outer wall of the pipe toward the interior of the pipe. The groove is used to install a heating element. The two surfaces of the heating element face the two side walls inside the groove. The interior of the pipe is used to allow fluid to pass through.

[0010] Optionally, the opening of the groove is located on the outer wall of the pipe, and the heating element enters the groove from the opening.

[0011] Optionally, the groove has a first sidewall and a second sidewall, and the two surfaces of the heating element conduct heat to the first sidewall and the second sidewall respectively, and the first sidewall and the second sidewall exchange heat with the fluid in the pipe.

[0012] Optionally, several of the grooves are evenly arranged circumferentially on the pipe.

[0013] Optionally, the outer wall of the pipe is wrapped with thermal insulation cotton.

[0014] Optionally, the pipe casing is provided with an outer shell.

[0015] Optionally, pipe fittings are connected to both ends of the pipe.

[0016] Optionally, the pipe is made of metal.

[0017] Secondly, this utility model provides a heater, including the flow channel structure of the tubular heater described in the first aspect.

[0018] Compared with the prior art, the beneficial effects achieved by this utility model are as follows:

[0019] This invention uses a recessed groove on the outer wall of a pipe to install a heating element. The heating element in the groove heats the fluid passing through the pipe from both sides, avoiding one-sided heating and heat dissipation. This improves heating efficiency, ensures heat dissipation, and extends the service life of the heating element. The invention has a simple and compact structure. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the pipe structure in an embodiment of this utility model;

[0021] Figure 2 This is a schematic diagram showing the disassembled structure of the flow channel of the tubular heater of this utility model;

[0022] Figure 3 This is a side view of the flow channel structure of the tubular heater of this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Pipe; 11. Groove; 111. First sidewall; 112. Second sidewall; 2. Pipe joint; 3. Heating element; 4. Insulation cotton; 5. Outer shell. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use.

[0026] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] Example 1

[0028] This embodiment provides a flow channel structure for a tubular heater, including a pipe 1 with openings at both ends and a groove 11 disposed on the pipe 1. The groove 11 is formed by recessing from the outer wall of the pipe 1 into the interior of the pipe 1. The groove 11 has a rectangular structure, and the opening of the groove 11 is located on the outer wall of the pipe 1. The groove 11 extends into the interior of the pipe 1 to a certain height. The interior of the groove 11 is used to install a heating element 3. When the heating element 3 is located in the groove 11, the two surfaces of the heating element 3 face the two side walls of the groove 11.

[0029] The pipe 1 is used to carry fluid. When in use, the two surfaces of the heating element 3 conduct heat to the two side walls of the groove 11. The two side walls of the groove 11 exchange heat with the fluid in the pipe 1, thereby heating the fluid in the pipe 1.

[0030] Both surfaces of the heating element can heat the fluid inside pipe 1, avoiding one-sided dry burning of the heating element, improving fluid heating efficiency, and also increasing the service life of the heating element.

[0031] Example 2

[0032] like Figure 1 , Figure 3As shown, this embodiment provides a flow channel structure for a tubular heater based on Embodiment 1. The outer wall of the groove 11 is located inside the pipe 1. The groove 11 has a first sidewall 111 and a second sidewall 112. The two surfaces of the heating element 3 are respectively attached to the first sidewall 111 and the second sidewall 112. The first sidewall 111 and the second sidewall 112 are located inside the pipe 1 and are in contact with the fluid inside the pipe 1, ensuring heat dissipation on both surfaces of the heating element 3 and improving the service life of the heating element 3.

[0033] Six grooves 11 are provided on the pipe 1, and the six grooves 11 are equally distributed circumferentially on the pipe 1. A heating element 3 is embedded in each groove 11 to heat the flow passing through the pipe 1, resulting in high heating efficiency.

[0034] Pipe 1 is made of metal, such as aluminum, iron or stainless steel, which has high thermal conductivity.

[0035] like Figure 2 As shown, pipe joints are welded at the openings at both ends of pipe 1, namely pipe joint 2 at the head end and pipe joint 21 at the tail end. Fluid pipes are connected through the pipe joints at both ends, and fluid is then transported from one end of pipe 1 to the inside. The heated fluid flows out from the other end.

[0036] like Figure 3 As shown, insulation cotton 4 is wrapped around the outside of pipe 1, and an outer shell 5 is provided over the insulation cotton 4. The insulation cotton 4 seals the opening of the groove 11 outside pipe 1, while simultaneously insulating pipe 1 to prevent heat loss. The outer shell 5 secures the insulation cotton 4, ensuring the insulation effect. The outer shell 5 can be made of metal or plastic, and it stabilizes the insulation cotton 4.

[0037] In use, fluid pipes are connected to both ends of pipe 1. Fluid enters pipe 1 from one end. The two surfaces of heating element 3 conduct heat to the first sidewall 111 and the second sidewall 112 respectively. The first sidewall 111 and the second sidewall 112 exchange heat with the fluid in pipe 1, thereby heating the fluid. The heated fluid flows out from the other end of pipe 1. Example

[0038] This embodiment provides a heater, which has a flow channel structure similar to that of the tubular heater in Embodiment 1 or Embodiment 2, thereby improving the service life of the heater.

[0039] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A flow channel structure for a tubular heater, characterized in that, It includes a pipe (1) with openings at both ends and a groove (11) provided on the pipe (1). The groove (11) is formed by recessing from the outer wall of the pipe (1) into the interior of the pipe (1). The groove (11) is used to install a heating element (3). The two surfaces of the heating element (3) are directly opposite the two side walls inside the groove (11). The interior of the pipe (1) is used for the passage of fluid.

2. The flow channel structure of the tubular heater according to claim 1, characterized in that, The opening of the groove (11) is located on the outer wall of the pipe (1), and the heating element (3) enters the groove (11) from the opening.

3. The flow channel structure of the tubular heater according to claim 1, characterized in that, The groove (11) has a first sidewall (111) and a second sidewall (112). The two surfaces of the heating element (3) conduct heat to the first sidewall (111) and the second sidewall (112) respectively. The first sidewall (111) and the second sidewall (112) then exchange heat with the fluid in the pipe.

4. The flow channel structure of the tubular heater according to claim 1, characterized in that, Several grooves (11) are evenly arranged circumferentially on the pipe (1).

5. The flow channel structure of the tubular heater according to claim 1, characterized in that, The outer wall of the pipe (1) is wrapped with thermal insulation cotton (4).

6. The flow channel structure of the tubular heater according to claim 1, characterized in that, The pipe (1) is fitted with an outer shell (5).

7. The flow channel structure of the tubular heater according to claim 1, characterized in that, The pipe (1) is connected to pipe joints at both ends.

8. The flow channel structure of the tubular heater according to claim 1, characterized in that, The pipe (1) is made of metal.

9. A heater, characterized in that, The flow channel structure includes the tubular heater as described in any one of claims 1-8.

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