CN220230211U - Evaporation-condensation dual-purpose efficient heat exchange tube - Google Patents

Abstract

The application discloses dual-purpose high-efficient heat transfer pipe of evaporation condensation, including the copper pipe, be equipped with first internal thread on the inner wall of copper pipe, the tooth tank bottom of first internal thread is convex, be equipped with the outer fin on the outer wall of copper pipe, the middle part of first internal thread is equipped with the turbulent flow groove along its spiral direction, just first internal thread is in the both sides of turbulent flow groove form the circular arc arch, the arc mouth orientation of circular arc arch the inner wall of copper pipe. The pipe expander can produce continuous inward bending deformation under the action of external force on the circular arc arch on the first internal thread, so that the deformation structure is stable, the reduction of the height of the circular arc arch can be avoided, and the heat exchange efficiency of the copper pipe is guaranteed.

Description

Evaporation-condensation dual-purpose efficient heat exchange tube

Technical Field

The application relates to the technical field of heat exchange, in particular to an evaporation and condensation dual-purpose efficient heat exchange tube.

Background

The current common air conditioner condenser (heat exchanger) is a tube-fin type condenser, the tube-fin type condenser comprises a condensing tube and a plurality of cooling fins, the condensing tube is made of a heat transfer copper tube, the condensing tube penetrates into a connecting hole of the cooling fins to be connected with the cooling fins, and in order to improve the heat exchange efficiency of a refrigerant, the condensing tube is usually provided with a first internal thread copper tube.

In order to improve the heat exchange efficiency of the refrigerant, an internal thread copper pipe is generally adopted in the condenser pipe. However, a small gap is usually formed between the heat transfer copper tube and the connection hole of the heat sink, so that a tube expander is required to increase the inner diameter and the outer diameter of the copper tube, so that the outer wall of the copper tube is tightly attached to the connection hole of the heat sink. However, when the internal thread copper pipe expands, the top of the tooth rib is extruded by the core rod expansion pipe, so that the tooth height of the tooth rib is reduced, the turbulence effect of the refrigerant is reduced, and the heat exchange efficiency of the refrigerant and the copper pipe is affected.

CN106610243a discloses a heat transfer copper pipe with reinforced turbulent flow, the inner wall of the copper pipe body is uniformly provided with four groups of tooth ribs, each group of tooth ribs occupies 90 ° circular arcs, the cross section of each tooth rib is isosceles triangle, one side waist of each tooth rib is provided with a deformation guiding notch groove, the directions of the deformation guiding notch grooves on each tooth rib in the same group of tooth ribs are the same, and the directions of the deformation guiding notch grooves on the tooth ribs in two adjacent groups of tooth ribs are opposite.

In the heat transfer copper pipe, if the thickness of the deformation guide notch groove is too large, the strength of the rest part of the tooth rib is low, and when the pipe is expanded, the tooth rib cannot forcefully support the pipe expander to complete the pipe expansion, and is easy to directly bend and deform downwards under the action of the pipe expander; if the thickness of the deformation guide notch groove is too small, the strength of the rest part of the tooth rib is large, and the tooth rib cannot be bent downwards to deform when expanding the tube, the tooth rib still can collapse under the action of the tube expander, and the heat exchange efficiency of the evaporation and condensation dual-purpose high-efficiency heat exchange tube is affected.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides an evaporation and condensation dual-purpose efficient heat exchange tube, which adopts the following technical scheme:

the utility model provides an evaporation and condensation dual-purpose high-efficient heat exchange tube, includes copper pipe and honeycomb duct, be equipped with first internal thread on the inner wall of copper pipe, the tooth tank bottom of first internal thread is convex, be equipped with the outer fin on the outer wall of copper pipe, the middle part of first internal thread is equipped with the turbulent flow groove along its spiral direction, just first internal thread is in the both sides of turbulent flow groove form the circular arc arch, the arc mouth of circular arc arch is towards the inner wall of copper pipe.

Preferably, the cross section of the turbulent flow groove is circular.

Preferably, the inner wall of the copper pipe is further provided with a second internal thread, and the tooth height of the second internal thread is smaller than that of the first internal thread.

Preferably, the first internal threads and the second internal threads are sequentially staggered along the axial direction of the copper pipe.

The utility model has the beneficial effects that:

the application is in evaporation and condensation dual-purpose high-efficient heat exchange tube is when carrying out the expand tube, and the expander can be through acting on the circular arc arch on first internal screw thread, and the circular arc arch produces continuous inwards bending deformation under the exogenic action, warp stable in structure, can avoid circular arc arch height to reduce and influence heat exchange efficiency.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic structural diagram of an evaporation and condensation dual-purpose efficient heat exchange tube according to an embodiment;

fig. 2 is an enlarged view at a in fig. 1.

Detailed Description

Reference will now be made in detail to the present embodiments of the present utility model, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present utility model, but not to limit the scope of the present utility model.

In the description of the present utility model, plural means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and the above, below, within, etc. are understood to include the present number. The description of the second is only for the purpose of distinguishing between technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the present utility model, unless clearly defined otherwise, the terms "disposed," "mounted," "connected," and the like are to be construed broadly and may be connected directly or indirectly through an intermediary; the connecting device can be fixedly connected, detachably connected and integrally formed; may be a mechanical connection; may be a communication between two elements or an interaction between two elements. The specific meaning of the words in the utility model can be reasonably determined by a person skilled in the art in combination with the specific content of the technical solution.

Referring to fig. 1-2, the evaporation and condensation dual-purpose efficient heat exchange tube provided by the application comprises a copper tube 1, wherein a first internal thread 11 is arranged on the inner wall of the copper tube 1, the tooth-shaped groove bottom of the first internal thread 11 is arc-shaped, an outer fin 12 is arranged on the outer wall of the copper tube 1, a turbulent groove 13 is arranged in the middle of the first internal thread 11 along the spiral direction of the first internal thread, the first internal thread 11 forms arc arches on two sides of the turbulent groove 13, and an arc opening of the arc arch faces the inner wall of the copper tube 1.

In this embodiment, the cross section of the turbulent flow groove 13 is circular, and when the arc arch expands, the pipe expander can produce continuous inward bending deformation under the action of external force on the arc arch acting on the first internal thread, so that the deformation structure is stable, and meanwhile, the influence on the heat exchange efficiency caused by the reduction of the height of the arc arch can be avoided.

Preferably, the inner wall of the copper pipe 1 is further provided with a second internal thread 14, the tooth height of the second internal thread 14 is smaller than that of the first internal thread 11, the first internal thread 11 and the second internal thread 14 are sequentially staggered along the axial direction of the copper pipe 1, and the first internal thread supports the pipe expander to expand the pipe, so that the surface area of the inner wall of the copper pipe body is not reduced.

Of course, the present utility model is not limited to the above-described embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present utility model, and these equivalent modifications and substitutions are included in the scope of the present utility model as defined in the appended claims.

Claims (4)

1. The utility model provides a dual-purpose high-efficient heat exchange tube of evaporation condensation, its characterized in that, includes copper pipe (1), be equipped with first internal thread (11) on the inner wall of copper pipe (1), the tooth tank bottom of first internal thread (11) is convex, be equipped with outer fin (12) on the outer wall of copper pipe (1), the middle part of first internal thread (11) is equipped with turbulent flow groove (13) along its spiral direction, just first internal thread (11) are in the both sides of turbulent flow groove (13) form the circular arc arch, the arc mouth orientation of circular arc arch the inner wall of copper pipe (1).

2. The evaporation and condensation dual-purpose efficient heat exchange tube as claimed in claim 1, wherein the cross section of the turbulent flow groove (13) is circular.

3. The evaporation and condensation dual-purpose efficient heat exchange tube as claimed in claim 1, wherein a second internal thread (14) is further arranged on the inner wall of the copper tube (1), and the tooth height of the second internal thread (14) is smaller than that of the first internal thread (11).

4. The evaporation and condensation dual-purpose efficient heat exchange tube as claimed in claim 3, wherein the first internal threads (11) and the second internal threads (14) are sequentially staggered along the axial direction of the copper tube (1).