CN217005491U

CN217005491U - High-efficiency heat transfer copper alloy pipe for evaporator

Info

Publication number: CN217005491U
Application number: CN202220030880.7U
Authority: CN
Inventors: 陈凌芬
Original assignee: Changshu Zhongjia New Material Co ltd
Current assignee: Changshu Zhongjia New Material Co ltd
Priority date: 2022-01-07
Filing date: 2022-01-07
Publication date: 2022-07-19
Anticipated expiration: 2032-01-07

Abstract

The utility model discloses a high-efficiency heat transfer copper alloy pipe for an evaporator, which comprises a copper alloy pipe body, a copper alloy particle layer and an internal threaded rib, wherein the internal threaded rib is formed by extending materials on the copper alloy pipe body along the radius direction of a body and extending the materials on the inner surface of the body in a spiral state around the body and is integrated with the body, the copper alloy particle layer and the copper alloy pipe body are fused and adhered at high temperature to form an integrated structure, the copper alloy has strong corrosion resistance, and the copper alloy particle layer consists of a first copper alloy particle layer, a second copper alloy particle layer and a third copper alloy particle layer. Copper alloy particles are divided into three particle layers of different numbers and sizes, namely fine particles, medium particles and coarse particles, fine particles in the inner layer can generate more vaporization cores under the evaporation working condition, and small bubbles are trapped and stored by two layers and finally overflow. Therefore, the vapor bubbles take away more heat, and the evaporation heat transfer performance of the heat transfer pipe is optimized to the maximum extent.

Description

High-efficiency heat transfer copper alloy pipe for evaporator

Technical Field

The utility model belongs to the technical field of evaporation heat exchange tubes in air conditioners and refrigeration systems, and particularly relates to a high-efficiency heat transfer copper alloy tube for an evaporator, which is suitable for enhancing evaporation heat exchange outside the tube to save energy.

Background

The heat exchange tube structure for the evaporator in the prior art is as follows: spiral fins protruding from the surface of the tube body and integrally formed with the tube body are formed on the outer wall of the tube body in a spiral state along the longitudinal direction of the tube body by machining, tooth platforms are formed on the spiral fins, and an inverted pocket extending along the circumferential direction of the tube body is formed between two adjacent spiral fins. The heat exchange tube structure is beneficial to intercepting small bubbles, so that the bubbles grow up rapidly and overflow rapidly, and the heat exchange tube structure has positive significance for increasing heat transfer and strengthening boiling evaporation heat exchange.

In many fields such as refrigeration, air conditioning engineering, energy and power engineering and the like, the evaporation of liquid on the outer surface of a tube bundle is involved, and particularly, the evaporation is carried out on refrigeration units of refrigeration and air conditioning systems with certain corrosive environments. Because the copper material has better plasticity, for refrigerating units of refrigeration and air-conditioning systems with corrosive environments, in order to reduce the cost, the evaporator generally adopts a common flooded evaporating copper alloy pipe, the evaporator is mostly machined into a fin and groove structure with a three-dimensional structure on the outer surface by mechanical extrusion, the evaporating pipe has the defects that the structural size precision of an outer surface hole formed by the machined fin or groove is poor, the integral uniformity is poor, some outer surface holes do not generate and overflow steam bubbles to transfer heat, and the size precision cannot reach 10um level, so the evaporating heat transfer performance cannot be maximized, meanwhile, the corrosion resistance of the common copper material is weak, and the situation must be deeply researched and changed. The applicant has made active and beneficial designs for enhancing the effective expansion of the liquid film on the outer surface of the tube to enhance the falling film evaporation process, and finally has developed the technical scheme described below.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model provides the following technical scheme: the utility model provides a high-efficient heat transfer copper alloy pipe that evaporimeter was used, includes copper alloy body, copper alloy grained layer and by the material on the copper alloy body along the radial direction extension of body and the internal surface of body around the body be spiral state extend form become integrative internal thread rib with the body, its characterized in that: the copper alloy particle layer and the copper alloy pipe body are fused and adhered at high temperature to form an integral structure, and the copper alloy particle layer is composed of a first copper alloy particle layer, a second copper alloy particle layer and a third copper alloy particle layer.

Further, the particle mesh number of the first copper alloy particle layer is 1050-.

Further, the thickness of the first copper alloy particle layer is 0.1-0.2mm, the thickness of the second copper alloy particle layer is 0.2-0.4mm, and the thickness of the third copper alloy particle layer is 0.5-1 mm.

Further, the material of the copper alloy pipe body is any one of iron white copper, aluminum brass and tin brass.

Further, the material of the copper alloy particle layer is any one of iron white copper, aluminum brass and tin brass.

Furthermore, the copper alloy particle layer and the copper alloy tube body are fused and adhered into an integral structure at the high temperature of 960-1060 ℃.

Further, the spiral included angle between the internal thread rib and the axis of the copper alloy pipe body is 35-65 degrees.

The utility model discloses a high-efficiency heat transfer copper alloy pipe for an evaporator, which has the following beneficial effects: the copper alloy particles and the copper alloy pipe body form an integrated structure in a high-temperature fusion bonding mode, so that the contact thermal resistance of materials can be avoided, an ideal hole structure can be obtained, the expected size precision of the hole structure can be achieved, the integral uniformity is good, and the good heat exchange performance outside the pipe can be guaranteed. The copper alloy particles are divided into three particle layers of different numbers and sizes, namely fine particles, medium particles and coarse particles, the fine particles on the inner layer can generate more vaporization cores under the evaporation working condition, so that more small bubbles in liquid are generated, the medium particles on the middle layer can intercept the small bubbles and convey heat to the small bubbles so as to further grow up the bubbles, and the coarse particles on the outer layer can further intercept the gradually growing bubbles and convey heat to the bubbles so as to rapidly overflow after further growing up. Through the structure, more small bubbles are generated in the evaporation process, and the small bubbles are intercepted by two layers and stored with energy and finally overflow. Therefore, the vapor bubble takes away more heat, and the evaporation heat transfer performance of the heat transfer pipe is optimized to the maximum extent.

Drawings

FIG. 1 is a schematic view of a high-efficiency heat-transfer copper alloy tube structure for an evaporator according to the present invention;

fig. 2 is an enlarged schematic view of a copper alloy particle layer structure I of a high-efficiency heat transfer copper alloy tube for an evaporator according to the present invention;

in the figure: 1-a copper alloy pipe body, 2-a copper alloy particle layer, 3-an internal threaded rib, 4-a first copper alloy particle layer, 5-a second copper alloy particle layer, and 6-a third copper alloy particle layer.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.

Example 1:

referring to fig. 1-2, the present invention provides a high efficiency heat transfer copper alloy tube for an evaporator, including a copper alloy tube body, a copper alloy particle layer, and an internal thread rib formed integrally with the copper alloy tube body, wherein the internal thread rib is formed by extending a material on the copper alloy tube body along a radial direction of the copper alloy tube body and spirally extending the material on an inner surface of the copper alloy tube body around the copper alloy tube body, the copper alloy particle layer and the copper alloy tube body are fused at a high temperature to form an integral structure, and the copper alloy particle layer is composed of a first copper alloy particle layer, a second copper alloy particle layer, and a third copper alloy particle layer.

The particle mesh number of the first copper alloy particle layer is 1050 meshes, the particle mesh number of the second copper alloy particle layer is 550 meshes, and the particle mesh number of the third copper alloy particle layer is 100 meshes.

The thickness of the first copper alloy particle layer is 0.2mm, the thickness of the second copper alloy particle layer is 0.4mm, and the thickness of the third copper alloy particle layer is 1 mm.

The copper alloy pipe body is made of iron white copper.

The copper alloy particle layer is made of iron white copper.

The copper alloy particle layer and the copper alloy pipe body are fused and bonded into an integral structure at the high temperature of 1060 ℃.

And the spiral included angle between the internal thread rib and the axis of the copper alloy pipe body is 35 degrees.

Example 2:

the number of the particles of the first copper alloy particle layer was 1300, the number of the particles of the second copper alloy particle layer was 750, and the number of the particles of the third copper alloy particle layer was 250.

The thickness of the first copper alloy particle layer was changed to 0.1mm, the thickness of the second copper alloy particle layer was changed to 0.2mm, and the thickness of the third copper alloy particle layer was changed to 0.5 mm.

The copper alloy pipe body is made of aluminum brass.

The copper alloy particle layer is made of aluminum brass.

And fusing and bonding the copper alloy particle layer and the copper alloy pipe body at 1060 ℃ to form an integral structure.

The spiral included angle between the internal thread rib and the axis of the copper alloy pipe body is 65 degrees.

Through the specific embodiment, the beneficial effects of the utility model are as follows: the copper alloy particles and the copper alloy pipe body form an integrated structure in a high-temperature fusion bonding mode, so that the thermal contact resistance of materials can be avoided, an ideal hole structure can be obtained, the expected size precision of the hole structure can be achieved, the integral uniformity is good, the problem that the holes on the outer part surface do not generate steam bubbles to transfer heat is avoided, and the good heat exchange performance of the outer side of the pipe is guaranteed. Meanwhile, the copper alloy particles outside the tube body are composed of three particle layers of different numbers and sizes, namely fine particles, medium particles and coarse particles, the fine particles on the inner layer can generate more vaporization cores under the evaporation working condition, so that more small bubbles in liquid are generated, the medium particles on the middle layer can intercept the small bubbles and convey heat to the small bubbles so as to further grow the bubbles, and the coarse particles on the outer layer can further intercept the gradually growing bubbles and convey heat to the bubbles so as to rapidly overflow after further growing. Through the structure, more small bubbles are generated in the evaporation process, and the small bubbles are intercepted by two layers and stored with energy and finally overflow. Therefore, the vapor bubbles take away more heat, and the evaporation heat transfer performance of the heat transfer pipe is optimized to the maximum extent.

While there have been shown and described what are at present considered to be the basic principles and essential features of the utility model and advantages thereof, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a high-efficient heat transfer copper alloy pipe that evaporimeter was used, includes copper alloy body (1), copper alloy grained layer (2) and by material on the copper alloy body (1) along the radial direction extension of body and be spiral state extension around the body at the internal surface of body and constitute integrative inside thread rib (3) with the body, its characterized in that: copper alloy grained layer (2) and copper alloy body (1) fuse through high temperature and glue and form an organic whole structure, copper alloy grained layer (2) comprise first copper alloy grained layer (4), second copper alloy grained layer (5) and third copper alloy grained layer (6).

2. The high efficiency heat transfer copper alloy tube for an evaporator according to claim 1, wherein: the particle mesh number of the first copper alloy particle layer (4) is 1050-.

3. The high-efficiency heat transfer copper alloy tube for an evaporator according to claim 1, characterized in that: the thickness of the first copper alloy particle layer (4) is 0.1-0.2mm, the thickness of the second copper alloy particle layer (5) is 0.2-0.4mm, and the thickness of the third copper alloy particle layer (6) is 0.5-1 mm.

4. The high efficiency heat transfer copper alloy tube for an evaporator according to claim 1, wherein: the copper alloy pipe body (1) is made of any one of iron white copper, aluminum brass and tin brass.

5. The high efficiency heat transfer copper alloy tube for an evaporator according to claim 1, wherein: the copper alloy particle layer (2) is made of any one of iron white copper, aluminum brass and tin brass.

6. The high efficiency heat transfer copper alloy tube for an evaporator according to claim 1, wherein: the copper alloy particle layer (2) and the copper alloy tube body (1) are fused and adhered at the high temperature of 960-1060 ℃ to form an integral structure.

7. The high efficiency heat transfer copper alloy tube for an evaporator according to claim 1, wherein: the spiral included angle between the internal thread rib (3) and the axis of the copper alloy pipe body (1) is 35-65 degrees.