阅读说明：本技术 换热管及换热器 (Heat exchange tube and heat exchanger ) 是由 刘华 张治平 胡东兵 胡海利 陈锦贤 于 2019-11-14 设计创作，主要内容包括：本发明公开了一种换热管及换热器,包括管体、导流块,导流块设有冷媒通道,冷媒通道包括折流面,导流块间隔套设在导杆上,导杆的两端设有倒角,换热管还包括第一挡嘴和第二挡嘴,第一挡嘴包括直径沿冷媒流动方向递减的冷媒入口,第二挡嘴包括直径沿冷媒流动方向递减的冷媒出口,相邻的两个导流板之间的冷媒通道相互错开。与现有技术相比,本发明通过在管体内间隔的设置了若干个导流块,导流块具有扰流的作用,冷媒可以从导流块上的冷媒通道流过,当冷媒流经冷媒通道的折流面后发生波动,冷媒朝向管体的内壁的方向快速流动,进而与管体内壁之间进行高摩擦力度以减小换热管表面的热阻,进而提高了换热性能。(The invention discloses a heat exchange tube and a heat exchanger, which comprise a tube body and a flow guide block, wherein the flow guide block is provided with a refrigerant channel, the refrigerant channel comprises a baffling surface, the flow guide block is sleeved on a guide rod at intervals, chamfers are arranged at two ends of the guide rod, the heat exchange tube further comprises a first blocking nozzle and a second blocking nozzle, the first blocking nozzle comprises a refrigerant inlet with the diameter decreasing progressively along the refrigerant flowing direction, the second blocking nozzle comprises a refrigerant outlet with the diameter decreasing progressively along the refrigerant flowing direction, and the refrigerant channels between two adjacent flow guide plates are staggered. Compared with the prior art, the heat exchange tube has the advantages that the plurality of flow guide blocks are arranged in the tube body at intervals, the flow guide blocks have the turbulent flow effect, a refrigerant can flow through the refrigerant channel on the flow guide blocks, and when the refrigerant fluctuates after flowing through the baffling surface of the refrigerant channel, the refrigerant rapidly flows towards the inner wall of the tube body, so that high friction force is performed between the refrigerant and the inner wall of the tube body to reduce the thermal resistance on the surface of the heat exchange tube, and the heat exchange performance is improved.)

1. The utility model provides a heat exchange tube, includes the body, its characterized in that still includes: locate a plurality of water conservancy diversion piece inside the body, the water conservancy diversion piece is followed the axial interval of body is arranged, every the refrigerant passageway of interval arrangement is seted up on the surface of water conservancy diversion piece.

2. The heat exchange tube of claim 1, wherein the refrigerant channel penetrates through both end surfaces of the flow guide block, and at least one side surface of the refrigerant channel is a baffling surface, and the baffling surface is obliquely arranged so that the size of the refrigerant channel is gradually reduced along the refrigerant flowing direction.

3. The heat exchange tube of claim 2, wherein two opposite side surfaces of the refrigerant channel are parallel to each other, and the other side surface of the refrigerant channel connected between the two side surfaces is a baffling surface.

4. A heat exchange tube according to any one of claims 1 to 3, wherein the surface of the flow guide block is in clearance fit or fitting contact with the inner wall of the tube body.

5. The heat exchange tube of claim 1, wherein the tube body further comprises a guide rod penetrating the tube body, and the plurality of guide blocks are sleeved on the guide rod at intervals.

6. The heat exchange tube of claim 1, wherein both ends of the guide rod are chamfered.

7. The heat exchange tube of claim 1, further comprising a first lip at a refrigerant inflow end and a second lip at a refrigerant outflow end thereof.

8. The heat exchange tube of claim 7, wherein the first baffle nozzle comprises a refrigerant inlet, and the diameter of the refrigerant inlet is gradually reduced along the refrigerant flowing direction; the second nozzle comprises a refrigerant outlet, and the diameter of the refrigerant outlet decreases progressively along the refrigerant flowing direction.

9. The heat exchange tube of claim 1, wherein the refrigerant channels between two adjacent flow guide blocks are staggered.

10. A heat exchanger comprising the heat exchange tube as recited in any one of claims 1 to 9.

Technical Field

The invention relates to the technical field of air conditioners, in particular to a heat exchange tube and a heat exchanger.

Background

The dry evaporator is an important component in an air-conditioning refrigeration system, is generally applied to various fields due to the characteristic of strong adaptability, but has great improvement space for the performance due to incomplete structural design. Research finds that the problem that the performance of the dry evaporator is influenced most is the flowing state of a refrigerant in the heat exchange tube, the probability of contact between the liquid refrigerant and the tube wall can be increased by increasing the disturbance of the refrigerant, and further the heat exchange efficiency of the dry evaporator can be improved.

Disclosure of Invention

The invention provides a heat exchange tube and a heat exchanger, which effectively solve the technical problem of poor heat exchange performance of the existing heat exchange tube due to poor turbulence effect of an internal refrigerant.

The technical scheme of the invention is as follows: a heat exchange tube, comprising a tube body, further comprising: locate a plurality of water conservancy diversion piece inside the body, the water conservancy diversion piece is followed the axial interval of body is arranged, every the refrigerant passageway of interval arrangement is seted up on the surface of water conservancy diversion piece.

The refrigerant channel penetrates through the two end faces of the flow guide block, at least one side face of the refrigerant channel is a baffling face, and the baffling face is obliquely arranged so that the size of the refrigerant channel is gradually reduced along the refrigerant flowing direction.

Two opposite side surfaces on the refrigerant channel are parallel to each other, and the other side surface connected between the two side surfaces on the refrigerant channel is a baffling surface.

The surface of the flow guide block is in clearance fit or fit contact with the inner wall of the pipe body.

The pipe body is also internally provided with a guide rod which is arranged in the pipe body in a penetrating way, and the guide rods are sleeved with the plurality of flow guide blocks at intervals.

Chamfers are arranged at two ends of the guide rod.

The heat exchange tube also comprises a first blocking nozzle arranged at the refrigerant inflow end of the heat exchange tube and a second blocking nozzle arranged at the refrigerant outflow end of the heat exchange tube.

The first blocking nozzle comprises a refrigerant inlet, and the diameter of the refrigerant inlet is gradually reduced along the refrigerant flowing direction; the second nozzle comprises a refrigerant outlet, and the diameter of the refrigerant outlet decreases progressively along the refrigerant flowing direction.

Refrigerant channels between two adjacent guide blocks are staggered.

A heat exchanger comprises the heat exchange tube.

Compared with the prior art, the invention has the advantages that: according to the invention, the plurality of flow guide blocks are arranged in the pipe body at intervals, the flow guide blocks have a turbulent flow effect, a refrigerant can flow through the refrigerant channel on the flow guide blocks, and when the refrigerant fluctuates after flowing through the baffling surface of the refrigerant channel, the refrigerant rapidly flows towards the inner wall of the pipe body, so that high friction force is performed between the refrigerant and the inner wall of the pipe body to reduce the thermal resistance on the surface of the heat exchange pipe, and the heat exchange performance is further improved.

Drawings

FIG. 1 is a schematic view of the structure of a heat exchange tube according to the present invention;

FIG. 2 is a schematic diagram of an exploded structure of a heat exchange tube (tube body not shown) in the present invention;

fig. 3 is a schematic cross-sectional structure diagram of a flow guide block in the present invention;

fig. 4 is a schematic diagram showing a cross-sectional structure of a heat exchange tube according to the present invention.

Detailed Description

The principles and construction of the present invention will be described in detail below with reference to the drawings and examples.

The invention provides a heat exchange tube, as shown in fig. 1, 2 and 4, the heat exchange tube of the invention comprises a tube body 1, wherein the tube body 1 is a conventional heat exchange tube structure in the industry at present, namely a round tube with a thread on the inner wall, and the heat exchange tube of the invention also comprises: the guide rod 2 is arranged in the pipe body 1 in a penetrating way; the guide block 3, the guide block 3 cover is established on the guide arm 2, and the guide block 3 is equipped with a plurality of, and a plurality of guide block 3 is separated by the setting on the guide arm 2, and every guide block 3 is gone up the interval and has been set up a plurality of refrigerant passageway 31, and refrigerant passageway 31 produces the vortex effect to the refrigerant through it.

Specifically, the guide rod 2 is a strip-shaped rod with the diameter smaller than that of the pipe body 1, the guide rod 2 is a solid rod, two chamfers are respectively arranged at two ends of the guide rod 2, and the chamfers are arranged to facilitate the flow of the refrigerant from the end part of the guide rod 2; the guide blocks 3 are arranged on the guide rod 2 at intervals, the guide blocks 3 and the guide rod 2 are arranged separately in the embodiment, and the guide rod 2 and the guide blocks 3 are fixed together in a welding mode, a bonding mode, a sleeve positioning mode and the like.

As shown in fig. 3 and 4, the flow guide block 3 is of an annular structure, a refrigerant channel 31 is arranged on the outer circumference of the flow guide block 3, the refrigerant channel 31 is specifically provided as a port formed on the outer surface of the flow guide block 3, the refrigerant channel 31 penetrates through the outer surface of the flow guide block 3, that is, the refrigerant channel 31 communicates with two ends of the flow guide block 3, wherein the refrigerant channel 31 also includes a plurality of refrigerant channels, and the plurality of refrigerant channels are spaced and uniformly distributed along the circumferential direction of the flow guide block 3; at least one side surface of the refrigerant channel is a baffle surface, the baffle surface is obliquely arranged to enable the size of the refrigerant channel to be gradually reduced along the flowing direction of the refrigerant, so that the refrigerant is sprayed out of the refrigerant channel, wherein the refrigerant channel 31 in the embodiment comprises the baffle surface 311, the baffle surface 311 is arranged at the bottom of the refrigerant channel 31 (the bottom surface between the two side surfaces of the refrigerant channel), the baffle surface 311 is obliquely arranged, the baffle surface 311 is upward inclined along the flowing direction of the refrigerant, when the right surface of the flow guide block 3 is the flowing end of the refrigerant, the baffle surface 311 is upward inclined from the right end to the left end of the flow guide block 3, the flow guide block 3 is positioned inside the pipe body 1 in actual use, the baffle surface 311 of the refrigerant channel 31 is opposite to the inner wall of the pipe body 1, the baffle plate 311 is inclined towards the inner wall of the pipe body 1 along the flowing direction of the refrigerant, so that the baffle surface is fluctuated towards the inner wall of the pipe body 1 when the, the heat exchange with high friction force between the refrigerant and the heat exchange tube is realized, the thermal resistance on the surface of the heat exchange tube is reduced, and the heat exchange efficiency is further improved.

It should be noted that the inclination angle of the baffle surface 311 can be designed according to actual requirements, and it is mainly adjusted according to pressure drop requirements, for example, when the inclination angle is designed to be large, the fluctuation of the refrigerant is more severe, and the baffle surface is suitable for an environment with a higher requirement on heat exchange performance, and when the inclination angle of the baffle surface 311 is designed to be small, the fluctuation of the refrigerant is more smooth.

As shown in fig. 1 and 2, two ends of a tube body 1 are respectively provided with a blocking nozzle, wherein the left end of the tube body 1 is an inflow end of a refrigerant, the right end of the tube body 1 is an outflow end of the refrigerant, the left end of the tube body 1 is provided with a first blocking nozzle 11, the right end of the tube body 1 is provided with a second blocking nozzle 12, the first blocking nozzle 11 and the second blocking nozzle 12 are respectively arranged at two ends of the tube body 1, and a guide rod 2 is communicated with a guide block 3 and blocked in the tube body 1, so that the guide rod 2 and/or the guide block 3 is prevented from being separated from the tube body 1, and the first blocking nozzle 11 and the second blocking nozzle 12 both comprise an extending end with a smaller diameter extending into the tube body 1 and a clamping end with a larger diameter blocking outside the tube body 1; in addition, the first nozzle 11 is further provided with a refrigerant inlet 111 leading to the inside of the tube body 1, wherein the refrigerant inlet 111 is in a trumpet shape with the diameter decreasing from one end to the other end, the refrigerant flows in from the large-diameter end of the refrigerant inlet 111 and flows into the tube body 1 from the small-diameter end, the second nozzle 12 is arranged at the refrigerant outflow end of the tube body 1 and comprises a refrigerant outlet 121, the refrigerant outlet 121 is also in a trumpet shape with the diameter decreasing from one end to the other end, the refrigerant flows in from the large-diameter end of the refrigerant outlet 121 to the refrigerant outlet 121 and flows out from the small-diameter end, and the refrigerant inlet 111 and the refrigerant outlet 121 have the function of guiding the flow.

Preferably, the present invention has a plurality of flow guide blocks 3 arranged at intervals, each flow guide block 3 has a plurality of refrigerant channels 31 arranged at intervals, and the refrigerant channels 31 on two adjacent flow guide blocks 3 are staggered with each other, that is, the refrigerant channel 31 on the previous flow guide block 3 and the refrigerant channel 31 on the next flow guide block 3 are not in the same straight direction, so that the flow guide blocks 3 have stronger turbulent flow effect on the refrigerant, and further, the heat exchange efficiency is higher.

Further, the flow guide block 3 in the embodiment is in contact with the inner wall of the pipe body 1, and the flow guide block 3 is fixed to the inner wall of the pipe body 1 by welding, bonding or other common methods, so that the heat exchange pipe is more stable.

The principle of the invention is as follows: the guide blocks 3 with the inclined baffling surfaces 311 are axially arranged on the guide rod 2 at intervals, when a plurality of broken line type refrigerant channels 31 can be formed, after liquid refrigerants flow through the broken line type refrigerant channels 31, the refrigerants cause strong fluctuation, the refrigerants excited by the fluctuation perform heat exchange with the inner wall of the heat exchange tube with high friction, so that the surface thermal resistance of the heat exchange tube is reduced, the turbulent flow effect of the heat exchange tube is improved by arranging the guide rod, the guide blocks 3 and other structures in the tube body 1, and the heat exchange performance of the heat exchange tube is greatly improved.

The invention also provides a heat exchanger which uses the heat exchange tube provided by the invention.

The above specific embodiments are only intended to illustrate the inventive concept and many modifications and variations may be made by those skilled in the art within the spirit of the invention, which are included within the scope of the invention.