CN202660814U - Heat exchanging fin for air conditioning heat exchanger and combined heat exchanging fin - Google Patents

Abstract

The utility model discloses a heat exchanging fin and a combined heat exchanging fin for an air conditioner heat exchanger. The heat exchanging fins for air conditioner heat exchangers are characterized in that: the heat exchanging fins include several heat exchanging units, and the heat exchanging units include an L-shaped structure and a collar for cooperating with the pipeline for transferring the refrigerant of the air conditioner; The L-shaped structure is composed of several L-shaped structural blocks, and the collar is used in conjunction with the pipeline for conveying the refrigerant of the air conditioner. A plurality of L-shaped structural blocks are arranged on the heat exchanging fins of the air conditioner heat exchanger of the utility model. When the air encounters the L-shaped structural block, due to the reaction force of the L-shaped structural block, the reflection of the air is used to change the flow direction of the air, and it concentrates around the heat exchanger pipes, fully exerting the heat exchange effect of the air. At the same time, due to the existence of the L-shaped structural block, the wake area behind the tube is reduced, and the heat exchange effect of the heat exchange fins is further improved.

Description

Heat exchange fin and combined heat exchange fin for air conditioner heat exchanger

technical field

The utility model relates to the technical field of air conditioner manufacturing, in particular to a heat exchange fin and a combined heat exchange fin for an air conditioner heat exchanger. the

Background technique

In order to build a "saving" society, people pay more and more attention to the energy saving of air conditioners, and improving the energy efficiency of heat exchangers has become the key to energy saving of air conditioners. the

In order to improve the energy efficiency of the air conditioner, measures such as increasing the heat exchange area of the heat exchanger and increasing the air volume are generally adopted, and these measures greatly increase the manufacturing cost of the air conditioner. In the research of tube-fin heat exchangers, it is found that the heat transfer performance of the heat exchanger mainly depends on the thermal resistance of the heat transfer fins in contact with the air, and the heat transfer resistance of the air side accounts for about 80% of the thermal resistance of the entire heat exchanger. Therefore, the enhancement of the performance of the air side has always been the focus of research, while the enhancement of the air side focuses on the heat exchange around the tubes of the tube-fin heat exchanger, and the heat exchange effect of the current tube-fin heat exchanger is general. the

In the prior art, the heat exchange fins basically cannot change the flow direction of the air, and the air usually flows perpendicular to the fins, and the area with the best heat exchange effect of the heat exchange fins is around the tube; The heat fins are less efficient. the

Utility model content

The technical problem to be solved by the utility model patent is to provide a heat exchange fin and a combined heat exchange fin for an air conditioner heat exchanger with enhanced heat exchange performance. the

In order to solve the above technical problems, the technical solution adopted by the utility model is: a heat exchange fin for air conditioner, which is characterized in that: the heat exchange fin is composed of several heat exchange units, wherein each heat exchange unit contains an L-shaped structure and a collar between the L-shaped structures, and the collar is used in conjunction with the pipeline for conveying the refrigerant of the air conditioner. the

Preferably, the L-shaped structure includes a left L-shaped structure group and a right L-shaped structure group composed of the same number of L-shaped structure blocks; the left L-shaped structure group and the right L-shaped structure group both include A plurality of L-shaped structural layers; the L-shaped structural layers are arranged obliquely; air passages are formed between the adjacent L-shaped structural layers. the

Preferably, the angle α2 between the left L-shaped structural layer and the horizontal plane is 120°±1°. the

Preferably, the left L-shaped structure group and the right L-shaped structure group of the adjacent L-shaped structural units are distributed symmetrically along the center of the collar. the

Preferably, the left L-shaped structure group, the right L-shaped structure group and the air channels of the same L-shaped structure unit are distributed in a "eight" shape on the plane of the heat exchange fins, and the air The channel L2 is 0.8-1.03mm. the

Preferably, the L-shaped structural layer includes L-shaped structural blocks in different numbers, the width L1 of the L-shaped structural block is 2-2.5 mm, the height H1 is 0.7-0.8 mm, and the bending angle α1 is 90°± 1 o. the

Preferably, the collar comprises a first flared ring, a second flared ring and a collar hole; one end of the second flared ring is connected to the collar hole, and the other end is connected to the As for the heat exchanging fins, one end of the first trumpet-shaped ring is connected to the collar hole, and the other end is an opening. the

Preferably, the height H2 of the collar hole is 1.1-1.6 mm, and the ring transition radii R4 and R5 of the first flared ring and the second flared ring are both 0.3 mm±0.05 mm. the

Preferably, the center-to-center distance Pt between the adjacent collars is 19-21 mm, the inner diameter D of the collar holes is 5.2-5.3 mm; the width Pw of the heat exchange fins is 11-13.6 mm. the

A combined heat exchange fin includes several heat exchange fins mentioned above.

Compared with the prior art, the utility model has the following beneficial effects: multiple L-shaped structural blocks are arranged on the heat exchanging fins of the air conditioner heat exchanger of the utility model. When the air encounters the L-shaped structural block, due to the reaction force of the L-shaped structural block, the reflection of the air is used to change the flow direction of the air, and it concentrates around the heat exchanger pipes, fully exerting the heat exchange effect of the air. At the same time, due to the existence of the L-shaped structural block, the wake area behind the tube is reduced, and the heat exchange effect of the heat exchange fins is further improved. In addition, since there is an air channel with a certain width between the L-shaped structural blocks, it can guide the air to a certain extent and generate a turbulent flow effect, which helps to improve the heat exchange capacity of the heat exchange fins. In addition, the left L-shaped structure group composed of L-shaped structural blocks, the right L-shaped structural group and the air passages are symmetrically distributed on the heat exchange fins in a similar "eight" shape, and the L-shaped structural blocks are arranged obliquely; when the air passes through At this time, the windward face of the L-shaped structural block has a certain cutting effect on the air, thereby continuously destroying the boundary layer of the air, reducing the thermal resistance of the air, and making full use of the air on the entire surface of the heat transfer fins, further improving the heat transfer performance of the heat transfer fins. heat transfer efficiency. the

Description of drawings

Fig. 1 is a plan view of the heat exchange fin structure of the heat exchange fin used in the air conditioner heat exchanger of the present invention;

Fig. 2 is the right view of the heat exchanging fins of the heat exchanging fins used in the air conditioner heat exchanger of the present invention;

Fig. 3 is a B-B sectional view of the L-shaped structural block of Fig. 1;

Fig. 4 is the structural distribution diagram of the L-shaped structural unit of the heat exchange fin used in the air conditioner heat exchanger of the present invention;

Fig. 5 is a composition diagram of the collar 200 of the heat exchange fin used in the air conditioner heat exchanger of the present invention;

Fig. 6 is a structural schematic diagram of multiple rows of heat exchanging fins for the heat exchanging fins of the air conditioner heat exchanger of the present invention.

Detailed ways

The utility model will be further described in detail below in conjunction with the embodiments and accompanying drawings, but the implementation of the utility model is not limited thereto. the

As shown in Figures 1, 2, 3, 4, 5 and 6, a heat exchange fin for an air conditioner heat exchanger, the heat exchange fin 1 includes several heat exchange units, wherein each heat exchange unit contains an L-shaped structure 100 and The collar 200 between the L-shaped structures, the collar 200 is used in cooperation with the pipeline for conveying the refrigerant of the air conditioner. the

The L-shaped structure includes a left L-shaped structure group 110 and a right L-shaped structure group 120 composed of the same number of L-shaped structure blocks; the left L-shaped structure group 110 and the right L-shaped structure group 120 each include several L-shaped structures Structural layers 111; L-shaped structural layers 111 are arranged obliquely; air channels 300 are formed between adjacent L-shaped structural layers. As shown in Figure 1, E is the direction of air flow. the

The angle α2 between the left L-shaped structure layer 111 and the horizontal plane is 120°±1°. The left L-shaped structure group 110 and the right L-shaped structure group 120 of adjacent L-shaped structural units are distributed symmetrically along the center of the collar. The L-shaped structure layers and air passages of the left L-shaped structure group 110 and the right L-shaped structure group 120 of the same L-shaped structure unit are arranged in a shape similar to "eight" on the heat exchange fin plane. The L-shaped structural layer includes L-shaped structural blocks 112 in varying numbers. The width L1 of the L-shaped structural block 112 is 2-2.5 mm, the height H1 is 0.7-0.8 mm, and the bending angle α1 is 90°±1°. The collar 200 includes a first bell-shaped ring 201, a second bell-shaped ring 203 and a collar hole 202; one end of the second bell-shaped ring 203 is connected to the collar hole 202, and the other end is connected to the heat exchange fin. One end of the first trumpet-shaped ring 201 is connected to the collar hole 202, and the other end is an opening. The height H2 of the collar hole 202 is 1.1-1.6 mm, and the ring transition radii R4 and R5 of the first flared ring 201 and the second flared ring 203 are both 0.3 mm±0.05 mm. The center-to-center distance Pt between adjacent collars 200 is 19-21 mm, and the inner diameter D of the collar hole 202 is 5.2-5.3 mm. The width Pw of the heat exchange fin 1 is 11-13.6 mm. the

All the L-shaped structural blocks 112 in the left L-shaped structural group or the right L-shaped structural group are identical. From a horizontal perspective, the first row 113 is composed of three L-shaped structural blocks 112, the second row 114 is composed of three L-shaped structural blocks 112, the third row 115 is composed of two L-shaped structural blocks 112, and the fourth The row 116 is composed of three L-shaped structural blocks 112, and each row is arranged in parallel at equidistant intervals. The above-mentioned L-shaped structural blocks are distributed and arranged in order of 3, 2, 3, and 3 from the edge of the heat exchange fins. The width L1 of the L-shaped structural block is 2 to 2.5 mm, and the bending angle α1 is 90 o±1 o. the

The gap L2 between adjacent L-shaped structural layers 111 is 0.8-1.03mm, and the gap forms the air channel 300. The L-shaped structural layers and air channels 300 of the left L-shaped structure group 110 and the right L-shaped structure group 120 of the same L-shaped structural unit are distributed in a shape similar to "eight" on the plane of the heat exchange fins. The width L3 of the L-shaped structural block 112 is 0.7-0.8 mm, and the angle α2 between the inclination of the left L-shaped structural layer and the horizontal plane is 120o±1 o

The collar 200 includes a first trumpet-shaped circular ring 201 , a collar hole 202 , and a second trumpet-shaped circular ring 203 . One end of the second trumpet-shaped ring 203 is connected to the collar hole 202 , and the other end is connected to the heat exchange fin. One end of the first bell-mouth-shaped ring 201 is connected to the collar hole 202 , and the other end is an open structure. The height H2 of the collar hole 202 is 1.1-1.6mm, and the ring transition radii R4 and R5 of the first flared ring 201 and the second flared ring 203 are 0.3mm±0.05mm.

A plurality of L-shaped structural blocks are arranged on the heat exchange fins of the utility model. Compared with the existing technology, due to the reaction force of the L-shaped structural block, the reflection of the air is used to change the flow direction of the air, and it is concentrated around the heat exchanger pipe to fully exert the heat exchange effect of the air. At the same time, the L-shaped The existence of the structural block reduces the wake area behind the tube and improves the heat transfer effect of the heat exchange fins; in addition, there is an air channel with a certain width between the L-shaped structural blocks, which plays a certain role in guiding the air and generating turbulent flow The effect is helpful to improve the heat transfer capacity of the heat transfer fins. In addition, the left L-shaped structure group and the right L-shaped structure group composed of L-shaped structural blocks and the air channels are symmetrically distributed on the heat exchange fins in a similar "eight" shape, and the L-shaped structural blocks are arranged obliquely; the air passes through At this time, the windward face of the L-shaped structural block has a certain cutting effect on the air, constantly destroying the boundary layer of the air, reducing the thermal resistance of the air, making the air fully utilized on the entire surface of the heat exchange fins, and further improving the performance of the heat exchange fins. heat transfer efficiency. the

Example 2

This embodiment is the same as Embodiment 1 except for the following features: As shown in Figure 6, the combined heat transfer fins are expanded with the heat transfer fins 1 in Embodiment 1 as a unit to form double rows, three rows or More rows of combined heat exchange fins can also be combined with heat exchange fins in other structural forms to form combined heat exchange fins.

The above-mentioned embodiments are only preferred embodiments of the present utility model, and are not intended to limit the implementation scope of the present utility model. That is, all equivalent changes and modifications made according to the content of the utility model are covered by the scope of protection required by the claims of the utility model. the

Claims (10)

1. air-condition heat exchanger heat exchange fin, it is characterized in that, described heat exchange fin (1) is comprised of some heat exchange units, wherein each heat exchange unit contains L shaped structure (100) and the collar between L shaped structure (200), and the described collar (200) is used with the pipeline that described air-conditioner transmits refrigerant.

2. air-condition heat exchanger heat exchange fin according to claim 1 is characterized in that: described L shaped structure (100) comprises the L shaped structural group in left side (110) and the L shaped structural group in right side (120) that the L shaped block structure by equal number forms; The L shaped structural group in described left side (110) includes some L shaped structure sheafs (111) with the L shaped structural group in right side (120); Described L shaped structure sheaf (111) is obliquely installed; Form air duct (300) between the described adjacent L shaped structure sheaf.

3. air-condition heat exchanger heat exchange fin according to claim 2 is characterized in that: the L shaped structure sheaf in described left side (111) is 120o ± 1 o with the angle α 2 of horizontal plane.

4. air-condition heat exchanger heat exchange fin according to claim 3 is characterized in that: the L shaped structural group in the left side of described adjacent L shaped structure (110) distributes along the collar (200) Central Symmetry with the L shaped structural group in right side (120).

5. air-condition heat exchanger heat exchange fin according to claim 4, it is characterized in that: the L shaped structural group in the left side of same L shaped construction unit (110), the L shaped structural group in right side (120) are class " eight " font with described air duct (300) and distribute on described heat exchange fin plane, described air duct L2 is 0.8～1.03mm.

6. each described air-condition heat exchanger heat exchange fin according to claim 3-5, it is characterized in that: described L shaped structure sheaf comprises the L-type block structure (112) that quantity does not wait, the width L1 of described L-type block structure (112) is 2～2.5mm, height H 1 is 0.7～0.8mm, and bending angle α 1 is 90 o ± 1 o.

7. air-condition heat exchanger heat exchange fin according to claim 6 is characterized in that: the described collar (200) comprises the first bell mouth shape annulus (201), the second bell mouth shape annulus (203) and cover annular distance (202); Described the second bell mouth shape annulus (203) one ends connect described cover annular distance (202), and the other end is connected with described heat exchange fin, and described the first bell mouth shape annulus (201) one ends connect described cover annular distance (202), and the other end is opening.

8. air-condition heat exchanger heat exchange fin according to claim 7, it is characterized in that: the height H 2 of described cover annular distance (202) is 1.1～1.6mm, and annulus knuckle radius R4, the R5 of the first bell mouth shape annulus (201), the second bell mouth shape annulus (203) are 0.3mm ± 0.05 mm.

9. air-condition heat exchanger heat exchange fin according to claim 8, it is characterized in that: the center distance Pt between the described adjacent collar (200) is 19～21mm, cover annular distance inside diameter D is 5.2～5.3mm.

10. a combination heat exchange fin comprises some such as the described heat exchange fin of claim 1-9 any one.

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