Combined micro-channel evaporator for automobile air conditioner

Abstract

The utility model discloses a combined type micro-channel evaporator for an automobile air conditioner, which comprises a collecting pipe and a plurality of combined type heat exchange pipes, each combined type heat exchange pipe comprises an inner pipe and an outer pipe, the inner pipe is a straight pipe, the outer pipe is a micro-channel heat exchange plate wound into a barrel shape, the inner wall of the outer pipe abuts against the outer wall of the inner pipe, two ends of the outer pipe are respectively provided with a convex ring, and the convex rings are connected with the collecting pipe. Two convex rings are arranged in the outer pipe, a flow collecting cavity is formed in each of the two convex rings, the two ends of each micro-channel in the outer pipe are connected with the two flow collecting cavities respectively, joints communicated with the interiors of the flow collecting cavities are further arranged on the convex rings, and the two ends of the inner pipe extend out of the two convex rings respectively to form inserting ends; the two ends of each inner pipe are connected with the two first collecting pipes respectively, the two collecting cavities of each outer pipe are connected with the two second collecting pipes through the connecting pipes respectively, the two first collecting pipes are connected with a radiator of an automobile respectively, the two second collecting pipes are connected with an air conditioning system of the automobile respectively, and the working efficiency of an evaporator and the working efficiency of the radiator of the automobile can be improved at the same time.

Description

Technical Field

[0001] The utility model relates to a combined microchannel evaporator for an automotive air conditioner. Background Art

[0002] In the prior art, the radiator in the engine compartment of an automobile and the microchannel evaporator of the air conditioning system are two separate components. When the radiator works, it needs to dissipate heat, and when the evaporator works, it needs to absorb heat. If these two components are organically combined, the working efficiency of both the radiator and the evaporator can be improved simultaneously. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies of the above prior art and provide a combined microchannel evaporator for an automotive air conditioner, which can improve the working efficiency of both the automotive evaporator and the radiator simultaneously.

[0004] The technical solution of the utility model is: a combined microchannel evaporator for an automotive air conditioner, comprising a manifold and a plurality of combined heat exchange tubes;

[0005] The combined heat exchange tube comprises an inner tube and an outer tube. The inner tube is a straight tube, and the outer tube is a microchannel heat exchange plate wound into a cylindrical shape. The inner wall of the outer tube abuts against the outer wall of the inner tube. A convex ring is respectively provided at both ends of the outer tube. A manifold cavity is respectively provided in the two convex rings. Both ends of each microchannel in the outer tube are respectively connected to the two manifold cavities. A joint for communicating with the inside of the manifold cavity is further provided on the convex ring. Both ends of the inner tube respectively extend out of the two convex rings to form insertion ends;

[0006] The manifold comprises a pair of first manifolds and a pair of second manifolds. Both ends of each inner tube are respectively connected to the two first manifolds. The two manifold cavities of each outer tube are respectively connected to the two second manifolds through connecting tubes. The two first manifolds are respectively connected to the radiator of the automobile, and the two second manifolds are respectively connected to the air conditioning system of the automobile.

[0007] Further, the convex ring and the microchannel heat exchange plate are of an integrally formed structure, and the convex ring is formed by winding a hollow boss.

[0008] Specifically, the joint is welded on the convex ring.

[0009] Further, a gasket ring is respectively provided at the outer ends of the convex rings.

[0010] Further, heat exchange fins are provided on the outer periphery of the outer tube.

[0011] Further, a plurality of convex strips are respectively provided at the top and bottom of each microchannel in the outer tube.

[0012] Specifically, the cross-section of the convex strip is a triangle with rounded end corners.

[0013] Furthermore, it further includes a frame, and the two first manifold tubes and the two second manifold tubes are respectively fixed on the frame.

[0014] The beneficial effects of the present utility model are as follows: When the present utility model works, the liquid medium circulates between the outer tubes and evaporates into a gaseous medium. Since the inner tube is connected to the radiator of the vehicle, the medium with a higher temperature in the inner tube exchanges heat with the outer tubes, causing the medium in the outer tubes to rapidly heat up, while the medium in the inner tube is rapidly cooled. This can simultaneously improve the working efficiency of the vehicle evaporator and radiator, and the combined microchannel evaporator with the above structure also has the advantage of a compact structure. Description of the Drawings

[0015] Figure 1 is a schematic structural view of the combined heat exchange tube in the present utility model;

[0016] Figure 2 is a cross-sectional view of the combined heat exchange tube in the present utility model;

[0017] Figure 3 is Figure 2 an enlarged view of part A in

[0018] In the figure: inner tube 1, outer tube 2, microchannel 3, convex ring 4, joint 5, insertion end 6, gasket ring 7, heat exchange fin 8, convex strip 9. Detailed Embodiment

[0019] The technical solution of the present utility model will be further specifically described below through embodiments in combination with the drawings.

[0020] Combined with Figure 1 and Figure 2 as shown, the combined microchannel evaporator for vehicle air conditioners includes manifold tubes and multiple combined heat exchange tubes;

[0021] The combined heat exchange tube includes an inner tube 1 and an outer tube 2. The inner tube 1 is a straight tube, and the outer tube 2 is a microchannel heat exchange plate wound into a cylindrical shape. The inner wall of the outer tube 2 abuts against the outer wall of the inner tube 1. A convex ring 4 is respectively provided at both ends of the outer tube 2. A manifold cavity is respectively provided in the two convex rings 4. Both ends of each microchannel 3 in the outer tube 2 are respectively connected to the two manifold cavities. A joint 5 communicating with the inside of the manifold cavity is further provided on the convex ring 4. Both ends of the inner tube 1 respectively extend out of the two convex rings 4 to form an insertion end 6;

[0022] The manifold tubes include a pair of first manifold tubes and a pair of second manifold tubes. Both ends of each inner tube 1 are respectively connected to the two first manifold tubes. The two manifold cavities of each outer tube 2 are respectively connected to the two second manifold tubes through connecting tubes. The two first manifold tubes are respectively connected to the radiator of the vehicle, and the two second manifold tubes are respectively connected to the air conditioning system of the vehicle.

[0023] When the combined microchannel evaporator with the above structure works, the liquid medium circulates between the outer tubes 2 and evaporates into a gaseous medium. Since the inner tube 1 is connected to the radiator of the vehicle, the medium with a higher temperature in the inner tube 1 exchanges heat with the outer tube 2, causing the medium in the outer tube 2 to rapidly heat up, while the medium in the inner tube 1 is also rapidly cooled. This can improve the working efficiency of both the vehicle evaporator and the radiator at the same time, and the combined microchannel 3 evaporator with the above structure also has the advantage of being structurally compact.

[0024] In another embodiment, the convex ring 4 and the microchannel heat exchange plate are of an integrally formed structure, and the convex ring 4 is formed by winding a hollow boss.

[0025] Specifically, the joint 5 is welded to the convex ring 4.

[0026] In another embodiment, as Figure 1 shown, a gasket ring 7 is respectively provided at the outer end of each convex ring 4 to prevent the convex ring 4 from directly contacting the first manifold.

[0027] In another embodiment, as Figure 1 shown, heat exchange fins 8 are also provided on the outer periphery of the outer tube 2.

[0028] In another embodiment, as Figure 3 shown, a plurality of convex strips 9 are respectively provided at the top and bottom of each microchannel 3 in the outer tube 2 to increase the inner surface area of the microchannel 3.

[0029] In another embodiment, as Figure 3 shown, the cross-section of the convex strip 9 is a triangle with rounded end corners.

[0030] In another embodiment, a frame is further included, and the two first manifolds and the two second manifolds are respectively fixed on the frame.

Claims

1. The combined microchannel evaporator for automotive air conditioners is characterized in that, It includes a manifold and multiple combined heat exchange tubes; The combined heat exchange tube includes an inner tube (1) and an outer tube (2). The inner tube (1) is a straight tube, and the outer tube (2) is a microchannel heat exchange plate wound into a cylindrical shape. The inner wall of the outer tube (2) abuts against the outer wall of the inner tube (1). At both ends of the outer tube (2), there is respectively provided a convex ring (4). Each of the two convex rings (4) is provided with a manifold cavity inside. Both ends of each microchannel (3) in the outer tube (2) are respectively connected to the two manifold cavities. The convex ring (4) is also provided with a joint (5) communicating with the inside of the manifold cavity. Both ends of the inner tube (1) respectively extend out of the two convex rings (4) to form insertion ends (6); The manifold includes a pair of first manifolds and a pair of second manifolds. Both ends of each inner tube (1) are respectively connected to the two first manifolds. The two manifold cavities of each outer tube (2) are respectively connected to the two second manifolds through connecting tubes. The two first manifolds are respectively connected to the radiator of the vehicle, and the two second manifolds are respectively connected to the air conditioning system of the vehicle.

2. The combined microchannel evaporator for automotive air conditioners according to claim 1, characterized in that, The convex ring (4) and the microchannel heat exchange plate are of an integrally formed structure. The convex ring (4) is formed by winding a hollow boss.

3. The combined microchannel evaporator for automotive air conditioners according to claim 2, characterized in that, The joint (5) is welded on the convex ring (4).

4. The combined microchannel evaporator for automotive air conditioners according to claim 3, characterized in that, At the outer ends of each of the convex rings (4), there is respectively provided a gasket ring (7).

5. The combined microchannel evaporator for automotive air conditioners according to claim 4, characterized in that, The outer periphery of the outer tube (2) is also provided with heat exchange fins (8).

6. The combined microchannel evaporator for automotive air conditioners according to claim 5, characterized in that, At the top and bottom of each microchannel (3) in the outer tube (2), there are respectively provided multiple convex strips (9).

7. The combined microchannel evaporator for automotive air conditioners according to claim 6, characterized in that, The cross-section of the convex strip (9) is a triangle with rounded end corners.

8. The combined microchannel evaporator for automotive air conditioners according to claim 7, characterized in that, It also includes a frame, and the two first manifolds and the two second manifolds are respectively fixed on the frame.

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