A new double-layer to four-pass indoor condenser structure

Abstract

The present invention discloses a novel double-layer to four-flow indoor condenser structure, comprising a first collecting pipe, a fourth collecting pipe, a second collecting pipe and a third collecting pipe, wherein the first collecting pipe and the second collecting pipe are fixed front and back, and the fourth collecting pipe and the third collecting pipe are fixed front and back, flat tubes are evenly welded between the first collecting pipe and the second collecting pipe, and flat tubes are also evenly welded between the fourth collecting pipe and the third collecting pipe, the upper end and the lower end between the second collecting pipe and the third collecting pipe are both provided with a connected partition for sealing them, and the upper end and the lower end between the first collecting pipe and the fourth collecting pipe are also provided with a connected partition for sealing them, under the premise that the core body size is the same, the flow resistance can be greatly reduced, and the heat exchange performance of the indoor condenser can be improved, and under the premise that the heat exchange performance requirements are the same, the material cost can be saved, the weight can be reduced, and the space occupied by the core body can be saved, and the use of circular flow holes can meet the high pressure resistance requirements of the condenser.

Description

Technical Field

[0001] The invention relates to the technical field of automobile heat pump air-conditioning systems, and in particular to a novel double-layer to four-flow indoor condenser structure. Background Art

[0002] Unlike fuel-powered vehicles, new energy vehicles lack the ability to utilize engine waste heat, leading to industry consensus on the use of heat pump systems for winter heating and defrosting. Without a complete redevelopment of the air conditioning unit housing, the internal condenser used for winter indoor heating would need to adapt to the space within the unit, placing structural constraints. Replacing the smaller heater core in traditional vehicles with an internal condenser, how to provide increased heat transfer in winter becomes a key design objective. Current research on indoor condensers for automotive heat pump systems primarily focuses on system performance, with limited research on improving individual unit performance. However, existing units are complex and prone to end baffles detaching. During operation, the indoor condenser inlets gaseous refrigerant, which decreases as the condensation process progresses, leaving liquid refrigerant at the outlet. Therefore, the number of flat tubes in each flow path of the double-layer, four-flow condenser should be gradually reduced along the refrigerant flow direction. However, the existing four-flow flat tubes are evenly distributed, resulting in poor heat transfer performance. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a new double-layer to four-flow indoor condenser structure. Under the premise of the same core size, the flow resistance can be greatly reduced and the heat exchange performance of the indoor condenser can be improved. Under the premise of the same heat exchange performance requirements, it can save material costs, reduce weight, and save the space occupied by the core. The use of circular flow holes can meet the high pressure resistance requirements of the condenser, which can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a novel double-layer to four-flow indoor condenser structure, comprising a first header, a fourth header, a second header and a third header, wherein the first header and the second header are fixed front and back, the fourth header and the third header are fixed front and back, flat tubes are uniformly welded between the first header and the second header, and flat tubes are also uniformly welded between the fourth header and the third header, the upper and lower ends between the second header and the third header are both provided with a conjoined partition for blocking them, and the upper and lower ends between the first header and the fourth header are also both provided with a conjoined partition for blocking them, A flow hole group 1 is provided between the lower ends of the first collecting pipe and the fourth collecting pipe, and a flow hole group 2 is provided between the lower ends of the second collecting pipe and the third collecting pipe, an indoor condenser inlet is provided at the upper end of the first collecting pipe, an indoor condenser outlet is provided at the upper end of the fourth collecting pipe, a partition 1 is provided at the lower end of the interior of the first collecting pipe, and the partition 1 is located at the upper end of the flow hole group 1, a partition 2 is provided at the upper end of the interior of the fourth collecting pipe, and the partition 2 is located at the lower end of the indoor condenser outlet, a partition 3 is provided inside the third collecting pipe, and the partition 3 is located at the upper end of the flow hole group 2, and the number of the first collecting pipe, the second collecting pipe, the third collecting pipe and the fourth collecting pipe decreases successively.

[0005] Furthermore, a guard plate is fixed between the upper ends of the first, fourth, second and third headers, and a guard plate is also fixed between the lower ends of the first, fourth, second and third headers.

[0006] Furthermore, the flow hole group 1 includes through holes provided on the first current collecting pipe and through holes provided on the fourth current collecting pipe, and the through holes on the first current collecting pipe and the through holes on the fourth current collecting pipe are connected in a one-to-one correspondence.

[0007] Furthermore, the second flow hole group includes through holes provided on the second header and through holes provided on the third header, and the through holes on the second header and the through holes on the third header are connected in a one-to-one correspondence.

[0008] Compared with the existing technology, the beneficial effects of the present invention are: this new double-layer to four-flow indoor condenser structure can significantly reduce the flow resistance and improve the heat exchange performance of the indoor condenser under the premise of the same core size. Under the premise of the same heat exchange performance requirements, it can save material costs, reduce weight, and save core space, and the use of circular flow holes can meet the high pressure resistance requirements of the condenser. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the structure of the present invention;

[0010] Figure 2 It is a schematic diagram of the flow structure of the present invention;

[0011] Figure 3 It is a schematic diagram of a partially enlarged structure of the present invention.

[0012] In the figure: 1 first header, 2 flow hole group 1, 3 partition 1, 4 fourth header, 5 partition 2, 6 indoor condenser outlet, 7 indoor condenser inlet, 8 connected partition, 9 guard plate, 10 second header, 11 third header, 12 flat tube, 13 partition 3, 14 flow hole group 2. DETAILED DESCRIPTION

[0013] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0014] See also Figure 1-3The present invention provides a technical solution: a novel double-layer to four-flow indoor condenser structure, comprising a first header 1, a fourth header 4, a second header 10 and a third header 11, wherein the first header 1 and the second header 10 are fixed front and back, the fourth header 4 and the third header 11 are fixed front and back, flat tubes 12 are uniformly welded between the first header 1 and the second header 10, and flat tubes 12 are also uniformly welded between the fourth header 4 and the third header 11, and the upper and lower ends between the second header 10 and the third header 11 are both provided with a conjoined partition 8 for blocking them, and the first header The upper and lower ends between the tube 1 and the fourth manifold 4 are also provided with a conjoined partition 8 for blocking them. A flow hole group 2 is provided between the lower ends of the first manifold 1 and the fourth manifold 4, and a flow hole group 2 14 is provided between the lower ends of the second manifold 10 and the third manifold 11. The upper end of the first manifold 1 is provided with an indoor condenser inlet 7, and the upper end of the fourth manifold 4 is provided with an indoor condenser outlet 6. The lower end of the interior of the first manifold 1 is provided with a partition 3, and the partition 3 is located at the upper end of the flow hole group 2. The upper end of the interior of the fourth manifold 4 is provided with a partition 2 5, and the partition 2 5 is located at the lower end of the indoor condenser outlet 6. , a partition plate 3 13 is provided inside the third manifold 11, and the partition plate 3 13 is located at the upper end of the flow hole group 2 14. A guard plate 9 is fixed between the upper ends of the first manifold 1, the fourth manifold 4, the second manifold 10 and the third manifold 11. The number of the first manifold 1, the second manifold 10, the third manifold 11 and the fourth manifold 4 decreases in sequence, and a guard plate 9 is also fixed between the lower ends of the first manifold 1, the fourth manifold 4, the second manifold 10 and the third manifold 11. The flow hole group 1 2 includes a through hole provided on the first manifold 1 and a through hole provided on the fourth manifold 4. The through hole on the first manifold 1 The through holes and the through holes on the fourth collecting pipe 4 are connected one-to-one, and the through holes group 2 14 includes the through holes arranged on the second collecting pipe 10 and the through holes on the third collecting pipe 11, and the through holes on the second collecting pipe 10 and the through holes on the third collecting pipe 11 are connected one-to-one. This new double-layer to four-flow indoor condenser structure can significantly reduce the flow resistance and improve the heat exchange performance of the indoor condenser under the premise of the same core size. Under the premise of the same heat exchange performance requirements, it can save material costs, reduce weight, and save core space. The use of circular through holes can meet the high pressure resistance requirements of the condenser.

[0015] During use: first, the gaseous refrigerant enters the upper end of the first collecting pipe 1 from the indoor condenser inlet 7, and then enters the second collecting pipe 10 through the flat tube 12 of the first flow, and a part of the refrigerant entering the second collecting pipe 10 enters the lower end of the third collecting pipe 11 through the flow hole group 2 14, and the refrigerant at the lower end of the third collecting pipe 11 enters the lower end of the fourth collecting pipe 4 through the flat tube 12 of the second flow, and another part of the refrigerant in the second collecting pipe 10 first enters the lower end of the first collecting pipe 1 through the flat tube 12 of the second flow and then enters the lower end of the fourth collecting pipe 4 through the flow hole group 1 2, and the refrigerant entering the lower end of the fourth collecting pipe 4 together enters the upper end of the third collecting pipe 11 through the flat tube 12 of the third flow, and the refrigerant at the upper end of the third collecting pipe 11 enters the upper end of the fourth collecting pipe 4 through the flat tube 12 of the fourth flow, and finally the refrigerant is discharged through the indoor condenser outlet 6, thereby improving the refrigeration efficiency of the device.

[0016] While the embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that various changes, modifications, substitutions, and alterations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A novel double-layer to four-flow indoor condenser structure, comprising a first header (1), a fourth header (4), a second header (10) and a third header (11), characterized in that: The first collecting pipe (1) and the second collecting pipe (10) are fixed front to back, the fourth collecting pipe (4) and the third collecting pipe (11) are fixed front to back, flat tubes (12) are uniformly welded between the first collecting pipe (1) and the second collecting pipe (10), and flat tubes (12) are also uniformly welded between the fourth collecting pipe (4) and the third collecting pipe (11), and the upper and lower ends between the second collecting pipe (10) and the third collecting pipe (11) are both provided with a conjoined partition (8) for blocking them, and the first collecting pipe (1) is The upper and lower ends of the flow tube (1) and the fourth collecting tube (4) are also provided with a connected partition (8) for blocking them. A flow hole group 1 (2) is provided between the lower ends of the first collecting tube (1) and the fourth collecting tube (4), and a flow hole group 2 (14) is provided between the lower ends of the second collecting tube (10) and the third collecting tube (11). The upper end of the first collecting tube (1) is provided with an indoor condenser inlet (7), the upper end of the fourth collecting tube (4) is provided with an indoor condenser outlet (6), and the The first collecting pipe (1) is provided with a partition plate (3) at the lower end thereof, and the partition plate (3) is located at the upper end of the flow hole group (2). The fourth collecting pipe (4) is provided with a partition plate (5) at the upper end thereof, and the partition plate (5) is located at the lower end of the indoor condenser outlet (6). The third collecting pipe (11) is provided with a partition plate (13) at the inner end thereof, and the partition plate (13) is located at the upper end of the flow hole group (14). The first collecting pipe 1, the second collecting pipe (10), the third collecting pipe (11) and the fourth collecting pipe (4) decreases in number; a guard plate (9) is fixed between the upper ends of the first collecting pipe (1), the fourth collecting pipe (4), the second collecting pipe (10) and the third collecting pipe (11), and a guard plate (9) is also fixed between the lower ends of the first collecting pipe (1), the fourth collecting pipe (4), the second collecting pipe (10) and the third collecting pipe (11); the flow hole group 1 (2) includes a through hole provided on the first collecting pipe (1) and a through hole provided on the fourth collecting pipe (4), the first collecting pipe The through holes on the second collecting pipe (1) and the through holes on the fourth collecting pipe (4) are connected in a one-to-one correspondence; the second flow hole group (14) includes the through holes provided on the second collecting pipe (10) and the through holes provided on the third collecting pipe (11), and the second collecting pipe The through holes on the flow tube (10) and the through holes on the third collecting pipe (11) are connected in a one-to-one correspondence; When in use: first, the gaseous refrigerant enters the upper end of the first manifold (1) from the indoor condenser inlet (7), and then enters the second manifold (10) through the flat tube (12) of the first flow path. A portion of the refrigerant entering the second manifold (10) enters the lower end of the third manifold (11) through the second flow hole group (14). The refrigerant at the lower end of the third manifold (11) enters the lower end of the fourth manifold (4) through the flat tube (12) of the second flow path. The other portion of the refrigerant in the second manifold (10) first passes through the flat tube (12) of the second flow path. After passing through the flat tube (12) of the second flow path and entering the lower end of the first collecting tube (1), the refrigerant enters the lower end of the fourth collecting tube (4) through the flow hole group (2). The refrigerant entering the lower end of the fourth collecting tube (4) passes through the flat tube (12) of the third flow path and enters the upper end of the third collecting tube (11). The refrigerant at the upper end of the third collecting tube (11) passes through the flat tube (12) of the fourth flow path and enters the upper end of the fourth collecting tube (4). Finally, the refrigerant is discharged through the indoor condenser outlet (6), thereby improving the refrigeration efficiency of the device.

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