Single flat tube type heat exchanger

Abstract

The utility model discloses a single flat tube type heat exchanger which comprises a flat tube, the flat tube is coiled in an S shape, heat exchange fins are arranged between two vertically adjacent transverse parts of the flat tube, one end of the flat tube is communicated with a first collecting pipe, and the other end of the flat tube is communicated with a second collecting pipe; the single flat pipe is communicated with the corresponding first collecting pipe and the second collecting pipe, so that the heat exchanger is convenient to assemble and process and high in efficiency.

Description

Technical Field:

[0001] The utility model relates to the technical field of heat exchanger processing equipment, and more specifically to a single flat tube heat exchanger. Background Art:

[0002] The existing flat tube heat exchanger generally consists of multiple flat tubes and two liquid collecting tubes. Multiple partitions are arranged in the liquid collecting tubes to divide the liquid collecting tubes into multiple flow chambers. One end of the corresponding flat tube communicates with the corresponding flow chamber, so that all flat tubes are communicated. The refrigerant can flow into the corresponding flow chamber of the liquid collecting tube connected to the leftmost or rightmost flat tube, gradually flow through the corresponding flow chambers of the remaining flat tubes and the two liquid collecting tubes, and then flow out from the flow chamber of the liquid collecting tube corresponding to the rightmost or leftmost flat tube.

[0003] Due to the connection of multiple flat tubes and the liquid collecting tubes, each flat tube is connected to the liquid collecting tube, resulting in troublesome assembly, troublesome manufacturing, high processing cost and low efficiency. Summary of the Utility Model:

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a single flat tube heat exchanger, which uses a single flat tube to communicate with the corresponding first liquid collecting tube and second liquid collecting tube, making its assembly convenient, processing convenient and efficient.

[0005] The solution of the utility model to solve the above technical problems is:

[0006] A single flat tube heat exchanger includes a flat tube. The flat tube is coiled in an S shape. Heat exchange fins are arranged between two adjacent upper and lower transverse parts of the flat tube. One end of the flat tube is connected to a first liquid collecting tube, and the other end of the flat tube is connected to a second liquid collecting tube.

[0007] At least two flattened solid bars are formed in the middle of the flat tube, and at least three flow channels are formed in the flat tube through the flattened solid bars.

[0008] Each flow channel is composed of multiple sub-flow through holes.

[0009] A plurality of connecting plates are fixed on the first liquid collecting tube, and at least two first liquid guiding chambers are separated by all the connecting plates; a plurality of connecting plates are fixed on the second liquid collecting tube, and at least two second liquid guiding chambers are separated by all the connecting plates.

[0010] The flat tube is formed by flattening a solid bar to form at least three flow channels. One end of the rightmost flow channel communicates with the first liquid guide cavity at the right end, and the other end of the rightmost flow channel communicates with the second liquid guide cavity at the right end. One end of the flow channel in the middle of the flat tube communicates with the second liquid guide cavity at the right end, and the other end communicates with the first liquid guide cavity on the left side. One end of the flow channel in the left part of the flat tube communicates with the first liquid guide cavity on the left side, and the other end of the flow channel in the left part of the flat tube communicates with the second liquid guide cavity on the left side.

[0011] A first connector is connected to the first liquid guide cavity at the right end of the first manifold pipe, and a second connector is connected to the second liquid guide cavity at the left end of the second manifold pipe.

[0012] A through hole is formed on the side wall of the first liquid guide cavity at the right end of the first manifold pipe, and a first connector is fixedly welded on the outer side wall of the corresponding first manifold pipe. The first connector communicates with the corresponding through hole.

[0013] A through hole is formed on the side wall of the second liquid guide cavity at the left end of the second manifold pipe, and a second connector is fixedly welded on the outer side wall of the corresponding second manifold pipe. The first connector communicates with the corresponding through hole.

[0014] The outstanding effect of the present utility model is:

[0015] Compared with the prior art, it uses a single flat tube to communicate with the corresponding first manifold pipe and second manifold pipe, making its assembly convenient, processing convenient, and having high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS:

[0016] Figure 1 is a schematic structural diagram of the present utility model (the heat dissipation fins are omitted);

[0017] Figure 2 is a side view of the present utility model;

[0018] Figure 3 is a partial cross-sectional view of the present utility model;

[0019] Figure 4 is a partial cross-sectional view of another part of the present utility model. DETAILED DESCRIPTION OF THE INVENTION:

[0020] Embodiment, as shown in Figures 1 to 4 A single flat tube type heat exchanger, including a flat tube 10, the flat tube 10 is wound in an S shape, heat dissipation fins 12 are provided between two adjacent upper and lower horizontal portions 111 of the flat tube 10, the heat dissipation fins 12 are fixedly welded on the opposite wall surfaces of two adjacent upper and lower horizontal portions 111, one end of the flat tube 10 communicates with and is fixedly welded to a first manifold pipe 13, and the other end of the flat tube 10 communicates with and is fixedly welded to a second manifold pipe 14;

[0021] At least two flattened solid bars 112 are formed in the middle of the flat tube 10, and the flat tube 10 forms at least three flow channels 113 through the flattened solid bars 112;

[0022] Each flow channel 113 is composed of a plurality of sub-flow through holes.

[0023] A plurality of connecting plates are fixed on the first manifold 13, and at least two first liquid guiding cavities 131 are separated by all the connecting plates; a plurality of connecting plates are fixed on the second manifold 14, and at least two second liquid guiding cavities 141 are separated by all the connecting plates;

[0024] The flat tube 10 forms at least three flow channels 113 through the flattened solid bars 112. One end of the rightmost flow channel 113 communicates with the rightmost first liquid guiding cavity 131, and the other end of the rightmost flow channel 113 communicates with the rightmost second liquid guiding cavity 141. One end of the flow channel 113 in the middle of the flat tube 10 communicates with the rightmost second liquid guiding cavity 141 and the other end communicates with the left first liquid guiding cavity 131. One end of the flow channel 113 in the left part of the flat tube 10 communicates with the left first liquid guiding cavity 131, and the other end of the flow channel 113 in the left part of the flat tube 10 communicates with the left second liquid guiding cavity 141.

[0025] In this embodiment, three connecting plates are fixed on the first manifold 13, and two first liquid guiding cavities 131 are separated by the three connecting plates. The length of the left first liquid guiding cavity 131 is basically twice or more than twice that of the right first liquid guiding cavity 131. Similarly, three connecting plates are also fixed on the second manifold 14, and two second liquid guiding cavities 141 are separated by all the connecting plates. The length of the right second liquid guiding cavity 141 is twice or more than twice that of the left second liquid guiding cavity 141.

[0026] In this embodiment, two flattened solid bars 112 are formed in the middle of the flat tube 10, and the flat tube 10 forms three flow channels 113 through the two flattened solid bars 112;

[0027] The inside of the flat tube 10 at the position of the flattened solid bar 112 is a solid body, while at the flow channel 113, a plurality of partition bars are formed to divide it into a plurality of sub-flow through holes with equal cross-sectional sizes. The number and cross-sectional size of the sub-flow through holes of each flow channel 113 are the same.

[0028] One end of the rightmost flow channel 113 extends into the rightmost first liquid guiding cavity 131 and is welded and fixed. One end of the rightmost flow channel 113 communicates with the rightmost first liquid guiding cavity 131. The other end of the rightmost flow channel 113 extends into the rightmost second liquid guiding cavity 141 and is welded and fixed and communicates with the rightmost second liquid guiding cavity 141;

[0029] One end of the flow passage 113 in the middle of the flat tube 10 extends into the second liquid guide cavity 141 at the right end, communicates with the second liquid guide cavity 141 at the right end and is fixed by welding. The other end extends into the first liquid guide cavity 131 on the left side, communicates with the first liquid guide cavity 131 on the left side and is fixed by welding. One end of the flow passage 113 in the left part of the flat tube 10 extends into the first liquid guide cavity 131 on the left side, communicates with the first liquid guide cavity 131 on the left side and is fixed by welding. The other end of the flow passage 113 in the left part of the flat tube 10 extends into the second liquid guide cavity 141 on the left side, communicates with it and is fixed by welding.

[0030] According to design requirements, four connecting plates can also be fixed on the first header pipe 13 to divide it into three first liquid guide cavities 131, and four connecting plates can be fixed on the second header pipe 14 to divide it into three second liquid guide cavities 141. Correspondingly, four flattened solid bars 112 need to be arranged on the flat tube 10 to form five flow passages 113, and all designs can be extended in this way successively.

[0031] Furthermore, a first connector 1 is connected to the first liquid guide cavity 131 at the right end of the first header pipe 13, and a second connector 2 is connected to the second liquid guide cavity 141 at the left end of the second header pipe 14.

[0032] A through hole is formed on the side wall of the first liquid guide cavity 131 at the right end of the first header pipe 13. A first connector 1 is fixedly welded on the outer side wall of the corresponding first header pipe 13, and the first connector 1 communicates with the corresponding through hole.

[0033] A through hole is formed on the side wall of the second liquid guide cavity 141 at the left end of the second header pipe 14. A second connector 2 is fixedly welded on the outer side wall of the corresponding second header pipe 14, and the first connector 1 communicates with the corresponding through hole.

[0034] When this embodiment is in use, the refrigerant (refrigerant medium) enters from the first connector 1 into the first liquid guide cavity 131 at the right end of the first header pipe 13, then passes through the flow passage 113 on the right side of the corresponding flat tube 10, then enters the second liquid guide cavity 141 at the right end of the second header pipe 14, then enters the flow passage 113 in the middle of the corresponding flat tube 10, then enters the first liquid guide cavity 131 at the left end of the first header pipe 13, then enters the flow passage 113 in the left part of the corresponding flat tube 10, then enters the second liquid guide cavity 141 at the left end of the second liquid guide cavity 141, and finally flows out from the second connector 2.

[0035] Only a single flat tube 10 needs to be connected and fixed to the first header pipe 13 and the second header pipe 14, which makes the assembly convenient, has a good effect, and greatly improves the processing and manufacturing efficiency.

[0036] Finally, the above embodiments are only used to illustrate the present invention, rather than to limit the present invention. Those of ordinary skill in the relevant technical field can also make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions also belong to the scope of the present invention, and the patent protection scope of the present invention shall be defined by the claims.

Claims

1. A single flat tube heat exchanger, comprising a flat tube (10), characterized in that: The flat tube (10) is coiled in an S shape. Heat exchange fins (12) are provided between two adjacent upper and lower transverse portions (111) of the flat tube (10). One end of the flat tube (10) is connected to a first header pipe (13), and the other end of the flat tube (10) is connected to a second header pipe (14). At least two flattened solid bars (112) are formed in the middle of the flat tube (10), and at least three flow channels (113) are formed in the flat tube (10) through the flattened solid bars (112). Each flow channel (113) is composed of a plurality of sub-flow through holes.

2. The single flat tube heat exchanger according to claim 1, characterized in that: A plurality of connecting plates are fixed on the first header pipe (13), and are separated by all the connecting plates into at least two first liquid guiding cavities (131); a plurality of connecting plates are fixed on the second header pipe (14), and are separated by all the connecting plates into at least two second liquid guiding cavities (141). At least three flow channels (113) are formed in the flat tube (10) through the flattened solid bars (112). One end of the rightmost flow channel (113) communicates with the rightmost first liquid guiding cavity (131), and the other end of the rightmost flow channel (113) communicates with the rightmost second liquid guiding cavity (141). One end of the flow channel (113) in the middle of the flat tube (10) is connected to the rightmost second liquid guiding cavity (141), and the other end is connected to the left first liquid guiding cavity (131). One end of the flow channel (113) in the left part of the flat tube (10) is connected to the left first liquid guiding cavity (131), and the other end of the flow channel (113) in the left part of the flat tube (10) is connected to the left second liquid guiding cavity (141).

3. The single flat tube heat exchanger according to claim 1, characterized in that: A first connector (1) is connected to the rightmost first liquid guiding cavity (131) of the first header pipe (13), and a second connector (2) is connected to the leftmost second liquid guiding cavity (141) of the second header pipe (14).

4. The single flat tube heat exchanger according to claim 3, characterized in that: A through hole is formed in the side wall of the rightmost first liquid guiding cavity (131) of the first header pipe (13), and a first connector (1) is welded and fixed on the outer side wall of the corresponding first header pipe (13), and the first connector (1) communicates with the corresponding through hole.

5. A single flat tube heat exchanger according to claim 1, characterized in that: A through hole is formed in the side wall of the leftmost second liquid guiding cavity (141) of the second header pipe (14), and a second connector (2) is welded and fixed on the outer side wall of the corresponding second header pipe (14), and the first connector (1) communicates with the corresponding through hole.

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