CN110500899A - A water-cooled parallel flow heat exchanger with flat tubes connected - Google Patents

Abstract

The invention discloses a water-cooled parallel flow heat exchanger with flat tubes in rows, relates to the field of heat exchange, and mainly aims to solve the problem of low heat exchange efficiency of existing parallel flow heat exchangers; the water-cooled parallel flow heat exchanger with flat tubes in rows The parallel flow heat exchanger includes a first heat exchanger, and the first heat exchanger includes a first header and a second header; one end of the first header is provided with an air inlet, and the first header The tube is provided with a second air hole communicating with the flat pipe, the second collecting pipe is provided with a fourth air hole communicating with the flat pipe, and the first collecting pipe is also provided with a first partition; the second collecting pipe A first air outlet is provided at the end away from the air inlet, a cooling pipe and a spoiler assembly are provided on the flat tube, a second heat exchanger and a third heat exchanger are provided below the first heat exchanger, and the first heat exchanger The spacer and the second heat exchanger, and the second heat exchanger and the third heat exchanger are fixed by backing plates and assemblies, which improves the heat exchange efficiency.

Description

A water-cooled parallel flow heat exchanger with flat tubes connected

technical field

The invention relates to the field of heat exchange, in particular to a water-cooled parallel-flow heat exchanger connected with flat tubes.

Background technique

Parallel flow heat exchanger is an all-aluminum heat exchanger with compact structure, high heat exchange efficiency, and cost advantage compared with ordinary copper tube heat exchanger, and has been paid more and more attention by various air-conditioning manufacturers. Ideally, the refrigerant should be evenly distributed into each flat tube of the parallel flow heat exchanger to ensure the best heat transfer efficiency of the parallel flow heat exchanger.

The existing parallel flow heat exchanger header includes a header body, and a plurality of through holes arranged at intervals along the length direction of the header body are formed on the header body; One end in the length direction of the pipe body; at least one partition, the partition is arranged in the header body, and the partition divides the inside of the header body into at least two chambers, and the orientation of each chamber is One side of the input pipe is open, and the areas of the sides facing the input pipe of at least two chambers are equal, and the number of through holes in at least two chambers is the same. This kind of heat exchanger is only Heat transfer through flat tubes results in very low heat exchange efficiency.

Contents of the invention

The object of the present invention is to provide a water-cooled parallel flow heat exchanger with flat tubes connected in rows, which solves the problem of low heat exchange efficiency of the existing parallel flow heat exchangers.

To achieve the above object, the present invention provides the following technical solutions:

A water-cooled parallel flow heat exchanger connected with flat tubes, including a first heat exchanger, the first heat exchanger includes a first header and a second header, the first header and the second An installation pipe is fixed on the collecting pipe, and the installation pipe is detachably connected with the flat pipe; one end of the first collecting pipe is provided with an air inlet, and the first collecting pipe is provided with a second air hole communicating with the flat pipe, and the second The collecting pipe is provided with a fourth air hole communicating with the flat pipe, and the first collecting pipe is also provided with a first partition; the end of the second collecting pipe away from the air inlet is provided with a first air outlet, and the flat pipe is provided with a first air outlet. There are cooling pipes and spoiler components, the cooling pipes are arranged in a U shape between the flat pipes, and the cooling pipes also include cooling water inlets, cooling water outlets and spoiler pipes; there is a second heat exchanger below the first heat exchanger The heat exchanger and the third heat exchanger, between the first heat exchanger and the second heat exchanger, and between the second heat exchanger and the third heat exchanger are fixed by backing plates and assemblies.

On the basis of the above technical solutions, the present invention also provides the following optional technical solutions:

In an optional solution: the number of the second air hole and the fourth air hole are both two, and both are arranged up and down.

In an optional solution: heat dissipation fins are fixed on the flat tubes, the shape of the heat dissipation fins is triangular, and the heat dissipation fins on both sides of the flat tubes are staggered.

In an optional solution: a baffle is also provided in the second collecting pipe, a threaded rod is rotatably connected between the baffles, one end of the threaded rod is fixedly connected to the rocker, and a second clapboard.

In an optional solution: the spoiler assembly includes lap tubes arranged on the flat tubes, the lap tubes are connected to the flat tubes at both ends respectively, a rotating shaft is arranged in the lap tubes, and a fixed shaft is located in the lap tubes. The sleeve, the stirring rod is arranged on the fixed sleeve, and one end of the lap pipe is fixed with the output shaft of the motor.

In an optional solution: the first assembly and the third assembly are respectively fixed on the first heat exchanger and the third heat exchanger, the second assembly is fixed on the second heat exchanger, and the second assembly is fixed on the second heat exchanger. The two ends of the assembly are provided with projections, and the projections are inserted into the grooves on the first assembly and the third assembly.

In an optional solution: the first heat exchanger, the second heat exchanger and the third heat exchanger are integrally provided with an upper cover plate, a front cover plate, a lower cover plate and a back plate.

In an optional solution: a first air hole is provided in the first collecting pipe, the first air hole communicates with the air duct through the first air outlet, and the second collecting pipe communicates with the first air outlet through the third air hole. The air outlet is connected, and a second air outlet is also arranged on the lower cover plate.

In an optional solution: an air channel and a limiting plate are further provided in the first collecting pipe, the first air hole is arranged in the limiting plate, and the limiting plate is fixed in the first collecting pipe.

Compared with the prior art, the beneficial effects of the present invention are as follows:

1. The installation tube and the flat tube are detachably connected to facilitate the installation and disassembly of the flat tube. The flat tube is used for the circulation of air. When the air circulates in the flat tube, heat exchange is performed; the number of the flat tubes is multiple, and the Setting multiple flat tubes can increase the residence time of hot air in the flat tubes, thereby obtaining a better exchange effect;

2. When the rotating shaft rotates, it can drive the fixed sleeve to rotate, and then drive the stirring rod to rotate to cool the cooling water in the lap pipe, which is very simple. At the same time, one end of the lap pipe is fixed with the output shaft of the motor, and then passed The motor drives the rotating shaft to rotate, and the internal cooling water can be stirred through the stirring rod, thereby improving the heat exchange efficiency;

3. The first air hole communicates with the air duct through the first air outlet, and then part of the hot air enters the air duct between the flat tubes, absorbs heat through the heat dissipation fins, and the second collector pipe communicates with the first outlet through the third air hole. The air outlets are connected so that the air in the air duct enters into the second header, and the heat exchange efficiency is improved by increasing the moving path of the hot air.

Description of drawings

Fig. 1 is a schematic structural view of a water-cooled parallel flow heat exchanger connected with flat tubes.

Fig. 2 is a schematic structural view of the first header in a water-cooled parallel flow heat exchanger with flat tubes in rows.

Fig. 3 is a schematic diagram of the structure of the second header in the water-cooled parallel flow heat exchanger connected with flat tubes.

Fig. 4 is a schematic structural diagram of Embodiment 2 of a water-cooled parallel flow heat exchanger connected with flat tubes.

Fig. 5 is a structural schematic diagram of a spoiler assembly in a water-cooled parallel flow heat exchanger with flat tubes connected in parallel.

Fig. 6 is a schematic structural view of Embodiment 3 of a water-cooled parallel flow heat exchanger connected with flat tubes.

Fig. 7 is a schematic diagram of the structure of the assembly in the water-cooled parallel flow heat exchanger with flat tubes in rows.

Fig. 8 is a perspective view of a water-cooled parallel flow heat exchanger connected with flat tubes.

Notes on reference numerals: 100-first heat exchanger, 200-second heat exchanger, 300-third heat exchanger, 01-first header, 02-second header, 03-flat tube, 04-radiating fins, 05-cooling pipe, 06-spoiler assembly, 07-backing plate, 08-assembly, 11-air inlet, 12-first partition, 13-first air outlet, 14-installation pipe , 15-air duct, 16-distribution plate, 17-limiting plate, 18-first air hole, 19-second air hole, 21-first air outlet, 22-baffle plate, 23-second partition, 24-rocker, 25-thread rod, 26-third air hole, 27-fourth air hole, 51-cooling water inlet, 52-cooling water outlet, 53-spoiler tube, 61-motor, 62-lap joint Tube, 63-fixed sleeve, 64-stirring rod, 65-rotating shaft, 81-first assembly, 82-second assembly, 83-third assembly, 84-bump, 85-groove, 91- Upper cover plate, 92-front cover plate, 93-lower cover plate, 94-back plate, 95-second air outlet.

Detailed ways

The following embodiments will describe the present invention in detail with reference to the drawings. In the drawings or descriptions, similar or identical parts use the same symbols, and in practical applications, the shape, thickness or height of each component can be enlarged or reduced. The various embodiments listed in the present invention are only used to illustrate the present invention, and are not intended to limit the scope of the present invention. Any obvious modifications or changes made to the present invention do not depart from the spirit and scope of the present invention.

Example 1

Please refer to Figures 1 to 3, in an embodiment of the present invention, a water-cooled parallel flow heat exchanger with flat tubes in a row includes a first heat exchanger 100, and the first heat exchanger 100 is used to exchange heat for air; The first heat exchanger 100 includes a first header 01 and a second header 02, through which the first header 01 and the second header 02 facilitate the circulation of air, and the heat is transferred during the circulation of the air. exchange.

The installation pipe 14 is fixed on the first header 01 and the second header 02, and the installation pipe 14 is detachably connected with the flat pipe 03, which facilitates the installation and disassembly of the flat pipe 03, and the flat pipe 03 is used for air circulation , when the hot air circulates in the flat tubes 03, heat exchange is carried out; the number of the flat tubes 03 is multiple, and the residence time of the hot air in the flat tubes 03 can be improved by arranging a plurality of flat tubes 03, thereby obtaining Better exchange effect; through the detachable connection, it is convenient to install and replace the flat tube 03. When the flat tube 03 is damaged, it will also facilitate the installation of the flat tube 03.

Further, one end of the first header 01 is provided with an air inlet 11, hot air enters the first header 01 through the air inlet 11, and then enters the second header 02 through the flat tube 03, the first collector The flow pipe 01 is provided with a second air hole 19 communicating with the flat pipe 03, hot air enters the flat pipe 03 through the second air hole 19, and at the same time, the second collecting pipe 02 is provided with a first air hole communicating with the flat pipe 03. Four air holes 27, the hot air in the flat tube 03 will enter the second header 02 through the fourth air hole 27, the number of the second air hole 19 and the fourth air hole 27 are two, and both Arranged up and down; the first header 01 is also provided with a first baffle 12, through which the movement of hot air can be restricted and moved according to a specific path, thereby improving the heat exchange efficiency.

Further, the flat tube 03 is fixed with cooling fins 04, through which the heat on the flat tube 03 can be absorbed, thereby facilitating heat exchange, the shape of the cooling fins 04 is triangular, and the two flat tubes 03 The heat dissipation fins 04 on the side are designed in a staggered manner, so that the heat dissipation fins 04 between adjacent flat tubes 03 will not interfere with each other, which is very simple.

Further, the end of the second header 02 away from the air inlet 11 is provided with a first air outlet 21, the first air outlet 21 is used to discharge air, and a baffle 22 is also provided inside the second header 02, the baffle 22 is rotatably connected with a threaded rod 25, one end of the threaded rod 25 is fixedly connected with the rocker 24, and then the second partition 23 is driven to rotate by rotating the rocker 24, and the second partition 23 is threadedly connected with the second partition 23 , by adjusting the position of the second partition 23, the flow direction of the hot air can be controlled. In actual use, the position of the second partition 23 is set in advance according to the needs. When the threaded rod 25 rotates, the second partition can be driven 23 to move, and then adjust the position of the second partition 23, which is very practical.

Further, the flat tubes 03 are provided with cooling tubes 05, through which cooling water can pass through conveniently, and the cooling tubes 05 are arranged in a U shape between the flat tubes 03, that is, each flat tube 03 has a The cooling tube 05, and the adjacent flat tubes 03 will also be connected through the cooling tube 05, and the cooling water can move between the flat tubes 03 in a U shape, which increases the contact area between the cooling water and heat, and improves heat transfer Efficiency; the cooling pipe 05 also includes a cooling water inlet 51 and a cooling water outlet 52, the cooling water enters through the cooling water inlet 51, flows out through the cooling water outlet 52, and absorbs heat in the flat pipe 03 when moving in the cooling pipe 05; The cooling pipe 05 is provided with a spoiler tube 53, through which the residence time of the cooling water is increased, thereby improving the heat exchange efficiency.

Example 2

Please refer to Figures 4-5, the difference between the embodiment of the present invention and embodiment 1 is that the flat tube 03 is also provided with a spoiler assembly 06, and the heat exchange efficiency is improved through the spoiler assembly 06; the spoiler assembly 06 includes a lap tube 62 arranged on the flat tube 03, and the lap tube 62 communicates with the flat tube 03 at both ends respectively, and a rotating shaft 65 is arranged inside the lap tube 62, that is, the rotating shaft 65 runs through all the lap tubes 62, and the rotating shaft 65 Be positioned at lap pipe 62 and be provided with fixed sleeve 63, be provided with stirring rod 64 on the fixed sleeve 63, when rotating shaft 65 rotates, can drive fixed sleeve 63 to rotate, and then drive stirring rod 64 to rotate, to overlap Cooling the cooling water in the tube 62 is very simple. At the same time, one end of the overlapping tube 62 is fixed to the output shaft of the motor 61, and then the motor 61 drives the rotating shaft 65 to rotate, and the internal cooling water can be stirred by the stirring rod 64. Thereby improving the heat exchange efficiency.

Example 3

Please refer to Figures 6-8, a second heat exchanger 200 and a third heat exchanger 300 are also provided below the first heat exchanger 100, the first heat exchanger 100, the second heat exchanger 200 and the third heat exchanger The heat exchangers 300 are identical, and the first heat exchanger 100 and the second heat exchanger 200, and between the second heat exchanger 200 and the third heat exchanger 300 are fixed by the backing plate 07 to improve the stability of the three At the same time, the first assembly 81 and the third assembly 83 are respectively fixed on the first heat exchanger 100 and the third heat exchanger 300, the second assembly 82 is fixed on the second heat exchanger 200, the second The two ends of the assembly 82 are provided with protrusions 84, and the protrusions 84 are inserted into the grooves 85 on the first assembly 81 and the third assembly 83, and the first heat exchanger 100 and the second heat exchanger 100 are connected by setting the assembly 08. The heat exchanger 200 and the third heat exchanger 300 are assembled to have a better heat dissipation effect.

Further, the whole composed of the first heat exchanger 100, the second heat exchanger 200 and the third heat exchanger 300 is provided with an upper cover plate 91, a front cover plate 92, a lower cover plate 93 and a back plate 94, Then the whole is sealed.

Further, the first collecting pipe 01 is provided with a first air hole 18, and the first air hole 18 communicates with the air duct 15 through the first air outlet 13, and then a part of hot air enters the air duct between the flat tubes 03 15. Heat is absorbed by the cooling fins 04, and the second header 02 communicates with the first air outlet 13 through the third air hole 26, so that the air in the air duct 15 enters the second header 02, and the hot air The moving path improves the heat exchange efficiency, because the whole of the first heat exchanger 100, the second heat exchanger 200 and the third heat exchanger 300 is closed, so it is more efficient, and the lower cover plate 93 is also equipped with a second The second air outlet 95 discharges the hot air in the air duct 15 through the second air outlet 95, which is very practical.

Further, the first header 01 is also provided with an air duct 16 through which the hot air is distributed so that it can evenly enter the flat tube 03, and the first air hole 18 is set at a limit Inside the plate 17 , the limiting plate 17 is fixed in the first header 01 .

The working principle of the present invention is: hot air enters the first header 01 through the air inlet 11, enters the flat tube 03 through the second air hole 19, and exchanges heat with the cooling water in the flat tube 03. The heat will also be transferred to the cooling fins 04, the hot air in the flat tube 03 enters the second header 02 through the fourth air hole 27, under the action of the first partition 12 and the second partition 23, Move in the first header 01, the second header 02 and the flat tube 03 according to a specific path, and finally discharge from the first air outlet 21; in the flat tube 03, the heat exchange efficiency is improved through the spoiler assembly 06; At the same time, a part of the hot air on the first header 01 and the second header 02 enters the air duct 15 through the first air outlet 13 , absorbs heat through the cooling fins 04 , and is finally discharged from the second air outlet 95 .

The above is only a specific implementation of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope of the present disclosure. should fall within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be determined by the protection scope of the claims.

Claims (9)

1. A water-cooled parallel flow heat exchanger connected with flat tubes, comprising a first heat exchanger (100), characterized in that the first heat exchanger (100) comprises a first header (01) and the second header (02), the first header (01) and the second header (02) are fixed with the installation pipe (14), and the installation pipe (14) is detachably connected with the flat pipe (03) ; One end of the first collecting pipe (01) is provided with an air inlet (11), and the first collecting pipe (01) is provided with a second air hole (19) communicating with the flat pipe (03). The flow pipe (02) is provided with a fourth air hole (27) communicating with the flat pipe (03), and the first collecting pipe (01) is also provided with a first partition (12); the second collecting pipe (02) The end away from the air inlet (11) is provided with a first air outlet (21), the flat pipe (03) is provided with a cooling pipe (05) and a spoiler assembly (06), and the cooling pipes (05) are U-shaped Distributed between the flat tubes (03), the cooling tube (05) also includes a cooling water inlet (51), a cooling water outlet (52) and a spoiler tube (53); under the first heat exchanger (100) there is also There is a second heat exchanger (200) and a third heat exchanger (300), between the first heat exchanger (100) and the second heat exchanger (200), between the second heat exchanger (200) and the The three heat exchangers (300) are fixed by a backing plate (07) and an assembly (08). 2. The water-cooled parallel flow heat exchanger with flat tubes in a row according to claim 1, characterized in that the number of the second air hole (19) and the fourth air hole (27) are both two, And are arranged up and down. 3. The water-cooled parallel flow heat exchanger with flat tubes in rows according to claim 1, characterized in that, the flat tubes (03) are fixed with cooling fins (04), and the cooling fins (04) The shape is triangular, and the cooling fins (04) on both sides of the flat tube (03) are staggered. 4. The water-cooled parallel flow heat exchanger with flat tubes in a row according to claim 1, characterized in that, a baffle (22) is also provided in the second header (02), and the baffle (22 ) is rotationally connected with a threaded rod (25), one end of the threaded rod (25) is fixedly connected with the rocking bar (24), and the second partition (23) is threaded with a second partition (23). 5. The water-cooled parallel flow heat exchanger with flat tubes connected in a row according to claim 1, characterized in that, the turbulence component (06) includes a lap tube (62) arranged on the flat tube (03) , the lap pipe (62) communicates with the flat pipes (03) at both ends respectively, the lap pipe (62) is provided with a rotating shaft (65), and the rotating shaft (65) is located in the lap pipe (62) with a fixed sleeve ( 63), the fixed sleeve (63) is provided with a stirring rod (64), and one end of the lap pipe (62) is fixed with the output shaft of the motor (61). 6. The water-cooled parallel flow heat exchanger with flat tubes in a row according to claim 1, characterized in that, the first heat exchanger (100) and the third heat exchanger (300) are respectively fixed with a second An assembly (81) and a third assembly (83), the second assembly (82) is fixed on the second heat exchanger (200), and the two ends of the second assembly (82) are provided with bumps (84) , the protrusion (84) is inserted into the groove (85) on the first assembly (81) and the third assembly (83). 7. The water-cooled parallel flow heat exchanger with flat tubes connected in a row according to claim 6, characterized in that the first heat exchanger (100), the second heat exchanger (200) and the third heat exchanger The device (300) is composed of an upper cover (91), a front cover (92), a lower cover (93) and a back plate (94). 8. The water-cooled parallel flow heat exchanger with row flat tubes according to claim 1, characterized in that, the first header (01) is provided with a first air hole (18), the first air The hole (18) communicates with the air duct (15) through the first air outlet (13), the second collector (02) communicates with the first air outlet (13) through the third air outlet (26), and the lower cover ( 93) is also provided with a second air outlet (95). 9. The water-cooled parallel flow heat exchanger with row flat tubes according to claim 8, characterized in that an air duct (16) and a limiting plate ( 17), the first air hole (18) is set in the limiting plate (17), and the limiting plate (17) is fixed on the inner wall of the first collector (01).