Integrated air-liquid dual-purpose heat exchanger

Abstract

The application discloses an integrated air-liquid dual-purpose heat exchanger, which is characterized by comprising a transversely arranged air-cooled heat exchanger and a vertically arranged liquid-cooled heat exchanger close to a hot working medium outlet end of the air-cooled heat exchanger; a hot working medium inlet is arranged at one end of the air-cooled heat exchanger far from the hot working medium outlet; and a hot working medium channel for sequentially flowing through the air-cooled heat exchanger and the liquid-cooled heat exchanger is communicated between the hot working medium inlet and the hot working medium outlet. The application combines the commonly used air-cooled heat exchange mode and the liquid-cooled heat dissipation mode, so that the heat exchanger can cope with more working conditions, and can be switched under different environmental temperatures, thereby guaranteeing the best heat dissipation effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat exchangers, in particular to an integrated air-liquid dual-purpose heat exchanger. BACKGROUND

[0002] Air cooling and liquid cooling are two commonly used motor heat dissipation systems. In extreme high temperature environments (such as fire scenes), the temperature control requirements for equipment are extremely strict, at which time air cooling heat dissipation is difficult to meet the heat dissipation requirements, and a more efficient liquid cooling heat dissipation method needs to be sought. In ordinary environments, air cooling can meet the requirements, and the use of liquid cooling in this scenario increases energy consumption, so there is an urgent need for a heat exchanger that can meet various heat dissipation scenarios. SUMMARY

[0003] In view of the above technical deficiencies, the purpose of the present application is to provide an integrated air-liquid dual-purpose heat exchanger.

[0004] To solve the above technical problems, the present application adopts the following technical scheme:

[0005] The present application provides an integrated air-liquid dual-purpose heat exchanger, which comprises a transversely arranged air-cooled heat exchanger and a vertically arranged liquid-cooled heat exchanger close to the hot working medium outlet end of the air-cooled heat exchanger. The end of the air-cooled heat exchanger away from the hot working medium outlet is provided with a hot working medium inlet. The hot working medium inlet and the hot working medium outlet are communicated with a hot working medium channel that sequentially flows through the air-cooled heat exchanger and the liquid-cooled heat exchanger. A plurality of air-cooled layer plates are arranged in the air-cooled heat exchanger. A plurality of rows of grooves one are arranged on the air-cooled layer plates in the direction of hot working medium flow. Hot working medium channel rib plates connecting adjacent two air-cooled layer plates are arranged on both sides of the grooves one. The hot working medium channel rib plates and the air-cooled layer plates form the hot working medium channel of the air-cooled heat exchanger. The other side of the air-cooled layer plate corresponding to the hot working medium channel rib plate forms a plurality of air channel rib plates arranged perpendicularly to the hot working medium channel rib plate, and the convex surface of the groove one is arranged between the adjacent two air channel rib plates. The air channel rib plates and the air-cooled layer plates form the air channel of the air-cooled heat exchanger. A plate core is arranged in the liquid-cooled heat exchanger. The plate core comprises a plurality of stacked sheet group units. Each sheet group unit comprises two upper and lower stacked and welded sheet plates. The sheet plates are provided with alternately arranged grooves two and spherical dimples in the length direction. The pit diameter of the spherical dimple is equal to the short side length of the groove two. The height of the spherical dimple and the groove two is equal. The slot openings of the adjacent two sheet plates are buckled and arranged in a staggered manner in the width direction to form a wave-shaped inter-sheet channel communicated with the hot working medium channel of the air-cooled heat exchanger. The sheet group units are buckled in pairs in the length direction to form an inter-sheet group channel communicated with the cold working medium inlet and the cold working medium outlet of the liquid-cooled heat exchanger.

[0006] Preferably, a wind cover corresponding to the air channel is mounted on the air-cooled heat exchanger, and a fan is mounted on the wind cover.

[0007] Preferably, the length of the groove one is L3; the width of the groove one is L4; the pitch of the heat medium channel rib plate is L5; the pitch of the air channel rib plate is L6; the length of the air-cooled layer plate along the heat medium flow direction is L'; the length of the air-cooled layer plate along the air channel direction is L''; the pitch between the air channels is h2; the height of the groove one is h3; the pitch between the heat medium channels is h4; the thickness of the air-cooled layer plate is δ'; and:

[0008] L3=0.8L5; L4=0.5L6; L6=0.05L'; L5=0.125L''; h2=0.5L3; h3=δ'; h4=L4.

[0009] Preferably, the liquid-cooled heat exchanger is provided with a cold working medium inlet pipe box and a cold working medium outlet pipe box communicated with the inter-plate unit channels, the cold working medium inlet is communicated with the cold working medium inlet pipe box, and the cold working medium outlet is communicated with the cold working medium outlet pipe box.

[0010] Preferably, the liquid-cooled heat exchanger is provided with a distribution pipe box and a hot working medium outlet pipe box communicated with the hot working medium channels and the inter-plate channels, a plurality of working medium flow channel interfaces corresponding to the hot working medium channels are formed in the distribution pipe box, and the liquid-cooled heat exchanger is connected with a hot working medium inlet pipe box, and the hot working medium inlet is communicated with the hot working medium inlet pipe box.

[0011] Preferably, the number of the distribution pipe boxes is Wherein, L is the length of the plate core, mm; L1 is the pit diameter of the spherical pit or the short side length of the groove two, mm; and L2 is the long side length of the groove two, mm.

[0012] Preferably, L1=0.05L; and L2=2L1.

[0013] Preferably, the groove two and the spherical pit are arranged with two spherical pits spaced between every two groove two.

[0014] Preferably, the height of the spherical pit and the groove two is h1=2δ; and δ is the thickness of the plate sheet, mm.

[0015] The present application has the following beneficial effects:

[0016] 1. The present application combines the commonly used air-cooled heat exchange mode and liquid-cooled heat dissipation mode, so that the heat exchanger can cope with more working conditions, and can be switched at different environmental temperatures to ensure the best heat dissipation effect.

[0017] 2. While ensuring the heat exchange effect, by adding grooves and rib plates in the air-cooled heat dissipation heat exchanger, not only the heat exchange efficiency of the heat medium side and the heat exchange effect of the air side are enhanced, but also the heat exchange area is increased, so that the heat exchanger structure is more compact and the heat dissipation effect is better.

[0018] 3、 The structure is simple, and the manufacturing cost is low, so it is suitable for popularization and use. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, below the drawings needed to be used in the embodiments or the prior art description will be briefly introduced, obviously, the drawings described below are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the premise of the drawings.

[0020] Figure 1 It is the overall structure schematic diagram of the present application;

[0021] Figure 2 It is the internal section view of the liquid cooling heat exchanger of the present application;

[0022] Figure 3 It is the plate core structure schematic diagram of the liquid cooling heat exchanger of the present application;

[0023] Figure 4 It is the sheet group unit mechanism schematic diagram of the liquid cooling heat exchanger of the present application;

[0024] Figure 5 It is the plate sheet structure schematic diagram of the liquid cooling heat exchanger of the present application;

[0025] Figure 6 It is the internal structure schematic diagram of the air cooling heat exchanger of the present application;

[0026] BRIEF DESCRIPTION OF DRAWINGS

[0027] 1, hot working medium outlet pipe box; 2, liquid cooling heat exchanger; 3, cold working medium outlet pipe box; 4, cold working medium inlet pipe box; 5, cold working medium outlet; 6, hot working medium outlet; 7, cold working medium inlet; 8, fan; 9, fan cover; 10, air cooling heat exchanger; 11, hot working medium inlet pipe box; 12, hot working medium inlet; 13, plate core; 14, distribution pipe box; 15, working medium flow channel interface; 16, sheet interchannel; 17, sheet group unit interchannel; 18, air channel; 19, hot working medium channel; 20, groove two; 21, spherical dimple; 22, groove one; 23, hot working medium channel rib plate; 24, air channel rib plate. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application, obviously, the described embodiments are only some embodiments of the present application, and not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0029] As Figures 1 to 6 shown in the figure, the embodiment provides an integrated air-liquid dual-purpose heat exchanger, which comprises a transversely arranged air-cooled heat exchanger 10, a vertically arranged liquid-cooled heat exchanger 2 close to the hot working medium outlet end of the air-cooled heat exchanger 10, a hot working medium inlet 12 arranged at the end of the air-cooled heat exchanger 10 away from the hot working medium outlet 6, and a hot working medium channel 19 communicated between the hot working medium inlet 12 and the hot working medium outlet 6 and sequentially flowing through the air-cooled heat exchanger 10 and the liquid-cooled heat exchanger 2. A plurality of air-cooled layers are arranged in the air-cooled heat exchanger 10, and a plurality of rows of grooves I 22 arranged along the hot working medium flow direction are arranged on the air-cooled layers. Hot working medium channel rib plates 23 connecting adjacent two air-cooled layers are arranged on both sides of the grooves I 22, and the hot working medium channel rib plates 23 and the air-cooled layers form the hot working medium channel 19 of the air-cooled heat exchanger 10. Another side of the air-cooled layer corresponding to the hot working medium channel rib plate 23 is formed with a plurality of air channel rib plates 24 arranged perpendicularly to the hot working medium channel rib plate 23, and the convex surface of the groove I 22 is arranged between adjacent two air channel rib plates 24. The air channel rib plates 24 and the air-cooled layers form the air channel 18 of the air-cooled heat exchanger 10. A plate core 13 is arranged in the liquid-cooled heat exchanger 2. The plate core 13 comprises a plurality of stacked sheet group units. Each sheet group unit comprises two upper and lower stacked and welded sheet plates. The sheet plates are provided with alternately arranged grooves II 20 and spherical dimples 21 along the length direction. The diameter of the spherical dimple 21 is equal to the short side length of the groove II 20, and the height of the spherical dimple 21 and the groove II 20 is equal. The slot openings of adjacent two sheet plates are buckled and arranged in a staggered manner in the width direction to form a wave-shaped inter-sheet channel 16 communicated with the hot working medium channel 19 of the air-cooled heat exchanger 10. The sheet group units are buckled in the length direction to form an inter-sheet group channel 17 communicated with the cold working medium inlet 7 and the cold working medium outlet 5 of the liquid-cooled heat exchanger 2.

[0030] An air cover 9 corresponding to the air channel 18 is arranged on the air-cooled heat exchanger 10, and a fan 8 is arranged on the air cover 9. The length of the groove I 22 is L3; the width of the groove I 22 is L4; the interval of the hot working medium channel rib plate 23 is L5; the interval of the air channel rib plate 24 is L6; the length of the air-cooled layer along the hot working medium flow direction is L'; the length of the air-cooled layer along the air channel direction is L"; the interval between the air channels 18 is h2; the height of the groove I 22 is h3; the interval between the hot working medium channels 19 is h4; the thickness of the air-cooled layer is δ'; and: L3=0.8L5; L4=0.5L6; L6=0.05L'; L5=0.125L"; h2=0.5L3; h3=δ'; h4=L4.

[0031] The liquid cooling heat exchanger 2 is provided with a cold working medium inlet pipe box 4 and a cold working medium outlet pipe box 3 connected by a sheet group unit interchannel 17, the cold working medium inlet 7 is connected with the cold working medium inlet pipe box 4, and the cold working medium outlet 5 is connected with the cold working medium outlet pipe box 3. The liquid cooling heat exchanger 2 is provided with a distribution pipe box 14 and a hot working medium outlet pipe box 1 connected with the hot working medium channel 19 and the sheet interchannel 16, a plurality of working medium flow channel interfaces 15 corresponding to the hot working medium channel 19 are formed in the distribution pipe box 14, and the air cooling heat exchanger 10 is connected with a hot working medium inlet pipe box 11, and the hot working medium inlet 12 is connected with the hot working medium inlet pipe box 11.

[0032] The number of the distribution pipe boxes 14 Wherein, L is the length of the plate core 13, mm; L1 is the pit diameter of the spherical pit 21 or the short side length of the groove two 20, mm; L2 is the long side length of the groove two 20, mm. L1 = 0.05L; L2 = 2L1. The groove two 20 and the spherical pit 21 are arranged at an interval of two spherical pits 21 between every two grooves two 20. The height h1 of the spherical pit 21 and the groove two 20 is 2δ; δ is the thickness of the plate, mm.

[0033] The air cooling heat exchanger 10 and the liquid cooling heat exchanger 2 and the connection relationship of the related structures not described in detail in the embodiment adopt products or structures well known to those skilled in the art, and the connection relationship also adopts the existing connection mode well known to those skilled in the art, which will not be described in detail here.

[0034] The control of the air cooling heat exchanger 10 and the liquid cooling heat exchanger 2 in the embodiment adopts the existing control mode well known to those skilled in the art, which will not be described in detail here.

[0035] As shown in the figure, Figure 1 Under normal temperature conditions, the cold working medium inlet 7 and the cold working medium outlet 5 are closed, the fan 8 is started, the hot working medium outlet 6 and the hot working medium inlet 12 are opened; the hot working medium enters the hot working medium inlet pipe box 11 from the hot working medium inlet 12, is heated after passing through the working medium side flow channel 19 of the air cooling heat exchanger 10, enters the distribution pipe box 14, then flows through the sheet interchannel 16 of the liquid cooling heat exchanger 2 and enters the hot working medium outlet pipe box 1, and finally flows out through the hot working medium outlet 6; the normal temperature air is heated after passing through the air side flow channel 18 of the air cooling heat exchanger 10 and is discharged by the fan 8.

[0036] In the condition of high air temperature, such as in a fire, the cold working medium inlet 7 and the cold working medium outlet 5 are opened, the fan 8 is closed, and the hot working medium outlet 6 and the hot working medium inlet 12 are kept open. The hot working medium enters the hot working medium inlet pipe box 11 from the hot working medium inlet 12, enters the distribution pipe box 14 through the working medium side flow channel 19 of the air-cooled heat exchanger 10, then flows through the inter-plate channel 16 of the liquid-cooled heat exchanger 2 to release heat, enters the hot working medium outlet pipe box 1, and finally flows out through the hot working medium outlet 6. The cold working medium enters the cold working medium inlet pipe box 4 from the cold working medium inlet 7, absorbs heat through the inter-plate group channel 17 of the liquid-cooled heat exchanger 2, enters the cold working medium outlet pipe box 3, and finally flows out through the cold working medium outlet 5.

[0037] In this embodiment, the working medium side flow channel 19 of the air-cooled heat exchanger 10 is connected to the distribution pipe box 14 through the working medium flow channel interface 15. The distribution pipe box 14, the hot working medium outlet pipe box 1, and the inter-plate channel 16 of the plate core 13 are in communication. The cold working medium outlet pipe box 3, the cold working medium inlet pipe box 4, and the inter-plate group channel 17 of the plate core 13 are in communication.

[0038] In this embodiment, each plate group unit of the liquid-cooled heat exchanger is composed of two plate pieces. The plate pieces are buckled with each other and are staggered by a distance of 0.5L1 in the width direction. Thus, a continuous wave-shaped inter-plate channel is formed in the width direction between the two plate pieces, and the working medium flowing through the channel forms a wave flow, which can enhance the heat exchange effect. On both sides in the length direction, the plate pieces are closed by welding. Two plate group units are buckled with each other in the length direction to form an inter-plate group channel 17. The two plate group units are closed by welding on both sides in the width direction.

[0039] In this embodiment, the air flows through the heat exchanger 10 through the channel 18, and the hot working medium flows through the heat exchanger 10 through the channel 19. In the hot working medium channel, the working medium forms a wave flow and intermittently expands and contracts, which enhances the heat exchange efficiency. In the air channel, the air flow also forms a wave flow and intermittently expands and contracts, which also enhances the heat exchange effect on the air side. In addition, the addition of the grooves together with the rib plates increases the heat exchange area, so that the structure of the heat exchanger is more compact.

[0040] In this embodiment, the air-cooled heat exchanger and the liquid-cooled heat exchanger are combined to form an integrated air-liquid dual-purpose heat exchanger, which meets the different heat dissipation requirements in normal temperature conditions and high temperature conditions (such as in a fire), and has the advantages of compact structure and good heat dissipation effect.

[0041] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application belong to the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. An integrated air-liquid heat exchanger, characterized in that, The application relates to a heat exchanger, which comprises a transversely arranged air-cooled heat exchanger (10), a liquid-cooled heat exchanger (2) arranged vertically near the hot working medium outlet end of the air-cooled heat exchanger (10), a hot working medium inlet (12) arranged at the end of the air-cooled heat exchanger (10) away from the hot working medium outlet (6), a hot working medium channel (19) communicated between the hot working medium inlet (12) and the hot working medium outlet (6) and sequentially passing through the air-cooled heat exchanger (10) and the liquid-cooled heat exchanger (2), a plurality of air-cooled layer plates arranged in the air-cooled heat exchanger (10), a plurality of rows of grooves (22) arranged along the hot working medium flow direction on the air-cooled layer plates, hot working medium channel rib plates (23) arranged on both sides of the grooves (22) and connecting adjacent two air-cooled layer plates, the hot working medium channel rib plates (23) and the air-cooled layer plates forming the hot working medium channel (19) of the air-cooled heat exchanger (10), a plurality of air channel rib plates (24) arranged perpendicularly to the hot working medium channel rib plates (23) formed on the other side of the air-cooled layer plates corresponding to the hot working medium channel rib plates (23), the convex surface of the grooves (22) being arranged between adjacent two air channel rib plates (24), the air channel rib plates (24) and the air-cooled layer plates forming the air channel (18) of the air-cooled heat exchanger (10), a plate core (13) arranged in the liquid-cooled heat exchanger (2), the plate core (13) comprising a plurality of stacked sheet group units, each sheet group unit comprising two upper and lower stacked and welded sheet plates, the sheet plates being provided with alternately arranged grooves (20) and spherical dimples (21) along the length direction, the diameter of the spherical dimples (21) being equal to the length of the short side of the grooves (20), the height of the spherical dimples (21) and the grooves (20) being equal, the slots of adjacent two sheet plates being buckled and arranged in a staggered mode in the width direction to form a wave-shaped inter-sheet channel (16) communicated with the hot working medium channel (19) of the air-cooled heat exchanger (10), and the sheet group units being buckled in pairs in the length direction to form an inter-sheet group channel (17) communicated with the cold working medium inlet (7) and the cold working medium outlet (5) of the liquid-cooled heat exchanger (2).

2. The integrated air-liquid heat exchanger of claim 1, wherein The air-cooled heat exchanger (10) is provided with a corresponding air cover (9), and the air cover (9) is provided with a fan (8).

3. The integrated air and liquid heat exchanger of claim 1, wherein The length of the grooves (22) is L3; the width of the grooves (22) is L4; the interval of the hot working medium channel rib plates (23) is L5; the interval of the air channel rib plates (24) is L6; the length of the air-cooled layer plates along the hot working medium flow direction is L'; the length of the air-cooled layer plates along the air channel direction is L"; the interval between the air channels (18) is h2; the height of the grooves (22) is h3; the interval between the hot working medium channels (19) is h4; the thickness of the air-cooled layer plates is delta'; and L3=0.8L5; L4=0.5L6; L6=0.05L'; L5=0.125L"; h2=0.5L3; h3=delta'; and h4=L4. ​ 4. The integrated air and liquid heat exchanger of claim 1, wherein The liquid cooling heat exchanger (2) is provided with a cold working medium inlet pipe box (4) communicated with the fin group inter-unit channel (17), a cold working medium outlet pipe box (3), the cold working medium inlet (7) is communicated with the cold working medium inlet pipe box (4), and the cold working medium outlet (5) is communicated with the cold working medium outlet pipe box (3).

5. The integrated air-liquid heat exchanger of claim 1, wherein The liquid cooling heat exchanger (2) is provided with a distribution pipe box (14) communicated with the hot working medium channel (19) and the inter-fin channel (16), a hot working medium outlet pipe box (1), a plurality of working medium flow channel interfaces (15) corresponding to the hot working medium channel (19) are formed in the distribution pipe box (14), the air cooling heat exchanger (10) is connected with a hot working medium inlet pipe box (11), and the hot working medium inlet (12) is communicated with the hot working medium inlet pipe box (11).

6. The integrated air-liquid heat exchanger of claim 5, wherein The number of the distribution pipe boxes (14) Wherein, L is the length of the plate core (13), mm; L1 is the diameter of the ball-type pit (21) or the short side length of the groove two (20), mm; L2 is the long side length of the groove two (20), mm.

7. The integrated air-liquid heat exchanger of claim 6, wherein L1=0.05L; L2=2L1.

8. The integrated air-liquid heat exchanger of claim 1, wherein The recess two (20) and the spherical dimple (21) are arranged at intervals of two spherical dimples (21) between every two recesses two (20).

9. The integrated air and liquid heat exchanger of claim 1, wherein The height h1 of the spherical dimple (21) and the recess two (20) is 2δ; δ is the thickness of the plate, mm.

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