High-power closed cabinet heat exchanger

Abstract

The utility model relates to the technical field of heat exchangers, and discloses a high-power closed cabinet heat exchanger which comprises a hot air inlet, a plurality of heat exchange plates and a cold air outlet, the hot air inlet and the cold air outlet are respectively communicated with the inside of a closed cabinet, and the heat exchange plates are located outside a closed mechanism and comprise a plurality of heat exchange channels. The two ends of the heat exchange channel communicate with the hot air inlet and the cold air outlet correspondingly, and cooling fins are arranged on the outer sides of the heat exchange plates. A plurality of heat exchangers are used at the same time and installed on the top or the side face of the outer wall of the closed cabinet, an outer flow field fan and a cabinet inner module fan are further arranged, and efficient heat dissipation of the closed cabinet is achieved through the combined action of inner circulation and an outer flow field. The heat dissipation device can be flexibly designed according to the heat dissipation requirements of the closed cabinet, and provides a solution for the heat dissipation of the high-power closed cabinet which is large in heat productivity, not concentrated in internal heat sources and in a pan-heating state.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat exchanger technical field, concretely is a kind of high-power closed cabinet heat exchanger. BACKGROUND

[0002] Current in energy technology field, the energy equipment of high-power closed cabinet of power 1KW or more is widely used, such as new energy automobile charging pile, communication base station switch board, power ring cabinet etc..These high-power closed cabinet is high in power, and the heat dissipation is big, and it is often installed in outdoor, there is solar radiation;From the safety requirement, it is made into closed cavity, and the heat source in cavity is not concentrated, in the state of general heat. Such closed cabinet is difficult to dissipate heat, and existing ventilation and heat dissipation cannot meet the requirement. UTILITARIAN CONTENT

[0003] The utility model solves the technical problem to overcome the existing defects, provide a kind of high-power closed cabinet heat exchanger, export the inside of closed cabinet to the outside of cabinet, and reflow into the inside of closed cabinet after cooling by external environment wind, complete the heat dissipation in closed cabinet, can adapt to the high-power closed cabinet of large heat dissipation, can meet the heat dissipation demand, effectively solve the problem in background art.

[0004] To achieve the above object, the utility model provides the following technical scheme: a kind of high-power closed cabinet heat exchanger, including hot air inlet, several heat exchange plates and cold air outlet, the hot air inlet and the cold air outlet are communicated inside closed cabinet respectively, the heat exchange plate is located in the outside of closed mechanism, the several heat exchange plates include multiple heat exchange channels, the heat exchange channel two ends are communicated with the hot air inlet and the cold air outlet respectively, and the heat exchange plate outside is equipped with radiating fin.

[0005] The hot air inlet and cold air inlet include a bellows respectively, the bellows are six rectangular parallelepiped, one side is opened, and inlet fixed plate is installed at opening, one side of the bellows adjacent to opening is equipped with multiple channel mounting port, for installing the heat exchange plate, the number of channel mounting port is equal to the number of heat exchange plate;The hot air inlet and the cold air inlet are communicated with the inside of closed cabinet by the slot of one side of the closed cabinet cabinet wall, and the inlet fixed plate is used to fix and close the hot air inlet and the cold air inlet with the slot of closed cabinet cabinet wall.

[0006] Further, each channel mounting port of the hot air inlet and cold air inlet is also provided with a support ring for fixing one end of the heat exchange plate and sealing the connection.

[0007] The heat exchange plates comprise 3 to 10 pieces, preferably, and the number is determined according to the heat dissipation requirement of the closed cabinet; each heat exchange plate comprises a heat exchange plate channel, preferably, and the number is 8 to 40, preferably, and the number is determined according to the heat dissipation requirement of the closed cabinet.

[0008] The heat dissipation fins are preferably made of aluminum alloy thin plates, are in a shape of multiple bending, and are installed close to the outer walls of the heat exchange plates.

[0009] The high-power closed cabinet heat exchanger is used simultaneously, is installed on the outer wall of the closed cabinet in parallel and at equal distances, can be installed on the top of the closed cabinet, can be installed on the side of the closed cabinet, and is preferably installed on the side of the closed cabinet.

[0010] Further, the high-power closed cabinet heat exchanger further comprises an outer flow field fan, the outer flow field fan is installed on the outer wall of the closed cabinet, and the air flow direction is aligned with the heat dissipation fins between the heat exchange plates.

[0011] Further, the high-power closed cabinet heat exchanger further comprises a hot air passage, the hot air passage is connected with the hot air inlets of the plurality of heat exchangers, a plurality of module fans are further installed in the hot air passage, the air flow of each module fan is aligned with the hot air inlet of each heat exchanger, and the module fan provides driving force for the hot air flow into the hot air passage and the hot air inlet.

[0012] Further, the high-power closed cabinet heat exchanger further comprises a cold air collecting groove, the cold air collecting groove is connected with the cold air outlets of the plurality of heat exchangers, the cold air collecting groove is further provided with a plurality of cold air pipes, and the cold air pipes are further provided with a plurality of cold air discharge ports.

[0013] Compared with the prior art, the high-power closed cabinet heat exchanger has the following beneficial effects:

[0014] 1. The hot air in the closed cabinet is driven by the module fan into the heat exchanger hot air inlet, enters the heat exchange channel, and the cold air cooled by the heat exchanger returns to the inside of the closed cabinet from the cold air outlet, forming an internal circulation; the environmental wind is driven by the external flow field fan, passing through the gap between the heat exchange plates and the heat dissipation fins, taking away heat, forming an external flow field; the combined action of internal circulation and external flow field realizes efficient heat dissipation of the closed cabinet.

[0015] 2. The installation is carried out by slotting the cabinet wall, and the interface is sealed, which greatly improves the heat dissipation capacity of the closed cabinet without affecting the internal structure and sealing performance of the closed cabinet.

[0016] 3. Multiple heat exchangers can be used at the same time, the number of heat exchangers, the number of heat exchange channels, and the specifications of the external flow field fan and the module fan are selected according to the heat dissipation requirements of the closed cabinet, and the design is flexible to achieve the best effect at a proper cost.

[0017] 4. The utility model can be used for high-power closed cabinets with large heat generation, uncentralized internal heat source and heat spreading state, such as charging piles, power distribution cabinets and ring network cabinets, which can effectively meet the heat dissipation requirements. Whether it is a new closed mechanism design or a modification of the existing closed cabinet heat dissipation system, it provides a solution. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structure schematic diagram of the utility model;

[0019] Figure 2 is a structure schematic diagram of each component of the utility model;

[0020] Figure 3 is a heat exchange plate structure schematic diagram;

[0021] Figure 4 is Figure 3 is a partial enlarged schematic diagram of A;

[0022] Figure 5 is a heat dissipation fin structure schematic diagram;

[0023] Figure 6 is a second embodiment schematic diagram;

[0024] Figure 7 is a third embodiment schematic diagram.

[0025] In the figure: 1 heat exchanger, 2 hot air inlet, 3 heat exchange plate, 4 cold air outlet, 5 heat dissipation fin, 6 air bellow, 7 inlet fixed plate, 8, channel installation port, 9 support ring, 10 heat exchange channel, 11 closed cabinet, 12 external flow field fan, 13 hot air channel, 14 module fan, 15 cold air collection groove, 16 cold air pipe, 17 cold air exhaust port. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor fall within the scope of the present utility model.

[0027] Embodiment one, see Figures 1-5 The utility model provides a kind of high-power closed cabinet heat exchanger 1, including hot air inlet 2, several heat exchange plates 3 and cold air outlet 4, hot air inlet 2 and cold air outlet 4 are communicated with closed cabinet interior respectively, heat exchange plate 3 is located in closed mechanism outside, several heat exchange plates 3 include multiple heat exchange channels 10, heat exchange channel 10 two ends are communicated with hot air inlet 2 and cold air outlet 4 respectively, heat exchange plate 3 outside is equipped with cooling fin 5.

[0028] Hot air inlet 2 and cold air inlet 4 include a bellows 6 respectively, bellows 6 is six rectangular parallelepiped, one side is opened, and inlet fixed plate 7 is installed at opening, bellows 6 is equipped with multiple channel mounting port 8 in one side adjacent to opening, for installing heat exchange plate 3, the number of channel mounting port 8 is equal to the number of heat exchange plate 3;Hot air inlet 2 and cold air inlet 4 are communicated with closed cabinet interior by the slot of one side of closed cabinet cabinet wall, and inlet fixed plate 7 is used for the fixation and closure of hot air inlet 2 and cold air inlet 4 with the slot of closed cabinet cabinet wall.

[0029] Each channel mounting port 8 of hot air inlet 2 and cold air inlet 4 is also equipped with support ring 9, for fixing one end of heat exchange plate 3, and the connection is closed.

[0030] In the embodiment, the number of heat exchange plates contained in heat exchanger is 8, and the 8 heat exchange plates are installed in parallel and equidistantly;The number of heat exchange plate channels included in each heat exchange plate is 31.

[0031] Cooling fin 5 is preferably made of aluminum alloy sheet, is the shape of multiple bending, is installed closely to the outer wall of heat exchange plate. 3 cooling fins are evenly distributed and installed between every two heat exchange plate outer walls.

[0032] Embodiment two: see Figure 6 The utility model discloses high-power closed cabinet heat exchanger 1 has 5 simultaneously, and is installed in parallel and equidistantly on the outer wall top of closed cabinet 11.

[0033] See Figure 6The high-power closed cabinet heat exchanger further comprises an outer flow field fan 12 installed on the outer wall of the closed cabinet 11, and the air flow direction is aligned with the heat dissipation fins between the heat exchange plates 3. The outer flow field fan 12 makes the air flow at the top of the closed cabinet, and the external flowing air can drive the heat on the heat exchange channel, promote the cooling of the airflow passing through the heat exchange channel, and cooperate with the heat dissipation fins to improve the heat exchange efficiency of the heat exchange channel and the external air.

[0034] Embodiment three: refer to Figure 7 The high-power closed cabinet heat exchanger further comprises a hot air passage 13, the hot air passage 13 is communicated with the hot air inlets 2 of the plurality of heat exchangers 1, and a plurality of module fans 14 are further installed in the hot air passage 13. The air flow of each module fan 14 is aligned with the hot air inlet 2 of each heat exchanger 1, and the module fan 14 provides driving force for the hot air flow into the hot air passage and the hot air inlet.

[0035] Refer to Figure 7 The high-power closed cabinet heat exchanger further comprises a cold air collecting groove 15, the cold air collecting groove 15 is communicated with the cold air outlets 4 of the plurality of heat exchangers 1, and the cold air collecting groove 15 is further provided with a plurality of cold air pipes 16, and the cold air pipes 16 are further provided with a plurality of cold air discharge ports 17. The cold air pipe and the cold air discharge port are designed according to the internal structure of the closed cabinet, and the cold air is sent to the area with larger heat generation or is aligned with the component with large heat generation.

[0036] Embodiment four: the high-power closed cabinet heat exchanger is applied to the heat exchanger design of a certain type of high-power charging pile.

[0037] The power of the charging pile is 400kw, the heat dissipation requirement is that the temperature rise of the internal module copper bar is not more than 70K, and the environment temperature is 45℃. The original ventilation and heat dissipation system brings in air from the air inlet on one side of the cabinet through the fan in the cabinet, and brings out air from the air outlet on the other side to take away part of the heat. In the case of solar radiation, it is difficult to meet the heat dissipation requirement.

[0038] The high-power closed cabinet heat exchanger is applied, and simulation analysis shows that the best scheme is to use five heat exchangers, each heat exchanger comprises 14 heat exchange plates, the top of the equipment is perforated, the heat exchanger is installed horizontally at the top, and an outer flow field fan is arranged on one side. A cold air collecting groove is arranged, and a cold air passage and a cold air discharge port are installed, and the cold air is sent to the vicinity of the copper bar with large heat generation.

[0039] After testing, the above scheme effectively solves the heat dissipation problem and meets the heat dissipation index of the closed charging pile cabinet.

[0040] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sealed cabinet heat exchanger, characterized by: The heat air inlet and the cold air outlet are respectively communicated with the inside of the closed cabinet, the heat exchange plates are located outside the closed cabinet, the heat exchange plates comprise a plurality of heat exchange channels, the heat exchange channels are respectively communicated with the heat air inlet and the cold air outlet, and the heat exchange plates are provided with heat dissipation fins outside.

2. The sealed cabinet heat exchanger of claim 1, wherein: The heat air inlet and the cold air inlet respectively comprise a bellows, one side of the bellows is provided with an inlet fixing plate, one side of the bellows adjacent to the opening is provided with a plurality of channel mounting ports for mounting the heat exchange plates, the number of the channel mounting ports is equal to the number of the heat exchange plates, the heat air inlet and the cold air inlet are communicated with the inside of the closed cabinet through the slot in the cabinet wall, and the inlet fixing plate is used for fixing and sealing the heat air inlet and the cold air inlet with the slot in the cabinet wall.

3. The sealed cabinet heat exchanger of claim 2, wherein: Each channel mounting port of the heat air inlet and the cold air inlet is also provided with a support ring for fixing one end of the heat exchange plate and sealing the connection.

4. The sealed cabinet heat exchanger of claim 1, wherein: The number of the heat exchange plates is 3-10, the number of heat exchange channels in each heat exchange plate is 8-40, and the heat exchange plates are installed in parallel at equal distances.

5. The sealed cabinet heat exchanger of claim 1, wherein: The heat dissipation fins are made of aluminum alloy thin plates, are in a shape of multiple bending, and are installed close to the outer walls of the heat exchange plates.

6. The sealed cabinet heat exchanger of claim 1, wherein: A plurality of heat exchangers are used simultaneously and are installed in parallel at equal distances on the top or side of the outer wall of the closed cabinet.

7. The sealed cabinet heat exchanger of claim 1, wherein: An outer flow field fan is also included, the outer flow field fan is installed on the outer wall of the closed cabinet, and the air flow direction is aligned with the heat dissipation fins between the heat exchange plates.

8. The sealed cabinet heat exchanger of claim 1, wherein: A hot air channel is also included, the hot air channel communicates the heat air inlets of the plurality of heat exchangers, a plurality of module fans are also installed in the hot air channel, and the air flow of each module fan is aligned with the heat air inlet of each heat exchanger.

9. The sealed cabinet heat exchanger of claim 1, wherein: A cold air collecting groove is also included, the cold air collecting groove communicates the cold air outlets of the plurality of heat exchangers, the cold air collecting groove is also provided with a plurality of cold air pipes, and the cold air pipes are also provided with a plurality of cold air discharge ports.

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