CN210554289U

CN210554289U - Heat exchanger and use machine rack and machine that charges of this heat exchanger

Info

Publication number: CN210554289U
Application number: CN201921256351.3U
Authority: CN
Inventors: 穆晓鹏; 徐威; 李建; 李健
Original assignee: Qingdao Teld New Energy Technology Co Ltd
Current assignee: Qingdao Teld New Energy Technology Co Ltd
Priority date: 2019-08-05
Filing date: 2019-08-05
Publication date: 2020-05-19
Anticipated expiration: 2029-08-05

Abstract

The utility model discloses a heat exchanger and use machine rack and the machine that charges of this heat exchanger, this heat exchanger include the casing, set up first heat exchanger, second heat exchanger in the casing to and be located the cold passageway between the two, set up first fan in the cold passageway, hot passageway is set up at first heat exchanger and second heat exchanger top, set up the second fan in the hot passageway, set up cold passageway import and hot passageway export on the first heat exchanger, set up cold passageway export and hot passageway import on the second heat exchanger, the utility model discloses a heat exchanger noise is low, and is small, and fan protection level is high, long service life, and heat exchange efficiency is high.

Description

Heat exchanger and use machine rack and machine that charges of this heat exchanger

Technical Field

The utility model relates to a heat exchanger, in particular to heat exchanger and use machine rack and the machine that charges of this heat exchanger charge.

Background

The electric vehicle charger is used as an important supporting facility of the new energy vehicle, and the distribution and the quantity of the electric vehicle charger directly influence the popularization of the new energy vehicle. At present, a conventional electric vehicle charger adopts a straight ventilation type heat dissipation structure, although the conventional electric vehicle charger has higher heat dissipation efficiency, the conventional electric vehicle charger cannot reliably and stably operate in severe environments such as coasts, mining areas and the like due to the lack of protection, and the conventional electric vehicle charger needs to adopt a heat exchange type high-protection charger in such environments.

The main work task of the charger for the electric vehicle is to convert alternating current in a power grid into direct current required by the electric vehicle, the efficiency cannot be 100% in the conversion process, and the lost energy is mostly dissipated in the form of heat. The core device AC/DC power module in the charger is manufactured by adopting a power electronic technology, the internal devices are very sensitive to heat and have higher requirements on a heat dissipation system, and the existing heat exchange device has the problems of small heat exchange power, large volume, high noise, poor protection and the like, so that the comprehensive popularization and application cannot be realized.

SUMMERY OF THE UTILITY MODEL

For solving the technical problem, the utility model provides a heat exchanger and use machine rack and the machine that charges of this heat exchanger to reach and make the heat exchanger can satisfy the heat dissipation demand that electric automobile charges the machine, for the machine that charges in areas such as coastal, mining area brings the purpose of the heat dissipation solution of high protection, reliable, low noise, economy.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

the utility model provides a heat exchanger, includes the casing, set up first heat exchanger, second heat exchanger in the casing to and be located the cold passageway between the two, set up first fan in the cold passageway, hot passageway is set up at first heat exchanger and second heat exchanger top, set up the second fan in the hot passageway, set up cold passageway import and hot passageway export on the first heat exchanger, set up cold passageway export and hot passageway import on the second heat exchanger.

In the scheme, a cold sub-channel and a hot sub-channel are arranged in the first heat exchanger and the second heat exchanger at intervals, the cold sub-channel is communicated with the cold channel, the hot sub-channel is communicated with the hot channel, the cold sub-channel of the first heat exchanger is communicated with an inlet of the cold channel, and the hot sub-channel of the first heat exchanger is communicated with an outlet of the hot channel; and the cold sub-channel of the second heat exchanger is communicated with the outlet of the cold channel, and the hot sub-channel of the second heat exchanger is communicated with the inlet of the hot channel.

In the above scheme, at least one cold sub-channel and one hot sub-channel are respectively arranged in the first heat exchanger and the second heat exchanger, and the cold sub-channel and the hot sub-channel are longitudinally arranged in parallel along the thickness direction of the shell.

In the above scheme, the first fan is an axial flow fan or a mixed flow fan, and the second fan is a centrifugal fan or a mixed flow fan.

In the scheme, the cold sub-channel and the hot sub-channel are both internally provided with the corrugated fins.

In the above scheme, the inlet of the cold channel is arranged on the side surface of the shell, and the outlet of the hot channel is arranged at the bottom of the shell; the cold channel outlet is arranged on the side surface of the shell, and the hot channel inlet is arranged at the bottom of the shell.

In the above scheme, an inclined air deflector is arranged above the first heat exchanger in the heat channel.

A charger cabinet is provided with the heat exchanger as claimed in claim 1 at the top, the cold channel inlet and the cold channel outlet are respectively communicated with the outside air, and the hot channel outlet and the hot channel inlet are respectively communicated with the inside of the cabinet.

A charger comprises a cabinet, wherein a charging power supply is arranged in the cabinet, the top of the cabinet is provided with the heat exchanger as claimed in claim 1, the inlet and the outlet of the cold channel are respectively communicated with the outside air, and the outlet and the inlet of the hot channel are respectively communicated with the area where the charging power supply in the cabinet is located.

Through the technical scheme, the utility model provides a heat exchanger sets up first fan in the middle of two sets of heat exchangers, and first fan flows in the cold passageway import of first heat exchanger with external air conditioning flow through suction, and the back is impressed the air current through pressure second heat exchanger cold subchannel and is flowed to the external world. The second fan is arranged in the middle of the hot channel of the two groups of heat exchangers, hot air in the cabinet flows into the hot channel inlet through suction force, then the hot air is pressed into the hot sub-channel of the first heat exchanger through pressure, and after the hot air and cold air fully exchange heat, the hot air flows into the cabinet to cool the charging power supply in the cabinet. The utility model discloses following beneficial effect has:

1. the first fan and the second fan of the utility model are both arranged in the middle area of the two groups of heat exchangers, the air flow contacted by the fans is warm and warm air flow, thereby avoiding the direct contact of the fans with high-temperature or low-temperature gas, being beneficial to improving the operation environment of the fans and further prolonging the service life of the fans;

2. the first fan is arranged in the middle area of the two groups of heat exchangers, rainwater and the like in the outside air are blocked by the heat exchangers, the influence on the fan is almost avoided, and the protection level of the fan is indirectly improved;

3. the fan is arranged in the middle area of the two groups of heat exchangers, and pneumatic and mechanical noises generated by the fan are blocked by the heat exchangers, so that the noise emission quantity of the fan is reduced, and the noise reduction of the heat exchangers is realized;

4. the fan and the heat exchanger are skillfully embedded and integrated, so that the overall volume of the heat exchanger is reduced;

5. the heat exchanger fully utilizes the ventilation characteristics of centrifugal, axial flow and mixed flow fans, avoids unnecessary pressure loss caused by sudden change of airflow direction, and improves the working efficiency of the heat exchanger;

6. the heat exchanger adopts a two-stage heat exchange structure consisting of the first heat exchanger, the second heat exchanger, the first fan and the second fan, and is beneficial to improving the heat exchange effect and the heat exchange efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.

Fig. 1 is a front sectional view of a heat exchanger according to an embodiment of the present invention;

fig. 2 is a left side view of the first heat exchanger disclosed in the embodiment of the present invention;

fig. 3 is a front cross-sectional view of a charger using the heat exchanger disclosed in the embodiment of the present invention.

In the figure, 1, a housing; 2. a first heat exchanger; 3. a second heat exchanger; 4. a cold aisle; 5. a first fan; 6. a hot aisle; 7. a second fan; 8. a cold sub-channel; 9. a thermal sub-channel; 10. a cold aisle inlet; 11. a hot channel outlet; 12. an outlet of the cold channel; 13. a hot channel inlet; 14. a cabinet; 15. a charging power supply; 16. an air guide clapboard; 17. an air deflector; 18. and a fin.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

The utility model provides a heat exchanger and use machine rack and the machine that charges of this heat exchanger, this heat exchanger have solved current heat exchanger because of the problem in the aspect of heat transfer power, protection, noise, volume, heat exchange efficiency etc, make the heat dissipation demand that the electric automobile charges the machine, for the machine that charges in areas such as coastal, mining area brings high protection, reliable, economic heat dissipation solution.

The heat exchanger shown in fig. 1 and 2 comprises a shell 1, wherein a first heat exchanger 2, a second heat exchanger 3 and a cold channel 4 located between the first heat exchanger 2 and the second heat exchanger 3 are arranged in the shell 1, a first fan 5 is arranged in the cold channel 4, a hot channel 6 is arranged at the top of the first heat exchanger 2 and the top of the second heat exchanger 3, a second fan 7 is arranged in the hot channel 6, a cold channel 8 and a hot channel 9 are arranged in the first heat exchanger 2 and the second heat exchanger 3 at intervals, the cold channel 8 is communicated with the cold channel 4, the hot channel 9 is communicated with the hot channel 6, a cold channel inlet 10 is arranged on the cold channel 8 of the first heat exchanger 2, and a hot channel outlet 11 is arranged on the hot channel 9; the cold sub-channel 8 of the second heat exchanger 3 is provided with a cold channel outlet 12, and the hot sub-channel 9 is provided with a hot channel inlet 13. The cold channel inlet 10 is arranged on the side surface of the shell 1, and the hot channel outlet 11 is arranged at the bottom of the shell 1; the cold aisle outlet 12 is arranged at the side of the housing 1 and the hot aisle inlet 13 is arranged at the bottom of the housing 1. An inclined air deflector 17 is provided in the hot aisle 6 above the first heat exchanger 2.

In this embodiment, the first fan 5 is an axial flow fan or a mixed flow fan, and the second fan 7 is a centrifugal fan or a mixed flow fan, so that unnecessary pressure loss caused by sudden change of the airflow direction is avoided, and the work efficiency of the heat exchanger is improved.

The suction inlet of the first fan 5 faces the inlet 10 direction of the cold channel of the first heat exchanger 2, and the air outlet of the first fan 5 faces the inside of the cold channel 4, i.e. the outlet 12 direction of the cold channel of the second heat exchanger 3. The air suction opening of the second fan 7 faces the hot channel inlet 13 of the second heat exchanger 3, and the air outlet of the second fan 7 faces the inside of the hot channel 6, i.e. the hot channel outlet 11 of the first heat exchanger 2.

As shown in fig. 2, corrugated fins 18 are provided in both the cold sub-passageway 8 and the hot sub-passageway 9. The first heat exchanger 2 and the second heat exchanger 3 are respectively provided with at least one cold sub-channel 8 and one hot sub-channel 9, and the cold sub-channels and the hot sub-channels are longitudinally arranged in parallel along the thickness direction of the shell. The corrugated fin structure is relatively cheap and easy to purchase, the cost is greatly reduced compared with a heat pipe type, no refrigerant is in the corrugated fin structure, the leakage problem is avoided, and the reliability of the heat exchanger is improved.

As shown in fig. 3, the heat exchanger is arranged at the top of the charger cabinet, the cold channel inlet 10 and the cold channel outlet 12 are respectively communicated with the outside air, and the hot channel outlet 11 and the hot channel inlet 13 are respectively communicated with the inside of the charger cabinet.

A charger comprises a cabinet, wherein a charging power supply 15 is arranged in the cabinet 14, the top of the cabinet 14 is provided with the heat exchanger, a cold channel inlet 10 and a cold channel outlet 12 are respectively communicated with outside air, and a hot channel outlet 11 and a hot channel inlet 13 are respectively communicated with the area where the charging power supply 15 in the cabinet is located. In the cabinet 14, a wind guide partition 16 for guiding the cooled wind into the region where the charging power supply 15 is located is provided between the hot aisle outlet 11 and the charging power supply 15, and is isolated from the rest of the cabinet 14.

The specific working mode is as follows:

when the heat exchanger works, the first fan 5 works to draw the right side of the fan into a negative pressure state, external cold air enters the cold sub-channels 8 in the first heat exchanger 2 from the outside through the cold channel inlet 10 due to pressure difference and then flows into the cold channel 4 of the heat exchanger, warm cold air heated by the first heat exchanger 2 flows through the first fan 5 and is pressed into the second heat exchanger 3 under the action of the fan, and the warm cold air flows out of the cold channel outlet 12 to the external environment after passing through the cold sub-channels 8 of the second heat exchanger 3.

Under the action of the second fan 7, hot air generated by the operation of the charging power supply 15 enters the hot sub-channels 9 of the second heat exchanger 3 from the hot channel inlet 13 and then flows into the hot channel 6 of the heat exchanger, the hot air exchanges heat with cold air in the second heat exchanger 3 in the flowing process to become warm air, enters the hot sub-channels 9 of the first heat exchanger 2 under the action of the second fan 7, and is cooled again through the first heat exchanger 2, so that the warm air becomes warm and cold air. The air deflector 17 is arranged in the hot channel 6, so that air flow can smoothly flow into the first heat exchanger 2.

After warm and cold air flows out of the heat exchanger through the hot channel outlet 11, the warm and cold air flows into an air inlet area in front of the charging power supply 15 of the charger through the air guide of the air guide partition plate 16, the air flow takes heat generated by the work of the charging power supply 15 out through the charging power supply 15, the heat is changed into hot air, the hot air flows out of an air outlet area of the charging power supply, and the hot air enters the heat exchanger through the hot channel inlet 13 under the action of the second fan 7 to further perform the next heat exchange cycle.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The heat exchanger is characterized by comprising a shell, wherein a first heat exchanger, a second heat exchanger and a cold channel between the first heat exchanger and the second heat exchanger are arranged in the shell, a first fan is arranged in the cold channel, a hot channel is arranged at the tops of the first heat exchanger and the second heat exchanger, a second fan is arranged in the hot channel, a cold channel inlet and a hot channel outlet are arranged on the first heat exchanger, and a cold channel outlet and a hot channel inlet are arranged on the second heat exchanger.

2. The heat exchanger according to claim 1, wherein a cold sub-channel and a hot sub-channel are arranged in each of the first heat exchanger and the second heat exchanger at intervals, the cold sub-channel is communicated with the cold channel, the hot sub-channel is communicated with the hot channel, the cold sub-channel of the first heat exchanger is communicated with the inlet of the cold channel, and the hot sub-channel of the first heat exchanger is communicated with the outlet of the hot channel; and the cold sub-channel of the second heat exchanger is communicated with the outlet of the cold channel, and the hot sub-channel of the second heat exchanger is communicated with the inlet of the hot channel.

3. The heat exchanger of claim 1, wherein at least one cold sub-channel and at least one hot sub-channel are respectively arranged in the first heat exchanger and the second heat exchanger, and the cold sub-channels and the hot sub-channels are longitudinally arranged in parallel along the thickness direction of the shell.

4. The heat exchanger of claim 1, wherein the first fan is an axial fan or a mixed flow fan, and the second fan is a centrifugal fan or a mixed flow fan.

5. The heat exchanger of claim 3, wherein corrugated fins are disposed in both the cold and hot sub-channels.

6. The heat exchanger of claim 1, wherein the cold aisle inlet is disposed at a side of the housing and the hot aisle outlet is disposed at a bottom of the housing; the cold channel outlet is arranged on the side surface of the shell, and the hot channel inlet is arranged at the bottom of the shell.

7. The heat exchanger of claim 1, wherein an inclined air deflection plate is disposed within the hot aisle above the first heat exchanger.

8. A charger cabinet is characterized in that the top of the cabinet is provided with a heat exchanger as claimed in any one of claims 1 to 7, the inlet and the outlet of the cold channel are respectively communicated with the outside air, and the outlet and the inlet of the hot channel are respectively communicated with the inside of the cabinet.

9. A charger comprises a cabinet, wherein a charging power supply is arranged in the cabinet, and the charger is characterized in that the top of the cabinet is provided with the heat exchanger as claimed in any one of claims 1 to 8, the inlet of the cold channel and the outlet of the cold channel are respectively communicated with the outside air, and the outlet of the hot channel and the inlet of the hot channel are respectively communicated with the area where the charging power supply in the cabinet is located.