CN111010846A - Heat exchanger substrate of plate-type frequency converter, heat exchanger, frequency converter and automatic temperature adjusting method of frequency converter - Google Patents
Heat exchanger substrate of plate-type frequency converter, heat exchanger, frequency converter and automatic temperature adjusting method of frequency converter Download PDFInfo
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- CN111010846A CN111010846A CN201911104448.7A CN201911104448A CN111010846A CN 111010846 A CN111010846 A CN 111010846A CN 201911104448 A CN201911104448 A CN 201911104448A CN 111010846 A CN111010846 A CN 111010846A
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- heat exchanger
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/20927—Liquid coolant without phase change
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/20945—Thermal management, e.g. inverter temperature control
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Power Engineering (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The heat exchanger base plate of the plate-type frequency converter comprises two base plates, wherein a runner groove is formed in the bottom surface of one base plate, a plurality of square grooves for a cooling medium to flow through are formed in the runner groove in a dividing mode, a seal is formed between the two base plates, the runner groove is sealed between the two base plates, a cooling medium inlet and a cooling medium outlet are formed in one base plate, and the cooling medium inlet and the cooling medium outlet are respectively communicated with the two ends of the runner groove. The flow channel groove is formed between the two sealed base plates, the flow channel groove is internally divided into a plurality of square grooves for the refrigerant to flow through, the refrigerant flowing through the flow channel groove flows through each square groove, the heat dissipation area is increased, the heat dissipation performance is increased, the condensate water can be prevented from being generated due to local supercooling, and meanwhile, the flow channel groove with special structural design can be matched with the installation of high-power devices with various specifications, so that the cost of the frequency converter can be greatly reduced.
Description
Technical Field
The invention relates to the technical field of frequency converters, in particular to a heat exchanger substrate of a plate-type frequency converter, a heat exchanger, a frequency converter and an automatic temperature adjusting method of the frequency converter.
Background
At present, the heat exchange modes of the power device comprise air cooling, water cooling and natural cooling, however, the heat productivity of the power device is rapid, the heat productivity is increased along with the improvement of the power level, the heat exchange requirements of the traditional air cooling and natural cooling cannot be met, and the water-cooled heat exchanger is excellent in heat exchange effect and small in size. Most of water-cooled heating panel inner flow channels are mostly circular hole shape runner, and the runner is single, and the heat transfer effect is general, and the heat exchanger can only match a power device, and the commonality is relatively poor. The traditional water-cooled heat exchanger is not provided with a temperature monitoring device, cooling media flowing into a radiator cannot be increased along with the improvement of module power, and a module cannot be controlled within an optimal efficiency range.
The utility model discloses a utility model application number 201320483399.4 discloses a high-power electronic components liquid cooling ware water course structure, it constitutes a closed cavity by heat dissipation bottom plate and heat dissipation casing, is provided with inlet opening and outlet opening respectively in the both sides of heat dissipation casing, and the cooling water forms the rivers passageway from inlet opening through closed cavity to outlet opening, is provided with the fin in closed cavity. The utility model discloses a can obtain high efficiency, low noise, low cost to and comprehensive effect such as commonality are strong.
Application number 201220665270.0's utility model discloses a water-cooling radiator, including base plate, end cap, joint and holding screw, the inside processing of base plate has crisscross pore anyhow, pore and end cap and holding screw pass through the screw thread and closely cooperate in the base plate, and the pore becomes the snakelike runner that has import and export in the base plate, and import and export are all installed and are connected. The cold radiator directly punches holes on the aluminum plate, and then seals part of the flow channel to form a complete snake-shaped flow channel, so that the processing technology is improved, the heat transfer is enhanced, and meanwhile, the turbulence effect of fluid is further enhanced by the internal turbulence generator, so that the temperature of the inlet section plate and the outlet section plate cannot be too far apart from each other, the normal work of a power electronic device is not influenced, and the heat dissipation requirement of a high-power module is difficult to meet.
Although the prior art adopts the water cooling plate flow channel to solve the heat dissipation problem, the heat dissipation performance is relatively low, and when the temperature difference between the cold plate and the environment is large, the risk of generating condensed water exists.
Disclosure of Invention
One of the objectives of the present invention is to provide a heat exchanger substrate of a plate-type frequency converter, which avoids the disadvantages in the prior art, has good heat dissipation performance, does not have the risk of generating condensed water when the temperature difference between a cold plate and the environment is large, and can meet the heat dissipation requirement of a high-power module.
The purpose of the invention is realized by the following technical scheme:
the heat exchanger base plate of the plate-type frequency converter comprises two base plates, wherein one base plate is provided with a flow channel groove on the bottom surface, the flow channel groove is internally divided into a plurality of square grooves for a cooling medium to flow through, a seal is formed between the two base plates, the flow channel groove is sealed between the two base plates, one base plate is provided with a cooling medium inlet and a cooling medium outlet, and the cooling medium inlet and the cooling medium outlet are respectively communicated with two ends of the flow channel groove. The flow channel groove is formed between the two sealed base plates, and the flow channel groove is internally divided into a plurality of square grooves for the refrigerant to flow through, so that the refrigerant flowing through the flow channel groove must flow through each square groove, the heat dissipation area is increased, the heat dissipation performance is increased, the condensate water can be prevented from being generated due to local supercooling, meanwhile, the flow channel groove with a special structural design can be matched with the installation of high-power devices with various specifications, and the cost of the frequency converter can be greatly reduced.
Furthermore, the runner grooves are arranged on the substrate in a multi-path series-parallel connection mode. The runner grooves are arranged on the substrate in a multi-path series-parallel connection mode, the distribution area of the runner grooves on the substrate can be increased, the heat dissipation area is increased, the heat dissipation performance is improved, condensate water can be prevented from being produced due to local supercooling, and meanwhile the runner grooves in special distribution can be matched with the installation of high-power devices in various specifications.
Furthermore, one of the base plates is provided with a plurality of bolt holes for matching and mounting a plurality of specifications of high-power devices. A plurality of bolt holes used for matching and installing various specifications of high-power devices are formed in one substrate, so that the high-power devices can be screwed into the bolt holes through bolts to be fixed on the substrate.
Furthermore, temperature sensors are respectively installed on the refrigerant inlet and the refrigerant outlet and are electrically connected with the main control board. The temperature sensors are respectively arranged at the refrigerant inlet and the refrigerant outlet to monitor the current temperature in real time, the temperature data collected by the temperature sensors are transmitted to the main control board, the opening and closing degree of the electronic expansion valve is adjusted through algorithm operation, the flow of the refrigerant in the radiator is changed, and the temperature of the radiator is controlled within a reasonable range, so that the device is prevented from being damaged by condensate water.
Further, the refrigerant inlet and the refrigerant outlet are respectively provided with a refrigerant pipe. The refrigerant inlet and the refrigerant outlet are respectively provided with a refrigerant pipe, so that the refrigerant in the substrate can flow in or out conveniently.
Furthermore, the refrigerant pipe is arranged in a Z-shaped bending mode. The refrigerant pipe is Z-shaped and bent, so that the deformation and the falling off in the transportation process are greatly reduced.
Furthermore, the base plate is an aluminum plate, and the two aluminum plates are sealed by vacuum brazing. The base plate adopts aluminum plate, and two aluminum plates adopt vacuum brazing to seal simultaneously, make the leakproofness between two base plates good, small, light in weight, anticorrosive ability reinforce, under abominable operational environment, can guarantee the safe handling of high-power device on the heat exchanger.
The invention has the beneficial effects that: the heat exchanger base plate of the plate-type frequency converter comprises two base plates, wherein a flow channel groove is formed in the bottom surface of one base plate, a plurality of square grooves for a cooling medium to flow through are formed in the flow channel groove in a dividing mode, a seal is formed between the two base plates, the flow channel groove is sealed between the two base plates, a cooling medium inlet and a cooling medium outlet are formed in one base plate, and the cooling medium inlet and the cooling medium outlet are respectively communicated with the two ends of the flow channel groove. The flow channel groove is formed between the two sealed substrates, and the flow channel groove is divided into a plurality of square grooves for the refrigerant to flow through, so that the refrigerant flowing through the flow channel groove must flow through each square groove, the heat dissipation area is increased, the heat dissipation performance is improved, the condensate water generated by local supercooling can be prevented, meanwhile, the flow channel groove with a special structural design can be matched with the installation of high-power devices with various specifications, and the cost of the frequency converter can be greatly reduced.
The invention also aims to avoid the defects in the prior art and provide a heat exchanger, the heat exchanger uses the heat exchanger base plate of the plate-type frequency converter, because the runner groove is arranged between the two base plates which form the seal, and the runner groove is divided into a plurality of square grooves for the refrigerant to flow through, the refrigerant flowing through the runner groove must flow through each square groove, the heat dissipation area is increased, the heat dissipation performance is improved, the condensate water generated by local supercooling can be prevented, meanwhile, the runner groove with the special structural design can be matched with the installation of high-power devices with various specifications, and the cost of the frequency converter can be greatly reduced.
The invention also aims to avoid the defects in the prior art and provide the frequency converter, the frequency converter uses the heat exchanger, as the runner groove is arranged between the two sealed substrates, and the runner groove is divided into a plurality of square grooves for the refrigerant to flow through, the refrigerant flowing through the runner groove must flow through each square groove, the heat dissipation area is increased, the heat dissipation performance is improved, the condensate water can be prevented from being generated due to local supercooling, and meanwhile, the runner groove with a special structural design can be matched with the installation of high-power devices with various specifications, and the cost of the frequency converter can be greatly reduced.
The fourth purpose of the present invention is to avoid the disadvantages in the prior art and to provide an automatic temperature adjustment method for the frequency converter, which comprises the following steps:
s1: the temperature monitoring circuit monitors the working temperature of the frequency converter and transmits the real-time temperature condition to the control system;
s2: the control system analyzes the real-time temperature condition and controls the opening of the electronic expansion valve and the refrigerant flow of the refrigerant system to control the heat exchange effect of the heat exchanger according to the condition, thereby realizing the function of automatically adjusting the temperature of the frequency converter.
Drawings
The invention is further illustrated by means of the attached drawings, but the embodiments in the drawings do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be derived on the basis of the following drawings without inventive effort.
Fig. 1 is a schematic view of the overall structure of a substrate with a runner groove formed in a heat exchanger substrate of a plate-type frequency converter according to the present invention.
Fig. 2 is a side view showing the overall structure of a heat exchanger base plate of a plate-type frequency converter of the present invention.
Fig. 3 is a control flow chart of an automatic temperature adjustment method of a frequency converter according to the present invention.
The figure includes:
the structure comprises a base plate 1, a runner groove 2, a refrigerant inlet 3, a refrigerant outlet 4, bolt holes 5, a temperature sensor 6 and a refrigerant pipe 7.
Detailed Description
The invention is further described with reference to the following examples.
Example 1
The heat exchanger substrate of the plate-type frequency converter in this embodiment is shown in fig. 1-2, and includes two substrates 1, one of them is that a channel groove 2 is opened on the bottom surface of the substrate 1, a plurality of square grooves for the cooling medium to flow through are formed in the channel groove 2 by division, two the channel groove 2 is sealed between the substrates 1, the channel groove 2 can be opened on the surface contacting between the two substrates 1, one of them is that the substrate 1 is opened with a cooling medium inlet 3 and a cooling medium outlet 4, and the cooling medium inlet 3 and the cooling medium outlet 4 are respectively communicated with two ends of the channel groove 2. Through seting up runner groove 2 between two sealed base plates 1 of formation, simultaneously with the interior division of runner groove 2 form a plurality of square grooves that supply the refrigerant to flow through, make the refrigerant in the runner groove 2 of flowing through must flow through from every square inslot, heat radiating area has been increased, heat dispersion has been increased, can prevent that local supercooling from producing the comdenstion water, runner groove 2 of special structural design can match the installation of the high-power device of multiple specification simultaneously, specifically the highest 240KW that can match, but the cost of greatly reduced converter.
The runner channels 2 are arranged on the substrate 1 in a multi-channel serial-parallel manner, specifically, six channels of serial-parallel connection may be adopted, and the number of the channels may be increased or decreased according to the requirement, and the channels may be changed into a spiral shape or other similar shapes. The runner grooves 2 are arranged on the substrate 1 in a multi-channel series-parallel mode, the distribution area of the runner grooves 2 on the substrate 1 can be increased, the heat dissipation area is increased, the heat dissipation performance is improved, condensate water can be prevented from being produced due to local supercooling, and meanwhile the runner grooves 2 in special distribution can also be matched with installation of high-power devices in various specifications.
One of the base plates 1 is provided with a plurality of bolt holes 5 for matching and mounting devices with various specifications and high probability. One of the base plates 1 is provided with a plurality of bolt holes 5 for matching and mounting a plurality of specifications of high-power devices, so that the high-power devices can be fixed on the base plate 1 by screwing bolts into the bolt holes 5.
Temperature sensors 6 are respectively installed on the refrigerant inlet 3 and the refrigerant outlet 4, and the temperature sensors 6 are electrically connected with the main control board. The temperature sensors 6 are respectively arranged at the refrigerant inlet 3 and the refrigerant outlet 4 to monitor the current temperature in real time, the temperature data collected by the temperature sensors 6 are transmitted to the main control board, the opening and closing degree of the electronic expansion valve is adjusted through algorithm operation, the flow of the refrigerant in the radiator is changed, the temperature of the radiator is controlled within a reasonable range, and therefore the device is prevented from being damaged by condensate water.
The refrigerant inlet 3 and the refrigerant outlet 4 are respectively provided with a refrigerant pipe 7. The refrigerant inlet 3 and the refrigerant outlet 4 are respectively provided with a refrigerant pipe 7 for facilitating the inflow or outflow of the refrigerant in the substrate 1. The refrigerant pipe 7 is connected to the refrigerant inlet 3 and the refrigerant outlet 4 through a bell mouth and an M16 pipe joint.
The refrigerant pipe 7 is arranged in a Z-shaped bending mode. Refrigerant pipe 7 is the Z type and bends the setting, greatly reduced deformation and the setting that drops in the transportation.
The base plate 1 is an aluminum plate, and the two aluminum plates are sealed by vacuum brazing. The base plate 1 adopts aluminum plate, and two aluminum plates adopt vacuum brazing to seal simultaneously, make the leakproofness between two base plates 1 good, small, light in weight, anticorrosive ability reinforce, under abominable operational environment, can guarantee the safe handling of high-power device on the heat exchanger.
Example 2
This embodiment provides a heat exchanger, this heat exchanger uses embodiment 1 the heat exchanger base plate of plate-type converter, because through seting up runner groove 2 between two sealed base plates 1 of formation, simultaneously with the interior division of runner groove 2 form a plurality of square grooves that supply the refrigerant to flow through, make the refrigerant in the runner groove 2 of flowing through must follow every square inslot and flow through, heat radiating area has been increased, heat dispersion has been increased, can prevent that local supercooling from producing the comdenstion water, runner groove 2 of special structural design can match the installation of the high-power device of multiple specification simultaneously, specifically the highest 240KW that can match, but the cost of greatly reduced converter.
Example 3
This embodiment provides a converter, this converter uses embodiment 2 the heat exchanger, because through set up runner groove 2 between two sealed base plates 1 of formation, simultaneously with the interior division of runner groove 2 form a plurality of square grooves that supply the refrigerant to flow through, make the refrigerant in the runner groove 2 of flowing through must follow every square inslot and flow through, the heat radiating area has been increased, heat dispersion has been increased, can prevent that local supercooling from producing the comdenstion water, special structural design's runner groove 2 can match the installation of the high-power device of multiple specification simultaneously, concrete highest matable KW 240, but greatly reduced converter's cost.
In the frequency converter, the main heating electronic devices comprise an IGBT module, a diode, a reactor, a copper bar, a main control board and the like. The IGBT and the diode are sensitive to temperature and generate a large amount of heat. In the aspect of electronic device installation, the IGBT and the diode are brushed with the heat dissipation paste and then fastened on the heat exchanger through bolts. When the heat exchanger normally operates, the IGBT and the diode are installed on the heat exchanger, the heat exchanger is connected to a refrigerant system, and refrigerant enters the heat exchanger from an inlet and flows out from an outlet through 6 paths of series-parallel pipelines. Meanwhile, a plurality of temperature monitoring devices are arranged on the heat exchanger to transmit current data in real time, and after the master control system receives the data, the opening and closing degree of the electronic expansion valve is adjusted to control the flow speed of a refrigerant flowing into the heat exchanger, so that the temperature difference between the heat exchanger and the environment is reduced, and the generation of condensed water is prevented.
Example 4
The present embodiment provides an automatic temperature adjustment method for an inverter according to embodiment 3, as shown in fig. 3, including the following steps:
s1: the temperature monitoring circuit monitors the working temperature of the frequency converter and transmits the real-time temperature condition to the control system;
s2: the control system analyzes the real-time temperature condition and controls the opening of the electronic expansion valve and the refrigerant flow of the refrigerant system to control the heat exchange effect of the heat exchanger according to the condition, thereby realizing the function of automatically adjusting the temperature of the frequency converter.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. The utility model provides a heat exchanger base plate of plate-type frequency converter, includes two base plates, its characterized in that: the bottom surface of one of the base plates is provided with a flow channel groove, the flow channel groove is internally divided into a plurality of square grooves for the cooling medium to flow through, a seal is formed between the two base plates to seal the flow channel groove between the two base plates, one of the base plates is provided with a cooling medium inlet and a cooling medium outlet, and the cooling medium inlet and the cooling medium outlet are respectively communicated with two ends of the flow channel groove.
2. A heat exchanger base plate of a plate-type frequency converter according to claim 1, wherein: the runner grooves are arranged on the substrate in a multi-path series-parallel connection mode.
3. A heat exchanger base plate of a plate-type frequency converter according to claim 1, wherein: one of the base plates is provided with a plurality of bolt holes for matching and mounting devices with various specifications and high probability.
4. A heat exchanger base plate of a plate-type frequency converter according to claim 1, wherein: the refrigerant inlet with the refrigerant export is installed temperature sensor respectively, temperature sensor and main control board electric connection.
5. A heat exchanger base plate of a plate-type frequency converter according to claim 1, wherein: the refrigerant inlet and the refrigerant outlet are respectively provided with a refrigerant pipe.
6. The heat exchanger base plate of a plate-type frequency converter according to claim 5, wherein: the refrigerant pipe is arranged in a Z-shaped bending mode.
7. A heat exchanger base plate of a plate-type frequency converter according to claim 1, wherein: the base plate is an aluminum plate, and the two aluminum plates are sealed by vacuum brazing.
8. A heat exchanger, characterized by: heat exchanger base plate comprising a plate frequency converter according to any of claims 1 to 7.
9. A frequency converter, characterized by: comprising the heat exchanger of claim 8.
10. A method for automatic temperature adjustment of a frequency converter according to claim 9, characterized in that: the method comprises the following steps:
s1: the temperature monitoring circuit monitors the working temperature of the frequency converter and transmits the real-time temperature condition to the control system;
s2: the control system analyzes the real-time temperature condition and controls the opening of the electronic expansion valve and the refrigerant flow of the refrigerant system to control the heat exchange effect of the heat exchanger according to the condition, thereby realizing the function of automatically adjusting the temperature of the frequency converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911104448.7A CN111010846B (en) | 2019-11-13 | 2019-11-13 | Heat exchanger substrate of plate-type frequency converter, heat exchanger, frequency converter and automatic temperature adjusting method of frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911104448.7A CN111010846B (en) | 2019-11-13 | 2019-11-13 | Heat exchanger substrate of plate-type frequency converter, heat exchanger, frequency converter and automatic temperature adjusting method of frequency converter |
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| CN111010846A true CN111010846A (en) | 2020-04-14 |
| CN111010846B CN111010846B (en) | 2021-01-29 |
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Cited By (3)
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| CN111629572A (en) * | 2020-07-03 | 2020-09-04 | 中国电子科技集团公司第十四研究所 | Self-adaptive flow adjusting method and device for liquid cooling cold plate of electronic equipment |
| CN112506254A (en) * | 2021-02-05 | 2021-03-16 | 天津飞旋科技有限公司 | Cold plate temperature control method and device, electronic equipment and computer readable medium |
| CN114543557A (en) * | 2022-02-24 | 2022-05-27 | 广东美的暖通设备有限公司 | Flow path connection module, heat exchanger and refrigeration equipment |
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| CN114543557A (en) * | 2022-02-24 | 2022-05-27 | 广东美的暖通设备有限公司 | Flow path connection module, heat exchanger and refrigeration equipment |
| CN114543557B (en) * | 2022-02-24 | 2024-05-28 | 广东美的暖通设备有限公司 | Flow path connection module, heat exchanger, and refrigeration device |
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| CN111010846B (en) | 2021-01-29 |
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