CN116163899A - Cooling device and cooling method based on semiconductor refrigeration technology - Google Patents
Cooling device and cooling method based on semiconductor refrigeration technology Download PDFInfo
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- CN116163899A CN116163899A CN202211098634.6A CN202211098634A CN116163899A CN 116163899 A CN116163899 A CN 116163899A CN 202211098634 A CN202211098634 A CN 202211098634A CN 116163899 A CN116163899 A CN 116163899A
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- semiconductor refrigeration
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
- F03D80/60—Cooling or heating of wind motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B21/00—Machines, plants or systems, using electric or magnetic effects
- F25B21/02—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2321/00—Details of machines, plants or systems, using electric or magnetic effects
- F25B2321/02—Details of machines, plants or systems, using electric or magnetic effects using Peltier effects; using Nernst-Ettinghausen effects
- F25B2321/021—Control thereof
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
The invention relates to the technical field of wind power generation, and discloses a cooling device based on a semiconductor refrigeration technology, wherein the cooling device is arranged in a hub of a wind turbine, and comprises: a controller; the semiconductor refrigerating device is formed by connecting two semiconductors in series, and the semiconductor refrigerating sheet is connected to a power supply of a hub of the wind turbine through a fuse and a relay; the temperature sensor is arranged in the hub of the wind turbine generator, and is used for detecting the temperature of equipment in the hub of the wind turbine generator in real time and sending temperature data to the controller; the high-temperature alarm device is arranged in the hub of the wind turbine generator, and when receiving the high-temperature alarm signal, the controller sends out an instruction for controlling the on-off of the relay so as to realize the start and stop of the semiconductor refrigeration device. The semiconductor refrigerating device is formed by connecting two semiconductors in series, is small in size and light in weight, is convenient to install, does not have larger influence even if the wind turbine generator is in a rotating running state, does not need high-strength fixation, and reduces the implementation difficulty.
Description
Technical Field
The invention relates to the technical field of wind power generation, in particular to a cooling device and a cooling method for equipment in a hub of a wind turbine generator based on a semiconductor refrigeration technology.
Background
Wind energy is widely focused as pollution-free renewable energy sources, and rapidly develops, so that wind power generation in China has wide development prospect, and in recent years, generator sets are subjected to rapid development from tens of kilowatts to hundreds of kilowatts to megawatts, and the functional requirements of high-power wind power generator sets on a pitch system are higher.
The Hua Rui MW wind turbine generator hub is internally provided with 3 independent variable pitch control systems, when the wind turbine generator is normally operated, electric equipment in the hub continuously heats for a long time, and air circulation in the hub is poor, so that electric control equipment of the wind turbine generator is operated in an overheat environment for a long time, common equipment can be operated barely, but internal precise instruments such as a variable pitch frequency converter and the like are easy to be blocked or indirectly cause other faults when in operation, so that the availability of the wind turbine generator is reduced, especially Wen Shiqi is more serious in summer, 70 ℃ is alarmed, but due to poor air circulation, even if the wind turbine generator is shut down, the wind turbine generator cannot be rapidly cooled, so that the availability of the wind turbine generator is reduced, and the variable pitch frequency converter is easy to damage.
In order to reduce the influence of temperature on the unit, the prior art installs a plurality of air blowers in the hub of the wind turbine generator set so as to accelerate the air flow velocity in the hub to dissipate heat through the operation of the air blowers, but because the hub is in a rotating state when the wind turbine generator set is operated, equipment in the hub is easy to damage in the process, the replacement period of parts is shortened, and further the operation cost is improved.
Therefore, how to provide a device for cooling equipment in a hub of a wind turbine generator is a problem that needs to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the invention provides a cooling device and a cooling method based on a semiconductor refrigeration technology, so as to solve the technical problems that electrical equipment in a hub cannot be cooled down rapidly in a overheat environment for a long time, equipment is easy to damage due to cooling of a blower, and operation cost is increased.
In order to solve the technical problems, the invention adopts the following technical scheme:
a cooling device based on a semiconductor refrigeration technology is arranged in a hub of a wind turbine generator, and comprises a controller, a semiconductor refrigeration device, a temperature sensor and a high-temperature alarm device:
the semiconductor refrigerating device is formed by connecting two semiconductors in series, and the semiconductor refrigerating sheet is connected to a power supply of a hub of the wind turbine generator through a fuse and a relay; the temperature sensor is arranged in the hub of the wind turbine generator, and is used for detecting the temperature of equipment in the hub of the wind turbine generator in real time and sending temperature data to the controller; the high-temperature alarm device is arranged in the hub of the wind turbine generator, and when the high-temperature alarm signal is received, the controller sends out an instruction for controlling the on-off of the relay so as to realize the start and stop of the semiconductor refrigeration device.
Preferably, the cooling device based on the semiconductor refrigeration technology further comprises a constant temperature controller which is arranged on the semiconductor refrigeration device so that condensed water is not generated on the surface of the semiconductor refrigeration device.
Preferably, in the cooling device based on the semiconductor refrigeration technology, the cooling device further comprises a heat dissipation device, and the heat dissipation devices are arranged on two sides of the semiconductor refrigeration device.
Preferably, in the cooling device based on the semiconductor refrigeration technology, the heat dissipation device comprises heat dissipation fins, and the heat dissipation fins are installed on two sides of the semiconductor refrigeration device and are used for cooling the semiconductor refrigeration device.
Preferably, in the cooling device based on the semiconductor refrigeration technology, the cooling device further comprises a cooling fan, and the cooling fan is installed on the outer side of the cooling fin and is used for cooling the cooling fin and the equipment in the hub of the wind turbine.
The invention also discloses a wind turbine generator hub, wherein a variable-pitch control cabinet is arranged in the wind turbine generator hub, and a cooling device based on a semiconductor refrigeration technology is arranged at a position, close to a variable-pitch frequency converter, in the variable-pitch control cabinet.
The invention also discloses a cooling method based on the semiconductor refrigeration technology, which is realized by adopting the cooling device and comprises the following steps:
acquiring the temperature of equipment in a hub of the wind turbine generator, and sending temperature data to a controller;
comparing the acquired temperature data with preset temperature, and when the acquired temperature data is higher than the maximum preset temperature, controlling the high-temperature alarm device to send out an alarm signal by the controller, and simultaneously, sending out an instruction for controlling the on-off of the relay by the controller so as to control the semiconductor refrigeration device to start to operate.
Preferably, in the cooling device based on the semiconductor refrigeration technology, the cooling device further includes: when the acquired temperature data is lower than the minimum preset temperature, the controller sends out an instruction for controlling the on-off of the relay, and then the semiconductor refrigeration device is controlled to stop running.
Preferably, in the cooling device based on the semiconductor refrigeration technology, the maximum preset temperature is 65 ℃, and the minimum preset temperature is 45 ℃.
Preferably, in the above cooling device based on semiconductor refrigeration technology, the temperature of the equipment in the hub of the obtained wind turbine is: and acquiring the temperature of a variable-pitch frequency converter in the hub variable-pitch control cabinet of the wind turbine.
The invention provides a cooling device and a cooling method based on a semiconductor refrigeration technology, which has the beneficial effects that compared with the prior art:
the semiconductor refrigerating device is formed by connecting two semiconductors in series, has small volume and light weight, is convenient to install, does not have larger influence even if the wind turbine is in a rotary running state, does not need high-strength fixation, and reduces the implementation difficulty;
the semiconductor refrigerating device adopts direct current for power supply, is consistent with the power supply of equipment in the hub of the wind turbine generator, and does not need to be provided with a direct current power supply;
the semiconductor refrigerating device is in a standby non-working state at ordinary times, has good refrigerating effect when refrigerating in a small range, can ensure that the running temperature of the variable-pitch frequency converter in the variable-pitch control cabinet is lower by the equipment in the hub of the wind turbine generator site, and can cool when the variable-pitch frequency converter alarms at high temperature, at the moment, the core equipment is rapidly cooled, and the utilization rate of the wind turbine generator is improved.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the accompanying drawings
FIG. 1 is a schematic diagram of a semiconductor refrigeration technology cooling device according to the present invention;
FIG. 2 is a schematic diagram of a part of the structure of a wind turbine generator according to the present invention;
FIG. 3 is a schematic structural view of a wind turbine hub according to the present invention;
FIG. 4 is a block diagram of a semiconductor refrigeration technology cooling device according to the present invention;
fig. 5 is a schematic flow chart of a cooling method based on the semiconductor refrigeration technology.
In the drawing of the figure,
the semiconductor refrigerating device comprises a semiconductor refrigerating device 1, a radiating fin 2, a radiating fan 3, a hub 4, a guide cover 5, a rotating shaft 6, a variable-pitch control cabinet 7 and a constant-temperature controller 8.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
Example 1
As shown in fig. 1 and 4, the embodiment provides a cooling device based on a semiconductor refrigeration technology, the cooling device is installed in a hub of a wind turbine generator, and the cooling device comprises a controller, a semiconductor refrigeration device 1, a temperature sensor and a high-temperature alarm device.
In some embodiments of the present invention, the semiconductor refrigeration device 1 is formed by connecting two semiconductors in series, and the semiconductor refrigeration sheet is connected to a power supply of the wind turbine hub 4 through a fuse and a relay.
Specifically, a semiconductor refrigeration sheet TEC-12708 (about 15 yuan of single piece) with rated direct-current voltage of 12V is adopted, and two semiconductor refrigeration sheets are connected in series to form a semiconductor refrigeration device 1, and the semiconductor refrigeration device is connected to a power supply with 24V voltage of a hub 4 of a wind turbine generator through a fuse protector and a 24V relay;
when direct current flows through the semiconductor, one end of each PN junction absorbs heat and refrigerates, and the other end heats, at the moment, the refrigerating surface is directly close to or attached to a serious part of heat generation, and the temperature of the working environment of the equipment is directly reduced.
In some embodiments of the present invention, the temperature sensor is disposed in the wind turbine hub 4, and is used for detecting the temperature of equipment in the wind turbine hub 4 in real time, especially for detecting the temperature of a variable pitch frequency converter in the wind turbine hub 4 in real time, and sending the collected temperature data to the controller in real time.
In some embodiments of the invention, the high-temperature alarm device is arranged in the hub 4 of the wind turbine generator, and when the high-temperature alarm signal is received, the controller sends out an instruction for controlling the on-off of the relay so as to realize the start and stop of the semiconductor refrigeration device 1;
it can be understood that the equipment in the hub 4 of the wind turbine generator system only needs to ensure that the running temperature of the variable-pitch frequency converter in the variable-pitch control cabinet 7 is low, the high-temperature phenomenon of the variable-pitch frequency converter is generally that the alarm is stopped at 70 ℃ and the high-temperature alarm is not frequent, and the temperature of the variable-pitch frequency converter is controlled to be about 50 ℃ through a cooling device; when the temperature sensor detects that the temperature of the variable-pitch frequency converter is close to about 70 ℃, the controller controls the high-temperature warning device to send out a warning signal, and then the semiconductor refrigerating device 1 starts to work, so that the shutdown of the wind turbine is avoided, and the working efficiency is reduced.
In some embodiments of the present invention, the semiconductor refrigeration device further comprises a thermostatic controller 8, which is installed on the semiconductor refrigeration device 1, so that condensed water is not generated on the surface of the semiconductor refrigeration device 1;
it can be understood that the semiconductor refrigeration device 1 may have a large temperature difference during operation, and the constant temperature controller 8 is additionally arranged, so that the surface temperature of the semiconductor refrigeration device 1 is above 0 ℃ during operation, thereby avoiding the generation of condensed water and ensuring safe production.
In some embodiments of the present invention, the air conditioner further comprises heat dissipation devices, wherein the heat dissipation devices are installed at two sides of the semiconductor refrigeration device 1, so as to accelerate the refrigeration effect of the semiconductor refrigeration device 1, accelerate the air circulation, and simultaneously cool the variable-pitch control cabinet 7.
In some embodiments of the present invention, the heat dissipation device includes heat dissipation fins 2, and the heat dissipation fins 2 are installed on two sides of the semiconductor refrigeration device 1 for cooling the semiconductor refrigeration device 1.
In some embodiments of the present invention, the heat dissipating device further includes a heat dissipating fan 3, where the heat dissipating fan 3 is installed outside the heat dissipating fin 2 and is used for cooling the heat dissipating fin 2 and the devices in the wind turbine hub 4;
further, the cooling fan 3 includes blades, a rotating shaft and a generator, and the generator drives the rotating shaft to further drive the blades to rotate.
It should be noted that, in summer, the ambient temperature is very high originally, the hub 4 is often at 50 ℃ or even higher in daytime, the cooling purpose cannot be achieved by only using a fan to strengthen the air circulation, besides, the equipment in the pitch control cabinet 7 has more strict requirements on temperature except for the pitch frequency converter, other equipment only relates to a relay, a connecting wire and the like, the requirements on temperature are not high, and the working characteristics of a semiconductor refrigerating sheet which has poor refrigerating efficiency but good refrigerating effect in a small range are just combined.
Example 2
As shown in fig. 2-3, the embodiment of the invention discloses a hub of a wind turbine generator, a guide cover 5 is covered on the outer side of a hub 4, and the hub 4 is connected with a rotating shaft 6.
In some embodiments of the present invention, three pitch control cabinets 7 are disposed in the hub 4 of the wind turbine generator, the cooling device based on the semiconductor refrigeration technology of embodiment 1 is installed in any one of the pitch control cabinets 7, and the cooling device is installed at a position close to the pitch frequency converter.
The semiconductor refrigeration technology is applied to the wind turbine hub 4 to realize cooling, is simple and convenient, has small volume and light weight, and the required direct current power supply can be easily realized in the wind turbine pitch control cabinet 7 without additional power supply.
Example 3
As shown in fig. 5, the embodiment of the invention discloses a cooling method based on a semiconductor refrigeration technology, the cooling method is realized by adopting the cooling device of the embodiment 1, and the method comprises the following steps:
s1, acquiring the temperature of equipment in a hub of a wind turbine generator, and sending temperature data to a controller;
specifically, the temperature of the variable-pitch frequency converter in the variable-pitch control cabinet of the hub of the wind turbine generator is obtained in the step S1, and the obtained temperature data is sent to the controller.
And S2, comparing the acquired temperature data with a preset temperature, and determining whether the semiconductor refrigeration device starts to operate or not by the controller according to a comparison result.
In some embodiments of the present invention, when the obtained temperature data is higher than the maximum preset temperature, the controller controls the high temperature alarm device to send out an alarm signal, and simultaneously, the controller sends out an instruction for controlling the on-off of the relay, so as to control the semiconductor refrigeration device to start to operate.
In some embodiments of the present invention, when the obtained temperature data is lower than the minimum preset temperature, the controller sends an instruction for controlling the on-off of the relay, so as to control the semiconductor refrigeration device to stop running.
In some embodiments of the invention, the maximum preset temperature is 65 ℃ and the minimum preset temperature is 45 ℃.
It can be understood that the high temperature phenomenon of the pitch frequency converter is generally that the temperature is about 50 ℃ and the warning is stopped, and the temperature is about 50 ℃ and is the normal operation temperature, so that when the temperature of the pitch frequency converter is detected to be close to 70 ℃, the semiconductor refrigerating device is controlled to start to operate until the temperature is reduced to below 50 ℃, and the stopping caused by overhigh temperature is avoided.
In some embodiments of the present invention, the semiconductor refrigeration device starts to operate and the heat dissipation device also starts to operate so as to accelerate cooling and air circulation, and after the semiconductor refrigeration device stops operating, the heat dissipation device can continue to operate or stop after a period of time, so as to reduce the operating environment temperature of the equipment.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Finally, it should be noted that: the above embodiments are only for illustrating the technical aspects of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those of ordinary skill in the art that: modifications and equivalents may be made to the specific embodiments of the invention without departing from the spirit and scope of the invention, which is intended to be covered by the claims.
Claims (10)
1. Cooling device based on semiconductor refrigeration technique, cooling device installs in wind turbine generator system wheel hub, its characterized in that, cooling device includes:
a controller;
the semiconductor refrigerating device is formed by connecting two semiconductors in series, and the semiconductor refrigerating sheet is connected to a power supply of a hub of the wind turbine generator through a fuse and a relay;
the temperature sensor is arranged in the wind turbine generator hub and is used for detecting the temperature of equipment in the wind turbine generator hub in real time and sending temperature data to the controller;
the high-temperature alarm device is arranged in the hub of the wind turbine generator, and when receiving the high-temperature alarm signal, the controller sends out an instruction for controlling the on-off of the relay so as to realize the start and stop of the semiconductor refrigeration device.
2. The cooling device based on semiconductor refrigeration technology according to claim 1, further comprising a thermostatic control mounted on the semiconductor refrigeration device so that condensed water is not generated on a surface of the semiconductor refrigeration device.
3. The cooling device based on the semiconductor refrigeration technology according to claim 1, further comprising a heat dissipation device installed at both sides of the semiconductor refrigeration device.
4. A cooling device based on semiconductor refrigeration technology as claimed in claim 3, wherein said heat dissipation device comprises
And the radiating fins are arranged on two sides of the semiconductor refrigerating device and are used for cooling the semiconductor refrigerating device.
5. The cooling device based on semiconductor refrigeration technology as recited in claim 4, wherein the heat sink further comprises
And the cooling fan is arranged on the outer side of the cooling fin and used for cooling the cooling fin and the equipment in the hub of the wind turbine.
6. A wind turbine hub, characterized in that a pitch control cabinet is arranged in the wind turbine hub, and the cooling device based on the semiconductor refrigeration technology according to any one of claims 1-5 is arranged at a position in the pitch control cabinet, which is close to a pitch frequency converter.
7. A cooling method based on a semiconductor refrigeration technology, characterized in that the cooling method is realized by adopting the cooling device as claimed in any one of claims 1 to 5, and the method comprises the following steps:
acquiring the temperature of equipment in a hub of the wind turbine generator, and sending temperature data to a controller;
comparing the acquired temperature data with preset temperature, and when the acquired temperature data is higher than the maximum preset temperature, controlling the high-temperature alarm device to send out an alarm signal by the controller, and simultaneously, sending out an instruction for controlling the on-off of the relay by the controller so as to control the semiconductor refrigeration device to start to operate.
8. The semiconductor refrigeration technology based cooling device of claim 7, further comprising: when the acquired temperature data is lower than the minimum preset temperature, the controller sends out an instruction for controlling the on-off of the relay, and then the semiconductor refrigeration device is controlled to stop running.
9. The semiconductor refrigeration technology based cooling device of claim 8, wherein the maximum preset temperature is 65 ℃ and the minimum preset temperature is 45 ℃.
10. The cooling device based on the semiconductor refrigeration technology according to claim 7, wherein the temperature of the equipment in the hub of the obtained wind turbine is: and acquiring the temperature of a variable-pitch frequency converter in the hub variable-pitch control cabinet of the wind turbine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211098634.6A CN116163899A (en) | 2022-09-08 | 2022-09-08 | Cooling device and cooling method based on semiconductor refrigeration technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211098634.6A CN116163899A (en) | 2022-09-08 | 2022-09-08 | Cooling device and cooling method based on semiconductor refrigeration technology |
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| Publication Number | Publication Date |
|---|---|
| CN116163899A true CN116163899A (en) | 2023-05-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211098634.6A Pending CN116163899A (en) | 2022-09-08 | 2022-09-08 | Cooling device and cooling method based on semiconductor refrigeration technology |
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| CN (1) | CN116163899A (en) |
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- 2022-09-08 CN CN202211098634.6A patent/CN116163899A/en active Pending
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