CN220415536U - Crankcase heat radiation structure - Google Patents
Crankcase heat radiation structure Download PDFInfo
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- CN220415536U CN220415536U CN202321803070.1U CN202321803070U CN220415536U CN 220415536 U CN220415536 U CN 220415536U CN 202321803070 U CN202321803070 U CN 202321803070U CN 220415536 U CN220415536 U CN 220415536U
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Abstract
The utility model relates to the technical field of crank cases and discloses a crank case radiating structure which comprises a crank case main body, wherein a radiating box is arranged on one side of the crank case main body, a heat exchange assembly is arranged above the radiating box, the radiating assembly is arranged in the radiating box, a refrigerating cavity is formed on one side of the radiating box, and a refrigerating sheet is arranged in the refrigerating cavity. The heat exchange assembly is arranged, so that heat generated by the operation of a piston in the crankcase main body is conveniently absorbed, the temperature in the crankcase main body is conveniently subjected to heat exchange by using the cooling liquid, the crankcase main body is better facilitated to radiate heat, the water pump is started, the cooling liquid is conveyed into the cooling cavities formed in the upper box body and the lower box body of the cooling box by using the water pump, the cooling liquid is positioned in the cooling cavity to absorb the heat of the cooling box, and then the cooling liquid absorbing the heat is discharged through the other end of the cooling cavity, so that the cooling box is radiated.
Description
Technical Field
The utility model relates to the technical field of crank cases, in particular to a crank case heat dissipation structure.
Background
The crankcase is a part of the lower part of the cylinder block for installing a crankshaft, the crankcase is divided into an upper crankcase and a lower crankcase, the upper crankcase and the cylinder block are cast into a whole, and the lower crankcase is used for storing lubricating oil and sealing the upper crankcase, so the crankcase is also called an oil pan diagram; the oil pan is very stressed and is generally stamped by a thin steel plate, and the shape of the oil pan depends on the overall arrangement of the engine and the capacity of engine oil; an oil stabilizing baffle is arranged in the oil pan to prevent the oil level from fluctuating too much during the running of the automobile, an oil drain screw plug is also arranged at the bottom of the oil pan, and a permanent magnet is arranged on the oil drain screw plug to adsorb metal scraps in lubricating oil and reduce the abrasion of an engine; gaskets are provided between the upper and lower crankcase interfaces to prevent leakage of lubricant.
And in the working process of the air cylinder in the crankcase, a large amount of geothermal energy can be generated in the crankcase, so that the service life of the crankcase is further prolonged, the geothermal energy in the crankcase is required to be radiated, and a radiating structure is required to be utilized in the radiating process of the crankcase.
Chinese patent publication No.: the utility model discloses a heat radiation structure for on crankcase body, which comprises a box body, and the both sides of box upper end all are provided with the air chamber shell cover, all be provided with on the air chamber shell cover rather than linking firmly and have the assembly shell of cavity, all be provided with on the assembly shell rather than linking firmly and be used for strengthening the radiating effect's radiator unit, radiator unit comprises a plurality of unit of blowing, with the same air-supply line of unit quantity of blowing and play tuber pipe, the both ends of air-supply line are connected with unit and assembly shell respectively, and make the unit of blowing be linked together with the cavity in the assembly shell, the one end of play tuber pipe is connected with above-mentioned assembly shell, and the other end of play tuber pipe is provided with the scattered stream unit with the air current dispersion and improvement surface radiating effect.
The utility model provides a heat dissipation device, including box, air chamber shell cover, the assembly shell that links firmly rather than being provided with and have the cavity is all provided with on the assembly shell, all be provided with rather than linking firmly and be used for strengthening the radiating component of radiating effect, radiating component comprises a plurality of unit of blowing, with the same air-supply line of unit quantity and play tuber pipe of blowing, the both ends of air-supply line are connected with unit and assembly shell respectively, and make the unit of blowing be linked together with the cavity in the assembly shell, the one end of play tuber pipe is connected with above-mentioned assembly shell, and the other end of play tuber pipe is provided with the scattered unit that just improves the surface radiating effect with the air current, but current the device is in the radiating process to the crankcase only rely on air and bent axle surface to make the crankcase steadily reduce, adopt to flow and carry out the heat exchange between the crankcase ground inefficiency, thereby be unfavorable for producing the geothermal heat to the crankcase.
Disclosure of Invention
The utility model aims to provide a crankcase heat radiation structure, which solves the problem that the crankcase heat radiation efficiency is low by utilizing air flow in the background art.
In order to solve the technical problems, the utility model provides the following technical scheme: the crankcase heat radiation structure comprises a crankcase main body, wherein a heat radiation box is arranged on one side of the crankcase main body, a heat exchange assembly is arranged above the heat radiation box, a heat radiation assembly is arranged inside the heat radiation box, a refrigerating cavity is formed on one side of the heat radiation box, and a refrigerating sheet is arranged inside the refrigerating cavity;
the heat exchange assembly comprises a water pump, the water discharge end of the water pump is connected with a cooling liquid conveying main pipeline, one side of the cooling liquid conveying main pipeline is connected with a cooling liquid conveying branch pipeline, a cooling cavity is formed in the crankcase main body, one end of the cooling cavity is connected with a cooling liquid discharge branch pipeline, one side of the cooling liquid discharge branch pipeline is provided with a cooling liquid discharge main pipeline, and the water pumping end of the water pump is connected with an even water pumping pipeline;
the heat radiation assembly comprises a heat radiation pipeline, a first ventilation opening is formed in one side of the heat radiation box, a mounting frame is arranged in the first ventilation opening, a fan is arranged on one side of the mounting frame, a filter screen is arranged at the end part of the first ventilation opening, a second ventilation opening is formed in the end part of the heat radiation box, and heat radiation fins are arranged on the outer side of the heat radiation pipeline.
Preferably, the water pump is detachably connected with the heat dissipation box, the cooling liquid conveying main pipeline is communicated with the water draining end of the water pump, the number of the cooling liquid conveying branch pipelines is two, and the two cooling liquid conveying branch pipelines are respectively communicated with the cooling cavity formed in the heat dissipation box.
Preferably, one end of the cooling cavity far away from the cooling liquid conveying branch pipeline is communicated with the cooling liquid discharging branch pipeline, the number of the cooling liquid discharging branch pipelines is two, and the two groups of the cooling liquid discharging branch pipelines are communicated with the cooling liquid discharging main pipeline.
Preferably, the cooling liquid discharging main pipeline penetrates through the heat dissipation box and extends to the inside of the heat dissipation box, the cooling liquid discharging main pipeline is communicated with the heat dissipation pipeline, the heat dissipation pipeline is of a bent S-shaped structure, and the heat dissipation pipeline is made of brass.
Preferably, the heat dissipation pipeline is located inside the heat dissipation box and fixedly arranged, the heat dissipation pipeline is fixedly connected with the heat dissipation fins, and one end, away from the cooling liquid discharge main pipeline, of the heat dissipation pipeline is communicated with the refrigerating cavity.
Preferably, the mounting frame is fixedly connected with the first ventilation opening, the fan is detachably connected with the mounting frame, and the filter screen is positioned at the end part of the first ventilation opening and is fixed in a detachable mode.
Preferably, the second air vent is located at the other end of the heat dissipation box, and the first air vent and the second air vent penetrate through the heat dissipation box.
Preferably, a partition plate is arranged in the heat dissipation box, a refrigerating cavity is formed by the partition plate and the side wall of the heat dissipation box, and the water pumping pipeline penetrates through the heat dissipation box and extends to the bottom of the refrigerating cavity.
Compared with the prior art, the utility model has the following beneficial effects:
the heat exchange assembly is arranged, so that heat generated by the operation of a piston in the crankcase main body is conveniently absorbed, the temperature in the crankcase main body is subjected to heat exchange by using cooling liquid, the heat exchange efficiency is improved, the crankcase main body is better facilitated to radiate heat, the water pump is started, the cooling liquid is conveyed to the cooling cavity formed in the upper box body and the lower box body of the cooling box by using the water pump, the cooling liquid is enabled to be positioned in the cooling cavity to absorb the heat of the cooling box, and then the cooling liquid absorbing the heat is discharged through the other end of the cooling cavity, so that the cooling box is radiated.
The cooling device has the advantages that the cooling liquid absorbing heat is cooled through the heat dissipation assembly, so that the cooling liquid can flow into the refrigerating cavity after the temperature of the cooling liquid is reduced, the refrigerating time of the cooling sheet for refrigerating the cooling liquid can be shortened, the working efficiency of the device is improved, the loss of resources is reduced, the air flow speed in the heat dissipation box can be increased by using the fan, the heat exchange rate of the heat dissipation fin arranged on the outer side of the heat dissipation pipeline and the air is improved, and the cooling speed of the cooling liquid is improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a cross-sectional view of a crankcase body of the utility model;
FIG. 3 is a cross-sectional view of the heat dissipating box of the present utility model;
fig. 4 is a schematic diagram of a connection structure between a heat dissipating pipe and a heat dissipating fin according to the present utility model.
In the figure: 1. a crankcase body; 2. a heat radiation box; 3. a heat exchange assembly; 301. a water pump; 302. a coolant delivery main line; 303. a cooling liquid delivery branch pipe; 304. a cooling chamber; 305. a coolant discharge branch pipe; 306. the cooling liquid is discharged out of the main pipeline; 307. a water pumping pipeline; 4. a heat dissipation assembly; 401. a heat dissipation pipe; 402. a first vent; 403. a mounting frame; 404. a blower; 405. a filter screen; 406. a second vent; 407. a heat dissipating fin; 5. a refrigerating chamber; 6. a refrigerating sheet.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-4, a crankcase heat dissipation structure includes a crankcase main body 1, a heat dissipation box 2 is arranged at one side of the crankcase main body 1, a heat exchange component 3 is installed above the heat dissipation box 2, a heat dissipation component 4 is arranged inside the heat dissipation box 2, a refrigeration cavity 5 is formed at one side of the heat dissipation box 2, and a refrigeration sheet 6 is arranged inside the refrigeration cavity 5; the heat exchange assembly 3 comprises a water pump 301, wherein a water discharge end of the water pump 301 is connected with a cooling liquid conveying main pipeline 302, one side of the cooling liquid conveying main pipeline 302 is connected with a cooling liquid conveying branch pipeline 303, a cooling cavity 304 is formed in the crankcase main body 1, one end of the cooling cavity 304 is connected with a cooling liquid discharge branch pipeline 305, one side of the cooling liquid discharge branch pipeline 305 is provided with a cooling liquid discharge main pipeline 306, and a pumping end of the water pump 301 is connected with a coupling pumping pipeline 307; the heat dissipation assembly 4 comprises a heat dissipation pipeline 401, a first ventilation opening 402 is formed in one side of the heat dissipation box 2, a mounting frame 403 is arranged in the first ventilation opening 402, a fan 404 is arranged on one side of the mounting frame 403, a filter screen 405 is arranged at the end part of the first ventilation opening 402, a second ventilation opening 406 is formed in the end part of the heat dissipation box 2, and heat dissipation fins 407 are arranged on the outer side of the heat dissipation pipeline 401.
Through the technical scheme, the heat exchange assembly 3 is arranged, so that heat generated by the operation of a piston in the crankcase main body 1 is conveniently absorbed, the temperature in the crankcase main body 1 is subjected to heat exchange by using cooling liquid, the heat exchange efficiency is improved, the crankcase main body 1 is better facilitated to dissipate heat, the water pump 301 is started, the cooling liquid is conveyed to the cooling cavity 304 formed in the upper box body and the lower box body of the cooling box 2 by using the water pump 301, the cooling liquid is enabled to absorb the heat of the cooling box 2 in the cooling cavity 304, and then the cooling liquid absorbing the heat is discharged through the other end of the cooling cavity 304, so that the cooling box 2 is enabled to dissipate heat; meanwhile, through the heat dissipation assembly 4, the cooling liquid absorbing heat is cooled, so that after the temperature of the cooling liquid is reduced, the cooling liquid flows into the refrigerating cavity 5, the refrigerating time of the cooling liquid by the refrigerating sheet 6 can be shortened, the working efficiency of the device is improved, the loss of resources is reduced, the air flow speed in the heat dissipation box 2 can be increased by the fan 404, the heat exchange rate of the heat dissipation fins 407 and the air is improved, and the cooling speed of the cooling liquid is improved.
Specifically, the water pump 301 is detachably connected with the heat dissipation box 2, the cooling liquid conveying main pipeline 302 is communicated with the water draining end of the water pump 301, the number of the cooling liquid conveying branch pipelines 303 is two, and the two groups of cooling liquid conveying branch pipelines 303 are respectively communicated with the cooling cavity 304 formed in the heat dissipation box 2.
Through the above technical scheme, the water pump 301 is an existing device, and will not be described in detail herein, and the water pump 301 is detachably fixed above the heat dissipation box 2, the water pump 301 is communicated with the cooling liquid conveying main pipeline 302, and the cooling liquid conveying main pipeline 302 is connected with the cooling liquid conveying branch pipeline 303 through a three-way pipe, so that the water pump 301 can convey the cooling liquid located inside the cooling liquid conveying main pipeline 302 to the upper box and the lower box of the crankcase main body 1.
Specifically, one end of the cooling cavity 304, which is far away from the cooling liquid conveying branch pipeline 303, is communicated with the cooling liquid discharging branch pipeline 305, the number of the cooling liquid discharging branch pipelines 305 is two, and the two groups of cooling liquid discharging branch pipelines 305 are communicated with the cooling liquid discharging main pipeline 306.
Through the above technical scheme, the cooling cavity 304 is located the inside S type pipeline of buckling of seting up of crankcase main part 1, and the pipeline is located the inside setting of crankcase main part 1, and the heat that is located the inside work of crankcase main part 1 that can be better produced, and the coolant liquid gets into the cooling cavity 304 inside through coolant liquid delivery branch road pipeline 303, and the back absorbs heat and discharges through coolant liquid discharge branch road pipeline 305 after, makes the coolant liquid flow to coolant liquid discharge main road pipeline 306 inside.
Specifically, the cooling liquid discharging main pipe 306 penetrates the heat dissipating box 2 and extends to the inside thereof, and the cooling liquid discharging main pipe 306 is communicated with the heat dissipating pipe 401, the heat dissipating pipe 401 has a bent S-shaped structure, and the heat dissipating pipe 401 is made of brass.
Through the above technical scheme, the heat dissipation pipeline 401 is of a bent structure, so that the cooling liquid can be guaranteed to stay in the heat dissipation pipeline 401 for a long time, and therefore the cooling liquid can exchange heat with the heat dissipation pipeline 401, the temperature of the cooling liquid is conducted to the outer side of the heat dissipation pipeline 401, and then the temperature of the cooling liquid is conducted to the outer side of the heat dissipation fin 407, so that heat exchange between the air of the heat dissipation pipeline 401 is quickened, and the cooling efficiency of the cooling liquid is improved.
Specifically, the heat dissipation pipe 401 is fixedly disposed inside the heat dissipation box 2, and the heat dissipation pipe 401 is fixedly connected with the heat dissipation fin 407, and one end of the heat dissipation pipe 401, which is far away from the cooling liquid discharging main pipe 306, is communicated with the refrigerating cavity 5.
Through above-mentioned technical scheme, utilize the radiating pipe 401 that sets up to lie in the inside fixed setting of radiating box 2, can guarantee the stable form of structure, radiating pipe 401 is linked together with refrigeration chamber 5 simultaneously, makes through preliminary refrigerated coolant liquid can enter into the refrigeration chamber 5 inside, carries out refrigeration treatment to reduce the energy that refrigeration piece 6 consumed.
Specifically, the mounting bracket 403 is fixedly connected with the first ventilation opening 402, the fan 404 is detachably connected with the mounting bracket 403, and the filter screen 405 is located at an end of the first ventilation opening 402 and is fixed in a detachable manner.
Through the above technical scheme, the mounting bracket 403 that sets up is convenient for support fan 404, and fan 404 can accelerate the air flow speed that is located the heat dissipation case 2 inside, further improves the heat exchange efficiency between fin 407 and the air, sets up to obtain that filter screen 405 can effectually prevent that the dust from entering into the heat dissipation case 2 inside, causes the influence to the operational environment of fan 404.
Specifically, the second air vent 406 is located at the other end of the heat dissipation case 2, and the first air vent 402 and the second air vent 406 penetrate through the heat dissipation case 2.
Through the above technical scheme, the second air vent 406 and the first air vent 402 are mutually matched, so that air convection can be formed inside the heat dissipation box 2, air can enter through the second air vent 406, and then air absorbing heat is discharged through the first air vent 402 under the action of the fan 404.
Specifically, a partition plate is disposed inside the heat dissipation case 2, and forms a refrigerating cavity 5 with the side wall of the heat dissipation case 2, and the water pumping pipe 307 penetrates through the heat dissipation case 2 and extends to the bottom of the refrigerating cavity 5.
Through the above technical scheme, the refrigerating sheet 6 is an existing device, and will not be described in detail herein, and the water pumping pipe 307 extends to the bottom of the refrigerating cavity 5, so that the cooling liquid in the refrigerating cavity 5 is conveniently pumped, and then the cooling liquid is conveyed to the cooling cavity 304 through the water pump 301 to absorb heat.
When the crankcase main body 1 is in use, when a piston in the crankcase main body 1 does work to release a large amount of heat, the water pump 301 is started, the water pump 301 conveys the cooling liquid arranged in the refrigerating cavity 5 to the inside of the cooling liquid conveying main pipeline 302 by using the water pumping pipeline 307, then the cooling liquid enters the cooling cavity 304 through the cooling liquid conveying branch pipeline 303 communicated with the cooling liquid conveying main pipeline 302, enters the upper box body and the lower box body structure of the crankcase main body 1, the rear cooling liquid absorbs the heat in the cooling box 2, the cooling liquid absorbing the heat flows to the inside of the cooling liquid discharging branch pipeline 305 through the other end of the cooling cavity 304, the rear cooling liquid flows to the inside of the cooling liquid discharging main pipeline 306 through the cooling liquid discharging branch pipeline 305, then the cooling liquid enters the inside of the cooling pipeline 401, the rear starting fan 404 drives the air in the cooling box 2 to flow rapidly, and the air contacts with the surface of the cooling pipeline 401, so that the heat exchange efficiency between the cooling pipeline 401 and the air is improved, the cooling liquid arranged in the first cooling liquid is cooled down, the cooling liquid in the cooling box 401 is cooled down, the cooling liquid enters the cooling liquid in the cooling cavity 5 through the cooling liquid discharging branch pipeline 305, the cooling liquid is cooled down to the inside of the crankcase main body 5, and the cooling liquid is cooled down after the cooling liquid is cooled down, the cooling liquid is cooled down in the crankcase main body 5 is cooled down, and the cooling liquid is cooled down conveniently, and the cooling liquid is cooled down by the cooling liquid is circulated in the crankcase main body 1.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit thereof, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A crankcase heat radiation structure, including crankcase main body (1), its characterized in that: a heat dissipation box (2) is arranged on one side of the crankcase main body (1), a heat exchange assembly (3) is arranged above the heat dissipation box (2), a heat dissipation assembly (4) is arranged inside the heat dissipation box (2), a refrigerating cavity (5) is formed on one side of the heat dissipation box (2), and a refrigerating sheet (6) is arranged inside the refrigerating cavity (5);
the heat exchange assembly (3) comprises a water pump (301), a water discharge end of the water pump (301) is connected with a cooling liquid conveying main pipeline (302), one side of the cooling liquid conveying main pipeline (302) is connected with a cooling liquid conveying branch pipeline (303), a cooling cavity (304) is formed in the crankcase main body (1), one end of the cooling cavity (304) is connected with a cooling liquid discharging branch pipeline (305), one side of the cooling liquid discharging branch pipeline (305) is provided with a cooling liquid discharging main pipeline (306), and a water pumping end of the water pump (301) is connected with an even water pumping pipeline (307);
the heat dissipation assembly (4) comprises a heat dissipation pipeline (401), a first ventilation opening (402) is formed in one side of the heat dissipation box (2), a mounting frame (403) is arranged in the first ventilation opening (402), a fan (404) is arranged on one side of the mounting frame (403), a filter screen (405) is arranged at the end part of the first ventilation opening (402), a second ventilation opening (406) is formed in the end part of the heat dissipation box (2), and a heat dissipation fin (407) is arranged on the outer side of the heat dissipation pipeline (401).
2. A crankcase heat dissipation structure as defined in claim 1, wherein: the cooling liquid conveying main pipeline (302) is communicated with the water draining end of the water pump (301), the number of the cooling liquid conveying branch pipelines (303) is two, and the two cooling liquid conveying branch pipelines (303) are respectively communicated with a cooling cavity (304) formed in the cooling box (2).
3. A crankcase heat dissipation structure as defined in claim 1, wherein: one end of the cooling cavity (304) far away from the cooling liquid conveying branch pipeline (303) is communicated with the cooling liquid discharging branch pipeline (305), the number of the cooling liquid discharging branch pipelines (305) is two, and the two groups of the cooling liquid discharging branch pipelines (305) are communicated with the cooling liquid discharging main pipeline (306).
4. A crankcase heat dissipation structure as defined in claim 1, wherein: the cooling liquid discharging main pipeline (306) penetrates through the cooling box (2) and extends to the inside of the cooling box, the cooling liquid discharging main pipeline (306) is communicated with the cooling pipeline (401), the cooling pipeline (401) is of a bent S-shaped structure, and the cooling pipeline (401) is made of brass.
5. A crankcase heat dissipation structure as defined in claim 1, wherein: the heat dissipation pipeline (401) is fixedly arranged in the heat dissipation box (2), the heat dissipation pipeline (401) is fixedly connected with the heat dissipation fins (407), and one end, away from the cooling liquid discharge main pipeline (306), of the heat dissipation pipeline (401) is communicated with the refrigerating cavity (5).
6. A crankcase heat dissipation structure as defined in claim 1, wherein: the fan is characterized in that the mounting frame (403) is fixedly connected with the first ventilation opening (402), the fan (404) is detachably connected with the mounting frame (403), and the filter screen (405) is positioned at the end part of the first ventilation opening (402) and is fixed in a detachable mode.
7. A crankcase heat dissipation structure as defined in claim 1, wherein: the second air vent (406) is positioned at the other end of the heat dissipation box (2), and the first air vent (402) and the second air vent (406) are communicated with the heat dissipation box (2).
8. A crankcase heat dissipation structure as defined in claim 1, wherein: the cooling box (2) is internally provided with a baffle, the baffle and the side wall of the cooling box (2) form a refrigerating cavity (5), and the water pumping pipeline (307) penetrates through the cooling box (2) and extends to the bottom of the refrigerating cavity (5) thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321803070.1U CN220415536U (en) | 2023-07-10 | 2023-07-10 | Crankcase heat radiation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321803070.1U CN220415536U (en) | 2023-07-10 | 2023-07-10 | Crankcase heat radiation structure |
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| Publication Number | Publication Date |
|---|---|
| CN220415536U true CN220415536U (en) | 2024-01-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321803070.1U Active CN220415536U (en) | 2023-07-10 | 2023-07-10 | Crankcase heat radiation structure |
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| CN (1) | CN220415536U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120010579A (en) * | 2024-12-25 | 2025-05-16 | 北京京仪自动化装备技术股份有限公司 | A temperature control device and a temperature control method using Peltier compensation temperature control |
-
2023
- 2023-07-10 CN CN202321803070.1U patent/CN220415536U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120010579A (en) * | 2024-12-25 | 2025-05-16 | 北京京仪自动化装备技术股份有限公司 | A temperature control device and a temperature control method using Peltier compensation temperature control |
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