CN104596162A - Condenser with built-in oil separator - Google Patents
Condenser with built-in oil separator Download PDFInfo
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- CN104596162A CN104596162A CN201510002674.XA CN201510002674A CN104596162A CN 104596162 A CN104596162 A CN 104596162A CN 201510002674 A CN201510002674 A CN 201510002674A CN 104596162 A CN104596162 A CN 104596162A
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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
- F25B39/00—Evaporators; Condensers
- F25B39/04—Condensers
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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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/02—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for separating lubricants from the refrigerant
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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
- F25B2339/00—Details of evaporators; Details of condensers
- F25B2339/04—Details of condensers
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Separating Particles In Gases By Inertia (AREA)
Abstract
The invention provides a condenser with a built-in oil separator. The condenser has the advantages that the structure is simple, the processing and manufacturing cost is low, and the like. The condenser with the built-in oil separator adopts a built-in oil separation assembly, the oil separator and the condenser are effectively and structurally integrated, a pressure container casing of one set of oil separator is omitted, the appearance dimension of an air conditioner refrigerating unit is greatly reduced, about 50 percent of welding processing workload is reduced, and possibly existing external leaking points of a system are further and greatly reduced. Through the adoption of a combined design of an air blocking plate and a third baffle plate, the flow rate of mixed gas entering the built-in oil separation assembly is effectively decelerated, so that the mixing gas is more uniform when passing through the filtering net plate group, the oil separation capability of the built-in oil separation assembly is effectively improved, meanwhile, a two-stage two-way filtering net oil separation structure is adopted, higher reliability is realized through being compared with that of a traditional built-in oil separator, and the oil separation efficiency can reach higher than 99.9 percent. Through the adoption of the designs of a convex separation plate, a fourth baffle plate and a fifth baffle plate, the heat exchange dead corner caused by the design of the built-in oil separator is greatly reduced. Compared with the traditional condenser with the built-in oil separator, the condenser provided by the embodiment of the invention has the advantages that the heat exchange efficiency is higher, and further, a higher energy efficiency ratio is obtained.
Description
Technical field
The present invention relates to the condenser adopted in a kind of refrigerated air-conditioning system, particularly relate to a kind of built-in oil eliminator formula condenser.
Background technology
The critical piece of refrigerated air-conditioning system is made up of refrigeration compressor, oil eliminator, condenser, expansion throttling device, evaporimeter and power control system.Wherein refrigeration oil mainly plays the effect of lubrication and cooling moving component in systems in which, when charging amount is certain, what refrigeration oil was more enters condenser and evaporimeter, not only can cause the possibility that oil supply system oil starvation increase compressor moving component oil starvation burns, and too much refrigeration oil can be attached on heat exchanger tube with filminess, the heat transfer effect of whole unit is caused not reach design point.Adopt the refrigerated air-conditioning system of flooded evaporator, refrigerant charge is more, and refrigeration oil and cold-producing medium, in the state of dissolving each other, more need higher refrigeration oil separating effect, so generally can select external oil eliminator, namely oil eliminator and evaporimeter, condenser are used in conjunction with each other.For whole refrigeration air-conditioning unit, pursue higher refrigeration oil separative efficiency and just mean the specification that will increase external oil eliminator, and then the appearance and size of refrigeration air-conditioning unit is increased, while needing larger installation and operation space, also result in the increase of refrigeration oil charging amount and equipment processing and manufacturing difficulty, the cost disadvantage that will certainly bring, makes product competitiveness in the market weaken.
Summary of the invention
For solving the problem, the invention provides a kind of compact appearance, oil-dividing efficiency is high, cost performance is high built-in oil eliminator formula condenser.
The technical solution used in the present invention is: a kind of built-in oil eliminator formula condenser, comprise: condenser cylindrical shell, tube sheet, condensing heat-exchanging pipe, oil collecting pipe group, drain pipe group, condenser cylindrical shell top is provided with air inlet pipe, condenser inside is fixed with built-in oil separation component, it is characterized in that: described built-in oil separation component comprises the first plate washer and second baffle that are arranged on both sides, air inlet pipe bottom, gas block panel is fixed with between first plate washer and the second plate washer, the first screen pack group is fixed with below gas block panel, condenser cylindrical shell axial direction tilts to be fixed with convex dividing plate, convex dividing plate two ends are fixed with fourth speed plate and fifth speed plate, convex dividing plate, first plate washer, second plate washer and first crosses the region formation first order oil piece-rate system that screen pack group is formed, third gear plate is fixed with between above convex dividing plate and below the first screen pack group, the second screen pack group is fixed with between first plate washer and fifth speed plate, the 3rd screen pack group is fixed with, first order oil piece-rate system both sides and fourth speed plate, the formation second level, region oil piece-rate system between fifth speed plate between second plate washer and fourth speed plate.
As preferably, surround shoe cream room below described third gear plate with convex dividing plate, condenser cylindrical shell, oil collecting pipe group is fixedly installed on both sides, shoe cream room bottom, and to stretch out condenser cylindrical shell outer and rotate 50 ° ~ 65 ° around condenser tubular axis.
As preferably, described convex dividing plate is provided with air-vent respectively between the air outlet slit place of the second stainless steel filtering net plate group and the 3rd stainless steel filtering net plate group and condenser cylindrical shell bottom.
As preferably, described gas block panel, third gear plate, the first stainless steel filter screen plate group, the second stainless steel filtering net plate and the 3rd stainless steel filtering net plate group be arranged in parallel, first stainless steel filtering net plate group thickness is 10mm ~ 30mm, and the second stainless steel filtering net plate and the 3rd stainless steel filtering net plate group thickness are 30mm ~ 50mm.
As preferably, described convex dividing plate angle of inclination in axial direction in condenser cylindrical shell is 30 ° ~ 45 °, and the length of convex dividing plate is 70% ~ 80% of condenser barrel lenght.
As preferably, described built-in oil eliminator formula condenser comprises the oil collecting pipe group that condenser cylindrical shell is arranged as refrigeration oil ejector.
The invention has the beneficial effects as follows: structure of the present invention is simple, and processing and manufacturing cost is low.Oil eliminator and condenser structurally integrate by the present invention, adopt built-in oily separation assembly, save the vessel shell of a set of oil eliminator, reduction air conditioner refrigerating unit appearance and size by a relatively large margin, reduce by the welding processing workload of about 50%, and then the outer leak source that a large amount of minimizing system may exist.The present invention adopts the Combination Design of gas block panel and third gear plate to effectively reduce to enter the flow velocity of built-in oily separation assembly mist, make mist during web plate group after filtration more even, effectively raise point oily ability of built-in oily separation assembly, the two-way filter screen of twin-stage is adopted to divide oily structure, have higher reliability relative to traditional built-in oil content, oil-dividing efficiency can reach more than 99.9%.By adopting convex dividing plate and fourth gear plate, the design of fifth gear plate significantly reduces the heat exchanging corner caused due to built-in oil content design, makes the present invention have higher heat exchange efficiency relative to conventional internal oil separating condenser, and then the Energy Efficiency Ratio that acquisition is higher.
Accompanying drawing explanation
Fig. 1 is the present invention's built-in oil eliminator formula condenser external structural representation;
Fig. 2 is that the built-in oil separation component axis of no-feathering of the present invention's built-in oil eliminator formula condenser measures intention;
Fig. 3 is the A-A generalized section shown in Fig. 1;
Fig. 4 is the B-B generalized section shown in Fig. 1.
In accompanying drawing, a flag member is expressed as follows meaning respectively:
1---air inlet pipe; 2---gas block panel; 3---first baffle plate; 31---second baffle; 4---first stainless steel filtering net plate group; 5---third gear plate; 6---refrigeration oil; 7---oil collecting pipe group; 8---convex dividing plate; 9---condensing heat-exchanging pipe group; 10---drain pipe group; 11---second stainless steel filtering net plate group; 101---the 3rd stainless steel filtering net plate group; 12---fourth gear plate; 121---fifth gear plate; 13---condenser cylindrical shell; 14---tube sheet; 15---electrical heating sleeve pipe; 16---oil temperature switch joint; 17---oil level switch joint; 81---air-vent.
Detailed description of the invention
Below in conjunction with accompanying drawing 1,2,3,4 and embodiment, the present invention is further described:
The present embodiment is that a kind of to be applied in thermic load amount be the model of 690KW is the built-in oil eliminator formula condenser of refrigeration air-conditioning unit of C2209, and it comprises air inlet pipe 1, built-in oil content group, oil collecting pipe group 7, condensing heat-exchanging pipe group 9, drain pipe group 10, condenser cylindrical shell 13, tube sheet 14, first by air inlet pipe 1, drain pipe group 10, oil collecting pipe 7 assembles according to Fig. 1 and condenser cylindrical shell 13, and wherein built-in oil content group is by gas block panel 2, first baffle plate 3, second baffle 31, third gear plate 5, fourth gear plate 12, fifth gear plate 121, first stainless steel filtering net plate group 4, second stainless steel filtering net plate group 11, 3rd stainless steel filtering net plate group 101, convex dividing plate 8 forms, need according to Fig. 2, 3, built-in oil separation component and condenser cylindrical shell 13, by the combination of each for built-in oil content Assembly of the parts, then assemble by 4, finally by each part according to Fig. 1, 2, 3, Standard shown in 4 gets up, and condenser cylindrical shell 13 interior diameter is φ 550mm, and length is 2670mm, and adopt steel plate to roll and form, built-in oil separation component is 1950mm along condenser cylindrical shell 13 axial length, and oil collecting pipe 7 is positioned at built-in oil separation component two ends.The present embodiment also containing security component joint, comprises electrical heating sleeve pipe 15, oil temperature switch joint 16, oil temperature switch joint 17, is all placed on oil collecting pipe 7, as shown in Figure 1.
Wherein air inlet pipe 1 be fixed on the geometric center top of condenser cylindrical shell 13 and stretch out outside condenser cylindrical shell 13, rotate 45 ° around condenser cylindrical shell 13 axis in the middle of the top that built-in oil separation component is arranged on condenser cylindrical shell 13, be in the below of air inlet pipe 1.The enclosure space that built-in oil separation component is made up of condenser cylindrical shell 13, gas block panel 2, first baffle plate 3, second baffle 31, third gear plate 5, fourth gear plate 12, fifth gear plate 121, first stainless steel filtering net plate group 4, second stainless steel filtering net plate group the 11, the 3rd stainless steel filtering net plate group 101 and convex dividing plate 8.Convex dividing plate 8 axially tilts 45 ° to be fixedly installed in condenser cylindrical shell 13 along condenser cylindrical shell 13, and as the bottom surface of built-in oil separation component, the length of convex dividing plate 8 is shorter than condenser cylindrical shell 13 length; Fourth gear plate 12 and fifth gear plate 121 are separately positioned on convex dividing plate 8 both sides, as two sides of built-in oil separation component.Convex dividing plate 8 centre is also provided with the first baffle plate 3 and second baffle 31, first baffle plate 3, second baffle 31, fourth gear plate 12 and fifth gear plate 121 are parallel to each other, and lower end is all fixed on convex dividing plate 8, and upper end is all fixed on condenser cylindrical shell 13 inwall; Between first baffle plate 3 and second baffle 31, geometrical clamp holds gas block panel 2 and the first stainless steel filtering net plate group 4 successively, gas block panel 2 upper surface is just to air inlet pipe 1 gas outlet, and leave enough spaces between condenser cylindrical shell 13 and convex dividing plate 8, first stainless steel filter screen plate group 4 four limit is fixed respectively at the first baffle plate 3, second baffle 31, convex dividing plate 8 and condenser cylindrical shell 13, be in the bottom of gas block panel 2, convex dividing plate 8, first plate washer 3, second plate washer 31 and the first region that screen pack group (4) is formed excessively form first order oil piece-rate system.Third gear plate 5 is in the bottom of the first stainless steel filter screen plate group 4, and leaves the space that enough gas passes through between the first baffle plate 3 and second baffle 31, and is fixed on condenser cylindrical shell 13 and be arranged in parallel with the first stainless steel filter screen plate group 4, second stainless steel filtering net plate group 11 and the 3rd stainless steel filtering net plate group 101 are symmetricly set on the both sides of the first stainless steel filter screen plate group 4, second stainless steel filtering net plate group 11 fixed clamp is at the first baffle plate 3, fifth gear plate 121, between condenser cylindrical shell 13 and convex dividing plate 8, 3rd stainless steel filtering net plate group 101 fixed clamp is at second baffle 31, fourth gear plate 12, between condenser cylindrical shell 13 and convex dividing plate 8, and all be arranged in parallel with the first stainless steel filter screen plate group 4, first order oil piece-rate system both sides and the oil piece-rate system of the formation second level, region between fourth speed plate 12 and fifth speed plate 121.Third gear plate 5, cavity between convex dividing plate 8 and condenser cylindrical shell 13 form shoe cream room, and oil collecting pipe group 7 is arranged on both sides, shoe cream room bottom, and rotates 55 ° around condenser cylindrical shell 13 axis; Convex dividing plate 8 is provided with air-vent 81 respectively between the air outlet slit place of the second stainless steel filtering net plate group 11 and the 3rd stainless steel filtering net plate group 101 and condenser cylindrical shell 13 bottom.
The using method of the present invention's built-in oil content formula condenser is: the HTHP gas mixture coming from exhaust outlet of compressor enters in air inlet pipe 1, enter in the built-in oil content group of condenser thereupon, after gas block panel 2, gas mixture flowing velocity reduces, mixture evenly passes through the first stainless steel filtering net plate group 4 with the flow velocity of 1 ~ 3m/s, gas mixture is tentatively filtered, the refrigeration oil 6 filtered out also drips along containing convex dividing plate 8 under gravity through the first stainless steel filtering net plate group 4 inside, converge and flow into by convex dividing plate 8, fourth gear plate 12, fifth gear 121, in the shoe cream room that condenser cylindrical shell 13 is formed, so far complete primary oil to be separated.Gas mixture after primary oil piece-rate system is filtered is through third gear plate 5, gas mixture flowing velocity reduces below 1m/s, then even the second stainless steel filtering net plate group 11 and the 3rd stainless steel filtering net plate group 101 by being distributed in both sides, gas mixture is further filtered, refrigeration oil 6 after being separated by two-stage filter screen group flows into shoe cream room via the second stainless steel filtering net plate group 11 and the 3rd stainless steel filtering net plate group 101 inside along convex dividing plate 8 surface by gravity, by being arranged on the oil collecting pipe 7 at condenser cylindrical shell 13 two ends to refrigerated air-conditioning system fuel feeding, enter in the lower space of condenser cylindrical shell 13 by the gas after filter screen by the air-vent 81 that convex dividing plate 8 is arranged, heat exchange is carried out with condensing heat-exchanging pipe group 9, drain pipe 10 by being arranged on cylinder body bottom after gas is condensed into liquid supplies to refrigeration system expansion gear.
Structure of the present invention is simple, and processing and manufacturing cost is low, the built-in oil content of condenser reduction air conditioner refrigerating unit appearance and size by a relatively large margin.Adopt the two-way filter screen of twin-stage to divide oily structure, have higher reliability relative to traditional built-in oil content, oil-dividing efficiency can reach more than 99.9%.The design of convex dividing plate 8, fourth gear plate 12 and fifth gear plate 121 significantly reduces the heat exchanging corner caused due to the design of built-in oil content, makes the present invention have higher heat exchange efficiency relative to conventional internal oil separating condenser, and then obtains higher Energy Efficiency Ratio.
The foregoing is only specific embodiments of the invention, but architectural feature of the present invention is not limited thereto, any those skilled in the art is in this area, and the change done and modification are all encompassed within the scope of the claims of the present invention.
Claims (6)
1. a built-in oil eliminator formula condenser, comprise: condenser cylindrical shell (13), tube sheet (14), condensing heat-exchanging pipe (9), oil collecting pipe group (7), drain pipe group (10), condenser cylindrical shell (13) inside is fixed with built-in oil separation component, it is characterized in that: described built-in oil separation component comprises the first plate washer (3) and second baffle (31) that are arranged on air inlet pipe (1) both sides, bottom, gas block panel (2) is fixed with between first plate washer (3) and the second plate washer (31), gas block panel (2) below is fixed with the first screen pack group (4), condenser cylindrical shell (13) axial direction tilts to be fixed with convex dividing plate (8), convex dividing plate (8) two ends are fixed with fourth speed plate (12) and fifth speed plate (121), convex dividing plate (8), first plate washer (3), second plate washer (31) and first crosses the region formation first order oil piece-rate system that screen pack group (4) is formed, third gear plate (5) is fixed with between convex dividing plate (8) top and the first screen pack group (4) below, be fixed with the second screen pack group (11) between first plate washer (3) and fifth speed plate (121), between the second plate washer (31) and fourth speed plate (12), be fixed with the 3rd screen pack group (101), first order oil piece-rate system both sides and the oil piece-rate system of the formation second level, region between fourth speed plate (12) and fifth speed plate (121).
2. one according to claim 1 built-in oil eliminator formula condenser, it is characterized in that: described third gear plate (3) below surrounds shoe cream room with convex dividing plate (8), condenser cylindrical shell (13), oil collecting pipe group (7) is fixedly installed on both sides, shoe cream room bottom and stretches out condenser cylindrical shell (13) and rotate 50 ° ~ 65 ° around condenser cylindrical shell (13) axis outward.
3. one according to claim 1 built-in oil eliminator formula condenser, is characterized in that: described convex dividing plate (8) is provided with air-vent (81) respectively between the air outlet slit place of the second stainless steel filtering net plate group (11) and the 3rd stainless steel filtering net plate group (101) and condenser cylindrical shell (13) bottom.
4. one according to claim 1 built-in oil eliminator formula condenser, it is characterized in that: described gas block panel (2), third gear plate (5), the first stainless steel filter screen plate group (4), the second stainless steel filtering net plate (11) and the 3rd stainless steel filtering net plate group (101) be arranged in parallel, first stainless steel filtering net plate group (4) thickness is 10mm ~ 30mm, and the second stainless steel filtering net plate (11) and the 3rd stainless steel filtering net plate group (101) thickness are 30mm ~ 50mm.
5. one according to claim 1 built-in oil eliminator formula condenser, is characterized in that: described convex dividing plate (8) angle of inclination in axial direction in condenser cylindrical shell (13) is 30 ° ~ 45 °.
6. one according to claim 1 built-in oil eliminator formula condenser, is characterized in that: described built-in oil eliminator formula condenser also comprises the oil collecting pipe group (7) that condenser cylindrical shell (13) is arranged as refrigeration oil ejector.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510002674.XA CN104596162B (en) | 2015-01-05 | 2015-01-05 | Condenser with built-in oil separator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510002674.XA CN104596162B (en) | 2015-01-05 | 2015-01-05 | Condenser with built-in oil separator |
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| CN104596162A true CN104596162A (en) | 2015-05-06 |
| CN104596162B CN104596162B (en) | 2017-02-22 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104833140A (en) * | 2015-05-29 | 2015-08-12 | 珠海格力电器股份有限公司 | Heat exchange equipment and oil return type condenser thereof |
| CN104833139A (en) * | 2015-05-29 | 2015-08-12 | 珠海格力电器股份有限公司 | Heat exchange equipment and condenser with built-in oil separation system |
| CN105387663A (en) * | 2015-12-15 | 2016-03-09 | 珠海格力电器股份有限公司 | Water chilling unit |
| CN105571219A (en) * | 2015-12-21 | 2016-05-11 | 重庆美的通用制冷设备有限公司 | Oil separating assembly, heat exchange assembly and air-conditioning system |
| CN107677021A (en) * | 2016-11-07 | 2018-02-09 | 珠海格力电器股份有限公司 | Oil separator, condenser and refrigerating plant |
| CN107940837A (en) * | 2017-12-21 | 2018-04-20 | 珠海格力电器股份有限公司 | Oil separator, condenser and refrigerating device |
| CN109595140A (en) * | 2018-12-28 | 2019-04-09 | 合肥通用机械研究院有限公司 | A kind of horizontal type cooler for large-scale refrigeration compressor |
| CN115265234A (en) * | 2022-06-24 | 2022-11-01 | 广州五所环境仪器有限公司 | Environment testing equipment and heat exchange device |
| US11867440B2 (en) | 2018-06-02 | 2024-01-09 | Carrier Corporation | Water-cooled heat exchanger |
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| CN204460859U (en) * | 2015-01-05 | 2015-07-08 | 麦克维尔空调制冷(武汉)有限公司 | A kind of built-in oil eliminator formula condenser |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104833139A (en) * | 2015-05-29 | 2015-08-12 | 珠海格力电器股份有限公司 | Heat exchange equipment and condenser with built-in oil separation system |
| CN104833139B (en) * | 2015-05-29 | 2017-11-17 | 珠海格力电器股份有限公司 | Heat exchange equipment and condenser with built-in oil separation system |
| CN104833140A (en) * | 2015-05-29 | 2015-08-12 | 珠海格力电器股份有限公司 | Heat exchange equipment and oil return type condenser thereof |
| CN105387663A (en) * | 2015-12-15 | 2016-03-09 | 珠海格力电器股份有限公司 | Water chilling unit |
| CN105387663B (en) * | 2015-12-15 | 2019-01-25 | 珠海格力电器股份有限公司 | Water chilling unit |
| CN105571219A (en) * | 2015-12-21 | 2016-05-11 | 重庆美的通用制冷设备有限公司 | Oil separating assembly, heat exchange assembly and air-conditioning system |
| CN105571219B (en) * | 2015-12-21 | 2018-12-18 | 重庆美的通用制冷设备有限公司 | Oily separation assembly, heat-exchanging component and air-conditioning system |
| CN107677021B (en) * | 2016-11-07 | 2024-03-29 | 珠海格力电器股份有限公司 | Oil separation device, condenser and refrigeration device |
| CN107677021A (en) * | 2016-11-07 | 2018-02-09 | 珠海格力电器股份有限公司 | Oil separator, condenser and refrigerating plant |
| CN107940837A (en) * | 2017-12-21 | 2018-04-20 | 珠海格力电器股份有限公司 | Oil separator, condenser and refrigerating device |
| US11867440B2 (en) | 2018-06-02 | 2024-01-09 | Carrier Corporation | Water-cooled heat exchanger |
| CN109595140A (en) * | 2018-12-28 | 2019-04-09 | 合肥通用机械研究院有限公司 | A kind of horizontal type cooler for large-scale refrigeration compressor |
| CN115265234A (en) * | 2022-06-24 | 2022-11-01 | 广州五所环境仪器有限公司 | Environment testing equipment and heat exchange device |
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| CN104596162B (en) | 2017-02-22 |
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