CN210317677U - Cooling device and air compressor - Google Patents
Cooling device and air compressor Download PDFInfo
- Publication number
- CN210317677U CN210317677U CN201921180006.6U CN201921180006U CN210317677U CN 210317677 U CN210317677 U CN 210317677U CN 201921180006 U CN201921180006 U CN 201921180006U CN 210317677 U CN210317677 U CN 210317677U
- Authority
- CN
- China
- Prior art keywords
- gas
- lubricating oil
- heat exchange
- outlet
- exchange device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Compressor (AREA)
Abstract
The utility model provides a cooling device and air compressor machine, include: a hermetic case having a hermetic space; the refrigerating device comprises an evaporator and a refrigerating device, wherein the evaporator is arranged inside the closed shell; and the lubricating oil heat exchange device is arranged in the closed shell and is connected in series in a pipeline communicating a lubricating oil outlet of the oil-gas separator and a lubricating oil inlet of the machine head. The utility model discloses a cooling device, introduce the air compressor machine with refrigerating plant for the first time and cool off lubricating oil, this kind of cooling mode power consumption is few, cooling speed is fast, the cooling effect is good, because lubricating oil heat exchange device sets up inside airtight casing, can not receive the influence of fine particles such as external dust, long-term use can not reduce heat transfer efficiency yet, can effectively overcome a series of problems that heat transfer efficiency reduces and leads to after aluminium system radiator uses a period among the prior art, be favorable to prolonging the life of air compressor machine, guarantee that the air compressor machine keeps the stable performance in the operation of longer time, improve user experience.
Description
Technical Field
The utility model relates to an air compressor machine technical field, concretely relates to carry out refrigerated cooling device and air compressor machine to lubricating oil.
Background
The high temperature that the air compressor machine produced in the operation mainly reduces the temperature through lubricating oil, and the aircraft nose of air compressor machine can be damaged to too high or low excessively of the temperature of lubricating oil. The most common mode of the conventional air compressor equipment is an air cooling type, namely an aluminum radiator and a fan are adopted, a heat dissipation channel is arranged in the aluminum radiator, lubricating oil enters from an inlet of the heat dissipation channel and exits from an outlet of the heat dissipation channel, the fan cools the aluminum radiator in an air cooling mode in a blowing or sucking mode, a temperature range is set on a control panel, the rotating speed of the fan is controlled through a frequency converter to adjust the temperature, the temperature of the lubricating oil is kept within a set safe temperature range, and the normal operation of the air compressor is further ensured.
The utility model discloses the people is in the enterprise's operation of many years, and the discovery uses the air compressor machine of certain age (5-8 years usually), can appear producing gas efficiency and descend usually, problem that the consumption rises, and equipment trouble such as occasionally sending out aluminium system radiator bulging blasting, aircraft nose locking do not operate. This is generally thought in the industry that the service life of the air compressor is up and needs to be updated, and the utility model also considers this for a while. Later utility model people inspected the aluminium system radiator of blowing out the blasting and the aircraft nose that does not operate of locking, found that the inside lubricating oil of aluminium system radiator of blowing out the blasting burnt pastiness, and the inside lubricating oil that also finds out burnt pastiness of aircraft nose that does not operate of locking. The utility model carries out cutting inspection on the aluminum radiators of some old machines later, and finds that lubricating oil which is not easy to flow adheres to the inner parts of the aluminum radiators, so that the trafficability is poor; utility model people have carried out the analysis to the service environment of air compressor machine again, and the mill's ambient air quality that the discovery air compressor machine used is relatively poor, and the dust in the air is attached to the surface at aluminium system radiator easily, influences the heat dissipation, has controlled the fan at the converter and has bloied with maximum rotational speed, and the temperature of lubricating oil still is in the upper limit of the temperature range that control panel set for or slightly surpasss, and the air compressor machine can work for a relatively long time under this kind of environment usually.
Through earnestly analyzing, the utility model discloses the people think, there is the defect mainly in current forced air cooling mode, has caused the warm water to boil the harm of frog type to air compressor machine equipment, and equipment operation longer time back must appear producing the problem that gas inefficiency, consumption rise. The method comprises the following steps: the existing air cooling mode generally comprises an aluminum radiator and a fan, in order to improve the heat dissipation efficiency, a plurality of gaps are uniformly distributed on the aluminum radiator, the fan blows air to pass through the gaps to take away heat so as to cool the aluminum radiator, however, the actual working condition is complex, the air compressor generally works in places with more fine particles such as dust and the like, after being sucked by the fan and blown to the aluminum radiator, the fine particles are easy to be attached to the gaps of the aluminum radiator, the heat dissipation efficiency of the aluminum heat radiator is reduced, after gradual accumulation, the frequency converter gradually controls the fan to increase the rotating speed, the temperature of the aluminum heat radiator is gradually increased, the lubricating oil runs at a high temperature for a long time, becomes variable-focus and sticky, slowly adheres to the inner wall of a heat dissipation channel of the aluminum heat radiator, the trafficability is poor, the heat dissipation efficiency of the aluminum heat radiator is further reduced, and the process is circulated; in addition, the sticky lubricating oil of zooming can also cause the increase of the viscosity of the machine head, finally causes the problems of low gas production efficiency and power consumption increase of the air compressor, and can cause serious equipment faults such as blowing and explosion of the aluminum radiator, no operation of locking the machine head and the like when the air compressor is in the worst condition.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the utility model lies in overcoming the air compressor machine among the prior art and adopting traditional forced air cooling, long-time operation back leads to producing the technical defect that gas efficiency is low, the consumption rises and life is short to a cooling device of brand-new structure is provided, this cooling device can not lead to producing gas efficiency low-power consumption after the air compressor machine runs for a long time yet and rise the scheduling problem, can improve equipment life.
Therefore, the utility model provides a cooling device, include:
a hermetic case having a hermetic space;
the refrigerating device comprises an evaporator and a refrigerating device, wherein the evaporator is arranged inside the closed shell;
and the lubricating oil heat exchange device is arranged in the closed shell and is connected in series in a pipeline communicating a lubricating oil outlet of the oil-gas separator and a lubricating oil inlet of the machine head.
Preferably, the inner diameter of a pipeline for circulating lubricating oil of the lubricating oil heat exchange device is larger than 3 mm.
As a preferable aspect, the refrigeration apparatus includes:
a compressor having a compressor inlet and a compressor outlet;
a condenser having a condenser inlet in communication with the compressor outlet, and a condenser outlet;
a throttling device having a throttling inlet in communication with the condenser outlet, and a throttling outlet;
an evaporator having an evaporator inlet in communication with the throttling outlet, and an evaporator outlet;
a gas-liquid separator having a gas-liquid separator inlet in communication with the evaporator outlet and a gas-liquid separator outlet in communication with the compressor inlet.
Preferably, the lubricating oil heat exchange device is coiled inside the closed shell.
Preferably, the evaporator is arranged in the middle of the closed shell, and the lubricating oil heat exchange device is arranged outside the evaporator in a surrounding mode.
Preferably, a gas heat exchange device is further arranged inside the closed shell, and the gas heat exchange device is connected in series in a pipeline between a gas outlet of the oil-gas separator and a gas inlet of the gas storage tank.
Preferably, the gas heat exchanger is disposed around the outside of the lubricant oil heat exchanger.
Preferably, the closed shell is a heat insulation shell.
As a preferred scheme, the closed shell is a heat-conducting shell;
further comprising:
the heat preservation shell is sleeved outside the closed shell and is provided with a spacing space;
and the gas heat exchange device is arranged between the heat-insulating shell and the closed shell and is connected in series in a pipeline of a gas outlet of the oil-gas separator and a gas inlet of the gas storage tank.
Preferably, the gas heat exchange device is arranged around the outer side of the outer wall of the closed shell.
The utility model also provides an air compressor, including air cleaner, aircraft nose, oil gas bucket, oil and gas separator, gas holder, still include as above arbitrary cooling device.
The technical scheme provided by the utility model, following advantage has:
1. the utility model discloses a cooling device, the trade conventionality has been broken through, introduce the air compressor machine with refrigerating plant for the first time and cool off lubricating oil, this kind of cooling mode power consumption is few, cooling speed is fast, the cooling effect is good, because lubricating oil heat exchange device sets up inside airtight casing, can not receive the influence of tiny particle such as external dust, long-term use can not reduce heat transfer efficiency yet, can effectively overcome a series of problems that heat transfer efficiency reduces and leads to after the aluminium system radiator uses a period among the prior art, be favorable to prolonging the life of air compressor machine, guarantee that the air compressor machine keeps the stable performance in the operation of longer time, improve user experience.
2. The utility model discloses a cooling device, the pipeline internal diameter that is used for circulating lubricating oil of lubricating oil heat exchange device > 3mm, because lubricating oil heat exchange device sets up inside the lower airtight casing of temperature, and heat exchange efficiency is high (because the existence of evaporimeter), can set up the pipeline internal diameter that is used for circulating lubricating oil of lubricating oil heat exchange device to > 3mm (the pipeline internal diameter that is used for circulating lubricating oil of traditional aluminium system heating panel generally does, do not basically exceed 3mm, because can not guarantee the radiating effect after surpassing), thereby improve the trafficability characteristic of lubricating oil greatly, guarantee the radiating efficiency.
3. The utility model discloses a cooling device, refrigerating plant include compressor, condenser, throttling arrangement, evaporimeter and vapour and liquid separator, and refrigerating plant operation back will be used for cryogenic evaporimeter setting in airtight casing, can promote the cooling efficiency of lubricating oil greatly.
4. The utility model discloses a cooling device, lubricating oil heat exchange device encircle the evaporimeter setting, can improve heat exchange efficiency.
5. The utility model discloses a cooling device still includes gaseous heat exchange device, sets up inside airtight casing, establishes ties in the gas outlet of oil and gas separator and the gas inlet's of gas holder pipeline, and the cold volume that can use the evaporimeter like this provides cooling efficiency to gaseous cooling down. Furthermore, the gas heat exchange device can be arranged to surround the lubricating oil heat exchange device, so that the cooling effect of the lubricating oil can be ensured, and the cold energy cannot be wasted.
6. In the cooling device of the utility model, the closed shell is made of heat conducting material, and the heat preservation shell is additionally arranged outside the closed shell, and an interval space is formed between the closed shell and the heat preservation shell; the gas heat exchange device is arranged between the heat preservation shell and the closed shell, so that the problem of uneven cooling caused by mutual interference between the lubricating oil heat exchange device and the gas heat exchange device can be avoided. Furthermore, the gas heat exchange device is arranged on the outer side of the outer wall of the closed shell in a surrounding mode, and therefore heat exchange efficiency can be improved.
7. The utility model also provides an air compressor, including air cleaner, aircraft nose, oil gas bucket, oil and gas separator, gas holder, still include as above arbitrary cooling device. The cooling device has all advantages brought by the cooling device.
Drawings
In order to more clearly illustrate the technical solutions in the prior art or the embodiments of the present invention, the drawings used in the description of the prior art or the embodiments are briefly introduced below.
Fig. 1 is a schematic view of the overall structure of the cooling device of the present invention.
Reference numerals: 1. a compressor; 11. a compressor inlet; 12. a compressor outlet; 2. a condenser; 21. a condenser inlet; 22. an outlet of the condenser; 3. a throttling device; 31. a throttle inlet; 32. a throttle outlet; 4. an evaporator; 41. an evaporator inlet; 42. an evaporator outlet; 5. a gas-liquid separator; 51. a gas-liquid separator inlet; 52. an outlet of the gas-liquid separator; 6. sealing the shell; 60. sealing the space; 7. a lubricating oil heat exchange device; 8. a gas heat exchange device; 9. and (4) a heat-insulating shell.
Detailed Description
The technical solution of the present invention will be described in detail with reference to the accompanying drawings.
Examples
The present embodiment provides a cooling apparatus, as shown in fig. 1, including: a hermetic case 6 having a hermetic space 60; a refrigeration device comprising an evaporator 4 disposed inside the hermetic shell 6; and the lubricating oil heat exchange device 7 is arranged in the closed shell 6 and is connected in series in a pipeline for communicating a lubricating oil outlet of the oil-gas separator with a lubricating oil inlet of the machine head.
The cooling device of this embodiment, the trade conventionality has been broken through, introduce the air compressor machine with refrigerating plant for the first time and cool off lubricating oil, this kind of cooling mode power consumption is few, cooling speed is fast, the cooling effect is good, because lubricating oil heat exchange device 7 sets up inside airtight casing 6, can not receive the influence of tiny particle such as external dust, long-term use can not reduce heat transfer efficiency yet, can effectively overcome a series of problems that heat transfer efficiency reduces and leads to after the aluminium system radiator uses a period among the prior art, be favorable to prolonging the life of air compressor machine, guarantee that the air compressor machine keeps the stable performance in the operation of longer time, improve user experience.
The inner diameter of the pipeline for circulating the lubricating oil of the lubricating oil heat exchange device 7 is more than 3mm, and is 4mm in the embodiment. Because lubricating oil heat exchange device 7 sets up inside the lower airtight casing 6 of temperature, heat exchange efficiency is high (because the existence of evaporimeter), can set up lubricating oil heat exchange device's the pipeline internal diameter that is used for circulating lubricating oil to be > 3mm (the pipeline internal diameter that is used for circulating lubricating oil of traditional aluminium system heating panel generally does, does not basically exceed 3mm, because can not guarantee the radiating effect after surpassing) to improve the trafficability characteristic of lubricating oil greatly, guarantee the radiating efficiency.
The connection of the lube oil heat exchanger 7 after it is arranged inside the hermetic shell 6 can be as follows:
the closed shell 6 is provided with a lubricating oil inlet and a lubricating oil outlet; the lubricating oil heat exchange device 7 is arranged inside the closed shell 6, and two ends of the lubricating oil heat exchange device 7 are respectively connected with one ends, located inside the closed shell 6, of the lubricating oil inlet and the lubricating oil outlet; one end of the lubricating oil inlet, which is positioned outside the closed shell 6, is connected with a lubricating oil outlet of the oil-gas separator, and one end of the lubricating oil outlet, which is positioned outside the closed shell 6, is communicated with a lubricating oil inlet of the machine head.
The refrigerating apparatus includes: a compressor 1 having a compressor inlet 11 and a compressor outlet 12; a condenser 2 having a condenser inlet 21 in communication with the compressor outlet 12, and a condenser outlet 22; a throttle device 3 having a throttle inlet 31 communicating with the condenser outlet 22, and a throttle outlet 32; an evaporator 4 having an evaporator inlet 41 communicating with the throttle outlet 32, and an evaporator outlet 42; a gas-liquid separator 5 having a gas-liquid separator inlet 51 communicating with the evaporator outlet 42, and a gas-liquid separator outlet 52 communicating with the compressor inlet 11. After the refrigerating device operates, the evaporator for refrigerating is arranged in the closed shell, so that the cooling efficiency of the lubricating oil can be greatly improved.
The lubricating oil heat exchange device 7 is wound inside the hermetic case 6.
The evaporator 4 is arranged in the middle of the closed shell 6, and the lubricating oil heat exchange device 7 is arranged outside the evaporator 4 in a surrounding mode. The lubricating oil heat exchange device 7 is arranged around the evaporator 4, and the heat exchange efficiency can be improved.
After the evaporator 4 is arranged inside the closed shell 6, the connection with the throttling device 3 and the oil-gas separator 5 can be as follows:
the closed shell 6 is provided with a refrigerant inlet and a refrigerant outlet; the evaporator inlet 41 and the evaporator outlet 42 are respectively connected with the refrigerant inlet and the refrigerant outlet at one end inside the sealed shell 6 in a sealing manner, the refrigerant inlet at one end outside the sealed shell 6 is connected with the throttle outlet 32, and the refrigerant outlet at one end outside the sealed shell 6 is connected with the gas-liquid separator inlet 51.
And a gas heat exchange device 8 is further arranged in the closed shell 6, and the gas heat exchange device 8 is connected in series in pipelines of a gas outlet of the oil-gas separator and a gas inlet of the gas storage tank. The gas heat exchange device 8 is arranged around the outside of the lubricating oil heat exchange device 7. Therefore, the cooling capacity of the evaporator 4 can be used for cooling the gas, and the cooling efficiency is provided. Furthermore, the gas heat exchange device 8 is arranged outside the lubricating oil heat exchange device 7 in a surrounding mode, so that the cooling effect of lubricating oil can be guaranteed, and cooling capacity cannot be wasted.
In the embodiment, the closed shell 6 is a heat insulation shell, the lubricating oil heat exchange device 7 is a copper pipe, and the gas heat exchange device 8 is a copper pipe; the heat exchange device with other common structures can be replaced by the technical personnel in the field according to the actual situation. And a drainage structure is also arranged at the bottom of the closed shell 6.
The working process of the cooling device in this embodiment is as follows:
when lubricating oil needs to be cooled, a compressor 1 and a condenser 2 are started, the compressor 1 compresses a refrigerant into a high-temperature high-pressure gas state and inputs the gas state into the condenser 2, the condenser 2 dissipates heat of the refrigerant to form a low-temperature high-pressure liquid state and inputs the liquid state into a throttling device 3, the throttling device 3 throttles and releases the refrigerant to enter an evaporator 4 to form low-temperature low-pressure gas state released cold energy, the low-temperature low-pressure gas state released cold energy is input into a gas-liquid separation tank 5 after heat exchange of the evaporator, and the gas state refrigerant is input into the compressor 1 after gas-liquid; the lubricating oil is output to a lubricating oil heat exchange device 7 from a lubricating oil outlet of the oil-gas separator, and is conveyed to a lubricating oil inlet of the machine head after being cooled; and the gas is output to the gas heat exchange device 8 from a gas outlet of the oil-gas separator, cooled and then conveyed to the gas storage tank.
Example 2
The present embodiment provides a cooling device, which is a modification of embodiment 1, except that: the closed shell 6 is a heat-conducting shell; further comprising: the heat preservation shell 9 is sleeved outside the closed shell 6 and is provided with a spacing space; and the gas heat exchange device 8 is arranged between the heat-insulating shell 9 and the closed shell 6 and is connected in series in a pipeline of a gas outlet of the oil-gas separator and a gas inlet of the gas storage tank.
The gas heat exchange device 8 is arranged around the outer side of the outer wall of the closed shell 6.
The gas heat exchange device 8 is arranged between the heat preservation shell 9 and the closed shell 6, so that the problem of uneven cooling caused by mutual interference between the lubricating oil heat exchange device 7 and the gas heat exchange device 8 can be avoided. Further, the gas heat exchange device 8 is arranged around the outer side of the outer wall of the closed shell 6, so that the heat exchange efficiency can be improved.
Example 3
The embodiment provides an air compressor, which comprises an air filter, a machine head, an oil-gas barrel, an oil-gas separator and an air storage tank, and further comprises a cooling device as described in embodiment 1 or 2.
The cooling device has all advantages brought by the cooling device.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.
Claims (11)
1. A cooling device, characterized by: the method comprises the following steps:
a sealed case (6) having a sealed space (60);
a refrigeration device comprising an evaporator (4) arranged inside the hermetic shell (6);
and the lubricating oil heat exchange device (7) is arranged in the closed shell (6) and is connected in series in a pipeline for communicating a lubricating oil outlet of the oil-gas separator with a lubricating oil inlet of the machine head.
2. The cooling apparatus according to claim 1, wherein: the inner diameter of a pipeline for circulating lubricating oil of the lubricating oil heat exchange device (7) is larger than 3 mm.
3. The cooling apparatus according to claim 1, wherein: the refrigerating apparatus includes:
a compressor (1) having a compressor inlet (11) and a compressor outlet (12);
a condenser (2) having a condenser inlet (21) in communication with the compressor outlet (12), and a condenser outlet (22);
a throttling device (3) having a throttling inlet (31) communicating with the condenser outlet (22), and a throttling outlet (32);
an evaporator (4) having an evaporator inlet (41) in communication with the throttle outlet (32), and an evaporator outlet (42);
a gas-liquid separator (5) having a gas-liquid separator inlet (51) in communication with the evaporator outlet (42), and a gas-liquid separator outlet (52) in communication with the compressor inlet (11).
4. The cooling apparatus according to claim 1, wherein: and the lubricating oil heat exchange device (7) is coiled inside the closed shell (6).
5. The cooling apparatus according to claim 4, wherein: the evaporator (4) is arranged in the middle of the closed shell (6), and the lubricating oil heat exchange device (7) is arranged on the outer side of the evaporator (4) in a surrounding mode.
6. The cooling device according to claim 4 or 5, wherein: and a gas heat exchange device (8) is further arranged inside the closed shell (6), and the gas heat exchange device (8) is connected in series in pipelines of a gas outlet of the oil-gas separator and a gas inlet of the gas storage tank.
7. The cooling apparatus according to claim 6, wherein: and the gas heat exchange device (8) is arranged outside the lubricating oil heat exchange device (7) in a surrounding manner.
8. The cooling apparatus according to claim 1, wherein: the closed shell (6) is a heat insulation shell.
9. The cooling device according to any one of claims 1 to 5, wherein:
the closed shell (6) is a heat-conducting shell;
further comprising:
the heat insulation shell (9) is sleeved outside the closed shell (6) and is provided with a spacing space;
and the gas heat exchange device (8) is arranged between the heat-insulating shell (9) and the closed shell (6) and is connected in series in a pipeline of a gas outlet of the oil-gas separator and a gas inlet of the gas storage tank.
10. The cooling apparatus according to claim 9, wherein: and the gas heat exchange device (8) is arranged on the outer side of the outer wall of the closed shell (6) in a surrounding manner.
11. The utility model provides an air compressor machine, includes air cleaner, aircraft nose, oil and gas bucket, oil and gas separator, gas holder, its characterized in that: further comprising a cooling device according to any one of claims 1-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921180006.6U CN210317677U (en) | 2019-07-25 | 2019-07-25 | Cooling device and air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921180006.6U CN210317677U (en) | 2019-07-25 | 2019-07-25 | Cooling device and air compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210317677U true CN210317677U (en) | 2020-04-14 |
Family
ID=70125817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921180006.6U Active CN210317677U (en) | 2019-07-25 | 2019-07-25 | Cooling device and air compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210317677U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110259666A (en) * | 2019-07-25 | 2019-09-20 | 海格尔压缩机(青岛)有限公司 | A kind of cooling device and air compressor machine |
-
2019
- 2019-07-25 CN CN201921180006.6U patent/CN210317677U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110259666A (en) * | 2019-07-25 | 2019-09-20 | 海格尔压缩机(青岛)有限公司 | A kind of cooling device and air compressor machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103759448B (en) | The two cooling system of a kind of X-ray machine | |
| CN210317677U (en) | Cooling device and air compressor | |
| CN114867306A (en) | 5G base station room energy-saving liquid cooling system taking nanofluid as medium | |
| CN201288351Y (en) | Automatic high-efficiency cooling system of digger hydraulic-oil | |
| CN205780776U (en) | A kind of aerogenerator unit speed-up gearbox radiator cooler | |
| CN207945996U (en) | Centrifugal refrigerating machines | |
| CN216894490U (en) | Mining refrigerating unit | |
| CN107702365A (en) | A kind of wind-cooled cold-water machine | |
| CN210128524U (en) | Multistage heat exchange air-cooling heat dissipation system for built-in display cabinet | |
| CN101382326A (en) | Split type semiconductor air conditioner | |
| CN212205124U (en) | Efficient circulating refrigerator | |
| CN211557815U (en) | Electric machine room cooling system | |
| CN210107744U (en) | Heat pump type oil heating unit | |
| CN212842308U (en) | Cascade type water chilling unit | |
| CN112212607A (en) | Rapid cooling device for hot working of aluminum alloy section | |
| CN107166820A (en) | Heat dissipation circulating system | |
| CN110259666A (en) | A kind of cooling device and air compressor machine | |
| CN217685324U (en) | Refrigerating unit for grain depot | |
| CN212936484U (en) | Water chiller unit frequency converter cooling device and water chiller unit | |
| CN205154547U (en) | Cylinder block, compressor, refrigerating system and refrigerator | |
| CN219459613U (en) | Double-head screw parallel low-temperature water chilling unit | |
| CN212253204U (en) | Refrigerating system with closed water-cooling condensing device | |
| CN213067181U (en) | Centralized ground underground cooling system based on split type heat pipes | |
| CN217685964U (en) | Cooling heat exchanger, refrigerant circulating system and cooling water equipment | |
| CN213276567U (en) | Active refrigeration type notebook computer radiator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |