CN203687440U - Low-temperature working condition overheating system - Google Patents
Low-temperature working condition overheating system Download PDFInfo
- Publication number
- CN203687440U CN203687440U CN201420034951.6U CN201420034951U CN203687440U CN 203687440 U CN203687440 U CN 203687440U CN 201420034951 U CN201420034951 U CN 201420034951U CN 203687440 U CN203687440 U CN 203687440U
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- Prior art keywords
- auxiliary
- compressor
- evaporator
- heat exchanger
- main
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- 238000013021 overheating Methods 0.000 title abstract 5
- 239000007788 liquid Substances 0.000 claims abstract description 38
- 238000001035 drying Methods 0.000 claims abstract description 16
- 238000005057 refrigeration Methods 0.000 claims description 18
- 238000001914 filtration Methods 0.000 claims description 14
- 238000001704 evaporation Methods 0.000 claims description 7
- 238000007906 compression Methods 0.000 abstract description 7
- 230000006835 compression Effects 0.000 abstract description 6
- 239000012530 fluid Substances 0.000 abstract 1
- 239000003507 refrigerant Substances 0.000 description 13
- 239000003921 oil Substances 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000003340 mental effect Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000010327 methods by industry Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
A low-temperature working condition overheating system comprises a main refrigerating system and an auxiliary overheating system, wherein the auxiliary overheating system is arranged at the rear end of an evaporator of the main refrigerating system serially and comprises a heat exchanger, an auxiliary compressor, an auxiliary evaporator, a first throttle valve, a first liquid supply solenoid valve and a first drying filter. The inlet of the auxiliary compressor is connected with the auxiliary evaporator, the outlet of the auxiliary compressor is connected with the inlet of the heat exchanger, and the outlet of the heat exchanger is connected with the auxiliary evaporator through the first throttle valve, the first liquid supply solenoid valve and the first drying filter. The low-temperature working condition overheating system has the advantage of avoiding liquid compression caused by the fact that refrigerating fluid incompletely returns back to the compressor along with return air when a main compressor makes ice at low temperature.
Description
Technical field
The utility model relates to ice making field, particularly a kind of worst cold case superheating system.
Background technology
The quality of the quality of ice-making system and upstream machines, equipment, parts has positive connection, and they directly affect the level of ice machine.China's refrigeration compressor R & D Level is improving constantly and progressively the completing of capital accumulation process.If China has, the Compressor Manufacturing level of independent intellectual property right is further enhanced, ice machine heat exchanger and machining accuracy and efficiency further promoted, its occupation rate of market at home and abroad market will have larger leap.
Heat exchanger is requisite unit in process engineering, is widely used in the engineering fields such as oil, chemical industry, light merit, pharmacy, food, machinery, metallurgy, power and refrigeration.In refrigerating plant, heat exchanger is a kind of device that makes the outside heat release of cold-producing medium, and shell and tube exchanger is widely used in refrigeration system, is characterized in that manufacturing process is simple, and process equipment is less demanding, adopts Single unit job lot production, and production efficiency is less demanding.At present, traditional heat exchanger internal structure complexity, processes heat-exchange capacity limited, and inefficiency causes ice-making system in the time of work, exists to a certain extent flow little, and resistance is large, does not reach desirable effect.
At present, on this batch (-type) ice-making system of pipe ice, helical-lobe compressor relies on oil pressure to promote, guiding valve is forward and backward movement in discharge chambe, it is lubricated that bearing in compressor needs stable oily flow to supply with, and the unstable and hydraulic compression of oil return is exactly that helical-lobe compressor is used in the biggest obstacle in main refrigeration system.At low temperature ice-making system after-stage, not exclusively, operative liquid cold-producing medium returns to compressor with return-air, causes hydraulic compression in evaporation.
Utility model content
In order to overcome the above-mentioned shortcoming of prior art, the purpose of this utility model is to provide and prevents that compressor is in the time of low temperature ice making, and a kind of worst cold case superheating system of hydraulic compression is not exclusively returned to compressor and causes in liquid refrigerant evaporation with return-air.
The utility model solves the technical scheme that its technical problem adopts: a kind of worst cold case superheating system, comprise main refrigeration system and auxiliary superheating system, wherein: described auxiliary superheating system is in tandem in main refrigeration system shell-tube evaporator rear end, described auxiliary superheating system contains heat exchanger, auxiliary compressor, auxiliary evaporator, choke valve one, liquid supply electromagnetic valve one and device for drying and filtering one, the entrance of described auxiliary compressor is connecting auxiliary evaporator, outlet is connecting the entrance of heat exchanger, the outlet of described heat exchanger is by choke valve one, liquid supply electromagnetic valve one is being connected auxiliary evaporator with device for drying and filtering one.
As further improvement of the utility model: described main refrigeration system comprises main compressor, oil-liquid separator, condenser, device for drying and filtering two, liquid supply electromagnetic valve two, choke valve two and shell-tube evaporator, described main compressor is connecting the entrance of condenser by oil-liquid separator, between condensator outlet and shell-tube evaporator entrance, runner is provided with device for drying and filtering two, liquid supply electromagnetic valve two and choke valve two, and housing evaporator outlet is connecting the entrance of main compressor by heat exchanger.
As further improvement of the utility model: described oil-liquid separator and main compressor are provided with a loop.
As further improvement of the utility model: described auxiliary compressor is provided with the hygrosensor that obtains evaporating temperature, and hygrosensor is connecting the starting drive of auxiliary compressor.
As further improvement of the utility model: described auxiliary superheating system is provided with the adjusting device of dynamic adjustments flow.
Compared with prior art, the beneficial effects of the utility model are:
The utlity model has practically, simple in structure firm, disposal ability is large, stable work in work, and easy to clean, cost performance is high, easily uses and installs, the advantages such as environmental protection.In the process of low temperature ice making, can prevent that liquid refrigerant evaporation from not exclusively returning to compressor and cause the phenomenon of hydraulic compression with return-air, maintain the stability of refrigeration.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
The specific embodiment
Existing accompanying drawings and embodiment further illustrate the utility model:
A kind of worst cold case superheating system, comprise main refrigeration system and auxiliary superheating system, wherein: described auxiliary superheating system is in tandem in main refrigeration system shell-tube evaporator 7 rear ends, described auxiliary superheating system contains heat exchanger 8, auxiliary compressor 9, auxiliary evaporator 10, choke valve 1, liquid supply electromagnetic valve 1 and device for drying and filtering 1, the entrance of described auxiliary compressor 9 is connecting auxiliary evaporator 10, outlet is connecting the entrance of heat exchanger 8, the outlet of described heat exchanger 8 is by choke valve 1, liquid supply electromagnetic valve 1 is being connected auxiliary evaporator 10 with device for drying and filtering 1.
Described main refrigeration system comprises main compressor 1, oil-liquid separator 2, condenser 3, device for drying and filtering 24, liquid supply electromagnetic valve 25, choke valve 26 and shell-tube evaporator 7, described main compressor 1 is connecting the entrance of condenser 3 by oil-liquid separator 2, between condenser 3 outlets and shell-tube evaporator 7 entrances, runner is provided with device for drying and filtering 24, liquid supply electromagnetic valve 25 and choke valve 26, and housing evaporimeter 7 exports the entrance that is connecting main compressor 1 by heat exchanger 8.
Described oil-liquid separator 2 is provided with a loop with main compressor 1.
Described auxiliary compressor 9 is provided with the hygrosensor that obtains evaporating temperature, and hygrosensor is connecting the starting drive of auxiliary compressor 9.
Described auxiliary superheating system is provided with the adjusting device of dynamic adjustments flow.
Detailed description of the present utility model:
In native system when operation,, cold-producing medium is under the effect of main compressor 1, and the gaseous refrigerant that becomes HTHP enters condenser 3 through oil-liquid separator 2, carries out heat exchange and become the liquid refrigerant of normal temperature high voltage condenser 3 is inner with the cooling water recycling.Liquid supply electromagnetic valve 25 is opened, the liquid refrigerant that the liquid refrigerant of normal temperature high voltage becomes low-temp low-pressure through device for drying and filtering 24, liquid supply electromagnetic valve 25 and choke valve 6 enters shell-tube evaporator 7, the flow through heat of water of shell-tube evaporator 7 of absorption, the gaseous refrigerant that becomes low-temp low-pressure is got back to main compressor 1 by the outlet of shell-tube evaporator 7 heat exchanger of flowing through.Now the gaseous refrigerant of low-temp low-pressure is under the effect of main compressor 1, and the gaseous state refrigeration that becomes HTHP enters condenser 3 through oil-liquid separator 2, so circulation.
Oil-liquid separator 2 goes out with main compressor 1 to be connected flatly.Helical-lobe compressor relies on oil pressure to promote, and guiding valve is forward and backward movement in discharge chambe.Bearing in helical-lobe compressor needs stable oily flow Gong Give lubricated, sprays into oil in discharge chambe and can in compression chamber, form an oil film and increase the part heat producing in the efficiency of compressor absorption pressure compression process.Oil-liquid separator 2 can be isolated the lubricating oil wherein mixing from the gaseous refrigerant of HTHP, the oil that guarantees minimum enters in main compressor by loop band, should be noted that the temperature of lubricating oil simultaneously, it is a key factor that affects the bearing of compressor life-span, too high lubricating oil temperature can reduce oily viscosity, causes oil lubrication ability and heat absorption capacity to reduce.
Described auxiliary superheating system is arranged between shell-tube evaporator 7 and main compressor 1, shell-tube evaporator 7 outlets are connected with heat exchanger 8, the gaseous refrigerant of low-temp low-pressure out passes through heat exchanger 8 from shell-tube evaporator 7, auxiliary compressor 1 is provided with hygrosensor, obtain evaporating temperature by hygrosensor, trigger auxiliary compressor 9 and start.Open liquid supply electromagnetic valve 1, auxiliary compressor 9 starts provides power, and the gaseous state of HTHP passes into heat exchanger 8, and the refrigerant heats vaporization that is not transformed into gaseous state completely of heat exchanger 8, finally only has gaseous refrigerant to flow to main compressor 1 through heat exchanger 8.The refrigeration that does not change gaseous state completely enters auxiliary evaporator 10 through device for drying and filtering 1, liquid supply electromagnetic valve 12 and choke valve 1, and auxiliary evaporator 10 filters the refrigeration that does not change gaseous state completely, provides gaseous refrigerant to auxiliary compressor 9, so circulation.Auxiliary superheating system can guarantee the normal work of main compressor, enters main compressor 1 with the relatively simple direct ejector refrigeration agent of aided cooling mode of one.
In sum; those of ordinary skill in the art reads after the utility model file; make other various corresponding conversion scheme according to the technical solution of the utility model and technical conceive without creative mental labour, all belong to the scope that the utility model is protected.
Claims (5)
1. a worst cold case superheating system, comprise main refrigeration system and auxiliary superheating system, it is characterized in that: described auxiliary superheating system is in tandem in main refrigeration system shell-tube evaporator rear end, described auxiliary superheating system contains heat exchanger, auxiliary compressor, auxiliary evaporator, choke valve one, liquid supply electromagnetic valve one and device for drying and filtering one, the entrance of described auxiliary compressor is connecting auxiliary evaporator, outlet is connecting the entrance of heat exchanger, and the outlet of described heat exchanger is being connected auxiliary evaporator by choke valve one, liquid supply electromagnetic valve one and device for drying and filtering one.
2. a kind of worst cold case superheating system according to claim 1, it is characterized in that: described main refrigeration system comprises main compressor, oil-liquid separator, condenser, device for drying and filtering two, liquid supply electromagnetic valve two, choke valve two and shell-tube evaporator, described main compressor is connecting the entrance of condenser by oil-liquid separator, between condensator outlet and shell-tube evaporator entrance, runner is provided with device for drying and filtering two, liquid supply electromagnetic valve two and choke valve two, and housing evaporator outlet is connecting the entrance of main compressor by heat exchanger.
3. a kind of worst cold case superheating system according to claim 2, is characterized in that: described oil-liquid separator and main compressor are provided with a loop.
4. a kind of worst cold case superheating system according to claim 1, is characterized in that: described auxiliary compressor is provided with the hygrosensor that obtains evaporating temperature, and hygrosensor is connecting the starting drive of auxiliary compressor.
5. a kind of worst cold case superheating system according to claim 1, is characterized in that: described auxiliary superheating system is provided with the adjusting device of dynamic adjustments flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420034951.6U CN203687440U (en) | 2014-01-21 | 2014-01-21 | Low-temperature working condition overheating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420034951.6U CN203687440U (en) | 2014-01-21 | 2014-01-21 | Low-temperature working condition overheating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203687440U true CN203687440U (en) | 2014-07-02 |
Family
ID=51009329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420034951.6U Expired - Lifetime CN203687440U (en) | 2014-01-21 | 2014-01-21 | Low-temperature working condition overheating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203687440U (en) |
-
2014
- 2014-01-21 CN CN201420034951.6U patent/CN203687440U/en not_active Expired - Lifetime
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140702 |
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| CX01 | Expiry of patent term |