CN104121746B - A kind of quick-freezing refrigeration system and quick-freezing refrigerating method - Google Patents
A kind of quick-freezing refrigeration system and quick-freezing refrigerating method Download PDFInfo
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- CN104121746B CN104121746B CN201410330363.1A CN201410330363A CN104121746B CN 104121746 B CN104121746 B CN 104121746B CN 201410330363 A CN201410330363 A CN 201410330363A CN 104121746 B CN104121746 B CN 104121746B
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Abstract
The present invention proposes a kind of quick-freezing refrigeration system, including: super low temperature refrigeration unit, condenser and quick freezing process device；First outfan of super low temperature refrigeration unit is connected with the input of condenser by gas refrigerant conveyance conduit, and the outfan of condenser is connected with the first input end of super low temperature refrigeration unit by liquid refrigerant conveyance conduit；Second outfan of super low temperature refrigeration unit is connected with the input of quick freezing process device by refrigerating medium conveyance conduit, and the outfan of quick freezing process device is connected with the second input of super low temperature refrigeration unit by refrigerating medium back liquid pipeline；Refrigerating medium back liquid pipeline is provided with cryopump.Beneficial effects of the present invention is as follows: energy-conservation, safety, automaticity are high, later maintenance workload is little, expense is low, can realize freezing at a distance, and quick-freezing effect is obvious, and construction is simple.
Description
Technical field
The present invention relates to quick-freezing refrigeration plant and method and technology field, particularly relate to a kind of quick-freezing refrigeration system and
Quick-freezing refrigerating method.
Background technology
Fast food freezing system is mainly made up of low-temperature receiver and quick freezing process device two parts.Low-temperature receiver refers mainly to refrigeration system
System, quick freezing process device refers mainly to freeze tunnel and quick freezing repository, and freeze tunnel includes guipure instant freezer, flat board
Instant freezer and screw fast refreezer etc., quick freezing repository refers mainly to be provided with the low temperature of the equipment such as shelf comb, air-cooler
Storehouse.
At present, the refrigeration system of conventional food instant-frozen system mainly uses ammonia, freon as refrigeration on the market
Agent, utilizes cold-producing medium direct evaporation mode to realize refrigeration.As it is shown in figure 1, incited somebody to action by compressor and condenser
Refrigerant gas compression condensation becomes liquid, and liquid refrigerant passes sequentially through reservoir, circulation barrel, liquid pump etc. again
The heat exchanger within quick freezing process device delivered to by liquid refrigerant conveying equipment, and liquid refrigerant is in heat exchange
After carrying out heat exchange with food in device, sweat cooling becomes gas rapidly, is then drawn back by compressor；Draw back
Gas refrigerant again compressed, so circulate, the food being positioned at quick freezing process device is lowered the temperature rapidly
Freeze, thus reach deep frozen food and food fresh keeping purpose.
The shortcoming of above-mentioned conventional refrigeration is as follows:
Although ammonia is as a kind of outstanding cold-producing medium, it is widely used in food product refrigeration manufacture field, but ammonia
Belonging to a kind of hazardous chemical, it is inflammable, explosive, poisonous.Equipment that ammonia refrigeration system is used, pipeline
Belong to pressure vessel category, to device fabrication, installation quality, operate, the aspect such as maintenance, country has
The strictest regulation.Usually owing to misoperation, ageing equipment, installation quality be defective etc., factor is made
Become NH_3 leakage, cause substantial amounts of casualties and property loss.
Although freon is a kind of safe cold-producing medium, but itself refrigerating effect per unit swept volume is much smaller compared with ammonia,
More so consuming energy, relatively costly, relatively big on the impact of quick freezing process speed, so in quick-freezing plant seldom
Use.
Owing to requiring higher to pressure pipeline, therefore later period maintenance process workload is relatively big, costly；Separately
Outward, during for refrigeration unit distance quick freezing process device farther out, ammonia, the resistance of fluorine refrigeration piping increase,
Refrigerating efficiency can be greatly reduced.
Therefore, in the urgent need to a kind of safe, efficient cold-producing medium and refrigeration system.
Summary of the invention
The present invention proposes a kind of quick-freezing refrigeration system and quick-freezing refrigerating method, solves refrigeration system in prior art
The problem that system security performance is low.
The technical scheme is that and be achieved in that:
A kind of quick-freezing refrigeration system, including: super low temperature refrigeration unit, condenser and quick freezing process device；Institute
State first outfan input by gas refrigerant conveyance conduit with described condenser of super low temperature refrigeration unit
End connects, and the outfan of described condenser is by liquid refrigerant conveyance conduit and described super low temperature refrigeration unit
First input end connect；Second outfan of described super low temperature refrigeration unit by refrigerating medium conveyance conduit with
The input of described quick freezing process device connects, and the outfan of described quick freezing process device returns liquid by refrigerating medium
Pipeline is connected with the second input of described super low temperature refrigeration unit；Described refrigerating medium back liquid pipeline is provided with low
Temperature pump.
As preferably, the model of described super low temperature refrigeration unit is FDCWSDK89.
As preferably, described refrigerating medium is acylate solution, ternary mixed solution or KF-k1 aliphatic category
Organic substance.
As preferably, described cold-producing medium is R23, R22 or R404A cold-producing medium.
As preferably, described refrigerating medium conveyance conduit and refrigerating medium back liquid pipeline all use low temperature resistant seamless steel pipe,
Stainless steel soft connects pipe fitting and welding steel valve assembles.
A kind of quick-freezing refrigerating method of quick-freezing refrigeration system, its method step is as follows:
(1) low temperature refrigerating medium is produced
The compressor of super low temperature refrigeration unit is by after the refrigerant compression of gas form, defeated by gas refrigerant
Sending pipeline to flow to condenser, the cold-producing medium of gas form is condensed into the cold-producing medium of liquid form by condenser,
Then be passed back to the vaporizer of super low temperature refrigeration unit by liquid refrigerant conveyance conduit, liquid refrigerant exists
After carrying out heat exchange with refrigerating medium in the vaporizer of super low temperature refrigeration unit, rapid sweat cooling becomes gas,
The cold-producing medium of gas form by the compressor compresses of super low temperature refrigeration unit, such iterative cycles, reaches again
Constantly produce the purpose of low temperature refrigerating medium；
(2) quick frozen food
Through the low temperature refrigerating medium that super low temperature refrigeration unit prepares, it is delivered to quick-freezing by refrigerating medium conveyance conduit and adds
Frock is put, refrigerating medium in heat exchanger with after the food of quick-freezing carries out heat exchange heat up, after intensification
Refrigerating medium is admitted to super low temperature refrigeration unit under the effect of cryopump and is again cooled, such iterative cycles,
Reach the purpose of quick frozen food.
The invention have the benefit that
By using super low temperature refrigeration unit to replace traditional single-stage, single machine compression with double stage refrigeration unit, energy-conservation
Effect is greatly reinforced.
Using indirect cooling system to replace direct cooling system, refrigerating medium replaces ammonia, fluorinated refrigerant, owing to carrying
Cryogen itself is nontoxic, there is not inflammable and explosive equivalent risk, and operating pressure is low in system pipeline, it is not easy to
Leakage, is the most easily found even if revealing, and security reliability is greatly increased.
By using super low temperature refrigeration unit to replace conventional compression refrigeration unit, automaticity is high, it is easy to behaviour
Make, be greatly saved human cost, a key startup-shutdown can be realized, various service datas, warning in running
Information, fault message all centralized displaying on robot control system(RCS) touch screen；Various defencive functions are complete, all valves
Part one is adapted and qualified substantially need not again regulate, and does not haves maloperation；It is less demanding for operator,
Can learn through simple training, and without staff on duty.
Owing to using common pipe to replace pressure pipeline, later maintenance workload is little, expense is low；The most right
Refrigeration unit carries out regular repair and maintenance, and the groundwork of repair and maintenance is changed oil exactly, and refrigeration unit consumption of lubricating oil is very
Little, cost is the lowest.
Can realize freezing at a distance, for refrigeration system distant with quick freezing process device in the case of, ammonia,
Fluorine refrigeration system, due to the increase of the resistance of ducting, causes refrigerating efficiency to decline, and the present invention has clear superiority,
Only need to improve low temperature pump lift.
The temperature of refrigerating medium can be down to the evaporating temperature of direct evaporation system by super low temperature refrigeration unit, the lowest
In this temperature, and the refrigerating capacity of refrigeration unit is better than direct evaporation system, its quick-freezing effect and ammonia refrigeration system
Closely, it is better than freon refrigeration system.
The capital equipment of system of the present invention all completes test in factory, directly carries out pipeline even after showing up
Connect and can come into operation；System pipeline is because operating pressure is the lowest and pumped (conveying) medium is nontoxic, so this pipeline
System is not belonging to pressure pipeline category, installs formality and the method for inspection is all greatly simplified, easy construction.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to enforcement
In example or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that, describe below
In accompanying drawing be only some embodiments of the present invention, for those of ordinary skill in the art, do not paying
On the premise of going out creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structured flowchart of tradition quick-freezing refrigeration system in background technology；
Fig. 2 is the structured flowchart of quick-freezing refrigeration system of the present invention；
In figure:
1, gas refrigerant conveyance conduit, 2, liquid refrigerant conveyance conduit, 3, refrigerating medium conveyance conduit,
4, refrigerating medium back liquid pipeline, 5, cryopump.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearly
Chu, be fully described by, it is clear that described embodiment be only a part of embodiment of the present invention rather than
Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creation
The every other embodiment obtained under property work premise, broadly falls into the scope of protection of the invention.
Embodiment as shown in Figure 2 understands, a kind of quick-freezing refrigeration system of the present invention, including: ultralow
Temperature refrigeration unit, condenser and quick freezing process device；First outfan of super low temperature refrigeration unit passes through gas
Conveying pipe of refrigerant road 1 is connected with the input of condenser, and the outfan of condenser is defeated by liquid refrigerant
Pipeline 2 is sent to be connected with the first input end of super low temperature refrigeration unit；Second outfan of super low temperature refrigeration unit
It is connected by the input of refrigerating medium conveyance conduit 3 with quick freezing process device, the outfan of quick freezing process device
It is connected with the second input of super low temperature refrigeration unit by refrigerating medium back liquid pipeline 4；Refrigerating medium back liquid pipeline
It is provided with cryopump 5.
The model of above-mentioned super low temperature refrigeration unit is FDCWSDK89.Cryopump 5 uses cryogen to carry
Pump, main material and parts all use low temperature resistant design.
By using super low temperature refrigeration unit to replace traditional single-stage, single machine compression with double stage refrigeration unit, energy-conservation
Effect is greatly reinforced.Automaticity is high, it is easy to operation, is greatly saved human cost, can realize a key and open
Shutting down, in running, various service datas, warning message, fault message are all on robot control system(RCS) touch screen
Centralized displaying；Various defencive functions are complete, and all valve members one are adapted qualified substantially need not again regulation, no
There will be maloperation；Less demanding for operator, can learn through simple training, and without special messenger
On duty.
Above-mentioned refrigerating medium is that acylate solution, ternary mixed solution or KF-k1 aliphatic category Organic substance etc. have
Machine thing, has that freezing point is low, good fluidity, and specific heat is big, to features such as metal erosion are little.
Refrigerating medium is used to replace ammonia, fluorinated refrigerant, owing to refrigerating medium itself is nontoxic, it is inflammable and explosive not exist
Risk, and operating pressure is low in system pipeline, it is not easy to leakage, more safe and reliable.Use and tradition
The refrigerating medium that cold-producing medium direct evaporation system temperature is close, and the refrigerating capacity of refrigeration unit is better than direct evaporation system
System, therefore its quick-freezing effect with ammonia refrigeration system closely, is better than freon refrigeration system, quick-freezing effect
Substantially.
Above-mentioned cold-producing medium is R23, R22 or R404A cold-producing medium.
Above-mentioned refrigerating medium conveyance conduit and refrigerating medium back liquid pipeline all use low temperature resistant seamless steel pipe, stainless steel soft
Connect pipe fitting and welding steel valve assembles.
Owing to using common pipe to replace pressure pipeline, later maintenance workload is little, expense is low；The most right
Refrigeration unit carries out regular repair and maintenance, and the groundwork of repair and maintenance is changed oil exactly, and refrigeration unit consumption of lubricating oil is very
Little, cost is the lowest.
The quick-freezing refrigerating method of above-mentioned quick-freezing refrigeration system, its method step is as follows:
(1) low temperature refrigerating medium is produced
The compressor of super low temperature refrigeration unit is by after the refrigerant compression of gas form, defeated by gas refrigerant
Sending pipeline to flow to condenser, the cold-producing medium of gas form is condensed into the cold-producing medium of liquid form by condenser,
Then be passed back to the vaporizer of super low temperature refrigeration unit by liquid refrigerant conveyance conduit, liquid refrigerant exists
After carrying out heat exchange with refrigerating medium in the vaporizer of super low temperature refrigeration unit, rapid sweat cooling becomes gas,
Now refrigerant temperature is lowered；Then the cold-producing medium of gas form is again by the compression of super low temperature refrigeration unit
Machine compresses, and such iterative cycles reaches constantly to produce the purpose of low temperature refrigerating medium；
(2) quick frozen food
Through the low temperature refrigerating medium that super low temperature refrigeration unit prepares, it is delivered to quick-freezing by refrigerating medium conveyance conduit and adds
Frock is put, refrigerating medium in heat exchanger with after the food of quick-freezing carries out heat exchange heat up, after intensification
Refrigerating medium is admitted to super low temperature refrigeration unit under the effect of cryopump and is again cooled, such iterative cycles,
Reach the purpose of quick frozen food.
In sum, the present invention can realize freezing at a distance, for refrigeration system and quick freezing process device distance
Situation farther out, ammonia, fluorine refrigeration system, due to the increase of the resistance of ducting, cause refrigerating efficiency to decline, and basis
Invention has clear superiority, it is only necessary to improve low temperature pump lift.
The capital equipment of system of the present invention all completes test in factory, directly carries out pipeline even after showing up
Connect and can come into operation；System pipeline is because operating pressure is the lowest and pumped (conveying) medium is not belonging to poisonous, inflammable and explosive
Category, so this pipe-line system is not belonging to pressure pipeline category, installs formality and the method for inspection is all greatly simplified,
Easy construction.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all at this
Within bright spirit and principle, any modification, equivalent substitution and improvement etc. made, should be included in this
Within bright protection domain.
Claims (5)
1. a quick-freezing refrigeration system, it is characterised in that including: super low temperature refrigeration unit, condenser and speed
Freeze processing unit (plant)；First outfan of described super low temperature refrigeration unit passes through gas refrigerant conveyance conduit and institute
The input stating condenser connects, and the outfan of described condenser passes through liquid refrigerant conveyance conduit with described
The first input end of super low temperature refrigeration unit connects；Second outfan of described super low temperature refrigeration unit is by carrying
Cryogen conveyance conduit is connected with the input of described quick freezing process device, the outfan of described quick freezing process device
It is connected by the second input of refrigerating medium back liquid pipeline with described super low temperature refrigeration unit；Described refrigerating medium returns
Liquid pipeline is provided with cryopump, and the model of described super low temperature refrigeration unit is FDCWSDK89；Ultralow temperature system
The compressor of cold group, by after the refrigerant compression of gas form, is flowed to by gas refrigerant conveyance conduit
Condenser, the cold-producing medium of gas form is condensed into the cold-producing medium of liquid form, then passes through liquid by condenser
Conveying pipe of refrigerant road is passed back to the vaporizer of super low temperature refrigeration unit, and liquid refrigerant is at ultra-low temperature refrigerating device
After carrying out heat exchange with refrigerating medium in the vaporizer of group, rapid sweat cooling becomes gas, now refrigerating medium
Temperature is lowered；Then the cold-producing medium of gas form is again by the compressor compresses of super low temperature refrigeration unit, as
This iterative cycles.
A kind of quick-freezing refrigeration system the most according to claim 1, it is characterised in that described refrigerating medium is
Acylate solution, ternary mixed solution or KF-k1 aliphatic category Organic substance.
A kind of quick-freezing refrigeration system the most according to claim 1, it is characterised in that described cold-producing medium is
R23, R22 or R404A cold-producing medium.
A kind of quick-freezing refrigeration system the most according to claim 1, it is characterised in that described refrigerating medium is defeated
Pipeline and refrigerating medium back liquid pipeline is sent all to use low temperature resistant seamless steel pipe, stainless steel soft to connect pipe fitting and welding steel
Valve processed assembles.
5. the quick-freezing refrigerating method of the quick-freezing refrigeration system described in a claim 1, it is characterised in that its
Method step is as follows:
(1) low temperature refrigerating medium is produced
The compressor of super low temperature refrigeration unit is by after the refrigerant compression of gas form, defeated by gas refrigerant
Sending pipeline to flow to condenser, the cold-producing medium of gas form is condensed into the cold-producing medium of liquid form by condenser,
Then be passed back to the vaporizer of super low temperature refrigeration unit by liquid refrigerant conveyance conduit, liquid refrigerant exists
After carrying out heat exchange with refrigerating medium in the vaporizer of super low temperature refrigeration unit, rapid sweat cooling becomes gas,
The cold-producing medium of gas form by the compressor compresses of super low temperature refrigeration unit, such iterative cycles, reaches again
Constantly produce the purpose of low temperature refrigerating medium；
(2) quick frozen food
Through the low temperature refrigerating medium that super low temperature refrigeration unit prepares, it is delivered to quick-freezing by refrigerating medium conveyance conduit and adds
Frock is put, refrigerating medium in heat exchanger with after the food of quick-freezing carries out heat exchange heat up, after intensification
Refrigerating medium is admitted to super low temperature refrigeration unit under the effect of cryopump and is again cooled, such iterative cycles,
Reach the purpose of quick frozen food.
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| CN201410330363.1A CN104121746B (en) | 2014-07-11 | 2014-07-11 | A kind of quick-freezing refrigeration system and quick-freezing refrigerating method |
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| CN201410330363.1A CN104121746B (en) | 2014-07-11 | 2014-07-11 | A kind of quick-freezing refrigeration system and quick-freezing refrigerating method |
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| CN104676933A (en) * | 2015-01-19 | 2015-06-03 | 合肥华凌股份有限公司 | Refrigerating equipment |
| CN109539671B (en) * | 2018-10-22 | 2024-04-16 | 山前（珠海）科技有限公司 | Refrigerating system |
| CN109566687A (en) * | 2018-12-24 | 2019-04-05 | 天津市职业大学 | Quick-frozen particle Flour product is made into one machine |
| CN115727580B (en) * | 2022-11-28 | 2023-10-24 | 江苏拓米洛高端装备股份有限公司 | Control method and device of refrigerating system and refrigerating system |
| CN117168080B (en) * | 2023-10-30 | 2024-02-02 | 南通百源制冷设备有限公司 | Energy-saving spiral instant freezer state control method |
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| DE19511903C2 (en) * | 1995-03-31 | 1997-05-07 | Miwe Michael Wenz Gmbh | Process and device for tempering food |
| CN2783218Y (en) * | 2004-12-28 | 2006-05-24 | 袁卫安 | Single unit tandem superlow temperature refrigerator set |
| CN202614579U (en) * | 2012-05-21 | 2012-12-19 | 中国人民解放军第二军医大学 | Ultralow-temperature quick freezing device |
| CN204006913U (en) * | 2014-07-11 | 2014-12-10 | 石家庄久鼎制冷空调设备有限公司 | A kind of quick-frozen refrigeration system |
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