CN106642785B - A kind of injection refrigerating system and its operating method - Google Patents
A kind of injection refrigerating system and its operating method Download PDFInfo
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- CN106642785B CN106642785B CN201611003511.4A CN201611003511A CN106642785B CN 106642785 B CN106642785 B CN 106642785B CN 201611003511 A CN201611003511 A CN 201611003511A CN 106642785 B CN106642785 B CN 106642785B
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- storage device
- liquid storage
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Classifications
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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
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/08—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point using ejectors
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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
- F25B43/006—Accumulators
-
- 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
- F25B49/00—Arrangement or mounting of control or safety devices
Abstract
The present invention proposes injection refrigerating system and its operating method of a kind of intermittent duty, including generator, injector, condenser, cooler, the first liquid storage device, the second liquid storage device, third liquid storage device, the 4th liquid storage device, circulating pump, cooling pump, make-up valve and pressure-regulating valve etc..By arranging 4 liquid storage devices, the intermittent duty of injection refrigerating system is realized, operating condition is kept relatively stable when running injection refrigerating system, to guarantee the efficiency of operation, the low disadvantage of the average efficiency for avoiding injection refrigerating system from running in a wide range of operating conditions.
Description
Technical field
The present invention relates to Refrigeration Techniques, and in particular to a kind of injection refrigerating system and its operating method.
Background technique
Traditional injection refrigerating system is mainly made of injector, generator, evaporator, condenser and throttling set,
In, injector is most important component, injector mainly by nozzle, suction area, mixed zone and diffusion district's groups at.Ejector refrigeration is just
It is the fluid that the working fluid of the high pressure from generator is changed into high-speed motion using injector through nozzle, thus sucking
Area generates low pressure；Driving fluid is introduced in suction area after evaporator evaporation endothermic, and carries out with working fluid in mixed zone
Then energy exchange is discharged to condenser after diffusion area diffusion and carries out cooling condensation；Cool down condensed working media, and one
Divide Returning evaporimeter, a part enters evaporator through throttling set.
The time that ejector refrigeration technology occurs is more early, in the 1930s once in the air-conditioning refrigeration system of building
In obtain short-term extensive use, but since its efficiency is lower, soon replaced more efficient compression-type refrigerating system.
In recent years, becoming increasingly conspicuous with energy crisis and environmental problem, energy conservation and environmental protection become the common recognition of the whole mankind, ejector refrigeration because
It can be driven by low-grade heat sources such as solar energy, underground heat and waste heat, that moving component is few, system investments and maintenance cost are low etc. is many
More advantages become the research hotspot of domestic and international refrigeration air-conditioner again.
Currently, the research of ejector refrigeration technology is dedicated to improving the effect of injection refrigerating system by emulating with experimental study
Rate, it is main there are four research hotspot, first is that the design optimization of injector, second is that the selection and substitution of refrigeration working medium, third is that injection
Refrigeration system circulation form, fourth is that the operation of injection refrigerating system controls.
Injector is the core of entire injection refrigerating system, and internal mixed flow process is sufficiently complex, is related to ultrasound
The factors such as fast flowing, shock wave, turbulent closure scheme and two-phase flow, working mechanism is not yet very clear, so that the design of injector is excellent
It is larger to change difficulty.Numerous scholars successively use homalographic mixing, isobaric mixing, etc. momentum principles and Fluid Mechanics Computation
(CFD) method studies the design and the course of work of injector, it is already possible to design the efficiency under certain operating condition and more manage
The injector thought, but it is still lower in the average efficiency of wide condition range.
In order to improve efficiency of injection refrigerating system under the conditions of variable working condition, researcher, which takes, becomes geometry injection
The injection refrigerating system of device and multi-injector.Using the injection refrigerating system for becoming geometry injector, due to becoming geometry machine
A possibility that structure of the injector of structure is more complicated, not only increases input cost, and increases failure gives maintenance management
Bring difficulty.Using the injection refrigerating system of multi-injector, the use of multi-injector increases the complexity of system, improves throwing
Enter cost, the number of injector is more, and cost is higher, and when load is lower than the peak load that single injector can be handled
When, system is still within variable working condition operating condition.
Summary of the invention
For this purpose, the present invention propose it is a kind of can intermittent duty injection refrigerating system and its operating method, specifically pass through
Multiple liquid storage devices are configured, realize the intermittent duty of injection refrigerating system, so that the operating condition of injection refrigerating system be made to keep base
This stabilization avoids the acute variation of operating condition, improves the efficiency of injection refrigerating system.
Concrete scheme is as follows:
A kind of injection refrigerating system, including generator, injector, condenser, the first liquid storage device, the second liquid storage device, third
Liquid storage device, the 4th liquid storage device, circulating pump, cooling pump, cooler, pressure-regulating valve, make-up valve, refrigerant and master control set,
The generator, injector, condenser, the first liquid storage device, which pass sequentially through pipeline and be composed in series first circulation, to return
Road, the pressure-regulating valve are arranged on the pipeline that generator is connected with injector, and the circulating pump setting is in the first storage
On the pipeline that liquid device is connected with generator,
Second liquid storage device, third liquid storage device, the 4th liquid storage device, cooler pass sequentially through pipeline and are composed in series second
Circulation loop, the cooling pump are arranged on the pipeline that the second liquid storage device is connected with the 4th liquid storage device,
The third liquid storage device is respectively with the first liquid storage device and injector piping connection, and the make-up valve setting is first
On the pipeline that liquid storage device is connected with third liquid storage device, the refrigerant is filled in the generator, injector, condenser, cold
But in device, the first liquid storage device, the second liquid storage device, third liquid storage device, the 4th liquid storage device first circulation circuit and second circulation circuit,
The master control set is electrically connected to generator, condenser, circulating pump, cooling pump, cooler, pressure-regulating valve and make-up valve.
Further, part flow arrangement is equipped in first liquid storage device, so that refrigerant respectively enters generator and the
Three liquid storage devices.
Further, liquid level current-limiting apparatus is equipped in second liquid storage device.
Further, the liquid level current-limiting apparatus includes the first liquid level detection device and first flow control device, institute
It states the first liquid level detection device and first flow control device is electrically connected to master control set.
Further, the second liquid level detection device, temperature sensor and second flow are equipped in the third liquid storage device
Control device, second liquid level detection device, temperature sensor and second flow control device are electrically connected to master control set.
It further, further include warning device, the warning device is electrically connected to master control set.
A method of above-mentioned injection refrigerating system being operated, comprising steps of setting a liquid level in second liquid storage device
It is worth, the liquid level in the second liquid storage device enters third liquid storage device after reaching the level value set；And in the third liquid storage device
Highest level value, standard level value and minimum liquid level value are set respectively, when the liquid level of third liquid storage device is lower than minimum liquid level, injection
Refrigeration system shuts down, and when the liquid level of third liquid storage device is higher than highest liquid level, injection refrigerating system shuts down, and works as third
Between standard liquid level and highest liquid level, injection refrigerating system continues to run liquid storage device liquid level, is simultaneously emitted by cooler load
Too big alarm, when liquid storage device liquid level is between highest liquid level and minimum liquid level, and refrigerant temperature reaches requirement, by third
The refrigerant of liquid storage device is discharged to the 4th liquid storage device.
The present invention realizes the intermittent duty of injection refrigerating system, makes the fortune of injection refrigerating system by 4 liquid storage devices of arrangement
Row operating condition keeps relatively stable, to guarantee the efficiency of operation, avoids injection refrigerating system from running in a wide range of operating conditions flat
The shortcomings that equal low efficiency.
Detailed description of the invention
Fig. 1 is the schematic diagram of injection refrigerating system of the present invention.
Specific embodiment
To further illustrate that each embodiment, the present invention are provided with attached drawing.These attached drawings are that the invention discloses one of content
Point, mainly to illustrate embodiment, and the associated description of specification can be cooperated to explain the operation principles of embodiment.Cooperation ginseng
These contents are examined, those of ordinary skill in the art will be understood that other possible embodiments and advantages of the present invention.Now tie
Closing the drawings and specific embodiments, the present invention is further described.
In conjunction with Fig. 1, the system of the present embodiment by generator, injector, condenser, cooler, liquid storage device a, liquid storage device b,
Liquid storage device c, liquid storage device d, circulating pump, cooling pump, make-up valve, pressure-regulating valve, refrigerant (not shown) and master control set (do not show
It forms out).
In the present embodiment, generator, injector, condenser, liquid storage device a pass sequentially through pipeline and are composed in series first circulation time
Road, pressure-regulating valve are arranged on the pipeline that generator is connected with injector, and circulating pump setting is connected in liquid storage device a with generator
Pipeline on, liquid storage device b, liquid storage device c, liquid storage device d, cooler pass sequentially through pipeline and are composed in series second circulation circuit, cooling
Pump is arranged on the pipeline that liquid storage device b is connected with liquid storage device d, and liquid storage device c with liquid storage device a and injector piping connection, is mended respectively
Liquid valve is arranged on the pipeline that liquid storage device a is connected with liquid storage device c, and the refrigerant is filled in the generator, injector, cold
The first circulation circuit and second circulation circuit of condenser, cooler, liquid storage device a, liquid storage device b, liquid storage device c, liquid storage device d composition
Interior, master control set is electrically connected to generator, condenser, circulating pump, cooling pump, cooler, pressure-regulating valve and make-up valve.Liquid storage
It is equipped with part flow arrangement in device a, so that refrigerant respectively enters generator and liquid storage device c, is equipped with liquid level current limliting in liquid storage device b and fills
It sets, liquid level current-limiting apparatus includes the first liquid level detection device and first flow control device, the first liquid level detection device and first
Volume control device is electrically connected to master control set.Second flow control device is equipped in the liquid storage device c, the second liquid level is examined
It surveys device and temperature sensor, second flow control device, temperature sensor and the second liquid level detection device is electrically connected to lead
Control device.This system further includes warning device, and warning device is electrically connected to master control set.
The system of the present embodiment before runtime, sets the level set value x of liquid storage device b, the highest liquid of liquid storage device c first
Position y1, liquid storage device c standard liquid level y2 and liquid storage device c minimum liquid level y3, system run when, liquid refrigerant generator by
It is changed into the steam of high temperature and pressure after waste heat source heating, after pressure-regulating valve is adjusted to suitable pressure, as injector
Working media is mixed by the refrigerant vapour of injection with working media by injector and from liquid storage device c injection refrigerant vapour
After leave injector and enter condenser, the water condensation that is cooled is liquid and enters liquid storage device a, and the current divider in liquid storage device a is by liquid
Body is divided into two-way, is pumped back to generator through circulation all the way, and a-road-through crosses the refrigerant that make-up valve sprays into atomization into liquid storage device c,
The refrigerant of atomization after liquid storage device c interior suction thermal evaporation by injection to injector, and make under the refrigerant temperature in liquid storage device c
It drops, the temperature sensor in liquid storage device c detects refrigerant temperature, when temperature drops to set temperature, by liquid storage device c
From liquid storage device d is in addition drained into all the way, the refrigerant of liquid storage device d is pumped into after cooler exchanges heat by cooling interior refrigerant
Liquid level current-limiting apparatus in liquid storage device b, liquid storage device b is when the refrigerant of liquid storage device b is accumulated to level set value x, by liquid storage
The refrigerant of device b is sent into liquid storage device c, specifically liquid level current-limiting apparatus in the present embodiment include the first liquid level detection device and
First flow control device, the first liquid level detection device when the refrigerant accumulation for detecting liquid storage device b is to level set value x,
The refrigerant that first flow control device controls liquid storage device b is sent into liquid storage device c.
The liquid level of the second liquid level detection device detection liquid storage device c in liquid storage device c, when the liquid level of liquid storage device c is lower than minimum
When liquid level y3, master control system control injection refrigerating system shuts down；It is main when the liquid level of liquid storage device c is higher than highest liquid level y3
Control system control injection refrigerating system shuts down；When liquid storage device liquid level is located between standard liquid level y2 and highest liquid level y1, then
Injection refrigerating system continues to run, while issuing the too big alarm of cooler load by warning device；When liquid storage device liquid level position
The temperature of liquid refrigerant reaches between highest liquid level y1 and minimum liquid level y3, and in temperature sensor measurement liquid storage device c
It is required that the refrigerant of liquid storage device c is then discharged to liquid storage device d by second flow control device.
Although specifically showing and describing the present invention in conjunction with preferred embodiment, those skilled in the art should be bright
It is white, it is not departing from the spirit and scope of the present invention defined by the appended claims, it in the form and details can be right
The present invention makes a variety of changes, and is protection scope of the present invention.
Claims (7)
1. a kind of injection refrigerating system, including generator, injector, condenser, circulating pump, cooling pump, refrigerant, feature exist
In: it further include the first liquid storage device, the second liquid storage device, third liquid storage device, the 4th liquid storage device, cooler, pressure-regulating valve, make-up valve
And master control set,
The generator, injector, condenser, the first liquid storage device pass sequentially through pipeline and are composed in series first circulation circuit, institute
The pressure-regulating valve stated is arranged on the pipeline that generator is connected with injector, the described circulating pump setting the first liquid storage device with
On the connected pipeline of generator,
Second liquid storage device, third liquid storage device, the 4th liquid storage device, cooler pass sequentially through pipeline and are composed in series second circulation
Circuit, the cooling pump are arranged on the pipeline that the second liquid storage device is connected with the 4th liquid storage device,
The third liquid storage device is respectively with the first liquid storage device and injector piping connection, and the make-up valve setting is in the first liquid storage
On the pipeline that device is connected with third liquid storage device, the refrigerant fill in the generator, injector, condenser, cooler,
It is described in first liquid storage device, the second liquid storage device, third liquid storage device, the 4th liquid storage device, first circulation circuit and second circulation circuit
Master control set be electrically connected to generator, condenser, circulating pump, cooling pump, cooler, pressure-regulating valve and make-up valve.
2. injection refrigerating system according to claim 1, it is characterised in that: be equipped in first liquid storage device and shunt dress
It sets.
3. injection refrigerating system according to claim 1, it is characterised in that: be equipped with liquid level in second liquid storage device and limit
Flow device.
4. injection refrigerating system according to claim 3, it is characterised in that: the liquid level current-limiting apparatus includes the first liquid
Level detecting apparatus and first flow control device, first liquid level detection device are electrically connected to first flow control device
Master control set.
5. injection refrigerating system according to claim 1, it is characterised in that: be equipped with the second liquid in the third liquid storage device
Level detecting apparatus, temperature sensor and second flow control device, second liquid level detection device, temperature sensor and second
Volume control device is electrically connected to master control set.
6. injection refrigerating system according to claim 1, it is characterised in that: it further include warning device, the alarm dress
It sets and is electrically connected to master control set.
7. a kind of method for operating any injection refrigerating system of the claims 1 to 6, which is characterized in that comprising steps of
A level value is set in second liquid storage device, the liquid level in the second liquid storage device enters third storage after reaching the level value set
Liquid device；And highest level value, standard level value and minimum liquid level value are set respectively in the third liquid storage device, when third liquid storage
When the liquid level of device is lower than minimum liquid level, injection refrigerating system shuts down, when the liquid level of third liquid storage device is higher than highest liquid level,
Injection refrigerating system shuts down, when third liquid storage device liquid level is between standard liquid level and highest liquid level, injection refrigerating system
It continues to run, is simultaneously emitted by the too big alarm of cooler load, when liquid storage device liquid level is between highest liquid level and minimum liquid level,
And refrigerant temperature reaches requirement, and the refrigerant of third liquid storage device is discharged to the 4th liquid storage device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201611003511.4A CN106642785B (en) | 2016-11-15 | 2016-11-15 | A kind of injection refrigerating system and its operating method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611003511.4A CN106642785B (en) | 2016-11-15 | 2016-11-15 | A kind of injection refrigerating system and its operating method |
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| CN106642785A CN106642785A (en) | 2017-05-10 |
| CN106642785B true CN106642785B (en) | 2019-02-19 |
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| CN113007913A (en) * | 2019-12-20 | 2021-06-22 | 青岛海尔空调电子有限公司 | Water chilling unit and control method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1818509A (en) * | 2006-03-09 | 2006-08-16 | 西安交通大学 | Steam jetting refrigerating circulation system |
| CN2916521Y (en) * | 2006-06-23 | 2007-06-27 | 中南大学 | Ejector type refrigerating machine |
| CN101788204A (en) * | 2010-03-12 | 2010-07-28 | 大连海事大学 | Jet refrigerating machine and refrigerating method thereof |
| CN202547173U (en) * | 2012-04-19 | 2012-11-21 | 浙江大学宁波理工学院 | Auto-cascade jet-type refrigerator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4075530B2 (en) * | 2002-08-29 | 2008-04-16 | 株式会社デンソー | Refrigeration cycle |
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2016
- 2016-11-15 CN CN201611003511.4A patent/CN106642785B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1818509A (en) * | 2006-03-09 | 2006-08-16 | 西安交通大学 | Steam jetting refrigerating circulation system |
| CN2916521Y (en) * | 2006-06-23 | 2007-06-27 | 中南大学 | Ejector type refrigerating machine |
| CN101788204A (en) * | 2010-03-12 | 2010-07-28 | 大连海事大学 | Jet refrigerating machine and refrigerating method thereof |
| CN202547173U (en) * | 2012-04-19 | 2012-11-21 | 浙江大学宁波理工学院 | Auto-cascade jet-type refrigerator |
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