CN113566447A - Rapid crystal melting device for lithium bromide absorption type air conditioning unit and operation method - Google Patents
Rapid crystal melting device for lithium bromide absorption type air conditioning unit and operation method Download PDFInfo
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- CN113566447A CN113566447A CN202110920716.3A CN202110920716A CN113566447A CN 113566447 A CN113566447 A CN 113566447A CN 202110920716 A CN202110920716 A CN 202110920716A CN 113566447 A CN113566447 A CN 113566447A
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- lithium bromide
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- temperature regenerator
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- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 title claims abstract description 165
- 239000013078 crystal Substances 0.000 title claims abstract description 45
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 40
- 230000008018 melting Effects 0.000 title claims abstract description 37
- 238000002844 melting Methods 0.000 title claims abstract description 37
- 238000004378 air conditioning Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 48
- 239000003507 refrigerant Substances 0.000 claims abstract description 31
- 238000002425 crystallisation Methods 0.000 claims abstract description 12
- 230000008025 crystallization Effects 0.000 claims abstract description 12
- 239000006096 absorbing agent Substances 0.000 claims description 31
- 239000007788 liquid Substances 0.000 claims description 28
- 238000001816 cooling Methods 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 7
- 238000005057 refrigeration Methods 0.000 claims description 4
- 239000000498 cooling water Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 230000008016 vaporization Effects 0.000 claims description 3
- 238000009834 vaporization Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 230000009977 dual effect Effects 0.000 abstract 1
- 238000010977 unit operation Methods 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 73
- 230000009467 reduction Effects 0.000 description 3
- 230000003750 conditioning effect Effects 0.000 description 2
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
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
- F25B15/00—Sorption machines, plants or systems, operating continuously, e.g. absorption type
- F25B15/02—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas
- F25B15/06—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas the refrigerant being water vapour evaporated from a salt solution, e.g. lithium bromide
-
- 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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
-
- 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
- F25B49/04—Arrangement or mounting of control or safety devices for sorption type machines, plants or systems
- F25B49/043—Operating continuously
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Sorption Type Refrigeration Machines (AREA)
Abstract
The invention discloses a quick crystal melting device for a lithium bromide absorption type air conditioning unit and an operation method thereof. The refrigerant water is directly introduced into the concentrated solution output pipe by using the electromagnetic valve and the dual manual valves, so that the concentrated solution is effectively diluted, the crystallization is effectively dissolved, the smoothness of the unit operation is ensured, the cost is saved, the operation efficiency of the unit is ensured, and the use effect of the device is greatly improved.
Description
Technical Field
The invention relates to the technical field of refrigerators, in particular to a quick crystal melting device for a lithium bromide absorption type air conditioning unit and an operation method.
Background
A lithium bromide refrigerator, i.e. a lithium bromide absorption refrigerator, uses a lithium bromide aqueous solution as a working medium, wherein water is a refrigerant, and lithium bromide is an absorbent, which is called a bromine refrigerator for short.
The existing lithium bromide unit has the following defects: lithium bromide solution crystallization is one of the common trouble of lithium bromide absorption refrigerator, in lithium bromide absorption refrigerator operation process, if lithium bromide solution crystallization, light then influence the power of refrigerator, heavily lead to the unit to shut down, unit refrigeration performance descends, seriously influence user's air conditioning effect, bring very big inconvenience for the user, when the crystallization is comparatively serious, the automatic crystal melting pipe of unit can not make the unit crystallization dissolve under most circumstances, often need engineer's scene with the help of external condition, make crystallization position temperature rise or reduce solution concentration and handle, user's latency is long, the cost of labor is high, not only seriously influence user's air conditioning effect inconvenient, and bring very big inconvenience for the user.
Disclosure of Invention
The invention mainly aims to provide a quick crystal melting device for a lithium bromide absorption type air conditioning unit and an operation method, which can effectively solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a be used for lithium bromide absorption formula air conditioning unit to melt brilliant device fast, includes condenser, low temperature regenerator, evaporimeter, absorber, melts the brilliant pipe and high temperature regenerator, the output of condenser is connected with the input of evaporimeter, the concentrated solution output of low temperature regenerator is connected with the low temperature input of absorber, the low temperature regenerator is through melting brilliant pipe lug connection absorber, the concentrated solution output of low temperature regenerator is connected to the evaporimeter output, the output and the high temperature regenerator of absorber are connected, the input of low temperature regenerator is connected to the output of high temperature regenerator.
Preferably, a U-shaped pipe is arranged between the output end of the condenser and the input end of the evaporator; the water in the condenser flows into the evaporator more efficiently.
Preferably, the concentrated solution output end of the low-temperature regenerator is connected with the low-temperature input end of the absorber through a first pipeline, and a second absorption liquid pump and a low-temperature heat exchanger are sequentially installed in the first pipeline; the concentrated lithium bromide solution is conveniently subjected to efficient cold treatment.
Preferably, the output end of the evaporator is provided with a refrigerant pump, the output end of the refrigerant pump is connected with the first pipeline through a second pipeline, and an electromagnetic valve and a manual valve are sequentially arranged in the second pipeline; the refrigerant water in the evaporator is directly introduced into the low-temperature heat exchanger through the cooling machine pump, so that the concentration of the concentrated lithium bromide solution is reduced, crystals are dissolved, and the first pipeline is smooth.
Preferably, two groups of manual valves are arranged and are positioned on the left side and the right side of the electromagnetic valve; the two sets of manual valves avoid leakage of the second pipeline, and meanwhile, the electromagnetic valve is convenient to control, operate and maintain.
Preferably, a first absorption liquid pump is arranged between the output end of the absorber and the high-temperature regenerator; the dilute solution output by the absorber is more easily led into the high-temperature regenerator through the first absorption liquid pump.
Preferably, the output end of the high-temperature regenerator is connected with the input end of the low-temperature regenerator through a high-temperature heat exchanger; the dilute solution is heated more effectively, and the water in the solution is evaporated to obtain the concentrated solution.
An operation method for a lithium bromide absorption type air conditioning unit quick crystal melting device comprises the following steps:
the method comprises the following steps: after the lithium bromide solution is heated by high-temperature refrigerant steam of a high-temperature regenerator (15) in the low-temperature regenerator, water of the lithium bromide solution is continuously vaporized, the vaporized water vapor passes through a condenser, is cooled by cooling water and then is condensed into refrigerant water, and the refrigerant water enters an evaporator through a U-shaped pipe;
step two: meanwhile, the water of the lithium bromide solution in the low-temperature regenerator is continuously vaporized, the concentration of the solution is continuously increased, so that the concentrated solution flows out of the first pipeline and passes through the second absorption liquid pump and the low-temperature heat exchanger, the high-temperature concentrated lithium bromide solution is cooled and then is conveyed into the absorber;
step three: in the process of cooling the high-temperature concentrated lithium bromide solution, when the temperature is reduced, the solubility of lithium bromide in water is gradually reduced, so that a crystallization phenomenon is caused to block a low-temperature heat exchanger, a first pipeline is blocked, the liquid level of the concentrated lithium bromide solution in a low-temperature regenerator is raised, and after the high-temperature concentrated lithium bromide solution is flush with a melting crystal tube, the high-temperature concentrated lithium bromide solution directly flows in from the melting crystal tube;
step four: at the moment, an external temperature sensor detects that the temperature of the fused crystal tube rises sharply, the electromagnetic valves are controlled to be opened through an external controller, meanwhile, manual valves on the left side and the right side are manually opened, at the moment, a second pipeline is opened, refrigerant water formed in an evaporator is directly introduced into a blocked first pipeline along the opened second pipeline through a cold machine pump, at the moment, the refrigerant water flows into a low-temperature heat exchanger through a second absorption liquid pump to be mixed with a concentrated lithium bromide solution or crystallized crystals, the concentration of the solution is diluted, so that the crystals are dissolved, the low-temperature heat exchanger is unblocked, at the moment, the concentrated lithium bromide solution in the low-temperature regenerator can flow along the first pipeline again, and after the liquid level of the solution in the low-temperature regenerator is lowered to be lower than the tube opening of the fused crystal tube, the solution does not flow from the fused crystal tube any more;
step five: when water in the condenser flows into the low-pressure evaporator, the water is rapidly expanded and vaporized, a large amount of heat of refrigerant water in the evaporator is absorbed in the vaporization process, the purposes of cooling and refrigerating are achieved, meanwhile, low-temperature water vapor enters the absorber and is absorbed by concentrated lithium bromide solution introduced into the absorber, and the solubility of the concentrated lithium bromide solution is reduced;
step six: dilute solution is conveyed by a first absorption liquid pump to enter a high-temperature regenerator through a heat exchanger, the dilute lithium bromide solution is heated to evaporate steam, concentrated lithium bromide solution is formed again, the lithium bromide solution is subjected to heat treatment through the high-temperature heat exchanger, and the lithium bromide solution is introduced into the low-temperature regenerator again to react, so that the whole circulation operation is completed.
Compared with the prior art, the invention has the following beneficial effects: the refrigerant pump connecting pipe for dredging refrigerant water is independently connected with the first pipeline for circulating concentrated solution by using the added second pipeline, when the concentrated solution in the low-temperature regenerator flows to the low-temperature heat exchanger through the first pipeline, the low-temperature heat exchanger reduces the pressure and the temperature of the lithium bromide concentrated solution, crystallization phenomenon is generated due to the reduction of the solubility of the lithium bromide in water or the poor vacuum of a unit, the crystallization degree is more serious along with the continuous reduction of the temperature, the first pipeline is seriously blocked, the concentrated solution in the low-temperature regenerator directly flows through the melting tube when the liquid level of the concentrated solution rises, the temperature of the melting tube is sharply increased, the temperature of the melting tube is increased by sensing of an external temperature sensing device, a preset external controller is triggered to automatically open the electromagnetic valve of the second pipeline, and meanwhile, two groups of left and right manual valves for preventing leakage are directly opened manually, can carry the cryogen water that produces with the evaporation in the evaporimeter to the second pipeline of opening through cold pump, make cryogen water directly flow into in the first pipeline through the second absorption liquid pump with concentrated solution or crystal mixture, the concentration of effectual reduction solution, thereby make the crystallization dissolve fast, make first pipeline unblocked, can make the concentrated solution liquid level decline in the low temperature regenerator, make concentrated solution no longer from melting the brilliant pipe through making its temperature reduce, liquid level in the absorber rises simultaneously, can make refrigerating unit's refrigeration resume normal, this mechanism simple structure, and the cost is lower, automatic operation is realized to accessible external controller and inductor simultaneously, the result of use of equipment is improved.
Drawings
Fig. 1 is a flow chart illustrating the operation of a fast crystal melting device for a lithium bromide absorption air conditioning unit according to the present invention.
In the figure: 1. a condenser; 2. a low temperature regenerator; 3. a "U" shaped tube; 4. an evaporator; 5. a refrigerant pump; 6. an absorber; 7. a first pipeline; 8. a second absorption liquid pump; 9. a low temperature heat exchanger; 10. a fused crystal tube; 11. a second pipeline; 12. an electromagnetic valve; 13. a manual valve; 14. a first absorption liquid pump; 15. a high temperature regenerator; 16. a high temperature heat exchanger.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1, a fast crystal melting device for a lithium bromide absorption type air conditioning unit, includes a condenser 1, a low temperature regenerator 2, an evaporator 4, an absorber 6, a crystal melting tube 10, and a high temperature regenerator 15, an output end of the condenser 1 is connected with an input end of the evaporator 4, a concentrated solution output end of the low temperature regenerator 2 is connected with a low temperature input end of the absorber 6, the low temperature regenerator 2 is directly connected with the absorber 6 through the crystal melting tube 10, an output end of the evaporator 4 is connected with a concentrated solution output end of the low temperature regenerator 2, an output end of the absorber 6 is connected with the high temperature regenerator 15, and an output end of the high temperature regenerator 15 is connected with an input end of the low temperature regenerator 2.
Specifically, a U-shaped pipe 3 is arranged between the output end of the condenser 1 and the input end of the evaporator 4; the water in the condenser 1 flows into the evaporator 4 more efficiently.
Specifically, a concentrated solution output end of the low-temperature regenerator 2 is connected with a low-temperature input end of an absorber 6 through a first pipeline 7, and a second absorption liquid pump 8 and a low-temperature heat exchanger 9 are sequentially installed in the first pipeline 7; the concentrated lithium bromide solution is conveniently subjected to efficient cold treatment.
Specifically, the output end of the evaporator 4 is provided with a refrigerant pump 5, the output end of the refrigerant pump 5 is connected with the first pipeline 7 through a second pipeline 11, and an electromagnetic valve 12 and a manual valve 13 are sequentially arranged in the second pipeline 11; the refrigerant water in the evaporator 4 is directly introduced into the low-temperature heat exchanger 9 through the cooling pump 5, so that the concentration of the concentrated lithium bromide solution is reduced, crystals are dissolved, and the first pipeline 7 is unblocked.
Specifically, two sets of manual valves 13 are installed and located on the left and right sides of the electromagnetic valve 12; the two sets of manual valves 13 avoid leakage of the second line 11, while the solenoid valve 12 is more convenient to control and operate.
Specifically, a first absorption liquid pump 14 is installed between the output end of the absorber 6 and the high-temperature regenerator 15; the dilute solution output from the absorber 6 is more easily passed into the high-temperature regenerator 15 by the first absorption liquid pump 14.
Specifically, the output of the high temperature regenerator 15 is connected to the input of the low temperature regenerator 2 through a high temperature heat exchanger 16; the dilute solution is heated more effectively, and the water in the solution is evaporated to obtain the concentrated solution.
An operation method for a lithium bromide absorption type air conditioning unit quick crystal melting device comprises the following steps:
the method comprises the following steps: after the lithium bromide solution is heated by high-temperature refrigerant steam from a high-temperature regenerator (15) in a low-temperature regenerator 2, water of the lithium bromide solution is continuously vaporized, the vaporized water vapor passes through a condenser 1, is cooled by cooling water and then is condensed into refrigerant water, and the refrigerant water enters an evaporator 4 through a U-shaped pipe 3;
step two: meanwhile, the water of the lithium bromide solution in the low-temperature regenerator 2 is continuously vaporized, the concentration of the solution is continuously increased, so that the concentrated solution flows out of the first pipeline 7 and passes through the second absorption liquid pump 8 and the low-temperature heat exchanger 9, the high-temperature concentrated lithium bromide solution is cooled and then is conveyed into the absorber 6;
step three: in the process of cooling the high-temperature concentrated lithium bromide solution, when the temperature is reduced, the solubility of lithium bromide in water is gradually reduced, so that the low-temperature heat exchanger 9 is blocked due to crystallization, the first pipeline 7 is blocked, the liquid level of the concentrated lithium bromide solution in the low-temperature regenerator 2 is raised, and after the high-temperature concentrated lithium bromide solution is flush with the crystal melting tube 10, the high-temperature concentrated lithium bromide solution directly flows in from the crystal melting tube 10;
step four: at the moment, an external temperature sensor detects that the temperature of the melting crystal tube 10 rises sharply, an electromagnetic valve 12 is controlled to be opened through an external controller, manual valves 13 on the left side and the right side are manually opened, at the moment, a second pipeline 11 is opened, refrigerant water formed in an evaporator 4 is directly introduced into a blocked first pipeline 7 along the opened second pipeline 11 through a chiller pump 5, at the moment, the refrigerant water flows into a low-temperature heat exchanger 9 through a second absorption liquid pump 8 to be mixed with a concentrated lithium bromide solution or crystallized crystals, the concentration of the solution is diluted, the crystals are dissolved, the low-temperature heat exchanger 9 is unblocked, at the moment, the concentrated lithium bromide solution in the low-temperature regenerator 2 can flow along the first pipeline 7 again, and after the liquid level of the solution in the low-temperature regenerator 2 is lowered to be lower than the opening of the melting crystal tube 10, the solution does not flow from the melting crystal tube 10 any more;
step five: when water in the condenser 1 flows into the low-pressure evaporator 4, the water is rapidly expanded and vaporized, a large amount of heat of refrigerant water in the evaporator 4 is absorbed in the vaporization process, the purpose of cooling and refrigeration is achieved, meanwhile, low-temperature water vapor enters the absorber 6 and is absorbed by concentrated lithium bromide solution introduced into the absorber, and the solubility of the concentrated lithium bromide solution is reduced;
step six: the dilute solution is conveyed by the first absorption liquid pump 14 through the heat exchanger and enters the high-temperature regenerator 15, the dilute lithium bromide solution is heated to evaporate steam, the concentrated lithium bromide solution is formed again, the lithium bromide solution is subjected to heat treatment by the high-temperature heat exchanger 16 and is introduced into the low-temperature regenerator 2 again for reaction, and the whole circulation operation is completed.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides a be used for lithium bromide to absorb formula air conditioning unit and melt crystal device fast which characterized in that: including condenser (1), low temperature regenerator (2), evaporimeter (4), absorber (6), melt brilliant pipe (10) and high temperature regenerator (15), the output of condenser (1) is connected with the input of evaporimeter (4), the concentrated solution output of low temperature regenerator (2) is connected with the low temperature input of absorber (6), low temperature regenerator (2) are through melting brilliant pipe (10) lug connection absorber (6), the concentrated solution output of low temperature regenerator (2) is connected to evaporimeter (4) output, the output and the high temperature regenerator (15) of absorber (6) are connected, the input of low temperature regenerator (2) is connected to the output of high temperature regenerator (15).
2. The quick crystal melting device for the lithium bromide absorption air conditioning unit as claimed in claim 1, wherein: and a U-shaped pipe (3) is arranged between the output end of the condenser (1) and the input end of the evaporator (4).
3. The quick crystal melting device for the lithium bromide absorption air conditioning unit as claimed in claim 1, wherein: the concentrated solution output end of the low-temperature regenerator (2) is connected with the low-temperature input end of the absorber (6) through a first pipeline (7), and a second absorption liquid pump (8) and a low-temperature heat exchanger (9) are sequentially installed inside the first pipeline (7).
4. The quick crystal melting device for the lithium bromide absorption air conditioning unit as claimed in claim 1, wherein: the refrigerant pump (5) is installed at the output end of the evaporator (4), the output end of the refrigerant pump (5) is connected with the first pipeline (7) through the second pipeline (11), and the electromagnetic valve (12) and the manual valve (13) are sequentially installed inside the second pipeline (11).
5. The quick crystal melting device for the lithium bromide absorption air conditioning unit as claimed in claim 4, wherein: two sets of manual valves (13) are arranged and are positioned on the left side and the right side of the electromagnetic valve (12).
6. The quick crystal melting device for the lithium bromide absorption air conditioning unit as claimed in claim 1, wherein: and a first absorption liquid pump (14) is arranged between the output end of the absorber (6) and the high-temperature regenerator (15).
7. The quick crystal melting device for the lithium bromide absorption air conditioning unit as claimed in claim 1, wherein: the output end of the high-temperature regenerator (15) is connected with the input end of the low-temperature regenerator (2) through a high-temperature heat exchanger (16).
8. An operation method of a fast crystal melting device for a lithium bromide absorption air conditioning unit according to any one of claims 1 to 7, characterized in that: the method comprises the following steps:
the method comprises the following steps: after the lithium bromide solution is heated by high-temperature refrigerant steam of a high-temperature regenerator (15) in a low-temperature regenerator (2), water of the lithium bromide solution is continuously vaporized, the vaporized water vapor passes through a condenser (1), is cooled by cooling water and then is condensed into refrigerant water, and the refrigerant water enters an evaporator (4) through a U-shaped pipe (3);
step two: meanwhile, the water of the lithium bromide solution in the low-temperature regenerator (2) is continuously vaporized, the concentration of the solution is continuously increased, so that the concentrated solution flows out of the first pipeline (7) and passes through the second absorption liquid pump (8) and the low-temperature heat exchanger (9), the high-temperature concentrated lithium bromide solution is cooled and then is conveyed into the absorber (6);
step three: in the process of cooling high-temperature concentrated lithium bromide solution, when the temperature is reduced, the solubility of lithium bromide in water is gradually reduced, so that a crystallization phenomenon is caused to block a low-temperature heat exchanger (9), a first pipeline (7) is blocked, the liquid level of the concentrated lithium bromide solution in a low-temperature regenerator (2) is raised, and after the high-temperature concentrated lithium bromide solution is flush with a melting crystal pipe (10), the high-temperature concentrated lithium bromide solution directly flows into the melting crystal pipe (10);
step four: at the moment, an external temperature sensor detects that the temperature of the melting crystal pipe (10) rises sharply, an electromagnetic valve (12) is controlled to be opened through an external controller, manual valves (13) on the left side and the right side are manually opened, at the moment, a second pipeline (11) is opened, refrigerant water formed in an evaporator (4) is directly introduced into a blocked first pipeline (7) along the opened second pipeline (11) through a chiller pump (5), at the moment, the refrigerant water flows into a low-temperature heat exchanger (9) through a second absorption liquid pump (8) to be mixed with a concentrated lithium bromide solution or crystallized crystals, the concentration of the solution is diluted, so that the crystals are dissolved, the low-temperature heat exchanger (9) is unblocked, at the moment, the concentrated lithium bromide solution in the low-temperature regenerator (2) can flow along the first pipeline (7) again, and the solution level in the low-temperature regenerator (2) is lowered to be lower than the opening of the melting crystal pipe (10), the solution does not flow through the melting crystal tube (10);
step five: when water in the condenser (1) flows into the low-pressure evaporator (4), the water is rapidly expanded and vaporized, a large amount of heat of refrigerant water in the evaporator (4) is absorbed in the vaporization process, the purposes of cooling and refrigeration are achieved, meanwhile, low-temperature water vapor enters the absorber (6) and is absorbed by concentrated lithium bromide solution introduced into the absorber, and the solubility of the concentrated lithium bromide solution is reduced;
step six: dilute solution is conveyed into a high-temperature regenerator (15) through a heat exchanger by a first absorption liquid pump (14), then the dilute lithium bromide solution is heated to evaporate steam, intermediate-concentration lithium bromide solution is formed again, the intermediate-concentration lithium bromide solution is subjected to heat treatment by a high-temperature heat exchanger (16), and the intermediate-concentration lithium bromide solution is introduced into a low-temperature regenerator (2) again to react to form concentrated solution, so that the whole circulation operation is completed.
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| CN202110920716.3A CN113566447A (en) | 2021-08-11 | 2021-08-11 | Rapid crystal melting device for lithium bromide absorption type air conditioning unit and operation method |
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| CN202110920716.3A CN113566447A (en) | 2021-08-11 | 2021-08-11 | Rapid crystal melting device for lithium bromide absorption type air conditioning unit and operation method |
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| JP2001099515A (en) * | 1999-09-29 | 2001-04-13 | Hitachi Building Systems Co Ltd | Method and device for switching cooling/heating mode in absorption type water cooling and heating machine |
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| JP2010096374A (en) * | 2008-10-15 | 2010-04-30 | Ebara Refrigeration Equipment & Systems Co Ltd | Absorption heat pump |
| CN101846415A (en) * | 2010-06-02 | 2010-09-29 | 大连三洋制冷有限公司 | Lithium bromide absorption second class heat pump unit device and control method thereof |
| US20210148612A1 (en) * | 2017-06-20 | 2021-05-20 | Lg Electronics Inc. | Absorption chiller |
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2021
- 2021-08-11 CN CN202110920716.3A patent/CN113566447A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001099515A (en) * | 1999-09-29 | 2001-04-13 | Hitachi Building Systems Co Ltd | Method and device for switching cooling/heating mode in absorption type water cooling and heating machine |
| CN1632421A (en) * | 2004-12-31 | 2005-06-29 | 江苏双良空调设备股份有限公司 | Lithium brominate absorptive-type refrigerator with absorption solution regulation and antifreeze device |
| JP2010096374A (en) * | 2008-10-15 | 2010-04-30 | Ebara Refrigeration Equipment & Systems Co Ltd | Absorption heat pump |
| CN101846415A (en) * | 2010-06-02 | 2010-09-29 | 大连三洋制冷有限公司 | Lithium bromide absorption second class heat pump unit device and control method thereof |
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Application publication date: 20211029 |