CN110173928B - Direct-fired lithium bromide absorption heat pump unit with double-effect refrigeration function - Google Patents
Direct-fired lithium bromide absorption heat pump unit with double-effect refrigeration function Download PDFInfo
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- CN110173928B CN110173928B CN201910546931.4A CN201910546931A CN110173928B CN 110173928 B CN110173928 B CN 110173928B CN 201910546931 A CN201910546931 A CN 201910546931A CN 110173928 B CN110173928 B CN 110173928B
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- condenser
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- absorber
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- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 title claims abstract description 54
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 27
- 238000005057 refrigeration Methods 0.000 title claims abstract description 25
- 239000006096 absorbing agent Substances 0.000 claims abstract description 69
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 54
- 239000007788 liquid Substances 0.000 claims description 22
- 239000000498 cooling water Substances 0.000 claims description 14
- 238000001704 evaporation Methods 0.000 claims description 10
- 230000008020 evaporation Effects 0.000 claims description 10
- 238000000926 separation method Methods 0.000 claims description 3
- 239000002826 coolant Substances 0.000 claims 1
- 239000003507 refrigerant Substances 0.000 abstract description 12
- 238000010586 diagram Methods 0.000 description 4
- 239000002918 waste heat Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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
- F25B33/00—Boilers; Analysers; Rectifiers
-
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
-
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
-
- 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
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/62—Absorption based systems
Landscapes
- 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)
- Power Engineering (AREA)
- Sorption Type Refrigeration Machines (AREA)
Abstract
The invention relates to a direct-fired lithium bromide absorption heat pump unit with a double-effect refrigeration function, which comprises an evaporator, an absorber, a low-pressure generator, a refrigerant pump, a first direct-fired generator, a second direct-fired generator, a first condenser, a second condenser, a first solution heat exchanger, a second solution heat exchanger, a first solution pump, a second solution pump, a first solution switching valve, a second solution switching valve, pipelines for connecting all parts and the like. The unit can perform heat supply operation according to the working principle of the direct-fired single-effect lithium bromide absorption heat pump unit, can perform refrigeration operation according to the working principle of the direct-fired double-effect lithium bromide absorption water chilling unit, can be used for one machine, provides heat supply and refrigeration equipment for places with application conditions, reduces equipment investment cost and saves equipment occupied space.
Description
Technical Field
The invention relates to a lithium bromide absorption type heat supply and refrigeration unit. Belongs to the technical field of air conditioning equipment.
Background
As shown in fig. 1, a conventional direct-fired single-effect lithium bromide absorption heat pump unit is composed of an evaporator 3, an absorber 1, a direct-fired generator 48, a condenser 49, a solution heat exchanger 46, a solution pump 45, a refrigerant pump 2, a control system (not shown in the figure), and pipes and valves connecting the respective components, wherein each pipe includes an absorber water outlet pipe 38, an evaporator water outlet pipe 39, an evaporator water inlet pipe 40, an absorber water inlet pipe 43 and a condenser water outlet pipe 50. When the unit is in operation, the heat generated by the combustion of fuel (fuel gas and fuel oil) by the burner 47 arranged on the direct-fired generator 48 is taken as compensation heat energy, the heat of the waste heat source hot water entering and exiting the evaporator 3 is recovered, and hot water for process or building heating with the temperature higher than the temperature of the waste heat source hot water is externally provided, so that the unit is mainly applied to places with both low-temperature heat sources and medium-temperature heat supply requirements. The unit can only perform heat supply operation according to the working principle of the direct-fired single-effect first-class lithium bromide absorption heat pump unit, and has no refrigeration function.
Disclosure of Invention
The invention aims to overcome the defects and provide the direct-fired lithium bromide absorption heat pump unit with the double-effect refrigeration function, and by additionally arranging the solution heat exchanger, the direct-fired generator, the low-pressure generator, the condenser, the solution switching valve and the cooling water switching valve on the basis of the traditional direct-fired single-effect lithium bromide absorption heat pump unit, the unit can perform heat supply operation according to the working principle of the direct-fired single-effect lithium bromide absorption heat pump unit and can perform refrigeration operation according to the working principle of the direct-fired double-effect lithium bromide absorption water chilling unit, can be used for one machine, provides heat supply and refrigeration equipment for places with application conditions, reduces equipment investment cost and saves equipment occupied space.
The purpose of the invention is realized in the following way:
the direct-fired lithium bromide absorption heat pump unit with the double-effect refrigeration function comprises an evaporator, an absorber, a direct-fired generator, a low-pressure generator, a condenser, a solution heat exchanger, a solution pump and a refrigerant pump, wherein the direct-fired generator comprises a first direct-fired generator and a second direct-fired generator, the condenser comprises a first condenser and a second condenser, the solution heat exchanger comprises a first solution heat exchanger and a second solution heat exchanger, the solution pump comprises a first solution pump and a second solution pump, a dilute solution outlet pipe of the second solution heat exchanger is simultaneously connected with a liquid inlet pipe of the second direct-fired generator and a low-emission liquid inlet pipe of the low-pressure generator, a first solution switching valve is arranged on the liquid inlet pipe of the second direct-fired generator, and a second solution switching valve is arranged on the low-emission liquid inlet pipe;
the liquid outlet pipe of the second direct-fired generator and the low-emission liquid outlet pipe of the low-pressure generator are connected with the concentrated solution inlet pipe of the second solution heat exchanger at the same time;
the first direct-fired generator steam outlet pipe of the first direct-fired generator is simultaneously connected with the low-emission steam inlet pipe of the low-pressure generator and the first condenser steam inlet pipe of the first condenser;
the second condenser water inlet pipe of the second condenser and the absorber water inlet pipe of the absorber are simultaneously connected with a cooling water inlet main pipe, and a fourth valve is arranged on the second condenser water inlet pipe;
the absorber water outlet pipe of the absorber is connected with the first condenser water inlet pipe of the first condenser and the absorber water outlet straight-through pipe of the absorber at the same time, a first valve is arranged on the absorber water outlet straight-through pipe, a second valve is arranged on the first condenser water inlet pipe, and a hot water communication pipe with a third valve is arranged between the absorber water outlet pipe and the second condenser water inlet pipe.
Preferably, the low pressure generator, the first condenser and the second condenser are arranged in the same low-heat-emission condenser cylinder, and a condenser separation plate is arranged between the first condenser and the second condenser.
Preferably, the first condenser is provided separately in one cartridge.
Preferably, the evaporator and the absorber are in a single-stage type.
Preferably, the evaporator and the absorber are two-stage evaporator and absorber, and the evaporator and absorber cylinder are internally provided with the evaporator and absorber sectional baffle.
The beneficial effects of the invention are as follows:
the unit is additionally provided with the solution heat exchanger, the direct-fired generator, the low-pressure generator, the condenser, the solution switching valve and the cooling water switching valve on the basis of the traditional direct-fired single-effect lithium bromide absorption heat pump unit, so that the unit can perform heat supply operation according to the working principle of the direct-fired single-effect lithium bromide absorption heat pump unit, can perform refrigeration operation according to the working principle of the direct-fired double-effect lithium bromide absorption water chilling unit, can be used for one machine, provides heat supply and refrigeration equipment for places with application conditions, reduces equipment investment cost and saves equipment occupied space.
Drawings
Fig. 1 is a schematic structural diagram of a conventional direct-fired single-effect lithium bromide absorption heat pump unit.
Fig. 2 is a schematic structural diagram of a direct-fired lithium bromide absorption heat pump unit with a double-effect refrigeration function according to a first embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a direct-fired lithium bromide absorption heat pump unit with double-effect refrigeration function according to a second embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a direct-fired lithium bromide absorption heat pump unit with a double-effect refrigeration function according to a third embodiment of the present invention.
Wherein: 1-absorber, 2-refrigerant pump, 3-evaporator, 4-first solution pump, 5-second solution pump, 6-low emission liquid pipe, 7-second burner, 8-second direct-fired generator liquid outlet pipe, 9-second solution heat exchanger concentrated solution inlet pipe, 10-second solution heat exchanger, 11-second solution heat exchanger dilute solution outlet pipe, 12-first solution switching valve, 13-second solution switching valve, 14-first solution heat exchanger, 15-second direct-fired generator liquid inlet pipe, 16-low emission liquid pipe, 17-first burner, 18-first direct-fired generator, 19-second direct-fired generator, 20-first direct-fired generator steam outlet pipe 21-second direct fired generator steam outlet pipe, 22-low pressure generator, 23-low emission steam inlet pipe, 24-low emission condenser cylinder, 25-second condenser, 26-condenser partition plate, 27-first condenser, 28-first condenser steam inlet pipe, 29-second condenser outlet pipe, 30-first condenser outlet pipe, 31-cooling water outlet header, 32-absorber water outlet straight pipe, 33-first valve, 34-first condenser inlet pipe, 35-second valve, 36-third valve, 37-hot water communication pipe, 38-absorber outlet pipe, 39-evaporator outlet pipe, 40-evaporator inlet pipe, 41-second condenser inlet pipe, 42-fourth valve, 43-absorber inlet pipe, 44-cooling water inlet header, 45-solution pump, 46-solution heat exchanger, 47-burner, 48-direct fired generator, 49-condenser, 50-condenser outlet tube, 51-evaporative absorber cartridge, 52-evaporative absorber section divider, 53-first absorber, 54-first evaporative absorber chamber, 55-first evaporator, 56-first refrigerant pump, 57-second refrigerant pump, 58-second evaporator, 59-second evaporative absorber chamber, 60-second absorber.
Detailed Description
First embodiment referring to fig. 2, the present invention relates to a direct-fired lithium bromide absorption heat pump unit with a double-effect refrigeration function, which is composed of an evaporator 3, an absorber 1, a direct-fired generator, a low-pressure generator 22, a condenser, a solution heat exchanger, a solution pump, a refrigerant pump 2, a control system (not shown in the figure), and pipes and valves connecting the components. The direct-fired generator comprises a first direct-fired generator 18 and a second direct-fired generator 19, and the first direct-fired generator 18 and the second direct-fired generator 19 are respectively provided with a first burner 17 and a second burner 7. The condenser comprises a first condenser 27 and a second condenser 25, the solution heat exchanger comprises a first solution heat exchanger 14 and a second solution heat exchanger 10, the solution pump comprises a first solution pump 4 and a second solution pump 5, the low pressure generator 22, the first condenser 27 and the second condenser 25 are arranged in the same low-emissivity condenser cylinder 24, and a condenser separation plate 26 is arranged between the first condenser 27 and the second condenser 25. The evaporator 3 and the absorber 1 of the unit adopt a single-section structure. The dilute solution outlet pipe 11 of the second solution heat exchanger is connected with the liquid inlet pipe 15 and the low-emission liquid inlet pipe 16 of the second direct-fired generator at the same time, the liquid inlet pipe 15 of the second direct-fired generator is provided with a first solution switching valve 12, and the low-emission liquid inlet pipe 16 is provided with a second solution switching valve 13; the liquid outlet pipe 8 and the low emission liquid pipe 6 of the second direct-fired generator are simultaneously connected with the concentrated solution inlet pipe 9 of the second solution heat exchanger. The first direct fired generator steam outlet pipe 20 is connected to both the low emission steam inlet pipe 23 and the first condenser steam inlet pipe 28; the second direct-fired generator steam outlet pipe 21 enters the steam inlet of the second condenser 25, the cooling water inlet manifold 44 is connected to the absorber water inlet pipe 43 and the second condenser water inlet pipe 41 at the same time, and the second condenser water inlet pipe 41 is provided with a fourth valve 42; the absorber water outlet pipe 38 is connected with the first condenser water inlet pipe 34 and the absorber water outlet straight pipe 32 at the same time, the first condenser water inlet pipe 34 is provided with a second valve 35, and the absorber water outlet straight pipe 32 is provided with a first valve 33; a hot water communication pipe 37 with a third valve 36 is arranged between the absorber outlet pipe 38 and the second condenser inlet pipe 41; the first condenser outlet pipe 30, the second condenser outlet pipe 29 and the absorber outlet straight pipe 32 are connected to the cooling water outlet header 31 at the same time.
When the unit is in refrigeration operation, the second solution switching valve 13, the first valve 33 and the fourth valve 42 are opened, the first solution switching valve 12, the second valve 35 and the third valve 36 are closed, the second direct-fired generator 19 and the first condenser 27 do not work, the first direct-fired generator 18 becomes a high-pressure generator, cold water enters and exits the unit through the evaporator water inlet pipe 40 and the evaporator water outlet pipe 39, and cooling water enters and exits the unit through the cooling water inlet main pipe 44 and the cooling water outlet main pipe 31, and the unit is in refrigeration operation according to the refrigeration working principle of the direct-fired double-effect lithium bromide absorption refrigerator. The solution circulation flow path of the first direct-fired generator 18 and the low-pressure generator 22 is a parallel flow path, and the cooling water flow path of the absorber 1 and the second condenser 25 is a parallel flow path.
When the unit is in heating operation, the second solution switching valve 13, the first valve 33 and the fourth valve 42 are closed, the first solution switching valve 12, the second valve 35 and the third valve 36 are opened, and the low pressure generator 22 is not operated. The first solution pump 4, the first solution heat exchanger 14, the first direct-fired generator 18, the first condenser 27, the refrigerant pump 2, the evaporator 3, the absorber 1, the control system (not shown in the figure) and the pipes and valves connecting the components form a set of single-effect heat pump working cycles, and the second solution pump 5, the second solution heat exchanger 10, the second direct-fired generator 19, the second condenser 25, the refrigerant pump 2, the evaporator 3, the absorber 1, the control system (not shown in the figure) and the pipes and valves connecting the components form another set of single-effect heat pump working cycles. The two groups of single-effect heat pumps are operated in parallel in a working cycle, so that the waste heat and the water heat in the heat exchange tubes of the inlet evaporator 3 and the outlet evaporator 3 are recycled, and the hot water in the heat exchange tubes of the absorber 1 and the condenser which are sequentially inlet and outlet is heated, and the heat is supplied to the outside. The residual water enters and exits the unit through the evaporator water inlet pipe 40 and the evaporator water outlet pipe 39, and the hot water enters and exits the unit through the cooling water inlet manifold 44 and the cooling water outlet manifold 31.
Second embodiment referring to fig. 3, a first condenser 27 is provided separately in one condenser cylinder, and the rest of the structure is the same as that of the first embodiment.
Third embodiment referring to fig. 4, the evaporator 3 and the absorber 1 of the unit adopt a two-stage structure, the evaporation absorber cylinder 51 of the unit is internally provided with an evaporation absorber sectional baffle plate 52, the chamber of the evaporation absorber cylinder 51 is divided into a first evaporation absorber chamber 54 and a second evaporation absorber chamber 59, the heat exchange tube bundles of the evaporator 3 and the absorber 1 are divided into two groups and are arranged in the first evaporation absorber chamber 54 and the second evaporation absorber chamber 59 to form a first evaporator 55, a second evaporator 58, a first absorber 53 and a second absorber 60, the evaporator 3 and the absorber 1 of the unit form a two-stage structure, and the rest structures are the same as those of the first embodiment.
The two-stage evaporation absorber unit is suitable for application places with low requirements on the temperature of the waste heat water outlet, and is beneficial to recycling of low-grade heat sources. When the refrigerant pumps of the two-stage evaporative absorber unit are arranged according to the first refrigerant pump 56 and the second refrigerant pump 57, the two groups of single-effect heat pump working cycles can be operated simultaneously or independently.
In addition to the above embodiments, the present invention also includes other embodiments, and all technical solutions that are formed by equivalent transformation or equivalent substitution should fall within the protection scope of the claims of the present invention.
Claims (5)
1. The utility model provides a take direct-fired lithium bromide absorption heat pump unit of economic benefits and social benefits refrigeration function, including evaporimeter (3), absorber (1), direct-fired generator, low pressure generator (22), the condenser, solution heat exchanger, solution pump and coolant pump (2), direct-fired generator includes first direct-fired generator (18) and second direct-fired generator (19), the condenser includes first condenser (27) and second condenser (25), solution heat exchanger includes first solution heat exchanger (14) and second solution heat exchanger (10), the solution pump includes first solution pump (4) and second solution pump (5), its characterized in that: the second solution heat exchanger dilute solution outlet pipe (11) of the second solution heat exchanger (10) is connected with a second direct-fired generator liquid inlet pipe (15) of a second direct-fired generator (19) and a low-emission liquid inlet pipe (16) of a low-pressure generator (22) at the same time, a first solution switching valve (12) is arranged on the second direct-fired generator liquid inlet pipe (15), and a second solution switching valve (13) is arranged on the low-emission liquid inlet pipe (16);
the second direct-fired generator liquid outlet pipe (8) of the second direct-fired generator (19) and the low-emission liquid outlet pipe (6) of the low-pressure generator (22) are simultaneously connected with the second solution heat exchanger concentrated solution inlet pipe (9) of the second solution heat exchanger (10);
the first direct-fired generator steam outlet pipe (20) of the first direct-fired generator (18) is connected with the low-emission steam inlet pipe (23) of the low-pressure generator (22) and the first condenser steam inlet pipe (28) of the first condenser (27) at the same time;
a second condenser water inlet pipe (41) of the second condenser (25) and an absorber water inlet pipe (43) of the absorber (1) are simultaneously connected with a cooling water inlet main pipe (44), and a fourth valve (42) is arranged on the second condenser water inlet pipe (41);
an absorber water outlet pipe (38) of the absorber (1) is connected with a first condenser water inlet pipe (34) of the first condenser (27) and an absorber water outlet straight-through pipe (32) of the absorber (1), a first valve (33) is arranged on the absorber water outlet straight-through pipe (32), a second valve (35) is arranged on the first condenser water inlet pipe (34), and a hot water communication pipe (37) with a third valve is arranged between the absorber water outlet pipe (38) and the second condenser water inlet pipe (41).
2. The direct-fired lithium bromide absorption heat pump unit with double-effect refrigeration function according to claim 1, wherein: the low-pressure generator (22), the first condenser (27) and the second condenser (25) are arranged in the same low-emission condenser cylinder (24), and a condenser separation plate (26) is arranged between the first condenser (27) and the second condenser (25).
3. The direct-fired lithium bromide absorption heat pump unit with double-effect refrigeration function according to claim 1, wherein: the first condenser (27) is provided separately in one cylinder.
4. A direct-fired lithium bromide absorption heat pump unit with double-effect refrigeration function according to one of claims 1 to 3, characterized in that: the evaporator (3) and the absorber (1) are of a single-section type.
5. A direct-fired lithium bromide absorption heat pump unit with double-effect refrigeration function according to one of claims 1 to 3, characterized in that: the evaporator (3) and the absorber (1) are provided with an evaporation absorber sectioning baffle plate (52) in an evaporation absorber cylinder (51) of the evaporator (3) and the absorber (1), and the evaporator (3) and the absorber (1) are two-section type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910546931.4A CN110173928B (en) | 2019-06-24 | 2019-06-24 | Direct-fired lithium bromide absorption heat pump unit with double-effect refrigeration function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910546931.4A CN110173928B (en) | 2019-06-24 | 2019-06-24 | Direct-fired lithium bromide absorption heat pump unit with double-effect refrigeration function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110173928A CN110173928A (en) | 2019-08-27 |
| CN110173928B true CN110173928B (en) | 2024-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910546931.4A Active CN110173928B (en) | 2019-06-24 | 2019-06-24 | Direct-fired lithium bromide absorption heat pump unit with double-effect refrigeration function |
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| CN113154719B (en) * | 2021-05-17 | 2024-06-14 | 双良节能系统股份有限公司 | Direct-fired double-effect lithium bromide absorption type cold water and heat pump unit |
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| CN105402927A (en) * | 2015-12-23 | 2016-03-16 | 双良节能系统股份有限公司 | Dual-condition direct-combustion type single-effect lithium bromide absorption heat pump set |
| CN211233439U (en) * | 2019-06-24 | 2020-08-11 | 双良节能系统股份有限公司 | Direct-fired lithium bromide absorption heat pump unit with double-effect refrigeration function |
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2019
- 2019-06-24 CN CN201910546931.4A patent/CN110173928B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2826307Y (en) * | 2005-08-29 | 2006-10-11 | 江苏双良空调设备股份有限公司 | Hot water direct combustion dual-purpose type lithium bromide absorption type water chilling, water chilling/heating unit |
| CN201340137Y (en) * | 2009-01-08 | 2009-11-04 | 江苏双良空调设备股份有限公司 | Double high pressure generator direct combustion type lithium bromide absorption cold water/hot and cold water set |
| CN102914079A (en) * | 2012-10-27 | 2013-02-06 | 双良节能系统股份有限公司 | Two-stage type hot water direct-fired single-double effect composite lithium bromide absorption refrigeration unit |
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| CN105402927A (en) * | 2015-12-23 | 2016-03-16 | 双良节能系统股份有限公司 | Dual-condition direct-combustion type single-effect lithium bromide absorption heat pump set |
| CN211233439U (en) * | 2019-06-24 | 2020-08-11 | 双良节能系统股份有限公司 | Direct-fired lithium bromide absorption heat pump unit with double-effect refrigeration function |
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| CN110173928A (en) | 2019-08-27 |
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