CN201819470U - Two-section or multi-section first-class lithium bromide absorption type heat pump unit - Google Patents
Two-section or multi-section first-class lithium bromide absorption type heat pump unit Download PDFInfo
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- CN201819470U CN201819470U CN2010202707796U CN201020270779U CN201819470U CN 201819470 U CN201819470 U CN 201819470U CN 2010202707796 U CN2010202707796 U CN 2010202707796U CN 201020270779 U CN201020270779 U CN 201020270779U CN 201819470 U CN201819470 U CN 201819470U
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- 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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- 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
Abstract
The utility model relates to a two-section or multi-section first-class lithium bromide absorption type heat pump unit the structure of which is as follows: based on the original first-class lithium bromide absorption type heat pump unit, an evaporator and an absorber are divided into two sections or multiple sections, and the evaporator of each section and the corresponding absorber form a relatively independent cavity. A low-temperature heat source flows through the evaporators of all sections in sequence and is cooled section by section so as to form different pressure cavities in the unit; a heat medium passes through the absorbers of all sections and then enters a condenser (2); and lithium bromide solution reversely flows in series through the absorbers corresponding to the evaporators of all sections. At the same temperature of the heat medium, the two-section or multi-section first-class lithium bromide absorption type heat pump unit can reduce the outlet temperature of the low-temperature heat source to be lower, and recycle the heat of the low-temperature heat source to a greater degree; or at the same outlet temperature of the low-temperature heat source, the heat pump unit can prepare the heat medium with higher temperature and improve the grade of the heat medium. The heat pump unit can increase the concentration difference of the lithium bromide solution, reduce the circulation quantity of the lithium bromide solution, and improve the heat efficiency.
Description
(1) technical field
The utility model relates to a kind of first kind lithium bromide absorption type heat pump unit.Belong to air conditioner technical field.
(2) background technology
First kind lithium bromide absorption type heat pump unit in the past is made of generator 1, condenser 2, absorber 3, evaporimeter 4, heat exchanger 5, solution pump 6, cryogenic fluid pump 7, control system (not shown) and the pipeline, the valve that connect each parts as shown in Figure 1.The low-temperature heat source evaporimeter 4 of flowing through, heating agent flow through absorber 3 and condenser 2.During unit operation, absorbed low-temperature heat source heat evaporimeter 4 heat-transfer pipes of flowing through by cryogenic fluid pump 7 from evaporimeter 4 tops sprays cold-producing medium down, enter absorber 3 after the vaporization, absorbed by wherein bromize lithium concentrated solution, release heat heats heating agent; Concentration was thinning after bromize lithium concentrated solution absorbed refrigerant vapour in the absorber 3, was extracted out by solution pump 6, sent into through heat exchanger 5 to be driven the thermal source heating in the generator 1 and to concentrate, and the concentrated solution after concentrating comes back in the absorber 3 through heat exchanger 5 and absorbs refrigerant vapour; The high temperature refrigerant vapour that concentrating and separating is come out then enters in the condenser 2, heats heating agent and condensation once more after throttling arrangement is got back in the evaporimeter 4.This source pump is applied in a plurality of industries.But source pump shown in Figure 1 is when heat medium temperature is higher, the low-temperature heat source outlet temperature can not be fallen too lowly, otherwise lithium-bromide solution concentration is too high, the crystallization risk appears easily, thereby can not fully reclaim the heat of low-temperature heat source, cause energy waste, or when the big temperature difference of low-temperature heat source, outlet temperature are low, can not utilize the advantage of its big temperature difference to promote unit efficiency, and the heating agent that obtains higher temperature, the application of restriction heating agent.
(3) summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, providing a kind of can be even lower the outlet temperature of low-temperature heat source under identical heat medium temperature situation, or under same low temperature thermal source outlet temperature situation, produce the heating agent of higher temperature, and under identical heat medium temperature, low-temperature heat source temperature condition, promote two sections or multistage type first kind lithium bromide absorption type heat pump unit of the thermal efficiency.
The purpose of this utility model is achieved in that on former first kind lithium bromide absorption type heat pump unit basis, and evaporimeter, absorber are divided into two sections or multistage, and evaporimeter of each section and the absorber corresponding with it constitute relatively independent cavity.The low-temperature heat source sequential flow is through each section evaporimeter, and the segmentation cooling forms different pressure chambers in unit; Heating agent by each section absorber, enters condenser, with temperature and the concentration that reduces lithium-bromide solution in the absorber as far as possible earlier again; Lithium-bromide solution is the series opposing absorber corresponding with each section evaporimeter (the corresponding absorber of first low-temperature zone evaporimeter of flowing through then, the absorber of high temperature section evaporimeter correspondence again), utilize the relation property of lithium-bromide solution concentration and refrigerant vapour pressure, absorb the refrigerant vapour that each section evaporimeter produces from the low-pressure cavity to the high pressure chest successively, the concentration segmentation is thinning.
Two sections of the utility model or multistage type first kind lithium bromide absorption type heat pump unit arrange that the lithium-bromide solution between each cavity flows through the solution elevating pump and realizes about the cavity that described each section evaporimeter, absorber constitute.
Two sections of the utility model or multistage type first kind lithium bromide absorption type heat pump unit, the cavity that described each section evaporimeter, absorber constitute arrange that up and down the lithium-bromide solution between each cavity flows from top to bottom by deadweight and pressure reduction.
Two sections of the utility model or multistage type first kind lithium bromide absorption type heat pump unit, described absorber comprises low-temperature zone absorber and high temperature section absorber, the heating agent low-temperature zone absorber of flowing through earlier, the high temperature section of flowing through again absorber.
The beneficial effects of the utility model:
There is the upper limit in lithium-bromide solution concentration during because of operation of heat pump, can not infinite height, and because high temperature section absorber refrigerant vapour pressure height, the solution concentration of series flow is even lower, thereby the lithium-bromide solution concentration of using the low-temperature zone absorber can compare higher, thereby under identical heat medium temperature situation, the outlet temperature of low-temperature heat source can be even lower, the bigger low-temperature heat source heat that reclaims possibly, or under same low temperature thermal source outlet temperature situation, produce the heating agent of higher temperature, promote the heating agent grade.
Under identical heat medium temperature, low-temperature heat source temperature condition, can make full use of the big temperature difference advantage of low-temperature heat source, increase the concentration difference of lithium-bromide solution, reduce its internal circulating load, promote the thermal efficiency.
In addition, behind the employing segmental structure, because of high pressure chest refrigerant vapour pressure height, under the same solution concentration situation, solution temperature raises, and has increased heat transfer temperature difference between solution and the heating agent, can reduce heat transfer area, reduces equipment cost.
(4) description of drawings
Fig. 1 is first kind lithium bromide absorption type heat pump unit schematic diagram in the past.
Fig. 2 is two sections of the utility model or multistage type first kind lithium bromide absorption type heat pump unit schematic diagram.
Reference numeral among the figure:
(5) specific embodiment
Figure 2 shows that two segment type first kind lithium bromide absorption type heat pump units of the left and right sides segmentation that the utility model relates to, this unit is made of generator 1, condenser 2, high temperature section absorber 3.1, low-temperature zone absorber 3.2, high temperature section evaporimeter 4.1, low-temperature zone evaporimeter 4.2, heat exchanger 5, solution circulation pump 6.1, solution elevating pump 6.2, cryogenic fluid pump 7, control system (not shown) and pipeline, valve of connecting each parts etc.High temperature section evaporimeter 4.1 and high temperature section absorber 3.1 are in a cavity, low-temperature zone evaporimeter 4.2 and low-temperature zone absorber 3.2 are in another cavity, the cavity at high temperature section evaporimeter 4.1 and high temperature section absorber 3.1 places and low-temperature zone evaporimeter 4.2 separate by dividing plate with the cavity at low-temperature zone absorber 3.2 places, about arrange, thereby when operation of heat pump, can form two independently pressure chambers.Cold-producing medium in two cavitys is communicated with (fluid-tight by the refrigerant liquid capsule, guarantee the pressure differential between two cavitys, two cavitys also can separate and be provided with two cryogenic fluid pumps fully), lithium-bromide solution is then realized flowing from the low-pressure cavity to the high pressure chest by solution elevating pump 6.2.During operation of heat pump, the low-temperature heat source sequential flow is through high temperature section evaporimeter 4.1, low-temperature zone evaporimeter 4.2, after cold-producing medium absorbs the vaporization of low-temperature heat source heat, since the relation of low-temperature heat source segmentation cooling, the cavity refrigerant vapour temperature height at high temperature section evaporimeter 4.1, high temperature section absorber 3.1 places, pressure height, form high pressure chest, and the cavity temperature at low-temperature zone evaporimeter 4.2, low-temperature zone absorber 3.2 places is low, and pressure is low, forms low-pressure cavity; Heating agent each absorber of then flowing through earlier enters condenser, at last again to reduce solution temperature, the solution concentration in the absorber as far as possible; The bromize lithium concentrated solution that is driven in generator 1 after the thermal source heating concentrates absorbs refrigerant vapour earlier in the lower low-temperature zone absorber 3.2 of pressure, send in the higher high temperature section absorber 3.1 of pressure by solution elevating pump 6.2 again after concentration is thinning and continue to absorb refrigerant vapour, send into by solution circulation pump 6.1 again after concentration is further thinning that heating concentrates in the generator 1.The refrigerant vapour that concentrating and separating is come out in generator 1 enters in the condenser 2 and to continue the heat hot matchmaker, and self condensation is after throttling arrangement enters in two evaporimeters (or wherein any).
Heating agent in the two segment type first kind lithium bromide absorption type heat pump units shown in Figure 2 mobile in absorber is the first low-temperature zone absorber 3.2 of order, the high temperature section absorber 3.1 again, it also can be parallel connection two absorbers of flowing through, or the high temperature section absorber 3.1 of flowing through earlier, the low-temperature zone of flowing through again absorber 3.2.
Two cavitys of the high temperature section evaporimeter 4.1 in the two segment type first kind lithium bromide absorption type heat pump units shown in Figure 2, high temperature section absorber 3.1 and low-temperature zone evaporimeter 4.2, low-temperature zone absorber 3.2 are arranged about being, it also can be arranged up and down, can reduce solution elevating pump 6.2 this moment, and solution flows into next cavity by deadweight and pressure reduction by a last cavity.Guarantee each other pressure differential by the fluid-tight of dependency structure and cold-producing medium and lithium-bromide solution between two cavitys.
Multistage type first kind lithium bromide absorption type heat pump unit is that the evaporimeter in the source pump, absorber are divided into three sections or more section, thereby forms three and above individual cavity, and structure and two segment type first kind lithium bromide absorption type heat pump units are similar.
Claims (6)
1. one kind two sections or multistage type first kind lithium bromide absorption type heat pump unit, comprise generator (1), condenser (2), evaporimeter, absorber, heat exchanger (5), solution pump and cryogenic fluid pump (7), it is characterized in that: described evaporimeter and absorber are divided into two sections or multistage, and evaporimeter of each section and the absorber corresponding with it constitute relatively independent cavity; The low-temperature heat source sequential flow is through the evaporimeter of each section; Lithium-bromide solution then differential concatenation is flowed through and the pairing absorber of each section evaporimeter; Heating agent each section absorber of then flowing through earlier, the condenser (2) of flowing through again at last.
2. a kind of two sections or multistage type first kind lithium bromide absorption type heat pump unit according to claim 1, it is characterized in that: arrange that the lithium-bromide solution between each cavity flows through the solution elevating pump and realizes about the cavity that described each section evaporimeter, absorber constitute.
3. a kind of two sections or multistage type first kind lithium bromide absorption type heat pump unit according to claim 1, it is characterized in that: the cavity that described each section evaporimeter, absorber constitute arranges that up and down the lithium-bromide solution between each cavity flows from top to bottom by deadweight and pressure reduction.
4. according to claim 1,2 or 3 described a kind of two sections or multistage type first kind lithium bromide absorption type heat pump units, it is characterized in that: described absorber comprises low-temperature zone absorber (3.2) and high temperature section absorber (3.1), the heating agent low-temperature zone absorber (3.2) of flowing through earlier, the high temperature section of flowing through again absorber (3.1).
5. according to claim 1,2 or 3 described a kind of two sections or multistage type first kind lithium bromide absorption type heat pump units, it is characterized in that: described absorber comprises low-temperature zone absorber (3.2) and high temperature section absorber (3.1), the heating agent high temperature section absorber (3.1) of flowing through earlier, the low-temperature zone of flowing through again absorber (3.2).
6. according to claim 1,2 or 3 described a kind of two sections or multistage type first kind lithium bromide absorption type heat pump units, it is characterized in that: described heating agent parallel connection each absorber of flowing through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202707796U CN201819470U (en) | 2010-07-26 | 2010-07-26 | Two-section or multi-section first-class lithium bromide absorption type heat pump unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202707796U CN201819470U (en) | 2010-07-26 | 2010-07-26 | Two-section or multi-section first-class lithium bromide absorption type heat pump unit |
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| CN201819470U true CN201819470U (en) | 2011-05-04 |
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| CN2010202707796U Expired - Fee Related CN201819470U (en) | 2010-07-26 | 2010-07-26 | Two-section or multi-section first-class lithium bromide absorption type heat pump unit |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914080A (en) * | 2012-10-27 | 2013-02-06 | 双良节能系统股份有限公司 | Two-stage single-effect and double-effect lithium bromide absorption refrigerating unit with smoke and hot water afterburning |
| CN102914081A (en) * | 2012-10-27 | 2013-02-06 | 双良节能系统股份有限公司 | Two-section flue gas hot-water single/double-effect composite lithium bromide absorption type refrigerating unit |
| CN102997480A (en) * | 2012-12-06 | 2013-03-27 | 双良节能系统股份有限公司 | Flue gas and hot water single and double effect compound lithium bromide absorbing refrigerating unit |
| CN103808059A (en) * | 2014-02-17 | 2014-05-21 | 双良节能系统股份有限公司 | Secondary-generation and secondary-absorption second-class lithium bromide absorption heat pump unit |
| CN105890220A (en) * | 2016-06-02 | 2016-08-24 | 松下制冷（大连）有限公司 | Direct-fired efficient environment-friendly lithium bromide absorption hot and cold water unit |
| CN106440478A (en) * | 2016-11-19 | 2017-02-22 | 双良节能系统股份有限公司 | Cascade-type solution series single-effect lithium bromide absorption refrigeration heat pump unit |
| CN106642795A (en) * | 2016-11-19 | 2017-05-10 | 双良节能系统股份有限公司 | Overlapped solution parallel single-effect lithium bromide absorption refrigeration heat pump unit |
-
2010
- 2010-07-26 CN CN2010202707796U patent/CN201819470U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914080A (en) * | 2012-10-27 | 2013-02-06 | 双良节能系统股份有限公司 | Two-stage single-effect and double-effect lithium bromide absorption refrigerating unit with smoke and hot water afterburning |
| CN102914081A (en) * | 2012-10-27 | 2013-02-06 | 双良节能系统股份有限公司 | Two-section flue gas hot-water single/double-effect composite lithium bromide absorption type refrigerating unit |
| CN102997480A (en) * | 2012-12-06 | 2013-03-27 | 双良节能系统股份有限公司 | Flue gas and hot water single and double effect compound lithium bromide absorbing refrigerating unit |
| CN103808059A (en) * | 2014-02-17 | 2014-05-21 | 双良节能系统股份有限公司 | Secondary-generation and secondary-absorption second-class lithium bromide absorption heat pump unit |
| CN105890220A (en) * | 2016-06-02 | 2016-08-24 | 松下制冷（大连）有限公司 | Direct-fired efficient environment-friendly lithium bromide absorption hot and cold water unit |
| CN106440478A (en) * | 2016-11-19 | 2017-02-22 | 双良节能系统股份有限公司 | Cascade-type solution series single-effect lithium bromide absorption refrigeration heat pump unit |
| CN106642795A (en) * | 2016-11-19 | 2017-05-10 | 双良节能系统股份有限公司 | Overlapped solution parallel single-effect lithium bromide absorption refrigeration heat pump unit |
| CN106642795B (en) * | 2016-11-19 | 2019-07-19 | 双良节能系统股份有限公司 | Superposition type solution parallel connection mono-potency lithium bromide absorption type refrigeration heat pump unit |
| CN106440478B (en) * | 2016-11-19 | 2019-07-19 | 双良节能系统股份有限公司 | Superposition type solution series mono-potency lithium bromide absorption type refrigeration heat pump unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110504 Termination date: 20180726 |