CN213396007U - Small-size lithium bromide absorption refrigeration unit - Google Patents
Small-size lithium bromide absorption refrigeration unit Download PDFInfo
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- CN213396007U CN213396007U CN202022140208.7U CN202022140208U CN213396007U CN 213396007 U CN213396007 U CN 213396007U CN 202022140208 U CN202022140208 U CN 202022140208U CN 213396007 U CN213396007 U CN 213396007U
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- lithium bromide
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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
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Abstract
A small lithium bromide absorption refrigerating unit has the following working principle: the lithium bromide solution from the absorption chamber is driven by a thermal siphon pump, enters the generator, is heated by a heat source, evaporates a large amount of water vapor, simultaneously increases the concentration to become a concentrated solution, the concentrated solution flows back to the absorption chamber, the water vapor from the evaporation chamber is absorbed in the absorption chamber, the concentration is recovered, and the working cycle of the lithium bromide solution is completed; the water vapor evaporated by the generator enters the condenser to be condensed into liquid water, flows into the evaporation chamber, is evaporated and absorbs heat in the evaporation chamber to finish the refrigeration process, and the evaporated water vapor enters the absorption chamber to be absorbed by the lithium bromide solution to finish the working cycle of the refrigerant water. The utility model discloses a thermal siphon pump replaces lithium bromide refrigerating unit's canned motor pump, has not only practiced thrift the power consumption, makes unit gassing scope promote moreover, the circulation multiplying power reduces, and consequently the extravagant heat of unit is few, and unit efficiency is higher.
Description
Technical Field
The invention relates to the field of absorption refrigeration, in particular to a small lithium bromide absorption refrigeration unit.
Background
The lithium bromide-water absorption type refrigerating device takes water as a refrigerant and lithium bromide-water solution as an absorbent to prepare cold water with the temperature of above 0 ℃. The solar energy heat source is used as a driving heat source, a large amount of electricity or other high-grade heat sources are saved, and the solar energy heat source has the advantages of no vibration, low noise, no odor and no toxicity, meets the environmental protection requirement, and is a hotspot for the research in the technical field of current air conditioners.
However, due to the low refrigeration coefficient, the large volume, the expensive material cost and the like, the technology has not been economically feasible so far, and is greatly limited in the application occasions, especially in the aspects of household and small-sized air conditioners.
The existing small-sized lithium bromide-water absorption refrigerating unit comprises: the generator comprises a generator, a condenser, an evaporator, a solution heat exchanger, an ejector, an absorber, a solution pump and a refrigerant pump, wherein dilute solution flowing out of the absorber is boosted by the solution pump, flows through the solution heat exchanger to enter the generator, is heated by hot water generated by solar energy in the generator to generate water vapor, is concentrated into concentrated solution, then returns to the absorber through the solution heat exchanger to absorb the water vapor from the evaporator and is changed into dilute solution, and a solution loop is completed; the water vapor generated in the generator flows into the condenser to be condensed into refrigerant water, then enters the evaporator to be evaporated, the refrigeration effect is generated, the evaporated water vapor enters the absorber to be absorbed by the solution, and the refrigerant water loop is completed.
The small-sized lithium bromide-water absorption refrigerating unit has high cost, large maintenance amount, complex structure and poor practicability, and the reasons are as follows: (1) the small-sized unit has the defects that the heat exchange area is reduced due to the fact that the solution flow is small and the solution distribution is uniform, and the unit efficiency is influenced; (2) the lithium bromide barrier pump has a large flow rate, which results in large power consumption and increased cost.
Disclosure of Invention
The utility model aims to provide a: in view of the above-mentioned technical problems, a small-sized lithium bromide absorption refrigerating unit with a small flow rate is provided.
In order to realize the purpose, the utility model discloses a technical scheme as follows:
the utility model provides a small-size lithium bromide absorption refrigeration unit, includes generator (1), absorption evaporator (2), condenser (3), cloth liquid device (4), cooling water circulating pump (5), cooling water tower (6), user terminal (7), low temperature water circulating pump (8), evaporating chamber (9), baffle (10), absorption chamber (11), thermosyphon pump (12), heat exchange tube (13), its characterized in that: the refrigerating unit consists of a lithium bromide solution circulating line, a refrigerant water circulating line, a cooling water circulating line and a low-temperature water circulating line; the solution outlet end at the bottom of the absorption chamber (11) is connected with the inlet end of the thermosyphon (12), the outlet end of the thermosyphon (12) is connected with the solution inlet end of the generator (1), and the solution outlet end of the generator (1) is connected with the solution inlet end at the top of the absorption chamber (11) to form a lithium bromide solution circulation circuit; the steam outlet end of the generator (1) is connected with the steam inlet end of the condenser (3), and the condensed water outlet end of the condenser (3) is connected with the refrigerant water inlet end of the evaporation chamber (9) to form a refrigerant water circulation circuit; the cooling water outlet end of the cooling water tower (6) is connected with the inlet end of a cooling water circulating pump (5), the outlet end of the cooling water circulating pump (5) is connected with the cooling water inlet end of an absorption chamber (11), the cooling water outlet end of the absorption chamber (11) is connected with the cooling water inlet end of a condenser (3), and the cooling water outlet end of the condenser (3) is connected with the cooling water inlet end of the cooling water tower (6) to form a cooling water circulating line; the low-temperature water outlet end of the evaporation chamber (9) is connected with the inlet end of the user terminal (7), the outlet end of the user terminal (7) is connected with the inlet end of the low-temperature water circulating pump (8), and the outlet end of the low-temperature water circulating pump (8) is connected with the low-temperature water inlet end of the evaporation chamber (9) to form a low-temperature water circulating line.
Preferably, the absorption evaporator (2) is divided into a left part and a right part, the left part is an absorption chamber (11), the right part is an evaporation chamber (9), the middle part is separated by a partition plate (10), the upper parts are communicated with each other in gas, and the bottoms are not communicated with each other.
Preferably, the absorption evaporator (2) is a vacuum sealing structure.
Preferably, the generator (1) is divided into an upper part and a lower part, the upper part is a gas-liquid separation chamber, the lower part is a tubular heat exchanger, a plurality of heat exchange tubes (13) are contained in the tubular heat exchanger, and the heat exchange tubes (13) are vertically arranged.
Preferably, the internal structure of the absorption chamber (11) is composed of a liquid distribution device (4) and a cooling coil, and the liquid distribution device (4) is positioned vertically above the cooling coil; the internal structure of the evaporation chamber (9) is the same as that of the absorption chamber (11).
Preferably, the refrigerating working medium pair adopted by the unit is lithium bromide-water.
Preferably, the vertical height of the outlet of the lithium bromide solution of the generator (1) is higher than the vertical height of the inlet of the lithium bromide solution of the absorption chamber (11).
Compared with the prior art, the utility model discloses have as follows and show the effect:
(1) according to the above technical scheme, the utility model discloses a thermosyphon pump replaces lithium bromide refrigerating unit's canned motor pump, has not only practiced thrift the power consumption, has compressed the unit cost moreover.
(2) According to the technical scheme, the lithium bromide solution is filled in the heat exchange part of the generator inside the generator and is heated and boiled by the heat exchange tube, so that the heat exchange effect of the generator is better.
(3) The utility model discloses a lithium bromide solution flow is little, realize accurate control more easily, and the flow makes unit gassing scope promote, the circulation multiplying power reduces for a short time moreover, and consequently the extravagant heat of unit is few, and unit efficiency is higher.
Drawings
Fig. 1 is a schematic structural flow diagram of an embodiment of the present invention.
In the figure: 1. the device comprises a generator, 2, an absorption evaporator, 3, a condenser, 4, a liquid distribution device, 5, a cooling water circulating pump, 6, a cooling water tower, 7, a user terminal, 8, a low-temperature water circulating pump, 9, an evaporation chamber, 10, a partition board, 11, an absorption chamber, 12, a thermosyphon pump, 13 and a heat exchange pipe.
Detailed Description
The present invention is further illustrated by the following examples.
A small lithium bromide absorption refrigeration unit, as shown in figure 1: including generator 1, absorption evaporimeter 2, condenser 3, cloth liquid device 4, cooling water circulating pump 5, cooling tower 6, user terminal 7, low temperature water circulating pump 8, evaporating chamber 9, baffle 10, absorption chamber 11, thermosyphon pump 12, heat exchange tube 13, its characterized in that: the refrigerating unit consists of a lithium bromide solution circulating line, a refrigerant water circulating line, a cooling water circulating line and a low-temperature water circulating line; the solution outlet end at the bottom of the absorption chamber 11 is connected with the inlet end of the thermosyphon 12, the outlet end of the thermosyphon 12 is connected with the solution inlet end of the generator 1, and the solution outlet end of the generator 1 is connected with the solution inlet end at the top of the absorption chamber 11 to form a lithium bromide solution circulation circuit; the steam outlet end of the generator 1 is connected with the steam inlet end of the condenser 3, and the condensed water outlet end of the condenser 3 is connected with the refrigerant water inlet end of the evaporation chamber 9 to form a refrigerant water circulation circuit; the cooling water outlet end of the cooling water tower 6 is connected with the inlet end of a cooling water circulating pump 5, the outlet end of the cooling water circulating pump 5 is connected with the cooling water inlet end of an absorption chamber 11, the cooling water outlet end of the absorption chamber 11 is connected with the cooling water inlet end of a condenser 3, and the cooling water outlet end of the condenser 3 is connected with the cooling water inlet end of the cooling water tower 6 to form a cooling water circulating line; the low-temperature water outlet end of the evaporation chamber 9 is connected with the inlet end of the user terminal 7, the outlet end of the user terminal 7 is connected with the inlet end of the low-temperature water circulating pump 8, and the outlet end of the low-temperature water circulating pump 8 is connected with the low-temperature water inlet end of the evaporation chamber 9 to form a low-temperature water circulating circuit.
The working principle is as follows: the lithium bromide solution from the absorption chamber 11 is driven by a thermal siphon pump 12, enters the generator 1, is heated by a heat source, evaporates a large amount of water vapor, simultaneously increases the concentration to become a concentrated solution, the concentrated solution flows back to the absorption chamber 11, the water vapor from the evaporation chamber 9 is absorbed in the absorption chamber 11, the concentration is recovered, and the working cycle of the lithium bromide solution is completed; the water vapor evaporated by the generator 1 enters the condenser 3 to be condensed into liquid water, flows into the evaporation chamber 9, is evaporated and absorbs heat in the evaporation chamber 9 to finish the refrigeration process, and the evaporated water vapor enters the absorption chamber 11 to be absorbed by the lithium bromide solution to finish the working cycle of refrigerant water; cooling water from a cooling water tower 6 is driven by a cooling water circulating pump 5 to enter an absorption chamber 11 for heat exchange to take away absorption heat, then enters a condenser 3 for taking away condensation heat, and returns to the cooling water tower 6 for cooling after the temperature is raised, so that the working cycle of the cooling water is completed; the low-temperature water from the evaporation chamber 9 enters the user terminal 7 to release cold energy, the temperature is raised to some extent, then the low-temperature water is driven by the low-temperature water circulating pump 8 to return to the evaporation chamber 9, the refrigerant water evaporated in the evaporation chamber 9 is cooled, the temperature is lowered, and the working cycle of the low-temperature water is completed.
The absorption evaporator 2 is divided into a left part and a right part, the left part is an absorption chamber 11, the right part is an evaporation chamber 9, the middle part is separated by a partition plate 10, the upper parts are communicated with each other in gas, and the bottoms are not communicated with each other.
The absorption evaporator 2 is a vacuum sealing structure.
The generator 1 is divided into an upper part and a lower part, wherein the upper part is a gas-liquid separation chamber, the lower part is a tubular heat exchanger, a plurality of heat exchange tubes 13 are arranged in the tubular heat exchanger, and the heat exchange tubes 13 are vertically arranged.
The inner structure of the absorption chamber 11 consists of a liquid distribution device 4 and a cooling coil, and the liquid distribution device 4 is positioned vertically above the cooling coil; the evaporation chamber 9 has the same internal structure as the absorption chamber 11.
The refrigerating working medium pair adopted by the unit is lithium bromide-water.
The vertical height of the outlet of the lithium bromide solution of the generator 1 is higher than that of the inlet of the lithium bromide solution of the absorption chamber 11, and the lithium bromide solution of the generator 1 can flow back to the absorption chamber 11 through self-gravity.
Claims (7)
1. The utility model provides a small-size lithium bromide absorption refrigeration unit, includes generator (1), absorption evaporator (2), condenser (3), cloth liquid device (4), cooling water circulating pump (5), cooling water tower (6), user terminal (7), low temperature water circulating pump (8), evaporating chamber (9), baffle (10), absorption chamber (11), thermosyphon pump (12), heat exchange tube (13), its characterized in that: the refrigerating unit consists of a lithium bromide solution circulating line, a refrigerant water circulating line, a cooling water circulating line and a low-temperature water circulating line; the solution outlet end at the bottom of the absorption chamber (11) is connected with the inlet end of the thermosyphon (12), the outlet end of the thermosyphon (12) is connected with the solution inlet end of the generator (1), and the solution outlet end of the generator (1) is connected with the solution inlet end at the top of the absorption chamber (11) to form a lithium bromide solution circulation circuit; the steam outlet end of the generator (1) is connected with the steam inlet end of the condenser (3), and the condensed water outlet end of the condenser (3) is connected with the refrigerant water inlet end of the evaporation chamber (9) to form a refrigerant water circulation circuit; the cooling water outlet end of the cooling water tower (6) is connected with the inlet end of a cooling water circulating pump (5), the outlet end of the cooling water circulating pump (5) is connected with the cooling water inlet end of an absorption chamber (11), the cooling water outlet end of the absorption chamber (11) is connected with the cooling water inlet end of a condenser (3), and the cooling water outlet end of the condenser (3) is connected with the cooling water inlet end of the cooling water tower (6) to form a cooling water circulating line; the low-temperature water outlet end of the evaporation chamber (9) is connected with the inlet end of the user terminal (7), the outlet end of the user terminal (7) is connected with the inlet end of the low-temperature water circulating pump (8), and the outlet end of the low-temperature water circulating pump (8) is connected with the low-temperature water inlet end of the evaporation chamber (9) to form a low-temperature water circulating line.
2. A compact lithium bromide absorption chiller unit as set forth in claim 1 wherein: the absorption evaporator (2) is divided into a left part and a right part, the left part is an absorption chamber (11), the right part is an evaporation chamber (9), the middle part is separated by a partition plate (10), the upper parts are in gas communication, and the bottoms are not in communication with each other.
3. A compact lithium bromide absorption chiller unit as set forth in claim 1 wherein: the absorption evaporator (2) is in a vacuum sealing structure.
4. A compact lithium bromide absorption chiller unit as set forth in claim 1 wherein: the generator (1) is divided into an upper part and a lower part, the upper part is a gas-liquid separation chamber, the lower part is a tubular heat exchanger, a plurality of heat exchange tubes (13) are arranged in the tubular heat exchanger, and the heat exchange tubes (13) are vertically arranged.
5. A compact lithium bromide absorption chiller unit as set forth in claim 1 wherein: the inner structure of the absorption chamber (11) is composed of a liquid distribution device (4) and a cooling coil, and the liquid distribution device (4) is positioned vertically above the cooling coil; the internal structure of the evaporation chamber (9) is the same as that of the absorption chamber (11).
6. A compact lithium bromide absorption chiller unit as set forth in claim 1 wherein: the refrigerating working medium pair adopted by the unit is lithium bromide-water.
7. A compact lithium bromide absorption chiller unit as set forth in claim 1 wherein: the vertical height of the outlet of the lithium bromide solution of the generator (1) is higher than that of the inlet of the lithium bromide solution of the absorption chamber (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022140208.7U CN213396007U (en) | 2020-09-26 | 2020-09-26 | Small-size lithium bromide absorption refrigeration unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022140208.7U CN213396007U (en) | 2020-09-26 | 2020-09-26 | Small-size lithium bromide absorption refrigeration unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213396007U true CN213396007U (en) | 2021-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022140208.7U Active CN213396007U (en) | 2020-09-26 | 2020-09-26 | Small-size lithium bromide absorption refrigeration unit |
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|---|---|
| CN (1) | CN213396007U (en) |
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- 2020-09-26 CN CN202022140208.7U patent/CN213396007U/en active Active
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