CN109458755B - On-line detection density direct-fired lithium bromide absorption type low-temperature water chilling unit - Google Patents
On-line detection density direct-fired lithium bromide absorption type low-temperature water chilling unit Download PDFInfo
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- CN109458755B CN109458755B CN201811606695.2A CN201811606695A CN109458755B CN 109458755 B CN109458755 B CN 109458755B CN 201811606695 A CN201811606695 A CN 201811606695A CN 109458755 B CN109458755 B CN 109458755B
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- refrigerant water
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 178
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 title claims abstract description 64
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 29
- 238000001514 detection method Methods 0.000 title claims abstract description 24
- 239000003507 refrigerant Substances 0.000 claims abstract description 141
- 238000001704 evaporation Methods 0.000 claims abstract description 32
- 230000008020 evaporation Effects 0.000 claims abstract description 26
- 239000000446 fuel Substances 0.000 claims abstract description 8
- 239000012808 vapor phase Substances 0.000 claims abstract description 6
- 239000000498 cooling water Substances 0.000 claims description 9
- 239000002826 coolant Substances 0.000 claims description 8
- 239000006096 absorbing agent Substances 0.000 claims description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 239000000295 fuel oil Substances 0.000 claims description 3
- 239000003345 natural gas Substances 0.000 claims description 3
- 239000003921 oil Substances 0.000 claims description 3
- 239000012141 concentrate Substances 0.000 claims 2
- 239000003034 coal gas Substances 0.000 claims 1
- 239000007921 spray Substances 0.000 claims 1
- 238000005057 refrigeration Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 8
- 238000007710 freezing Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000008014 freezing Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
- 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
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
-
- 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)
- Sorption Type Refrigeration Machines (AREA)
Abstract
The invention relates to an on-line detection density direct-fired lithium bromide absorption type low-temperature water chilling unit, and belongs to the technical field of refrigeration equipment. The unit comprises an evaporation temperature sensor (12), a heat source driven by the unit is fuel, a refrigerant water density online detection device is additionally arranged in a refrigerant water outer cylinder (17), a vapor phase space is reserved on the upper portion of the two parallel and level cylinder bottoms, a flow limiting hole is formed in the position of a refrigerant water inlet outer cylinder pipe (14) at the bottom of the outer cylinder, the bottom of the inner cylinder is connected with a refrigerant water return sac pipe (13), the top of the outer cylinder is connected with a refrigerant water balance pipe (18), and a refrigerant water pressure sensor (15) is arranged at the lower portion of the outer cylinder. The device can automatically detect the density of the refrigerant water on line, and further control the density of the refrigerant water within a safe range, so that the unit is always in an optimal running state.
Description
Technical Field
The invention relates to the technical field of air conditioning equipment, in particular to an on-line detection density direct-fired lithium bromide absorption type low-temperature water chilling unit.
Background
A common direct-fired lithium bromide absorption type water chilling unit is shown in figure 1, cold water with the temperature of more than 7 ℃ is prepared for air conditioning users or production processes, the temperature safety value of the cold water circulated in the unit is generally controlled to be more than 3 ℃, and the cold water density needs to be detected when the unit finds that the refrigerating capacity is insufficient in the first debugging or running process. The method of manually sampling is generally adopted for detecting the water density of the refrigerant, a densimeter is used for measuring and reading data, and once the water density of the refrigerant is found to be more than 1.04g/ml, the refrigerant is regarded as pollution, namely the refrigerant is mixed with lithium bromide solution, bypass regeneration is needed until the water density of the refrigerant is less than 1.002g/ml, and the refrigerant meets the unit requirement.
However, for a direct-fired lithium bromide absorption low-temperature water chiller for preparing cold water at about 0 ℃, the anti-freezing is critical, an anti-freezing solution can be added into cold water of an external system to lower the freezing point of the water, the temperature of the refrigerant water circulating inside the chiller is lower than that of the cold water of the external system, in order to lower the freezing point of the refrigerant water, a method of adding lithium bromide solution into the refrigerant water is often adopted, the content of the lithium bromide solution in the refrigerant water is controlled within a certain range according to the temperature of the refrigerant water, the refrigerating capacity is influenced if the density of the refrigerant water is too high, and the freezing risk exists if the density of the refrigerant water is too low, so that the direct-fired lithium bromide absorption low-temperature water chiller needs to automatically detect the density of the refrigerant water on line in real time during operation. How to automatically and online detect the water tightness of the refrigerant in real time, improves the safety and reliability, ensures that the unit is in an optimal running state, saves the unit cost, and becomes one of important subjects of the research of the existing direct-fired lithium bromide absorption low-temperature water chilling unit.
Disclosure of Invention
The invention aims to overcome the defects and provide the direct-fired lithium bromide absorption type low-temperature water chilling unit which can enable the unit to be in an optimal running state and has low cost and on-line detection density.
The invention aims at realizing the following steps: the utility model provides an on-line measuring density direct-fired lithium bromide absorption formula low temperature cooling water set, includes direct-fired high pressure generator, low pressure generator, condenser, evaporimeter, absorber, low temperature solution heat exchanger, high temperature solution heat exchanger, solution pump, coolant pump, thin solution bypass valve and evaporation temperature sensor, its characterized in that: the machine set driving heat source is fuel, the fuel can be natural gas, artificial gas, light oil, heavy oil and the like, the direct-fired high-pressure generator is a water pipe wet back type, the dilute solution enters the direct-fired high-pressure generator to be concentrated into an intermediate solution, the generated refrigerant steam enters a low-pressure generator heat transfer pipe to be condensed into refrigerant water, the intermediate solution enters the low-pressure generator to be concentrated into a concentrated solution after exchanging heat with the dilute solution through a high-temperature solution heat exchanger, the generated refrigerant steam enters the outside of a condenser heat transfer pipe to be condensed into refrigerant water, the concentrated solution enters an absorber to be sprayed after exchanging heat with the dilute solution through a low-temperature solution heat exchanger, the refrigerant water enters an evaporator to be evaporated and absorbed to prepare low-temperature cold water, the online detection device for the water tightness of the refrigerant is additionally arranged in the unit and comprises a refrigerant water return sac tube, a refrigerant water inlet outer tube, a refrigerant water pressure sensor, a refrigerant water inner tube, a refrigerant water outer tube, a refrigerant water balance tube, a control system and the like, wherein the refrigerant water inner tube is arranged in the refrigerant water outer tube, vapor phase spaces are reserved at the bottom flush and upper parts of the refrigerant water outer tube and the refrigerant water inner tube, a flow limiting hole is arranged at the refrigerant water inlet outer tube at the bottom of the refrigerant water outer tube, the bottom of the refrigerant water inner tube is connected with the refrigerant water return sac tube, the top of the refrigerant water outer tube is connected with the refrigerant water balance tube, and the refrigerant water pressure sensor is arranged at the lower part of the refrigerant water outer tube. The evaporation temperature measured by the evaporation temperature sensor corresponds to the evaporation pressure.
The device also comprises an evaporation pressure sensor which is arranged at the top of the refrigerant water outer cylinder or in the vapor phase region of the evaporator cylinder. The evaporating pressure is measured directly with an evaporating pressure sensor.
The direct-fired lithium bromide absorption type low-temperature water chilling unit is an overlapping type water chilling unit.
The cooling water is in series.
The cooling water is connected in parallel.
The device leads one path of refrigerant water from the outlet pipe of the refrigerant pump to enter the bottom of the refrigerant water outer cylinder through the refrigerant water inlet outer cylinder pipe, the refrigerant water in the outer cylinder overflows into the refrigerant water inner cylinder, and then flows into the evaporator liquid sac by the liquid level difference through the refrigerant water liquid return sac pipe automatically, and the refrigerant water continuously circulates according to the flow. The liquid level of the refrigerant in the outer cylinder is a fixed value, the water density of the refrigerant changes along with the pressure measured by the refrigerant water pressure sensor, the temperature of the cold water outlet changes along with the evaporation pressure measured by the evaporation pressure sensor (or the evaporation temperature measured by the evaporation temperature sensor corresponds to the evaporation pressure, and changes along with the evaporation pressure), the measured refrigerant water pressure minus the evaporation pressure is equal to the online detection refrigerant water pressure difference, the refrigerant water pressure difference corresponds to the refrigerant water density, the calculation formula and the corresponding relation are input into a control program, the touch screen of the unit directly displays the refrigerant water density, and the dilute solution bypass valve is regulated according to the refrigerant water density to control the refrigerant water density within a safe range.
The beneficial effects of the invention are as follows:
according to the online detection device for the coolant water density, the coolant water density is automatically detected online, the coolant water density is controlled within the safety range by the bypass valve for adjusting the dilute solution according to the coolant water density, so that the unit is in an optimal running state, the cost of the online detection device for the coolant water density is far lower than that of an online densimeter sold in the market, the measurement accuracy is high, and the vacuum tightness is good. The online detection device for the coolant water tightness can reduce the overall cost of the direct-fired lithium bromide absorption type low-temperature water chilling unit, improve the safety and reliability, solve the key problem of freezing prevention, prolong the product line of the lithium bromide absorption type water chilling unit and have wider application field.
Drawings
Fig. 1 is a schematic structural diagram of a general direct-fired lithium bromide absorption low-temperature water chiller.
Fig. 2 is a schematic structural diagram of another embodiment of an on-line detection density direct-fired lithium bromide absorption type low-temperature water chiller according to the present invention.
Fig. 3 is a schematic structural diagram of another embodiment of an on-line detection density direct-fired lithium bromide absorption type low-temperature water chiller according to the present invention.
Fig. 4 is a schematic structural diagram of an on-line detection density direct-fired lithium bromide absorption type low-temperature water chiller.
In the figure:
the direct-fired high-pressure generator 1, the low-pressure generator 2, the condenser 3, the evaporator 4, the absorber 5, the low-temperature solution heat exchanger 6, the high-temperature solution heat exchanger 8, the solution pump 9, the refrigerant pump 10, the lean solution bypass valve 11, the evaporation temperature sensor 12, the refrigerant water return sac tube 13, the refrigerant water inlet outer tube 14, the refrigerant water pressure sensor 15, the refrigerant water inner tube 16, the refrigerant water outer tube 17, the refrigerant water balance tube 18, the evaporation pressure sensor 19, the cooling water inlet A, the cooling water outlet B, the fuel combustion C, the smoke exhaust port D, the low-temperature cold water inlet C, and the low-temperature cold water outlet D.
Detailed description of the preferred embodiments
The invention is illustrated in the following description with reference to the figures and examples:
example 1:
as shown in fig. 2, an on-line detection density direct-fired lithium bromide absorption low-temperature water chiller comprises a direct-fired high-pressure generator 1, a low-pressure generator 2, a condenser 3, an evaporator 4, an absorber 5, a low-temperature solution heat exchanger 6, a high-temperature solution heat exchanger 8, a solution pump 9, a refrigerant pump 10, a dilute solution bypass valve 11 and an evaporation temperature sensor (12), and is characterized in that: the unit driving heat source is fuel, the fuel can be natural gas, artificial gas, light oil, heavy oil and the like, the direct-fired high-pressure generator 1 is a water pipe wet back type, the dilute solution enters the direct-fired high-pressure generator 1 and is concentrated into an intermediate solution, the generated refrigerant steam enters the heat transfer pipe of the low-pressure generator 2 and is condensed into refrigerant water, the intermediate solution enters the low-pressure generator 2 after heat exchange with the dilute solution through the high-temperature solution heat exchanger 8, the generated refrigerant steam enters the heat transfer pipe of the condenser 3 and is condensed into refrigerant water, the concentrated solution enters the absorber 5 and is sprayed after heat exchange with the dilute solution through the low-temperature solution heat exchanger 6, the refrigerant water enters the evaporator 4 and evaporates and absorbs heat to produce low-temperature cold water, the unit is additionally provided with a refrigerant water density on-line detection device, the refrigerant water density on-line detection device comprises a refrigerant water return bag pipe 13, a refrigerant water pressure sensor 15, a refrigerant water inner barrel 16, a refrigerant water balance pipe 18, an evaporation pressure inner barrel 19, a control system and the like, the refrigerant water barrel 17 is provided with the refrigerant water return pipe 16, the refrigerant water pressure sensor 16 is connected with the refrigerant water pressure sensor 17, the refrigerant water balance pipe 17 is provided with the refrigerant water, and the refrigerant water balance pipe 17, and the refrigerant water is connected with the refrigerant water pressure sensor 17, and the refrigerant water is provided with the refrigerant water balance pipe 17, and the refrigerant water is connected with the refrigerant water bottom of the refrigerant barrel 17, and the refrigerant water drum 17.
In the scheme, the direct-fired lithium bromide absorption type low-temperature water chilling unit is an overlapping type water chilling unit.
In the above scheme, the cooling water is connected in series or in parallel.
Example 2:
in another embodiment, as shown in fig. 3, the vapor pressure sensor 19 is disposed in the vapor phase region of the evaporator cylinder.
Example 3:
in yet another embodiment, as shown in fig. 4, the evaporating pressure sensor 19 is not provided, and the evaporating temperature measured by the evaporating temperature sensor 12 corresponds to the evaporating pressure.
The device leads one path of refrigerant water from the outlet pipe of the refrigerant pump 10 to enter the bottom of the refrigerant water outer cylinder through the refrigerant water inlet outer cylinder pipe 14, the refrigerant water in the outer cylinder overflows into the refrigerant water inner cylinder 16, and then flows into the evaporator liquid sac through the refrigerant water liquid return sac pipe 13 by the liquid level difference, and the device is circulated continuously. The liquid level of the refrigerant in the outer cylinder is a fixed value, the water density of the refrigerant is changed along with the water pressure of the refrigerant measured by the refrigerant water pressure sensor 15, the temperature of the low-temperature cold water outlet is changed along with the evaporation pressure measured by the evaporation pressure sensor 19 (or the evaporation temperature measured by the evaporation temperature sensor 12 is changed along with the evaporation pressure), the measured water pressure of the refrigerant minus the evaporation pressure is equal to the water pressure difference of the refrigerant detected on line, the water pressure difference of the refrigerant corresponds to the water density of the refrigerant, a calculation formula and the corresponding relation are input into a control program, the touch screen of the unit directly displays the water density of the refrigerant, the water density of the refrigerant is controlled within a safe range by regulating the dilute solution bypass valve 11 according to the water density of the refrigerant, the reliability is improved, and the direct-fired lithium bromide absorption type low-temperature water chiller is in an optimal running state.
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 an on-line measuring density direct-fired lithium bromide absorption formula low temperature cooling water set, includes direct-fired high pressure generator (1), low pressure generator (2), condenser (3), evaporimeter (4), absorber (5), low temperature solution heat exchanger (6), high temperature solution heat exchanger (8), solution pump (9), coolant pump (10), thin solution bypass valve (11) and evaporation temperature sensor (12), its characterized in that: the unit drives the heat source to be fuel, the fuel is natural gas, artificial coal gas, light oil or heavy oil, the direct-fired high-pressure generator (1) is water pipe wet back type, dilute solution enters the direct-fired high-pressure generator (1) to concentrate into middle solution, the produced refrigerant steam enters the heat transfer pipe of the low-pressure generator (2) to be condensed into refrigerant water, the middle solution enters the low-pressure generator (2) to concentrate into concentrated solution after exchanging heat with the dilute solution through the high-temperature solution heat exchanger (8), the produced refrigerant steam enters the heat transfer pipe of the condenser (3) to be condensed into refrigerant water, the concentrated solution enters the absorber (5) to spray after exchanging heat with the dilute solution through the low-temperature solution heat exchanger (6), the refrigerant water enters the evaporator (4) to absorb heat to produce low-temperature cold water, the unit is additionally provided with a refrigerant water density on-line detection device, the refrigerant water density on-line detection device comprises a refrigerant water return bag pipe (13), a refrigerant water inlet outer barrel pipe (14), a refrigerant water pressure sensor (15), a refrigerant inner barrel (16), a refrigerant water balance pipe (17), a refrigerant water balance pipe (18) and a refrigerant inner barrel (16) are connected with the refrigerant water return pipe (16) in a water vapor phase, the refrigerant water inlet pipe (16) is provided with the bottom of the refrigerant water return pipe (16), the refrigerant water cylinder (16) is provided with a water circulation hole (16), the top of the refrigerant water outer cylinder (17) is connected with a refrigerant water balance pipe (18), and a refrigerant water pressure sensor (15) is arranged at the lower part of the refrigerant water outer cylinder (17).
2. The on-line detection density direct-fired lithium bromide absorption low-temperature water chilling unit according to claim 1, wherein the on-line detection density direct-fired lithium bromide absorption low-temperature water chilling unit is characterized in that: the device also comprises an evaporation pressure sensor (19), wherein the evaporation pressure sensor (19) is arranged at the top of the refrigerant water outer cylinder (17) or in the vapor phase region of the evaporator cylinder.
3. The on-line detection density direct-fired lithium bromide absorption type low-temperature water chilling unit according to claim 1 or 2, wherein: the direct-fired lithium bromide absorption type low-temperature water chilling unit is an overlapping type water chilling unit.
4. The on-line detection density direct-fired lithium bromide absorption type low-temperature water chilling unit according to claim 1 or 2, wherein: the cooling water of the direct-combustion lithium bromide absorption low-temperature water chilling unit is connected in series.
5. The on-line detection density direct-fired lithium bromide absorption type low-temperature water chilling unit according to claim 1 or 2, wherein: the cooling water of the direct-combustion lithium bromide absorption low-temperature water chilling unit is connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811606695.2A CN109458755B (en) | 2018-12-27 | 2018-12-27 | On-line detection density direct-fired lithium bromide absorption type low-temperature water chilling unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811606695.2A CN109458755B (en) | 2018-12-27 | 2018-12-27 | On-line detection density direct-fired lithium bromide absorption type low-temperature water chilling unit |
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| Publication Number | Publication Date |
|---|---|
| CN109458755A CN109458755A (en) | 2019-03-12 |
| CN109458755B true CN109458755B (en) | 2024-04-02 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1161437A (en) * | 1995-10-06 | 1997-10-08 | 株式会社日立制作所 | Absorption refrigerator and prodn. method thereof |
| CN1632420A (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 cryogen steam regulation and antifreeze device |
| CN2757044Y (en) * | 2004-12-31 | 2006-02-08 | 江苏双良空调设备股份有限公司 | Lithium bromide absorptive refrigerator with coolant steam regulating anti-freezing device |
| CN105466069A (en) * | 2015-12-25 | 2016-04-06 | 双良节能系统股份有限公司 | Heating-efficient energy saving direct combustion type lithium bromide absorption water cooling and heating unit system |
| CN209415824U (en) * | 2018-12-27 | 2019-09-20 | 双良节能系统股份有限公司 | A kind of on-line checking density direct-burning type lithium bromide absorption type low-temperature cold water unit |
-
2018
- 2018-12-27 CN CN201811606695.2A patent/CN109458755B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1161437A (en) * | 1995-10-06 | 1997-10-08 | 株式会社日立制作所 | Absorption refrigerator and prodn. method thereof |
| CN1632420A (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 cryogen steam regulation and antifreeze device |
| CN2757044Y (en) * | 2004-12-31 | 2006-02-08 | 江苏双良空调设备股份有限公司 | Lithium bromide absorptive refrigerator with coolant steam regulating anti-freezing device |
| CN105466069A (en) * | 2015-12-25 | 2016-04-06 | 双良节能系统股份有限公司 | Heating-efficient energy saving direct combustion type lithium bromide absorption water cooling and heating unit system |
| CN209415824U (en) * | 2018-12-27 | 2019-09-20 | 双良节能系统股份有限公司 | A kind of on-line checking density direct-burning type lithium bromide absorption type low-temperature cold water unit |
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| CN109458755A (en) | 2019-03-12 |
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