CN107525299B - Absorption refrigerating unit and pollution discharge control method thereof - Google Patents
Absorption refrigerating unit and pollution discharge control method thereof Download PDFInfo
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- CN107525299B CN107525299B CN201610472826.7A CN201610472826A CN107525299B CN 107525299 B CN107525299 B CN 107525299B CN 201610472826 A CN201610472826 A CN 201610472826A CN 107525299 B CN107525299 B CN 107525299B
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- absorber
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- discharging
- collecting tank
- discharge
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000006096 absorbing agent Substances 0.000 claims abstract description 71
- 239000010865 sewage Substances 0.000 claims abstract description 64
- 239000012535 impurity Substances 0.000 claims abstract description 47
- 238000007599 discharging Methods 0.000 claims abstract description 45
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical group [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 claims description 17
- 238000005057 refrigeration Methods 0.000 claims description 12
- 230000002745 absorbent Effects 0.000 claims description 5
- 239000002250 absorbent Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 abstract description 16
- 238000009826 distribution Methods 0.000 abstract description 14
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 230000000903 blocking effect Effects 0.000 abstract description 6
- 238000009825 accumulation Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 7
- 239000002245 particle Substances 0.000 description 7
- 230000007547 defect Effects 0.000 description 6
- 238000003466 welding Methods 0.000 description 6
- 230000002265 prevention Effects 0.000 description 5
- 239000002893 slag Substances 0.000 description 5
- 239000007921 spray Substances 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B15/00—Sorption machines, plants or systems, operating continuously, e.g. absorption type
- F25B15/02—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas
- F25B15/06—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas the refrigerant being water vapour evaporated from a salt solution, e.g. lithium bromide
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B37/00—Absorbers; Adsorbers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/003—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass for preventing corrosion
-
- 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 provides an absorption refrigerating unit, which comprises an absorber (1), wherein an opening is formed in the bottom of the absorber (1), the unit further comprises a sewage collecting and discharging device (2), the sewage collecting and discharging device (2) is arranged at the bottom of the absorber (1), and the sewage collecting and discharging device (2) comprises a sewage collecting groove (21) which is arranged at the central position of the lower side of the bottom of the absorber (1) and is communicated with the inside of the absorber (1) through the opening. The invention can well remove impurity residues caused by uncontrollable production process, can effectively prevent tiny impurities from blocking the liquid distribution device, and solves the problem of blocking the liquid distribution device of the unit due to tiny impurity accumulation. The invention also relates to a pollution discharge control method with the absorption refrigerating unit.
Description
Technical Field
The invention belongs to the technical field of refrigeration, and particularly relates to an absorption refrigeration unit and a pollution discharge control method thereof.
Background
The lithium bromide absorption unit has high requirement on the vacuum performance of the unit, so that the unit has more welding operations in the installation process, and a large amount of sundries such as welding slag and the like are necessarily generated in the installation process. Meanwhile, the lithium bromide solution has certain corrosiveness, and in order to slow down the corrosion of the unit in operation, the unit needs to be passivated before operation, namely, a layer of compact oxide film is formed by adding corrosion inhibitor into the solution to enable materials such as steel plates, heat exchange tubes and the like in the unit. As the passivation process proceeds, some impurities are also generated.
The liquid distribution device adopted by the lithium bromide products in the current mainstream mainly comprises a spraying device and a dripping device, and if more sundries such as welding slag, rust and the like are contained in the unit, the liquid distribution device is necessarily blocked, so that the refrigerating and heating properties of the unit are affected. Aiming at the phenomenon, the manufacturers mainly adopt the following measures for preventing the lithium bromide unit from being blocked at present.
1. And impurities such as welding slag, floating and sinking, floating rust and the like in the production process are strictly controlled. The cleaning work is paid attention to in each process of production. And (3) carrying out strict polishing and shoveling operation on sundries such as welding slag and the like.
2. By adopting the solution upper hole spraying technology, sundries such as welding slag and the like are accumulated at the bottom through solution upper hole spraying, so that the rear dripping device is not blocked.
The first method has uncontrollable factors, and the operation proficiency and experience of workers have important influence on the content of impurities. The second can inhibit the blockage of the liquid distribution device to a certain extent, but the inhibition effect on impurities with smaller particles is not obvious, and the blockage of dripping liquid distribution can be caused if small particles accumulate in the continuous circulation process of the system solution.
Because the anti-blocking measures of the lithium bromide absorption type refrigerating unit in the prior art have the technical problems that the influence of uncontrollable factors is large or the blocking of impurities with small particles cannot be effectively inhibited, and the like, the invention designs the absorption type refrigerating unit and a pollution discharge control method thereof.
Disclosure of Invention
Therefore, the invention aims to overcome the defects that the blockage prevention measures of the absorption type refrigerating unit in the prior art have larger influence of uncontrollable factors or have an effective inhibition effect on blockage of impurities with smaller particles, thereby providing the absorption type refrigerating unit and the pollution discharge control method thereof.
The invention provides an absorption refrigerating unit, which comprises an absorber, wherein an opening is formed in the bottom of the absorber, the unit further comprises a sewage collecting and discharging device, the sewage collecting and discharging device is arranged at the bottom of the absorber, and the sewage collecting and discharging device comprises a sewage collecting groove which is arranged at the central position of the lower side of the bottom of the absorber and is communicated with the inside of the absorber through the opening.
Preferably, the vertical cross section of the sewage collection tank along the longitudinal direction passing through the central axis of the absorber is rectangular in shape.
Preferably, the vertical cross section of the sewage collection tank along the longitudinal direction passing through the central axis of the absorber is triangular in shape.
Preferably, the sewage collecting and discharging device further comprises a discharging pipeline which is arranged at the bottom of the sewage collecting tank and communicated with the outside.
Preferably, a drain valve is also provided on the drain line.
Preferably, the device further comprises a discharge pipe arranged at the bottom of the sewage collecting tank and used for discharging the solution in the sewage collecting tank to the outside of the sewage collecting tank, one end of the discharge pipe extends out of the bottom of the sewage collecting tank and is higher than the inner bottom surface of the bottom of the sewage collecting tank, and the other end of the discharge pipe is communicated with the solution pump outside the absorber.
Preferably, the absorbent of the absorption refrigeration unit is lithium bromide.
The invention also provides a pollution discharge control method of the absorption type refrigerating unit, which utilizes the absorption type refrigerating unit to control the pollution discharge process of the unit through the pollution collecting and discharging device.
Preferably, when the dirt collecting and discharging device comprises a discharging pipeline and a discharging valve, and when the impurities in the absorber accumulate for a period of time, the discharging valve is opened for discharging dirt; and when the impurity content of the solution in the absorber is low, closing the discharge valve to stop pollution discharge.
Preferably, when the solution content in the absorber is low, the solution is filled inside the absorber through the discharge line.
The absorption refrigerating unit and the pollution discharge control method thereof have the following beneficial effects:
1. the defects that the blockage prevention measures of the absorption refrigerating unit are large in influence of uncontrollable factors or cannot effectively inhibit blockage of impurities with smaller particles are overcome, impurity residues caused by uncontrollable impurities in the production process can be well removed, tiny impurities can be effectively prevented from blocking the liquid distribution device, and the problem that tiny impurity accumulation blocks the liquid distribution device of the unit is solved;
2. meanwhile, the pump body fault probability of the solution pump caused by impurities in the solution can be effectively reduced, and the stable operation of the unit is facilitated.
Drawings
FIG. 1 is a schematic view of the absorber portion of a first embodiment of an absorption refrigeration unit having a dirt collection discharge apparatus of the present invention;
FIG. 2 is a cross-sectional view taken in the direction A-A of FIG. 1;
FIG. 3 is a schematic diagram of the absorber portion of a second embodiment of an absorption chiller unit having a dirt collection discharge apparatus of the present invention;
fig. 4 is a sectional view in the direction B-B of fig. 3.
The reference numerals in the drawings are as follows:
1-absorber, 2-dirt collecting and discharging device, 21-dirt collecting tank, 22-discharging pipeline, 23-discharging valve and 3-discharging pipe.
Detailed Description
As shown in fig. 1 to 4, the present invention provides an absorption refrigeration unit, comprising an absorber 1 provided with an opening at the bottom of the absorber 1, and further comprising a sewage collecting and discharging device 2, wherein the sewage collecting and discharging device 2 is arranged at the bottom of the absorber 1, and the sewage collecting and discharging device 2 comprises a sewage collecting tank 21 which is arranged at the central position of the lower side of the bottom of the absorber 1 and is communicated with the interior of the absorber 1.
Because the liquid level of the solution in the inner cavity of the absorber is higher, and the solution moves and even rotates, impurities in the solution of the absorber can be effectively contained in the sewage collecting tank through the sedimentation of gravity by arranging the sewage collecting tank communicated with the inside of the absorber at the lower side of the lower bottom surface of the absorber, and the situation of blockage caused by the existence of the impurities in parts such as a liquid distribution device in a unit is prevented; the defect that the blockage prevention measures of the absorption refrigerating unit have the defects that either uncontrollable factors (due to manual operation) have large influence or the blockage of impurities with small particles cannot be effectively inhibited is overcome, impurity residues caused by uncontrollable production in the production process can be well removed, the tiny impurities can be effectively prevented from blocking the liquid distribution device, and the problem that tiny impurity accumulation blocks the liquid distribution device of the unit is solved.
The function of disposing the sump 21 at the central position of the bottom of the absorber 1 is to: because the solution in the absorber continuously flows, the probability of impurities which are settled down from the central position is larger than that of the edge position, and therefore, the impurities in the solution can be effectively settled down into the sewage collecting tank by arranging the sewage collecting tank at the central position of the bottom of the absorber, and the functions and effects of pollution discharge, impurity discharge and blockage prevention are improved.
As shown in fig. 1 to 2, the vertical cross section of the sewage collecting tank 21 along the longitudinal direction passing through the central axis of the absorber 1 is preferably rectangular in shape. The sewage collecting tank is arranged in a cuboid structure, the top surface is attached to the lower bottom surface of the absorber, the bottom surface is a plane, the long edge of the cuboid extends along the long edge direction of the absorber, the structure is convenient and quick to process, and the sewage collecting tank can be fixed on the lower bottom surface of the absorber in a screw, bolt or bonding mode or the like and can be integrally formed with the absorber.
Further preferably, the rectangular parallelepiped sewage collecting tank 21 has a rectangular vertical cross-sectional shape along the short side direction of the absorber 1 and passing through the central axis of the absorber 1.
As shown in fig. 3 to 4, the vertical cross section of the sewage collecting tank 21 along the longitudinal direction passing through the central axis of the absorber 1 is preferably triangular in shape. By setting the cross section of the dirt collecting tank as a triangular cross section, a triangular prism extending along the short side direction of the absorber can be effectively formed, two points in the triangular cross section are all positioned on the bottom surface of the lower part of the absorber 1, namely, the upper surface of the triangular prism is a plane and is attached to the bottom surface of the absorber, and the lowest point of the other point in the triangular cross section in the vertical direction is the lowest end of the triangular prism. Because the liquid level is higher in the absorber, the flow of the solution is relatively stable, and the structure can enable fine impurities flowing along with the circulation of the solution to be settled at the bottom of the sewage collecting tank under the action of gravity and accumulated at the bottom (the impurities in the absorber are stored and accumulated at the position of the lowest end of the triangular prism), so that the impurities are effectively and conveniently discharged from the absorber, and the sewage discharging efficiency is improved.
Further preferably, the vertical cross-sectional shape of the sewage collecting tank 21 along the short side direction of the absorber 1 and passing through the central axis of the absorber 1 is a rectangular shape.
Preferably, the sewage collecting and discharging device 2 further includes a discharging pipe 22 provided at the bottom (or lowermost end) of the sewage collecting tank 21 and communicated to the outside. The sewage such as impurities can be effectively discharged out of the sewage collecting tank by arranging the discharge pipeline communicated to the outside at the bottom (or the lowest end) of the sewage collecting tank.
A drain valve 23 is preferably also provided on the drain line 22. The discharge valve can effectively control the discharge process according to the needs and actual conditions, and the purpose and the effect of opening, closing or increasing or reducing the opening degree to control the discharge flow are achieved.
Preferably, the device further comprises a discharge pipe 3 arranged at the bottom of the sewage collecting tank 21 for discharging the solution in the sewage collecting tank 21 to the outside thereof, one end of the discharge pipe 3 extends out of the bottom of the sewage collecting tank 21 and is higher than the inner bottom surface of the bottom of the sewage collecting tank 21, and the other end is communicated with a solution pump (not shown) outside the absorber 1. The solution pump and the discharge pipe connected with the absorber are arranged, so that the solution after the absorption effect at the bottom of the absorber can be effectively discharged into the solution pump through the discharge pipe, and conditions are provided for realizing refrigeration cycle; further, by disposing one end of the drain pipe at a position higher than the bottom inner bottom surface (i.e., the lowermost end of the bottom surface) of the sewage collecting tank, it is possible to effectively prevent the solution pump from sucking the deposited impurities to the bottom of the sewage collecting tank, and to reduce the failure probability of the solution pump due to the suction of the solution impurities.
Preferably, the absorber 1 is supplemented with absorbent by means of upper hole spraying. The large solid impurities can be left at the bottom of the spray pipe in a spray mode of the upper hole, and the spray pipe is mainly used for preventing the small holes at the rear part of the spray device from being blocked.
Preferably, the absorbent of the absorption refrigeration unit is lithium bromide. This is a preferred class of absorbent for the absorption refrigeration unit of the present invention, i.e., forming a lithium bromide absorption refrigeration unit.
The invention also provides a pollution discharge control method of the absorption type refrigerating unit, which utilizes the absorption type refrigerating unit to control the pollution discharge process of the unit through the pollution collecting and discharging device 2. By utilizing the absorption refrigerating unit and controlling the pollution discharge process of the unit through the pollution collecting and discharging device, impurities in the absorber solution can be effectively stored in the pollution collecting tank through the sedimentation of gravity, so that the situation of blockage caused by the existence of impurities in parts such as a liquid distribution device in the unit is prevented; the defect that the blockage prevention measures of the absorption refrigerating unit have the defects that either uncontrollable factors (due to manual operation) have large influence or the blockage of impurities with small particles cannot be effectively inhibited is overcome, impurity residues caused by uncontrollable production in the production process can be well removed, the tiny impurities can be effectively prevented from blocking the liquid distribution device, and the problem that tiny impurity accumulation blocks the liquid distribution device of the unit is solved.
Preferably, when the sewage collecting and discharging device 2 comprises a discharging pipeline 22 and a discharging valve 23, and when impurities in the absorber 1 accumulate for a period of time, the discharging valve 23 is opened for sewage discharging; when the impurity content of the solution in the absorber 1 is low, the discharge valve 23 is closed to stop the sewage discharge. The sewage is discharged through the specific operation steps and forms of the sewage collecting and discharging device through the discharging valve according to actual conditions, and the aim and the effect of stopping the sewage when the impurity amount is large and the impurity amount is small can be achieved.
Preferably, when the solution content in the absorber 1 is small, the (certain amount of) solution is filled from the outside into the absorber 1 through the discharge pipeline 22, thereby achieving the purpose and effect of maintaining the stability of the solution amount in the unit.
It will be readily appreciated by those skilled in the art that the above advantageous ways can be freely combined and superimposed without conflict.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention. The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present invention, and these modifications and variations should also be regarded as the scope of the invention.
Claims (6)
1. An absorption refrigeration unit comprising an absorber (1), characterized in that: an opening is formed in the bottom of the absorber (1), the unit further comprises a sewage collecting and discharging device (2), the sewage collecting and discharging device (2) is arranged at the bottom of the absorber (1), and the sewage collecting and discharging device (2) comprises a sewage collecting tank (21) which is arranged at the central position of the lower side of the bottom of the absorber (1) and is communicated with the interior of the absorber (1) through the opening; the sewage collecting and discharging device (2) further comprises a discharging pipeline (22) which is arranged at the bottom of the sewage collecting tank (21) and communicated to the outside, and a discharging valve (23) is further arranged on the discharging pipeline (22); the device also comprises a discharge pipe (3) arranged at the bottom of the sewage collecting tank (21) and used for discharging the solution in the sewage collecting tank (21) to the outside, one end of the discharge pipe (3) extends into the bottom of the sewage collecting tank (21) and is higher than the inner bottom surface of the bottom of the sewage collecting tank (21), and the other end of the discharge pipe is communicated with the solution pump outside the absorber (1); opening the discharge valve (23) for discharging the sewage after the impurities in the absorber (1) accumulate for a period of time; when the impurity content of the solution in the absorber (1) is low, the discharge valve (23) is closed, and the pollution discharge is stopped.
2. An absorption chiller according to claim 1 wherein: the shape of the vertical cross section of the sewage collecting tank (21) along the long side direction passing through the central axis of the absorber (1) is a rectangular cross section.
3. An absorption chiller according to claim 1 wherein: the vertical cross section of the sewage collecting tank (21) along the longitudinal direction passing through the central axis of the absorber (1) is triangular.
4. An absorption refrigeration unit according to any one of claims 1 to 3 wherein: the absorbent of the absorption refrigerating unit is lithium bromide.
5. A pollution discharge control method of an absorption refrigerating unit is characterized in that: -controlling the blowdown process of an absorption refrigeration unit according to one of claims 1 to 4 by means of said blowdown discharge device (2); opening the discharge valve (23) for discharging the sewage after the impurities in the absorber (1) accumulate for a period of time; when the impurity content of the solution in the absorber (1) is low, the discharge valve (23) is closed, and the pollution discharge is stopped.
6. The pollution discharge control method according to claim 5, wherein: when the solution content in the absorber (1) is low, the solution is filled from the outside into the absorber (1) through the discharge pipeline (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610472826.7A CN107525299B (en) | 2016-06-22 | 2016-06-22 | Absorption refrigerating unit and pollution discharge control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610472826.7A CN107525299B (en) | 2016-06-22 | 2016-06-22 | Absorption refrigerating unit and pollution discharge control method thereof |
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| CN107525299A CN107525299A (en) | 2017-12-29 |
| CN107525299B true CN107525299B (en) | 2023-06-13 |
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| CN2244706Y (en) * | 1995-11-28 | 1997-01-08 | 王宏丁 | First automatic residue-removing filter for lithium bromide refrigerator |
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| CN107525299A (en) | 2017-12-29 |
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