CN100549564C - Absorption refrigerating machine - Google Patents
Absorption refrigerating machine Download PDFInfo
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- CN100549564C CN100549564C CNB2007101658579A CN200710165857A CN100549564C CN 100549564 C CN100549564 C CN 100549564C CN B2007101658579 A CNB2007101658579 A CN B2007101658579A CN 200710165857 A CN200710165857 A CN 200710165857A CN 100549564 C CN100549564 C CN 100549564C
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- cooling water
- pipeline
- absorption
- low temperature
- absorber
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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
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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
- 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
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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
- F25B2315/00—Sorption refrigeration cycles or details thereof
- F25B2315/006—Reversible sorption cycles
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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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/04—Refrigeration circuit bypassing means
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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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2501—Bypass valves
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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 present invention relates to absorption refrigerating machine, particularly double effect absorption refrigerating machine, when running stopped, under the situation that described cooling water pump starts separately, water at low temperature freezed in the device that can avoid evaporating conscientiously.High-temp regenerator, low-temperature regenerator, condenser, evaporimeter, absorber and high-temperature heat exchanger, low temperature heat exchanger connects by pipeline, and be provided with by passing through the cooling water pipeline of condenser inside behind the absorber inside, load-side water at low temperature pipeline by evaporimeter inside is set, the concentrated absorption solution pump of concentrated absorption solution is supplied with in setting to absorber from low-temperature regenerator, the self-absorption device is supplied with rare absorption liquid pump of rare absorption liquid to high-temp regenerator, reach to the refrigerating fluid distributor pipe of this evaporimeter and supply with the refrigeration liquid pump that stores at the refrigerating fluid of base of evaporator, supply with the cooling water pump of cooling water to described cooling water pipeline, when it stops in running, under the situation that cooling water pump starts separately, make the low temperature water pump interlock running of being located at load-side water at low temperature pipeline.
Description
Technical field
The present invention relates to absorption refrigerating machine, particularly double effect absorption refrigerating machine when running stops, can making the water at low temperature of evaporimeter internal load side not freeze.
Background technology
General, its high-temp regenerator of two-fold effect absorption refrigerating machine, low-temperature regenerator, condenser, evaporimeter, absorber and high-temperature heat exchanger, low temperature heat exchanger connect by pipeline, and by concentrated absorption solution pump, rare absorption liquid pump, refrigeration liquid pump and switch valve etc. are set, constitute the circulation line of absorption liquid system and the circulation line of refrigerant system in the significant points of pipeline.And then, the heat of evaporation of the refrigerating fluid by evaporimeter, the water at low temperature cooling that will return from load-side is supplied with to load-side, thereby is obtained refrigeration or refrigeration.And, being not only refrigeration, by switching pipeline, can also heat.Absorption liquid uses lithium bromide water solution usually, and cold-producing medium makes water.
In double effect absorption refrigerating machine, be provided with by passing through the cooling water pipeline of condenser inside behind the absorber inside, by making cooling water flow through this cooling water pipeline, at the concentrated absorption solution of the inside of absorber cooling from the distribution of concentrated absorption solution distributor pipe, improve the absorption of the refrigerant vapour that absorbs the flash-pot inflow absorber, at the refrigerant vapour of the inside of condenser cooling, realize making the condensation of refrigerating fluid condensation from low-temperature regenerator inflow condenser.
Two-fold effect absorption refrigerating machine, in the aircondition of for example office block or commercial refrigerator etc., use, because cooling tower (Network one リ Application グ ワ one) is arranged in the open, in running stops, there is because temperature reduces the situation that the cooling water in the cooling water pipe freezes.Cooling water is if freeze, then after when turning round once more, the cooling-water flow deterioration maybe can't be flowed and cause the performance reduction, and might cause the crack of cooling water pipeline or situation such as break.
In order to prevent this from occurring, using absorption refrigerating machine, constituting and to carry out in the aircondition of cooling operation, when this aircondition stops,, for example disclosing in the patent documentation 1 even temperature reduces, cooling water also uncongealable technology in cooling water pipe.In this case, be subject to ectocine, cooling water temperature in temperature also reduces easily when temperature reduces the cooling water pipe reduces, have the danger of freezing in, make the cooling water pump starting, supply with to cooling water pipe by being present in the cooling water that the relatively hot capacity greatly, is not subject to the cooling tower storage part of ectocine, prevent that the cooling water in the cooling water pipe from freezing.
Patent documentation 1 (Japan) spy opens 2001-99474
But above-mentioned prior art relates to the absorber that prevents cooling and absorbing formula refrigerator and the cooling water of condenser freezes, and is not to relate to preventing freezing of the water at low temperature that circulates between load-side and evaporimeter.About preventing freezing of this water at low temperature, do not take any method in the past, only be call user's attention.Only point out, be difficult to prevent conscientiously freezing of water at low temperature.
Summary of the invention
Purpose of the present invention is in the particularly double effect absorption refrigerating machine, when running stops, under the situation that cooling water pump starts separately, can prevent freezing of water at low temperature conscientiously.
As the device of reaching above-mentioned purpose, the absorption refrigerating machine of the invention of first aspect, its high-temp regenerator, low-temperature regenerator, condenser, evaporimeter, absorber and high-temperature heat exchanger, low temperature heat exchanger connects by pipeline, and be provided with the cooling water pipeline that after passing through the inside of absorber, passes through the inside of condenser, be provided with load-side water at low temperature pipeline by evaporimeter inside, be provided with concentrated absorption solution pump from low-temperature regenerator to absorber that supply with concentrated absorption solution from, the self-absorption device is supplied with rare absorption liquid pump of rare absorption liquid to high-temp regenerator, reach to the refrigerating fluid distributor pipe of being located at this evaporimeter top and supply with the refrigeration liquid pump that stores at the refrigerating fluid of base of evaporator, supply with the cooling water pump of cooling water to described cooling water pipeline, it is characterized in that, when running stops, under the situation that described cooling water pump starts separately, be located at the low temperature water pump interlock running of load-side water at low temperature pipeline.
The absorption refrigerating machine of the invention of second aspect, its high-temp regenerator, low-temperature regenerator, condenser, evaporimeter, absorber and high-temperature heat exchanger, low temperature heat exchanger connects by pipeline, and be provided with the cooling water pipeline that after passing through the inside of absorber, passes through the inside of condenser, be provided with the water at low temperature pipeline of the load-side of the inside by evaporimeter, be provided with concentrated absorption solution pump from low-temperature regenerator to absorber that supply with concentrated absorption solution from, the self-absorption device is supplied with rare absorption liquid pump of rare absorption liquid to high-temp regenerator, reach to the refrigerating fluid distributor pipe on the top of being located at this evaporimeter and supply with the refrigeration liquid pump that stores at the refrigerating fluid of base of evaporator, supply with the cooling water pump of cooling water to described cooling water pipeline, it is characterized in that, being provided with to be supplied with to the refrigerating fluid distributor pipe on the top of being located at this evaporimeter by described refrigeration liquid pump stores in the pipeline of the refrigerating fluid of base of evaporator, the refrigerating fluid bypass line that links refrigeration liquid pump downstream and absorber bottom, and on this refrigerating fluid bypass line, be provided with switch valve, when running stops, under the situation that described cooling water pump starts separately, open switch valve, the part of the refrigerating fluid in the evaporimeter is supplied with to absorber via the refrigerating fluid bypass line by the refrigeration liquid pump.
The absorption refrigerating machine of the invention of the third aspect, its high-temp regenerator, low-temperature regenerator, condenser, evaporimeter, absorber and high-temperature heat exchanger, low temperature heat exchanger connects by pipeline, and be provided with the cooling water pipeline that after passing through the inside of absorber, passes through the inside of condenser, be provided with the water at low temperature pipeline of the load-side of the inside by evaporimeter, be provided with concentrated absorption solution pump from low-temperature regenerator to absorber that supply with concentrated absorption solution from, the self-absorption device is supplied with rare absorption liquid pump of rare absorption liquid to high-temp regenerator, reach to the refrigerating fluid distributor pipe on the top of being located at this evaporimeter and supply with the refrigeration liquid pump that stores at the refrigerating fluid of base of evaporator, supply with the cooling water pump of cooling water to described cooling water pipeline, it is characterized in that, be provided with the water bypass pipe road in the downstream of the upstream side of the absorber that links described cooling water pipeline and absorber, and on this water bypass pipe road, be provided with switch valve, when running stops, under the situation that described cooling water pump starts separately, open switch valve, part or all that makes cooling water flows to the water bypass pipe road.
According to the invention of first aspect, in double effect absorption refrigerating machine, when running stops, under the situation that cooling water pump starts separately,, make that water at low temperature is not detained in evaporimeter by making the low temperature water pump interlock running of the water at low temperature pipeline of being located at load-side.Like this, can avoid the sub-cooled of the evaporimeter inner cryogenic water that causes by the influence of cooling water.Its result can prevent freezing of water at low temperature.
Invention according to second aspect, in double effect absorption refrigerating machine, when running stops, under the situation that cooling water pump starts separately, by opening switch valve, the part of refrigerating fluid is supplied with to absorber via the refrigerating fluid bypass line by the refrigeration liquid pump, thereby the concentration of the rare absorption liquid in the absorber is reduced.Like this, can the descending of, absorption refrigeration agent steam thinning by rare absorption liquid, and the spontaneous evaporation amount of the refrigerating fluid of flash-pot side is reduced.Its result can suppress the cooling of the water at low temperature that caused by heat of evaporation, prevents to freeze.
Invention according to the third aspect, in double effect absorption refrigerating machine, when running stops, under the situation that cooling water pump starts separately, flow to the water bypass pipe road by part or all that open switch valve, make cooling water, thereby can reduce flow by the cooling water of absorber inside.Like this, can suppress because the sub-cooled of the evaporimeter inner cryogenic water that the influence of the cooling water by absorber inside causes.Its result can prevent freezing of water at low temperature.
Description of drawings
Fig. 1 is the structure chart of first embodiment of expression absorption refrigerating machine of the present invention;
Fig. 2 is the flow chart of first embodiment of absorption refrigerating machine of the present invention;
Fig. 3 is the structure chart of second embodiment of expression absorption refrigerating machine of the present invention;
Fig. 4 is the flow chart of second embodiment of absorption refrigerating machine of the present invention;
Fig. 5 is the structure chart of the 3rd embodiment of expression absorption refrigerating machine of the present invention;
Reference numeral
1 high-temp regenerator
2 low-temperature regenerators
3 condensers
4 evaporimeters
5 absorbers
6 high-temperature heat exchangers
7 low temperature heat exchangers
8 rare absorption liquid pumps
9 burners
10 concentrated absorption solution pumps
11 cooling water pipelines
12 cooling water pumps
13 refrigeration liquid pumps
14 water at low temperature pipelines
15 low temperature water pumps
16,17,18 switch valves
19 refrigerating fluid bypass lines
20 switch valves
21 water bypass pipe roads
22 switch valves
Specific embodiment
Below, the embodiment to absorption refrigerating machine of the present invention describes with reference to accompanying drawing.Fig. 1 is the structure chart of first embodiment of expression absorption refrigerating machine of the present invention, high-temp regenerator 1, low-temperature regenerator 2, condenser 3, evaporimeter 4, absorber 5 and high-temperature heat exchanger 6, low temperature heat exchanger 7 etc. connect by pipeline, constitute the circulating path of absorption liquid system and the circulating path of refrigerant system.
Embodiment 1
In high-temp regenerator 1, accommodate the rare absorption liquid that returns via pipeline R1 by rare absorption liquid pump 8 self-absorption devices 5, this rare absorption liquid is through burner 9 heating, and the refrigerating fluid in rare absorption liquid becomes steam raising, separation.Like this, rare absorption liquid becomes middle concentrated absorption solution, supply with to low-temperature regenerator 2 via pipeline R2, midway, by high-temperature heat exchanger 6 time, by and flow through and carry out heat exchange between rare absorption liquid of described pipeline R1 and dispel the heat, be contained in the low-temperature regenerator 2.On the other hand, the refrigerant vapour of evaporation is supplied with to condenser 3 via pipeline R3, in the time of in passing through low-temperature regenerator 2, by and be contained in and carry out heat exchange between the middle concentrated absorption solution in this low-temperature regenerator 2 and dispel the heat, become the vapour-liquid mixed liquor, and then condensation and become refrigerating fluid, be contained in the bottom of condenser 3.
In low-temperature regenerator 2, by the middle concentrated absorption solution that described high-temp regenerator 1 is supplied with, by heating by the refrigerant vapour in the low-temperature regenerator 2, the refrigerating fluid in the middle concentrated absorption solution becomes steam raising, separation.Like this, middle concentrated absorption solution becomes concentrated absorption solution, supply with to absorber 5 via pipeline R4 by concentrated absorption solution pump 10, midway, by low temperature heat exchanger 7 time, by and flow through towards described high-temp regenerator 1 and carry out heat exchange between rare absorption liquid of pipeline R1 and dispel the heat, supply with to the absorption liquid distributor pipe 5a of absorber 5.On the other hand, the top in that the refrigerant vapour of low-temperature regenerator 2 evaporations is crossed dividing plate flows into condenser 3 one sides.
In condenser 3, the described refrigerant vapour that flows into from low-temperature regenerator 2, by by the cooling waters in the condenser 3 by cooling, condensation, become refrigerating fluid and accumulate in the bottom of condenser 3.After cooling water passes through in the absorber 5 by cooling water pump 12 via cooling water pipeline 11, in condenser 3.
In evaporimeter 4, the refrigerating fluid that accumulates in described condenser 3 bottoms is supplied to via pipeline R5, is supplied with to refrigerating fluid distributor pipe 4a via pipeline R6 by refrigeration liquid pump 13.The refrigerating fluid that distributes by this refrigerating fluid distributor pipe 4a, and by low temperature water pump 15 via water at low temperature pipeline 14 by carrying out heat exchange between the evaporimeter 4 inner water at low temperature that flow, heat absorption, evaporate.Lowered the temperature via the water at low temperature that water at low temperature pipeline 14 flows by this heat of evaporation, flash-pot 4 is supplied with to refrigerator even load (not shown) side.The water at low temperature Returning evaporimeter 4 that rises from the load-side temperature and circulating.On the other hand, the refrigerant vapour of evaporation passes through space portion inflow absorber 5 one sides in evaporimeter 4.
In absorber 5, the water quench that the concentrated absorption solution quilt that distributes from described absorption liquid distributor pipe 5a flows via described cooling water pipeline 11, by this concentrated absorption solution that is cooled, absorption refrigeration agent steam.If the concentration height and the liquid temperature of concentrated absorption solution are low, then the ability of absorption refrigeration agent steam is good.And then the concentrated absorption solution that has absorbed refrigerant vapour becomes rare absorption liquid and accumulates in the bottom of absorber 5.Lodge in rare absorption liquid of these absorber 5 bottoms, return high-temp regenerator 1 by described rare absorption liquid pump 8 via pipeline R1, but on the way, by low temperature heat exchanger 7 time, and flow to from low-temperature regenerator 2 and carry out heat exchange between the middle temperature concentrated absorption solution of absorber 5 and be heated, then, by high-temperature heat exchanger 6 time, and flow to from high-temp regenerator 1 and to carry out heat exchange between concentrated absorption solution in the high temperature of low-temperature regenerator 2 and, return high-temp regenerator 1 by after the heating once more.
Like this, constitute the circulating path of the absorption liquid system of high-temp regenerator 1 → (pipeline R2) → low-temperature regenerator 2 → (pipeline R4) → absorber 5 → (pipeline R1) → high-temp regenerator 1 circulation, and the refrigerant system circulating path of high-temp regenerator 1 → (pipeline R3) → condenser 3 → (pipeline R5) → evaporimeter 4 → (pipeline R6) → evaporimeter 4 → absorber 5 → (pipeline R1) → high-temp regenerator 1 circulation.
In addition, be located at branch from described pipeline R3, with the switch valve 16 on the pipeline R7 that absorber 5 is connected, be located at branch from pipeline R2, with the switch valve 17 on the pipeline R8 that absorber 5 is connected, and be located at branch from pipeline R6, all open with the switch valve 18 on the pipeline R9 that the bottom of absorber 5 is connected, inoperative cooling water pump 12, do not supply with cooling water to absorber 5 and condenser 3, give burner 9 igniting, heat rare absorption liquid by high-temp regenerator 1, then refrigerant vapour the supplying with to absorber 5 via the little pipeline R7 of flow path resistance that generates by this high-temp regenerator 1 midway from pipeline R3.And then, refrigerant vapour inflow evaporator 4 one sides of supplying with to absorber 5, via water at low temperature pipeline 14, with carry out heat exchange and condensation by the water at low temperature of evaporimeter 4 inside, by condensation heat heating water at low temperature at this moment.Supply with to load-side by the water at low temperature that will heat, can under heating mode, turn round.In addition, when turning round under refrigeration or frozen mode, described switch valve 16,17,18 is all closed.In addition, switch valve 16,17,18 all preferably can pass through the magnetic valve of control device (figure slightly) control.
In the running of above-mentioned heating mode, accumulate in the bottom of this evaporimeter 4 by the refrigerating fluid of evaporimeter 4 condensations, from refrigeration liquid pump 13, the way of among pipeline R6, flowing, via the little pipeline R9 of flow path resistance, supply with to absorber 5.And then, middle concentrated absorption solution by described high-temp regenerator 1 generation, in the way of pipeline R2,, supply with to absorber 5 via the little pipeline R8 of flow path resistance, in this absorber 5, mix with the refrigerating fluid of supplying with via pipeline R9, become rare absorption liquid, by rare absorption liquid pump 8, via pipeline R1, return high-temp regenerator 1.
In the present embodiment, under the situation of refrigeration or frozen mode running, prevent since winter outside air temperature low, the water at low temperature of evaporimeter 4 inside is freezed.Even the running of preferred absorption refrigerating machine stops, described cooling water pump 12 remains in operation, and cooling water is circulated in omitting illustrated cooling tower.Cooling tower is arranged in the open usually, under the situation of office block etc., is arranged on the roof mostly especially.Like this, be subject to the influence of outside air temperature, stop if being accompanied by the running of absorption refrigerating machine, the circulation of cooling water also stops, and then the cooling water in the cooling water pipe easily freezes.For fear of this situation,, also can make the cooling water circulation by running cooling water pump 12 even preferred in the absorption refrigerating machine running stops.
In the present embodiment, it is characterized in that when absorption refrigerating machine running stopped, described cooling water pump 12 was separately under the situations of starting, the low temperature water pump 15 on the water at low temperature pipeline 14 of load-side is located in the interlock running.After the running of absorption refrigerating machine stopped, running cooling water pump 12 made cooling water circulate at cooling tower, and this cooling water is via described cooling water pipeline 11, by absorber 5 when inner, and cooling absorber 5.
By cooling water will absorber cooling in 5, and be cooled in the evaporimeter 4 of these absorber 5 one, if water at low temperature via described water at low temperature pipeline 14, stores in evaporimeter 4,, can cause freezing of cooling water then by sub-cooled.Freezing of this cooling water, the area part in evaporimeter 4 not only also can spread all over the large-scale zone of water at low temperature pipeline 14, when absorption refrigerating machine turns round once more, flows and is hindered, and reduces as the function of thermal medium.Present embodiment can be avoided such situation.
Fig. 2 represents the flow chart of present embodiment.CRANK PULSES is when closing (OFF) in step S1, and the running of absorption refrigerating machine stops.CRANK PULSES is when opening (ON), and absorption refrigerating machine remains in operation.
When the CRANK PULSES of absorption refrigerating machine is OFF, in step S2, send the cooling water pump interlocking signal, this signal is under the situation of ON, and cooling water pump 12 starts separately, and the initiating signal of the low temperature water pump 15 of load-side is ON, the running of beginning interlock.And then during the cooling water pump interlocking signal was ON, low temperature water pump 15 continued the interlock running.When the cooling water pump interlocking signal was OFF, cooling water pump 12 stopped, and the initiating signal of low temperature water pump 15 also stops for OFF.
In the present embodiment, when the running of absorption refrigerating machine stops, under the situation that described cooling water pump 12 starts separately, owing to make low temperature water pump 15 and the running of cooling water pump 12 interlocks, and can make the water at low temperature circulation of water at low temperature pipeline 14.Therefore, via water at low temperature pipeline 14, water at low temperature can not be trapped in evaporimeter 4 inside, can avoid the sub-cooled of the water at low temperature that the influence by cooling water causes.Like this, can prevent to turn round stop in the freezing of water at low temperature.
Fig. 3 is the structure chart of the expression second embodiment of the present invention.In the present embodiment, give symbol same as described above, omit its detailed description with the parts of the described first embodiment same structure.In the present embodiment, it is characterized in that, will store refrigerating fluid in evaporimeter 4 bottoms by described refrigeration liquid pump 13, in the pipeline R6 that the refrigerating fluid distributor pipe 4a that is located at these evaporimeter 4 tops supplies with, the downstream of binding refrigeration liquid pump 13 and the refrigerating fluid bypass line 19 of absorber 5 bottoms are set, and on this refrigerating fluid bypass line 19, are provided with switch valve 20.In illustrated example, refrigerating fluid bypass line 19 utilizes described pipeline R9, forms as the bypass line in the upstream side of the described switch valve 18 that links this pipeline R9 and downstream.In addition, switch valve 20 preferred magnetic valve or the automatic flow valves etc. of using.
In the present embodiment, when the running of absorption refrigerating machine stops, under the situation that described cooling water pump 12 starts separately, open switch valve 20, the part of the refrigerating fluid in the evaporimeter 4 is supplied with to absorber 5 via refrigerating fluid bypass line 19 by refrigeration liquid pump 13.At this moment, switch valve 18 closures of pipeline R9.
In the delay of the bottom of evaporimeter 4 refrigerating fluid is arranged, after running stops, refrigerating fluid generation spontaneous evaporation in almost near the evaporimeter 4 of vacuum.Self-evaporating refrigerant vapour inflow absorber 5 one sides, the rare absorption liquid that is trapped in absorber 5 bottoms absorbs, and the heat of evaporation during by spontaneous evaporation is cooled off via the water at low temperature that water at low temperature pipeline 14 will be trapped in the evaporimeter 4.If water at low temperature by sub-cooled, can be freezed in the inside of evaporimeter 4.In the present embodiment, can avoid such situation.
Fig. 4 is the flow chart in the present embodiment.In step S1, when CRANK PULSES was OFF, the running of absorption refrigerating machine stopped.CRANK PULSES is that absorption refrigerating machine remains in operation under the situation of ON.
When the CRANK PULSES of absorption refrigerating machine is OFF, in step S2, send the cooling water pump interlocking signal, when this signal was ON, cooling water pump 12 started separately, and 13 startings of refrigeration liquid pump, and switch valve 20 was opened 5 minutes.Switch valve 20 cuts out immediately afterwards, and refrigeration liquid pump 13 stops.Like this, switch valve 20 open certain hour (for example 5 minutes) during in, by the refrigeration liquid pump 13 will accumulate in the refrigerating fluid of evaporimeter 4 inner bottom parts a part, by pipeline R6 via the little refrigerating fluid bypass line 19 of flow path resistance, in the bottom of absorber 5, supply with.On the other hand, when the cooling water pump interlocking signal was OFF, cooling water pump 12 stopped, and the initiating signal of low temperature water pump 15 also stops for OFF.
In the present embodiment, when the absorption refrigerating machine running stops, under the situation that cooling water pump 12 starts separately, owing to open switch valve 20, supply with the amount of defined with the part of the refrigerating fluid in the evaporimeter 4, by refrigeration liquid pump 13, via refrigerating fluid bypass line 19, to absorber 5, therefore, the concentration of the rare absorption liquid in the absorber 5 reduces.For this reason, to the absorbability reduction of self-evaporating refrigerant vapour in evaporimeter 4, can reduce the spontaneous evaporation amount that suppress refrigerating fluid by the pressure that suppress in the absorber 5.Self-evaporating refrigerant vapour amount reduces, and then can suppress the sub-cooled of the water at low temperature in the evaporimeter 4.Therefore, can prevent to turn round stop in the freezing of water at low temperature.
Fig. 5 is the structure chart of the expression third embodiment of the present invention.In the present embodiment, give symbol same as described above, omit its detailed description with the parts of the described first embodiment same structure.In the present embodiment, it is characterized in that, be provided with the water bypass pipe road 21 in the downstream of the upstream side of the absorber 5 that links described cooling water pipeline 11 and absorber 5, and on this water bypass pipe road 21, be provided with switch valve 22.
In the present embodiment, when absorption refrigerating machine running stopped, described cooling water pump 12 was separately under the situations of starting, opened a part that switch valve 22 makes cooling water, flowed via the little water bypass pipe road 21 of flow path resistance by cooling water pump 12.Therefore, can make via cooling water pipeline 11, the flow of cooling water by absorber 5 inside and reduce.Like this, suppress the sub-cooled of evaporimeter 4 inner cryogenic water, can prevent freezing of water at low temperature.In addition, absorption refrigerating machine is when turning round usually, and switch valve 22 cuts out.
The present invention is specially adapted to double effect absorption refrigerating machine, when running stops, and at cooling water pump separately under the situation of starting, the freezing of the device internal load side water at low temperature that can avoid evaporating.
Claims (1)
1. absorption refrigerating machine, its high-temp regenerator, low-temperature regenerator, condenser, evaporimeter, absorber and high-temperature heat exchanger, low temperature heat exchanger connects by pipeline, and be provided with the cooling water pipeline that after passing through the inside of absorber, passes through the inside of condenser, be provided with load-side water at low temperature pipeline by evaporimeter inside, be provided with concentrated absorption solution pump from low-temperature regenerator to absorber that supply with concentrated absorption solution from, the self-absorption device is supplied with rare absorption liquid pump of rare absorption liquid to high-temp regenerator, reach to the refrigerating fluid distributor pipe of being located at this evaporimeter top and supply with the refrigeration liquid pump that stores at the refrigerating fluid of base of evaporator, supply with the cooling water pump of cooling water to described cooling water pipeline, it is characterized in that
When running stops, under the situation that described cooling water pump starts separately, be located at the low temperature water pump interlock running of load-side water at low temperature pipeline.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006301626A JP2008116173A (en) | 2006-11-07 | 2006-11-07 | Absorption type refrigerating machine |
| JP301626/06 | 2006-11-07 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100073567A Division CN101672547B (en) | 2006-11-07 | 2007-11-07 | Absorption type refrigerating machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101178271A CN101178271A (en) | 2008-05-14 |
| CN100549564C true CN100549564C (en) | 2009-10-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007101658579A Expired - Fee Related CN100549564C (en) | 2006-11-07 | 2007-11-07 | Absorption refrigerating machine |
| CN2009100073567A Expired - Fee Related CN101672547B (en) | 2006-11-07 | 2007-11-07 | Absorption type refrigerating machine |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100073567A Expired - Fee Related CN101672547B (en) | 2006-11-07 | 2007-11-07 | Absorption type refrigerating machine |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2008116173A (en) |
| KR (1) | KR100865999B1 (en) |
| CN (2) | CN100549564C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011247508A (en) * | 2010-05-27 | 2011-12-08 | Sanyo Electric Co Ltd | Operation control method of exhaust gas type absorption chiller heater |
| JP2012077950A (en) * | 2010-09-30 | 2012-04-19 | Sanyo Electric Co Ltd | Valve device and absorption refrigerator using the same |
| JP5570969B2 (en) * | 2010-12-27 | 2014-08-13 | 三洋電機株式会社 | Exhaust gas heat recovery device and absorption refrigerator |
| KR101392707B1 (en) | 2013-04-17 | 2014-05-08 | 한국에너지기술연구원 | Absorption heating and cooling device |
| CN106482381B (en) * | 2016-11-14 | 2019-06-07 | 双良节能系统股份有限公司 | The steam type first-class lithium bromide absorption type heat pump unit of carrying vapour direct heating |
| JP7439522B2 (en) * | 2020-01-14 | 2024-02-28 | 株式会社アイシン | Automotive absorption heat pump device |
| JP2023019576A (en) * | 2021-07-29 | 2023-02-09 | 矢崎エナジーシステム株式会社 | Absorption-type refrigerator |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2765913B2 (en) * | 1989-02-14 | 1998-06-18 | 三洋電機株式会社 | Absorption refrigerator |
| CN1068669C (en) * | 1992-09-05 | 2001-07-18 | 三洋电机株式会社 | Single-and double-effect absorption refrigerator |
| CN1100974C (en) * | 1993-12-27 | 2003-02-05 | 达金工业株式会社 | Absorption refrigerator |
| JPH09101065A (en) * | 1995-10-02 | 1997-04-15 | Sanyo Electric Co Ltd | Method for controlling absorption refrigerating equipment |
| KR0177718B1 (en) * | 1996-03-26 | 1999-04-15 | 구자홍 | Ammonia absorptive cooler/heater |
| JP2001012820A (en) * | 1999-06-29 | 2001-01-19 | Hitachi Ltd | Absorption hot and chilled water generator, and method for operating the same |
| JP2001099474A (en) * | 1999-09-29 | 2001-04-13 | Sanyo Electric Co Ltd | Air conditioner |
| JP2002013834A (en) * | 2000-06-30 | 2002-01-18 | Ebara Corp | Absorption hot and chilled water generator |
| JP2003279186A (en) | 2002-03-26 | 2003-10-02 | Sanyo Electric Co Ltd | Absorption type refrigerator and method for controlling same |
| CN1312449C (en) * | 2003-07-23 | 2007-04-25 | 张跃 | Absorption type air-conditioning system |
-
2006
- 2006-11-07 JP JP2006301626A patent/JP2008116173A/en active Pending
-
2007
- 2007-06-29 KR KR1020070064949A patent/KR100865999B1/en not_active IP Right Cessation
- 2007-11-07 CN CNB2007101658579A patent/CN100549564C/en not_active Expired - Fee Related
- 2007-11-07 CN CN2009100073567A patent/CN101672547B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| KR20080041553A (en) | 2008-05-13 |
| CN101672547A (en) | 2010-03-17 |
| CN101178271A (en) | 2008-05-14 |
| KR100865999B1 (en) | 2008-10-29 |
| CN101672547B (en) | 2012-06-20 |
| JP2008116173A (en) | 2008-05-22 |
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