CN101988773A - Absorption type refrigerator - Google Patents
Absorption type refrigerator Download PDFInfo
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- CN101988773A CN101988773A CN2010102418771A CN201010241877A CN101988773A CN 101988773 A CN101988773 A CN 101988773A CN 2010102418771 A CN2010102418771 A CN 2010102418771A CN 201010241877 A CN201010241877 A CN 201010241877A CN 101988773 A CN101988773 A CN 101988773A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/62—Absorption based systems
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Abstract
The present invention provides an absorption type refrigerator which realizes refrigerant pump protection and can restrain temperature variation of refrigerant. An absorption type cold water and warm water dispenser (100) comprises the following components: a high-temperature regenerator (5), a low-temperature regenerator (6), a condenser (7), an evaporator (1) and an absorber (2). The evaporator (1) comprises the following components: a refrigerant pump (P3) which pumps the refrigerant accumulated in a refrigerant storing part (1B); a refrigerant pipe (34) for connecting the refrigerant pump (P3) with a dispenser (1C) which is configured above a heat transfer pipe (14A) of the cold/hot water pipe (14); and a proportional valve (61) which is equipped at the refrigerant pipe (34) and can adjust the opening of the valve in a stepless way.
Description
Technical field
The present invention relates to lodge in the liquid level control technology of the cold-producing medium in the evaporimeter.
Background technology
Usually known have a kind of Absorption Refrigerator, and it possesses: regenerator, and its heating contains the absorption liquid of cold-producing medium, makes the cold-producing medium gasification and separates from absorption liquid; Condenser, it will make its condensation by the refrigerant cools that this regenerator separates; Evaporimeter, it makes the cold-producing medium by this condenser condenses intersperse among the heat-transfer pipe that refrigerating medium passes through, and makes evaporation in the cold-producing medium housing under low pressure; And absorber, it will absorb (for example, with reference to patent documentation 1) in the absorption liquid by the cold-producing medium of described evaporator evaporation.In this kind Absorption Refrigerator, possess and draw the refrigerated medium pump that the cold-producing medium that lodges in the housing accumulates the cold-producing medium in the portion, by making this refrigerated medium pump continuous running, in evaporimeter, carry out the heat exchange of cold-producing medium and refrigerating medium, by to heat load (for example with this refrigerating medium, conditioner) circulation is supplied with, thus the cold and hot and warm room conditioning that is used in that Absorption Refrigerator is produced.
Patent documentation 1: the special fair 03-8465 communique of Japan
Yet; the liquid level of the cold-producing medium in the evaporimeter exists because the tendency of the big change that the concentration of absorption liquid etc. cause, in structure in the past, if the liquid level of the cold-producing medium in the evaporimeter reduces; then, the running of this refrigerated medium pump is stopped from the viewpoint of protection refrigerated medium pump.Therefore, refrigerated medium pump stop during do not carry out the heat exchange of cold-producing medium and refrigerating medium, therefore the refrigerant temperature change exists the problem that is difficult to suppress the temperature change of refrigerating medium and stably supplies with this refrigerating medium to heat load.
Summary of the invention
The present invention proposes in view of above-mentioned situation, and its purpose is to provide a kind of protection that realizes refrigerated medium pump, and can suppress the Absorption Refrigerator of change of the temperature of refrigerating medium.
In order to solve above-mentioned problem, the invention provides a kind of Absorption Refrigerator, it possesses: regenerator, its heating contains the absorption liquid of cold-producing medium, makes cold-producing medium gasification and separates from absorption liquid; Condenser, it will make its condensation by the refrigerant cools that this regenerator separates; Evaporimeter, it makes the cold-producing medium by this condenser condenses spread to the heat-transfer pipe that refrigerating medium passes through, and makes evaporation in the cold-producing medium housing under low pressure; Absorber, it will absorb by the cold-producing medium of described evaporator evaporation in the absorption liquid, and described Absorption Refrigerator is characterised in that described evaporimeter possesses: refrigerated medium pump, it draws the cold-producing medium that lodges in the described housing and accumulates cold-producing medium in the portion; Refrigerant pipe, it connects this refrigerated medium pump and the dispenser that is configured in the top of described heat-transfer pipe; Proportioning valve, it is arranged at this refrigerant pipe and can stepless adjustment valve opening.
According to this structure, by proportioning valve that can stepless adjustment valve opening in the refrigerant pipe setting, for example the valve opening of reduce in scale valve reduces the refrigerant flow that circulates in refrigerant pipe, can suppress the evaporation of the cold-producing medium that the heat exchange at heat-transfer pipe place causes thus, liquid level necessity of the cold-producing medium in the device that therefore can avoid evaporating reduces abovely.Can reduce the stop frequency that starts of refrigerated medium pump.Therefore, can suppress the change of refrigerant temperature and stably supply with this refrigerating medium to heat load.And, because the liquid level in the evaporimeter can necessary not reduce abovely, therefore need not to stop forcibly refrigerated medium pump, can realize the protection of this refrigerated medium pump fully.
On the basis of this structure, described Absorption Refrigerator also can adopt possess the cold-producing medium that detects in the described housing accumulate portion liquid level the level detection sensor and control the structure of the valve control device of described proportioning valve according to the testing result of this level detection sensor.According to this structure, come the valve opening of resize ratio valve according to the testing result of level detection sensor, can be adjusted at the refrigerant flow that circulates in the refrigerant pipe accurately thus, can be more simply and correctly carry out the management of liquid level that refrigerant liquid accumulates the cold-producing medium of portion.
In addition, described Absorption Refrigerator also can adopt possess detect the absorption liquid lodge in described absorber accumulate the absorption liquid in the portion concentration concentration testing agency and control the structure of the valve control device of described proportioning valve according to the testing result of this concentration testing agency.According to this structure, owing to can infer that according to the concentration of absorption liquid the cold-producing medium of evaporimeter accumulates the liquid level of the cold-producing medium of portion, therefore need not the level detection sensor to be set in addition, can carry out the management of liquid level that cold-producing medium accumulates the cold-producing medium of portion in the cold-producing medium portion of accumulating of evaporimeter.
In addition, the invention provides a kind of Absorption Refrigerator, it possesses: regenerator, and its heating contains the absorption liquid of cold-producing medium, makes cold-producing medium gasification and separates from absorption liquid; Condenser, it will make its condensation by the refrigerant cools that this regenerator separates; Evaporimeter, it makes the cold-producing medium by this condenser condenses spread to the heat-transfer pipe that refrigerating medium passes through, and makes evaporation in the cold-producing medium housing under low pressure; Absorber, it will absorb by the cold-producing medium of described evaporator evaporation in the absorption liquid, and described Absorption Refrigerator is characterised in that described evaporimeter possesses: refrigerated medium pump, it draws the cold-producing medium that lodges in the described housing and accumulates cold-producing medium in the portion; Refrigerant pipe, it connects this refrigerated medium pump and the dispenser that is configured in the top of described heat-transfer pipe; Revolution adjusting mechanism, it adjusts the rotating speed of described refrigerated medium pump.
According to this structure, by the revolution adjusting mechanism of the rotating speed of adjusting refrigerated medium pump is set, the rotating speed that for example reduces refrigerated medium pump reduces the refrigerant flow that circulates in refrigerant pipe, can suppress the evaporation of the cold-producing medium that heat exchange causes in the heat-transfer pipe thus, therefore the liquid level necessity of the cold-producing medium in the device of can avoiding evaporating reduces abovely, can reduce the stop frequency that starts of refrigerated medium pump.Therefore, can suppress the change of refrigerant temperature and stably supply with this refrigerating medium to heat load.And, reduce because the liquid level in the evaporimeter is unnecessary abovely, therefore need not stop refrigerated medium pump forcibly, can realize the protection of this refrigerated medium pump fully.
In this structure, described Absorption Refrigerator can possess the level detection sensor that the cold-producing medium that detects in the described housing accumulates the liquid level of portion, and described revolution adjusting mechanism is adjusted in the mode that reduces the rotating speed of described refrigerated medium pump along with the liquid level step-down that detects.According to this structure, when liquid level was low, the refrigerant amount by minimizing is drawn can suppress the evaporation of the cold-producing medium that heat exchange causes in the heat-transfer pipe, therefore refrigerated medium pump can turn round constantly, can suppress the change of refrigerant temperature and stably supplies with this refrigerating medium to heat load.
In addition, described Absorption Refrigerator can also possess and detects the concentration testing agency that the absorption liquid lodge in described absorber accumulates the absorption liquid concentration in the portion, and described revolution adjusting mechanism is adjusted in the mode that reduces the rotating speed of described refrigerated medium pump along with the absorption liquid concentration step-down that detects.According to this structure, accumulate the liquid level of cold-producing medium of portion when low at the cold-producing medium of the evaporimeter of inferring by the concentration of absorption liquid, reduce the refrigerant amount that draws, can suppress the evaporation of the cold-producing medium that heat exchange causes in the heat-transfer pipe thus, therefore refrigerated medium pump can turn round constantly, can suppress the change of refrigerant temperature and stably supplies with this refrigerating medium to heat load.And, by inferring that according to the concentration of absorption liquid the cold-producing medium of evaporimeter accumulates the liquid level of the cold-producing medium of portion, the cold-producing medium portion of accumulating that not be used in evaporimeter is provided with the level detection sensor in addition, just can carry out the management of liquid level that cold-producing medium accumulates the cold-producing medium of portion.
The invention effect
According to the present invention, by proportioning valve that can stepless adjustment valve opening in the refrigerant pipe setting, for example the valve opening of reduce in scale valve reduces the refrigerant flow that circulates in refrigerant pipe, can suppress the evaporation of the cold-producing medium that heat exchange causes in the heat-transfer pipe thus, liquid level necessity of the cold-producing medium in the device that therefore can avoid evaporating reduces abovely.Can reduce the stop frequency that starts of refrigerated medium pump.Therefore, can suppress the change of refrigerant temperature and stably supply with this refrigerating medium to heat load.And, reduce because the liquid level in the evaporimeter is unnecessary abovely, therefore need not stop refrigerated medium pump forcibly, can realize the protection of this refrigerated medium pump fully.
Description of drawings
Fig. 1 is the brief configuration figure of the absorption-type cold-hot water dispenser of present embodiment.
Fig. 2 is the figure of the relation of interior liquid level of the evaporimeter of expression present embodiment and proportioning valve aperture.
Fig. 3 is the brief configuration figure of the absorption-type cold-hot water dispenser of another embodiment.
Fig. 4 is the figure of the relation of expression rare absorption liquid concentration of this another embodiment and proportioning valve aperture.
Fig. 5 is the brief configuration figure of the absorption-type cold-hot water dispenser of another embodiment.
Fig. 6 is the figure of the relation of the liquid level in the evaporimeter of this another embodiment of expression and the rotating speed of refrigerated medium pump.
Fig. 7 is again the brief configuration figure of the absorption-type cold-hot water dispenser of an embodiment.
Fig. 8 is this figure of relation of the rotating speed of rare absorption liquid concentration of an embodiment and refrigerated medium pump again.
Symbol description:
1 evaporimeter
The 1B refrigerant liquid accumulates portion
2 absorbers
3 evaporimeter absorber tubes (housing)
5 high-temp regenerators (regenerator)
6 low-temperature regenerators (regenerator)
7 condensers
The rare absorption liquid pump of P1
P2 concentrated absorption solution pump
The P3 refrigerated medium pump
14 cold/hot water pipes
The 14A heat-transfer pipe
34 refrigerant pipes
35 branched pipes (bypass pipe)
40 solution control valves
50 control device (valve control device, revolution adjusting mechanism)
51 converters (revolution adjusting mechanism)
61 proportioning valves
62 level detection sensors
63 concentration detection sensors (concentration testing agency)
100 absorption-type cold-hot water dispensers (Absorption Refrigerator)
200 absorption-type cold-hot water dispensers (Absorption Refrigerator)
300 absorption-type cold-hot water dispensers (Absorption Refrigerator)
400 absorption-type cold-hot water dispensers (Absorption Refrigerator)
The specific embodiment
Below, with reference to accompanying drawing, one embodiment of the present invention is described.
Fig. 1 is the brief configuration figure of the absorption-type cold-hot water dispenser (absorption refrigerating machine) 100 of present embodiment.Absorption-type cold-hot water dispenser 100 for make water as cold-producing medium, use the double utility type absorption-type cold-hot water dispenser of lithium bromide (LiBr) aqueous solution as absorption liquid.
As shown in Figure 1, absorption-type cold-hot water dispenser 100 possesses evaporimeter 1, the absorber 2 that is set up in parallel with this evaporimeter 1, take in the evaporimeter absorber tube (housing) 3 of above-mentioned evaporimeter 1 and absorber 2, the high-temp regenerator (regenerator) 5 that possesses gas burner 4, low-temperature regenerator 6, the condenser 7 that is set up in parallel with this low-temperature regenerator 6, take in the low-temperature regenerator condenser tube 8 of above-mentioned low-temperature regenerator 6 and condenser 7, low temperature heat exchanger 12, high-temperature heat exchanger 13, cold-producing medium drainage heat exchanger 16, rare absorption liquid pump P1, concentrated absorption solution pump P2, refrigerated medium pump P3, above-mentioned each equipment connects via pipe arrangements such as absorption liquid pipe 21～25 and refrigerant pipes 31～36.
In addition, symbol 14 for be used for in evaporimeter with cold-producing medium carry out after the heat exchange refrigerating medium to not shown heat load (for example, conditioner) the cold/hot water pipe of circulation supply, the heat-transfer pipe 14A that forms the part of this cold/hot water pipe 14 is configured in the evaporimeter 1.Symbol 15 is to be used to make the cooling water cooling water pipe of absorber 2 and condenser 7 that circulates in turn, and each heat- transfer pipe 15A, 15B of forming the part of this cooling water pipe 15 are configured in respectively in absorber 2 and the condenser 7.Symbol 50 is the control device of the control of responsible absorption-type cold-hot water dispenser 100 integral body.
Rare absorption liquid pipe 21 branches into first rare absorption liquid pipe 21A and second rare absorption liquid pipe 21B in the downstream of rare absorption liquid pump P1 and solution control valve 40, first rare absorption liquid pipe 21A via cold-producing medium drainage heat exchanger 16, second rare absorption liquid pipe 21B via low temperature heat exchanger 12 after once more the interflow.And to the 5B of gas-bearing formation portion opening, the 5B of this gas-bearing formation portion is located at the top of the heat exchange department 5A that forms in the high temperature maker 5 to the other end of rare absorption liquid pipe 21 via high-temperature heat exchanger 13 backs.
High-temp regenerator 5 is that flame with gas burner 4 is as thermal source and to lodging in the regenerator that absorption liquid in the heat exchange department 5A carries out thermal regeneration, be formed with intermediate absorption fluid in the side of heat exchange department 5A and accumulate the 5C of portion, this intermediate absorption fluid accumulates the 5C of portion and accumulates intermediate absorption fluid by this heat exchange department 5A thermal regeneration.Accumulating the 5C of portion at this intermediate absorption fluid is provided with to detect and lodges in the liquid level sensor 52 that intermediate absorption fluid accumulates the liquid level of the absorption liquid in the 5C of portion (in the high-temp regenerator 5).
The lower end that one end and the intermediate absorption fluid of intermediate absorption fluid pipe 22 accumulates the 5C of portion is connected, and the other end of this intermediate absorption fluid pipe 22 is via the gas-bearing formation portion 6A opening of high-temperature heat exchanger 13 to formation in low-temperature regenerator 6.High-temperature heat exchanger 13 has been realized the reduction of the Fuel Consumption of the gas burner 4 in the high-temp regenerator 5 by the warm absorption liquid that flows that heats of the absorption liquid of the high temperature that accumulates the 5C of portion from middle absorption liquid and flow out rare absorption liquid pipe 21.And high-temperature heat exchanger 13 upstream sides of intermediate absorption fluid pipe 22 are connected by the absorption liquid pipe 23 that is provided with open and close valve V1 with absorber 2.
Low-temperature regenerator 6 is to be thermal source with the refrigerant vapour that separates by high-temp regenerator 5, the regenerator that the absorption liquid that forms below the 6A of gas-bearing formation portion accumulates the absorption liquid thermal regeneration in the 6B of portion will be lodged in, accumulate the 6B of portion at absorption liquid and dispose heat-transfer pipe 31A, this heat-transfer pipe 31A forms the part of the refrigerant pipe 31 that extends to the bottom of condenser 7 from the upper end of high-temp regenerator 5.By refrigerant vapour is circulated in this refrigerant pipe 31, the warm of refrigerant vapour accumulated absorption liquid transmission in the 6B of portion via above-mentioned heat-transfer pipe 31A to lodging in absorption liquid, and this absorption liquid further is concentrated.
One end of concentrated absorption solution pipe 24 accumulates the 6B of portion with the absorption liquid of low-temperature regenerator 6 and is connected, and the other end of this concentrated absorption solution pipe 24 is connected with the dope dispenser 2C on the gas-bearing formation portion 2B top that is arranged at absorber 2 via concentrated absorption solution pump P2 and low temperature heat exchanger 12.Low temperature heat exchanger 12 accumulates the warm rare absorption liquid that flows that heats of the concentrated absorption solution of the 6B of portion outflow among the second absorption liquid pipe 21B by the absorption liquid from low-temperature regenerator 6.In addition, upstream side at concentrated absorption solution pump P2 is provided with the bypass pipe 25 of walking around this concentrated absorption solution pump P2 and low temperature heat exchanger 12, when the running of concentrated absorption solution pump P2 stops, accumulating absorption liquid that the 6B of portion flows out by bypass pipe 25 and in absorber 2, do not supply with via low temperature heat exchanger 12 ground from the absorption liquid of low-temperature regenerator 6.
As mentioned above, the 5B of gas-bearing formation portion of high-temp regenerator 5 is connected by refrigerant pipe 31 with the bottom of condenser 7, this refrigerant pipe 31 accumulates heat-transfer pipe 31A and the cold-producing medium drainage heat exchanger 16 of the 6B of portion via the absorption liquid that is disposed at low-temperature regenerator 6, and the heat-transfer pipe 31A upstream side of this refrigerant pipe 31 is connected by the refrigerant pipe 32 that is provided with open and close valve V2 with the 2B of gas-bearing formation portion of absorber 2.And the bottom of condenser 7 is connected by the refrigerant pipe 33 that is provided with U-shaped sealing 33A with the 1A of gas-bearing formation portion of evaporimeter 1.In addition, accumulate the 1B of portion's (cold-producing medium accumulates portion) at the refrigerant liquid that is formed with the cold-producing medium after accumulating liquefaction below the evaporimeter 1, this refrigerant liquid accumulates the 1B of portion and is connected by the refrigerant pipe 34 that is provided with refrigerated medium pump P3 with the dispenser 1C on the gas-bearing formation portion 1A top that is configured in evaporimeter 1.In addition, the heat-transfer pipe 15B outlet side of cooling water pipe 15 is connected by the refrigerant pipe 36 that is provided with open and close valve V3 with the outlet side of the heat-transfer pipe 14A of cold/hot water pipe 14.
By the control of control device 50, the cooling operation that absorption-type cold-hot water dispenser 100 carries out from cold/hot water pipe 14 taking-up cold water.When cooling operation, the heat that drops into to absorption-type cold-hot water dispenser 100 by control device 50 control and make the evaporimeter 1 outlet side temperature of the refrigerating medium of supplying with to not shown heat load circulation via cold/hot water pipe 14 (for example cold water) become the design temperature of regulation, for example 7 ℃.Specifically, control device 50 is controlled the firepower of gas burner 4 as follows: all open and close valve V1～V3 are closed, start all pump P1～P3, and make gas combustion in gas burner 4, the temperature that makes the refrigerating medium of temperature sensor S1 instrumentation is 7 ℃ of regulation.
Rare absorption liquid of carrying to high-temp regenerator 5 via rare absorption liquid pipe 21 from absorber 2 by rare absorption liquid pump P1 this high-temp regenerator 5 by the burning gases heating based on the flame and the high temperature of gas burner 4, the therefore cold-producing medium evaporation separation in this rare absorption liquid.Cold-producing medium evaporation is separated and intermediate absorption fluid that concentration rises is carried to low-temperature regenerator 6 via high-temperature heat exchanger 13.In this low-temperature regenerator 6, intermediate absorption fluid is by supplying with the refrigerant vapour heating of the high temperature that flows into heat-transfer pipe 31A via refrigerant pipe 31 from high-temp regenerator 5, cold-producing medium further separates and the concentration of absorption liquid further improves, this concentrated absorption solution is carried to absorber 2 via concentrated absorption solution pump P2 and low temperature heat exchanger 12, and is scattered by the top from dope dispenser 2C.
On the other hand, in low-temperature regenerator 6, separate the cold-producing medium that generates and enter condenser 7 and condensation.Then, the refrigerant liquid that generates in condenser 7 enters evaporimeter 1 via refrigerant pipe 33, draws liquid by the running of refrigerated medium pump P3, thereby scatters to the heat-transfer pipe 14A of cold/hot water pipe 14 from dispenser 1C.
Spreading to refrigerant liquid on the heat-transfer pipe 14A obtains heat of gasification from the refrigerating medium of the inside by heat-transfer pipe 14A and evaporates, therefore the refrigerating medium of the inside by heat-transfer pipe 14A is cooled, like this, refrigerating medium after temperature descends is supplied with to heat load from cold/hot water pipe 14, thus the cooling running of freezing etc.
Then, the cold-producing medium of evaporation enters absorber 2 in evaporimeter 1, is absorbed by the concentrated absorption solution that passes through low-temperature regenerator 6 to supply with and scatter from the top, and the rare absorption liquid that lodges in absorber 2 accumulates the 2A of portion, and carry to high-temp regenerator 5 by rare absorption liquid pump P1, carry out above-mentioned circulation repeatedly.In addition, the heat that produces during absorption liquid absorption refrigeration agent is by being configured in the heat-transfer pipe 15A cooling of the cooling water pipe 15 in the absorber 2.
Yet, as described above, when absorption-type cold-hot water dispenser 100 carried out cooling operation, the refrigerant liquid that lodges in evaporimeter 1 accumulated the interior refrigerant liquid of the 1B of portion and is drawn by the running of refrigerated medium pump P3, scatters to the heat-transfer pipe 14A of cold/hot water pipe 14 from dispenser 1C.Spread to refrigerant liquid on this heat-transfer pipe 14A and obtain heat of gasification from the refrigerating medium of the inside by heat-transfer pipe 14A and evaporate, the refrigerating medium of the inside by heat-transfer pipe 14A is cooled thus.
On the other hand, there is following tendency in the liquid level that accumulates the 1B of portion of the refrigerant liquid in the evaporimeter 1: the influence owing to external interference for example descending as the temperature of following cooling water reduces produces big change.
Therefore; when the liquid level of cold-producing medium reduces; if the running of this refrigerated medium pump is stopped from the viewpoint of protection refrigerated medium pump P3; then refrigerated medium pump P3 stop during do not carry out the heat exchange of cold-producing medium and refrigerating medium; therefore the temperature change of refrigerating medium is difficult to suppress the temperature change of refrigerating medium and stably supplies with this refrigerating medium to heat load.
In the present embodiment, evaporimeter 1 constitutes and possesses: be arranged on refrigerant pipe 34 proportioning valve 61, detect refrigerant liquid in the evaporimeter 1 and accumulate the level detection sensor 62 of liquid level of the 1B of portion and the control device (valve control device) 50 that comes the aperture of resize ratio valve 61 according to the testing result of this level detection sensor 62.
Proportioning valve 61 be constitute can stepless adjustment valve opening motor-driven valve, move according to the control of control device 50.Level detection sensor 62 is sensors that for example the magnetostriction type sensor like that can stepless instrumentation liquid level, and its detection architecture is to control device 50 outputs.
This regulation aperture X% is meant, when the valve opening of reduce in scale valve 61, can not act on superfluous load at refrigerated medium pump P3, and the refrigerant liquid that can guarantee evaporimeter 1 liquid level that accumulates the 1B of portion does not reduce the aperture of the flow of degree.In addition, the liquid level of the benchmark when liquid level 100% is meant common running, liquid level 20% are meant and accumulate the height of portion 1B bottom surface with respect to this altitude datum apart from refrigerant liquid.
According to present embodiment, when the detected liquid levels of level detection sensor 62 reduced, control device 50 was according to this liquid level and the valve opening of reduce in scale valve 61, therefore circulation and reducing from the refrigerant amount that dispenser 1C scatters in refrigerant pipe 34.Therefore, can suppress the evaporation of the cold-producing medium that the heat exchange at the heat-transfer pipe 14A place of cold/hot water pipe 14 causes, liquid level H necessity that the refrigerant liquid in the device 1 that avoids evaporating accumulates the 1B of portion reduces abovely.Therefore, the stop frequency that starts of refrigerated medium pump P3 can be suppressed at Min., can suppress the change of refrigerant temperature and stably supply with this refrigerating medium to heat load.And, because accumulating the liquid level H of the 1B of portion, can necessary not reduce the refrigerant liquid in the evaporimeter 1 abovely, therefore need not to stop forcibly refrigerated medium pump P3, can realize the protection of this refrigerated medium pump P3 fully.
In this case, owing to reduce the refrigerant amount that scatters from dispenser 1C, therefore there is the tendency that rises in the temperature of the refrigerating medium of supplying with to heat load, but this ascensional range for example can not hinder cooling operation if compare then fully for a short time with the situation that refrigerated medium pump P3 stops.
On the other hand, rise if refrigerant liquid accumulates the liquid level H of the 1B of portion, then the valve opening of control device 50 exaggerated scale valves 61 increases the refrigerant amount that scatters from dispenser 1C thus.Thus, promote the evaporation of the cold-producing medium that the heat exchange at the heat-transfer pipe 14A place of cold/hot water pipe 14 causes, the refrigerating medium of the temperature that fully is cooled stably can be supplied with to heat load.
In addition, according to present embodiment, because control device 50 is adjusted the valve opening of this proportioning valve 61 according to liquid level, therefore can be adjusted at the refrigerant flow of circulation in the refrigerant pipe 34 accurately, can be more simply and correctly carry out the management of liquid level that refrigerant liquid accumulates the cold-producing medium of the 1B of portion.
Next, another embodiment is described.
Fig. 3 is the brief configuration figure of the absorption-type cold-hot water dispenser (absorption refrigerating machine) 200 of another embodiment.This absorption-type cold-hot water dispenser 200 is in that to possess on concentration detection sensor (concentration testing agency) 63 and control device (valve control device) 50 this point absorption-type cold-hot water dispenser 100 structures with above-mentioned different, wherein concentration detection sensor 63 detects the rare absorption liquids that lodge in the absorber 2 and accumulates rare absorption liquid concentration among the 2A of portion, and control device 50 comes the aperture of resize ratio valve 61 according to the testing result of this concentration detection sensor 63.Therefore other structure marks prosign and omits explanation owing to identical with absorption-type cold-hot water dispenser 100.
At this, as mentioned above since in absorber 2 in the evaporimeter 1 refrigerant vapour of evaporation absorb in the absorption liquid, therefore accumulate at rare absorption liquid of absorber 2 and accumulate the rare absorption liquid that has absorbed refrigerant vapour and diluted among the 2A of portion.In addition, because the path sealing of cold-producing medium circulation in absorption-type cold-hot water dispenser, therefore the refrigerant amount that circulates in this path is fixed.
Therefore, lodge in the concentration that rare absorption liquid accumulates the rare absorption liquid among the 2A of portion, can infer that the refrigerant liquid of evaporimeter 1 accumulates the liquid level H of the cold-producing medium of the 1B of portion by instrumentation.That is, when rare absorption liquid concentration reduces, owing to absorb cold-producing mediums a large amount of in the absorption liquid, so refrigerant liquid accumulates the liquid level H reduction of the 1B of portion.In addition, when rare absorption liquid concentration raises,, can infer that therefore refrigerant liquid accumulates the liquid level H rising of the 1B of portion because the refrigerant amount that absorbs in the absorption liquid reduces.The pass that rare absorption liquid concentration and refrigerant liquid accumulate the liquid level H of the 1B of portion ties up in the experiment tries to achieve, and in this structure, uses this to concern and manages the liquid level H that refrigerant liquid accumulates the 1B of portion.
Specifically, the cold-producing medium loading that is filled in the absorption liquid loading of absorber 2 and is filled in evaporimeter 1 is known value, the pre-filled volume of above-mentioned absorption liquid and cold-producing medium is designed to, making absorption liquid is that design (is for example turned round concentration, 57%) time, the liquid level H that the refrigerant liquid of evaporimeter 1 accumulates the 1B of portion is the such value of β (100%).Therefore, if know the concentration of rare absorption liquid, then on the basis of calculating as can be known how many cold-producing mediums be absorbed in the absorption liquid, therefore accumulate the volume (known) of the 1B of portion according to the refrigerant liquid of evaporimeter 1, can infer also remain how many cold-producing mediums, be the liquid level H that refrigerant liquid accumulates the 1B of portion.
According to this another embodiment, when concentration detection sensor 63 detected rare absorption liquid concentration reduce, can infer that cryogen liquid accumulates the liquid level H reduction of the 1B of portion, therefore control device 50 is according to this rare absorption liquid concentration and the valve opening of reduce in scale valve 61 reduces thus from the refrigerant amount of dispenser 1C distribution.Thus, can suppress the evaporation of the cold-producing medium that the heat exchange among the heat-transfer pipe 14A of cold/hot water pipe 14 causes, liquid level H necessity that the refrigerant liquid in the device 1 that can avoid evaporating accumulates the 1B of portion reduces abovely.Therefore, the stop frequency that starts of refrigerated medium pump P3 can be suppressed at Min., thereby can suppress the change of refrigerant temperature and stably supply with this refrigerating medium to heat load.And, because accumulating the liquid level H of the 1B of portion, can necessary not reduce the refrigerant liquid in the evaporimeter 1 abovely, therefore need not to stop forcibly refrigerated medium pump P3, can realize the protection of this refrigerated medium pump P3 fully.
In this case, owing to reduce the refrigerant amount that scatters from dispenser 1C, therefore there is the tendency that rises in the temperature of the refrigerating medium of supplying with to heat load, but this ascensional range for example can not hinder cooling operation if compare then fully for a short time with the situation that refrigerated medium pump P3 stops.
On the other hand, when control device 50 rises in concentration detection sensor 63 detected rare absorption liquid concentration, can infer that cryogen liquid accumulates the liquid level H rising of the 1B of portion, therefore according to this rare absorption liquid concentration and the valve opening of exaggerated scale valve 61 increases thus from the refrigerant amount of dispenser 1C distribution.Thus, promote the evaporation of the cold-producing medium that the heat exchange at the heat-transfer pipe 14A place of cold/hot water pipe 14 causes, the refrigerating medium of the temperature that fully is cooled stably can be supplied with to heat load.
In addition, according to present embodiment, because control device 50 is adjusted the valve opening of this proportioning valve 61 according to liquid level, therefore can be adjusted at the refrigerant flow of circulation in the refrigerant pipe 34 accurately, can be more simply and correctly carry out the management of liquid level that refrigerant liquid accumulates the cold-producing medium of the 1B of portion.
In addition, in this another embodiment, adopt working concentration detecting sensor 63 to detect the structure of rare absorption liquid concentration as concentration testing agency, but be not limited to this, for example also can adopt following structure: the absorption liquid that accumulates 1B of portion and absorber 2 at the refrigerant liquid of evaporimeter 1 accumulates the 2B of portion refrigerant temperature sensors and thin liquid temperature sensor (diagram is omitted) is set respectively, calculates rare absorption liquid concentration according to detected each refrigerant temperature of said temperature sensor and rare absorption liquid temperature.
Specifically, the physical parameter of absorption liquid (the LiBr aqueous solution) is popularized, and also can make its approximate expression.Can think that the rare absorption liquid in the absorber 2 is a saturation state, the concentration of this absorption liquid is the function of pressure and temperature, and pressure is absorber 2 internal pressures=evaporimeter 1 internal pressure=refrigerant saturation pressure P.Therefore therefore, refrigerant saturation pressure P can try to achieve according to refrigerant temperature, if the concentration that the pressure that will obtain according to this refrigerant temperature and rare absorption liquid concentration are brought the LiBr aqueous solution into is calculated approximate expression, then can calculate rare absorption liquid concentration.
According to this structure, accumulate the 2B of portion and the so simple structure of temperature sensor is set respectively just can detects rare absorption liquid concentration by accumulate 1B of portion and absorption liquid at refrigerant liquid, therefore, concentration sensor compares with being set, can form low cost and simple structure.
Next, another embodiment of the invention is described.
Fig. 5 is the brief configuration figure of the absorption-type cold-hot water dispenser (absorption refrigerating machine) 300 of another embodiment.This absorption-type cold-hot water dispenser 300 absorption-type cold-hot water dispenser 100 structures with above-mentioned on following structure are different: at refrigerant pipe 34 proportioning valve 61 is not set, and the converter 51 that possesses the operating frequency of adjusting refrigerated medium pump P3 is controlled the rotating speed of refrigerated medium pump P3 by this converter 51.Therefore other structure marks prosign and omits explanation owing to identical with absorption-type cold-hot water dispenser 100.In addition, in the present embodiment, possess converter 51 and control device 50 and the formation revolution adjusting mechanism.
This regulation rotating speed Y% is meant when reducing the rotating speed of refrigerated medium pump P3, and the refrigerant liquid that can guarantee evaporimeter 1 accumulates the rotating speed of the flow of the degree that the liquid level of the 1B of portion do not reduce, and represents by the ratio with respect to rated speed.In addition, the liquid level of the benchmark when liquid level 100% is meant common running, liquid level 20% are meant and accumulate the height of portion 1B bottom surface with respect to this altitude datum apart from refrigerant liquid.
According to this another embodiment, when level detection sensor 62 detected liquid levels reduce, control device 50 reduces the rotating speed of refrigerated medium pump P3 according to this liquid level, therefore circulation and reducing from the refrigerant amount that dispenser 1C scatters in refrigerant pipe 34.Therefore, can suppress the evaporation of the cold-producing medium that the heat exchange at the heat-transfer pipe 14A place of cold/hot water pipe 14 causes, liquid level H necessity that the refrigerant liquid in the device 1 that can avoid evaporating accumulates the 1B of portion reduces abovely.Therefore, the stop frequency that starts of refrigerated medium pump P3 can be suppressed at Min., can suppress the change of refrigerant temperature and stably supply with this refrigerating medium to heat load.And, because accumulating the liquid level H of the 1B of portion, can necessary not reduce the refrigerant liquid in the evaporimeter 1 abovely, therefore need not to stop forcibly refrigerated medium pump P3, can realize the protection of this refrigerated medium pump P3 fully.
In this case, because the refrigerant amount that scatters from dispenser 1C reduces, therefore there is the tendency that rises in the temperature of the refrigerating medium of supplying with to heat load, but this ascensional range for example can not hinder cooling operation if compare then fully for a short time with the situation that refrigerated medium pump P3 stops.
On the other hand, rise if refrigerant liquid accumulates the liquid level H of the 1B of portion, then control device 50 rises the rotating speed of refrigerated medium pump P3, increases the refrigerant amount that scatters from dispenser 1C thus.Thus, promote the evaporation of the cold-producing medium that the heat exchange at the heat-transfer pipe 14A place of cold/hot water pipe 14 causes, the refrigerating medium of the temperature that fully is cooled stably can be supplied with to heat load.
In addition, according to present embodiment, because control device 50 is according to the rotating speed of the stepless adjustment refrigerated medium pump of liquid level P3, therefore can be adjusted at the refrigerant flow of circulation in the refrigerant pipe 34 accurately, can be more simply and correctly carry out the management of liquid level that refrigerant liquid accumulates the cold-producing medium of the 1B of portion.
Next, an embodiment more of the present invention is described.
Fig. 7 is the brief configuration figure of the absorption-type cold-hot water dispenser (absorption refrigerating machine) 400 of an embodiment again.This absorption-type cold-hot water dispenser 400 absorption-type cold-hot water dispenser 300 structures with above-mentioned on following structure are different: replace level detection sensor 62 and possess to detect and lodge in the concentration detection sensor 63 that rare absorption liquid accumulates the concentration of the rare absorption liquid among the 2A of portion, control the rotating speed of refrigerated medium pump P3 according to this rare absorption liquid concentration.Therefore other structure marks prosign and omits explanation owing to identical with above-mentioned absorption-type cold-hot water dispenser 300.In addition, in the present embodiment, possess converter 51 and control device 50 and the formation revolution adjusting mechanism.
This regulation rotating speed Y% is meant when the rotating speed of refrigerated medium pump P3 reduces, and the refrigerant liquid that can guarantee evaporimeter 1 accumulates the rotating speed of the flow of the degree that the liquid level of the 1B of portion do not reduce, and represents by the ratio with respect to rated speed.In addition, liquid level 100% is meant the liquid level of the benchmark when common running, and liquid level 20% is meant and accumulates the height of portion 1B bottom surface with respect to this altitude datum apart from refrigerant liquid.
According to this embodiment again, when concentration detection sensor 63 detected rare absorption liquid concentration reduce, as mentioned above, can infer that cryogen liquid accumulates the liquid level H reduction of the 1B of portion, therefore control device 50 reduces the rotating speed of refrigerated medium pump P3 according to this rare absorption liquid concentration, reduces circulation in refrigerant pipe 34 thus and from the refrigerant amount of dispenser 1C distribution.Thus, can suppress the evaporation of the cold-producing medium that the heat exchange at heat-transfer pipe 34 places of cold/hot water pipe 14 causes, liquid level H necessity that the refrigerant liquid in the device 1 that can avoid evaporating accumulates the 1B of portion reduces abovely.Therefore, the stop frequency that starts of refrigerated medium pump P3 can be suppressed at Min., can suppress the change of refrigerant temperature and stably supply with this refrigerating medium to heat load.And, because accumulating the liquid level H of the 1B of portion, can necessary not reduce the refrigerant liquid in the evaporimeter 1 abovely, therefore need not to stop forcibly refrigerated medium pump P3, can realize the protection of this refrigerated medium pump P3 fully.
In this case, owing to reduce the refrigerant amount that scatters from dispenser 1C, therefore there is the tendency that rises in the temperature of the refrigerating medium of supplying with to heat load, but this ascensional range for example can not hinder cooling operation if compare then fully for a short time with the situation that refrigerated medium pump P3 stops.
On the other hand, when control device 50 rises in concentration detection sensor 63 detected rare absorption liquid concentration, can infer that cryogen liquid accumulates the liquid level H rising of the 1B of portion, therefore according to this rare absorption liquid concentration the rotating speed of refrigerated medium pump P3 is risen, increase the refrigerant amount that scatters from dispenser 1C thus.Thus, promote the evaporation of the cold-producing medium that the heat exchange at the heat-transfer pipe 14A place of cold/hot water pipe 14 causes, the refrigerating medium of the temperature that fully is cooled stably can be supplied with to heat load.
In addition, according to present embodiment, because control device 50 is according to the rotating speed of the stepless adjustment refrigerated medium pump of detected rare absorption liquid concentration P3, therefore can be adjusted at the refrigerant flow of circulation in the refrigerant pipe 34 accurately, can be more simply and correctly carry out the management of liquid level that refrigerant liquid accumulates the cold-producing medium of the 1B of portion.
Above-mentioned embodiment represents to be suitable for a mode of the present invention, the present invention is not limited to above-mentioned embodiment, for example, in the above-described embodiment, absorption-type cold-hot water dispenser is the double utility type, but certainly also can be applicable to headed by the substance effectiveness type, substance double utility and the absorption-type cold-hot water dispenser of triple effectiveness types and the evaporimeter of absorption heat pump unit.
Claims (6)
1. Absorption Refrigerator, it possesses: regenerator, its heating contains the absorption liquid of cold-producing medium, makes the cold-producing medium gasification and separates from absorption liquid; Condenser, it will make its condensation by the refrigerant cools that this regenerator separates; Evaporimeter, it makes the cold-producing medium by this condenser condenses spread to the heat-transfer pipe that refrigerating medium passes through, and makes evaporation in the cold-producing medium housing under low pressure; Absorber, it will absorb by the cold-producing medium of described evaporator evaporation in the absorption liquid, and described Absorption Refrigerator is characterised in that,
Described evaporimeter possesses: refrigerated medium pump, and it draws the cold-producing medium that lodges in the described housing and accumulates cold-producing medium in the portion; Refrigerant pipe, it connects this refrigerated medium pump and the dispenser that is configured in the top of described heat-transfer pipe; Proportioning valve, it is arranged at this refrigerant pipe and can stepless adjustment valve opening.
2. Absorption Refrigerator according to claim 1 is characterized in that,
Possess the cold-producing medium that detects in the described housing accumulate portion liquid level the level detection sensor and control the valve control device of described proportioning valve according to the testing result of this level detection sensor.
3. Absorption Refrigerator according to claim 1 is characterized in that,
Possess detect the absorption liquid lodge in described absorber accumulate the absorption liquid in the portion concentration concentration testing agency and control the valve control device of described proportioning valve according to the testing result of this concentration testing agency.
4. Absorption Refrigerator, it possesses: regenerator, its heating contains the absorption liquid of cold-producing medium, makes the cold-producing medium gasification and separates from absorption liquid; Condenser, it will make its condensation by the refrigerant cools that this regenerator separates; Evaporimeter, it makes the cold-producing medium by this condenser condenses spread to the heat-transfer pipe that refrigerating medium passes through, and makes evaporation in the cold-producing medium housing under low pressure; Absorber, it will absorb by the cold-producing medium of described evaporator evaporation in the absorption liquid, and described Absorption Refrigerator is characterised in that,
Described evaporimeter possesses: refrigerated medium pump, and it draws the cold-producing medium that lodges in the described housing and accumulates cold-producing medium in the portion; Refrigerant pipe, it connects this refrigerated medium pump and the dispenser that is configured in the top of described heat-transfer pipe; Revolution adjusting mechanism, it adjusts the rotating speed of described refrigerated medium pump.
5. Absorption Refrigerator according to claim 4 is characterized in that,
Possess the level detection sensor that the cold-producing medium that detects in the described housing accumulates the liquid level of portion, described revolution adjusting mechanism is adjusted in the mode that reduces the rotating speed of described refrigerated medium pump along with detected liquid level step-down.
6. Absorption Refrigerator according to claim 4 is characterized in that,
Possess and detect the concentration testing agency that the absorption liquid that lodges in described absorber accumulates the concentration of the absorption liquid in the portion, described revolution adjusting mechanism is adjusted in the mode that reduces the rotating speed of described refrigerated medium pump along with detected absorption liquid concentration step-down.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009-179299 | 2009-07-31 | ||
| JP2009179299A JP2011033262A (en) | 2009-07-31 | 2009-07-31 | Absorption type refrigerating machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101988773A true CN101988773A (en) | 2011-03-23 |
| CN101988773B CN101988773B (en) | 2012-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102418771A Expired - Fee Related CN101988773B (en) | 2009-07-31 | 2010-07-29 | Absorption type refrigerator |
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| Country | Link |
|---|---|
| JP (1) | JP2011033262A (en) |
| CN (1) | CN101988773B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06185830A (en) * | 1992-12-15 | 1994-07-08 | Kawaju Reinetsu Kogyo Kk | Absorption type refrigerator, cold/warm water machine and heat pump provided with steam turbine and compressor at absorber |
| JP3445941B2 (en) * | 1998-12-17 | 2003-09-16 | 株式会社 日立インダストリイズ | Multi-stage evaporative absorption type absorption chiller / heater and large temperature difference air conditioning system equipped with the same |
| CN2826322Y (en) * | 2005-02-05 | 2006-10-11 | 张跃 | Frequency conversion control apparatus for coolant pump lithium bromide absorption type water chilling and heating unit |
| KR100841655B1 (en) * | 2007-09-18 | 2008-06-26 | 주식회사신우이엔지 | Chiller heater with refining apparatus of absorption liquids |
-
2009
- 2009-07-31 JP JP2009179299A patent/JP2011033262A/en active Pending
-
2010
- 2010-07-29 CN CN2010102418771A patent/CN101988773B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06185830A (en) * | 1992-12-15 | 1994-07-08 | Kawaju Reinetsu Kogyo Kk | Absorption type refrigerator, cold/warm water machine and heat pump provided with steam turbine and compressor at absorber |
| JP3445941B2 (en) * | 1998-12-17 | 2003-09-16 | 株式会社 日立インダストリイズ | Multi-stage evaporative absorption type absorption chiller / heater and large temperature difference air conditioning system equipped with the same |
| CN2826322Y (en) * | 2005-02-05 | 2006-10-11 | 张跃 | Frequency conversion control apparatus for coolant pump lithium bromide absorption type water chilling and heating unit |
| KR100841655B1 (en) * | 2007-09-18 | 2008-06-26 | 주식회사신우이엔지 | Chiller heater with refining apparatus of absorption liquids |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101988773B (en) | 2012-11-21 |
| JP2011033262A (en) | 2011-02-17 |
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