CN105423413A - Refrigerating system of machine room - Google Patents
Refrigerating system of machine room Download PDFInfo
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- CN105423413A CN105423413A CN201410487851.3A CN201410487851A CN105423413A CN 105423413 A CN105423413 A CN 105423413A CN 201410487851 A CN201410487851 A CN 201410487851A CN 105423413 A CN105423413 A CN 105423413A
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Abstract
The invention relates to the technical field of refrigerating equipment and discloses a refrigerating system of a machine room. The refrigerating system comprises a compressor unit, a condenser, a liquid pump, an evaporator set and a second check valve connected with the compressor unit in parallel through a first bypass, wherein the compressor unit, the condenser, the liquid pump and the evaporator set are sequentially connected through pipelines and form a closed cycle. The compressor unit comprises at least one compression unit; each compression unit comprises a compressor and a first check valve. When at least two compression units are arranged, the at least two compression units are arranged in parallel. The evaporator set comprises at least one evaporation unit; each evaporation unit comprises an evaporator and a throttle mechanism. When at least two evaporation units are arranged, the at least two evaporation units are arranged in parallel. Besides, the number of the compression units and the number of the evaporation units are not one at the same time. According to the refrigerating system of the machine room, the whole machine capacity adjusting range of the system can be better broadened, and the energy consumption is reduced by means of natural cold sources.
Description
Technical field
The present invention relates to technical field of refrigeration equipment, particularly relate to a kind of refrigeration system of machine room.
Background technology
Data center, is commonly called as machine room, is the facility of a whole set of complexity.It not only comprises department of computer science and to unify other equipment supporting with it (such as communication and storage system), also comprises the data communication connection of redundancy, environmental control equipment, watch-dog and various safety device.The IT machine equipments such as a large amount of computers and server are run in existing machine room, along with the development of material science, in machine room, the volume of various communication apparatus constantly reduces, but its transmission and the information content stored are improving constantly, cause the power density of unit rack and heat density significantly to improve, make long-standing temperature distributing disproportionation in machine room, air current composition disorderly and be core with IT machine equipment problems such as " focuses " seems more outstanding simultaneously.And these problems all can have influence on the service life of calculator room equipment and the security reliability of operation.In addition, the ratio that energy cost accounts for machine room operation cost is higher, electric power only lower than half is used for IT load, and machine room energy consumption for cooling accounts for 38% ~ 50% of the overall energy consumption of machine room, therefore, under the overall background making every effort to meet ever-increasing radiating requirements and energy saving requirement in machine room, the main development direction that efficient and energy-conservation machine room refrigeration system has become.
The researcher of refrigeration industry has carried out exploration for many years in energy-saving field, but the shortcoming of current machine room refrigeration system following several respects of ubiquity in energy-conservation: the adjustable range of complete machine capacity is generally less than normal, and when there is larger change in machine room thermic load, for meeting machine room humiture demand, the frequent frequent start-stop of unit and running under full capacity all the time, the reliability of such unit is all lower with Energy Efficiency Ratio; In natural coldness resource utilizing field, the methods such as traditional fresh air refrigerating, gas heat exchange refrigeration and ethylene glycol cool naturally have exposed shortcomings in application process, as New atmosphere quality be difficult to accurate control, relevant device takies large, the broken ring machine room building structure of machine room area, indoor fan windage is large, in addition, traditional heat pipe Natural Circulation has good energy-saving effect, but easily there is the problems such as cold-producing medium is short of power and internal circulating load is little, cause heat exchange efficiency to reduce, refrigeration is limited.
The defect that prior art exists is, complete machine capacity regulating scope is less, and the reliability of refrigeration system is lower, and energy consumption is larger.
Summary of the invention
The invention provides a kind of refrigeration system of machine room, in order to improve the adjustable range of complete machine capacity, reduce the energy consumption for cooling of machine room, and then improve energy utilization rate.
The refrigeration system of machine room of the present invention, comprising:
Connected successively by pipeline and form the compressor bank of closed cycle, condenser, liquid pump and evaporator bank, wherein:
Described compressor bank comprises at least one compression unit, each described compression unit comprises compressor, and the first check valve on pipeline between described compressor and described condenser, when the quantity of described compression unit is at least two, at least two compression units are arranged in parallel;
By the second check valve that the first bypass and described compressor bank are connected in parallel;
Described evaporator bank comprises at least one evaporation element, each described evaporation element comprises evaporimeter, and the throttle mechanism on pipeline between described evaporimeter and liquid pump, when the quantity of described evaporation element is at least two, at least two evaporation elements are arranged in parallel
Wherein, be one when the quantity of compression unit is different with the quantity of evaporation element.
Described refrigeration system, also comprises:
Be arranged at the first magnetic valve on the pipeline between described compressor bank and evaporator bank and in parallel with described second check valve.
Preferably, described compressor bank comprises at least two compression units, and described evaporator bank comprises an evaporation element; Or described compressor bank comprises a compression unit, and described evaporator bank comprises at least two evaporation elements.
Preferably, described refrigeration system, also comprises:
Be arranged at the gas-liquid separator on the pipeline between described compressor bank and described first magnetic valve.
Preferably, described first magnetic valve is communicated with by inlet tube with described gas-liquid separator, and described gas-liquid separator is communicated with by an outlet with the tube connector being connected each described compressor inlet; Or described first magnetic valve is communicated with by inlet tube with described gas-liquid separator, described gas-liquid separator is communicated with respectively by outlet with each described compressor inlet.
Preferably, described refrigeration system, also comprises:
Be arranged at the oil eliminator on the pipeline between described compressor bank and described condenser;
Be arranged at the 3rd check valve on the pipeline between described oil eliminator and described condenser;
Oil return pipe, one end connects described oil eliminator, and the other end is connected to described inlet tube and/or described outlet;
Be positioned at the flow control mechanism on described oil return pipe.
Preferably, described refrigeration system, also comprises:
Be arranged at the oil eliminator on the pipeline between described compressor bank and described condenser;
Be arranged at the 3rd check valve on the pipeline between described oil eliminator and described condenser;
Oil return pipe, one end connects described oil eliminator, and the other end is connected on the pipeline between described first magnetic valve and described compressor bank;
Be positioned at the flow control mechanism on described oil return pipe.
Preferably, for any one above-mentioned refrigeration system, described condenser is evaporative condenser.
Preferably, described evaporation element also comprises:
By the second magnetic valve that the 3rd bypass and described throttle mechanism are arranged in parallel.
Preferably, for any one above-mentioned refrigeration system, also comprise:
The 4th check valve be arranged in parallel by the second bypass and described liquid pump.
Preferably, for any one above-mentioned refrigeration system, also comprise:
Fluid reservoir on pipeline between described condenser and liquid pump.
In technical solution of the present invention, more traditional fresh air refrigerating, gas heat exchange is freezed, ethylene glycol naturally cools and waits natural coldness resource utilizing technology, this technical scheme adopts liquid pump and compressor bank to share a set of evaporator bank and condenser, cold-producing medium latent heat can be made full use of and carry out high efficient heat exchanging, and by opening or close compressor, the conversion of compressor cooling pattern and liquid pump natural cooling source pattern two kinds of patterns can be adopted, when adopting liquid pump natural cooling source pattern, cold-producing medium is as heat transfer media, heat exchange is carried out in condenser and outdoor, the agent of outdoor cold source cooling refrigeration can be utilized, realize maximum natural coldness resource utilizing, save energy consumption, improve energy utilization rate, in addition, compressor bank adopts at least one compressor, evaporator bank adopts at least one evaporimeter, the capacity of refrigeration system increases, and when in machine room, thermic load changes, operation number or its output percentage of compressor and evaporimeter can be changed, greatly widened the complete machine capacity regulating scope of refrigeration system, improve the reliability of each equipment in refrigeration system.
Accompanying drawing explanation
Fig. 1 is the refrigeration system first example structure schematic diagram of machine room of the present invention;
Fig. 2 is refrigeration system the 3rd example structure schematic diagram of machine room of the present invention;
Fig. 3 is refrigeration system the 4th example structure schematic diagram of machine room of the present invention;
Fig. 4 is refrigeration system the 5th example structure schematic diagram of machine room of the present invention;
Fig. 5 is a kind of structural representation of refrigeration system the 6th embodiment of machine room of the present invention;
Fig. 6 is the another kind of structural representation of refrigeration system the 6th embodiment of machine room of the present invention;
Fig. 7 is refrigeration system the 7th example structure schematic diagram of machine room of the present invention;
Fig. 8 is refrigeration system the 8th example structure schematic diagram of machine room of the present invention;
Fig. 9 is refrigeration system the 9th example structure schematic diagram of machine room of the present invention;
Figure 10 is refrigeration system the tenth example structure schematic diagram of machine room of the present invention;
Figure 11 is refrigeration system the 11 example structure schematic diagram of machine room of the present invention;
Figure 12 is refrigeration system the 12 example structure schematic diagram of machine room of the present invention;
Figure 13 is refrigeration system the 13 example structure schematic diagram of machine room of the present invention;
Figure 14 is the refrigeration system preferred embodiment structural representation of machine room of the present invention.
Reference numeral:
1-compressor bank 2-condenser 3-liquid pump 4-evaporator bank 5-second check valve
6-first magnetic valve 7-gas-liquid separator 8-oil eliminator 9-the 3rd check valve
10-flow control mechanism 11-compressor 12-first check valve 22-fluid reservoir
31-the 4th check valve 41-evaporimeter 42-throttle mechanism 43-second magnetic valve
Detailed description of the invention
In order to improve the complete machine capacity regulating scope of refrigeration system, reducing the energy consumption for cooling of machine room, improving energy utilization rate, the invention provides a kind of refrigeration system of machine room.In this technical scheme, liquid pump and compressor bank is adopted to share a set of evaporator bank and condenser, cold-producing medium latent heat can be made full use of and carry out high efficient heat exchanging, and by opening or close compressor, the conversion of compressor cooling pattern and liquid pump natural cooling source pattern two kinds of patterns can be realized, when adopting liquid pump natural cooling source pattern, cold-producing medium is as heat transfer media, heat exchange is carried out in condenser and outdoor, can utilize the agent of outdoor cold source cooling refrigeration, the power of liquid pump is lower, relative to existing air conditioner compressed mechanism cold, reduce energy consumption, improve energy utilization rate; In addition, compressor bank adopts at least one compressor, evaporator bank adopts at least one evaporimeter, the capacity of refrigeration system increases, and when in machine room, thermic load changes, operation number or its output percentage of compressor and evaporimeter can be changed, greatly widened the complete machine capacity regulating scope of refrigeration system, improve the reliability of each equipment in refrigeration system.For making the object, technical solutions and advantages of the present invention clearly, the present invention is further detailed explanation below to lift specific embodiment.
As shown in Figure 1, the refrigeration system first example structure schematic diagram of machine room of the present invention, comprising:
Connected successively by pipeline and form the compressor bank 1 of closed cycle, condenser 2, liquid pump 3 and evaporator bank 4, wherein:
Compressor bank 1 comprises at least one compression unit, each described compression unit comprises compressor 11, and the first check valve 12 on pipeline between described compressor 11 and described condenser 2, when the quantity of compression unit is at least two, at least two compression units are arranged in parallel;
The second check valve 5 be connected in parallel by the first bypass and compressor bank 1;
Evaporator bank 4 comprises at least one evaporation element, and each evaporation element comprises evaporimeter 41, and the throttle mechanism 42 on pipeline between evaporimeter 41 and liquid pump 3, and when the quantity of evaporation element is at least two, at least two evaporation elements are arranged in parallel;
Wherein, be one when the quantity of compression unit is different with the quantity of evaporation element.
In embodiments of the present invention, be one when the quantity of compression unit is different with the quantity of evaporation element, namely illustrate when compression unit quantity is one, the quantity of evaporation element is at least two; When the quantity of evaporation element is one, the quantity of compression unit is at least two.As shown in Figure 1, in order to the structure of reduced graph 1, compression unit and evaporation element only draw two respectively as signal, for Fig. 2 to Figure 14, if when in figure, compression unit and evaporation element are respectively multiple, also only using two as signal, machine room refrigeration system has compressor bank 1 and liquid pump 3 two kinds driving, and both share a set of condenser 2 and evaporator bank 4, the operation of refrigeration system is divided into two kinds of modes, one is compressor cooling pattern, when outdoor temperature is higher, such as when outdoor temperature is higher than 25 DEG C, open compressor bank 1, refrigerant vapour is inhaled into compressor 11, through compression, form high-temperature high-pressure refrigerant steam, this high-temperature high-pressure refrigerant steam forms normal temperature high voltage liquid refrigerant under the condensation of outdoor condenser 2, again through liquid pump 3, liquid pump 3 is now equivalent to a flow-through element, enter the throttle mechanism 42 of evaporator bank 4, evaporimeter 41 is entered after reducing pressure by regulating flow, evaporimeter 41 is disposed in the interior, for carrying out heat exchange with the hot gas in machine room, the low-temperature low-pressure refrigerant steam flowing out evaporimeter is inhaled into again compressor and carries out compression mechanism SAPMAC method next time, another kind is liquid pump natural cooling source pattern, when outdoor temperature is lower, such as when outdoor temperature is lower than 25 DEG C, closes compression unit 1, only cold-producing medium is driven to carry out kind of refrigeration cycle by liquid pump 3, liquid refrigerant is after liquid pump 3 carries out supercharging, the expenditure and pressure of the throttle mechanism 42 in evaporator bank 4 enters evaporimeter 41 and carries out sweat cooling, the gaseous refrigerant that evaporimeter 41 exports arrives outdoor condenser 2 through the second check valve 5, in condenser 2, carry out heat exchange with outdoor cold source be condensed into liquid state, then sucked by liquid pump 3 and participate in liquid pump natural cooling source kind of refrigeration cycle next time.In liquid pump natural cooling source pattern, the power of liquid pump is lower, relative to existing air conditioner compressed mechanism cold, reduces energy consumption, improves energy utilization rate, also has without the need to increasing heat transmission equipment, not destroying the advantages such as machine room wall body structure.Comparatively heat pipe Natural Circulation technology, due to the driving effect of liquid pump, refrigerant circulation power is sufficient, internal circulating load is large, improves heat exchange efficiency.In addition, in the present invention in evaporation element, to be expanded feed flow to evaporimeter 41 by throttle mechanism 42, make use of the energy of highly pressurised liquid, reduce energy loss.In addition, compressor bank 1 adopts at least one compressor 11, and evaporator bank 4 adopts at least one evaporimeter 41, compressor 11 quantity that such as compressor bank 1 adopts is one, two, three, four even more, and evaporimeter 41 quantity that evaporator bank 4 adopts is one, two, three, four even more, owing to adopting multiple compressor in parallel and the multiple evaporimeter of parallel connection, therefore, the host capacity of refrigeration system is large, and decreases the quantity of main frame unit, reduces project installation amount; And when in machine room, thermic load changes, operation number or its output percentage of compressor 11 and evaporimeter 41 can be changed, greatly widen the complete machine capacity regulating scope of refrigeration system, and multiple evaporimeter 41 and multiple compressor 11 share a condenser 2, ensure that compressor has higher efficiency under lower volume output, thus effectively improve the efficiency of refrigeration system within the scope of whole capacity regulating, and also improve the reliability of each equipment in refrigeration system.
Shown in Fig. 1, preferably, condenser 2 is evaporative condenser.
In embodiments of the present invention, second embodiment is the improvement done on the first embodiment basis, the form of condenser 2 can have multiple, preferred condenser 2 is evaporative condenser, and adopt evaporative condenser of the present invention, more existing air-cooled condenser greatly reduces condensation temperature, effectively improves refrigerating efficiency; More existing water-cooled condenser, substantially reduce water consumption, while maintenance high efficient heat exchanging, also possess water saving power saving, compact conformation, easy for installation, application by numerous advantage such as geographical conditions restriction, therefore, on the basis of the first embodiment, adopt evaporative condenser, what substantially prolongs the liquid pump natural cooling source pattern of refrigeration system utilizes the time, improves the annual Energy Efficiency Ratio of complete machine.
As shown in Figure 2, the 3rd embodiment of the refrigeration system of machine room of the present invention, described refrigeration system also comprises:
Be arranged at the first magnetic valve 6 on the pipeline between compressor bank 1 and evaporator bank 4 and in parallel with the second check valve 5.
In embodiments of the present invention, the first embodiment or the second embodiment basis add the first magnetic valve 6, when adopting compressor cooling pattern, the first magnetic valve 6 conducting, refrigerant vapour enters in compressor 11, and does not substantially flow in the second check valve 5; When adopting liquid pump natural cooling source pattern, the first magnetic valve 6 disconnects, and refrigerant vapour is entered in condenser 2 by the second check valve 5.Adopt the first magnetic valve 6 to control refrigerant vapour better and flow into compressor 11 or the second check valve 5.
As shown in Figure 3, refrigeration system the 4th embodiment of machine room of the present invention, compressor bank 1 comprises at least two compression units; Evaporator bank 4 comprises an evaporation element.
This embodiment is the preferred version on first, second or the 3rd embodiment basis, adopt an evaporation element, and compression unit has multiple and is arranged in parallel, parallel connection compressor can be frequency conversion, determine frequently or any combination of digital vortex, and compressor kind is not limit.Parallel connection compressor has widened complete machine range of capacity, when indoor heat load changes, the operation number of adjustable compressor, or regulate the output percentage of compressor, still has the object of higher efficiency when round-the-clock efficient, energy-saving run when running under reaching sub-load.
As shown in Figure 4, refrigeration system the 5th embodiment of machine room of the present invention, compressor bank 1 comprises a compression unit; Evaporator bank 4 comprises at least two evaporation elements.
This embodiment is the preferred version on first, second or the 3rd embodiment basis, adopt a compression unit, and evaporation element has multiple and is arranged in parallel, multiple evaporimeter 41 can be distributed in indoor diverse location, be convenient to optimize Room air distribution design, prevent hot localised points, and can according to the size of indoor heat load, the number that adjustment evaporimeter runs and the output percentage of blower fan, thus realize and the mating of compressor Drazin inverse, reach the energy-conservation of complete machine and energy stable operation.
As shown in Figure 5, the 6th embodiment of the refrigeration system of machine room of the present invention, described refrigeration system, also comprises:
Be arranged at the gas-liquid separator 7 on the pipeline between compressor bank 1 and the first magnetic valve 6.
In embodiments of the present invention, on the 3rd to the 5th embodiment basis, increase a gas-liquid separator 7, gas-liquid separator 7 is arranged on the porch of compressor 11, the gas-liquid separator 7 increased can play the effect of drop in separating evaporator 41 exit gas, make the fluid entering compressor 11 be gas, thus make compressor 11 from liquid hammer damage, substantially increase refrigeration system reliability of operation.In addition, refrigeration system of the present invention on the first or second embodiment basis, the pipeline between evaporator bank 4 and compressor bank 1 can be arranged gas-liquid separator 7, for separating of the drop in evaporimeter 41 exit gas.
In technical solution of the present invention, gas-liquid separator 7 is divided into following two schemes with the annexation of evaporator bank 4 and compressor bank 1, a kind of continue referring to shown in Fig. 5, first magnetic valve 6 is communicated with by inlet tube with gas-liquid separator 7, and gas-liquid separator 7 is communicated with by an outlet with the tube connector being connected the import of each compressor 11; Or another kind please refer to shown in Fig. 6, the first magnetic valve 6 is communicated with by inlet tube with gas-liquid separator 7, and gas-liquid separator 7 is communicated with respectively by outlet with each compressor 11 import of compressor bank 1.
In above-mentioned two schemes, a kind of type of attachment of gas-liquid separator 7 is " one-in-and-one-out ", the type of attachment of another kind of gas-liquid separator 7 is " one enters to have more ", adopts " one enters to have more ", has following advantages: the air-breathing of each compressor 11 is distributed more even; When compressor 11 part exports or single compressor runs, the outlet refrigerant flow rates of gas-liquid separator 7 is higher, easy oil return; If the spill port blocking in gas-liquid separator 7, then cannot compressor corresponding to the outlet that is just blocked of oil return, other compressors run are normal oil return still, because this reducing the oil return risk of refrigeration system operation.
As shown in Figure 7, refrigeration system the 7th example structure schematic diagram of machine room of the present invention, described refrigeration system, also comprises:
Be arranged at the oil eliminator 8 between compressor bank 1 and condenser 2;
Be arranged at the 3rd check valve 9 between oil eliminator 8 and condenser 2;
Oil return pipe, one end connects oil eliminator 8, and the other end is connected to inlet tube;
Be positioned at the flow control mechanism 10 on oil return pipe.
In embodiments of the present invention, as shown in Figure 7, be on the basis of the 6th embodiment, increase an oil eliminator 8, and oil return pipe is connected to the inlet tube of gas-liquid separator 7, and on oil return pipe, a flow control mechanism 10 or throttle mechanism are installed.Adopt the scheme of the present embodiment, in compressor 11 can being vented, the oil of the overwhelming majority is separated, and directly returns in gas-liquid separator 7, by air-breathing, oil is taken back compressor 11.
As shown in Figure 8, refrigeration system the 8th example structure schematic diagram of machine room of the present invention, described refrigeration system, also comprises:
Be arranged at the oil eliminator 8 between compressor bank 1 and condenser 2;
Be arranged at the 3rd check valve 9 between oil eliminator 8 and condenser 2;
Oil return pipe, one end connects oil eliminator 8, and the other end is connected to outlet;
Be positioned at the flow control mechanism 10 on oil return pipe.
In embodiments of the present invention, as shown in Figure 8, be on the basis of the 6th embodiment, increase an oil eliminator 8, and oil eliminator 8 oil return pipe is connected to respectively the outlet that gas-liquid separator 7 exports, Figure 8 shows that the situation that gas-liquid separator 7 one enters to have more, namely outlet has multiple, then oil return pipe is connected to each root outlet of gas-liquid separator 7, when gas-liquid separator 7 is one-in-and-one-out, namely outlet only has one, then oil return pipe is connected to this outlet.Adopt the scheme of the present embodiment, in gas-liquid separator 7 during spill port blocking, greatly can reduce compressor oil return impact; The recirculating oil quantity returning each compressor is controlled by the flow control mechanism on oil return pipe; Reduce the requirement of oil return to gas flow rate in compressor return air pipe.
As shown in Figure 9, refrigeration system the 9th example structure schematic diagram of machine room of the present invention, described refrigeration system, also comprises:
Be arranged at the oil eliminator 8 between compressor bank 1 and condenser 2;
Be arranged at the 3rd check valve 9 between oil eliminator 8 and condenser 2;
Oil return pipe, one end connects oil eliminator 8, and the other end is connected to inlet tube and outlet respectively;
Be positioned at the flow control mechanism 10 on oil return pipe.
In embodiments of the present invention, as shown in Figure 9, be on the basis of the 6th embodiment, increase an oil eliminator 8, oil return pipe is connected inlet tube and outlet respectively, Figure 9 shows that the situation that gas-liquid separator 7 one enters to have more, namely outlet has multiple, then oil return pipe is connected to each root outlet of gas-liquid separator 7 respectively and receives on inlet tube, when gas-liquid separator 7 is one-in-and-one-out, namely outlet only has one, then oil return pipe is connected to this outlet and is connected on inlet tube.Adopt the technical scheme of the present embodiment, can prevent a large amount of oil from directly turning back to compressor air suction mouth, cause compressor hydraulic compression; Oil return pipe is connected with outlet, can play the effect making up gas-liquid separator 7 outlet and divide oil uneven; Compressor 11 is when sub-load or frequency conversion export, and compressor return air tube refrigerant flow velocity is lower, and oil return pipe is connected with outlet and can plays good oil return effect.
As shown in Figure 10, refrigeration system the tenth embodiment of machine room of the present invention, described refrigeration system, also comprises:
Be arranged at the oil eliminator 8 on the pipeline between compressor bank 1 and condenser 2;
Be arranged at the 3rd check valve 9 on the pipeline between oil eliminator 8 and condenser 2;
Oil return pipe, one end connects oil eliminator 8, and the other end is connected on the pipeline between the first magnetic valve 6 and compressor bank 1;
Be positioned at the flow control mechanism 10 on oil return pipe.
In technical solution of the present invention, as shown in Figure 10, on the 3rd to the 5th embodiment basis, add an oil eliminator 8, and oil return pipe one end is connected oil eliminator 8, the other end is connected on the pipeline between the first magnetic valve 6 and compressor bank 1, carries out Oil-gas Separation in oil return separator 8, improves the reliability of refrigeration system.In addition, refrigeration system of the present invention on the first or second embodiment basis, the pipeline between compressor bank 1 and condenser 2 can be arranged oil eliminator 8, for the Oil-gas Separation of compressor outlet.
In embodiments of the present invention, the form of throttle mechanism 42 can have multiple, is specifically as follows electric expansion valve, heating power expansion valve, ball valve, capillary or orifice plate.
As shown in figure 11, refrigeration system the 11 embodiment of machine room of the present invention, be included in any one refrigeration system in above-mentioned first embodiment of the present invention to the tenth embodiment, described evaporation element also comprises:
The second magnetic valve 43 be arranged in parallel by the 3rd bypass and throttle mechanism 42.
In embodiments of the present invention, throttle mechanism 42 second magnetic valve 43 in parallel, when throttle mechanism 42 has multiple, each throttle mechanism 42 is the second magnetic valve 43 in parallel respectively, under compressor cooling pattern, second magnetic valve 43 cuts out, and liquid refrigerant, all after throttle mechanism 42 throttling, enters evaporimeter 41 sweat cooling; Under liquid pump natural cooling source pattern, open one or more with throttle mechanism 42 of the second magnetic valve 43, with the pressure drop of regulator solution pipeline section, realize the matched well of pump lift and flow.
As shown in figure 12, refrigeration system the 12 embodiment of machine room of the present invention, is included in any one refrigeration system in the present invention's above-mentioned first embodiment to the 11 embodiment, also comprises:
The 4th check valve 31 be arranged in parallel by the second bypass and described liquid pump 3.
In embodiments of the present invention, liquid pump 3 4th check valve 31 in parallel, such system is under compressor cooling pattern, and liquid pump 3 quits work, and flows to evaporator bank 4, thus reduce Overall Power Consumption from condenser 2 liquid refrigerant out through the 4th check valve 31; Refrigeration system, utilizing under natural cooling source pattern, is still driven by liquid pump 3.
As shown in figure 13, refrigeration system the 13 embodiment of machine room of the present invention, is included in any one refrigeration system in the present invention's above-mentioned first embodiment to the 12 embodiment, also comprises:
Fluid reservoir 22 on pipeline between described condenser 2 and liquid pump 3.
In embodiments of the present invention, add a fluid reservoir 22 between condenser 2 and liquid pump 3, the cold-producing medium on a small quantity not becoming liquid completely through condenser 2 heat exchange can carry out gas-liquid separation in fluid reservoir 22, liquid refrigerant is because weight distribution is below fluid reservoir 22, make to ensure certain liquid refrigerant all the time in fluid reservoir 22, difference in height between the import of fluid reservoir 22 and liquid pump 3 is that system provides certain pressure reduction, reduce liquid pump 3 to cavitate possibility, different operating mode operation simultaneously can cause the best refrigerant charge of system different, liquid storage can be utilized to fill with 22 and to ensure that the refrigerant amount in condenser 2 and evaporimeter 41 remains best.
In all embodiments stated on the invention, the first magnetic valve 6 and the second check valve 5 can adopt a triple valve to substitute, and are conducive to the structure simplifying refrigeration system like this, reduce input cost.
As shown in figure 14, a preferred embodiment of the refrigeration system of machine room of the present invention, further illustrates the running of the refrigeration system of machine room of the present invention by this embodiment.Under compressor cooling pattern, close liquid pump 3 and open the first magnetic valve 6, open multiple compressor 11, refrigerant vapour in gas-liquid separator 7 is sucked in multiple compressor 11 by multiple outlet respectively, each compressor air suction can be allowed like this to distribute more even, the steam pressure exported due to compressor 11 is higher than the inlet pressure of oil eliminator 8, therefore, refrigerant vapour can enter oil eliminator 8 by the first check valve 12, Oil-gas Separation is carried out in oil eliminator 8, refrigerant vapour enters condenser 2 by the 3rd check valve 9, and the oil separated enters the entrance of gas-liquid separator 7 by flow control mechanism 10, refrigerant vapour enters fluid reservoir 22 after condenser 2 carries out condensation, to maintain the certain liquid level of fluid reservoir 22, cold-producing medium enters evaporimeter 41 by the 4th check valve 31 and throttle mechanism 42 again, in evaporimeter 41, carry out heat exchange with the focus in machine room emerge refrigerant vapour, compressor 11 is entered again by the first magnetic valve 6, complete a kind of refrigeration cycle, under liquid pump natural cooling source pattern, close the first magnetic valve 6, close compressor 11, refrigerant vapour enters condenser 2 by the second check valve 5 and carries out condensation formation refrigerant liquid, enter fluid reservoir 22 again, under the suction effect of liquid pump 3, enter liquid pump 3 from fluid reservoir 22 out refrigerant liquid, then enter evaporator bank 4, in evaporimeter 41, form refrigerant vapour with heat exchange with outside enter condenser 2 by the second check valve 5 again, complete a kind of refrigeration cycle.The present embodiment is provided with various valve and system attachment on the basis of the various embodiments described above, to guarantee high security and the high reliability of system cloud gray model.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (11)
1. a refrigeration system for machine room, is characterized in that, comprising:
Connected successively by pipeline and form the compressor bank (1) of closed cycle, condenser (2), liquid pump (3) and evaporator bank (4), wherein:
Described compressor bank (1) comprises at least one compression unit, each described compression unit comprises compressor (11), and the first check valve (12) on the pipeline being positioned between described compressor (11) and described condenser (2), when the quantity of described compression unit is at least two, at least two compression units are arranged in parallel;
By the second check valve (5) that the first bypass and described compressor bank (1) are connected in parallel;
Described evaporator bank (4) comprises at least one evaporation element, each described evaporation element comprises evaporimeter (41), and the throttle mechanism (42) on the pipeline being positioned between described evaporimeter (41) and liquid pump (3), when the quantity of described evaporation element is at least two, at least two evaporation elements are arranged in parallel;
Wherein, be one when the quantity of compression unit is different with the quantity of evaporation element.
2. refrigeration system as claimed in claim 1, is characterized in that, also comprise:
Be arranged at the first magnetic valve (6) on the pipeline between described compressor bank (1) and evaporator bank (4) and in parallel with described second check valve (5).
3. refrigeration system as claimed in claim 2, it is characterized in that, described compressor bank (1) comprises at least two compression units, and described evaporator bank (4) comprises an evaporation element; Or described compressor bank (1) comprises a compression unit, described evaporator bank (4) comprises at least two evaporation elements.
4. refrigeration system as claimed in claim 2, is characterized in that, also comprise:
Be arranged at the gas-liquid separator (7) on the pipeline between described compressor bank (1) and described first magnetic valve (6).
5. refrigeration system as claimed in claim 4, it is characterized in that, described first magnetic valve (6) is communicated with by inlet tube with described gas-liquid separator (7), and described gas-liquid separator (7) is communicated with by an outlet with the tube connector being connected the import of each described compressor (11); Or described first magnetic valve (6) is communicated with by inlet tube with described gas-liquid separator (7), described gas-liquid separator (7) is communicated with respectively by outlet with each described compressor (11).
6. refrigeration system as claimed in claim 5, is characterized in that, also comprise:
Be arranged at the oil eliminator (8) on the pipeline between described compressor bank (1) and described condenser (2);
Be arranged at the 3rd check valve (9) on the pipeline between described oil eliminator (8) and described condenser (2);
Oil return pipe, one end connects described oil eliminator (8), and the other end is connected to described inlet tube and/or described outlet;
Be positioned at the flow control mechanism (10) on described oil return pipe.
7. refrigeration system as claimed in claim 2, is characterized in that, also comprise:
Be arranged at the oil eliminator (8) on the pipeline between described compressor bank (1) and described condenser (2);
Be arranged at the 3rd check valve (9) on the pipeline between described oil eliminator (8) and described condenser (2);
Oil return pipe, one end connects described oil eliminator (8), and the other end is connected on the pipeline between described first magnetic valve (6) and described compressor bank (1);
Be positioned at the flow control mechanism (10) on described oil return pipe.
8. the refrigeration system according to any one of claim 1 ~ 7, is characterized in that, described condenser (2) is evaporative condenser.
9. the refrigeration system according to any one of claim 1 ~ 7, is characterized in that, described evaporation element also comprises:
By the second magnetic valve (43) that the 3rd bypass and described throttle mechanism (42) are arranged in parallel.
10. the refrigeration system according to any one of claim 1 ~ 7, is characterized in that, also comprises:
The 4th check valve (31) be arranged in parallel by the second bypass and described liquid pump (3).
11. refrigeration systems according to any one of claim 1 ~ 7, is characterized in that, also comprise: be positioned at the fluid reservoir (22) on the pipeline between described condenser (2) and liquid pump (3).
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| CN106801920A (en) * | 2017-02-17 | 2017-06-06 | 海信科龙电器股份有限公司 | A kind of recuperated cycle system and its control method, air-conditioning |
| CN108489131A (en) * | 2018-03-28 | 2018-09-04 | 深圳市艾特网能技术有限公司 | The naturally cold multi-type refrigeration system of passive type heat pipe and its control method |
| CN110094818A (en) * | 2019-06-10 | 2019-08-06 | 克莱门特捷联制冷设备(上海)有限公司 | A kind of data center's compound air-conditioning system and its control method |
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Address after: Nanshan District Xueyuan Road in Shenzhen city of Guangdong province 518055 No. 1001 Nanshan Chi Park building B2 Applicant after: Vitamin Technology Co., Ltd. Applicant after: Vitamin Technology (Jiangmen) Co., Ltd. Address before: Nanshan District Xueyuan Road in Shenzhen city of Guangdong province 518055 No. 1001 Nanshan Chi Park building B2 Applicant before: Aimosheng Network Energy Source Co., Ltd. Applicant before: Emerson Network Power (Jiangmen) Co., Ltd. |
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Effective date of registration: 20180928 Address after: 518055 B2, Nanshan Zhiyuan, 1001 Nanshan District Xue Yuan Avenue, Shenzhen, Guangdong. Co-patentee after: Victoria Technology Co., Ltd. Jiangmen branch Patentee after: Vitamin Technology Co., Ltd. Address before: 518055 B2, Nanshan Zhiyuan, 1001 Nanshan District Xue Yuan Avenue, Shenzhen, Guangdong. Co-patentee before: Vitamin Technology (Jiangmen) Co., Ltd. Patentee before: Vitamin Technology Co., Ltd. |