CN205641652U - Cooling systems - Google Patents
Cooling systems Download PDFInfo
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- CN205641652U CN205641652U CN201620279890.9U CN201620279890U CN205641652U CN 205641652 U CN205641652 U CN 205641652U CN 201620279890 U CN201620279890 U CN 201620279890U CN 205641652 U CN205641652 U CN 205641652U
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Abstract
The utility model discloses a cooling systems, including tertiary sub - cooling cycle system, wherein, the sub - cooling cycle system of the first order is including the the first compressor who puts through in proper order, first heat exchanger, a throttling arrangement, and second heat exchanger, the sub - cooling cycle system in the second level is including the second compressor of putting through in proper order, the second heat exchanger, second throttle device, with the third heat exchanger, the sub - cooling cycle system of the third level is including the third compressor of putting through in proper order, the third heat exchanger, the 3rd throttling arrangement, with the fourth heat exchanger, wherein, the switch -on has first pair of heat exchanger between a throttling arrangement and the second heat exchanger, and/or the switch -on has the vice heat exchanger of second between second throttle device and the third heat exchanger, and/or the switch -on has the vice heat exchanger of third between the 3rd throttling arrangement and the fourth heat exchanger. According to the utility model discloses a cooling systems can obtain a plurality of different evaporating temperature's refrigeration effect, improves cooling systems's application range, reliability and stability.
Description
Technical field
This utility model relates to refrigeration technology field, especially relates to a kind of refrigeration system.
Background technology
Three grades of steam compression type cascade refrigeration blood circulation in correlation technique, substantially by total kind of refrigeration cycle temperature difference segmentation
Becoming 3 regions, the cold-producing medium that each region character is suitable is circulated, it may be assumed that undertake high temperature section with high boiling point cold-producing medium
Kind of refrigeration cycle, undertakes the kind of refrigeration cycle of middle-temperature section with mid-boiling point cold-producing medium, and the refrigeration undertaking low-temperature zone with low boiling point refrigerant is followed
Ring, final obtains a relatively low cryogenic temperature, and its advantage is stable and reliable operation, it is thus achieved that temperature relatively low (minimum can
Reach-110 DEG C), but its shortcoming is to obtain a cryogenic temperature, thus significantly limit its range.
Utility model content
This utility model is intended at least to solve one of technical problem present in prior art.To this end, this utility model is to carry
Go out a kind of refrigeration system, the good refrigeration effect of described refrigeration system.
This utility model also proposes a kind of refrigeration system.
According to the refrigeration system of this utility model first aspect, including: the sub-cooling cycle system of the first order, including in turn switching on
The first compressor, First Heat Exchanger, first throttle device and the second heat exchanger；The sub-cooling cycle system in the second level,
Including the second compressor in turn switched on, described second heat exchanger, the second throttling arrangement and the 3rd heat exchanger；Third level
Cooling cycle system, changes including the 3rd compressor in turn switched on, described 3rd heat exchanger, the 3rd throttling arrangement and the 4th
Hot device；Wherein, connect between described first throttle device and described second heat exchanger and have the first auxiliary heat exchanger and/or described the
Connect between two throttling arrangements and described 3rd heat exchanger and have the second auxiliary heat exchanger and/or described 3rd throttling arrangement and described the
Connect between four heat exchangers and have the 3rd auxiliary heat exchanger.
According to refrigeration system of the present utility model, it is possible to obtain the refrigeration of multiple different evaporating temperatures, improve refrigeration system
Range, reliability and stability.
In certain embodiments, between described first throttle device and described second heat exchanger connect have parallel connection the first branch road and
Second branch road, described first auxiliary heat exchanger turns on described second branch road.
In certain embodiments, on described second branch road, also connection has the first stop valve.
In certain embodiments, between described second throttling arrangement and described 3rd heat exchanger connect have parallel connection the 3rd branch road and
4th branch road, described second auxiliary heat exchanger turns on described 4th branch road.
In certain embodiments, described 4th branch road has further turned on the second stop valve.
In certain embodiments, in described first throttle device, described second throttling arrangement, described 3rd throttling arrangement extremely
Few one is electric expansion valve.
In certain embodiments, in the sub-cooling cycle system of the described first order boiling point of the first cold-producing medium of circulation higher than described the
The boiling point of the second refrigerants of circulation in two grades of sub-cooling cycle systems, and/or the boiling point of described second refrigerant is higher than described the
The boiling point of the 3rd cold-producing medium of circulation in three grades of sub-cooling cycle systems.
According to the refrigeration system of this utility model second aspect, including: multistage sub-cooling cycle system, every grade of described sub-refrigeration
Blood circulation all includes that compressor, condenser, throttling arrangement and the vaporizer in turn switched on, every grade of described sub-refrigeration follow
Described condenser in loop systems is the vaporizer in the described sub-cooling cycle system of its previous stage, wherein, at least one-level
Connect between described throttling arrangement and described vaporizer in described sub-cooling cycle system and have auxiliary heat exchanger.
According to refrigeration system of the present utility model, it is possible to obtain the refrigeration of multiple different evaporating temperatures, improve refrigeration system
Range, reliability and stability.
In certain embodiments, connection has between the described throttling arrangement of described auxiliary heat exchanger and described vaporizer to connect has at least
Two branch roads in parallel, at least one described branch road is provided with described auxiliary heat exchanger.
In certain embodiments, connect and have on the described branch road of described auxiliary heat exchanger and further turned on valve.
Additional aspect of the present utility model and advantage will part be given in the following description, and part will become from the following description
Obtain substantially, or recognized by practice of the present utility model.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the refrigeration system according to this utility model embodiment.
Reference:
Refrigeration system 1000；
The sub-cooling cycle system of the first order 100；Second heat exchanger 10；First compressor 11；First Heat Exchanger 12；First segment
Stream device 13；First branch road 14；Second branch road 15；First auxiliary heat exchanger 16；First stop valve 17；
The sub-cooling cycle system in the second level 200；3rd heat exchanger 20；Second compressor 21；Second throttling arrangement 22；3rd
Branch road 23；4th branch road 24；Second auxiliary heat exchanger 25；Second stop valve 26；
The sub-cooling cycle system of the third level 300；3rd compressor 31；3rd throttling arrangement 32；4th heat exchanger 33.
Detailed description of the invention
Of the present utility model embodiment is described below in detail, and the example of described embodiment is shown in the drawings, the most from start to finish
Same or similar label represents same or similar element or has the element of same or like function.Below with reference to attached
The embodiment that figure describes is exemplary, it is intended to be used for explaining this utility model, and it is not intended that to limit of the present utility model
System.
Following disclosure provides many different embodiments or example for realizing different structure of the present utility model.For letter
Changing disclosure of the present utility model, hereinafter parts and setting to specific examples are described.Certainly, they are the most merely illustrative,
And it is not intended to limit this utility model.Additionally, this utility model can in different examples repeat reference numerals and/or
Letter.This repetition is for purposes of simplicity and clarity, between itself not indicating discussed various embodiment and/or arranging
Relation.Additionally, the various specific technique that provides of this utility model and the example of material, but ordinary skill
Personnel are it can be appreciated that the property of can be applicable to of other techniques and/or the use of other materials.
Below with reference to Fig. 1, the refrigeration system 1000 according to this utility model first aspect embodiment is described.
As it is shown in figure 1, according to the refrigeration system 1000 of this utility model first aspect embodiment, including: first order freezes
Blood circulation 100, the sub-cooling cycle system in the second level 200 and the sub-cooling cycle system of the third level 300.Preferably, above-mentioned
In three tier structure SAPMAC method system, the cold-producing medium boiling point of circulation all differs, such as, and stream in the sub-cooling cycle system of the first order 100
The boiling point of the second refrigerant that the boiling point of the first logical cold-producing medium circulates in can being higher than the sub-cooling cycle system in the second level 200,
The boiling point of second refrigerant can be higher than the boiling point of the 3rd cold-producing medium of circulation in the sub-cooling cycle system of the third level 300, the most just
To say, the first cold-producing medium can be the cold-producing medium of higher, second refrigerant can be the cold-producing medium of mid-boiling point, the 3rd system
Cryogen can be the cold-producing medium of relatively low boiling point.Certainly, this utility model is not limited to this, the first cold-producing medium, second refrigerant,
The boiling point height relation of the 3rd cold-producing medium can also be specifically chosen according to actual requirement, preferably to meet actual requirement.
As it is shown in figure 1, the sub-cooling cycle system of the first order 100 includes the first compressor 11, the First Heat Exchanger in turn switched on
12 (being such as used as condenser), first throttle device 13 (such as electric expansion valve) and the second heat exchanger 10 (such as steam
Send out device to use).It is to say, the outlet of the first compressor 11 is connected with the import of First Heat Exchanger 12, First Heat Exchanger 12
Outlet connect first throttle device 13 import, first throttle device 13 outlet connect the second heat exchanger 10 import,
The outlet of the second heat exchanger 10 connects the import of the first compressor 11, so far, when the first cold-producing medium follows in first order refrigeration
During loop systems 100 internal circulation flow, the kind of refrigeration cycle of the first temperature section can be completed, such as, when height selected by the first cold-producing medium
During boiling point refrigerant, the sub-cooling cycle system of the first order 100 can complete the kind of refrigeration cycle of high temperature section.Here, explanation is needed
It is that connection specifically described herein refers to: connect, turn on, enable coolant to circulate between.
As it is shown in figure 1, the sub-cooling cycle system in the second level 200 includes second compressor the 21, second heat exchanger in turn switched on
10 (being such as used as condenser), the second throttling arrangement 22 (such as electric expansion valve) and the 3rd heat exchanger 20 (such as steam
Send out device to use).It is to say, the outlet of the second compressor 21 is connected with the import of the second heat exchanger 10, the second heat exchanger 10
Outlet connect the second throttling arrangement 22 import, the outlet of the second throttling arrangement 22 connects the import of the 3rd heat exchanger 20, the
Three heat exchangers 20 outlet connect the second compressor 21 import, so far, when second refrigerant in the second level sub-kind of refrigeration cycle
During system 200 internal circulation flow, the kind of refrigeration cycle of the second temperature section can be completed, such as, boil in second refrigerant is selected
During point cold-producing medium, the sub-cooling cycle system in the second level 200 can complete the kind of refrigeration cycle of middle-temperature section.
As it is shown in figure 1, the sub-cooling cycle system of the third level 300 includes the 3rd compressor the 31, the 3rd heat exchanger in turn switched on
20 (being such as used as condenser), the 3rd throttling arrangement 32 (such as electric expansion valve) and the 4th heat exchanger 33 (such as steam
Send out device to use).It is to say, the outlet of the 3rd compressor 31 is connected with the import of the 3rd heat exchanger 20, the 3rd heat exchanger 20
Outlet connect the 3rd throttling arrangement 32 import, the 3rd throttling arrangement 32 outlet connect the 4th heat exchanger 33 import,
The outlet of the 4th heat exchanger 33 connects the import of the 3rd compressor 31, so far, when the 3rd cold-producing medium follows in third level refrigeration
During loop systems 300 internal circulation flow, the kind of refrigeration cycle of the 3rd temperature section can be completed, such as, when the 3rd cold-producing medium is selected low
During boiling point refrigerant, the sub-cooling cycle system of the third level 300 can complete the kind of refrigeration cycle of low-temperature zone.
So, when the vaporizer of adjacent level and condenser are a heat exchanger (vaporizer of such as high temperature section and middle-temperature section
When condenser is same second heat exchanger 10, the condenser of the vaporizer of such as middle-temperature section and low-temperature zone be the same 3rd to change
During hot device 20), the cold-producing medium of higher can be used to evaporate the cold of acquisition in this heat exchanger, compensate relatively low boiling
Cold-producing medium in this heat exchanger, condense required cold (such as can use the cold-producing medium of high temperature section in the second heat exchanger 10
The cold that evaporation obtains, compensates the cold-producing medium of middle-temperature section and condenses required cold in the second heat exchanger 10, such as can adopt
In the 3rd heat exchanger 20, evaporate the cold of acquisition with the cold-producing medium of middle-temperature section, compensate the cold-producing medium of low-temperature zone in the 3rd heat exchange
Device 20 condenses required cold) such that it is able to it is effectively improved the overall performance of refrigeration system 1000.
Specifically, between first throttle device 13 and the second heat exchanger 10, connection has the first auxiliary heat exchanger 16 (such as to evaporate
Device with) and/or the second throttling arrangement 22 and the 3rd heat exchanger 20 between connect have the second auxiliary heat exchanger 25 (such as to evaporate
Device with) and/or the 3rd throttling arrangement 32 and the 4th heat exchanger 33 between connect have the 3rd auxiliary heat exchanger (such as to make vaporizer
With).It is to say, between first throttle device 13 and the second heat exchanger 10, the second throttling arrangement 22 and the 3rd heat exchanger
Connect between at least one between 20 and between the 3rd throttling arrangement 32 and the 4th heat exchanger 33 and have auxiliary heat exchanger (example
As being used as vaporizer).Thus, it is possible to obtain the kind of refrigeration cycle effect of three different evaporating temperatures.
Refrigeration system 1000 according to this utility model embodiment, by arranging first auxiliary heat exchanger the 16, second auxiliary heat exchanger 25
And at least one that the 3rd in auxiliary heat exchanger, so that refrigeration system 1000 can obtain the system of multiple different evaporating temperature
Cold effect, and then the range of refrigeration system 1000, reliability and stability can be drastically increased.
In an embodiment of the present utility model, with reference to Fig. 1, connect between first throttle device 13 and the second heat exchanger 10
Having the first branch road 14 and the second branch road 15 of parallel connection, the first auxiliary heat exchanger 16 turns on the second branch road 15.It is to say,
The outlet of first throttle device 13 divides two-way, and a road connects the import of the first auxiliary heat exchanger 16, going out of the first auxiliary heat exchanger 16
The outlet on mouth and another road connects the import of the second heat exchanger 10 after merging.Thus, it is possible to preferably obtain different evaporating temperature
Refrigeration and the good stability of refrigeration system 1000.
It is further preferred that with reference to Fig. 1, the second branch road 15 has further turned on the first stop valve 17, such as, first section
Stop valve 17 and can be connected to (the i.e. first stop valve between the outlet of first throttle device 13 and the import of the first auxiliary heat exchanger 16
The outlet of the import of 17 and first throttle device 13 is connected, the outlet of the first stop valve 17 and entering of the first auxiliary heat exchanger 16
Mouth is connected)；The most such as, the first stop valve 17 can also be connected to outlet and second heat exchanger 10 of the first auxiliary heat exchanger 16
Import between (outlet of the import of the i.e. first stop valve 17 and the first auxiliary heat exchanger 16 is connected, going out of the first stop valve 17
Mouthful with the import of the second heat exchanger 10 connection).Thus, by regulating the aperture of the first stop valve 17, first can be regulated secondary
The refrigerating capacity of heat exchanger 16, thus regulate the refrigeration of the sub-cooling cycle system of the first order 100 so that first order freezes
The refrigeration stability of blood circulation 100 is more preferable.
In an embodiment of the present utility model, with reference to Fig. 1, connect between the second throttling arrangement 22 and the 3rd heat exchanger 20
Having the 4th branch road 24 and the 4th branch road 24 of parallel connection, the second auxiliary heat exchanger 25 turns on the 4th branch road 24.That is,
The outlet of the second throttling arrangement 22 divides two-way, and a road connects the import of the second auxiliary heat exchanger 25, going out of the second auxiliary heat exchanger 25
The outlet on mouth and another road connects the import of the 3rd heat exchanger 20 after merging.Thus, it is possible to preferably obtain different evaporating temperature
Refrigeration and the good stability of refrigeration system 1000.
It is further preferred that with reference to Fig. 1, the second branch road 15 has further turned on the second stop valve 26, such as, second section
Stop valve 26 and can be connected to (the i.e. second stop valve between the outlet of the second throttling arrangement 22 and the import of the second auxiliary heat exchanger 25
The outlet of the import of 26 and the second throttling arrangement 22 is connected, the outlet of the second stop valve 26 and entering of the second auxiliary heat exchanger 25
Mouth is connected)；The most such as, the second stop valve 26 can also be connected to outlet and the 3rd heat exchanger 20 of the second auxiliary heat exchanger 25
Import between (outlet of the import of the i.e. second stop valve 26 and the second auxiliary heat exchanger 25 is connected, going out of the second stop valve 26
Mouthful with the import of the 3rd heat exchanger 20 connection).Thus, by regulating the aperture of the second stop valve 26, second can be regulated secondary
The refrigerating capacity of heat exchanger 25, thus regulate the refrigeration of the sub-cooling cycle system in the second level 200 so that second level freezes
The refrigeration stability of blood circulation 200 is more preferable.
Below, with reference to Fig. 1, briefly describing the refrigeration system 1000 according to one concrete example of this utility model, this refrigeration is
System 1000 can obtain the kind of refrigeration cycle effect of three different evaporating temperatures.
As it is shown in figure 1, refrigeration system 1000 includes: the sub-cooling cycle system of the first order 100, the second level sub-kind of refrigeration cycle system
System 200 and the sub-cooling cycle system of the third level 300, wherein, the sub-cooling cycle system of the first order 100 includes in turn switching on
The first compressor 11, First Heat Exchanger 12, first throttle device 13 and the second heat exchanger 10, the second level refrigeration follow
Loop systems 200 includes the second compressor the 21, second heat exchanger the 10, second throttling arrangement 22 and the 3rd heat exchange in turn switched on
Device 20, the sub-cooling cycle system of the third level 300 includes the 3rd compressor the 31, the 3rd heat exchanger the 20, the 3rd in turn switched on
Throttling arrangement 32 and the 4th heat exchanger 33.Wherein, between first throttle device 13 and the second heat exchanger 10, connection has parallel connection
The first branch road 14 and the second branch road 15, on the second branch road 15, the circulating direction along cold-producing medium has sequentially connected the first cut-off
Valve 17 and the first auxiliary heat exchanger 16, connect between the second throttling arrangement 22 and the 3rd heat exchanger 20 and have the 3rd branch road of parallel connection
23 and the 4th branch road 24, on the 4th branch road 24, the circulating direction along cold-producing medium has sequentially connected the second stop valve 26 and second
Auxiliary heat exchanger 25.
During the work of the first order sub-cooling cycle system 100, the first cold-producing medium is (in such as Fig. 1 shown in 1A point
R600a refrigerant vapor) after the compression of the first compressor 11, it is thus achieved that the refrigerant vapour of High Temperature High Pressure is (such as 2A in Fig. 1
At Dian), hybrid refrigeration steam enters in First Heat Exchanger 12 and condenses, and condensed refrigerant liquid is (such as 3A in Fig. 1
At Dian) enter first throttle device 13 throttling expansion, the gas-liquid two-phase mix refrigerant after throttling is (such as 4A point in Fig. 1
Place) point two-way, a road (at 6A point in Fig. 1) is through the regulation (in such as Fig. 1 at 7A point) of the first stop valve 17
Flow into the first auxiliary heat exchanger 16, from the first auxiliary heat exchanger 16 refrigerant gas (at 8A point in Fig. 1) and first out
Throttling arrangement 13 exports gas-liquid two-phase cold-producing medium mixing (at 9A point in Fig. 1) of (at 5A point in Fig. 1), passes through
The evaporation side phase transformation of the second heat exchanger 10 heats up, from the second heat exchanger 10 effluent air cold-producing medium (such as 1A point Fig. 1
Place) enter the import of the first compressor 11, so far complete the kind of refrigeration cycle of high temperature section.
During sub-cooling cycle system 200 work of the second level, the second refrigerant (R23 as shown in 18A point in Fig. 1
Refrigerant vapor) after the compression of the second compressor 21, it is thus achieved that the refrigerant vapour of High Temperature High Pressure is (such as 10A point in Fig. 1
Place), hybrid refrigeration steam enters in the condensation side of the second heat exchanger 10 and condenses, and condensed refrigerant liquid is (such as figure
In 1 at 11A point) enter the second throttling arrangement 22 throttling expansion, the gas-liquid two-phase mix refrigerant after throttling is (such as Fig. 1
At middle 12A point) minute two-way, a road (at 14A point in Fig. 1) through the regulation of the second stop valve 26 (in Fig. 1
At 15A point) flow into the second auxiliary heat exchanger 25, from the second auxiliary heat exchanger 25 refrigerant gas out (such as 16A Fig. 1
At Dian) the gas-liquid two-phase cold-producing medium that exports (in figure at 13A point) with the second throttling arrangement 22 mixes (such as 17A in Fig. 1
At Dian), the evaporation side phase transformation through the 3rd heat exchanger 20 heats up, from the 3rd heat exchanger 20 effluent air cold-producing medium (such as figure
In 1 at 18A point) enter the import of the second compressor 21, so far complete the kind of refrigeration cycle of middle-temperature section.
During the work of the third level sub-cooling cycle system 300, the 3rd cold-producing medium (R14 as shown in 22A point in Fig. 1
Refrigerant vapor) after the compression of the 3rd compressor 31, it is thus achieved that the refrigerant vapour of High Temperature High Pressure is (such as 19A point in Fig. 1
Place), the calm survey of hybrid refrigeration steam entrance the 3rd heat exchanger 20 condenses, condensed refrigerant liquid is (such as figure
In 1 at 20A point) enter the 3rd throttling arrangement 32 throttling expansion, the gas-liquid two-phase mix refrigerant after throttling is (such as Fig. 1
At middle 21A point) flow into the 4th heat exchanger 33, from the 4th heat exchanger 33 refrigerant gas out (such as 22A point Fig. 1
Place) enter compressor inlet, so far complete the kind of refrigeration cycle of low-temperature zone.
Thus, according to the refrigeration system 1000 of this example, by the high temperature section of three grades of cascade refrigeration blood circulation and middle-temperature section
It is respectively provided with the first auxiliary heat exchanger 16 and the second auxiliary heat exchanger 25, it is hereby achieved that the system that relative 4th heat exchanger 33 is different
Cold temperature, to produce three different cryogenic temperatures and different refrigerating capacitys, thus drastically increases this refrigeration system 1000
Range.It addition, by arranging the first stop valve 17 and the second stop valve 26, by regulating the first stop valve 17 He
The aperture of the second stop valve 26, thus it is possible to vary the first auxiliary heat exchanger 16 and the evaporating temperature of the second auxiliary heat exchanger 25 and refrigerating capacity,
The second heat exchanger 10 and heat exchange amount of the 3rd heat exchanger 20 can also be regulated simultaneously, and then improve the operation of refrigeration system 1000
Effect, promotes the stability that refrigeration system 1000 controls.
To sum up, compared with three grades of steam compression type cascade refrigeration circulations in correlation technique, refrigeration system 1000 is passed through herein
A vaporizer the most in parallel in two-stage subsystem in three grades of cascade refrigeration circulations, so that this two-stage all has part to freeze
Agent carries out throttling refrigeration, such that it is able to obtain three different cryogenic temperatures in system is run, and then can be greatly improved multiple
Fold cold range, reliability and stability.
Here, it should be noted that mentioned above three grades of steam compression type cascade refrigeration blood circulation are for illustrating
Purpose, but those of ordinary skill after having read above technical scheme, be clearly understood that the program be applied to two
In the technical scheme of level, level Four or more stages, within this also falls into protection domain of the present utility model.
According to the refrigeration system of this utility model second aspect embodiment, including: multistage sub-cooling cycle system, specifically,
Sub-cooling cycle system at least two-stage, such as two grades, three grades of (refrigeration systems 1000 of the most above-mentioned first aspect embodiment
In, refrigeration system 1000 includes three grades of sub-cooling cycle systems), level Four etc., every grade of sub-cooling cycle system all includes successively
Compressor, condenser, throttling arrangement and the vaporizer connected.
Preferably, the boiling point of the cold-producing medium in every grade of sub-cooling cycle system is all higher than in the sub-cooling cycle system of its rear stage
Cold-producing medium boiling point (in the refrigeration system 1000 of the most above-mentioned first aspect embodiment, the sub-cooling cycle system of the first order
The boiling point of the first cold-producing medium in 100 more than the boiling point of the second refrigerant in the sub-cooling cycle system in the second level 200, second
The boiling point of the second refrigerant in the sub-cooling cycle system 200 of level is more than the 3rd system in the sub-cooling cycle system of the third level 300
The boiling point of cryogen).
In addition to the sub-cooling cycle system of the first order 100, the condenser in every grade of sub-cooling cycle system all with for its previous stage
Sub-cooling cycle system in vaporizer, say, that the condenser in every grade of sub-cooling cycle system all with its previous stage
Sub-cooling cycle system in vaporizer be the same heat exchanger (refrigeration system 1000 of the most above-mentioned first aspect embodiment
In, the condenser in the sub-cooling cycle system in the second level 200 and the vaporizer in the sub-cooling cycle system of the first order are same
In the sub-cooling cycle system of individual second heat exchanger 10, the condenser in the sub-cooling cycle system of the third level 300 and the second level
Vaporizer is same 3rd heat exchanger 20).
Wherein, at least connect between throttling arrangement and the vaporizer in the sub-cooling cycle system of one-level and have auxiliary heat exchanger, namely
Saying, can only have between throttling arrangement and vaporizer in the sub-cooling cycle system of one-level to connect has auxiliary heat exchanger, it is possibility to have
Connect between throttling arrangement and vaporizer in multistage sub-cooling cycle system and have auxiliary heat exchanger (the most above-mentioned first aspect enforcement
In the refrigeration system 1000 of example, there is the sub-cooling cycle system of two-stage (the respectively sub-cooling cycle system of the first order 100 and second
The sub-cooling cycle system 200 of level) in throttling arrangement and vaporizer between connect and have auxiliary heat exchanger (the respectively first secondary heat exchange
Device 16 and the second auxiliary heat exchanger 25).
Thus, according to the refrigeration system of this utility model embodiment, by arranging at least one auxiliary heat exchanger, so that system
Cooling system can obtain the refrigeration of multiple different evaporating temperature, so can be greatly enhanced refrigeration system range,
Reliability and stability.
In an embodiment of the present utility model, connecting to have between the throttling arrangement of auxiliary heat exchanger and vaporizer to connect has at least
Two branch roads in parallel, say, that connect and connect between outlet and the import of vaporizer of the throttling arrangement having auxiliary heat exchanger
The branch road of multiple parallel connections, wherein, at least one branch road is provided with auxiliary heat exchanger, say, that one or more than one
Auxiliary heat exchanger all can be set on branch road, so that refrigeration system can obtain more different refrigeration.Preferably,
Connect to have on the branch road of auxiliary heat exchanger and further turned on valve (such as stop valve), thus valve can regulate auxiliary heat exchanger
Evaporating temperature and refrigerating capacity, and the heat exchange amount of vaporizer, and then improve the operational effect of refrigeration system, promote refrigeration system
The stability controlled.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance or
The implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or hidden
One or more this feature are included containing ground.In description of the present utility model, " multiple " be meant that two or two with
On, unless otherwise expressly limited specifically.
In this utility model, unless otherwise clearly defined and limited, term " install ", " on ", " on ", " fixing "
Should be interpreted broadly Deng term, connect for example, it may be fixing, it is also possible to be detachable connection, or integral；Can be
Directly connect, it is also possible to indirectly connected by intermediary, can be connection or two elements mutual of two element internals
Interactively.For the ordinary skill in the art, can understand that above-mentioned term is new in this practicality as the case may be
Concrete meaning in type.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " concrete example ",
Or specific features, structure, material or the feature bag that the description of " some examples " etc. means to combine this embodiment or example describes
It is contained at least one embodiment of the present utility model or example.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be
Any one or multiple embodiment or example combine in an appropriate manner.Additionally, in the case of the most conflicting, this area
Technical staff the feature of the different embodiments described in this specification or example and different embodiment or example can be carried out
In conjunction with and combination.
Embodiment the most of the present utility model, it will be understood by those skilled in the art that: not
These embodiments can be carried out multiple change in the case of departing from principle of the present utility model and objective, revise, replace and become
Type, scope of the present utility model is limited by claim and equivalent thereof.
Claims (10)
1. a refrigeration system, it is characterised in that including:
The sub-cooling cycle system of the first order, including the first compressor in turn switched on, First Heat Exchanger, first throttle device,
And second heat exchanger；
The sub-cooling cycle system in the second level, including the second compressor in turn switched on, described second heat exchanger, the second throttling dress
Put and the 3rd heat exchanger；
The sub-cooling cycle system of the third level, including the 3rd compressor in turn switched on, described 3rd heat exchanger, the 3rd throttling dress
Put and the 4th heat exchanger；
Wherein, between described first throttle device and described second heat exchanger, connection has the first auxiliary heat exchanger and/or described second
Connect between throttling arrangement and described 3rd heat exchanger and have the second auxiliary heat exchanger and/or described 3rd throttling arrangement and the described 4th
Connect between heat exchanger and have the 3rd auxiliary heat exchanger.
Refrigeration system the most according to claim 1, it is characterised in that described first throttle device and described second heat exchange
Connecting the first branch road and the second branch road having parallel connection between device, described first auxiliary heat exchanger turns on described second branch road.
Refrigeration system the most according to claim 2, it is characterised in that also connect on described second branch road and have the first cut-off
Valve.
Refrigeration system the most according to claim 1, it is characterised in that described second throttling arrangement and described 3rd heat exchange
Connecting the 3rd branch road and the 4th branch road having parallel connection between device, described second auxiliary heat exchanger turns on described 4th branch road.
Refrigeration system the most according to claim 4, it is characterised in that further turned on second on described 4th branch road
Stop valve.
Refrigeration system the most according to claim 1, it is characterised in that described first throttle device, described second throttling
At least one in device, described 3rd throttling arrangement is electric expansion valve.
7. according to the refrigeration system according to any one of claim 1-6, it is characterised in that the sub-kind of refrigeration cycle of the described first order
In system, the boiling point of the first cold-producing medium of circulation is higher than the boiling of the second refrigerant of circulation in the sub-cooling cycle system in the described second level
Point, and/or the boiling point of described second refrigerant is higher than the boiling of the 3rd cold-producing medium of circulation in the sub-cooling cycle system of the described third level
Point.
8. a refrigeration system, it is characterised in that including:
Multistage sub-cooling cycle system, compressor that every grade of described sub-cooling cycle system all includes in turn switching on, condenser,
Throttling arrangement and vaporizer, the described condenser in every grade of described sub-cooling cycle system is the described son of its previous stage
Vaporizer in cooling cycle system, wherein, at least the described throttling arrangement in sub-cooling cycle system described in one-level is with described
Connect between vaporizer and have auxiliary heat exchanger.
Refrigeration system the most according to claim 8, it is characterised in that connect the described throttling dress having described auxiliary heat exchanger
Putting and connect the branch road having at least two in parallel between described vaporizer, at least one described branch road is provided with described auxiliary heat exchanger.
Refrigeration system the most according to claim 9, it is characterised in that connect the described branch road having described auxiliary heat exchanger
On further turned on valve.
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| CN107120916A (en) * | 2017-05-08 | 2017-09-01 | 上海理工大学 | Superposition type dual temperature drying system |
| CN109210817A (en) * | 2018-10-22 | 2019-01-15 | 重庆优玛泰思特仪器有限公司 | Three-level cascade refrigeration system |
| CN109506382A (en) * | 2018-12-25 | 2019-03-22 | 天津商业大学 | The direct condensation by contact cooling cycle system of three warm cooling supply |
| CN109506383A (en) * | 2018-12-25 | 2019-03-22 | 天津商业大学 | The direct condensation by contact cooling cycle system of three-level overlapping |
| CN109520167A (en) * | 2019-01-02 | 2019-03-26 | 天津城建大学 | A kind of multistage folding type cooling system for large-size air conditioning system |
| CN111623565A (en) * | 2020-06-02 | 2020-09-04 | 青岛海尔空调器有限总公司 | Throttling device, refrigerant circulation system and dehumidifier |
| CN113019487A (en) * | 2021-03-02 | 2021-06-25 | 重庆浩生科技有限公司 | Temperature change test system capable of cooling to extremely low temperature at high rate |
| CN113654260A (en) * | 2021-08-02 | 2021-11-16 | 北京京仪自动化装备技术股份有限公司 | Double-circulation temperature control equipment and method for cascade refrigeration system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107120916A (en) * | 2017-05-08 | 2017-09-01 | 上海理工大学 | Superposition type dual temperature drying system |
| CN109210817A (en) * | 2018-10-22 | 2019-01-15 | 重庆优玛泰思特仪器有限公司 | Three-level cascade refrigeration system |
| EP3879205A4 (en) * | 2018-11-07 | 2022-08-03 | Shinwa Controls Co., Ltd. | Temperature adjustment system |
| CN109506382A (en) * | 2018-12-25 | 2019-03-22 | 天津商业大学 | The direct condensation by contact cooling cycle system of three warm cooling supply |
| CN109506383A (en) * | 2018-12-25 | 2019-03-22 | 天津商业大学 | The direct condensation by contact cooling cycle system of three-level overlapping |
| CN109520167A (en) * | 2019-01-02 | 2019-03-26 | 天津城建大学 | A kind of multistage folding type cooling system for large-size air conditioning system |
| CN111623565A (en) * | 2020-06-02 | 2020-09-04 | 青岛海尔空调器有限总公司 | Throttling device, refrigerant circulation system and dehumidifier |
| CN113019487A (en) * | 2021-03-02 | 2021-06-25 | 重庆浩生科技有限公司 | Temperature change test system capable of cooling to extremely low temperature at high rate |
| CN113654260A (en) * | 2021-08-02 | 2021-11-16 | 北京京仪自动化装备技术股份有限公司 | Double-circulation temperature control equipment and method for cascade refrigeration system |
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