CN102901261A - Two-stage multi-unit single-throttling incomplete-intercooling refrigeration system - Google Patents
Two-stage multi-unit single-throttling incomplete-intercooling refrigeration system Download PDFInfo
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- CN102901261A CN102901261A CN2012104525207A CN201210452520A CN102901261A CN 102901261 A CN102901261 A CN 102901261A CN 2012104525207 A CN2012104525207 A CN 2012104525207A CN 201210452520 A CN201210452520 A CN 201210452520A CN 102901261 A CN102901261 A CN 102901261A
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 72
- 239000007788 liquid Substances 0.000 claims abstract description 48
- 230000008676 import Effects 0.000 claims description 29
- 238000001816 cooling Methods 0.000 claims description 28
- 238000010438 heat treatment Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 abstract description 39
- 238000007906 compression Methods 0.000 abstract description 39
- 239000003507 refrigerant Substances 0.000 description 24
- 238000010586 diagram Methods 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 238000004378 air conditioning Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 239000000110 cooling liquid Substances 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention discloses a two-stage multi-unit single-throttling incomplete-intercooling refrigeration system, and provides the refrigeration system which utilizes valve switching to realize single-stage compression and two-stage compression circulation. The refrigeration system comprises a first air intake pipeline, a second air intake pipeline, a high pressure liquid supply pipeline, a first evaporator, a second evaporator, a first throttling device, a second throttling device and a plurality of double-compressor units, wherein each double-compressor unit comprises a first compressor, a second compressor, a first valve, a second valve, a third valve, a fourth valve, a fifth valve, a sixth valve, a condenser, a third throttling device and an inter-cooler. The refrigeration system consists of a plurality of double-compressor units connected in parallel to the first air intake pipeline, the second air intake pipeline and the high pressure liquid supply pipeline, and single-stage compression and two-stage compression are realized through the opening or closing of the internal valves, and each compressor in the double-compressor unit can be used individually. The system is small in one-time investment, and flexible in adjustment, and the temperature fluctuation in a refrigerated warehouse is small.
Description
Technical field
The present invention relates to refrigeration technology field, particularly relate to the refrigeration system of not exclusively cooling off in the middle of the multi-joint throttling of a kind of twin-stage.
Background technology
The multi-connected air conditioning system that is comprised of many off-premises stations and Duo Tai indoor set is with its flexible operation, and Energy Efficiency Ratio is high, is easy to control and is widely used in field of air conditioning.But existing multi-gang air conditioner all is single-stage compression refrigeration system, is only applicable to field of air conditioning.And for picture multi-stage temperature refrigerator, how warm refrigerator car etc., when single-stage compression refrigeration system (being generally used for the high-temperature refrigeration environment) and double-stage compressive refrigerating system (being generally used for the cryogenic refrigeration environment) and when depositing, need to be to high and low temperature refrigerating environment separate configurations refrigeration system, and can not switch each other, cause the waste in the refrigerating plant configuration, the present or blank of technology for the multi-connected machine that can be common to single-stage and Two-stage Compression kind of refrigeration cycle.
Summary of the invention
The objective of the invention is for the technological deficiency that exists in the prior art, utilize the valve switching can realize the single stage compress circulation and provide a kind of, can realize again the refrigeration system of not exclusively cooling off in the middle of the multi-joint throttling of twin-stage of Two-stage Compression circulation.
For realizing that the technical scheme that purpose of the present invention adopts is:
The refrigeration system of not exclusively cooling off in the middle of the multi-joint throttling of a kind of twin-stage, it is characterized in that, comprise the first suction line, the second suction line, high pressure liquid feeding pipeline, the first evaporimeter, the second evaporimeter, first throttle device, the second throttling arrangement and organize the double-compressor group more; Every group of described double-compressor group comprises the first compressor, the second compressor, the first valve, the second valve, the 3rd valve, the 4th valve, the 5th valve, the 6th valve, condenser, the 3rd throttling arrangement and intercooler, and described many group double-compressor groups are connected between the first suction line, the second suction line and the high pressure liquid feeding pipeline side by side; Described the first evaporimeter is used for the high-temperature refrigeration environment, and described the second evaporimeter is used for the cryogenic refrigeration environment; The pipe side outlet of the intercooler of every group of described double-compressor group is connected with described high pressure liquid feeding pipeline respectively, the described high pressure liquid feeding pipeline other end links to each other with described the second throttling arrangement import with the import of described first throttle device respectively, described first throttle device outlet is connected with described the first evaporator, described the first evaporator outlet is connected with described the first suction line, described the second throttling arrangement outlet is connected with described the second evaporator, and described the second evaporator outlet is connected with described the second suction line; The described first suction line other end is connected with the 3rd valve inlet with the second valve inlet of every group of described double-compressor group respectively, and the described second suction line other end is connected with the first valve inlet of every group of described double-compressor group; Be connected with the air entry of described the first compressor after the outlet parallel connection of the outlet of described the first valve and described the second valve, the exhaust outlet of described the first compressor respectively with described the 4th valve inlet, described the 5th valve inlet be connected intercooler shell-side outlet and connect, be connected with described the second compressor air suction mouth after described the 3rd valve export and described the 4th valve export parallel connection, be connected with described condenser inlet after described the second exhaust outlet of compressor and described the 5th valve export parallel connection, the outlet one tunnel of described condenser is connected with the pipe side-entrance of described intercooler, another road by described the 6th valve be connected the 3rd throttling arrangement and be connected with the shell-side inlet of described intercooler.
The refrigeration system of not exclusively cooling off in the middle of the multi-joint throttling of a kind of twin-stage, it is characterized in that, comprise the first suction line, the second suction line, high pressure liquid feeding pipeline, the first evaporimeter, the second evaporimeter, first throttle device, the second throttling arrangement and organize the double-compressor group more; Every group of described double-compressor group comprises the first compressor, the second compressor, the first valve, the second valve, the 3rd valve, the 4th valve, the 5th valve, the 6th valve, condenser, the 3rd throttling arrangement and intercooler, and described many group double-compressor groups are connected between the first suction line, the second suction line and the high pressure liquid feeding pipeline side by side; Described the first evaporimeter is used for the high-temperature refrigeration environment, and described the second evaporimeter is used for the cryogenic refrigeration environment; The pipe side outlet of the intercooler of every group of described double-compressor group respectively with described high pressure liquid feeding pipeline be connected the 6th valve inlet and be connected, the described high pressure liquid feeding pipeline other end links to each other with described the second throttling arrangement import with the import of described first throttle device respectively, described first throttle device outlet is connected with described the first evaporator, described the first evaporator outlet is connected with described the first suction line, described the second throttling arrangement outlet is connected with described the second evaporator, and described the second evaporator outlet is connected with described the second suction line; The described first suction line other end is connected with the 3rd valve inlet with the second valve inlet of every group of described double-compressor group respectively, and the described second suction line other end is connected with the first valve inlet of every group of described double-compressor group; Be connected with the air entry of described the first compressor after the outlet parallel connection of the outlet of described the first valve and described the second valve, the exhaust outlet of described the first compressor respectively with described the 4th valve inlet, described the 5th valve inlet be connected intercooler shell-side outlet and connect, be connected with described the second compressor air suction mouth after described the 3rd valve export and described the 4th valve export parallel connection, be connected with described condenser inlet after described the second exhaust outlet of compressor and described the 5th valve export parallel connection, the outlet of described condenser is connected with the pipe side-entrance of described intercooler, the shell-side inlet of described intercooler through described the 3rd throttling arrangement be connected the 6th valve export and connect.
Compared with prior art, the invention has the beneficial effects as follows:
The refrigeration system of not exclusively cooling off in the middle of the multi-joint throttling of twin-stage of the present invention is by being connected in parallel in the first suction line, many groups double-compressor group of the second suction line and high pressure liquid feeding pipeline forms, unlatching by being connected in double-compressor group internal valves or close, each double-compressor group all can realize entering through single stage compress and with cold-producing medium from the first suction line is air-breathing that the high pressure liquid feeding pipeline is finished the single stage compress kind of refrigeration cycle and through Two-stage Compression cold-producing medium is entered the function that the high pressure liquid feeding pipeline is finished the Two-stage Compression kind of refrigeration cycle from the second suction line is air-breathing, and all can use separately at inner each compressor of single stage compress circulation time double-compressor group.Therefore, system can save one-time investment when having single stage compress circulation and Two-stage Compression circulation to need, be convenient to simultaneously refrigeration system energy-conservation, has improved the utilization ratio of refrigeration system, and the refrigeration system flexible adjustment, and the temperature fluctuation in the refrigerating environment is little.
Description of drawings
Figure 1 shows that the front throttle refrigeration system schematic diagram of cooling that not exclusively cools off in the middle of the multi-joint throttling of a kind of twin-stage of the present invention;
Figure 2 shows that in the middle of the multi-joint throttling of a kind of twin-stage of the present invention throttle refrigeration system schematic diagram after the not exclusively cooling of cooling.
Among the figure: 1. the first suction line, 2. the second suction line, 3. high pressure liquid feeding pipeline, 4-1. the first compressor, 4-2. the second compressor, 5-1. the first valve, 5-2. the second valve, 5-3. the 3rd valve, 5-4. the 4th valve, 5-5. the 5th valve, 5-6. the 6th valve, 6. condenser, 7-1. the first throttle device, 7-2. the second throttling arrangement, 7-3. the 3rd throttling arrangement, 8. intercooler, 9-1. the first evaporimeter, 9-2. the second evaporimeter.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
In the middle of the multi-joint throttling of twin-stage of the present invention fully the refrigeration system of cooling be divided in the middle of the multi-joint throttling of twin-stage throttle refrigeration system after the cooling of cooling off fully in the middle of fully front the throttle refrigeration system of cooling of cooling and the multi-joint throttling of twin-stage according to the difference of throttle position.
Embodiment 1
Figure 1 shows that the front throttle refrigeration system schematic diagram of cooling that not exclusively cools off in the middle of the multi-joint throttling of a kind of twin-stage of the present invention, comprise the first suction line 1, the second suction line 2, high pressure liquid feeding pipeline 3, the first evaporimeter 9-1, the second evaporimeter 9-2, first throttle device 7-1, the second throttling arrangement 7-2 and organize the double-compressor group more.Every group of described double-compressor group comprises the first compressor 4-1, the second compressor 4-2, the first valve 5-1, the second valve 5-2, the 3rd valve 5-3, the 4th valve 5-4, the 5th valve 5-5, the 6th valve 5-6, condenser 6, the 3rd throttling arrangement 7-3 and intercooler 8, and described many group double-compressor groups are connected between the first suction line 1, the second suction line 2 and the high pressure liquid feeding pipeline 3 side by side.Described the first evaporimeter 9-1 is used for the high-temperature refrigeration environment, and described the second evaporimeter 9-2 is used for the cryogenic refrigeration environment.The pipe side outlet of the intercooler 8 of every group of described double-compressor group is connected with described high pressure liquid feeding pipeline 3 respectively, described high pressure liquid feeding pipeline 3 other ends link to each other with described the second throttling arrangement 7-2 import with described first throttle device 7-1 import respectively, described first throttle device 7-1 outlet is connected with described the first evaporimeter 9-1 import, described the first evaporimeter 9-1 outlet is connected with described the first suction line 1, described the second throttling arrangement 7-2 outlet is connected with described the second evaporimeter 9-2 import, and described the second evaporimeter 9-2 outlet is connected with described the second suction line 2.Described the first suction line 1 other end is connected with the 3rd valve 5-3 import with the second valve 5-2 import of every group of described double-compressor group respectively, and described the second suction line 2 other ends are connected with the first valve 5-1 import of every group of described double-compressor group.Be connected with the air entry of described the first compressor 4-1 after the outlet parallel connection of the outlet of described the first valve 5-1 and described the second valve 5-2, the exhaust outlet of described the first compressor 4-1 respectively with described the 4th valve 5-4 import, described the 5th valve 5-5 import be connected intercooler 8 shell-sides outlets and connect, described the 3rd valve 5-3 outlet is connected with described the second compressor 4-2 air entry with described the 4th valve 5-4 outlet parallel connection is rear, described the second compressor 4-2 exhaust outlet is connected with described condenser 6 imports with described the 5th valve 5-5 outlet parallel connection is rear, the outlet one tunnel of described condenser 6 is connected with the pipe side-entrance of described intercooler 8, another road by described the 6th valve 5-6 be connected the 3rd throttling arrangement 7-3 and be connected with the shell-side inlet of described intercooler 8.
Any one double-compressor group all can be used as Two-stage Compression refrigeration unit and the use of single stage compress refrigeration unit in the front throttle refrigeration system of cooling that not exclusively cools off in the middle of the multi-joint throttling of the twin-stage of the present embodiment 1, and does not interfere with each other between the double-compressor group.
1, use as the Two-stage Compression refrigeration unit:
The second valve 5-2, the 3rd valve 5-3 and the 5th valve 5-5 close in the double-compressor group, and the first valve 5-1, the 4th valve 5-4 and the 6th valve 5-6 open.High pressure refrigerant liquid in the high pressure liquid feeding pipeline 3 enters in the second suction line 2 through the second throttling arrangement 7-2 reducing pressure by regulating flow in the second evaporimeter 9-2 behind the evaporation endothermic, enter through the first valve 5-1 and to carry out first order compression among the first compressor 4-1, middle compression refrigerant steam after the compression enters through the 4th valve 5-4 with the refrigerant mixed of coming from middle cooler 8 shell-sides outlet and carries out second level compression the second compressor 4-2, high-pressure refrigerant vapor after the compression is condensed into high pressure refrigerant liquid in condenser 6, out high pressure refrigerant liquid is divided into two parts from condenser 6, a part through the 6th valve 5-6 after throttling is middle compression refrigerant in the 3rd throttling arrangement 7-3 the shell-side inlet from middle cooler 8 enter heat exchange the intercooler 8, flow out from the shell-side outlet of middle cooler 8, be mixed among the second compressor 4-2 and compress as the middle compression refrigerant steam after the compression among cooling liquid and the first compressor 4-1, another part high pressure refrigerant liquid enters from the 8 pipe side-entrances of middle cooler, flows out to enter from middle cooler 8 pipe side outlets after the heat exchange and finishes the Two-stage Compression kind of refrigeration cycle the high pressure liquid feeding pipeline 3.
2, use as the single stage compress refrigeration unit:
The second valve 5-2, the 3rd valve 5-3 and the 5th valve 5-5 open in the double-compressor group, and the first valve 5-1, the 4th valve 5-4 and the 6th valve 5-6 close.High pressure refrigerant liquid in the high pressure liquid feeding pipeline 3 enters in the first suction line 1 through first throttle device 7-1 reducing pressure by regulating flow in the first evaporimeter 9-1 behind the evaporation endothermic, enter among the first compressor 4-1 and the second compressor 4-2 through the second valve 5-2 and the 3rd valve 5-3 respectively and compress, the high-pressure refrigerant vapor of high-pressure refrigerant vapor after the first compressor 4-1 compression after the 5th valve 5-5 and the second compressor 4-2 compression joined and entered condensation in the condenser 6, and the intercooler 8 of then flowing through enters and finishes the single stage compress kind of refrigeration cycle in the high-pressure liquid line 3.
When the second valve 5-2, the first valve 5-1, the 4th valve 5-4, the 5th valve 5-5 and the 6th valve 5-6 close, when the 3rd valve 5-3 opened, the second compressor 4-2, condenser 6, first throttle device 7-1, intercooler and the first evaporimeter 9-1 can finish separately the single stage compress kind of refrigeration cycle; When the 3rd valve 5-3, the first valve 5-1, the 4th valve 5-4 and the 6th valve 5-6 close, when the second valve, the 5th valve opening, the first compressor 4-1, condenser 6, first throttle device 7-1 and the first evaporimeter 9-1 can finish separately the single stage compress kind of refrigeration cycle.
Figure 2 shows that in the middle of the multi-joint throttling of a kind of twin-stage of the present invention throttle refrigeration system schematic diagram after the not exclusively cooling of cooling, comprise the first suction line 1, the second suction line 2, high pressure liquid feeding pipeline 3, the first evaporimeter 9-1, the second evaporimeter 9-2, first throttle device 7-1, the second throttling arrangement 7-2 and organize the double-compressor group more.Every group of described double-compressor group comprises the first compressor 4-1, the second compressor 4-2, the first valve 5-1, the second valve 5-2, the 3rd valve 5-3, the 4th valve 5-4, the 5th valve 5-5, the 6th valve 5-6, condenser 6, the 3rd throttling arrangement 7-3 and intercooler 8, and described many group double-compressor groups are connected between the first suction line 1, the second suction line 2 and the high pressure liquid feeding pipeline 3 side by side.Described the first evaporimeter 9-1 is used for the high-temperature refrigeration environment, and described the second evaporimeter 9-2 is used for the cryogenic refrigeration environment.The pipe side outlet of the intercooler 8 of every group of described double-compressor group respectively with described high pressure liquid feeding pipeline 3 be connected the 6th valve 5-6 import and be connected, described high pressure liquid feeding pipeline 3 other ends link to each other with described the second throttling arrangement 7-2 import with described first throttle device 7-1 import respectively, described first throttle device 7-1 outlet is connected with described the first evaporimeter 9-1 import, described the first evaporimeter 9-1 outlet is connected with described the first suction line 1, described the second throttling arrangement 7-2 outlet is connected with described the second evaporimeter 9-2 import, and described the second evaporimeter 9-2 outlet is connected with described the second suction line 2.Described the first suction line 1 other end is connected with the 3rd valve 5-3 import with the second valve 5-2 import of every group of described double-compressor group respectively, and described the second suction line 2 other ends are connected with the first valve 5-1 import of every group of described double-compressor group.Be connected with the air entry of described the first compressor 4-1 after the outlet parallel connection of the outlet of described the first valve 5-1 and described the second valve 5-2, the exhaust outlet of described the first compressor 4-1 respectively with described the 4th valve 5-4 import, described the 5th valve 5-5 import be connected intercooler 8 shell-sides outlets and connect, described the 3rd valve 5-3 outlet is connected with described the second compressor 4-2 air entry with described the 4th valve 5-4 outlet parallel connection is rear, described the second compressor 4-2 exhaust outlet is connected with described condenser 6 imports with described the 5th valve 5-5 outlet parallel connection is rear, the outlet of described condenser 6 is connected with the pipe side-entrance of described intercooler 8, and the shell-side inlet of described intercooler 8 is connected with described the 6th valve 5-6 outlet through described the 3rd throttling arrangement 7-3.
In the middle of the multi-joint throttling of the present embodiment 2 twin-stages not exclusively after the cooling of cooling in the throttle refrigeration system any one double-compressor group all can be used as the Two-stage Compression refrigeration unit and the single stage compress refrigeration unit is used, and do not interfere with each other between the double-compressor group.
1, use as the Two-stage Compression refrigeration unit:
The second valve 5-2, the 3rd valve 5-3 and the 5th valve 5-5 close in the double-compressor group, and the first valve 5-1, the 4th valve 5-4 and the 6th valve 5-6 open.High pressure refrigerant liquid in the high pressure liquid feeding pipeline 3 enters in the second suction line 2 through the second throttling arrangement 7-2 reducing pressure by regulating flow in the second evaporimeter 9-2 behind the evaporation endothermic, enter through the first valve 5-1 and to carry out first order compression among the first compressor 4-1, middle compression refrigerant steam after the compression enters through the 4th valve 5-4 with the refrigerant mixed of coming from middle cooler 8 shell-sides outlet and carries out second level compression the second compressor 4-2, high-pressure refrigerant vapor after the compression is condensed into high pressure refrigerant liquid in condenser 6, out high pressure refrigerant liquid enters from the 8 pipe side-entrances of middle cooler from condenser 6, after flowing out, middle cooler 8 pipe side outlets are divided into two parts after the heat exchange, a part through the 6th valve 5-6 after throttling is middle compression refrigerant in the 3rd throttling arrangement 7-3 the shell-side inlet from middle cooler 8 enter heat exchange the intercooler 8, flow out from the shell-side outlet of middle cooler 8, be mixed among the second compressor 4-2 and compress as the middle compression refrigerant steam after the compression among cooling liquid and the first compressor 4-1, another part high pressure refrigerant liquid enters and finishes the Two-stage Compression kind of refrigeration cycle in the high pressure liquid feeding pipeline 3.
2, use as the single stage compress refrigeration unit:
The second valve 5-2, the 3rd valve 5-3 and the 5th valve 5-5 open in the double-compressor group, and the first valve 5-1, the 4th valve 5-4 and the 6th valve 5-6 close.High pressure refrigerant liquid in the high pressure liquid feeding pipeline 3 enters in the first suction line 1 through first throttle device 7-1 reducing pressure by regulating flow in the first evaporimeter 9-1 behind the evaporation endothermic, enter among the first compressor 4-1 and the second compressor 4-2 through the second valve 5-2 and the 3rd valve 5-3 respectively and compress, the high-pressure refrigerant vapor of high-pressure refrigerant vapor after the first compressor 4-1 compression after the 5th valve 5-5 and the second compressor 4-2 compression joined and entered condensation in the condenser 6, and the intercooler 8 of then flowing through enters and finishes the single stage compress kind of refrigeration cycle in the high-pressure liquid line 3.
When the second valve 5-2, the first valve 5-1, the 4th valve 5-4, the 5th valve 5-5 and the 6th valve 5-6 close, when the 3rd valve 5-3 opened, the second compressor 4-2, condenser 6, intercooler 8, first throttle device 7-1 and the first evaporimeter 9-1 can finish separately the single stage compress kind of refrigeration cycle; When the second valve 5-2, the 3rd valve 5-1, the 4th valve 5-4 and the 6th valve 5-6 close, when the first valve 5-3 and the 5th valve opening, the first compressor 4-1, condenser 6, first throttle device 7-1 and the first evaporimeter 9-1 can finish separately the single stage compress kind of refrigeration cycle.
Among above-described embodiment 1 and the embodiment 2: described first throttle device, the second throttling arrangement, the 3rd throttling arrangement are any in heating power expansion valve, electric expansion valve, capillary, the throttle orifice plate apparatus, or other throttling arrangement.Described condenser is air-cooled condenser, water-cooled condenser or evaporative condenser, also can be the condenser of other pattern.Described the first valve, the second valve, the 3rd valve, the 4th valve, the 5th valve, the 6th valve are the valve of hand-operated valve, motor-driven valve, triple valve, cross valve or other pattern, can be ball valve or gate valve.Described intercooler can be plate type heat exchanger or other pattern heat exchanger.
Refrigeration system of the present invention is utilized valve to switch and can be realized the single stage compress circulation, can realize again the Two-stage Compression circulation, and inner each compressor of double-compressor group all can use separately.Therefore, system can save one-time investment when having single stage compress and Two-stage Compression to need, be convenient to simultaneously refrigeration system energy-conservation, has improved the utilization ratio of refrigeration system, and the refrigeration system flexible adjustment, and temperature fluctuation is little in the refrigerating environment.
The above only is preferred embodiment of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (8)
1. the incomplete refrigeration system of cooling in the middle of the multi-joint throttling of a twin-stage, it is characterized in that, comprise the first suction line, the second suction line, high pressure liquid feeding pipeline, the first evaporimeter, the second evaporimeter, first throttle device, the second throttling arrangement and organize the double-compressor group more; Every group of described double-compressor group comprises the first compressor, the second compressor, the first valve, the second valve, the 3rd valve, the 4th valve, the 5th valve, the 6th valve, condenser, the 3rd throttling arrangement and intercooler, and described many group double-compressor groups are connected between the first suction line, the second suction line and the high pressure liquid feeding pipeline side by side; Described the first evaporimeter is used for the high-temperature refrigeration environment, and described the second evaporimeter is used for the cryogenic refrigeration environment; The pipe side outlet of the intercooler of every group of described double-compressor group is connected with described high pressure liquid feeding pipeline respectively, the described high pressure liquid feeding pipeline other end links to each other with described the second throttling arrangement import with the import of described first throttle device respectively, described first throttle device outlet is connected with described the first evaporator, described the first evaporator outlet is connected with described the first suction line, described the second throttling arrangement outlet is connected with described the second evaporator, and described the second evaporator outlet is connected with described the second suction line; The described first suction line other end is connected with the 3rd valve inlet with the second valve inlet of every group of described double-compressor group respectively, and the described second suction line other end is connected with the first valve inlet of every group of described double-compressor group; Be connected with the air entry of described the first compressor after the outlet parallel connection of the outlet of described the first valve and described the second valve, the exhaust outlet of described the first compressor respectively with described the 4th valve inlet, described the 5th valve inlet be connected intercooler shell-side outlet and connect, be connected with described the second compressor air suction mouth after described the 3rd valve export and described the 4th valve export parallel connection, be connected with described condenser inlet after described the second exhaust outlet of compressor and described the 5th valve export parallel connection, the outlet one tunnel of described condenser is connected with the pipe side-entrance of described intercooler, another road by described the 6th valve be connected the 3rd throttling arrangement and be connected with the shell-side inlet of described intercooler.
2. the refrigeration system of not exclusively cooling off in the middle of the multi-joint throttling of twin-stage according to claim 1, it is characterized in that, described first throttle device, the second throttling arrangement, the 3rd throttling arrangement are any in heating power expansion valve, electric expansion valve, capillary, the throttle orifice plate apparatus.
3. the refrigeration system of not exclusively cooling off in the middle of the multi-joint throttling of twin-stage according to claim 1 is characterized in that described condenser is air-cooled condenser, water-cooled condenser or evaporative condenser.
4. the refrigeration system of not exclusively cooling off in the middle of the multi-joint throttling of twin-stage according to claim 1, it is characterized in that, described the first valve, the second valve, the 3rd valve, the 4th valve, the 5th valve, the 6th valve are hand-operated valve, motor-driven valve, triple valve or cross valve.
5. the incomplete refrigeration system of cooling in the middle of the multi-joint throttling of a twin-stage, it is characterized in that, comprise the first suction line, the second suction line, high pressure liquid feeding pipeline, the first evaporimeter, the second evaporimeter, first throttle device, the second throttling arrangement and organize the double-compressor group more; Every group of described double-compressor group comprises the first compressor, the second compressor, the first valve, the second valve, the 3rd valve, the 4th valve, the 5th valve, the 6th valve, condenser, the 3rd throttling arrangement and intercooler, and described many group double-compressor groups are connected between the first suction line, the second suction line and the high pressure liquid feeding pipeline side by side; Described the first evaporimeter is used for the high-temperature refrigeration environment, and described the second evaporimeter is used for the cryogenic refrigeration environment; The pipe side outlet of the intercooler of every group of described double-compressor group respectively with described high pressure liquid feeding pipeline be connected the 6th valve inlet and be connected, the described high pressure liquid feeding pipeline other end links to each other with described the second throttling arrangement import with the import of described first throttle device respectively, described first throttle device outlet is connected with described the first evaporator, described the first evaporator outlet is connected with described the first suction line, described the second throttling arrangement outlet is connected with described the second evaporator, and described the second evaporator outlet is connected with described the second suction line; The described first suction line other end is connected with the 3rd valve inlet with the second valve inlet of every group of described double-compressor group respectively, and the described second suction line other end is connected with the first valve inlet of every group of described double-compressor group; Be connected with the air entry of described the first compressor after the outlet parallel connection of the outlet of described the first valve and described the second valve, the exhaust outlet of described the first compressor respectively with described the 4th valve inlet, described the 5th valve inlet be connected intercooler shell-side outlet and connect, be connected with described the second compressor air suction mouth after described the 3rd valve export and described the 4th valve export parallel connection, be connected with described condenser inlet after described the second exhaust outlet of compressor and described the 5th valve export parallel connection, the outlet of described condenser is connected with the pipe side-entrance of described intercooler, the shell-side inlet of described intercooler through described the 3rd throttling arrangement be connected the 6th valve export and connect.
6. the refrigeration system of cooling off fully in the middle of the multi-joint throttling of twin-stage according to claim 5, it is characterized in that, described first throttle device, the second throttling arrangement, the 3rd throttling arrangement are any in heating power expansion valve, electric expansion valve, capillary, the throttle orifice plate apparatus.
7. the refrigeration system of cooling off fully in the middle of the multi-joint throttling of twin-stage according to claim 5 is characterized in that described condenser is air-cooled condenser, water-cooled condenser or evaporative condenser.
8. the refrigeration system of cooling off fully in the middle of the multi-joint throttling of twin-stage according to claim 5, it is characterized in that, described the first valve, the second valve, the 3rd valve, the 4th valve, the 5th valve, the 6th valve are hand-operated valve, motor-driven valve, triple valve or cross valve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210452520.7A CN102901261B (en) | 2012-11-12 | 2012-11-12 | Two-stage multi-unit single-throttling incomplete-intercooling refrigeration system |
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| CN103322718A (en) * | 2013-07-04 | 2013-09-25 | 天津商业大学 | Two-stage-throttling incomplete-intercooling double-duty refrigerating system |
| CN103335436A (en) * | 2013-07-04 | 2013-10-02 | 天津商业大学 | One-stage throttling complete-inter-cooling variable-flow twin-stage compression refrigerating system |
| CN103335438A (en) * | 2013-07-04 | 2013-10-02 | 天津商业大学 | One-stage throttling incomplete-inter-cooling variable-flow twin-stage compression refrigerating system |
| CN105758047A (en) * | 2016-05-03 | 2016-07-13 | 天津商业大学 | Variable-flow single-working medium cascade refrigeration system with common condenser and common evaporator |
| CN105758048A (en) * | 2016-05-03 | 2016-07-13 | 天津商业大学 | Variable-flow single-working medium cascade refrigeration system with parallel condensers and parallel evaporators |
| CN105758049A (en) * | 2016-05-03 | 2016-07-13 | 天津商业大学 | Variable-flow single-working medium cascade heat pump system with parallel heat exchangers |
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| EP3881018A1 (en) | 2018-11-12 | 2021-09-22 | Carrier Corporation | Compact heat exchanger assembly for a refrigeration system |
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| CN105758049A (en) * | 2016-05-03 | 2016-07-13 | 天津商业大学 | Variable-flow single-working medium cascade heat pump system with parallel heat exchangers |
| CN105783326A (en) * | 2016-05-03 | 2016-07-20 | 天津商业大学 | Variable-flow single-working-medium sharing heat exchanger overlapping heat pump system |
| CN105758049B (en) * | 2016-05-03 | 2018-07-20 | 天津商业大学 | Variable-flow either simplex matter heat exchangers in parallel overlapping heat pump system |
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| CN105783326B (en) * | 2016-05-03 | 2019-01-22 | 天津商业大学 | Variable-flow either simplex matter common heat exchanger overlapping heat pump system |
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