CN102901278B - Two-stage multi-unit single-throttling complete-intercooling refrigeration system - Google Patents
Two-stage multi-unit single-throttling complete-intercooling refrigeration system Download PDFInfo
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- CN102901278B CN102901278B CN201210452609.3A CN201210452609A CN102901278B CN 102901278 B CN102901278 B CN 102901278B CN 201210452609 A CN201210452609 A CN 201210452609A CN 102901278 B CN102901278 B CN 102901278B
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 76
- 239000007788 liquid Substances 0.000 claims abstract description 57
- 230000008676 import Effects 0.000 claims description 41
- 238000001816 cooling Methods 0.000 claims description 35
- 239000007792 gaseous phase Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 abstract description 31
- 238000007906 compression Methods 0.000 abstract description 31
- 239000003507 refrigerant Substances 0.000 description 23
- 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
- 238000004134 energy conservation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
The invention discloses a two-stage multi-unit single-throttling complete-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 system 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 middle cooling refrigeration system completely of the multi-joint throttling of a kind of twin-stage.
Background technology
The multi-connected air conditioning system being made up 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 is all 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 high-temperature refrigeration environment) and double-stage compressive refrigerating system (being generally used for cryogenic refrigeration environment) and while 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 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 object of the invention is for the technological deficiency existing in prior art, can realize single stage compress circulation and provide one to utilize valve to switch, can realize again the middle cooling refrigeration system completely of the multi-joint throttling of twin-stage of Two-stage Compression circulation.
For realizing the technical scheme that object of the present invention adopts be:
Complete cooling refrigeration system 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 double-compressor group more, described in every group, 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 high pressure liquid feeding pipeline side by side, described the first evaporimeter is for high-temperature refrigeration environment, and described the second evaporimeter is for cryogenic refrigeration environment, described in every group, the pipe side outlet of the intercooler of double-compressor group is connected with described high pressure liquid feeding pipeline respectively, the described high pressure liquid feeding pipeline other end is connected 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, described the first suction line is connected with the second valve inlet and the 3rd valve inlet of double-compressor group described in every group respectively, and described the second suction line is connected with the first valve inlet of double-compressor group described in every group, after the outlet parallel connection of the outlet of described the first valve and described the second valve, be connected with the air entry of described the first compressor, the exhaust outlet of described the first compressor is connected with the import of the 4th valve and the import of the 5th valve respectively, described the 4th outlet of valve and the liquid level of described intercooler below shell-side inlet are connected, after the shell-side gaseous phase outlet parallel connection of the outlet of described the 3rd valve and described intercooler, be connected with the air entry of described the second compressor, after the outlet parallel connection of the exhaust outlet of described the second compressor and described the 5th valve, be connected with the import of described condenser, outlet one tunnel of described condenser is connected with the pipe side-entrance of described intercooler, described the 6th valve of separately leading up to is connected with the shell-side inlet of described intercooler with described the 3rd throttling arrangement.
Complete cooling refrigeration system 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 double-compressor group more, described in every group, 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 high pressure liquid feeding pipeline side by side, described the first evaporimeter is for high-temperature refrigeration environment, and described the second evaporimeter is for cryogenic refrigeration environment, described in every group, the pipe side outlet of the intercooler of double-compressor group is connected with described high pressure liquid feeding pipeline and the 6th valve inlet respectively, the described high pressure liquid feeding pipeline other end is connected 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, described the first suction line is connected with the second valve inlet and the 3rd valve inlet of double-compressor group described in every group respectively, and described the second suction line is connected with the first valve inlet of double-compressor group described in every group, after the outlet parallel connection of the outlet of described the first valve and described the second valve, be connected with the air entry of described the first compressor, the exhaust outlet of described the first compressor is connected with the import of the 4th valve and the import of the 5th valve respectively, described the 4th outlet of valve and the liquid level of described intercooler below shell-side inlet are connected, after the shell-side gaseous phase outlet parallel connection of the outlet of described the 3rd valve and described intercooler, be connected with the air entry of described the second compressor, after the outlet parallel connection of the exhaust outlet of described the second compressor and described the 5th valve, be connected with the import of described condenser, the outlet of described condenser is connected with the pipe side-entrance of described intercooler, the shell-side inlet of described intercooler is connected with described the 6th valve through described the 3rd throttling arrangement.
Compared with prior art, the invention has the beneficial effects as follows:
Refrigeration system completely cooling 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 composition of the second suction line and high pressure liquid feeding pipeline, by being connected in the unlatching of double-compressor group internal valves or closing, each double-compressor group all can realize from the first suction line air-breathing through single stage compress and cold-producing medium is entered to high pressure liquid feeding pipeline complete single stage compress kind of refrigeration cycle and air-breathing through Two-stage Compression and cold-producing medium is entered to high pressure liquid feeding pipeline and completes the function of Two-stage Compression kind of refrigeration cycle from the second suction line, and all can use separately at inner each compressor of single stage compress circulation time double-compressor group.Therefore, system, in the time having single stage compress circulation and Two-stage Compression circulation to need, can be saved one-time investment, is convenient to refrigeration system energy-conservation simultaneously, has improved the utilization ratio of refrigeration system, and refrigeration system flexible adjustment, and the temperature fluctuation in refrigerating environment is little.
Brief description of the drawings
Fig. 1 is complete cooling cooling front throttle refrigeration system schematic diagram in the middle of the multi-joint throttling of a kind of twin-stage of the present invention;
Fig. 2 is complete cooling cooling rear throttle refrigeration system schematic diagram in the middle of the multi-joint throttling of a kind of twin-stage of the present invention.
In 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. 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.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Refrigeration system completely cooling in the middle of the multi-joint throttling of twin-stage of the present invention, according to the difference of throttle position, is divided into the middle cooling cooling rear throttle refrigeration system completely of the middle completely cooling cooling front throttle refrigeration system of the multi-joint throttling of twin-stage and the multi-joint throttling of twin-stage.
Embodiment 1
In the middle of the multi-joint throttling of a kind of twin-stage of the present invention, complete cooling cooling front throttle refrigeration system schematic diagram as shown in Figure 1, comprises 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 organizes double-compressor group more.Described in every group, 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 high pressure liquid feeding pipeline 3 side by side.Described the first evaporimeter is for high-temperature refrigeration environment, and described the second evaporimeter is for cryogenic refrigeration environment.Described in every group, the pipe side outlet of the intercooler 8 of double-compressor group is connected with described high pressure liquid feeding pipeline 3 respectively, described high pressure liquid feeding pipeline 3 other ends are connected 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 is connected with the second valve 5-2 import and the 3rd valve 5-3 import of double-compressor group described in every group respectively, and described the second suction line 2 is connected with the first valve 5-1 import of double-compressor group described in every group, after the outlet parallel connection of the outlet of described the first valve 5-1 and the second valve 5-2, be connected with the air entry of described the first compressor 4-1, the exhaust outlet of described the first compressor 4-1 is connected with the import of the 4th valve 5-4 and the import of the 5th valve 5-5 respectively, the outlet of described the 4th valve 5-4 is connected with the liquid level below shell-side inlet of described intercooler 8, after the shell-side gaseous phase outlet parallel connection of the outlet of described the 3rd valve 5-3 and described intercooler 8, be connected with the air entry of described the second compressor 4-2, after the outlet parallel connection of the exhaust outlet of described the second compressor 4-2 and described the 5th valve 5-5, be connected with the import of described condenser 6, outlet one tunnel of described condenser 6 is connected with the pipe side-entrance of described intercooler 8, described the 6th valve 5-6 of separately leading up to is connected with the shell-side inlet of described intercooler 8 with described the 3rd throttling arrangement 7-3.
In the middle of the multi-joint throttling of twin-stage of the present embodiment 1, in complete cooling cooling front throttle refrigeration system, any one double-compressor group all can be used as Two-stage Compression refrigeration unit and the use of single stage compress refrigeration unit, and does not interfere with each other between double-compressor group.
1, use as Two-stage Compression refrigeration unit:
In double-compressor group, the second valve 5-2, the 3rd valve 5-3 and the 5th valve 5-5 close, and the first valve 5-1, the 4th valve 5-4 and the 6th valve 5-6 open.High pressure refrigerant liquid in high pressure liquid feeding pipeline 3 enters after evaporation endothermic in the second suction line 2 after the second throttling arrangement 7-2 reducing pressure by regulating flow in the second evaporimeter 9-2, enter in the first compressor 4-1 and carry out first order compression through the first valve 5-1, middle compression refrigerant steam after the first compressor compresses enters intercooler 8 through the 4th valve 5-4 from intercooler 8 liquid level below shell-side inlet, with refrigerant liquid heat exchange in intercooler 8, the saturated refrigerant vapour of middle pressure after heat exchange enters in the second compressor 4-2 and carries out second level compression, high-pressure refrigerant vapor after the second compressor compresses is condensed into high pressure refrigerant liquid in condenser 6, from condenser 6, high pressure refrigerant liquid is out divided into two parts, a part enters heat exchange intercooler 8 from the shell-side inlet of intercooler 8 after throttling is middle compression refrigerant in the 3rd throttling arrangement 7-3 through the 6th valve 5-6, another part high pressure refrigerant liquid enters from intercooler 8 pipe side-entrances, after heat exchange, flow out to enter from intercooler 8 pipe side outlets and high pressure liquid feeding pipeline 3, complete Two-stage Compression kind of refrigeration cycle.
2, use as single stage compress refrigeration unit:
In double-compressor group, the second valve 5-2, the 3rd valve 5-3 and the 5th valve 5-5 open, and the first valve 5-1, the 4th valve 5-4 and the 6th valve 5-6 close.High pressure refrigerant liquid in high pressure liquid feeding pipeline 3 enters after evaporation endothermic in the first suction line 1 in the first evaporimeter 9-1 through first throttle device 7-1 reducing pressure by regulating flow, enter in the first compressor 4-1 and the second compressor 4-2 and compress through the second valve 5-2 and the 3rd valve 5-3 respectively, the high-pressure refrigerant vapor junction 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 enters condensation in condenser 6, and the intercooler 8 of then flowing through enters and in high-pressure liquid line 3, completes single stage compress kind of refrigeration cycle.
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 opens, the second compressor 4-2, condenser 6, first throttle device 7-1, intercooler and the first evaporimeter 9-1 can complete separately single stage compress kind of refrigeration cycle; When the second valve 5-2, the 3rd valve 5-3, the 4th valve 5-4 and the 6th valve 5-6 close, the 3rd valve 5-3 closes, when the first valve 5-1 and the 5th valve 5-5 open, the first compressor 4-1, condenser 6, first throttle device 7-1, intercooler and the first evaporimeter 9-1 can complete separately single stage compress kind of refrigeration cycle.
Embodiment 2
Fig. 2 is complete cooling cooling rear throttle refrigeration system schematic diagram in the middle of the multi-joint throttling of a kind of twin-stage of the present invention, comprises 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 organizes double-compressor group more.Described in every group, 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 high pressure liquid feeding pipeline 3 side by side.Described the first evaporimeter is for high-temperature refrigeration environment, and described the second evaporimeter is for cryogenic refrigeration environment.Described in every group, the pipe side outlet of the intercooler 8 of double-compressor group is connected with described high pressure liquid feeding pipeline 3 and the 6th valve 5-6 import respectively, described high pressure liquid feeding pipeline 3 other ends are connected 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, described the second evaporimeter 9-2 outlet is connected with described the second suction line 2.Described the first suction line 1 is connected with the second valve 5-2 import and the 3rd valve 5-3 import of double-compressor group described in every group respectively, and described the second suction line 2 is connected with the first valve 5-1 import of double-compressor group described in every group.After the outlet parallel connection of the outlet of described the first valve 5-1 and the second valve 5-2, be connected with the air entry of described the first compressor 4-1, the exhaust outlet of described the first compressor 4-1 is connected with the import of the 4th valve 5-4 and the import of the 5th valve 5-5 respectively, the outlet of described the 4th valve 5-4 is connected with the liquid level below shell-side inlet of described intercooler 8, after the shell-side gaseous phase outlet parallel connection of the outlet of described the 3rd valve 5-3 and described intercooler 8, be connected with the air entry of described the second compressor 4-2, after the outlet parallel connection of the exhaust outlet of described the second compressor 4-2 and described the 5th valve 5-5, be connected with the import of described condenser 6, the outlet of described condenser 6 is connected with the pipe side-entrance of described intercooler 8, 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 twin-stage of the present embodiment 2, in complete cooling cooling rear throttle refrigeration system, any one double-compressor group all can be used as Two-stage Compression refrigeration unit and the use of single stage compress refrigeration unit, and does not interfere with each other between double-compressor group.
1, use as Two-stage Compression refrigeration unit:
In double-compressor group, the second valve 5-2, the 3rd valve 5-3 and the 5th valve 5-5 close, and the first valve 5-1, the 4th valve 5-4 and the 6th valve 5-6 open.High pressure refrigerant liquid in high pressure liquid feeding pipeline 3 enters after evaporation endothermic in the second suction line 2 after the second throttling arrangement 7-2 reducing pressure by regulating flow in the second evaporimeter 9-2, enter in the first compressor 4-1 and carry out first order compression through the first valve 5-1, middle compression refrigerant steam after the first compressor compresses enters intercooler 8 through the 4th valve 5-4 from intercooler 8 liquid level below shell-side inlet, with refrigerant liquid heat exchange in intercooler 8, the saturated refrigerant vapour of middle pressure after heat exchange enters in the second compressor 4-2 and carries out second level compression, high-pressure refrigerant vapor after the second compressor compresses is condensed into high pressure refrigerant liquid in condenser 6, from condenser 6, high pressure refrigerant liquid out enters from intercooler 8 pipe side-entrances, heat exchange in intercooler 8, the cold-producing medium flowing out from intercooler 8 pipe side outlets is divided into two parts, a part enters heat exchange intercooler 8 from the shell-side inlet of intercooler 8 after throttling is middle compression refrigerant in the 3rd throttling arrangement 7-3 through the 6th valve 5-6, another part enters and in high pressure liquid feeding pipeline 3, completes Two-stage Compression kind of refrigeration cycle.
2, use as single stage compress refrigeration unit:
In double-compressor group, the second valve 5-2, the 3rd valve 5-3 and the 5th valve 5-5 open, and the first valve 5-1, the 4th valve 5-4 and the 6th valve 5-6 close.High pressure refrigerant liquid in high pressure liquid feeding pipeline 3 enters after evaporation endothermic in the first suction line 1 in the first evaporimeter 9-1 through first throttle device 7-1 reducing pressure by regulating flow, enter in the first compressor 4-1 and the second compressor 4-2 and compress through the second valve 5-2 and the 3rd valve 5-3 respectively, the high-pressure refrigerant vapor junction 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 enters condensation in condenser 6, and the intercooler 8 of then flowing through enters and in high-pressure liquid line 3, completes single stage compress kind of refrigeration cycle.
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 opens, the second compressor 4-2, condenser 6, first throttle device 7-1, intercooler and the first evaporimeter 9-1 can complete separately single stage compress kind of refrigeration cycle; When the second valve 5-2, the 3rd valve 5-3, the 4th valve 5-4 and the 6th valve 5-6 close, the 3rd valve 5-3 closes, when the first valve 5-1 and the 5th valve 5-5 open, the first compressor 4-1, condenser 6, first throttle device 7-1, intercooler and the first evaporimeter 9-1 can complete separately single stage compress kind of refrigeration cycle.
In above-described embodiment 1 and 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, throttle orifice plate apparatus, or other throttling arrangement.Described condenser is air-cooled condenser, water-cooled condenser or evaporative condenser, can be also 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 single stage compress circulation, can realize again Two-stage Compression circulation, and inner each compressor of double-compressor group all can use separately.Therefore, system, in the time having single stage compress and Two-stage Compression to need, can be saved one-time investment, is convenient to refrigeration system energy-conservation simultaneously, has improved the utilization ratio of refrigeration system, and refrigeration system flexible adjustment, and in refrigerating environment, temperature fluctuation is little.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles 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 (12)
1. complete cooling refrigeration system in the middle of the multi-joint throttling 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 double-compressor group more, described many group double-compressor groups are connected between the first suction line, the second suction line and high pressure liquid feeding pipeline side by side, described the first evaporimeter is for high-temperature refrigeration environment, and described the second evaporimeter is for cryogenic refrigeration environment, described in every group, 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, described in every group, the pipe side outlet of the intercooler of double-compressor group is connected with described high pressure liquid feeding pipeline respectively, the described high pressure liquid feeding pipeline other end is connected 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, described the first suction line is connected with the second valve inlet and the 3rd valve inlet of double-compressor group described in every group respectively, and described the second suction line is connected with the first valve inlet of double-compressor group described in every group, after the outlet parallel connection of the outlet of described the first valve and described the second valve, be connected with the air entry of described the first compressor, the exhaust outlet of described the first compressor is connected with the import of the 4th valve and the import of the 5th valve respectively, described the 4th outlet of valve and the liquid level of described intercooler below shell-side inlet are connected, after the shell-side gaseous phase outlet parallel connection of the outlet of described the 3rd valve and described intercooler, be connected with the air entry of described the second compressor, after the outlet parallel connection of the exhaust outlet of described the second compressor and described the 5th valve, be connected with the import of described condenser, outlet one tunnel of described condenser is connected with the pipe side-entrance of described intercooler, described the 6th valve of separately leading up to is connected with the shell-side inlet of described intercooler with described the 3rd throttling arrangement.
2. complete cooling refrigeration system 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, throttle orifice plate apparatus.
3. complete cooling refrigeration system 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 or water-cooled condenser.
4. complete cooling refrigeration system in the middle of the multi-joint throttling of twin-stage according to claim 1, is characterized in that, described condenser is evaporative condenser.
5. complete cooling refrigeration system in the middle of the multi-joint throttling of twin-stage according to claim 1, 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 or motor-driven valve.
6. complete cooling refrigeration system in the middle of the multi-joint throttling of twin-stage according to claim 1, is characterized in that, described the first valve, the second valve, the 3rd valve, the 4th valve, the 5th valve, the 6th valve are triple valve or cross valve.
7. complete cooling refrigeration system in the middle of the multi-joint throttling 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 double-compressor group more; Described in every group, 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 high pressure liquid feeding pipeline side by side; Described the first evaporimeter is for high-temperature refrigeration environment, and described the second evaporimeter is for cryogenic refrigeration environment.Described in every group, the pipe side outlet of the intercooler of double-compressor group is connected with described high pressure liquid feeding pipeline and the 6th valve inlet respectively, the described high pressure liquid feeding pipeline other end is connected 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, described the first suction line is connected with the second valve inlet and the 3rd valve inlet of double-compressor group described in every group respectively, and described the second suction line is connected with the first valve inlet of double-compressor group described in every group, after the outlet parallel connection of the outlet of described the first valve and described the second valve, be connected with the air entry of described the first compressor, the exhaust outlet of described the first compressor is connected with the import of the 4th valve and the import of the 5th valve respectively, described the 4th outlet of valve and the liquid level of described intercooler below shell-side inlet are connected, after the shell-side gaseous phase outlet parallel connection of the outlet of described the 3rd valve and described intercooler, be connected with the air entry of described the second compressor, after the outlet parallel connection of the exhaust outlet of described the second compressor and described the 5th valve, be connected with the import of described condenser, the outlet of described condenser is connected with the pipe side-entrance of described intercooler, the shell-side inlet of described intercooler is connected with described the 6th valve through described the 3rd throttling arrangement.
8. complete cooling refrigeration system in the middle of the multi-joint throttling of twin-stage according to claim 7, 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, throttle orifice plate apparatus.
9. complete cooling refrigeration system in the middle of the multi-joint throttling of twin-stage according to claim 7, is characterized in that, described condenser is air-cooled condenser or water-cooled condenser.
10. complete cooling refrigeration system in the middle of the multi-joint throttling of twin-stage according to claim 7, is characterized in that, described condenser is evaporative condenser.
Complete cooling refrigeration system in the middle of the multi-joint throttling of 11. twin-stages according to claim 7, 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.
Complete cooling refrigeration system in the middle of the multi-joint throttling of 12. twin-stages according to claim 7, is characterized in that, described the first valve, the second valve, the 3rd valve, the 4th valve, the 5th valve, the 6th valve are triple valve or cross valve.
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| US11867466B2 (en) | 2018-11-12 | 2024-01-09 | Carrier Corporation | Compact heat exchanger assembly for a refrigeration system |
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| CN103335438B (en) * | 2013-07-04 | 2015-04-01 | 天津商业大学 | One-stage throttling incomplete-inter-cooling variable-flow twin-stage compression refrigerating system |
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| US6638029B2 (en) * | 2001-12-19 | 2003-10-28 | Hamilton Sunstrand Corporation | Pressure ratio modulation for a two stage oil free compressor assembly |
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| CN201463395U (en) * | 2009-07-30 | 2010-05-12 | 天津商业大学 | Two-stage compressed air source heat pump system with air supplement function |
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