CN113587467A - Multi-machine-head single-return-stroke segmented compression type water chilling unit - Google Patents

Multi-machine-head single-return-stroke segmented compression type water chilling unit Download PDF

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Publication number
CN113587467A
CN113587467A CN202110862243.6A CN202110862243A CN113587467A CN 113587467 A CN113587467 A CN 113587467A CN 202110862243 A CN202110862243 A CN 202110862243A CN 113587467 A CN113587467 A CN 113587467A
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China
Prior art keywords
condenser
segmented
segmentation
evaporator
combined
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Pending
Application number
CN202110862243.6A
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Chinese (zh)
Inventor
蒋家祺
薛中柱
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Jiangsu Quyu Energy Co ltd
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Jiangsu Quyu Energy Co ltd
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Priority to CN202110862243.6A priority Critical patent/CN113587467A/en
Publication of CN113587467A publication Critical patent/CN113587467A/en
Priority to US17/789,521 priority patent/US20230324083A1/en
Priority to EP22732374.8A priority patent/EP4148347A4/en
Priority to PCT/CN2022/070417 priority patent/WO2023005155A1/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B1/00—Compression machines, plants or systems with non-reversible cycle
    • F25B1/10—Compression machines, plants or systems with non-reversible cycle with multi-stage compression
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B1/00—Compression machines, plants or systems with non-reversible cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
    • F25B25/005—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00 using primary and secondary systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B31/00—Compressor arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B31/00—Compressor arrangements
    • F25B31/02—Compressor arrangements of motor-compressor units
    • F25B31/026—Compressor arrangements of motor-compressor units with compressor of rotary type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • F25B39/02—Evaporators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • F25B39/04—Condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2339/00—Details of evaporators; Details of condensers
    • F25B2339/02—Details of evaporators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2339/00—Details of evaporators; Details of condensers
    • F25B2339/02—Details of evaporators
    • F25B2339/024—Evaporators with refrigerant in a vessel in which is situated a heat exchanger
    • F25B2339/0242—Evaporators with refrigerant in a vessel in which is situated a heat exchanger having tubular elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2339/00—Details of evaporators; Details of condensers
    • F25B2339/04—Details of condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2339/00—Details of evaporators; Details of condensers
    • F25B2339/04—Details of condensers
    • F25B2339/047—Water-cooled condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/06—Several compression cycles arranged in parallel

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Conditioning Control Device (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

The invention discloses a multi-machine-head single-return-stroke segmented compression type water chilling unit which comprises a combined condenser and a combined evaporator, wherein the combined condenser is formed by sequentially connecting and combining a plurality of segmented condensers, a condenser tube bundle is arranged in the combined condenser and is used for all the segmented condensers, the combined evaporator is formed by sequentially connecting and combining a plurality of segmented evaporators, an evaporator tube bundle is arranged in the combined evaporator and is used for all the segmented evaporators, the segmented condensers and the segmented evaporators correspond to each other one by one, a compressor is connected between the segmented condensers and the segmented evaporators which correspond to each other, and the compressor, the segmented condensers and the segmented evaporators form a refrigeration function section. According to the invention, both the refrigerating capacity and the chilled water flow can be independently controlled according to actual requirements, and the problem that the refrigerating capacity and the chilled water flow of the existing water chilling unit are difficult to match is solved, so that the good use effect of the water chilling unit is ensured.

Description

Multi-machine-head single-return-stroke segmented compression type water chilling unit
Technical Field
The invention relates to the technical field of water chilling units, in particular to a multi-machine-head single-return-stroke segmented compression type water chilling unit.
Background
The existing water chilling units all use refrigerating capacity as a primary parameter, then determine rated chilled water flow by rated supply and return water temperature, the refrigerating capacity and the chilled water flow are in a relatively fixed relation, and the chilled water flow is not determined according to the flow required by the tail end of a project. The cold water set is in operation, the condition that cold volume and chilled water flow are inconsistent often appears, specifically, under a certain load condition, the cold volume of a single cold machine can meet the requirement of the cold volume at the tail end, but the flow provided by the cold machine cannot meet the requirement of the flow at the tail end. Because chilled water is the carrier of cold, insufficient chilled water flow means that there is no cold in certain areas, and there is no comfort effect. In this case, if the operation of the cooling machine is increased, because a single cooling machine can meet the cooling capacity requirement, the cooling machine is increased, each cooling machine is in a low-efficiency low-load condition, and the operation efficiency is low; if the cold machine is not added, the output of the water pump is generally increased, the cold machine can provide chilled water with the flow rate larger than the rated flow rate by using larger lift loss, but the flow rate of the chilled water in the cold machine is too high by the operation, and the running efficiency is also reduced. Therefore, in most of the operation time, the flow rate of the chilled water of the refrigerator is in a condition of not matching with the cooling capacity, so that the efficiency of the refrigerator is always in a low state.
A new technical solution is needed to solve this problem.
Disclosure of Invention
The purpose of the invention is as follows: in order to solve the problem that the refrigerating water flow and the refrigerating capacity of a refrigerator are difficult to match in the prior art, the multi-handpiece single-return-stroke segmented compression type water chilling unit is provided, the independent matching combination of the refrigerating capacity and the refrigerating water flow can be realized, the use requirements of the refrigerating capacity and the refrigerating water flow are met, and the use effect of the water chilling unit is improved.
The technical scheme is as follows: in order to achieve the purpose, the invention provides a multi-machine-head single-return-stroke segmented compression type water chilling unit which comprises a combined condenser and a combined evaporator, wherein the combined condenser is formed by sequentially connecting and combining a plurality of segmented condensers, a condenser tube bundle is arranged in the combined condenser and is used for all the segmented condensers, the combined evaporator is formed by sequentially connecting and combining a plurality of segmented evaporators, an evaporator tube bundle is arranged in the combined evaporator and is used for all the segmented evaporators, the segmented condensers and the segmented evaporators correspond to each other one by one, a compressor is connected between the segmented condensers and the segmented evaporators which correspond to each other, and the compressor, the segmented condensers and the segmented evaporators form a refrigeration function section.
Furthermore, the refrigeration function section also comprises a throttling device, the throttling device is respectively connected with the sectional condenser and the sectional evaporator, and the throttling device is a pressure reducing device of the water chilling unit between the condenser and the evaporator.
Further, the both ends of combination formula condenser are condenser entry and condenser export respectively, the both ends of combination formula evaporimeter are evaporimeter entry and evaporimeter export respectively, condenser export and evaporimeter entry lie in same one side, make cooling water in the condenser and the refrigerated water in the evaporimeter can the convection current operation like this, have improved the operating efficiency.
Furthermore, the compressor selects a centrifugal compressor, a magnetic suspension compressor or a screw compressor for combined use, and specific combination can be selected in a targeted manner according to the requirement of the refrigeration working condition, so that the overall power of the compressor meets the refrigeration requirement, and the refrigeration effect is ensured.
The design principle of the invention is as follows: all design into segmental structure with condenser overall structure and evaporimeter overall structure, and through compressor and throttling arrangement's setting, form a plurality of refrigeration function sections that can independent operation, can be according to the refrigerating output demand, the operation quantity of refrigeration function section is selected in the correspondence, thereby under the condition that provides corresponding refrigerating output, each compressor of having ensured to participate in the operation is in high-efficient running state, meanwhile, because a condenser tube bank is shared to all sectionalized condensers, an evaporimeter tube bank is shared to all sectionalized evaporimeters, so mutually independent relation has been realized to refrigerating output and refrigerated water flow, can be according to actual refrigerated water flow demand, select suitable evaporimeter tube bank and condenser tube bank, no matter the operation quantity and the situation of refrigeration function section, can provide the refrigerated water flow of capacity all the time.
According to the load demand and equipment parameters of the project terminal system, the invention calculates and determines the appropriate chilled water flow, so that the refrigeration pump can keep the sufficient chilled water flow at the terminal with lower energy consumption, and the chilled water as a cold carrier can be continuously and fully distributed in all regions at the project terminal.
The invention designs and selects the power or the form (such as a centrifugal compressor, a magnetic suspension compressor or a screw compressor) of the compressor for combined use according to the conditions of the design cold load, the function state (such as the function state of hospitals, markets, office buildings and the like), the climate area (such as cold areas, summer hot winter warm areas and the like) and the like of the project.
Has the advantages that: compared with the prior art, the invention has the following advantages:
1. refrigeration capacity and refrigerated water flow homoenergetic can carry out independent control according to the actual demand, have solved the problem that refrigeration capacity and refrigerated water flow that current cooling water set exists are difficult to realize the matching to guarantee cooling water set's result of use, promoted and used the travelling comfort.
2. The running number of the refrigeration function sections can be selected according to the actual demand of the refrigeration capacity, and each compressor participating in running is in a high-efficiency running state under the condition of ensuring to provide the required refrigeration capacity, so that the running efficiency of the water chilling unit is improved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
The present invention is further illustrated by the following figures and specific examples, which are to be understood as illustrative only and not as limiting the scope of the invention, which is to be given the full breadth of the appended claims and any and all equivalent modifications thereof which may occur to those skilled in the art upon reading the present specification.
Example 1:
as shown in fig. 1, this embodiment provides a multi-machine-head single-return-stroke sectional compression type water chilling unit, which includes a combined condenser 7 and a combined evaporator 8, the combined condenser 7 is formed by sequentially connecting and combining four sectional condensers, two ends of the combined condenser 7 are respectively a condenser inlet 51 and a condenser outlet 52, the four sectional condensers are respectively a first sectional condenser 11, a second sectional condenser 21, a third sectional condenser 31 and a fourth sectional condenser 41 from the condenser inlet 51 to the condenser outlet 52, a condenser tube bundle 1 is arranged in the combined condenser 7 for the four sectional condensers to use, the combined evaporator 8 is formed by sequentially connecting and combining four sectional evaporators, two ends of the combined evaporator 8 are respectively an evaporator inlet 61 and an evaporator outlet 62, the four sectional evaporators are respectively a first sectional evaporator 21, a second sectional evaporator 62 from the evaporator outlet 62 to the evaporator inlet 61, The second sectional evaporator 22, the third sectional evaporator 23 and the fourth sectional evaporator 24, the evaporator tube bundle 2 is arranged in the combined evaporator 8 for being used by the four sectional evaporators together, and the condenser outlet 52 and the evaporator inlet 61 are positioned on the same side.
In the embodiment, a first compressor 31 and a first throttling device 41 are respectively connected between the first sectional condenser 11 and the first sectional evaporator 21 through pipelines, so that a first refrigeration functional section is formed; a second compressor 32 and a second throttling device 42 are respectively connected between the second sectional condenser 21 and the second sectional evaporator 22 through pipelines, so that a second refrigeration functional section is formed; a third compressor 33 and a third throttling device 43 are respectively connected between the third sectional condenser 31 and the third sectional evaporator 23 through pipelines, so that a third refrigeration functional section is formed; a fourth compressor 34 and a fourth throttling device 44 are respectively connected between the fourth sectional condenser 41 and the fourth sectional evaporator 24 through pipelines, so that a fourth refrigeration functional section is formed.
In the embodiment, the first compressor 31, the second compressor 32, the third compressor 33 and the fourth compressor 34 are respectively a magnetic suspension compressor, a centrifugal compressor and a centrifugal compressor, the magnetic suspension compressor or the centrifugal compressor can be started according to actual conditions, and when the cold load is low and the environmental conditions are favorable for the efficient operation of the magnetic suspension compressor, the magnetic suspension compressor is preferentially started to operate through an automatic control system of the cold machine; when the cold load is high and the environment condition is favorable for the efficient operation of the centrifugal compressor, the centrifugal compressor is preferentially started to operate through the automatic control system of the cold machine.
Therefore, the whole power of the compressor can be matched with the cooling load under the condition of different cooling loads, so that the refrigerating capacity can be controlled more accurately.
Example 2:
in this embodiment, the water chilling unit provided in embodiment 1 is applied as an example, and first, according to an actual flow demand of chilled water, lengths of the condenser tube bundle 1 and the evaporator tube bundle 2 in the water chilling unit in embodiment 1, that is, the number of the cooling function sections is determined, and in this embodiment, four cooling function sections are selected.
The cold water set possesses the following condition according to the requirement of terminal cold volume in the operation process:
case 1: when the cooling load is not more than 25% of the rated cooling capacity of the water chilling unit, only the first cooling function section (or one of the other three cooling function sections) is selected to be operated, cooling water enters the condenser tube bundle 1 from the condenser inlet 51 and flows out from the condenser outlet 52, and then the chilled water enters the evaporator tube bundle 2 from the evaporator inlet 61 and flows out from the evaporator outlet 62.
First refrigeration function section is at the in-process of operation, and first compressor 31 is in high-efficient running state, and the operation of first refrigeration function section produces and corresponds cold volume, satisfies terminal refrigerating output demand, and the refrigerated water flow that produces in the evaporator tube bank 2 in addition also can satisfy terminal demand.
Case 2: when the cold load is more than 25% of the rated refrigerating capacity of the water chilling unit and is not more than 50%, the first refrigerating function section and the second refrigerating function section (two of the four refrigerating function sections) are selected to operate, the operation process of cooling water and chilled water is the same as the condition 1, the first refrigerating function section and the second refrigerating function section operate simultaneously to generate corresponding cold, the requirement of the tail end refrigerating capacity is met, and in addition, the flow of the chilled water generated in the evaporator tube bundle 2 can also meet the requirement of the tail end.
Case 3: when the cold load is more than 50% of the rated refrigerating capacity of the water chilling unit and is not more than 75%, 3 of the four refrigerating function sections are operated to generate corresponding refrigerating capacity to meet the requirement of the tail end refrigerating capacity, and in addition, the flow of the chilled water generated in the evaporator tube bundle 2 can also meet the requirement of the tail end.
Case 4: when the cold load is greater than 75% of the rated refrigerating capacity of the water chilling unit, the four refrigerating function sections are operated simultaneously to generate corresponding refrigerating capacity, the requirement of the tail end refrigerating capacity is met, and in addition, the flow of the chilled water generated in the evaporator tube bundle 2 can also meet the requirement of the tail end.
According to the multi-machine-head single-return-stroke segmented compression type water chilling unit, the requirement on the refrigerating capacity during change can be met and adapted, sufficient refrigerating water flow can be kept to be provided, the good and stable use effect of the water chilling unit is ensured, and the good user experience effect is ensured.

Claims (4)

1. The utility model provides a multimachine head single return stroke segmentation compression cooling water set, its characterized in that, includes combination formula condenser and combination formula evaporimeter, combination formula condenser connects gradually the combination by a plurality of segmentation condensers and forms, be provided with condenser tube bank in the combination formula condenser and be used for supplying all segmentation condensers to use, combination formula evaporimeter connects gradually the combination by a plurality of segmentation evaporimeters and forms, be provided with the evaporimeter tube bank in the combination formula evaporimeter and be used for supplying all segmentation evaporimeters to use, segmentation condenser and segmentation evaporimeter one-to-one are connected between the segmentation condenser that corresponds each other and the segmentation evaporimeter and are provided with the compressor, and compressor, segmentation condenser and segmentation evaporimeter form the refrigeration function section.
2. The multi-handpiece single-return-stroke segmented compression chiller according to claim 1, wherein the refrigeration function section further comprises a throttling device, and the throttling device is respectively connected with the segmented condenser and the segmented evaporator.
3. The multi-handpiece single-return-stroke segmented compression chiller according to claim 1, wherein the combined condenser has a condenser inlet and a condenser outlet at each end, the combined evaporator has an evaporator inlet and an evaporator outlet at each end, and the condenser outlet and the evaporator inlet are located on the same side.
4. The multi-handpiece single-return-stroke segmented compression chiller according to claim 1, wherein the compressors are selected from centrifugal compressors, magnetic levitation compressors or screw compressors for combined use.
CN202110862243.6A 2021-07-29 2021-07-29 Multi-machine-head single-return-stroke segmented compression type water chilling unit Pending CN113587467A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN202110862243.6A CN113587467A (en) 2021-07-29 2021-07-29 Multi-machine-head single-return-stroke segmented compression type water chilling unit
US17/789,521 US20230324083A1 (en) 2021-07-29 2022-01-06 Multi-head single-pass sectional compression water chilling device
EP22732374.8A EP4148347A4 (en) 2021-07-29 2022-01-06 Multi-compressor one-pass segmented compression type water chiller
PCT/CN2022/070417 WO2023005155A1 (en) 2021-07-29 2022-01-06 Multi-compressor one-pass segmented compression type water chiller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110862243.6A CN113587467A (en) 2021-07-29 2021-07-29 Multi-machine-head single-return-stroke segmented compression type water chilling unit

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CN113587467A true CN113587467A (en) 2021-11-02

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US (1) US20230324083A1 (en)
EP (1) EP4148347A4 (en)
CN (1) CN113587467A (en)
WO (1) WO2023005155A1 (en)

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CN114370721A (en) * 2022-02-28 2022-04-19 远大空调有限公司 Combined centrifugal cold water/heat pump unit and control method thereof
WO2023005155A1 (en) * 2021-07-29 2023-02-02 江苏区宇能源有限公司 Multi-compressor one-pass segmented compression type water chiller

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CN106440435A (en) * 2016-10-27 2017-02-22 南京天加空调设备有限公司 Double-machine-head water chilling unit used for rail transit industry
CN108489132A (en) * 2018-05-23 2018-09-04 江苏区宇能源有限公司 The efficiently especially big cold series connection handpiece Water Chilling Units of energy source station
CN112503788A (en) * 2020-11-30 2021-03-16 珠海格力电器股份有限公司 Multi-refrigerant loop refrigerating system and air conditioning equipment

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WO2023005155A1 (en) * 2021-07-29 2023-02-02 江苏区宇能源有限公司 Multi-compressor one-pass segmented compression type water chiller
CN114370721A (en) * 2022-02-28 2022-04-19 远大空调有限公司 Combined centrifugal cold water/heat pump unit and control method thereof

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EP4148347A4 (en) 2024-03-13
US20230324083A1 (en) 2023-10-12

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