CN212987691U - Distributed multi-connected refrigeration house refrigerating system - Google Patents
Distributed multi-connected refrigeration house refrigerating system Download PDFInfo
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- CN212987691U CN212987691U CN202020319980.2U CN202020319980U CN212987691U CN 212987691 U CN212987691 U CN 212987691U CN 202020319980 U CN202020319980 U CN 202020319980U CN 212987691 U CN212987691 U CN 212987691U
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- cooling medium
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 55
- 230000006835 compression Effects 0.000 claims abstract description 47
- 238000007906 compression Methods 0.000 claims abstract description 47
- 239000002826 coolant Substances 0.000 claims abstract description 38
- 239000007788 liquid Substances 0.000 claims abstract description 22
- 238000003860 storage Methods 0.000 claims abstract description 21
- 239000003507 refrigerant Substances 0.000 claims abstract description 12
- 238000001816 cooling Methods 0.000 claims description 23
- 239000000498 cooling water Substances 0.000 claims description 10
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims description 3
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims 1
- 239000011780 sodium chloride Substances 0.000 claims 1
- 238000010257 thawing Methods 0.000 description 13
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- 238000009833 condensation Methods 0.000 description 6
- 230000005494 condensation Effects 0.000 description 6
- 238000000605 extraction Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 235000021393 food security Nutrition 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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Abstract
The utility model relates to a scattered multiple cold storage refrigerating system, including outdoor coolant circulating system and a plurality of indoor multiple cold storage systems that are connected with coolant circulating system, every multiple cold storage system includes the compression condensing unit and installs and be no less than two air-cooler modules in same cold room, and every air-cooler module passes through the high-pressure liquid pipe and the low pressure gas pipe of refrigerant and links to each other with the compression condensing unit, and the compression condensing unit of every cold room is connected with coolant circulating system. The utility model discloses a one or several compression condensing units pass through refrigerant liquid connecting pipe and gas connecting pipe and several difference or the same type, the air-cooler of capacity links to each other, constitute single refrigeration cycle system, its system layout is nimble, ground, furred ceiling, goods shelves or other idle spaces in the cold room can be arranged in to the compression condensing unit, through the different operational mode of many air-coolers, realize independent nimble control to the temperature and the humidity of cold room to improve refrigerating system's refrigeration efficiency.
Description
Technical Field
The utility model relates to a refrigeration field especially relates to a distributed multi-connected type freezer refrigerating system.
Background
In a large-scale cold storage, a large-scale centralized ammonia refrigeration system or a refrigeration device is usually adopted, and the refrigeration system usually adopts an ammonia pump liquid supply system, so that the refrigerant filling amount is large; and the middle and small-sized cold storages mostly adopt one set or more sets of one-to-one Freon direct expansion type refrigerating systems arranged in one cold storage room, the systems are mainly applied to the assembled cold storages, and the refrigerant filling amount of the system is less compared with that of a large centralized refrigerating system.
For a large centralized refrigeration system, a special machine room needs to be arranged, so that the building area is increased, the system pipeline is long, the resistance is large, the energy efficiency ratio is low during low-load unloading operation, the regulation and control difficulty is high, once a fault occurs, the whole system cannot normally operate, in addition, the temperature of the warehouse of the system adopting one set of refrigeration cycle is greatly increased in the defrosting process, and the quality management of food is seriously influenced. And a plurality of sets of Freon direct expansion type distributed systems which are one-to-one are adopted in one refrigeration house or one cold room, the total installed capacity is large, the investment is high, the refrigeration system is mainly controlled by starting and stopping, and only some equipment can be stopped when part of the load runs, so that the equipment idle rate of the whole refrigeration house system is high, the refrigeration energy efficiency ratio is low, the system is difficult to be intensively regulated and controlled, and the humidity control in the cold room is difficult to obtain good precision.
In order to improve freezer refrigerating system's refrigeration energy efficiency ratio, reduce the area of refrigeration computer lab, utility model patent CN208595743U has proposed "a sharing freezer system based on parallel unit" technical scheme, and its system includes: the refrigerator comprises a refrigerator group, a compression condensing unit and a water cooling system, wherein the refrigerator group is arranged in a room in a centralized manner and consists of a plurality of independent cabinets; each cabinet body of the cold cabinet set is internally provided with an evaporator, and the whole system shares a condenser and a cooling tower. The condenser sharing of this scheme can improve refrigerating system energy efficiency ratio, but it sets up an independent evaporimeter in every freezer group that is equivalent to the freezer, and indoor temperature humidity control coupling can not adjust the interior humidity of cabinet, and when freezer group defrosting operation simultaneously, can not avoid the problem of rising back of the freezer in the cabinet, still is difficult to guarantee the storage quality of the interior food of cabinet.
In order to solve the problems, the utility model provides a technical scheme of a distributed multi-connected refrigeration house refrigeration system based on the prior art, and the system is provided with a cooling and heat extraction system in a centralized way and a compression and condensation unit in a distributed way to supply cold for different cold rooms; each compression condensing unit is responsible for refrigeration of one cold room, a plurality of air cooler modules are arranged in one cold room, and the accurate control of the temperature and the humidity in the cold room is realized through the combination of the operation modes of the air cooler modules. The scheme can not only reduce the occupied area of equipment and improve the system energy efficiency, but also improve the refrigeration quality of food.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a scattered multiple-unit type freezer refrigerating system sets up the cooling heat extraction system through concentrating, and the dispersion sets up compression condensation unit, can reduce refrigeration plant's installation area, can share the condenser again, and efficiency when improving system part load operation can also install many air-cooler modules in same cold shop, and defrosting, shut down in turn, operation reduce the temperature fluctuation in the cold shop when defrosting, guarantee cold-stored freezing quality and safety.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
a distributed multi-connected refrigeration house refrigerating system comprises an outdoor cooling medium circulating system and a plurality of indoor multi-connected refrigeration house systems connected with the cooling medium circulating system, wherein the cooling medium circulating system comprises a plurality of cooling medium circulating units, each cooling medium circulating unit consists of a cooling tower, a cooling water pump and a compression condensing unit pump, cooling media of the compression condensing unit are sent into a cooling medium heat exchange tube in the cooling tower through the compression condensing unit pump to be cooled and then return to the compression condensing unit, and the cooling water pump sprays cooling water at the bottom of the cooling tower onto the cooling medium heat exchange tube in the cooling tower; the multi-connected refrigeration house system comprises a compression condensing unit, at least two air cooler modules, corresponding pipelines and auxiliary components, wherein the at least two air cooler modules are arranged in the same cold room, and each air cooler module is connected with the compression condensing unit in the corresponding cold room.
Furthermore, the compression condensing unit comprises a compressor, an oil separator, an oil return pressure reducing device, a water-cooled condenser and a gas-liquid separator, wherein an exhaust port of the compressor is connected with an input end of the oil separator, and an air suction port of the compressor is connected with an output end of the gas-liquid separator; the oil return pressure reducing device at the bottom of the oil separator is connected with the input end of the gas-liquid separator through an oil return branch; one end of the water-cooled condenser is connected with the output end of the oil separator, and the other end of the water-cooled condenser is connected with the input end of the air cooler module through a refrigerant liquid connecting pipe; the input end of the gas-liquid separator is connected with the output end of the air cooler module through a refrigerant gas connecting pipe.
Further, the air-cooler module includes throttle subassembly, evaporimeter and fan, evaporimeter one end is continuous with water-cooled condenser output through throttle subassembly, and the other end links to each other with vapour and liquid separator's input.
Further, the throttling component is one of an electronic expansion valve, a thermal expansion valve or a capillary tube or a combination of the electronic expansion valve, the thermal expansion valve and the capillary tube.
Further, the compressor is an adjustable gas transmission amount compressor or a combined unit of the adjustable gas transmission amount compressor and a fixed-speed compressor.
Further, the cooling medium flowing through the compression condensing unit and the compression condensing unit pump is a fluid medium such as glycol solution and brine which is not frozen in a low-temperature environment.
Compared with the prior art, the utility model discloses a dispersion multiple connection formula freezer refrigerating system, beneficial effect is as follows:
1. the utility model is provided with the cooling heat extraction system in a centralized way, and the compression condensing units are arranged in a dispersed way, so that a special machine room is not needed, and the compression condensing units can be arranged on the ground, the suspended ceiling or the goods shelf in a cold room, thereby reducing the installation area of the refrigeration equipment;
2. the utility model arranges a plurality of air cooler modules on a compression condensing unit, and can realize the condenser sharing of the whole refrigerating system when one part of the air cooler modules stop operating, thereby improving the refrigerating efficiency when the system operates under the partial load working condition; when less goods are stored in the cold room, only a small number of air cooler modules need to be operated, so that the energy efficiency ratio of the whole refrigeration house refrigeration system is improved;
3. the utility model discloses an install many air-cooler modules in same cold shop, defrosting in turn, shut down, operation, the temperature fluctuation in the cold shop when reducing the defrosting, solve the problem that the storehouse temperature rises again in the defrosting process, guarantee cold-stored refrigeration quality and safety, realized the temperature and humidity control in the cold shop;
4. the utility model discloses with centralized system decentralization, miniaturization, reduce the loss that freezer refrigerating system local fault leads to whole freezer system to stop the fortune to bring, to the influence problem of food quality when having reduced cold machine trouble, improve the reliability and the food security of system.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention, and, with reference to the drawings, will be best understood by reference to the following drawings:
fig. 1 is a schematic structural view of a distributed multi-connected refrigeration storage refrigeration system according to an embodiment of the present invention;
in the figure: 1. the cooling medium circulating system comprises a cooling medium circulating system, 2, a multi-connected refrigeration house system, 3, a compression condensing unit, 301, a compressor, 302, an oil separator, 303, an oil return pressure reducing device, 304, a water-cooled condenser, 305, a gas-liquid separator, 4, an air cooler module, 401, a throttling assembly, 402, an evaporator, 403, a fan, 5, a cooling medium circulating unit, 501, a cooling tower, 502, a cooling water pump, 503, a compression condensing unit pump, 504 and a cooling medium heat exchange pipe.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and embodiments.
As shown in fig. 1, the distributed multi-connected type refrigeration storage refrigeration system of the present invention includes a cooling medium circulation system 1 disposed outdoors and a plurality of multi-connected type refrigeration storage refrigeration systems 2 connected to the cooling medium circulation system 1, wherein the cooling medium circulation system 1 includes a plurality of cooling medium circulation units 5, and each cooling medium circulation unit 5 includes a cooling tower 501, a cooling water pump 502 and a compression condenser unit pump 503; the cooling medium of the compression condensing unit 3 is sent to the cooling medium heat exchange pipe 504 in the cooling tower 501 through the compression condensing unit pump 503 to be cooled and then returns to the compression condensing unit 3, and the cooling water pump 502 sprays the cooling water at the bottom of the cooling tower onto the cooling medium heat exchange pipe 504 in the cooling tower 501; the multi-connected refrigeration house refrigerating system 2 comprises a compression condensing unit 3, at least two air cooler modules 4 arranged in the same cold room, corresponding pipelines and auxiliary components; and each air cooler module 4 is connected with the compression condensing unit 3 in the corresponding cold room. When the cold storage has a plurality of cold rooms, each cold room can be provided with one or more sets of multi-connected cold storage refrigerating systems 2, and the condensation heat of the refrigerating systems can be discharged by adopting the cooling medium circulating system 1 which is intensively arranged outdoors.
The compression condensing unit 3 comprises a compressor 301, an oil separator 302, an oil return pressure reducing device 303, a water-cooled condenser 304 and a gas-liquid separator 305, wherein an exhaust port of the compressor 301 is connected with an input end of the oil separator 302, and an air suction port of the compressor 301 is connected with an output end of the gas-liquid separator 305; the oil return pressure reducing device 303 at the bottom of the oil separator 302 is connected with the input end of the gas-liquid separator 305 through an oil return branch; one end of the water-cooled condenser 304 is connected with the output end of the oil separator 302, and the other end is connected with the input end of the air cooler module 4 through a refrigerant liquid connecting pipe; the input end of the gas-liquid separator 305 is connected with the output end of the air cooler module 4 through a refrigerant gas connection pipe. The compression condensing unit 3 can be flexibly arranged on the ground, a suspended ceiling or a goods shelf in a cold room, so that the length of a refrigerant connecting pipe is shortened, and the installation space of the refrigerating equipment is greatly reduced.
Set up one set or more set of multiple cold storage refrigerating system 2 in same cold room, every set of multiple cold storage refrigerating system 2 has two and more than two air-cooler module 4, air-cooler module 4 includes throttle subassembly 401, evaporimeter 402 and fan 403, evaporimeter 402 one end is continuous with water cooled condenser 304 output through throttle subassembly 401, and the other end links to each other with vapour and liquid separator 305's input. A plurality of air-cooler modules 4 can all refrigerate or the operation of part refrigeration, and when some air-cooler modules 4 need the defrosting, other air-cooler modules 4 still refrigerate the operation, through air-cooler module 4's alternative defrosting, shut down, operation in a cold room to realize the defrosting of cold air-cooler module 4 in the cold room, and realize the control of temperature and humidity in the cold room.
The heat removal device of the water-cooled condenser 304 may be a closed cooling tower, an open cooling tower, a soil source heat exchanger, etc., the cooling medium flowing through the compression and condensation unit 3, the compression and condensation unit pump 503, and the cooling medium heat exchange tube 504 in the cooling tower 501 may be various fluid media such as water, glycol solution, phase change coolant, etc., and when the cold room temperature is higher than 0 ℃, water may also be used as the cooling medium.
The circulating working medium of the multi-connected refrigeration storage system 2 comprises various refrigerants; the refrigeration cycle can be a single-stage compression refrigeration cycle or any other vapor compression type cycle capable of realizing the refrigeration function; and the components required for the cycle may be modified or replaced for different refrigeration cycles.
The pipelines and auxiliary components in the cold room in the cooling medium circulating system 1 and the necessary pipelines and auxiliary components of the multi-connected refrigeration house refrigerating system need to be externally provided with insulating layers to prevent heat from leaking into the cold room.
The utility model discloses in being applied to the freezer with the miniaturization of multiple refrigeration system, concentrate and set up the cooling heat extraction system, the dispersion sets up compression condensation unit, has effectively avoided large-scale centralized system, and area is big, and the pipeline is long, the resistance is big, and the low scheduling problem of efficiency when the low-load uninstallation moves.
The utility model arranges a plurality of air cooler modules on a compression condensing unit, and can realize the condenser sharing of the whole refrigerating system when one part of the air cooler modules stop operating, thereby improving the refrigerating efficiency when the system operates under the partial load working condition; when less goods are stored in the cold room, only a small number of air cooler modules need to be operated, so that the energy efficiency ratio of the whole refrigeration house refrigeration system is improved; and simultaneously, the utility model discloses many air-cooler modules of accessible installation in same cold room, through the alternative defrosting, shut down, the operation of many air-cooler modules to temperature fluctuation in the cold room when reducing the defrosting solves the problem that the defrosting in-process storehouse temperature rises again, guarantees cold-stored freezing quality and safety. In addition, due to the dispersive characteristic of the multi-connected system, the condition that the whole system cannot operate due to local faults is avoided, and the refrigeration system is safe and reliable. After the refrigeration system is miniaturized, the utility model discloses the volume of filling of every set of system is not high, and dangerous far below is large-scale ammonia system, and the compression condensing unit can set up in a flexible way on ground, furred ceiling or the goods shelves in cold room, need not special computer lab, reduces refrigeration plant's area.
The above-mentioned embodiments further explain in detail the objects, technical solutions and advantages of the present invention, and it should be understood that the above-mentioned embodiments are only the embodiments of the present invention, and are not intended to limit the scope of the present invention, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the scope of the present invention.
Claims (6)
1. The utility model provides a distributed multi-connected freezer refrigerating system, is including setting up at outdoor coolant circulation system (1) and a plurality of indoor multi-connected freezer refrigerating system (2) that are connected with coolant circulation system (1), its characterized in that: the cooling medium circulating system (1) comprises a plurality of cooling medium circulating units (5), wherein each cooling medium circulating unit (5) consists of a cooling tower (501), a cooling water pump (502) and a compression condensing unit pump (503); cooling medium of the compression condensing unit (3) is sent into a cooling medium heat exchange pipe (504) in the cooling tower (501) through a compression condensing unit pump (503) to be cooled and then returns to the compression condensing unit (3), and a cooling water pump (502) sprays cooling water at the bottom of the cooling tower onto the cooling medium heat exchange pipe (504) in the cooling tower (501); the multi-connected refrigeration house refrigerating system (2) comprises a compression condensing unit (3) and at least two air cooler modules (4) arranged in the same cold room; each air cooler module (4) is connected with a compression condensing unit (3) in the corresponding cold room.
2. The decentralized multi-split cold storage refrigeration system according to claim 1, characterized in that: the compression condensing unit (3) comprises a compressor (301), an oil separator (302), an oil return pressure reducing device (303), a water-cooled condenser (304) and a gas-liquid separator (305), wherein an exhaust port of the compressor (301) is connected with an input end of the oil separator (302), and an air suction port of the compressor (301) is connected with an output end of the gas-liquid separator (305); an oil return pressure reducing device (303) at the bottom of the oil separator (302) is connected with the input end of the gas-liquid separator (305) through an oil return branch; one end of the water-cooled condenser (304) is connected with the output end of the oil separator (302), and the other end of the water-cooled condenser is connected with the input end of the air cooler module (4) through a refrigerant liquid connecting pipe; the input end of the gas-liquid separator (305) is connected with the output end of the air cooler module (4) through a refrigerant gas connecting pipe.
3. The decentralized multi-split cold storage refrigeration system according to claim 2, characterized in that: air-cooler module (4) are including throttle subassembly (401), evaporimeter (402) and fan (403), evaporimeter (402) one end is continuous with water-cooled condenser (304) output through throttle subassembly (401), and the other end links to each other with the input of vapour and liquid separator (305).
4. The decentralized multi-split cold storage refrigeration system according to claim 3, characterized in that: the throttling component (401) is one or a combination of an electronic expansion valve, a thermal expansion valve or a capillary tube.
5. The decentralized multi-split cold storage refrigeration system according to claim 2, characterized in that: the compressor (301) is an air output adjustable compressor or a combination unit of the air output adjustable compressor and a fixed-speed compressor.
6. The decentralized multi-split cold storage refrigeration system according to claim 1, characterized in that: the cooling medium flowing through the compression condensing unit (3) and the compression condensing unit pump (503) is glycol solution, saline water and fluid medium which is not frozen in a low-temperature environment.
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| CN202020319980.2U CN212987691U (en) | 2020-03-16 | 2020-03-16 | Distributed multi-connected refrigeration house refrigerating system |
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| CN202020319980.2U CN212987691U (en) | 2020-03-16 | 2020-03-16 | Distributed multi-connected refrigeration house refrigerating system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111397233A (en) * | 2020-03-16 | 2020-07-10 | 南京久鼎精机冷冻设备有限公司 | Distributed multi-connected refrigeration house refrigerating system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111397233A (en) * | 2020-03-16 | 2020-07-10 | 南京久鼎精机冷冻设备有限公司 | Distributed multi-connected refrigeration house refrigerating system |
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