CN210832348U - Multi-connected refrigerating system - Google Patents

Multi-connected refrigerating system Download PDF

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Publication number
CN210832348U
CN210832348U CN201921059002.2U CN201921059002U CN210832348U CN 210832348 U CN210832348 U CN 210832348U CN 201921059002 U CN201921059002 U CN 201921059002U CN 210832348 U CN210832348 U CN 210832348U
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China
Prior art keywords
refrigeration
heat pipe
indoor unit
indoor
module
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CN201921059002.2U
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Chinese (zh)
Inventor
王祎
史俊茹
钟建法
张萌
秦雨峰
周晓晓
秦艳
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Dunan Environment Technology Co Ltd
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Dunan Environment Technology Co Ltd
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Abstract

The utility model relates to a multi-connected refrigeration system, which comprises an indoor unit; the heat pipe refrigeration outdoor unit comprises a plurality of heat pipe refrigeration modules, and the plurality of heat pipe refrigeration modules are arranged in parallel and are respectively connected with the indoor unit through a first circulating pipeline; the compression refrigeration outdoor unit comprises a plurality of compression refrigeration modules, and the compression refrigeration modules are arranged in parallel and are respectively connected with the indoor unit through second circulating pipelines; and the control device can respectively control the opening and closing of each heat pipe refrigeration module on the heat pipe refrigeration external machine and each compression refrigeration module on the compression refrigeration external machine. The utility model can fully utilize the advantage of low energy consumption of the heat pipe refrigeration external machine; meanwhile, the multi-connected refrigerating system has the function of refrigerating efficiency.

Description

Multi-connected refrigerating system
Technical Field
The utility model belongs to the technical field of refrigeration technology is relevant, especially relate to a many refrigerating system that ally oneself with.
Background
With the rapid development of the communication industry, the demand of newly building or modifying a data center on a heat dissipation air conditioner is greatly increased, and higher requirements on the performance and the energy conservation of the air conditioner are also provided. The separated heat pipe refrigeration technology is a novel refrigeration technology capable of effectively utilizing an outdoor natural cold source, and the heat pipe refrigeration system does not need to consume energy in working, so that the heat pipe refrigeration system is increasingly applied to heat dissipation of a data center.
It can be understood that the operation of the heat pipe refrigeration system requires that the outdoor temperature be lower than the indoor temperature, which still has application limitation for the data center which is operated uninterruptedly, especially losing its function in the season of high air temperature. Therefore, people combine compression refrigeration with heat pipe refrigeration, and the reliability of compression refrigeration and the energy conservation of heat pipe refrigeration are fully utilized to meet the requirement of uninterrupted refrigeration of a data center.
However, in the existing refrigeration system for data center heat dissipation, the heat pipe refrigeration system and the compression refrigeration system share a pipeline and a heat exchanger, so that the heat pipe refrigeration system and the compression refrigeration system on the existing refrigeration system can only operate independently, and the advantage of low energy consumption of heat pipe refrigeration cannot be fully exerted; in addition, the existing refrigeration system consisting of a heat pipe refrigeration system and a compression refrigeration system transfers heat in a mode of an intermediate heat exchanger, so that intermediate heat exchange loss is caused, and the overall refrigeration efficiency of the refrigeration system is reduced.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is necessary to provide a multiple refrigeration system to solve the technical problems in the prior art.
Concretely, a multi-connected refrigeration system comprises
An indoor unit;
the heat pipe refrigeration outdoor unit comprises a plurality of heat pipe refrigeration modules, and the plurality of heat pipe refrigeration modules are arranged in parallel and are respectively connected with the indoor unit through a first circulating pipeline;
the compression refrigeration outdoor unit comprises a plurality of compression refrigeration modules, and the compression refrigeration modules are arranged in parallel and are respectively connected with the indoor unit through second circulating pipelines;
and the control device can respectively control the opening and closing of each heat pipe refrigeration module on the heat pipe refrigeration external machine and each compression refrigeration module on the compression refrigeration external machine.
As the utility model discloses a preferred scheme, the indoor set includes a plurality of indoor set modules, and is a plurality of the parallelly connected setting of indoor set module, wherein every the indoor set module respectively with first circulating line with second circulating line connects and communicates.
As a preferred scheme of the utility model: and each indoor unit module is provided with a control element which can control the opening and closing of the corresponding indoor unit module.
As the utility model discloses a preferred scheme, it is a plurality of compression refrigeration module separately through the lateral conduit with second circulation tube connects and feeds through, wherein every be provided with the block on the lateral conduit respectively, be used for right the break-make of lateral conduit is controlled.
As a preferred embodiment of the present invention, the blocking member is a solenoid valve or a check valve.
As a preferred scheme of the utility model, the multi-connected refrigeration system further comprises a temperature measurement component, and the temperature measurement component can detect indoor and outdoor temperatures; the control device can control the work of the heat pipe refrigeration outer unit and the compression refrigeration outer unit according to the indoor temperature and the outdoor temperature measured by the temperature measuring component.
As the utility model discloses a preferred scheme, indoor set module includes first evaporimeter and first fan, first evaporimeter with first circulation pipeline with second circulation pipeline connects respectively and communicates, the air intake orientation of first fan first evaporimeter sets up.
As the utility model discloses a preferred scheme, heat pipe refrigeration module includes first condenser and second fan, first condenser with be formed with the difference in height between the first evaporimeter, just first condenser with connect and communicate through first circulation pipeline between the first evaporimeter.
As the preferred scheme of the utility model, compression refrigeration module is including the compressor, second condenser and the first expansion valve that connect gradually, first expansion valve sets up on the second circulation pipeline, and with first evaporimeter is connected.
As the preferred scheme of the utility model, the compressor with be connected with the oil separator between the second condenser, first evaporimeter with be connected with vapour and liquid separator between the compressor.
Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage:
the utility model provides a many refrigerating systems that ally oneself with sets up heat pipe refrigeration outer machine and compression refrigeration outer machine to the structure that ally oneself with more, and separately through first circulation pipeline and second circulation pipeline respectively with the indoor set is connected, make this many refrigerating systems during operation, heat pipe refrigeration outer machine and compression refrigeration outer machine can work simultaneously and to indoor refrigeration according to the demand, make full use of the advantage of the outer machine low energy consumption of heat pipe refrigeration; meanwhile, when the heat pipe refrigerating outer machine and the compression refrigerating outer machine work, heat exchange for indoor refrigeration is carried out indoors, so that heat exchange loss is avoided, and the effect of improving the refrigeration efficiency of the multi-connected refrigeration system is achieved; and the utility model discloses creatively adopts a plurality of outer machines of refrigeration to be used for jointly for the indoor set refrigeration, has expanded this refrigerating system's capacity, can replace a plurality of refrigerating system that have now to be applicable to the big place of refrigerating output demand, has the simplified pipeline and arranges, is convenient for control's effect.
Drawings
Fig. 1 is a schematic structural diagram of a multi-split refrigeration system according to an embodiment of the present invention.
10, an indoor unit; 11. an indoor unit module; 111. a first evaporator; 112. a first fan; 20. a heat pipe refrigerating external machine; 201. a first circulation line; 21. a heat pipe refrigeration module; 211. a first condenser; 212. a second fan; 30. compressing the refrigeration outdoor unit; 301. a second circulation line; 302. a branch line; 31. a compression refrigeration module; 311. a compressor; 312. a second condenser; 313. a first expansion valve; 314. an oil separator; 315. a gas-liquid separator.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, a multi-split refrigeration system according to an embodiment of the present invention includes an indoor unit 10, an outdoor unit 20 and an outdoor unit 30 connected to the indoor unit 10, and a control device (not shown) for opening and closing the outdoor unit 20 and the outdoor unit 30.
In the present embodiment, the heat pipe refrigeration outdoor unit 20 includes a plurality of heat pipe refrigeration modules 21, and the plurality of heat pipe refrigeration modules 21 are connected in parallel and are respectively connected to the indoor unit 10 through a first circulation pipeline 201; the outdoor compression refrigeration unit 30 includes a plurality of compression refrigeration modules 31, and the plurality of compression refrigeration modules 31 are connected in parallel and are respectively connected to the indoor unit 10 through a second circulation pipe 301. When the multi-connected refrigeration system of the embodiment works, each heat pipe refrigeration module 21 on the heat pipe refrigeration outdoor unit 20 can work to cool the indoor space through the first circulation pipeline 201 and the indoor unit 10, and each compression refrigeration module 31 on the compression refrigeration outdoor unit 30 can work to cool the indoor space through the second circulation pipeline 301 and the indoor unit 10. That is, the heat pipe refrigeration outdoor unit 20 and the compression refrigeration outdoor unit 30 according to the present embodiment can independently operate, and cool the indoor space through the indoor unit 10, respectively, thereby preventing heat exchange loss and improving the refrigeration efficiency of the multi-refrigerant system.
The indoor unit 10 of the present embodiment includes a plurality of indoor unit modules 11, and the indoor unit modules 11 are arranged in parallel, wherein each indoor unit module 11 is connected and communicated with the first circulation pipeline 201 and the second circulation pipeline 301, respectively. That is to say, the multi-split refrigeration system of the embodiment adopts a multi-split mode, and the cooling capacities generated by the heat pipe refrigeration module 21 on the heat pipe refrigeration outdoor unit 20 and the compression refrigeration module 31 on the compression refrigeration outdoor unit 31 during operation are respectively transmitted to each indoor unit module 11 through the corresponding first circulation pipeline 201 and second circulation pipeline 301, and each indoor unit module 11 is cooled.
Each indoor unit module 11 is provided with a control element (not shown), and the control element can control the opening and closing of the corresponding indoor unit module 11. The indoor unit modules 11 of the multi-connected refrigeration system according to the embodiment can selectively open specific indoor unit modules 11 according to the use requirements, so as to fully utilize the refrigeration capacity generated by the heat pipe refrigeration outer unit 20 and the compression refrigeration outer unit 20 during operation.
As a preferable aspect of the present invention, in the present embodiment, a blocking member (not shown) is provided to each of branch pipes 302, which are connected to and communicate with the second circulation pipe 301, of the plurality of compression/refrigeration modules 31, and controls on/off of the branch pipes. When the compression refrigeration module 31 of the external compression refrigeration unit 30 works, the blocking member may block the branch pipeline 302 corresponding to the compression refrigeration module 31 in the closed state, so that the refrigerant generated by the opened compression refrigeration module 31 during working can be completely introduced to the indoor unit 10 through the second circulation pipeline 301, thereby preventing the refrigerant from flowing back, and further improving the reliability of the external compression refrigeration unit 30 during working.
Specifically, the blocking member is provided as a solenoid valve or a check valve. When the blocking member is a one-way valve, the refrigerant on the compression and refrigeration module 31 can be led out to the second circulation line 301 through the branch line 302, and the refrigerant in the second circulation line 301 does not flow back to the corresponding compression and refrigeration module 31 through the branch line 302.
In this embodiment, the multi-split refrigeration system further includes a temperature measurement component (not shown), the temperature measurement component can detect the outdoor temperature of the indoor unit, and the control device can control the operations of the heat pipe refrigeration outdoor unit 20 and the compression refrigeration outdoor unit 30 according to the indoor temperature and the outdoor temperature measured by the temperature measurement component. When the multi-connected refrigeration system in the embodiment works, the heat pipe refrigeration outer unit 20 is preferentially selected to work and refrigerate, and when the refrigeration generated by the work of the heat pipe refrigeration outer unit 20 is not enough to meet the requirement of indoor cooling, or the heat pipe refrigeration outer unit 20 does not work because the outdoor temperature is higher than the indoor temperature, the compression refrigeration outer unit 30 is controlled to work and refrigerate, so that the purpose of fully utilizing the advantage of low energy consumption of the heat pipe refrigeration outer unit 20 is achieved.
Each indoor unit module 11 of the indoor unit 10 in this embodiment includes a first evaporator 111 and a first fan 112, the first evaporator 111 is connected and communicated with the first circulation pipeline 201 and the second circulation pipeline 301, and an air inlet of the first fan 112 is disposed toward the first evaporator 111, so that when the multi-split refrigeration system in this embodiment works, the heat pipe refrigeration outer unit 20 and the compression refrigeration outer unit 30 can cool the indoor air placed in the indoor unit module 11 through the first evaporator 111, specifically, under the guidance of the first fan 112, hot air passes through the first evaporator 111 and exchanges heat with the first evaporator 111, and becomes cold air and blows out, so as to achieve the effect of cooling the indoor. It should be noted that the first evaporator 111 of the present embodiment has two sets of heat exchange tube sets, and the two sets of heat exchange tube sets are independent from each other and are connected to the first circulation pipe 201 and the second circulation pipe 301 in a one-to-one correspondence.
The heat pipe cooling module 21 of the heat pipe cooling outdoor unit 20 of the present embodiment includes a first condenser 211 and a second fan 212, a height difference is provided between the first condenser 211 and the first evaporator 111, and the first condenser 211 and the first evaporator 111 are connected and communicated with each other through a first circulation pipe 201. When the heat pipe refrigeration module 21 is operated, the height difference between the first condenser 211 and the first evaporator 111 is used to provide power for the refrigerant to flow between the first condenser 211 and the first evaporator 111. When the heat pipe refrigeration module 21 works, a liquid refrigerant enters the first evaporator 111 through the first circulation pipeline 201 under the action of gravity and performs heat exchange with indoor air, the indoor air is cooled due to heat release, the liquid refrigerant is changed into a gaseous refrigerant due to heat absorption and then flows back to the first condenser 211 through the first circulation pipeline 201, the gaseous refrigerant performs heat exchange with outdoor air in the first condenser 211, and the gaseous refrigerant is changed into the liquid refrigerant due to heat release, so that a refrigeration cycle for cooling the indoor air is formed.
Each compression refrigeration module 31 of the compression refrigeration outdoor unit 30 of the present embodiment includes a compressor 311, a second condenser 312, and a first expansion valve 313, which are sequentially connected to each other, the first expansion valve 313 is disposed on the second circulation line 301, and is connected to the first evaporator 111, so that when the compression refrigeration module 31 of the present embodiment operates, the compressor 311, the second condenser 312, the first expansion valve 313, and the first evaporator 111 form a compression refrigeration cycle for cooling the indoor air. In the present embodiment, an oil separator 314 is connected between the compressor 311 and the second condenser 312, and a gas-liquid separator 315 is connected between the first evaporator 111 and the compressor 311.
The utility model provides a control method of multi-connected refrigeration system includes following step:
s1, acquiring indoor temperature, outdoor temperature and total refrigerating capacity required by indoor cooling; s2, selectively controlling the opening of the heat pipe refrigerating outer unit 20 and/or the compression refrigerating outer unit 30 according to the indoor temperature and the outdoor temperature; and S3, selecting the opening number of the heat pipe refrigeration modules 21 on the heat pipe refrigeration outdoor unit 20 and the opening number of the compression refrigeration modules 31 on the compression refrigeration outdoor unit 30 according to the total refrigerating capacity required by indoor cooling. That is to say, the multi-split refrigeration system of the embodiment selects the operation of the heat pipe refrigeration external unit 20 and the compression refrigeration external unit 30 according to the comparison between the indoor temperature to be cooled and the outdoor temperature, and the number of the heat pipe refrigeration modules 21 on the heat pipe refrigeration external unit 20 and the number of the compression refrigeration modules 31 on the compression refrigeration external unit are calculated according to the total indoor refrigeration capacity to be cooled and the indoor refrigeration capacity of each heat pipe refrigeration module 21 and each compression refrigeration module 31 when operating independently, so that the real-time feedback can be performed according to the indoor temperature to be cooled in the process. It should be noted that the indoor temperature is an indoor temperature to be subjected to cooling treatment when the multi-connected refrigeration system works, and includes an indoor air temperature corresponding to each indoor unit module in an open state; the outdoor temperature is the ambient temperature of the heat pipe compressor outdoor unit 20, the indoor air temperature and the outdoor ambient temperature can be measured by thermometers, and the total cooling capacity required for indoor cooling is the sum of the cooling capacities of the single indoor unit modules 11 to be cooled, wherein the cooling capacity of the single indoor unit module 11, that is, the real-time cooling capacity requirement of the single indoor unit module 11, can be obtained through certain calculation on the basis of collecting the return air temperature, the supply air temperature, the air volume and the external ambient temperature of the corresponding indoor unit module 11, and the description is not provided herein.
In this embodiment, the step S1 further includes obtaining the cooling capacity of each heat pipe cooling module 21 of the heat pipe cooling external unit 20 when cooling the room, and the cooling capacity of each compression cooling module 31 of the compression cooling external unit 20 when cooling the room, and the multi-split cooling system of this embodiment may specifically set each heat pipe cooling module 21 of the heat pipe cooling external unit 20 and the cooling capacity of each compression cooling module 31 of the compression cooling external unit 30 when operating according to the indoor use requirement to be cooled, and thus the description is not given here.
In step S2, when the indoor temperature is higher than the outdoor temperature, the heat-pipe outdoor unit 20 is turned on, and the compression-refrigeration outdoor unit 30 is selectively turned on. That is, when the outdoor temperature is lower than the indoor temperature, the heat pipe outdoor cooling unit 20 is preferably turned on, and whether the compression outdoor cooling unit 30 is turned on or not is selectively controlled according to actual needs.
Specifically, in the step S2, when the sum of the cooling capacities of the heat pipe refrigeration outdoor unit 20 at the time of opening each heat pipe refrigeration module 21 is smaller than the total cooling capacity required for cooling the indoor space, the compression refrigeration outdoor unit 30 is opened, so that the compression refrigeration outdoor unit 30 and the heat pipe refrigeration outdoor unit 20 work together, and otherwise, the compression refrigeration outdoor unit 30 is closed. That is, when the multi-split cooling system according to the present embodiment operates, the heat pipe cooling module 21 is preferentially used to cool the indoor space, so as to achieve the purpose of fully utilizing the low energy consumption of the heat pipe cooling outdoor unit 20 during operation.
When the indoor temperature is lower than the outdoor temperature in step S2, the heat pipe outdoor unit 20 cannot cool the indoor temperature, so the compression outdoor unit 30 is turned on, and the heat pipe outdoor unit 20 is turned off.
To sum up, the multi-connected refrigeration system and the control method thereof provided by the utility model set the heat pipe refrigeration outer unit and the compression refrigeration outer unit as a modularized multi-connected structure, and respectively connected with the indoor unit through the first circulation pipeline and the second circulation pipeline, so that when the multi-connected refrigeration system works, the heat pipe refrigeration outer unit and the compression refrigeration outer unit can simultaneously work and refrigerate the indoor unit according to the requirements, and the advantage of low energy consumption of the heat pipe refrigeration outer unit is fully utilized; meanwhile, when the heat pipe refrigerating outer machine and the compression refrigerating outer machine work, heat exchange for indoor refrigeration is carried out indoors, so that heat exchange loss is avoided, and the effect of improving the refrigeration efficiency of the multi-connected refrigeration system is achieved; and the utility model discloses creatively adopts a plurality of outer machines of refrigeration to be used for jointly for the indoor set refrigeration, has expanded this refrigerating system's capacity, can replace a plurality of refrigerating system that have now to be applicable to the big place of refrigerating output demand, has the simplified pipeline and arranges, is convenient for control's effect.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A multi-connected refrigeration system is characterized by comprising
An indoor unit;
the heat pipe refrigeration outdoor unit comprises a plurality of heat pipe refrigeration modules, and the plurality of heat pipe refrigeration modules are arranged in parallel and are respectively connected with the indoor unit through a first circulating pipeline;
the compression refrigeration outdoor unit comprises a plurality of compression refrigeration modules, and the compression refrigeration modules are arranged in parallel and are respectively connected with the indoor unit through second circulating pipelines;
and the control device can respectively control the opening and closing of each heat pipe refrigeration module on the heat pipe refrigeration external machine and each compression refrigeration module on the compression refrigeration external machine.
2. A multiple refrigerant system as set forth in claim 1, wherein: the indoor unit comprises a plurality of indoor unit modules, the indoor unit modules are arranged in parallel, and each indoor unit module is connected and communicated with the first circulating pipeline and the second circulating pipeline respectively.
3. A multiple refrigerant system as set forth in claim 2, wherein: and each indoor unit module is provided with a control element which can control the opening and closing of the corresponding indoor unit module.
4. A multiple refrigerant system as set forth in claim 1, wherein: the plurality of compression refrigeration modules are respectively connected and communicated with the second circulation pipeline through branch pipelines, and each branch pipeline is provided with a blocking piece for controlling the connection and disconnection of the branch pipeline.
5. A multi-split refrigeration system as set forth in claim 4, wherein: the blocking piece is set as a solenoid valve or a one-way valve.
6. A multiple refrigerant system as set forth in claim 1, wherein: the multi-connected refrigeration system also comprises a temperature measurement component, and the temperature measurement component can detect indoor and outdoor temperatures; the control device can control the work of the heat pipe refrigeration outer unit and the compression refrigeration outer unit according to the indoor temperature and the outdoor temperature measured by the temperature measuring component.
7. A multiple refrigerant system as set forth in claim 2, wherein: the indoor unit module comprises a first evaporator and a first fan, the first evaporator is connected and communicated with the first circulating pipeline and the second circulating pipeline respectively, and an air inlet of the first fan faces the first evaporator.
8. A multiple refrigerant system as set forth in claim 7, wherein: the heat pipe refrigeration module comprises a first condenser and a second fan, wherein a height difference is formed between the first condenser and the first evaporator, and the first condenser and the first evaporator are connected and communicated through a first circulating pipeline.
9. A multiple refrigerant system as set forth in claim 7, wherein: the compression refrigeration module comprises a compressor, a second condenser and a first expansion valve which are sequentially connected, wherein the first expansion valve is arranged on the second circulating pipeline and is connected with the first evaporator.
10. A multiple refrigerant system as claimed in claim 9, wherein: an oil separator is connected between the compressor and the second condenser, and a gas-liquid separator is connected between the first evaporator and the compressor.
CN201921059002.2U 2019-07-08 2019-07-08 Multi-connected refrigerating system Active CN210832348U (en)

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CN201921059002.2U CN210832348U (en) 2019-07-08 2019-07-08 Multi-connected refrigerating system

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CN201921059002.2U CN210832348U (en) 2019-07-08 2019-07-08 Multi-connected refrigerating system

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111861334A (en) * 2020-07-23 2020-10-30 北京京东振世信息技术有限公司 Circulation monitoring method, weighing scanning method and device of heat preservation unit and warehouse

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111861334A (en) * 2020-07-23 2020-10-30 北京京东振世信息技术有限公司 Circulation monitoring method, weighing scanning method and device of heat preservation unit and warehouse
CN111861334B (en) * 2020-07-23 2021-12-14 北京京东振世信息技术有限公司 Circulation monitoring method, weighing scanning method and device of heat preservation unit and warehouse

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