CN212962365U - Refrigeration structure and medical fridge of two accuses of two temperature - Google Patents
Refrigeration structure and medical fridge of two accuses of two temperature Download PDFInfo
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- CN212962365U CN212962365U CN202021150949.7U CN202021150949U CN212962365U CN 212962365 U CN212962365 U CN 212962365U CN 202021150949 U CN202021150949 U CN 202021150949U CN 212962365 U CN212962365 U CN 212962365U
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Abstract
The utility model provides a new refrigeration structure and a double-temperature double-control medical refrigerator. The refrigeration structure combines thermoelectric refrigeration and vapor compression refrigeration by utilizing the pipeline design of the multi-branch parallel evaporator, thereby realizing refrigeration with different temperature intervals and different precision grades. The first chamber of the double-temperature and double-control medical refrigerating box can realize coarse temperature control (2-8 ℃), and can be used for storing medicines; the second chamber of the double-temperature and double-control medical refrigerating box can realize accurate temperature control (4 +/-0.5 ℃) by the semiconductor refrigerating sheet and can be used for storing blood.
Description
Technical Field
The utility model relates to a refrigeration plant, concretely relates to refrigeration structure and contain refrigeration structure's fridge.
Background
The explosive development of the medical industry puts higher demands on the existing medical instruments. The blood collecting vehicle is common public medical equipment, and in order to ensure the activity of blood, the blood collecting vehicle needs to be moved into a blood refrigerator for low-temperature storage as soon as possible after blood collection. The international GB/T21278-2007 stipulates that the blood refrigeration temperature should be kept at 4 +/-1.5 ℃, if the temperature is too high, a large amount of red blood cells are damaged, and the oxygen affinity and oxygen carrying level of the blood are reduced; the low temperature, the cold storage energy consumption is increased, the glucose consumption is accelerated, and the organism electrolyte is unbalanced, thereby influencing the effect and the safety of blood transfusion. In order to ensure the health state of blood donors, emergency medicines need to be prepared on the blood collecting vehicle, and the effectiveness of the medicines is influenced by factors such as temperature, humidity, light and the like. According to the requirements of medical industry standard YY/T0086-2007, the temperature of the medicine refrigeration is controlled to be 2-8 ℃. Moreover, when the blood donation vehicle is parked outside, the temperature in the blood donation vehicle is greatly changed along with seasons, so that the drug effect is easily reduced, or the medicine is easily deteriorated, and toxic reaction is easily caused. The blood collection vehicle is used as the first ring of medical blood transfusion, wherein the preservation of blood can affect the quality of subsequent blood transfusion; in addition, emergency medicines should be prepared in the blood collecting vehicle to deal with emergency situations, and many medicines also need to be refrigerated for storage. Most of the refrigeration boxes equipped in the existing blood sampling vehicle adopt fixed-frequency vapor compression refrigeration, so that the actual refrigeration requirements cannot be met, firstly, the temperature control precision is single, and the same high temperature control precision is adopted for medicine and blood refrigeration, so that the medicine storage is not beneficial, and the energy waste is caused; secondly, the high-precision temperature control needs to be at the cost of frequently starting and stopping the compressor, so that the service life of the compressor is shortened; and thirdly, two medical refrigerators with different precisions are purchased simultaneously, so that the cost is very high, and the limited storage space in the blood sampling vehicle cannot be fully utilized.
Researches show that main indexes for evaluating the temperature performance of the medical low-temperature storage equipment comprise temperature control performance, characteristic point temperature, cooling speed, uniformity and fluctuation value. In the medical refrigeration management of the blood collecting vehicle, the most used is a vapor compression system because the vapor compression system has good COP value and larger refrigerating capacity; however, the temperature control system of vapor compression refrigeration is difficult to realize the refrigeration conditions of different temperature intervals and different temperature control accuracies. If the temperature control precision of the medicine area is adopted for the blood area, the temperature stability of the blood during storage can be influenced due to the large oscillation of the temperature of the refrigerating chamber, and the phenomenon of human body rejection infection during blood input can occur; if the temperature control precision of the blood area is adopted for the medicine area, the compressor is started and stopped frequently, the service life is shortened, and the energy consumption is huge. It should be noted that at least 1min is required between the compressor stop and restart, which is mainly to protect the compressor from damage due to too high reverse voltage in the compressor.
Disclosure of Invention
In order to realize the refrigeration of different temperature intervals, different precision grades, the utility model provides a refrigeration structure to and the medical fridge of two accuses of two temperature.
The utility model provides a refrigeration structure, including first cavity, second cavity, compressor, condenser, choke valve, main road evaporator, heat dissipation evaporimeter, branch road evaporator, radiator and semiconductor refrigeration piece, compressor, condenser and choke valve pass through the pipeline series connection; the main path evaporator is arranged in the first cavity, the heat dissipation evaporator is arranged in the first cavity, the branch path evaporator is arranged in the second cavity, and the main path evaporator, the heat dissipation evaporator and the branch path evaporator are connected in parallel through pipelines and then connected between the compressor and the throttle valve; the radiator is arranged in the second chamber; the hot end of the semiconductor refrigeration piece is in contact with the heat dissipation evaporator, and the cold end of the semiconductor refrigeration piece is in contact with the radiator.
The compressor is used for compressing the refrigerant, the condenser is used for condensing the compressed refrigerant, and after the condensed refrigerant passes through the throttling valve, the condensed refrigerant can respectively enter the main path evaporator, the heat dissipation evaporator or the branch path evaporator so as to absorb the ambient heat, so that the temperature of the first chamber or the second chamber is reduced. The semiconductor refrigerating sheet is used for refrigerating, and the cold end of the semiconductor refrigerating sheet absorbs ambient heat through the radiator, so that the temperature of the second chamber is reduced; the heat released from the hot end of the evaporator is absorbed by the refrigerant in the heat-dissipating evaporator and is carried away. Due to the fact that the two cavities are arranged, the temperatures of the two cavities can be controlled respectively, and the semiconductor refrigerating piece enables the temperature of the second cavity to be more accurate, and therefore refrigeration with different temperature intervals and different precision grades is achieved.
The heat dissipation evaporator further comprises a first valve and a second valve, wherein the first valve is arranged on an inlet pipeline of the heat dissipation evaporator, and the second valve is arranged on an inlet pipeline of the branch evaporator. The first valve is used for controlling whether the refrigerant flows through the heat dissipation evaporator or not, and the second valve is used for controlling whether the refrigerant flows through the branch evaporator or not.
Further, the heat dissipation evaporator is a micro-channel parallel flow evaporator.
Further, the radiator is a flat tube radiator.
The utility model provides a medical fridge of two accuses of two temperatures, including box, compressor, condenser, choke valve, main road evaporator, heat dissipation evaporimeter, branch evaporator, radiator, semiconductor refrigeration piece, first valve and second valve, be equipped with first cavity and second cavity in the box, compressor, condenser and choke valve pass through the pipeline and establish ties; the main path evaporator is arranged in the first cavity, the heat dissipation evaporator is arranged in the first cavity, the branch path evaporator is arranged in the second cavity, and the main path evaporator, the heat dissipation evaporator and the branch path evaporator are connected in parallel through pipelines and then connected between the compressor and the throttle valve; the radiator is arranged in the second chamber; the hot end of the semiconductor refrigeration sheet is in contact with the heat dissipation evaporator, and the cold end of the semiconductor refrigeration sheet is in contact with the radiator; the first valve is arranged on an inlet pipeline of the heat dissipation evaporator, and the second valve is arranged on an inlet pipeline of the branch evaporator.
Further, the first chamber is located above the second chamber.
Furthermore, wheels are arranged at the bottom of the box body.
The utility model has the advantages that: the refrigeration structure combines thermoelectric refrigeration and vapor compression refrigeration by utilizing the pipeline design of the multi-branch parallel evaporator, thereby realizing refrigeration with different temperature intervals and different precision grades. The first chamber of the double-temperature and double-control medical refrigerating box can realize coarse temperature control (2-8 ℃), and can be used for storing medicines; the second chamber of the double-temperature and double-control medical refrigerating box can realize accurate temperature control (4 +/-0.5 ℃) by the semiconductor refrigerating sheet and can be used for storing blood.
Drawings
Fig. 1 is a schematic view of a refrigeration structure according to the present invention.
Fig. 2 is a schematic view of the medical refrigerator with two temperature and two control functions of the present invention.
Fig. 3 is a flow chart of the operation of the medical refrigerator with double temperature and double control of the present invention.
The reference signs explain: 1. the compressor comprises a compressor, 2 a condenser, 3 a throttle valve, 4 a main path evaporator, 5 a radiating evaporator, 6 a branch path evaporator, 7 a semiconductor refrigerating sheet, 8 a radiator, 9 a first valve, 10 a second valve, 11 a first chamber, 12 a second chamber, 13 a box body and 14 a pipeline.
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 efforts belong to the protection scope of the present invention.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships are changed accordingly. The thickness and shape of each layer of film in the drawings do not reflect the true proportion, and the purpose is only to illustrate the content of the present invention.
As shown in fig. 1, a refrigerating structure includes a first chamber 11, a second chamber 12, a compressor 1, a condenser 2, a throttle valve 3, a main path evaporator 4, a heat radiation evaporator 5, a branch path evaporator 6, a radiator 8, and a semiconductor refrigerating sheet 7. The compressor 1, the condenser 2 and the throttle valve 3 are connected in series through pipelines, namely, an outlet of the compressor 1 is connected with an inlet of the condenser 2 through a pipeline, and an outlet of the condenser 2 is connected with an inlet of the throttle valve 3 through a pipeline. The main path evaporator 4 is arranged in the first chamber 11, the heat dissipation evaporator 5 is arranged in the first chamber 11, the branch path evaporator 6 is arranged in the second chamber 12, the main path evaporator 4, the heat dissipation evaporator 5 and the branch path evaporator 6 are connected in parallel through pipelines and then connected between the compressor 1 and the throttle valve 3, namely, inlets of the main path evaporator 4, the heat dissipation evaporator 5 and the branch path evaporator 6 are all connected with an outlet of the throttle valve 3 through a pipeline, and outlets of the main path evaporator 4, the heat dissipation evaporator 5 and the branch path evaporator 6 are all connected with an inlet of the compressor 1 through a pipeline. The radiator 8 is arranged in the second chamber 12; the hot end of the semiconductor refrigeration sheet 7 is contacted with the heat dissipation evaporator 5, and the cold end of the semiconductor refrigeration sheet 7 is contacted with the radiator 8.
The compressor 1, the condenser 2, the throttle valve 3, the main path evaporator 4, the heat dissipation evaporator 5, the branch path evaporator 6 and the pipeline connecting the two form a vapor compression refrigerating unit, and the first chamber 11 and the second chamber 12 can be cooled through heat transfer of a refrigerant. The semiconductor chilling plate 7 is a module which can be chilled when being electrified so as to accurately control the temperature of the second chamber 12.
In some preferred embodiments, the refrigeration structure further comprises a first valve 9 and a second valve 10, the first valve 9 being disposed on the inlet pipe of the heat dissipation evaporator 5, and the second valve 10 being disposed on the inlet pipe of the bypass evaporator 6. The first valve 9 is used for controlling whether the refrigerant flows through the heat dissipation evaporator 5, and when the first valve 9 is closed, the refrigerant does not flow through the heat dissipation evaporator 5; when the first valve 9 is opened, the refrigerant will flow through the heat radiating evaporator 5. The second valve 10 is used to control whether the refrigerant flows through the branch evaporator 6, and when the second valve 10 is closed, the refrigerant will not flow through the branch evaporator 6; when the second valve 10 is opened, refrigerant will flow through the bypass evaporator 6.
In some preferred embodiments, the heat rejection evaporator 5 is a microchannel parallel flow evaporator.
In some preferred embodiments, the heat sink 8 is a flat tube heat sink.
Through vapor compression and thermoelectric refrigeration combination, the utility model discloses a different precision accuse temperature can be realized to refrigeration structure, reaches the purpose of two accuses of two temperature, saves the cost. These characteristics make the utility model discloses a refrigeration structure can be applied to the fridge.
As shown in fig. 2, the medical refrigerating box with double temperature and double control comprises a box body 13, a compressor 1, a condenser 2, a throttle valve 3, a main path evaporator 4, a heat dissipation evaporator 5, a branch path evaporator 6, a radiator 8, a semiconductor refrigerating sheet 7, a first valve 9 and a second valve 10. The box body 13 is a cuboid vertical box body, and four wheels are arranged at the bottom of the box body; the box body 13 is provided with a first chamber 11 and a second chamber 12, and the first chamber 11 is positioned above the second chamber 12. The compressor 1, the condenser 2 and the throttle valve 3 are arranged above the first chamber 11, in series with each other via a conduit 14. The main path evaporator 4 is arranged at the top in the first chamber 11, the heat dissipation evaporator 5 is arranged at the bottom in the first chamber 11, the branch path evaporator 6 is arranged at the bottom in the second chamber 12, and the main path evaporator 4, the heat dissipation evaporator 5 and the branch path evaporator 6 are connected in parallel through a pipeline 14 and then connected between the compressor 1 and the throttle valve 3. The radiator 8 is arranged on top in the second chamber 12; the hot end of the semiconductor refrigeration sheet 7 is contacted with the heat dissipation evaporator 5, and the cold end of the semiconductor refrigeration sheet 7 is contacted with the radiator 8; a first valve 9 is provided on the inlet pipe of the heat-radiating evaporator 5 and a second valve 10 is provided on the inlet pipe of the bypass evaporator 6.
The start, stop or opening and closing of the compressor 1, the throttle valve 3, the semiconductor refrigeration sheet 7, the first valve 9 and the second valve 10 can be controlled by a controller, which is common in the prior art and is not described herein again. The first chamber 11 and the second chamber 12 of the case 13 are each provided with a temperature sensor for measuring temperature. The temperature sensor may be connected to the controller to communicate measured temperature data to the controller. The temperature sensor may employ a Pt100 thermocouple.
The cold end of the semiconductor refrigerating sheet 7 refrigerates the second chamber 12, and the temperature of the second chamber 12 can be accurately controlled. Thus, the first chamber 11 may serve as a drug area and the second chamber 12 may serve as a blood area. The temperature control precision of the medicine area (2-8 ℃) is not high, and the temperature control is realized by starting and stopping the compressor, so that the starting and stopping frequency of the compressor is lower; the temperature control precision requirement of the blood zone (4 +/-1 ℃) is higher, and the internal voltage of the semiconductor refrigerating sheet is adjusted by adopting a semiconductor constant temperature controller which is low in cost, easy to operate and free of noise.
The compressor 1, the condenser 2, the throttle valve 3, the main path evaporator 4, the heat dissipation evaporator 5, the branch path evaporator 6 and the pipeline 14 connecting the main path evaporator and the heat dissipation evaporator form a vapor compression refrigerating unit which is used for large-scale refrigeration of a medicine area and pre-cooling of a blood area. The opening degree of the heat dissipation evaporator 5 and the opening degree of the branch evaporator 6 are respectively controlled by a first valve 9 (a valve No. 1) and a second valve 10 (a valve No. 2), the heat dissipation evaporator 5 only works during the temperature control period of the semiconductor refrigerating sheet 7, and the branch evaporator 6 only works during the large-amplitude precooling period of the blood, so that the double-temperature double-control regulation is realized.
The heat dissipation evaporator 5, the semiconductor refrigeration sheet 7 and the radiator 8 form a semiconductor refrigeration module, wherein the semiconductor refrigeration sheet 7 is tightly attached to the heat dissipation evaporator 5 and the radiator 8. The heat dissipation evaporator 5 can be a microchannel parallel flow evaporator and is also used as a heat dissipation evaporator of a vapor compression refrigerating unit, the heat at the hot end of the refrigerating sheet is taken away by utilizing the phase change of the refrigerating working medium in the microchannel, and the refrigerant enters the compressor after being evaporated to complete vapor compression refrigeration cycle. The radiator 8 can be a flat heat pipe heat exchanger, has fins for increasing the heat absorption area, and can refrigerate quickly. The hot end temperature of the semiconductor refrigerating sheet 7 in the middle area is extremely high, after the semiconductor refrigerating sheet is actively cooled by the microchannel parallel flow evaporator, the hot end temperature of the semiconductor refrigerating sheet 7 is greatly reduced, the heat dissipation effect is excellent, a low-temperature working environment is created for the refrigerating sheet, and the refrigerating coefficient is improved.
Fig. 3 shows the working process of the medical refrigerating box with double temperature and double control:
(1) the refrigerating box is connected with a power supply, the vapor compression type refrigerating system starts to work, the No. 2 valve is opened, and the medicine area and the blood area are precooled simultaneously, so that the interior of the box body is greatly cooled;
(2) when the temperatures of the medicine area and the blood area in the box body reach 8 ℃ at the same time, the precooling work is finished, the No. 2 valve is closed, the branch evaporator stops working, and the No. 1 valve is opened at the same time;
(3) after the No. 1 valve is opened, the semiconductor refrigerating sheet starts to refrigerate, and a refrigerant flowing through the microchannel parallel flow evaporator absorbs the heat of the hot end of the refrigerating sheet to dissipate heat, so that the temperature of the hot end is greatly reduced; a flat tubular radiator at the cold end is arranged in the blood area, and the temperature range of 4 +/-0.5 ℃ is maintained;
(4) a Pt100 thermocouple arranged in the box body measures the temperature, and the temperature of the medicine area is maintained by controlling the start and stop of a compressor, so that low-precision coarse temperature control is realized; the semiconductor constant temperature controller arranged in the blood area of the refrigerating box controls the voltage of the semiconductor refrigerating sheet, and real-time high-precision temperature control is realized.
Therefore, the medicine is stored on the upper layer of the double-temperature double-control medical refrigerator, and the vapor compression refrigeration system realizes the coarse temperature control of the medicine area (2-8 ℃); the lower layer of the refrigerating box stores blood, the temperature control of a blood zone (4 +/-0.5 ℃) is realized by a semiconductor refrigerating system, and the internal temperature of the box body is quickly stabilized by controlling the voltage of a PN junction, so that the temperature is prevented from oscillating greatly, constant temperature is obtained under the condition of low energy consumption, and the aim of better storing the blood and medicines is fulfilled. The temperature in the box body is uniform and the box body is rapidly cooled. The medicine area is used for vapor compression refrigeration, so that frequent starting and stopping of the compressor caused by a single temperature control system and high-precision temperature control of blood are avoided, and the service life of the compressor is prolonged; the blood area is refrigerated by a semiconductor and is combined with an evaporator for vapor compression, so that the refrigeration efficiency is improved, the energy consumption of the refrigeration piece is reduced, and the rapid refrigeration is realized. The micro-scale effect and the inlet section effect of the micro-channel parallel flow evaporator strengthen heat dissipation, have the characteristics of compact structure, high heat exchange efficiency, light weight, safe and reliable operation and the like, can realize active cooling, and support the high-speed operation of high-density heat electronic devices.
The utility model discloses a medical fridge of two accuses of two temperatures still has following advantage: the vapor compression refrigeration has good COP value and larger refrigeration capacity, can quickly reduce the temperature to the required environment under the condition of lower energy consumption, has better working stability and is suitable for medical storage equipment; the semiconductor refrigeration has the characteristics of convenient control, reliable operation, flexible layout, strong adaptability and the like, and can realize high-precision control at 0.1 ℃; the double temperature control system avoids energy loss caused by frequent starting and stopping of the compressor due to single temperature control precision and prolongs the service life of the compressor; the design of the multilayer evaporator can realize refrigeration of a medicine area, heat dissipation of a hot end and precooling of a blood area simultaneously through multi-valve control, and has multiple effects; the working environment of the refrigerating sheet is optimized, the hot-end heat exchanger of the semiconductor refrigerating sheet exchanges heat with the evaporator through the high-heat-conduction material, the heat dissipation of the refrigerating sheet is enhanced, the temperature of the hot end is reduced, the temperature difference of two sides of the module is reduced, and the COP of the refrigerating sheet module is obviously improved; the top of the refrigerator body is provided with a fan, the cold air circulates for 360 degrees, and the medicine and the blood in the refrigerator body are uniformly refrigerated.
Therefore, the utility model provides a present single accuse temperature mode be difficult to satisfy the problem that medical supplies low temperature storage temperature required, the compressor low frequency opens and stops under the coarse control temperature precision, and the accurate accuse temperature of refrigeration piece voltage control can be used to store bacterin, medicament, various biological agent etc. under the high control temperature precision, is applicable to disease control center, health institute, hospital, blood station and research institution, and practical application's economy is huge with the popularization benefit.
The above embodiments are only used for illustrating the present invention, and not for limiting the present invention, and those skilled in the relevant technical field can make various changes and modifications without departing from the spirit and scope of the present invention, so that all equivalent technical solutions also belong to the scope of the present invention, and the protection scope of the present invention should be defined by the claims.
Claims (7)
1. A refrigeration structure, characterized by: the refrigeration system comprises a first cavity, a second cavity, a compressor, a condenser, a throttle valve, a main path evaporator, a heat dissipation evaporator, a branch path evaporator, a radiator and a semiconductor refrigeration sheet, wherein the compressor, the condenser and the throttle valve are connected in series through pipelines; the main path evaporator is arranged in the first cavity, the heat dissipation evaporator is arranged in the first cavity, the branch path evaporator is arranged in the second cavity, and the main path evaporator, the heat dissipation evaporator and the branch path evaporator are connected in parallel through pipelines and then connected between the compressor and the throttle valve; the radiator is arranged in the second chamber; the hot end of the semiconductor refrigeration piece is in contact with the heat dissipation evaporator, and the cold end of the semiconductor refrigeration piece is in contact with the radiator.
2. A cooling structure according to claim 1, characterized in that: the heat dissipation evaporator comprises a branch evaporator and is characterized by further comprising a first valve and a second valve, wherein the first valve is arranged on an inlet pipeline of the heat dissipation evaporator, and the second valve is arranged on an inlet pipeline of the branch evaporator.
3. A cooling structure according to claim 1 or 2, characterized in that: the heat dissipation evaporator is a micro-channel parallel flow evaporator.
4. A cooling structure according to claim 3, wherein: the radiator is a flat tube radiator.
5. A medical fridge of two accuses of two temperatures which characterized in that: the refrigeration system comprises a box body, a compressor, a condenser, a throttle valve, a main path evaporator, a heat dissipation evaporator, a branch path evaporator, a radiator, a semiconductor refrigeration sheet, a first valve and a second valve, wherein a first cavity and a second cavity are arranged in the box body, and the compressor, the condenser and the throttle valve are connected in series through pipelines; the main path evaporator is arranged in the first cavity, the heat dissipation evaporator is arranged in the first cavity, the branch path evaporator is arranged in the second cavity, and the main path evaporator, the heat dissipation evaporator and the branch path evaporator are connected in parallel through pipelines and then connected between the compressor and the throttle valve; the radiator is arranged in the second chamber; the hot end of the semiconductor refrigeration sheet is in contact with the heat dissipation evaporator, and the cold end of the semiconductor refrigeration sheet is in contact with the radiator; the first valve is arranged on an inlet pipeline of the heat dissipation evaporator, and the second valve is arranged on an inlet pipeline of the branch evaporator.
6. The medical cooler of claim 5, wherein: the first chamber is located above the second chamber.
7. The medical refrigerator of claim 5 or 6, wherein: wheels are arranged at the bottom of the box body.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112539589A (en) * | 2020-06-19 | 2021-03-23 | 江西哲霆科技有限公司 | Refrigeration structure and medical fridge of two accuses of two temperature |
| CN117722817A (en) * | 2024-01-30 | 2024-03-19 | 广东凯得智能科技股份有限公司 | Intelligent control method, system, equipment and medium for refrigerating temperature control |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112539589A (en) * | 2020-06-19 | 2021-03-23 | 江西哲霆科技有限公司 | Refrigeration structure and medical fridge of two accuses of two temperature |
| CN117722817A (en) * | 2024-01-30 | 2024-03-19 | 广东凯得智能科技股份有限公司 | Intelligent control method, system, equipment and medium for refrigerating temperature control |
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