Refrigerating device

Abstract

The utility model discloses a refrigerating device, and belongs to the technical field of refrigerating technologies. The refrigeration device comprises a plurality of air coolers, a first communication link and a second communication link. The first communication link comprises a plurality of control cabinets which are connected through a first communication port, and the second communication link comprises the control cabinets and a condensing unit which are connected through a second communication port; the first communication link is a link for interaction between the control cabinets, and the second communication link is a link for interaction between the condensing unit and the control cabinets; the control cabinets are in one-to-one correspondence with the air coolers, and each control cabinet is connected with the corresponding air cooler through an air cooler connecting wire; and the condensing unit is connected with the air cooler through a pipeline. The refrigerating device can realize linkage control of the air cooler and the condensing unit.

Description

Technical Field

[0001] The present application relates to the field of refrigeration technology, and in particular to a refrigeration device. Background Art

[0002] Refrigeration devices are often used in food processing, storage and transportation, pharmaceutical production and other fields to achieve temperature regulation. Refrigeration devices include air coolers, condensing units and control cabinets. In order to achieve efficient temperature control, it is usually necessary to control the air coolers, condensing units and control cabinets in the refrigeration device in a coordinated manner.

[0003] In the related art, a thermostat is used to control the start and stop of the air cooler, and a pressure switch is used to control the start and stop of the condensing unit. However, in the above scheme, the air cooler and the condensing unit are controlled independently, and the refrigeration linkage performance is poor.

[0004] Therefore, how to achieve linkage control of the air cooler and the condensing unit is a technical problem that those skilled in the art currently need to solve. Utility Model Content

[0005] The purpose of the present application is to provide a refrigeration device capable of realizing linkage control of an air cooler and a condensing unit.

[0006] In order to solve the above technical problems, the present application provides a refrigeration device, which includes: multiple air coolers, a first communication link and a second communication link; the first communication link includes multiple control cabinets connected through a first communication port, and the second communication link includes the control cabinet and a condensing unit connected through a second communication port; the first communication link is a link for interaction between the control cabinets, and the second communication link is a link for interaction between the condensing unit and the control cabinet; the control cabinets correspond to the air coolers one by one, and each of the control cabinets is connected to the corresponding air cooler through an air cooler connecting line; the condensing unit is connected to the air cooler through a pipe.

[0007] Optionally, the refrigeration device includes N air cooler assemblies, each of which includes at least two air coolers, and the air coolers in the same air cooler assembly are arranged in the same cold storage; N>1;

[0008] The refrigeration device includes N first communication links, the i-th first communication link is a link formed by connecting multiple control cabinets corresponding to the i-th air cooler combination through the first communication port, 1≤i≤N.

[0009] Optionally, the refrigeration device is provided with one condensing unit, and the refrigeration device is provided with one second communication link, and the second communication link is a link formed by connecting the condensing unit with all the control cabinets through the second communication port.

[0010] Optionally, the refrigeration device is provided with N condensing units, and the refrigeration device is provided with N second communication links, and the i-th second communication link is a link formed by connecting the condensing unit with multiple control cabinets corresponding to the i-th air cooler combination through the second communication port.

[0011] Optionally, the refrigeration device includes M air coolers and M control cabinets, M>1, and all the air coolers are arranged in the same cold storage; the j-th control cabinet is connected to the j+1-th control cabinet through the first communication port, 1≤j<M.

[0012] Optionally, the refrigeration device is provided with one condensing unit, and the refrigeration device is provided with one second communication link, and the second communication link is a link formed by connecting the condensing unit with all the control cabinets through the second communication port.

[0013] Optionally, the refrigeration device is provided with M condensing units, and the j-th condensing unit is connected to the j-th air cooler through a pipeline;

[0014] The refrigeration device is provided with M second communication links, and the jth second communication link is a link formed by connecting the jth condensing unit with the jth air cooler via the second communication port.

[0015] Optionally, the control cabinet is connected to a host device, and the control cabinet is used to control the air cooler according to a control instruction issued by the host device.

[0016] Optionally, also include:

[0017] The display connected to the control cabinet is used to display the information collected by the control cabinet.

[0018] Optionally, a controller is provided in the condensing unit.

[0019] The present application provides a refrigeration device, comprising: a plurality of air coolers, a first communication link and a second communication link; the first communication link comprises a plurality of control cabinets connected via a first communication port, and the second communication link comprises the control cabinet and a condensing unit connected via a second communication port; the first communication link is a link for interaction between the control cabinets, and the second communication link is a link for interaction between the condensing unit and the control cabinet; the control cabinets correspond one to one with the air coolers, and each of the control cabinets is connected to the corresponding air cooler via an air cooler connecting line; the condensing unit is connected to the air cooler via a pipeline.

[0020] A refrigeration device provided by the present application includes a plurality of air coolers, a plurality of control cabinets and a condensing unit. The plurality of control cabinets are connected to each other through a first communication port to form a first communication link, and the condensing unit is connected to the control cabinet through a second communication port to form a second communication link. The control cabinets can be linked to each other based on the first communication link, and the control cabinet and the condensing unit can be linked to each other based on the second communication link. The above scheme can realize the linkage control of the air cooler and the condensing unit, thereby improving the refrigeration linkage performance of the refrigeration device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0022] Figure 1 A schematic diagram of the structure of a first refrigeration device provided in an embodiment of the present application;

[0023] Figure 2 A schematic diagram of the structure of a second refrigeration device provided in an embodiment of the present application;

[0024] Figure 3 A schematic diagram of the structure of a third refrigeration device provided in an embodiment of the present application;

[0025] Figure 4 A schematic diagram of the structure of a fourth refrigeration device provided in an embodiment of the present application;

[0026] Figure 5 A schematic diagram of the structure of a fifth refrigeration device provided in an embodiment of the present application;

[0027] Figure 6 A schematic diagram of the structure of a sixth refrigeration device provided in an embodiment of the present application;

[0028] Figure 7 This is a schematic diagram of the structure of the seventh refrigeration device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0029] The core of the present application is to provide a refrigeration device that can realize the linkage control of the air cooler and the condensing unit, thereby improving the refrigeration linkage performance of the refrigeration device.

[0030] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] See below Figure 1 , Figure 1 This is a schematic diagram of the structure of the first refrigeration device provided in the embodiment of the present application, showing air coolers 1-n, control cabinets 1-n, and condensing units. The control cabinets are connected to each other to form a first communication link (also called a first communication network), and the control cabinet and the condensing unit are connected to form a second communication link (also called a second communication network). The first communication link is a link for interaction between the control cabinets, and the second communication link is a link for interaction between the condensing unit and the control cabinet.

[0032] The control cabinet can communicate and interact with other control cabinets through the first communication link to achieve coordinated control of each air cooler. The control cabinet and the condensing unit can communicate and interact through the second communication link so that the condensing unit starts or shuts down the condensing function according to the working status of the air cooler transmitted by the control cabinet.

[0033] The control cabinet is provided with a first communication port and a second communication port, and the condensing unit is provided with a second communication port. Therefore, the first communication link includes a plurality of control cabinets connected via the first communication port, and the second communication link includes the control cabinet and the condensing unit connected via the second communication port. This embodiment does not limit the number of the first communication link and the second communication link.

[0034] The control cabinets correspond to the air coolers one by one, and each control cabinet is connected to the corresponding air cooler via an air cooler connecting line; the condensing unit is connected to the air cooler via a pipeline, and the pipeline is used to transmit refrigerant.

[0035] As a feasible implementation, a control cabinet can be connected to a host device, and the control cabinet is used to control the air cooler according to the control instructions issued by the host device. The above-mentioned refrigeration device also includes a display connected to the control cabinet, which is used to display the information collected by the control cabinet. A controller is provided in the condensing unit to control the working state of the condensing unit.

[0036] A refrigeration device provided in this embodiment includes multiple air coolers, multiple control cabinets and a condensing unit. The multiple control cabinets are connected through a first communication port to form a first communication link, and the condensing unit is connected to the control cabinet through a second communication port to form a second communication link. The control cabinets can be linked to each other based on the first communication link, and the control cabinet and the condensing unit can be linked to each other based on the second communication link. The above scheme can realize the linkage control of the air cooler and the condensing unit, thereby improving the refrigeration linkage performance of the refrigeration device.

[0037] As for Figure 1 Further introduction to the corresponding embodiment, the above-mentioned multiple air coolers can be set in different cold storages. In this embodiment, the air coolers in the same cold storage can be set as an air cooler combination, so that the refrigeration device includes N air cooler combinations, each of which includes at least two air coolers, and the air coolers in the same air cooler combination are set in the same cold storage; N>1. Correspondingly, the air coolers in the same cold storage need to be controlled in linkage, and each cold storage corresponds to a first communication link, that is, the refrigeration device includes N first communication links, and the i-th first communication link is a link formed by connecting multiple control cabinets corresponding to the i-th air cooler combination through the first communication port, 1≤i≤N.

[0038] For further information, see Figure 2 , Figure 2 This is a schematic diagram of the structure of the second refrigeration device provided in the embodiment of the present application, wherein n air coolers are distributed in N cold storages, and the refrigeration device further comprises n control cabinets and 1 condensing unit. Control cabinet 1 and control cabinet 2 are connected through the first communication port to form the first first communication link, control cabinet 3 and control cabinet 4 are connected through the first communication port to form the second first communication link, control cabinet n-1 and control cabinet n are connected through the first communication port to form the Nth first communication link, and there is no connection between different first communication links. The condensing unit is connected to control cabinets 1 to n to form a second communication link. In the above embodiment, there is one condensing unit, which is connected to all the air coolers through pipes; the refrigeration device is provided with one second communication link, and the second communication link is a link formed by connecting the condensing unit to all the control cabinets through the second communication port.

[0039] For further information, see Figure 3 , Figure 3The schematic diagram of the structure of the third refrigeration device provided by the embodiment of the present application, n air coolers are distributed in N cold storages, and the refrigeration device also includes n control cabinets and N condensing units. The control cabinet 1 and the control cabinet 2 are connected through the first communication port to form the first first communication link, the control cabinet 3 and the control cabinet 4 are connected through the first communication port to form the second first communication link, and the control cabinet n-1 and the control cabinet n are connected through the first communication port to form the Nth first communication link, and there is no connection between different first communication links. The refrigeration device is provided with N condensing units, and the refrigeration device is provided with N second communication links. The i-th second communication link is a link formed by connecting the condensing unit through the second communication port with multiple control cabinets corresponding to the i-th air cooler combination. The control cabinet 1, the control cabinet 2 and the condensing unit 1 are connected through the second communication port to form the first second communication link, the control cabinet 3, the control cabinet 4 and the condensing unit 2 are connected through the second communication port to form the second second communication link, ..., the control cabinet n-1, the control cabinet n and the condensing unit N are connected through the second communication port to form the Nth second communication link.

[0040] As for Figure 1 Further introduction to the corresponding embodiment, the above-mentioned refrigeration device includes M air coolers and M control cabinets, M>1, and all the air coolers are arranged in the same cold storage; the j-th control cabinet is connected to the j+1-th control cabinet through the first communication port, 1≤j<M.

[0041] If the refrigeration device is provided with one of the condensing units, the refrigeration device is provided with one of the second communication links, and the second communication link is a link formed by connecting the condensing unit with all of the control cabinets via the second communication port.

[0042] See also Figure 4 , Figure 4 This is a schematic diagram of the structure of the fourth refrigeration device provided in the embodiment of the present application, wherein the refrigeration device is provided with M condensing units, and the jth condensing unit is connected to the jth air cooler through a pipeline; the refrigeration device is provided with M second communication links, and the jth second communication link is a link formed by connecting the jth condensing unit to the jth air cooler through the second communication port. Control cabinet 1, control cabinet 2, ..., control cabinet M are connected in sequence through the first communication port to form a first communication circuit, control cabinet 1 and condensing unit 1 are connected through the second communication port to form the first second communication link, control cabinet 2 and condensing unit 2 are connected through the second communication port to form the second second communication link, ..., control cabinet M and condensing unit M are connected through the second communication port to form the Mth second communication link.

[0043] The process described in the above embodiment is explained below through an embodiment in actual application.

[0044] In the related art, there are several ways to control the air cooler and the condensing unit:

[0045] Method 1: The thermostat controls the start and stop of the air cooler, and the pressure switch or the start and stop signal from the air cooler controls the start and stop of the condensing unit. The disadvantage of the above method 1 is that the internal and external units are controlled independently, and the external unit does not have the ability to automatically adjust the operating state according to the temperature of the internal unit.

[0046] Method 2: The condensing unit has a built-in control panel, and the air cooler is controlled by the condensing unit. The disadvantage of the above method 2 is that the built-in control panel of the condensing unit has limited ports, and it is impossible to use one condensing unit with multiple air coolers.

[0047] Method 3: The control box controls the start and stop of a set of condensing units and air coolers at the same time. The disadvantage of the above method 3 is that the control cabinet only integrates the control logic of a single system, and there is a lack of joint control function between control cabinets.

[0048] Method 4: A third-party controller specially produces a joint control system based on the project situation. The disadvantage of the above method 4 is that it is not universal and has a high investment cost.

[0049] In view of the technical problems existing in the above-mentioned related technologies, this embodiment provides a universal refrigeration device design solution, which can realize the linkage control of the air cooler and the condensing unit in various application scenarios such as multiple units and multiple cold storages.

[0050] The refrigeration device provided in this embodiment includes a control cabinet, an air cooler and a condensing unit.

[0051] The control cabinet is an electrical component used to control the air cooler. The control cabinet has the basic control logic for controlling the refrigeration operation and defrosting operation of an air cooler. The control cabinet can independently complete the refrigeration operation control and defrosting control of an air cooler, and can accept the control command of the host. The control cabinet has the attributes of the host / auxiliary machine. When the control cabinet is set as an auxiliary machine, only the basic control logic is enabled; when the control cabinet is set as the host, the basic control logic and the control logic as the host will be enabled at the same time. The control cabinet has the attributes of the common unit / standby unit. When the control cabinet is set as a common unit, the unit automatically controls the on / off of the unit according to the real-time warehouse temperature and the set warehouse temperature; when the control cabinet is set as a standby unit, the unit only controls the on / off of the unit according to the real-time warehouse temperature and the set warehouse temperature when receiving the standby unit start command sent by the host. Since the control relationship between the control cabinet and the air cooler corresponds one to one, the state of the air cooler described in this embodiment is also the target state of controlling the air cooler. There is no controller in the air cooler, and the actions of all components of the air cooler can be directly controlled through the output port of the control cabinet. The condensing unit contains a controller. The condensing unit has the logic to independently control the operation of its own components, and the condensing unit can communicate with the control cabinet.

[0052] In this embodiment, a first communication link can be formed between control cabinets, and a second communication link can be formed between control cabinets and condensing units. This embodiment does not limit the number of first communication links and second communication links. Therefore, for different scenarios, control cabinets and condensing units can be wired and matched according to preset principles to form a plurality of first communication links and a plurality of second communication links, thereby realizing the functions of the first communication link and the second communication link. The condensing unit has the ability to control its own equipment.

[0053] The above preset principles are as follows:

[0054] Principle 1: One control cabinet controls one air cooler;

[0055] Principle 2: The control cabinets corresponding to all air coolers in a cold storage are connected through the first communication port of the control cabinet to form the first communication link, and one control cabinet is the host and the other control cabinets are auxiliary machines;

[0056] Principle 3: The condensing unit in a refrigeration system and the control cabinets corresponding to all the air coolers are connected through the second communication port to form a second communication link, with the condensing unit as the main unit and the others as auxiliary units.

[0057] The first communication link is obtained by connecting the control cabinets in sequence through the first communication port. In the first communication link, one control cabinet is required to be the host, and the others are auxiliary machines. The host realizes the function of the first communication link by obtaining the temperature, operation mode, fault and other information of the auxiliary machines. The control cabinet has an output port for controlling all components of one air cooler, which is used to control one air cooler, or control multiple air coolers that are turned on and off at the same time. The second communication link is obtained by connecting the second communication port of the control cabinet with the second communication port of the condensing unit. In the second communication link, the condensing unit is the host, and all control cabinets are auxiliary machines. The condensing unit realizes the function of the second communication link by obtaining the temperature, operation mode, fault and other information of the auxiliary machines. The first communication link is relatively independent from the second communication link. A control cabinet belongs to both a first communication link and a second communication link.

[0058] See also Figure 5 , Figure 5 A structural schematic diagram of the fifth refrigeration device provided in an embodiment of the present application, 501 represents a cold storage, 502 represents a first air cooler, 503 represents a second air cooler, 504 represents a first control cabinet, 505 represents a second control cabinet, 506 represents an air cooler connecting line, 507 represents a first communication port of the control cabinet, 508 represents a second communication port of the control cabinet, 509 represents a refrigeration system connecting pipe, 510 represents a communication line, 511 represents a second communication port of a condensing unit, and 512 represents a condensing unit.

[0059] In this embodiment, the connection scheme when a single condensing unit is matched with a single cold storage is as follows: Figure 5 As shown, the first control cabinet controls the action of the electrical components inside the first air cooler, such as the motor, defrost electric heater, liquid pipe solenoid valve, etc., through the air cooler connection line. Similarly, the second control cabinet controls the action of the electrical components inside the first air cooler through the air cooler connection line. The first control cabinet and the second control cabinet corresponding to the two air coolers in the cold storage are connected through the first communication port of the control cabinet to form a first communication link. The condensing unit connected by the refrigeration system connecting pipe and the first and second air coolers are connected to the second communication port of the condensing unit through the second communication port of the control cabinet to form a second communication link. The first communication link includes two control cabinets, any one of which is the host and the other is the auxiliary. The host can affect the operation of the auxiliary, thereby realizing the function of the first communication link. The condensing unit in the second communication link is the host, and all control cabinets are auxiliary. The host obtains the information of the auxiliary, thereby realizing the function of the second communication link.

[0060] See also Figure 6 , Figure 6 This is a schematic diagram of the structure of the sixth refrigeration device provided in an embodiment of the present application, in which 601 represents a first cold storage, 602 represents a second cold storage, 603 represents a first air cooler, 604 represents a second air cooler, 605 represents a third air cooler, 606 represents a fourth air cooler, 607 represents a first control cabinet, 608 represents a second control cabinet, 609 represents a third control cabinet, 610 represents a fourth control cabinet, and 611 represents a condensing unit.

[0061] In this embodiment, the connection scheme when a single condensing unit matches multiple cold storages is as follows: Figure 6 As shown, the third control cabinet and the fourth control cabinet in the first cold storage are connected through their respective first communication ports to form a first communication link. The first control cabinet and the second control cabinet in the second cold storage are connected through their respective first communication ports to form another first communication link. The first to fourth control cabinets corresponding to the first to fourth air coolers in the condensing unit and its refrigeration system are connected through their respective second communication ports to form a second communication link.

[0062] See also Figure 7 , Figure 7 This is a schematic diagram of the structure of the seventh refrigeration device provided in an embodiment of the present application, in which 701 represents a first cold storage, 702 represents a first air cooler, 703 represents a second air cooler, 704 represents a third air cooler, 705 represents a first control cabinet, 706 represents a second control cabinet, 707 represents a third control cabinet, 708 represents a first condensing unit, 709 represents a second condensing unit, and 710 represents a third condensing unit.

[0063] In this embodiment, the network connection method when multiple condensing units are matched with a single cold storage is as follows: Figure 7 As shown, the first control cabinet, the second control cabinet and the third control cabinet in the first cold storage are connected through their respective first communication ports to form a first communication link. The first condensing unit and the first control cabinet corresponding to the first cold air machine in its refrigeration system are connected through the second communication port to form a second communication link. The second condensing unit and the second control cabinet corresponding to the second cold air machine in its refrigeration system are connected through the second communication port to form another second communication link. The third condensing unit and the third control cabinet corresponding to the third cold air machine in its refrigeration system are connected through the second communication port to form another second communication link.

[0064] The joint control method of this embodiment is flexible and universal, and the number of air coolers and condensing units in the joint control system is not limited, and it can adapt to various scenarios through different configuration forms. The above refrigeration device can realize the joint control function of various application scenarios such as multiple units and multiple cold storages.

[0065] The first communication link function (ie, the first communication network function) includes but is not limited to a rotation defrost function, an intelligent standby function, a rapid cooling function, and a storage temperature sharing function.

[0066] The rotation defrost function is suitable for the situation where there are multiple air coolers in a cold storage. This function is used to prevent the air coolers in the same cold storage from entering the defrost mode at the same time, which would cause the storage temperature to rise, thereby maintaining a stable and reliable storage temperature.

[0067] The implementation process of the rotation defrost function is as follows: the host obtains the system status of the air coolers corresponding to all control cabinets in the first communication link, and counts the number of air coolers n currently in the defrost state; if n is greater than or equal to n_set, a command prohibiting entry into the defrost working state is issued to the control cabinets in the first communication link; if n is less than n_set, a command allowing entry into the defrost working state is issued to the control cabinets in the first communication link. n_set is the pre-set number of air coolers allowed to enter the defrost working state at the same time.

[0068] The intelligent backup function is suitable for the situation where there is a backup refrigeration system in a cold storage. Figure 7 Taking the corresponding refrigeration device as an example, the first and second air coolers can be set as common units, and the third air cooler can be set as a standby unit. When any common unit fails, the standby unit is automatically activated.

[0069] The implementation process of the intelligent standby function is as follows: the host obtains the information of all units in real time, and counts the number A of units in the current fault shutdown state; determines whether the number of enabled standby units is greater than or equal to A. If so, enters the step of the host obtaining the information of all units in real time; if not, enables the passive units to make the number of enabled standby units equal to A.

[0070] The rapid cooling function is suitable for a cold storage with a backup refrigeration system. Figure 7 Taking the corresponding refrigeration device as an example, the first and second air coolers can be set as common units, and the third air cooler can be set as a standby unit. When the host finds that the current warehouse temperature is much higher than the set warehouse temperature, the standby unit is automatically activated to help lower the warehouse temperature, thereby maintaining the stability of the warehouse temperature.

[0071] The implementation process of the rapid cooling function is as follows: the host obtains the set warehouse temperature and real-time warehouse temperature of all units; determines whether the real-time average warehouse temperature is greater than the set warehouse temperature + K, if so, the standby unit is enabled, if not, the host enters the step of obtaining the set warehouse temperature and real-time warehouse temperature of all units; determines whether the real-time average warehouse temperature is less than the set warehouse temperature + M, if so, the standby unit is disabled, if not, the standby unit is enabled. K and M are the preset temperature difference values ​​for enabling / disabling the rapid cooling function.

[0072] The storage temperature sharing function is suitable for applications where there are multiple air coolers in a cold storage. When the storage temperature sensor of any air cooler fails, the storage temperature data of other air coolers will be automatically obtained for logic control to maintain the continued operation of the failed unit and prevent the storage temperature from rising. At the same time, an alarm will be issued to notify the customer for maintenance.

[0073] The implementation process of the warehouse temperature sharing function is as follows: the host obtains the warehouse temperature data of all units without warehouse temperature sensor failure, calculates the average warehouse temperature T, and determines whether there is a unit with a warehouse temperature sensor failure. If so, the host sends the T value to the faulty unit for the logic control of the unit.

[0074] The second communication link function (ie, the second communication network function) includes but is not limited to a switch linkage function, a load linkage function, and an alarm linkage function.

[0075] By enabling the switch linkage function, the condensing unit can automatically switch the start and stop status of the condensing unit according to the start and stop status of the air cooler.

[0076] The implementation process of the switch linkage function is as follows: the condensing unit obtains the operating status of all air coolers, determines whether the number of air coolers in the cooling operation state is greater than 0, and if so, controls the condensing unit to start up, if not, controls the condensing unit to shut down.

[0077] By enabling the load linkage function, the condensing unit can intelligently control the load output of the condensing unit according to the operating status of the air cooler and the storage temperature.

[0078] The implementation process of the load linkage function is as follows: the condensing unit obtains the target storage temperature value of all air coolers in the refrigeration operation state, determines the lowest target storage temperature = T_min, and the target operation low pressure Ps_tar = P(T_min); determines whether the current low pressure Ps is greater than Ps_tar, if so, increases the load output, otherwise maintains the current load output. P(T_min) refers to the target low pressure value calculated based on T_min, and the calculation method can be calculated using a preset formula.

[0079] By enabling the alarm linkage function, when a condensing unit fails, it can be sent to the control cabinet for display; when the outdoor unit fails for a certain period of time, a fan shutdown command is sent to the air cooler to prevent power waste of invalid equipment in the cold storage.

[0080] The implementation process of the alarm linkage function is as follows: Control the operation of the condensing unit to determine whether the condensing unit has a fault. If so, send the fault information to the control cabinet for fault display. Determine whether the downtime of the condensing unit fault is greater than t. If so, send a fault signal to the control cabinet so that the control cabinet stops the fan operation of the air cooler according to the signal. Determine whether the condensing unit fault is restored. If so, send a recovery signal to the control cabinet so that the control cabinet resumes normal operation. t is the preset fault duration judgment value. When this time is met, the air cooler is forced to stop and will be reactivated after the fault is restored.

[0081] Because the situation is complicated and cannot be listed one by one for explanation, those skilled in the art should be aware that there may be many examples based on the basic principles provided by this application combined with actual conditions, and all of them should be within the scope of protection of this application without sufficient creative work.

[0082] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0083] Specific examples are used herein to illustrate the principles and implementation methods of the present application, and the description of the above embodiments is only used to help understand the scheme and its core ideas of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A refrigeration device, characterized in that: include: Multiple air coolers, a first communication link and a second communication link; the first communication link includes multiple control cabinets connected through a first communication port, and the second communication link includes the control cabinet and a condensing unit connected through a second communication port; the first communication link is a link for interaction between the control cabinets, and the second communication link is a link for interaction between the condensing unit and the control cabinet; the control cabinets correspond to the air coolers one by one, and each control cabinet is connected to the corresponding air cooler through an air cooler connecting line; the condensing unit is connected to the air cooler through a pipeline.

2. The refrigeration device according to claim 1, characterized in that: The refrigeration device comprises N air cooler assemblies, each of which comprises at least two air coolers, and the air coolers in the same air cooler assembly are arranged in the same cold storage; N>1; The refrigeration device includes N first communication links, the i-th first communication link is a link formed by connecting multiple control cabinets corresponding to the i-th air cooler combination through the first communication port, 1≤i≤N.

3. The refrigeration device according to claim 2, characterized in that: The refrigeration device is provided with one condensing unit, and the refrigeration device is provided with one second communication link, wherein the second communication link is a link formed by connecting the condensing unit with all the control cabinets via a second communication port.

4. The refrigeration device according to claim 2, characterized in that: The refrigeration device is provided with N condensing units, and the condensing units are connected to corresponding air coolers through pipelines; The refrigeration device is provided with N second communication links, and the i-th second communication link is a link formed by connecting the condensing unit with multiple control cabinets corresponding to the i-th air cooler combination through the second communication port.

5. The refrigeration device according to claim 1, characterized in that: The refrigeration device includes M air coolers and M control cabinets, M>1, and all the air coolers are arranged in the same cold storage; the jth control cabinet is connected to the j+1th control cabinet through the first communication port, 1≤j<M.

6. The refrigeration device according to claim 5, characterized in that: The refrigeration device is provided with one condensing unit, and the refrigeration device is provided with one second communication link, wherein the second communication link is a link formed by connecting the condensing unit with all the control cabinets via a second communication port.

7. The refrigeration device according to claim 5, characterized in that: The refrigeration device is provided with M condensing units, and the j-th condensing unit is connected to the j-th air cooler through a pipeline; The refrigeration device is provided with M second communication links, and the jth second communication link is a link formed by connecting the jth condensing unit with the jth air cooler via the second communication port.

8. The refrigeration device according to claim 1, characterized in that: The control cabinet is connected to a host device, and is used to control the air cooler according to a control instruction issued by the host device.

9. The refrigeration device according to claim 1, characterized in that: Also includes: The display connected to the control cabinet is used to display the information collected by the control cabinet.

10. The refrigeration device according to claim 1, characterized in that: The condensing unit is provided with a controller.

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