A control method, device and equipment of a multi-cycle precision air conditioner and a storage medium

Abstract

The application provides a control method, device and equipment of a multi-cycle precision air conditioner and a storage medium, and is characterized in that the method comprises the following steps: obtaining an ambient temperature, controlling a unit to operate in an operating mode corresponding to the ambient temperature; determining whether the current operating mode has a fault; if the operating mode has a fault, shielding the operating mode with the fault, determining a usable operating mode according to the ambient temperature and a limit operating temperature range of the remaining operating modes; and switching the operating mode to the usable operating mode under the ambient temperature. After the unit operates in the operating mode selected according to the current ambient temperature, if the operating mode has a fault, the current operating mode is shielded, and an operating mode that can operate is selected from the remaining operating modes according to the limit operating temperature of each operating mode to switch the operating mode, so that when the remaining operating modes have an operating mode that can operate under the current ambient temperature, the unit can still maintain an operating state, thereby continuously cooling.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of precise air conditioning control, and particularly relates to a control method, device and equipment of a multi-cycle precise air conditioner and a storage medium. BACKGROUND

[0002] Machine room air conditioners are required to be able to cool all year round and run uninterruptedly for 24 hours a day, and therefore, the reliability and high energy efficiency of precise air conditioners are increasingly valued. In the actual engineering application of data center precise air conditioners, in order to improve energy efficiency, a fluorine pump and a compressor combined refrigeration system is usually used to take different ways to cool at different ambient temperatures, thereby ensuring energy consumption.

[0003] In a fluorine pump double-cycle precise air conditioner, because the components and valve bodies involved in different modes are different, when a problem occurs in a related component independently used in a certain mode, the unit cannot be smoothly operated in the mode and is shut down, which has a great impact on data centers that continuously generate heat, and needs to be further improved. SUMMARY

[0004] The main purpose of the present application is to provide a control method, device, equipment and storage medium of a multi-cycle precise air conditioner, which aims to solve the problem that the unit is shut down and cannot cool when the current operating mode in the multi-cycle precise air conditioner fails.

[0005] In a first aspect, the present application provides a control method of a multi-cycle precise air conditioner, which adopts the following technical scheme:

[0006] A control method of a multi-cycle precise air conditioner, comprising:

[0007] Obtaining an ambient temperature, and controlling the unit to operate in an operating mode corresponding to the ambient temperature;

[0008] Judging whether the current operating mode has a fault;

[0009] If there is a fault, shielding the operating mode with the fault, and determining a usable operating mode according to the ambient temperature and a limit operating temperature range of the remaining operating modes;

[0010] Switching the operating mode to the usable operating mode at the ambient temperature.

[0011] In some embodiments, the step of switching the operating mode to the usable operating mode at the ambient temperature comprises the following steps:

[0012] If there are multiple usable operating modes, switching the operating mode to any usable operating mode.

[0013] In some embodiments, the switching the operation mode to the operation mode available at the ambient temperature comprises the following steps:

[0014] If there are multiple available operation modes, the operation mode is switched to the operation mode whose limit operation temperature range is farthest from the ambient temperature.

[0015] In some embodiments, the switching the operation mode to the operation mode available at the ambient temperature comprises the following steps:

[0016] If there are multiple available operation modes, the operation mode is switched to the operation mode with the lowest energy consumption.

[0017] In some embodiments, if there is a fault, after the available operation modes are determined according to the ambient temperature and the limit operation temperature range of the remaining operation modes, the method further comprises the following steps:

[0018] If there is no available operation mode, the machine is stopped.

[0019] In some embodiments, when the machine is started, the operation modes in the machine are restored.

[0020] In some embodiments, the determining whether the current operation mode has a fault comprises the following steps:

[0021] If the current operation mode is the fluorine pump mode in which the fluorine pump operates independently, the opening degree of the electronic expansion valve, the pre-pump pressure of the fluorine pump, the post-pump pressure of the fluorine pump, and the lift alarm signal of the fluorine pump are obtained.

[0022] If the opening degree of the electronic expansion valve is at the maximum opening degree for a first set time, the difference between the post-pump pressure and the pre-pump pressure is greater than a set difference HP2-LP2>B, and the refrigerant pressure continues to decrease after being sent out from the fluorine pump, it is determined that the liquid circuit electromagnetic valve operating in the fluorine pump mode has a fault.

[0023] Alternatively, if the number of times that the lift of the fluorine pump reaches a set lift within a second set time is greater than a set number of times, it is determined that the liquid circuit electromagnetic valve operating in the fluorine pump mode has a fault.

[0024] In a second aspect, the present application further provides a control device of a multi-cycle precision air conditioner, which adopts the following technical scheme:

[0025] A control device of a multi-cycle precision air conditioner, which comprises:

[0026] An adjusting module configured to obtain an ambient temperature and control the machine to operate in an operation mode corresponding to the ambient temperature;

[0027] A judging module judges whether the current operation mode has a fault; if there is a fault, the faulty operation mode is shielded, and according to the ambient temperature and the limit operation temperature range of the remaining operation modes, a usable operation mode is determined;

[0028] A switching module switches the operation mode to the operation mode that can be used at the ambient temperature.

[0029] In a third aspect, the present application further provides a control device of a multi-cycle precision air conditioner, which adopts the following technical scheme:

[0030] A control device of a multi-cycle precision air conditioner, comprising a processor, a memory, and a control program of a multi-cycle precision air conditioner stored in the memory and executable by the processor, wherein when the control program of a multi-cycle precision air conditioner is executed by the processor, the steps of the control method of a multi-cycle precision air conditioner are implemented.

[0031] In a fourth aspect, the present application further provides a storage medium, which adopts the following technical scheme:

[0032] A storage medium, characterized in that the storage medium stores a control program of a multi-cycle precision air conditioner, wherein when the control program of a multi-cycle precision air conditioner is executed by a processor, the steps of the control method of a multi-cycle precision air conditioner are implemented.

[0033] The control method, device, equipment and storage medium of a multi-cycle precision air conditioner provided by the present application have the following beneficial effects:

[0034] The control method, device, equipment and storage medium of a multi-cycle precision air conditioner provided by the present application have the following beneficial effects: BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 The figure is a hardware structure diagram of the control device of a multi-cycle precision air conditioner involved in the embodiment scheme of the present application.

[0036] Figure 2 The figure is a flowchart of the first embodiment of the control method of a multi-cycle precision air conditioner.

[0037] Figure 3The figure is a function module schematic diagram of the first embodiment of the control device of the multi-cycle precision air conditioner.

[0038] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0039] It should be understood that the specific embodiments described herein are merely intended to explain the present application and are not intended to limit the present application.

[0040] The machine room air conditioner requires cooling all year round and uninterrupted operation for 24 hours a day, therefore, the reliability and high energy efficiency of the precision air conditioner are increasingly valued. In the actual engineering application of the data center precision air conditioner, in order to improve the energy efficiency, a fluorine pump and compressor combined refrigeration system is usually used to take different ways to cool at different ambient temperatures, and to ensure energy consumption.

[0041] In the fluorine pump double-cycle precision air conditioner, due to the differences in the components and valve bodies involved in different modes, when the related components used independently in a certain operating mode have problems, the unit cannot smoothly run in that mode and stops, which has a great impact on the data center that continuously generates heat, and needs to be further improved.

[0042] Based on the above problems, the present application provides a control method, device and equipment of a multi-cycle precision air conditioner and a storage medium, the invention points of which are that after the unit is operated according to the current environmental temperature to select the operating mode, if the operating mode fails, the current operating mode will be shielded, and the limit operating temperature of each operating mode will be selected from the remaining operating modes to switch to the mode that can operate, so that when there is a mode that can operate in the current environmental temperature in the remaining operating modes, the unit can still maintain the operating state, thereby continuously cooling, and avoiding the problem that the unit as a whole stops and cannot cool the data center due to the failure of the current operating mode itself in the related technology.

[0043] In a first aspect, the embodiments of the present application provide a control device of a multi-cycle precision air conditioner, which can be a personal computer (PC), a notebook computer, a server, etc. with data processing function.

[0044] Reference Figure 1 , Figure 1Fig. 1 is a schematic diagram of a hardware structure of a control device of a multi-cycle precision air conditioner according to an embodiment of the present application. The control device of the multi-cycle precision air conditioner according to the embodiment of the present application can include a processor 1001 (for example, a central processing unit, CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. The communication bus 1002 is used to realize the connection and communication among the components; the user interface 1003 can include a display and an input unit such as a keyboard; the network interface 1004 can optionally include a standard wired interface, a wireless interface (for example, a WI-FI interface), and the memory 1005 can be a high-speed random access memory (RAM) or a stable memory (for example, a disk memory), and the memory 1005 can optionally be a storage device independent of the processor 1001. Those skilled in the art can understand that the hardware structure shown in Fig. 1 does not constitute a limitation on the present application, and can include more or fewer components than those shown in the figure, or combine certain components, or arrange different components. Figure 1

[0045] With reference to the foregoing description of the control method of the multi-cycle precision air conditioner, the control device of the multi-cycle precision air conditioner can be configured to execute the control method of the multi-cycle precision air conditioner. Figure 1 Figure 1 The memory 1005 as a computer storage medium in the embodiment of the present application can include an operating system, a network communication module, a user interface module, and a control program of the multi-cycle precision air conditioner. The processor 1001 can call the control program of the multi-cycle precision air conditioner stored in the memory 1005, and execute the control method of the multi-cycle precision air conditioner provided by the embodiment of the present application.

[0046] In a second aspect, the embodiment of the present application provides a control method of a multi-cycle precision air conditioner.

[0047] With reference to the foregoing description of the control method of the multi-cycle precision air conditioner, the control device of the multi-cycle precision air conditioner can be configured to execute the control method of the multi-cycle precision air conditioner. Figure 2 The control method of the multi-cycle precision air conditioner includes the following steps.

[0048] S100, acquiring an ambient temperature, and controlling the unit to operate in an operating mode corresponding to the ambient temperature;

[0049] S200, determining whether the current operating mode has a fault;

[0050] S300, if there is a fault, shielding the operating mode with the fault, and determining a usable operating mode according to the ambient temperature and a limit operating temperature range of the remaining operating modes;

[0051] ​​S400, switch the operation mode to an operation mode available at the ambient temperature.

[0052] Specifically, after the unit is started, the unit will select the most appropriate operation mode according to the ambient temperature through step S100, and after running, the unit will continuously perform step S200 to determine whether the current operation mode has a fault. The specific determination process is different in different embodiments, for example, whether the current fluorine pump mode is running normally is determined by the operating parameters of the related equipment, such as the pre-pump pressure, the post-pump pressure, and the lift of the fluorine pump, or whether there is a fault is determined by manual judgment, which is not limited. After it is determined in step S200 that there is a fault, it is determined in step S300 whether the remaining operation modes can be run at the current ambient temperature, and if so, one of the available operation modes is switched through step S400. It is worth noting that the definition of the available operation mode is that it can produce a refrigeration effect at the current ambient temperature and meet the operating conditions of the equipment in the operation mode. At the same time, the running stage of the entire unit, step S200 will continue to run, so that the unit can smoothly switch modes and continue to cool when the current operation mode fails and there is an available operation mode.

[0053] In this way, after the unit selects an operation mode according to the current ambient temperature, if the operation mode fails, the current operation mode is shielded, and the remaining operation modes are selected according to the limit operating temperature of each operation mode to switch to the mode that can run, so that when there is a mode in the remaining operation modes that can run at the current ambient temperature, the unit can still maintain the running state, thereby continuously cooling, and avoiding the problem that the unit as a whole stops running and cannot cool the data center due to the failure of the current operation mode in the related art.

[0054] Further, in some embodiments, step S400, switching the operation mode to an operation mode available at the ambient temperature, comprises the following steps:

[0055] S410, if there are multiple available operation modes, switching the operation mode to any available operation mode.

[0056] In another embodiment, step S400, switching the operation mode to an operation mode available at the ambient temperature, comprises the following steps:

[0057] S410, if there are multiple available operation modes, switching the operation mode to the operation mode in the available operation modes whose limit operating temperature range is farthest from the ambient temperature.

[0058] In this way, the running mode after switching can be kept in a state within a large ambient temperature range, thereby effectively ensuring that the unit can still run for a long time in the subsequent process after a fault occurs.

[0059] In some other embodiments, the step S400 of switching the running mode to a running mode available at the ambient temperature comprises the following steps:

[0060] S410, if there are multiple available running modes, switching the running mode to the running mode with the lowest energy consumption among the available running modes.

[0061] In this way, after a fault in the current running mode, the unit can still select the running mode with the lowest energy consumption from the remaining available running modes to continue refrigeration, thereby ensuring that the energy consumption level of the unit in the subsequent process is not too high. In other embodiments, the running mode with the best refrigeration effect can also be selected as the selection condition.

[0062] In this embodiment, the unit running mode only has a fluorine pump mode and a compressor mode. Therefore, after the fluorine pump mode or the compressor mode fails due to component failure, it is determined whether the other mode can run at the current ambient temperature. If it can run, it is switched to the other running mode and continues to run in the other mode in the subsequent process. Specifically, when the fluorine pump mode has a running fault, it is determined whether the current ambient temperature is within the limit running temperature range of the compressor mode. If it is within the limit running temperature range of the compressor mode, it is switched to the compressor mode for running. At the same time, since the lower limit value of the unit with respect to the ambient temperature is adjusted to the lowest running ambient temperature of the compressor in the subsequent running process, the unit is controlled to run or shut down according to whether the ambient temperature is within the limit running temperature range of the compressor mode in the subsequent running process.

[0063] In a fluorine pump-compressor dual-cycle precision air conditioner, the liquid path electromagnetic valve in the dual-cycle system is generally a normally closed valve body. Under the actual installation conditions, the liquid path electromagnetic valve is prone to the phenomenon of not being able to be opened. For example, the coil falls off, the coil plug is inserted incorrectly, the electromagnetic valve main board voltage is insufficient, the electromagnetic valve coil is stuck, the electromagnetic valve body is stuck due to aging of the rubber gasket, and other abnormal conditions. This embodiment is aimed at the situation of the liquid path electromagnetic valve and the electronic expansion valve combination valve in the fluorine pump mode in the dual cycle. In step S200, targeted fault detection and processing control are performed, including the following steps:

[0064] S210, if the current running mode is the fluorine pump mode for independent running of the fluorine pump, obtaining the opening of the electronic expansion valve, the pre-pump pressure of the fluorine pump, the post-pump pressure of the fluorine pump, and the head warning signal of the fluorine pump;

[0065] S220, if the opening degree of the electronic expansion valve is at the maximum opening degree for a first set time, the difference between the pump post-pressure and the pump pre-pressure is greater than a set difference, and the refrigerant pressure continues to decrease after being pumped out from the fluorine pump, it is determined that the liquid circuit electromagnetic valve operating in the fluorine pump mode has a fault;

[0066] Alternatively, the number of times that the head of the fluorine pump reaches the set head within a second set time is greater than a set number, and it is determined that the liquid circuit electromagnetic valve operating in the fluorine pump mode has a fault.

[0067] When the opening degree of the electronic expansion valve is at the maximum opening degree for a first set time, the difference between the pump post-pressure and the pump pre-pressure is greater than a set difference, which means that the liquid circuit electromagnetic valve opening degree or the sensor for detecting the refrigerant pressure or the liquid circuit electromagnetic valve has a possible fault. At the same time, when it is detected that the refrigerant pressure continues to decrease after being pumped out from the fluorine pump, it is indicated that the multiple sensors for detecting the refrigerant pressure have no obstacles, i.e., it means that the liquid circuit electromagnetic valve has a fault, resulting in that the operating pressure of the unit in the fluorine pump mode is too large.

[0068] In this way, it is realized that whether the liquid circuit electromagnetic valve has a fault when the unit operates in the fluorine pump mode can be effectively monitored, and then when the valve body has a fault, it is timely judged and identified through the data of the system itself, so as to ensure no shutdown and ensure the continuous operation of the equipment. In the digital economy era, this method can effectively reduce the operation and maintenance cost of the machine room and the potential reliability risk.

[0069] Further, in some preferred embodiments, after the step of shielding the operation mode according to the environmental temperature and the limit operation temperature range of the remaining operation mode to determine the available operation mode if there is a fault, the following steps are included:

[0070] If there is no available operation mode, stop.

[0071] In this way, it is realized that the machine directly stops when there is no available operation mode, and at the same time, in this embodiment, a fault shutdown signal is output to the outside when the machine stops, so as to remind the relevant personnel to learn the current state of the data center precision air conditioner in time, so as to repair as soon as possible.

[0072] In addition, in this embodiment, when the fluorine pump mode or the compressor mode fails and the other operation mode can operate, the unit switches to the other operation mode at the same time, and outputs a fault prompt signal to the outside, so as to remind the relevant personnel, and then the relevant personnel can arrange the repair time after learning, and at the same time, since the unit can still operate smoothly to cool at this time, it is not necessary to worry that the unit is in a shutdown state and cannot cool the data center during this period.

[0073] Further, in some preferred embodiments, when the machine set is started, the various operation modes in the machine set are restored. Specifically, when the machine set is started, the preset various operation modes in the machine set are all in a selectable state, and then, after the machine set is stopped for maintenance due to a fault, the repaired operation mode can be restored when the machine set is next started, so that the machine set can still select the most suitable operation mode corresponding to the ambient temperature.

[0074] In a third aspect, the embodiments of the present application further provide a control device of a multi-cycle precision air conditioner.

[0075] Referring to Figure 3 , a schematic diagram of function modules of the first embodiment of the control device of the multi-cycle precision air conditioner.

[0076] In this embodiment, the control device of the multi-cycle precision air conditioner comprises:

[0077] An adjusting module configured to acquire an ambient temperature and control the machine set to operate in an operation mode corresponding to the ambient temperature;

[0078] A judging module configured to judge whether the current operation mode has a fault; if the current operation mode has a fault, shield the operation mode with the fault and determine a usable operation mode according to the ambient temperature and the limit operation temperature range of the remaining operation modes;

[0079] A switching module configured to switch the operation mode to the usable operation mode under the ambient temperature.

[0080] In the control device of the multi-cycle precision air conditioner, the functions of each module correspond to the steps in the control method of the multi-cycle precision air conditioner, and the functions and implementation processes will not be described here.

[0081] In a fourth aspect, the embodiments of the present application further provide a storage medium.

[0082] The control program of the multi-cycle precision air conditioner is stored on the storage medium, and when the control program of the multi-cycle precision air conditioner is executed by a processor, the steps of the control method of the multi-cycle precision air conditioner are implemented.

[0083] The method implemented when the control program of the multi-cycle precision air conditioner is executed can refer to the embodiments of the control method of the multi-cycle precision air conditioner, and will not be described here.

[0084] The control method, device, equipment and storage medium of the multi-cycle precision air conditioner provided by the present application have the following working principles and advantages:

[0085] After the unit is started, the unit will select the most appropriate operation mode according to the ambient temperature, and after operation, the unit will continuously determine whether the current operation mode has a fault. The specific determination process is that after determining that there is a fault, it is determined whether the remaining operation modes can be operated at the current ambient temperature, and if so, one of the available operation modes is switched. It should be noted that the definition of the available operation mode is that it can produce a refrigeration effect at the current ambient temperature and meet the operating conditions of each device in the operation mode. At the same time, the unit is in the running stage, and the fault determination process will continue to be carried out, so that when the current operation mode fails and there is an available operation mode, the unit can smoothly switch modes and continue to cool.

[0086] After the unit is started, the unit will select the most appropriate operation mode according to the ambient temperature, and after operation, the unit will continuously determine whether the current operation mode has a fault. The specific determination process is that after determining that there is a fault, it is determined whether the remaining operation modes can be operated at the current ambient temperature, and if so, one of the available operation modes is switched. It should be noted that the definition of the available operation mode is that it can produce a refrigeration effect at the current ambient temperature and meet the operating conditions of each device in the operation mode. At the same time, the unit is in the running stage, and the fault determination process will continue to be carried out, so that when the current operation mode fails and there is an available operation mode, the unit can smoothly switch modes and continue to cool.

[0087] It should be noted that in this document, the terms "comprise", "comprising", or any other variation thereof are intended to cover a non-exclusive inclusion, so that a process, method, article, or system that includes a list of elements not only includes those elements, but also includes additional elements not expressly listed, or inherent to such process, method, article, or system. Without more limitations, the element defined by the statement "comprises a" does not exclude the presence of additional identical elements in the process, method, article, or system that includes the element.

[0088] The above-mentioned embodiment numbers of the present application are only for description, and do not represent the advantages and disadvantages of the embodiments.

[0089] From the above description of the embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be realized by software and necessary general hardware platform, of course, they can also be realized by hardware, but in many cases, the former is a better embodiment. Based on such understanding, the technical solutions of the present application can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes a plurality of instructions for making a terminal device execute the method described in each embodiment of the present application.

[0090] The above merely describes the preferred embodiments of the present application, and is not intended to limit the patent scope of the present application, and any equivalent structure or equivalent process conversion, or direct or indirect application in the remaining related technical fields, which are made by using the content of the present application specification and drawings, are also included in the patent protection scope of the present application.

Claims

1. A control method for a multi-cycle precision air conditioner, characterized in that, It includes: The ambient temperature is obtained, and the unit is controlled to operate in the operating mode corresponding to the ambient temperature. Determine if there is a fault in the current operating mode; If a fault exists, the faulty operating mode is disabled, and the usable operating mode is determined based on the ambient temperature and the extreme operating temperature range of the remaining operating modes. Switch the operating mode to one that is usable at the ambient temperature; Switching the operating mode to an operating mode usable at the ambient temperature includes the following steps: If there are multiple available operating modes, switch to the operating mode with the largest extreme operating temperature range that is closest to the ambient temperature. Determining whether the current operating mode is faulty includes the following steps: If the current operating mode is the fluorine pump operating independently, obtain the opening degree of the electronic expansion valve, the pressure before the fluorine pump, the pressure after the fluorine pump, and the head alarm signal of the fluorine pump. If the electronic expansion valve remains at its maximum opening for a set time, the difference between the pressure after the pump and the pressure before the pump is greater than the set difference, and the refrigerant pressure continues to drop after being pumped out by the refrigerant pump, it is determined that the liquid circuit solenoid valve operating in the refrigerant pump mode is faulty. Alternatively, if the number of times the head of the fluorine pump reaches the set head within the second set time is greater than the set number, then the solenoid valve in the liquid circuit operating in fluorine pump mode is determined to be faulty.

2. The control method for a multi-cycle precision air conditioner as described in claim 1, characterized in that, If a fault exists, the fault-masking operating mode is disabled. After determining the usable operating mode based on the ambient temperature and the extreme operating temperature range of the remaining operating modes, the following steps are included: If no usable operating mode is available, shut down the system.

3. The control method for a multi-cycle precision air conditioner as described in claim 1, characterized in that, When the unit starts up, it restores all operating modes within the unit.

4. A control device for a multi-cycle precision air conditioner based on the control method of a multi-cycle precision air conditioner as described in any one of claims 1-3, characterized in that, It includes: The adjustment module is configured to acquire the ambient temperature and control the unit to operate in the operating mode corresponding to the ambient temperature. The judgment module determines whether there is a fault in the current operating mode; If a fault exists, the faulty operating mode is disabled, and the usable operating mode is determined based on the ambient temperature and the extreme operating temperature range of the remaining operating modes. The switching module switches the operating mode to an operating mode that can be used at the ambient temperature.

5. A control device for a multi-cycle precision air conditioner, characterized in that, The control device of the multi-cycle precision air conditioner includes a processor, a memory, and a control program for the multi-cycle precision air conditioner stored in the memory and executable by the processor, wherein when the control program for the multi-cycle precision air conditioner is executed by the processor, it implements the steps of the control method for the multi-cycle precision air conditioner as described in any one of claims 1 to 3.

6. A storage medium, characterized in that, The storage medium stores a control program for a multi-cycle precision air conditioner, wherein when the control program for the multi-cycle precision air conditioner is executed by a processor, it implements the steps of the control method for the multi-cycle precision air conditioner as described in any one of claims 1 to 3.

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