Method and device for controlling machine room air conditioner, machine room air conditioner and storage medium

Abstract

The application relates to the technical field of air conditioners, and discloses a method for controlling a computer room air conditioner, the computer room air conditioner comprising: a plurality of chilled water units; the method comprising: acquiring the inlet air temperature, the outlet air temperature and the running air damper of each chilled water unit; determining a target chilled water unit according to the inlet air temperature, the outlet air temperature and the running air damper; determining the emptying requirement of the target chilled water unit; and controlling the operation of the target chilled water unit according to the emptying requirement. In this way, the determination of the emptying requirement and the execution of the emptying action can be realized without making a large number of improvements to the structure of the chilled water unit, thereby greatly saving the cost. Moreover, the chilled water unit that needs to be emptied does not need to be manually checked and operated to be emptied, a large amount of manpower and material resources is saved, and the work efficiency is improved. The application further discloses a device for controlling a computer room air conditioner, a computer room air conditioner and a storage medium.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, for example to a method, apparatus, air conditioner and storage medium for controlling a computer room air conditioner. Background Technology

[0002] Chilled water chiller systems are widely used in data centers to cool the numerous electronic components within the data center. These systems use chilled water as their cooling source and require external chilled water units and piping, making the overall system large and complex. During initial construction and operation, internal liquids vaporize. This results in the accumulation of air or other non-condensable gases within the system, particularly in the pipes and heat exchangers. When this accumulation reaches a certain level, it can cause air blockage in the heat exchangers, affecting the overall cooling performance of the unit.

[0003] The related technology discloses a heat exchanger with an exhaust function, including a heat exchange chamber and several heat exchange pipes that run through the heat exchange chamber. One side of the heat exchange chamber is provided with a hot side inlet and a hot side outlet, and the other side of the heat exchange chamber is provided with a cold side inlet and a cold side outlet. Several partition plates are fixedly installed on the top of the heat exchange chamber, and a flow channel is formed between the partition plates. Exhaust holes are also provided on the partition plates, and an exhaust pipe is connected to the top of the heat exchange chamber.

[0004] In the process of implementing the embodiments of this disclosure, at least the following problems were found in the related art:

[0005] Related technologies avoid air blockage by improving the heat exchanger structure, but are costly.

[0006] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0007] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0008] This disclosure provides a method, apparatus, air conditioner, and storage medium for controlling a computer room air conditioner to reduce the cost of avoiding air blockage.

[0009] In some embodiments, the computer room air conditioner includes: multiple chilled water units; the method for controlling the computer room air conditioner includes: acquiring the inlet air temperature, outlet air temperature, and operating fan speed of each chilled water unit; determining a target chilled water unit based on the inlet air temperature, outlet air temperature, and operating fan speed; determining the venting requirement of the target chilled water unit; and controlling the operation of the target chilled water unit based on the venting requirement.

[0010] In some embodiments, the apparatus for controlling a computer room air conditioner includes a processor and a memory storing program instructions, the processor being configured to execute the aforementioned method for controlling a computer room air conditioner when the program instructions are executed.

[0011] In some embodiments, the computer room air conditioner includes: a computer room air conditioner body; and a device for controlling the computer room air conditioner as described above, which is installed on the computer room air conditioner body; wherein the computer room air conditioner body includes: multiple chilled water units.

[0012] In some embodiments, the storage medium stores program instructions that, when executed, perform the aforementioned method for controlling the computer room air conditioning.

[0013] The method, apparatus, air conditioner, and storage medium for controlling a computer room air conditioner provided in this disclosure can achieve the following technical effects:

[0014] By analyzing the inlet and outlet air temperatures of each chiller unit, the target chiller units—those that may require evacuation—are identified. The evacuation requirements of these target chiller units are then further determined to eliminate any interfering factors that might affect the evacuation decision. Based on these evacuation requirements, the operation of the target chiller units is controlled. This allows for automatic evacuation of the target chiller units when evacuation is required. This method eliminates the need for significant structural modifications to the chiller units, enabling the identification and execution of evacuation needs and greatly reducing costs. Furthermore, it eliminates the need for manual identification and evacuation of chiller units, saving considerable manpower and resources and improving work efficiency.

[0015] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0016] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0017] Figure 1 This is a schematic diagram of the structure of the computer room air conditioner provided in the embodiments of this disclosure;

[0018] Figure 2 This is a schematic diagram of a method for controlling a computer room air conditioner provided in an embodiment of this disclosure;

[0019] Figure 3 This is a schematic diagram of another method for controlling a computer room air conditioner provided in an embodiment of this disclosure;

[0020] Figure 4 This is a schematic diagram of another method for controlling a computer room air conditioner provided in an embodiment of this disclosure;

[0021] Figure 5 This is a schematic diagram of another method for controlling a computer room air conditioner provided in an embodiment of this disclosure;

[0022] Figure 6 This is a schematic diagram of another method for controlling a computer room air conditioner provided in an embodiment of this disclosure;

[0023] Figure 7 This is a schematic diagram of a device for controlling a computer room air conditioner provided in an embodiment of this disclosure;

[0024] Figure 8 This is a schematic diagram of another device for controlling a computer room air conditioner provided in an embodiment of this disclosure;

[0025] Figure 9 This is a schematic diagram of a computer room air conditioner provided in an embodiment of this disclosure.

[0026] Figure label:

[0027] 1. Main water supply pipeline; 2. Main return water pipeline; 3. Chilled water unit; 31. Heat exchanger; 32. Chilled water inlet pipe; 33. Chilled water outlet pipe; 34. First temperature sensor; 35. Second temperature sensor; 36. Flow regulating valve; 37. Drain valve; 38. Blower unit; 381. Fan. Detailed Implementation

[0028] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0029] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0030] Unless otherwise stated, the term "multiple" means two or more.

[0031] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0032] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0033] The term "correspondence" can refer to an association or binding relationship. The correspondence between A and B means that there is an association or binding relationship between A and B.

[0034] Combination Figure 1 As shown in the figure, this disclosure provides a data center air conditioner. The data center air conditioner includes a data center air conditioner body. The data center air conditioner body includes: a main water supply pipeline 1, a main return water pipeline 2, and multiple chilled water units 3. Each chilled water unit 3 includes: a heat exchanger 31, a chilled water inlet pipe 32, and a chilled water outlet pipe 33. The first end of the chilled water inlet pipe 32 is connected to the main water supply pipeline 1, and the second end is connected to the inlet of the corresponding heat exchanger 31. The first end of the chilled water outlet pipe 33 is connected to the main return water pipeline 2, and the second end is connected to the outlet of the corresponding heat exchanger 31.

[0035] A first temperature sensor 34 is provided on the air inlet side of the heat exchanger 31 to obtain the corresponding air inlet temperature of the heat exchanger 31. A second temperature sensor 35 is provided on the air outlet side of the heat exchanger 31 to obtain the corresponding air outlet temperature of the heat exchanger 31. Specifically, a blower unit 38 is also provided on the air outlet side of the heat exchanger 31, and the second temperature sensor 35 is located between the air outlet side of the heat exchanger 31 and the blower unit 38. The blower unit 38 includes multiple fans 381.

[0036] Each chiller unit 3 also includes a flow regulating valve 36 and a vent valve 37. The flow regulating valve 36 is located on the outlet side of the corresponding heat exchanger 31, i.e., on the corresponding chilled water outlet pipe 33, to regulate the chilled water outlet flow rate. The vent valve 37 is located on the top of the corresponding heat exchanger 31. The vent valve 37 is a solenoid valve; its valve body opens when its solenoid coil is energized, thereby allowing non-condensable gases to be discharged from the corresponding heat exchanger 31.

[0037] The computer room air conditioner also includes a processor. The processor is communicatively connected to a first temperature sensor 34, a second temperature sensor 35, a flow regulating valve 36, and a vent valve 37 to obtain the corresponding temperatures through the first temperature sensor 34 and the second temperature sensor 35, and then control the flow regulating valve 36 and the vent valve 37.

[0038] Combination Figure 2 As shown in the figure, this disclosure provides a method for controlling a computer room air conditioner, including:

[0039] S201, the computer room air conditioner obtains the inlet air temperature, outlet air temperature and operating fan speed of each chilled water unit.

[0040] S202, the computer room air conditioning determines the target chilled water unit based on the inlet air temperature, outlet air temperature and operating fan speed.

[0041] S203, Determine the venting requirements of the target chilled water unit for the computer room air conditioning.

[0042] S204, the computer room air conditioning controls the operation of the target chilled water unit according to the air venting requirements.

[0043] The inlet air temperature Tj of each chiller unit is obtained through a first temperature sensor, and the outlet air temperature Tc of each chiller unit is obtained through a second temperature difference sensor. The operating fan speed refers to the operating fan speed of the blower unit. The target chiller unit is determined based on the inlet air temperature, outlet air temperature, and operating fan speed. Since certain factors may prevent temperature detection from accurately reflecting the necessity of purging, the target chiller units identified here may require purging. Therefore, the purging requirement of the target chiller units is further determined next; the aim here is to determine whether the target chiller units require purging. Then, based on the purging requirement, the operation of the target chiller units is controlled to control whether the chiller units perform the purging action. The target chiller unit can be one or multiple units.

[0044] The method for controlling computer room air conditioning provided in this disclosure identifies target chilled water units (i.e., those that may require evacuation) by measuring the inlet and outlet air temperatures of each chilled water unit. The evacuation requirements of these target chilled water units are then further determined to eliminate interfering factors that might affect the evacuation decision. Based on these evacuation requirements, the operation of the target chilled water units is controlled. This allows the target chilled water units to automatically perform evacuation when evacuation is required. This method eliminates the need for significant structural modifications to the chilled water units, enabling the determination of evacuation requirements and the execution of evacuation actions, thus greatly saving costs. Furthermore, it eliminates the need for manual inspection and evacuation of chilled water units, saving considerable manpower and resources and improving work efficiency.

[0045] Combination Figure 3 As shown in the embodiments of this disclosure, another method for controlling a computer room air conditioner is provided, including:

[0046] S201, the computer room air conditioner obtains the inlet air temperature, outlet air temperature and operating fan speed of each chilled water unit.

[0047] S212, the chilled water units whose operating fan speed is within the same preset fan speed range in the computer room air conditioning system are identified as chilled water units in the same fan speed group.

[0048] S222, the computer room air conditioner determines the target chilled water unit within each airflow group based on the inlet and outlet air temperatures of the chilled water units in the same airflow group.

[0049] S203, Determine the venting requirements of the target chilled water unit for the computer room air conditioning.

[0050] S204, the computer room air conditioning controls the operation of the target chilled water unit according to the air venting requirements.

[0051] The fan speed settings of a chiller unit can include: low dehumidification speed, low cooling speed, medium cooling speed, high cooling speed, and high cooling speed. Each chiller unit may operate at different fan speeds. When a chiller unit is at different operating fan speeds, its inlet and outlet air temperatures will differ. Chiller units whose operating fan speeds fall within the same preset fan speed range are defined as chiller units in the same fan speed group. Optionally, the preset fan speed range includes: a first preset fan speed range and a second preset fan speed range. The fan speeds within the first preset fan speed range are higher than those within the second preset fan speed range. Optionally, the first preset fan speed range includes: medium cooling speed, high cooling speed, and high cooling speed, corresponding to the first fan speed group. That is, the fan speeds within the first fan speed group are all higher speeds. The second preset fan speed range includes: low dehumidification speed and low cooling speed, corresponding to the second fan speed group. That is, the fan speeds within the second fan speed group are all lower speeds. Here, each fan speed can be assigned to a different preset fan speed range according to actual needs.

[0052] Based on the inlet and outlet air temperatures of chiller units within the same airflow group, the target chiller units within each airflow group are determined. In other words, the target chiller units are determined for each airflow group. For example, chiller units 1, 3, and 5 operate at low airflow, while chiller units 7, 9, and 10 operate at high airflow. Therefore, chiller units 1, 3, and 5 are designated as the first airflow group, and the target chiller units within this group are identified. Chiller units 7, 9, and 10 are designated as the second airflow group, and the target chiller units within this group are also identified.

[0053] This approach differentiates the operating fan speeds of chilled water units, allowing for the identification of target chilled water units and more accurately pinpointing those that may require purging. It also avoids the risk of using the same judgment criteria, which could affect the accuracy of the results.

[0054] Optionally, in step S222, the computer room air conditioning system determines the target chilled water unit within each airflow group based on the inlet and outlet air temperatures of the chilled water units in the same airflow group, including:

[0055] The computer room air conditioning system calculates the average inlet air temperature and average outlet air temperature of chilled water units in the same fan speed group.

[0056] The computer room air conditioning system calculates the average inlet and outlet air temperature difference based on the average inlet and outlet air temperatures of the chilled water units grouped under the same air temperature setting, and calculates the inlet and outlet air temperature difference of a single unit based on the outlet and inlet air temperatures of the chilled water units grouped under the same air temperature setting.

[0057] The computer room air conditioning system determines the target chilled water unit within each airflow group based on the average inlet and outlet air temperature difference and the inlet and outlet air temperature difference of a single unit.

[0058] For the first windshield group:

[0059] Calculate the average inlet air temperature of the chiller units in the first windshield group according to formula (1):

[0060] Tjpg=(Tjg1+Tjg2+…+Tjgm) / m (1)

[0061] Where m is the number of chilled water units in the first air baffle group, Tjgm is the inlet air temperature of the m-th chilled water unit in the first air baffle group, and Tjpg is the average inlet air temperature of the m chilled water units in the first air baffle group.

[0062] Calculate the average outlet air temperature of the chiller units in the first windshield group according to formula (2):

[0063] Tcpg=(Tcg1+Tcg2+…+Tcgm) / m (2)

[0064] Where Tcgm is the outlet air temperature of the m-th chiller unit within the first air baffle group.

[0065] Calculate the average inlet and outlet air temperature difference of the chiller units in the first windshield group according to formula (3):

[0066] ΔTpg=(Tjpg-Tcpg) (3)

[0067] Wherein, ΔTpg is the average inlet and outlet air temperature difference of the chilled water units in the first windshield group.

[0068] The formula for calculating the inlet and outlet air temperature difference of a single unit within the first windshield group is as follows:

[0069] ΔTgm=(Tjgm-Tcgm) (4)

[0070] Wherein, ΔTgm is the temperature difference between the inlet and outlet air of the m-th chiller unit within the first windshield group.

[0071] Based on the average inlet and outlet air temperature difference ΔTpg and the single unit inlet and outlet air temperature difference ΔTgm of the chilled water units in the first air baffle group, the target chilled water units in the first air baffle group are determined.

[0072] For the second windshield group:

[0073] Calculate the average inlet air temperature of the chiller units in the second windshield group according to formula (5):

[0074] Tjpd=(Tjd1+Tjd2+…+Tjdn) / n (5)

[0075] Where n is the number of chilled water units in the second air baffle group, Tjdn is the inlet air temperature of the nth chilled water unit in the second air baffle group, and Tjpd is the average inlet air temperature of the n chilled water units in the second air baffle group.

[0076] Calculate the average outlet air temperature of the chiller units in the second windshield group according to formula (6):

[0077] Tcpd=(Tcd1+Tcd2+…+Tcdn) / n (6)

[0078] Where Tcdn is the outlet air temperature of the nth chiller unit in the second air baffle group.

[0079] Calculate the average inlet and outlet air temperature difference of the chiller units in the second windshield group according to formula (7):

[0080] ΔTpd=(Tjpd-Tcpd) (7)

[0081] Wherein, ΔTpd is the average inlet and outlet air temperature difference of the chilled water units in the second windshield group.

[0082] The formula for calculating the inlet and outlet air temperature difference of a single unit within the second windshield group is as follows: (8)

[0083] ΔTdn=(Tjdn-Tcdn) (8)

[0084] Wherein, ΔTdn is the temperature difference between the inlet and outlet air of the nth chiller unit within the second windshield group.

[0085] Based on the average inlet and outlet air temperature difference ΔTpd and the single unit inlet and outlet air temperature difference ΔTdn of the chilled water units in the second air baffle group, the target chilled water units in the second air baffle group are determined.

[0086] It should be noted that if there are other fan speed groups, the above steps can be used to determine the target chiller units within those other fan speed groups.

[0087] Optionally, the computer room air conditioning system determines the target chilled water units within each fan speed group based on the average inlet and outlet air temperature difference and the inlet and outlet air temperature difference of a single unit, including:

[0088] The computer room air conditioning system calculates the temperature difference between the inlet and outlet air temperature of each individual chilled water unit in the same fan speed group and the average inlet and outlet air temperature difference.

[0089] The chilled water units corresponding to temperature differences less than or equal to the first temperature difference threshold in the computer room air conditioning system are identified as the target chilled water units within the corresponding fan speed group.

[0090] For each fan speed group, calculate the temperature difference ΔS between the inlet and outlet air temperature difference of each individual chiller unit in the current fan speed group and the average inlet and outlet air temperature difference. This will result in multiple temperature difference values ​​ΔS, each corresponding to one chiller unit. A first temperature difference threshold T1 is set, T1 < 0, and pre-stored in the processor of the computer room air conditioning system. Compare the values ​​of ΔS and T1. If ΔS ≤ T1, it indicates that the inlet and outlet air temperature difference of the chiller unit corresponding to ΔS deviates significantly from the average inlet and outlet air temperature difference, and it is very likely that venting is required. Therefore, this chiller unit is identified as the target chiller unit.

[0091] For the first windshield group:

[0092] Specifically, the temperature difference between the inlet and outlet air temperature difference of each individual unit in the first windshield group and the average inlet and outlet air temperature difference is calculated according to formula (9):

[0093] ΔSgm=(ΔTgm-ΔTpg) (9)

[0094] Wherein, ΔSgm is the temperature difference between the inlet and outlet air temperature difference of a single chiller unit in the m-th chiller unit within the first windshield group and the average inlet and outlet air temperature difference.

[0095] Compare the magnitudes of ΔSgm and T1. For example, if ΔSg1 ≤ T1, ΔSg1 is the temperature difference between the inlet and outlet air temperature difference of a single chiller unit within the first air baffle group and the average inlet and outlet air temperature difference. Therefore, ΔSg1 corresponds to the first chiller unit within the first air baffle group, and thus the first chiller unit within the first air baffle group is determined as the target chiller unit for the first air baffle group. Conversely, if ΔSg2 > T1, then the second chiller unit within the first air baffle group is not the target chiller unit.

[0096] For the second windshield group:

[0097] Specifically, the temperature difference between the inlet and outlet air temperature difference of each individual unit in the second windshield group and the average inlet and outlet air temperature difference is calculated according to formula (10):

[0098] ΔSdn=(ΔTdn-ΔTpd) (10)

[0099] Wherein, ΔSdn is the temperature difference between the inlet and outlet air temperature difference of a single chiller unit within the second windshield group and the average inlet and outlet air temperature difference.

[0100] Compare the magnitudes of ΔSdn and T1. For example, if ΔSd1 ≤ T1, ΔSd1 is the temperature difference between the inlet and outlet air temperature difference of a single chiller unit within the second airflow group and the average inlet and outlet air temperature difference. Therefore, ΔSd1 corresponds to the first chiller unit within the second airflow group, and the first chiller unit within the second preset airflow range is determined as the target chiller unit for the second airflow group. Conversely, if ΔSd2 > T1, then the second chiller unit within the second airflow group is not the target chiller unit.

[0101] Here, after dividing each chiller unit into different fan speed groups, each chiller unit within the same fan speed group is numbered. For example, the chiller units within the same fan speed group are numbered according to their positional order to determine which chiller unit in each fan speed group is the target chiller unit.

[0102] Combination Figure 4 As shown in the embodiments of this disclosure, another method for controlling a computer room air conditioner is provided, including:

[0103] S201, the computer room air conditioner obtains the inlet air temperature, outlet air temperature and operating fan speed of each chilled water unit.

[0104] S202, the computer room air conditioning determines the target chilled water unit based on the inlet air temperature, outlet air temperature and operating fan speed.

[0105] S213, the computer room air conditioner controls the target chilled water unit to execute different target parameter adjustment strategies according to the air filter group where the target chilled water unit is located.

[0106] S223, the computer room air conditioner obtains the new inlet air temperature and the new outlet air temperature of the target chilled water unit.

[0107] S233, the computer room air conditioning determines the corresponding target chilled water unit's venting requirements based on the new inlet air temperature and the new outlet air temperature.

[0108] S204, the computer room air conditioning controls the operation of the target chilled water unit according to the air venting requirements.

[0109] Based on the wind speed group of the target chiller unit, different parameter adjustment strategies are determined for the target chiller unit, and the corresponding target chiller unit is controlled to execute them. This is to further determine the venting requirements of the target chiller unit. After the target chiller unit has operated according to the target adjustment strategy for a preset period of time, the new inlet air temperature and new outlet air temperature of the target chiller unit are reacquired. Based on the new inlet air temperature and new outlet air temperature, the venting requirements of the corresponding target chiller unit are determined. The operation of the corresponding target chiller unit is controlled according to the venting requirements.

[0110] Specifically, if the chiller unit is in the first fan speed group, its operating fan speed is at a higher level. Therefore, the target parameter adjustment strategy is to lower the current fan speed to a lower level to determine whether the venting conditions are still met when operating at a lower fan speed, thus eliminating the influence of the higher fan speed on the venting demand assessment. Since the chiller units in the first fan speed group are at a higher fan speed, their corresponding flow control valves are also at maximum opening, so there is no need to adjust the flow control valves to maximum opening. After lowering the fan speed and running for a preset time, the new inlet air temperature and the new outlet air temperature are obtained to determine the venting demand of the corresponding target chiller unit.

[0111] If the chiller unit is in the second fan speed group, its operating fan speed is at a lower setting, and the flow control valve is usually not at its maximum opening. Therefore, the target parameter adjustment strategy is to open the flow control valve to its maximum opening. This is to eliminate the impact of the flow control valve not being fully open on the accuracy of the venting judgment. After opening the flow control valve to its maximum opening and running for a preset time, the new inlet air temperature and the new outlet air temperature are obtained, thereby determining the corresponding venting requirement of the target chiller unit.

[0112] Optionally, during the process of the computer room air conditioner controlling the flow regulating valve to open to the maximum opening degree, it controls the opening rate of the flow regulating valve according to the temperature difference ΔS corresponding to the target chilled water unit. For example, when controlling the flow regulating valve of the first chilled water unit in the first air volume group to open to the maximum opening degree, it controls the opening rate of this flow regulating valve according to ΔSg1. When controlling the flow regulating valve of the second chilled water unit in the second air volume group to open to the maximum opening degree, it controls the opening rate of this flow regulating valve according to ΔSd2.

[0113] Optionally, the larger the temperature difference ΔS, the greater the opening rate. Specifically, if T5 < ΔS ≤ T1, then control the flow regulating valve to open at the first rate K1. If ΔS ≤ T5, then control the flow regulating valve to open at the second rate K2. Here, T5 is the fifth temperature difference threshold, and K1 < K2. Optionally, T5 = 1.5T1 and K2 = 2K1.

[0114] Optionally, during the process of the computer room air conditioner controlling the flow regulating valve to open at the second rate K2, it corrects the current opening rate of the flow regulating valve according to the change of the corresponding real-time temperature difference ΔTn between the inlet and outlet of a single unit. For example, when controlling the flow regulating valve of the first chilled water unit in the first air volume group to open to the maximum opening degree, it controls the opening rate of this flow regulating valve according to the real-time ΔTg1. When controlling the flow regulating valve of the second chilled water unit in the second air volume group to open to the maximum opening degree, it controls the opening rate of this flow regulating valve according to the real-time ΔTd2. This is because when the flow regulating valve opens at the second rate, its opening rate is relatively fast. If the real-time temperature difference ΔTn between the inlet and outlet of a single unit also changes too fast, it is easy to cause overshoot, so the current opening rate needs to be corrected. Optionally, the faster ΔTn drops, the greater the degree of correction of the current opening rate.

[0115] Specifically, if the drop rate of the real-time temperature difference ΔTn between the inlet and outlet of a single unit within the set time period is ΔV, if ΔV ≤ V1, then do not correct the current opening rate. If V1 < ΔV ≤ V2, then correct the current opening rate to the third rate K3; if V2 < ΔV ≤ V3, then correct the current opening rate to the fourth rate K4. If V3 < ΔV, then correct the current opening rate to the first rate K1. Here, K1 < K4 < K3 < K2. Optionally, K3 = 1.7K1 and K4 = 1.3K1. Here, V1 is the first rate threshold, V2 is the second rate threshold, and V3 is the third rate threshold.

[0116] Optionally, in step S233, the computer room air conditioner determines the evacuation requirement of the corresponding target chilled water unit according to the new inlet air temperature and the new outlet air temperature, including:

[0117] The computer room air conditioner calculates the real-time temperature difference according to the new inlet air temperature and the new outlet air temperature.

[0118] The computer room air conditioning determines the target temperature difference threshold based on the fan group where the target chilled water unit is located.

[0119] When the real-time temperature difference in the computer room air conditioning is less than or equal to the target temperature difference threshold, the corresponding target chilled water unit's venting requirement is determined to be venting.

[0120] If the real-time temperature difference in the computer room air conditioning exceeds the target temperature difference threshold, the venting requirement of the corresponding target chilled water unit is determined to be no longer required.

[0121] Using the new inlet and outlet air temperatures, and the formulas mentioned earlier, the real-time temperature difference ΔS' corresponding to each fan speed group is recalculated. For example, the real-time temperature difference ΔSgm' corresponds to the first fan speed group, and the real-time temperature difference ΔSdn' corresponds to the second fan speed group. Different fan speeds correspond to different temperature difference thresholds. The target temperature difference threshold is determined based on the fan speed group in which the target chiller unit is located. For example, if the target chiller unit is in the first fan speed group, the target temperature difference threshold is the second temperature difference threshold T2; if the target chiller unit is in the second fan speed group, the target temperature difference threshold is the third temperature difference threshold T3. Where T2 < 0, T3 < 0.

[0122] If the real-time temperature difference is less than or equal to the target temperature difference threshold, for example, ΔSgm'≤T2 or ΔSdn'≤T3, it indicates that the inlet and outlet air temperature difference of a single chiller unit still deviates significantly from the average inlet and outlet air temperature difference. In this case, it is determined that there is an excess of non-condensable gases within the target chiller unit, indicating air blockage in the corresponding heat exchanger. Therefore, the venting requirement for the target chiller unit is determined to be venting.

[0123] If the real-time temperature difference is greater than the target temperature difference threshold, for example, ΔSgm'>T2, it indicates that the previously calculated ΔSgm is less than or equal to T1 due to the influence of the fan damper on the target chiller unit. Or, ΔSdn'>T3, it indicates that the previously calculated ΔS is less than or equal to T1 because the flow control valve of the target chiller unit is not properly adjusted. If, after lowering the fan damper or increasing the flow control valve opening, the real-time temperature difference is within the normal range, then the purging requirement of the target chiller unit is determined to be unnecessary.

[0124] Combination Figure 5 As shown in the embodiments of this disclosure, another method for controlling a computer room air conditioner is provided, including:

[0125] S201, the computer room air conditioner obtains the inlet air temperature, outlet air temperature and operating fan speed of each chilled water unit.

[0126] S202, the computer room air conditioning determines the target chilled water unit based on the inlet air temperature, outlet air temperature and operating fan speed.

[0127] S203, Determine the venting requirements of the target chilled water unit for the computer room air conditioning.

[0128] S214, When the air venting requirement of the computer room air conditioner is required, control the opening of the venting valve corresponding to the target chilled water unit.

[0129] S224, When the air venting requirement of the computer room air conditioner is not required, the control valve corresponding to the target chilled water unit is kept closed.

[0130] The vent valve only opens when venting is required, therefore its initial state is closed. If venting is determined to be necessary, the vent valve corresponding to the target chiller unit is opened to release non-condensable gases. Simultaneously, the corresponding flow control valve is kept at its maximum opening. For example, if the target chiller unit is the third chiller unit in the first fan group and venting is required, its corresponding vent valve is opened. Simultaneously, the flow control valve for the third chiller unit is kept at its maximum opening. If venting is determined not to be necessary, the vent valve corresponding to the target chiller unit remains closed.

[0131] Optionally, during the process of controlling the opening of the vent valve, the computer room air conditioner controls the opening rate of the corresponding vent valve according to the recalculated real-time temperature difference ΔS' corresponding to the target chilled water unit and the target temperature difference threshold corresponding to the current fan speed group, until it opens to the maximum degree. For example, when controlling the vent valve of the first chilled water unit in the first fan speed group to open to the maximum degree, the opening rate of the vent valve is controlled according to ΔSg1'. When controlling the vent valve of the second chilled water unit in the second fan speed group to open to the maximum degree, the opening rate of the vent valve is controlled according to ΔSd2'. Optionally, the larger the real-time temperature difference ΔS', the larger the opening rate, so as to vent non-condensable gases as quickly as possible. Specifically, when the fan speed group is the first fan speed group, the target temperature difference threshold is the second temperature difference threshold T2. If T6 < ΔS' ≤ T2, the vent valve is controlled to open at the first opening rate M1. If ΔS' ≤ T6, the vent valve is controlled to open at the second opening rate M2. Where T6 is the sixth temperature difference threshold, and M2 > M1. Optionally, T6 = 1.5T2, M2 = 1.5M1. When the fan damper group is the second fan damper group, the target temperature difference threshold is the third temperature difference threshold T3. If T7 < ΔS' ≤ T3, the vent valve is controlled to open at the third opening rate M3. If ΔS' ≤ T7, the vent valve is controlled to open at the fourth opening rate M4. Where T7 is the seventh temperature difference threshold, and M4 > M3. Optionally, T7 = 1.5T3, M4 = 1.5M3.

[0132] Optionally, during the process of the computer room air conditioner controlling the evacuation valve to open at the second opening rate M2 or the fourth opening rate M4, according to the change of the corresponding real-time temperature difference ΔTn between the inlet and outlet of a single unit, the current opening rate of the evacuation valve is corrected. This is because when the evacuation valve opens at the second opening rate or the fourth opening rate, its opening rate is relatively fast. If the real-time temperature difference ΔTn between the inlet and outlet of a single unit also changes too fast, it is easy to cause overshoot, so the current opening rate needs to be corrected. Optionally, the faster ΔTn drops, the greater the degree of correction to the current opening rate.

[0133] Specifically, if the drop rate of the real-time temperature difference ΔTn between the inlet and outlet of a single unit within the set duration is ΔW, if ΔW ≤ W1, the current opening rate is not corrected. If W1 < ΔW ≤ W2, the current opening rate is corrected to the third opening rate M3; if W2 < ΔW ≤ W3, the current opening rate is corrected to the fourth opening rate M4. If W3 < ΔW, the current opening rate is corrected to the first opening rate M1. Among them, M1 < M4 < M3 < M2. Optionally, M3 = 1.7M1, M4 = 1.3M1. Here, W1 is the first opening rate threshold, W2 is the second opening rate threshold, and W3 is the third opening rate threshold.

[0134] Optionally, when controlling the evacuation valve to open, the current air volume is controlled according to the previous operating air volume of the target chilled water unit. If the previous operating air volume of the target chilled water unit is within the first air volume grouping, the target chilled water unit is controlled to resume the previous operating air volume. For example, if the target chilled water unit previously operated at the high cooling air volume, when controlling the evacuation valve to open, the target chilled water unit is controlled to resume the high cooling air volume. If the previous operating air volume of the target chilled water unit is within the second air volume grouping, the target chilled water unit is controlled to maintain the current air volume. For example, if the target chilled water unit previously operated at the low cooling air volume, when controlling the evacuation valve to open, the target chilled water unit is controlled to maintain the low cooling air volume.

[0135] Combined with Figure 6 As shown in the figure, another method for controlling a computer room air conditioner provided by an embodiment of the present disclosure includes:

[0136] S201, the computer room air conditioner obtains the inlet air temperature, outlet air temperature and operating air volume of each chilled water unit.

[0137] S202, the computer room air conditioner determines the target chilled water unit according to the inlet air temperature, outlet air temperature and operating air volume.

[0138] S203, the computer room air conditioner determines the evacuation requirement of the target chilled water unit.

[0139] S214, When the air venting requirement of the computer room air conditioner is required, control the opening of the venting valve corresponding to the target chilled water unit.

[0140] S205, the computer room air conditioner obtains the current outlet air temperature and the current inlet air temperature of the target chilled water unit.

[0141] S206, the computer room air conditioner controls the opening and closing status of the corresponding exhaust valve based on the current air outlet temperature and the current air inlet temperature.

[0142] After the control vent valve is opened, the current outlet air temperature and current inlet air temperature of the target chiller unit are obtained. According to the different fan speed groups, the current outlet air temperature and inlet air temperature are substituted into the formula (4) or (8) mentioned above to recalculate the current single unit inlet and outlet air temperature difference of the target chiller unit in different fan speed groups. According to the different fan speed groups, the current average outlet air temperature and current average inlet air temperature of each chiller unit are substituted into the formula (3) or (7) mentioned above to recalculate the current average inlet and outlet air temperature difference of each chiller unit in different fan speed groups. According to the different fan speed groups, the current single unit inlet and outlet air temperature difference and the current average inlet and outlet air temperature difference are substituted into the formula (9) or (10) mentioned above to recalculate the current real-time temperature difference ΔS” corresponding to different fan speed groups. For example, the current real-time temperature difference ΔSgm” corresponding to the first fan speed group and the current real-time temperature difference ΔSdn” corresponding to the second fan speed group.

[0143] Based on the calculated real-time temperature difference, the opening and closing status of the corresponding vent valve is controlled. Specifically, a fourth temperature difference threshold T4 is set and pre-stored in the processor of the computer room air conditioner. Optionally, T4 is 0. If the current real-time temperature difference ΔS” is less than or equal to the fourth temperature difference threshold, for example, ΔSgm”≤T4, or ΔSdn”≤T4, the corresponding vent valve is kept open. If the current real-time temperature difference ΔS” is greater than the fourth temperature difference threshold, for example, ΔSgm”>T4, or ΔSdn”>T4, it indicates that the non-condensable gases of the corresponding target chiller unit have been discharged, and the corresponding vent valve is closed to complete the venting action of the target chiller unit. At the same time, the opening degree of the corresponding flow regulating valve is adjusted according to the cooling demand. For example, if ΔSd3”>T4, and ΔSd3” corresponds to the third chiller unit in the second fan baffle group, the vent valve of the third chiller unit in the second fan baffle group is closed. Meanwhile, the flow control valve of the third chiller unit controlling the second fan group adjusts according to the cooling demand.

[0144] After the target chiller unit is emptied, the corresponding heat exchanger can continue to operate in a high-efficiency heat exchange state, thereby improving the overall cooling effect of the computer room air conditioning.

[0145] Combination Figure 7 As shown in the illustration, this disclosure provides an apparatus 70 for controlling a computer room air conditioner, including: an acquisition module 71, a first determination module 72, a second determination module 73, and a control module 74. The acquisition module 71 is configured to acquire the inlet air temperature, outlet air temperature, and operating fan speed of each chiller unit. The first determination module 72 is configured to determine a target chiller unit based on the inlet air temperature, outlet air temperature, and operating fan speed. The second determination module 73 is configured to determine the venting requirement of the target chiller unit. The control module 74 is configured to control the operation of the target chiller unit according to the venting requirement.

[0146] The device for controlling computer room air conditioning provided in this embodiment determines the target chilled water chiller unit (i.e., the chilled water chiller unit that may need to be emptied) by measuring the inlet and outlet air temperatures of each chilled water chiller unit. Then, the emptying requirement of the target chilled water chiller unit is further determined to eliminate interfering factors affecting the emptying judgment. Based on the emptying requirement, the operation of the target chilled water chiller unit is controlled. This allows the target chilled water chiller unit to automatically perform the emptying action when it needs to be emptied. In this way, the determination of emptying requirements and the execution of emptying actions can be achieved without significant modifications to the structure of the chilled water chiller units, greatly saving costs. Furthermore, it eliminates the need for manual inspection and emptying of chilled water chiller units, saving considerable manpower and resources and improving work efficiency.

[0147] Combination Figure 8 As shown in the figure, this disclosure provides an apparatus 80 for controlling a computer room air conditioner, including a processor 81 and a memory 82. Optionally, the apparatus may further include a communication interface 83 and a bus 84. The processor 81, communication interface 83, and memory 82 can communicate with each other via the bus 84. The communication interface 83 can be used for information transmission. The processor 81 can call logical instructions in the memory 82 to execute the method for controlling the computer room air conditioner described in the above embodiment.

[0148] Furthermore, the logic instructions in the aforementioned memory 82 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium.

[0149] The memory 82, as a computer-readable storage medium, can be used to store software programs and computer-executable programs, such as program instructions / modules corresponding to the methods in the embodiments of this disclosure. The processor 81 executes functional applications and data processing by running the program instructions / modules stored in the memory 82, that is, it implements the method for controlling the computer room air conditioner in the above embodiments.

[0150] The memory 82 may include a program storage area and a data storage area. The program storage area may store the operating system and application programs required for at least one function; the data storage area may store data created based on the use of the terminal device. Furthermore, the memory 82 may include high-speed random access memory and may also include non-volatile memory.

[0151] Combination Figure 9 As shown, this disclosure provides a data center air conditioner 90, including: a data center air conditioner body, and the aforementioned device 70 (80) for controlling the data center air conditioner. The device 70 (80) for controlling the data center air conditioner is installed on the data center air conditioner body. The installation relationship described herein is not limited to placement inside the product, but also includes installation connections with other components of the product, including but not limited to physical connections, electrical connections, or signal transmission connections. Those skilled in the art will understand that the device 70 (80) for controlling the data center air conditioner can be adapted to feasible product bodies to achieve other feasible embodiments.

[0152] This disclosure provides a computer-readable storage medium storing computer-executable instructions configured to perform the above-described method for controlling a computer room air conditioner.

[0153] The aforementioned computer-readable storage medium may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0154] The technical solutions of this disclosure can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes one or more instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in this disclosure. The aforementioned storage medium can be a non-transitory storage medium, including: a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and other media capable of storing program code; it can also be a transient storage medium.

[0155] The foregoing description and accompanying drawings fully illustrate embodiments of this disclosure to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, procedural, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the terminology used in this application is for describing embodiments only and is not intended to limit the claims. As used in the description of embodiments and claims, the singular forms “a,” “an,” and “the” are intended to equally include the plural forms unless the context clearly indicates otherwise. Similarly, the term “and / or” as used in this application means including one or more of the associated listed items and all possible combinations thereof. Additionally, when used in this application, the term "comprise" and its variations "comprises" and / or "comprising" refer to the presence of stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof. Without further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the process, method, or apparatus that includes said element. In this document, each embodiment may focus on the differences from other embodiments, and similar or identical parts between embodiments can be referred to mutually. For methods, products, etc., disclosed in the embodiments, if they correspond to the method section disclosed in the embodiments, the relevant parts can be referred to the description of the method section.

[0156] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the embodiments of this disclosure. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0157] The methods and products (including but not limited to devices and equipment) disclosed in the embodiments herein can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For instance, the division of units may be merely a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the shown or discussed units may be through some interfaces, and the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units may be selected to implement this embodiment according to actual needs. Furthermore, the functional units in the embodiments of this disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0158] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than that shown in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, the operations or steps corresponding to different blocks may also occur in a different order than disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. Each block in a block diagram and / or flowchart, and combinations of blocks in a block diagram and / or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

Claims

1. A method for controlling a computer room air conditioner, characterized by, The machine room air conditioner comprises a plurality of chilled water units; the method comprises: obtaining the inlet air temperature, outlet air temperature and running air damper of each chilled water unit; determining the target chilled water unit according to the inlet air temperature, outlet air temperature and running air damper; wherein the determination of the target chilled water unit according to the inlet air temperature, outlet air temperature and running air damper comprises: determining the chilled water units with the running air damper in the same preset air damper range as the same air damper group; determining the target chilled water unit in each air damper group according to the inlet air temperature and outlet air temperature of the chilled water units in the same air damper group; determining the emptying requirement of the target chilled water unit; controlling the operation of the target chilled water unit according to the emptying requirement.

2. The method of claim 1, wherein, The determination of the target chilled water unit in each air damper group according to the inlet air temperature and outlet air temperature of the chilled water units in the same air damper group comprises: calculating the average inlet air temperature and average outlet air temperature of the chilled water units in the same air damper group; calculating the average inlet-outlet air temperature difference according to the average inlet air temperature and average outlet air temperature of the chilled water units in the same air damper group, and calculating the single-unit inlet-outlet air temperature difference according to the outlet air temperature and inlet air temperature of the chilled water units in the same air damper group; determining the target chilled water unit in each air damper group according to the average inlet-outlet air temperature difference and the single-unit inlet-outlet air temperature difference.

3. The method of claim 2, wherein, The determination of the target chilled water unit in each air damper group according to the average inlet-outlet air temperature difference and the single-unit inlet-outlet air temperature difference comprises: calculating the temperature difference value of each single-unit inlet-outlet air temperature difference and the average inlet-outlet air temperature difference of the chilled water units in the same air damper group; determining the chilled water unit corresponding to the temperature difference value less than or equal to the first temperature difference threshold as the target chilled water unit in the corresponding air damper group.

4. The method of claim 3, wherein, The determination of the emptying requirement of the target chilled water unit comprises: controlling the target chilled water unit to execute different target parameter adjustment strategies according to the air damper group in which the target chilled water unit is located; obtaining the new inlet air temperature and new outlet air temperature of the target chilled water unit; determining the emptying requirement of the corresponding target chilled water unit according to the new inlet air temperature and new outlet air temperature.

5. The method of claim 4, wherein, The control of the target chilled water unit to execute different target parameter adjustment strategies according to the air damper group in which the target chilled water unit is located comprises: controlling the target chilled water unit to be lowered to a low air damper in the case that the target chilled water unit is in a first air damper group and the running air damper is a higher air damper position; controlling the flow adjustment valve corresponding to the target chilled water unit to be opened to the maximum opening degree in the case that the target chilled water unit is in a second air damper group and the running air damper is a lower air damper position; wherein the air damper of the first air damper group is higher than the air damper of the second air damper group.

6. The method according to claim 5, wherein controlling the opening rate of the flow adjustment valve according to the temperature difference value corresponding to the target chilled water unit in the process of controlling the flow adjustment valve to be opened to the maximum opening degree.

7. The method according to claim 6, wherein the greater the temperature difference value corresponding to the target chilled water unit, the greater the opening rate of the flow adjustment valve.

8. The method of claim 4, wherein, The method comprises the following steps: According to the new air inlet temperature and the new air outlet temperature, the real-time temperature difference value is calculated; According to the air damper group where the target chilled water unit is located, the target temperature difference threshold is determined; In the case that the real-time temperature difference value is less than or equal to the target temperature difference threshold, it is determined that the emptying requirement of the corresponding target chilled water unit is to be emptied; In the case that the real-time temperature difference value is greater than the target temperature difference threshold, it is determined that the emptying requirement of the corresponding target chilled water unit is not to be emptied.

9. The method according to any one of claims 1 to 8, characterized in that, The machine room air conditioner further comprises: a plurality of emptying valves, corresponding to each chilled water unit, and arranged at the top of the heat exchanger of the corresponding chilled water unit. The method further comprises the following steps: In the case that the emptying requirement is to be emptied, the emptying valve corresponding to the target chilled water unit is controlled to be opened.

10. The method of claim 9, wherein the controlling the operation of the target chilled water unit according to the emptying requirement further comprises: During the process of controlling the emptying valve to be opened, the opening rate of the corresponding emptying valve is controlled according to the real-time temperature difference value recalculated corresponding to the target chilled water unit and the target temperature difference threshold corresponding to the current air damper group, until it is opened to the maximum opening degree.

11. The method of any one of claims 5 to 7, wherein, The method further comprises the following steps: In the case that the emptying valve is controlled to be opened, the current air damper is controlled according to the previous operation air damper of the target chilled water unit.

12. The method of claim 11, wherein, The method further comprises the following steps: In the case that the previous operation air damper of the target chilled water unit is in the first air damper group, the target chilled water unit is controlled to return to the previous operation air damper; In the case that the previous operation air damper of the target chilled water unit is in the second air damper group, the target chilled water unit is controlled to maintain the current air damper.

13. The method of claim 9, wherein, After the method of controlling the emptying valve corresponding to the target chilled water unit to be opened, the method further comprises the following steps: The current air outlet temperature and the current air inlet temperature of the target chilled water unit are obtained; According to the current air outlet temperature and the current air inlet temperature, the opening and closing state of the corresponding emptying valve is controlled.

14. The method of claim 9, wherein, The method further comprises the following steps: In the case that the emptying requirement is not to be emptied, the emptying valve corresponding to the target chilled water unit is controlled to be in the closed state.

15. An apparatus for controlling a computer room air conditioner, comprising a processor and a memory having stored therein program instructions, wherein, The processor is configured to execute the method for controlling the machine room air conditioner as claimed in any one of claims 1 to 14 when the program instructions are executed.

16. A computer room air conditioner characterized by The method comprises the following steps: The machine room air conditioner body; and The device for controlling the machine room air conditioner as claimed in claim 15 is installed in the machine room air conditioner body; The machine room air conditioner body comprises: a plurality of chilled water units.

17. A storage medium storing program instructions, characterized in that, The program instructions are executed to perform the method for controlling the machine room air conditioner as claimed in any one of claims 1 to 14.

Images