Machine room air conditioner and control method, device, storage medium and program product thereof

Abstract

The application discloses a computer room air conditioner and a control method, device, storage medium and computer program product thereof. The method comprises the following steps: acquiring the indoor environment temperature of the computer room air conditioner, the set temperature of the computer room air conditioner, the outdoor environment temperature of the computer room air conditioner and the working current of the computer room equipment in the environment where the computer room air conditioner is located under the condition that the computer room air conditioner is running; predicting the load demand of the computer room air conditioner according to the indoor environment temperature of the computer room air conditioner, the set temperature of the computer room air conditioner, the outdoor environment temperature of the computer room air conditioner and the working current of the computer room equipment; and adjusting the target frequency of the compressor in the computer room air conditioner in advance according to the load demand of the computer room air conditioner. According to the scheme, the load demand of the computer room air conditioner is predicted by combining the working current of the computer room equipment in the computer room air conditioner, and the frequency of the compressor is adjusted in advance, so that the energy-saving effect is realized under the condition that the temperature control of the computer room air conditioner is ensured.

Description

Technical Field

[0001] This invention belongs to the field of computer room air conditioning technology, specifically relating to a control method, device, air conditioner, storage medium, and computer program product for a computer room air conditioner, and particularly to a frequency control method, device, air conditioner, storage medium, and computer program product based on room load demand under an energy-saving operation mode for a computer room air conditioner. Background Technology

[0002] Data center air conditioning is primarily used to cool the equipment in the data center, which mainly consists of communication servers and other similar equipment. Generally, because the equipment in a data center generates continuous heat, the air conditioning operates continuously for extended periods. Data center air conditioning consumes a significant amount of electricity, with statistics showing it accounts for approximately 40% to 60% of the total power consumption of a data center, indicating substantial potential for energy conservation.

[0003] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is prior art. Summary of the Invention

[0004] The purpose of this invention is to provide a control method, device, air conditioner, storage medium, and computer program product for a computer room air conditioner, in order to solve the problem of the huge power consumption of computer room air conditioners and the need to take energy-saving measures to save power. The invention aims to achieve the effect of energy saving by predicting the load demand of the computer room air conditioner by combining the working current of the computer room equipment in the air conditioner and adjusting the frequency of the compressor in advance, so as to ensure the temperature control of the computer room air conditioner.

[0005] This invention provides a control method for a data center air conditioner. When the data center air conditioner is running, the method acquires the indoor ambient temperature, the set temperature, and the outdoor ambient temperature, as well as the operating current of the data center equipment in the environment where the air conditioner is located. Based on these data, the method predicts the load demand of the data center air conditioner. Then, based on the load demand, the method adjusts the target frequency of the compressor in the data center air conditioner in advance.

[0006] In some embodiments, the load demand of the data center air conditioner includes: a first demand, a second demand, a third demand, and a fourth demand, with the load decreasing sequentially; predicting the load demand of the data center air conditioner based on the indoor ambient temperature of the data center air conditioner, the set temperature of the data center air conditioner, the outdoor ambient temperature of the data center air conditioner, and the operating current of the data center equipment includes: determining the difference between the indoor ambient temperature of the data center air conditioner and the set temperature of the data center air conditioner, and recording it as the indoor temperature difference of the data center air conditioner; determining whether the indoor temperature difference of the data center air conditioner meets the requirement that it remains within a certain range for a continuous first set time period. Within a set temperature range; if it is determined that the indoor temperature difference of the computer room air conditioner is within the set temperature range for a continuous first set time period, then the load demand of the computer room air conditioner is predicted based on the outdoor ambient temperature of the computer room air conditioner and the operating current of the computer room equipment, and the predicted load demand of the computer room air conditioner is determined to be a second demand or a third demand; if it is determined that the indoor temperature difference of the computer room air conditioner is not within the set temperature range for a continuous first set time period, then the predicted load demand of the computer room air conditioner is determined to be a first demand or a fourth demand based on the indoor temperature difference of the computer room air conditioner.

[0007] In some implementations, predicting the load demand of the air conditioner based on the outdoor ambient temperature and the operating current of the equipment in the data center, and determining the predicted load demand as a second or third demand, includes: determining the change in the outdoor ambient temperature and the change in the operating current of the equipment in the data center within a second set time period; determining whether the change in the outdoor ambient temperature exceeds a set temperature accuracy or the change in the operating current exceeds a set current accuracy; if it is determined that the change in the outdoor ambient temperature exceeds the set temperature accuracy or the change in the operating current exceeds the set current accuracy, then the predicted load demand of the air conditioner is determined as a second demand; if it is determined that the change in the outdoor ambient temperature does not exceed the set temperature accuracy or the change in the operating current does not exceed the set current accuracy, then the predicted load demand of the air conditioner is determined as a third demand.

[0008] In some implementations, determining the predicted load demand of the computer room air conditioner as a first demand or a fourth demand based on the indoor temperature difference of the computer room air conditioner includes: determining whether the indoor temperature difference of the computer room air conditioner is greater than the upper limit of a set temperature range, or determining whether the indoor temperature difference of the computer room air conditioner is less than the lower limit of a set temperature range; if the indoor temperature difference of the computer room air conditioner is determined to be greater than the upper limit of the set temperature range, then the predicted load demand of the computer room air conditioner is determined to be the first demand; if the indoor temperature difference of the computer room air conditioner is determined to be less than the lower limit of the set temperature range, then the predicted load demand of the computer room air conditioner is determined to be the fourth demand.

[0009] In some implementations, adjusting the target frequency of the compressor in the computer room air conditioner in advance according to the load demand of the computer room air conditioner includes: determining the load amount of the computer room air conditioner's load demand when the load demand of the computer room air conditioner includes a first demand, a second demand, a third demand, and a fourth demand that decrease sequentially; if the load demand of the computer room air conditioner is determined to be the first demand, then the target frequency of the compressor is determined to be the sum of the compressor's current frequency and a set up frequency value, and the compressor is controlled to operate at the compressor's target frequency; if the load demand of the computer room air conditioner is determined to be the second demand, then the target frequency of the compressor is determined based on the outdoor ambient temperature of the computer room air conditioner and the operating current of the computer room equipment, and the compressor is controlled to operate at the compressor's target frequency; if the load demand of the computer room air conditioner is determined to be the third demand, then the current frequency of the compressor is determined to be the compressor's target frequency, and the compressor is controlled to operate at the compressor's target frequency; if the load demand of the computer room air conditioner is determined to be the fourth demand, then the target frequency of the compressor is determined to be the difference between the compressor's current frequency and a set down frequency value, and the compressor is controlled to operate at the compressor's target frequency.

[0010] In some embodiments, the operating current of the data center equipment includes: a recorded value of the operating current of the data center equipment and a detected value of the operating current of the data center equipment; determining the target frequency of the compressor based on the outdoor ambient temperature of the data center air conditioner and the operating current of the data center equipment includes: determining whether a historical recorded value of the operating current of the data center equipment is 0; if it is determined that a historical recorded value of the operating current of the data center equipment is 0, then setting the current recorded value of the operating current of the data center equipment equal to the current detected value of the operating current of the data center equipment .... If the recorded value is not 0, then the current recorded value of the operating current of the computer room equipment is equal to half the sum of the historical recorded value of the operating current of the computer room equipment and the current detected value of the operating current of the computer room equipment. Based on the correspondence between the set ambient temperature, set frequency, and set operating current, the set operating current that is the same as or within the set current error range of the current recorded value of the operating current of the computer room equipment, and the set frequency that is the same as or within the set temperature error range of the outdoor ambient temperature of the computer room air conditioner, are determined as the target frequency of the compressor.

[0011] In some implementations, the method further includes allowing the target frequency of the compressor in the computer room air conditioner to be adjusted again only after a third set time has elapsed since the target frequency of the compressor in the computer room air conditioner was adjusted.

[0012] In conjunction with the above method, another aspect of the present invention provides a control device for a data center air conditioner, comprising: an acquisition unit configured to acquire, while the data center air conditioner is operating, the indoor ambient temperature of the data center air conditioner, the set temperature of the data center air conditioner, the outdoor ambient temperature of the data center air conditioner, and the operating current of the data center equipment in the environment where the data center air conditioner is located; a control unit configured to predict the load demand of the data center air conditioner based on the indoor ambient temperature of the data center air conditioner, the set temperature of the data center air conditioner, the outdoor ambient temperature of the data center air conditioner, and the operating current of the data center equipment; the control unit is further configured to adjust the target frequency of the compressor in the data center air conditioner in advance according to the load demand of the data center air conditioner.

[0013] In some embodiments, the load demand of the data center air conditioner includes: a first demand, a second demand, a third demand, and a fourth demand, with the load decreasing sequentially; the control unit predicts the load demand of the data center air conditioner based on the indoor ambient temperature of the data center air conditioner, the set temperature of the data center air conditioner, the outdoor ambient temperature of the data center air conditioner, and the operating current of the data center equipment, including: determining the difference between the indoor ambient temperature of the data center air conditioner and the set temperature of the data center air conditioner, and recording it as the indoor temperature difference of the data center air conditioner; determining whether the indoor temperature of the data center air conditioner is satisfied within a continuous first set time period. If the temperature difference is within the set temperature range, and it is determined that the indoor temperature difference of the computer room air conditioner is within the set temperature range for a continuous first set time period, then the load demand of the computer room air conditioner is predicted based on the outdoor ambient temperature of the computer room air conditioner and the operating current of the computer room equipment, and the predicted load demand of the computer room air conditioner is determined to be the second demand or the third demand; if it is determined that the indoor temperature difference of the computer room air conditioner is not within the set temperature range for a continuous first set time period, then the predicted load demand of the computer room air conditioner is determined to be the first demand or the fourth demand based on the indoor temperature difference of the computer room air conditioner.

[0014] In some embodiments, the control unit predicts the load demand of the air conditioner based on the outdoor ambient temperature of the air conditioner and the operating current of the equipment in the air conditioner room, and determines the predicted load demand of the air conditioner room as a second demand or a third demand, including: determining the change in the outdoor ambient temperature of the air conditioner room within a second set time period, and determining the change in the operating current of the equipment in the air conditioner room; determining whether the change in the outdoor ambient temperature of the air conditioner room exceeds a set temperature accuracy or the change in the operating current of the equipment in the air conditioner room exceeds a set current accuracy; if it is determined that the change in the outdoor ambient temperature of the air conditioner room exceeds the set temperature accuracy or the change in the operating current of the equipment in the air conditioner room exceeds the set current accuracy, then the predicted load demand of the air conditioner room is determined to be a second demand; if it is determined that the change in the outdoor ambient temperature of the air conditioner room does not exceed the set temperature accuracy or the change in the operating current of the equipment in the air conditioner room does not exceed the set current accuracy, then the predicted load demand of the air conditioner room is determined to be a third demand.

[0015] In some implementations, the control unit determines the predicted load demand of the computer room air conditioner as a first demand or a fourth demand based on the indoor temperature difference of the computer room air conditioner, including: determining whether the indoor temperature difference of the computer room air conditioner is greater than the upper limit of a set temperature range, or determining whether the indoor temperature difference of the computer room air conditioner is less than the lower limit of a set temperature range; if it is determined that the indoor temperature difference of the computer room air conditioner is greater than the upper limit of the set temperature range, then the predicted load demand of the computer room air conditioner is determined as the first demand; if it is determined that the indoor temperature difference of the computer room air conditioner is less than the lower limit of the set temperature range, then the predicted load demand of the computer room air conditioner is determined as the fourth demand.

[0016] In some embodiments, the control unit adjusts the target frequency of the compressor in the computer room air conditioner in advance according to the load demand of the computer room air conditioner, including: determining the load amount of the computer room air conditioner's load demand when the load demand of the computer room air conditioner includes a first demand, a second demand, a third demand, and a fourth demand that decrease sequentially; if the load demand of the computer room air conditioner is determined to be the first demand, then the target frequency of the compressor is determined to be the sum of the compressor's current frequency and a set up frequency value, and the compressor is controlled to operate at the compressor's target frequency; if the load demand of the computer room air conditioner is determined to be the second demand, then the target frequency of the compressor is determined based on the outdoor ambient temperature of the computer room air conditioner and the operating current of the computer room equipment, and the compressor is controlled to operate at the compressor's target frequency; if the load demand of the computer room air conditioner is determined to be the third demand, then the current frequency of the compressor is determined to be the compressor's target frequency, and the compressor is controlled to operate at the compressor's target frequency; if the load demand of the computer room air conditioner is determined to be the fourth demand, then the target frequency of the compressor is determined to be the difference between the compressor's current frequency and a set down frequency value, and the compressor is controlled to operate at the compressor's target frequency.

[0017] In some implementations, the operating current of the data center equipment includes: a recorded value of the operating current of the data center equipment and a detected value of the operating current of the data center equipment; the control unit determines the target frequency of the compressor based on the outdoor ambient temperature of the data center air conditioner and the operating current of the data center equipment, including: determining whether a historical recorded value of the operating current of the data center equipment is 0; if it is determined that a historical recorded value of the operating current of the data center equipment is 0, then setting the current recorded value of the operating current of the data center equipment equal to the current detected value of the operating current of the data center equipment ... If the recorded current value is not 0, then the current recorded operating current value of the computer room equipment is set to half the sum of the historical recorded operating current value of the computer room equipment and the current detected operating current value of the computer room equipment. Based on the correspondence between the set ambient temperature, set frequency, and set operating current, the set operating current that is the same as or within the set current error range of the current recorded operating current value of the computer room equipment, and the set frequency that is the same as or within the set temperature error range of the outdoor ambient temperature of the computer room air conditioner, are determined as the target frequency of the compressor.

[0018] In some embodiments, the control unit is further configured to allow adjustment of the target frequency of the compressor in the computer room air conditioner only after a third set time has elapsed since the target frequency of the compressor in the computer room air conditioner was adjusted.

[0019] In conjunction with the above-mentioned device, the present invention further provides a computer room air conditioner, including: the control device for the computer room air conditioner described above.

[0020] In conjunction with the above method, the present invention further provides a storage medium comprising a stored program, wherein, when the program is executed, the device containing the storage medium is controlled to perform the steps of the above-described control method for a computer room air conditioner.

[0021] In conjunction with the above method, the present invention further provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the above-described control method for a computer room air conditioner.

[0022] Therefore, the solution of this invention, targeting a data center air conditioner, involves detecting the indoor ambient temperature and set temperature of the data center air conditioner, detecting the operating current of the data center equipment, and detecting the outdoor ambient temperature of the data center air conditioner during the energy-saving operation mode of the data center air conditioner. When the difference between the indoor ambient temperature and the set temperature is within the set temperature range, the recorded value of the operating current of the data center equipment is determined. Based on changes in the outdoor ambient temperature or changes in the operating current of the data center equipment, and in conjunction with the recorded value of the operating current of the data center equipment, the target frequency of the compressor is controlled. When the difference between the indoor ambient temperature and the set temperature is not within the set temperature range, the target frequency of the compressor is controlled based on the difference between the indoor ambient temperature and the set temperature. Thus, by combining the operating current of the data center equipment in the data center air conditioner to predict the load demand of the data center air conditioner, the compressor frequency is adjusted in advance to achieve energy-saving effects while ensuring the temperature control of the data center air conditioner.

[0023] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention.

[0024] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0025] Figure 1 This is a flowchart illustrating an embodiment of the control method for a computer room air conditioner according to the present invention;

[0026] Figure 2 This is a flowchart illustrating an embodiment of the method of the present invention for predicting the load demand of the computer room air conditioner based on the indoor ambient temperature, set temperature, outdoor ambient temperature and operating current of the computer room equipment.

[0027] Figure 3 This is a flowchart illustrating an embodiment of the method of the present invention for predicting the load demand of the computer room air conditioner based on the outdoor ambient temperature of the computer room air conditioner and the operating current of the computer room equipment.

[0028] Figure 4 This is a flowchart illustrating an embodiment of the method of the present invention for predicting the load demand of the computer room air conditioner based on the indoor temperature difference of the computer room air conditioner;

[0029] Figure 5 This is a flowchart illustrating an embodiment of the method of the present invention for pre-adjusting the target frequency of the compressor in the computer room air conditioner;

[0030] Figure 6 This is a flowchart illustrating an embodiment of the method of the present invention for determining the target frequency of the compressor based on the outdoor ambient temperature and the operating current of the equipment in the computer room.

[0031] Figure 7 This is a schematic diagram of a structure of an embodiment of the control device for a computer room air conditioner according to the present invention;

[0032] Figure 8 This is a flowchart illustrating a frequency control method based on room load demand under an energy-saving operation mode for computer room air conditioning.

[0033] Figure 9 Table 1 is a matrix data table of the operating current of the equipment.

[0034] Referring to the accompanying drawings, the reference numerals in the embodiments of the present invention are as follows:

[0035] 102 - Acquisition unit; 104 - Control unit. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0037] Considering the enormous power consumption of data center air conditioning, energy-saving measures are necessary to conserve electricity. In relevant solutions, the capacity output control of data center air conditioning (mainly compressor frequency control) typically controls the compressor's operating frequency by combining the difference between the return air temperature detected by the air conditioner and the set temperature, along with the room temperature rise and fall rate. This passive adjustment can easily lead to over-adjustment of the temperature, resulting in energy waste.

[0038] In contrast, the operating environment of computer room air conditioners is relatively simple. Load changes are mainly affected by the heat generated by the equipment, which is generally proportional to the equipment's operating power. Therefore, load prediction can be performed based on the equipment's operating current, allowing for advance adjustment of the operating frequency to achieve a higher degree of matching between the air conditioner and the environment, thus realizing energy savings.

[0039] Therefore, the present invention proposes a control method for a computer room air conditioner, specifically a frequency control method based on room load demand under the energy-saving operation mode of the computer room air conditioner. By controlling the compressor frequency based on the room load demand, low-energy operation is achieved while ensuring the control of the computer room temperature, thus achieving the effect of energy saving.

[0040] According to embodiments of the present invention, a control method for a computer room air conditioner is provided, such as... Figure 1 The diagram shows a flowchart of an embodiment of the method of the present invention. The computer room air conditioner has an energy-saving operation mode. In the solution of the present invention, as shown... Figure 1 As shown, the control method for the computer room air conditioner includes steps S110 to S130.

[0041] In step S110, when the computer room air conditioner is running and in its energy-saving mode, the indoor ambient temperature and set temperature of the computer room air conditioner are acquired, the outdoor ambient temperature of the computer room air conditioner is acquired, and the operating current of the computer room equipment in the environment where the computer room air conditioner is located is acquired. The indoor ambient temperature, set temperature, and outdoor ambient temperature of the computer room air conditioner can all be detected by temperature sensors. The power supply to the computer room is mainly divided into three circuits: one for lighting and daily monitoring; one for dedicated air conditioning; and one for dedicated computer room equipment. The operating current of the computer room equipment, i.e., the current of the computer room equipment, is the total current of the dedicated power supply to the equipment, which can be detected by adding sensors or by communicating with the power distribution cabinet to read the data.

[0042] In step S120, the load demand of the computer room air conditioner is predicted based on the indoor ambient temperature of the computer room air conditioner, the set temperature of the computer room air conditioner, the outdoor ambient temperature of the computer room air conditioner, and the operating current of the computer room equipment; wherein, the load demand of the computer room air conditioner is the load demand of the environment in which the computer room air conditioner is located.

[0043] In step S130, the target frequency of the compressor in the computer room air conditioner is adjusted in advance according to the load demand of the computer room air conditioner, so as to achieve energy saving while ensuring the temperature control of the computer room air conditioner.

[0044] This invention proposes a frequency control scheme based on room load demand for energy-saving operation of a computer room air conditioner. By predicting the air conditioner's adjustment parameters based on the current load, the system proactively controls the air conditioner to enter a high-efficiency operating state, achieving energy-saving operation. Through this frequency control scheme, such as controlling the compressor frequency based on room load demand, low-power operation is achieved while meeting temperature drop requirements, reducing the energy consumption of the computer room air conditioner and thus achieving energy-saving effects.

[0045] In some implementations, the load demand of the computer room air conditioner includes: a first demand, a second demand, a third demand, and a fourth demand, with the load decreasing sequentially.

[0046] The specific process of predicting the load demand of the computer room air conditioner in step S120 based on the indoor ambient temperature of the computer room air conditioner, the set temperature of the computer room air conditioner, the outdoor ambient temperature of the computer room air conditioner, and the operating current of the computer room equipment is described in the following exemplary description.

[0047] The following is combined Figure 2The illustrated flowchart shows an embodiment of the method of the present invention for predicting the load demand of the air conditioner based on the indoor ambient temperature, set temperature, outdoor ambient temperature and operating current of the air conditioner in the computer room. The flowchart further illustrates the specific process of predicting the load demand of the air conditioner in step S120 based on the indoor ambient temperature, set temperature, outdoor ambient temperature and operating current of the air conditioner in the computer room, including steps S210 to S240.

[0048] Step S210: Determine the difference between the indoor ambient temperature of the computer room air conditioner and the set temperature of the computer room air conditioner, and record it as the indoor temperature difference of the computer room air conditioner; wherein, the indoor temperature difference of the computer room air conditioner, such as the indoor ambient temperature T... 内 With the set temperature T 设 Temperature difference ΔT = (T 内 -T 设 ).

[0049] Step S220: Determine whether the indoor temperature difference of the computer room air conditioner is within a set temperature range within a continuous first set time period; wherein, the first set time is such as time t0, and the set temperature range is such as the upper temperature limit T. u And the lower limit of the temperature range is T. d The indoor temperature difference of the computer room air conditioner is within the set temperature range, that is, the indoor temperature difference of the computer room air conditioner is greater than or equal to the lower limit of the set temperature range and less than or equal to the upper limit of the set temperature range.

[0050] Step S230: If it is determined that the indoor temperature difference of the computer room air conditioner is within the set temperature range within a continuous first set time period, then the load demand of the computer room air conditioner is predicted based on the outdoor ambient temperature of the computer room air conditioner and the operating current of the computer room equipment, and the predicted load demand of the computer room air conditioner is determined to be the second demand or the third demand.

[0051] Step S240: If it is determined that the indoor temperature difference of the computer room air conditioner is not within the set temperature range within a continuous first set time period, then the predicted load demand of the computer room air conditioner is determined as either the first demand or the fourth demand based on the indoor temperature difference of the computer room air conditioner.

[0052] Figure 8 This is a flowchart illustrating a frequency control method based on room load demand under an energy-saving operation mode for computer room air conditioning. Figure 8 As shown, a frequency control method based on room load demand in an energy-saving operation mode of a computer room air conditioner includes:

[0053] Step 1: Detect the indoor ambient temperature T over a continuous time period t0. 内 With the set temperature T设 Temperature difference ΔT = (T 内 -T 设 Then proceed to step 2. It is recommended that 1 min ≤ t0 ≤ 10 min, with t0 = 5 min being the preferred value.

[0054] Step 2: Determine if T is satisfied. d ≤△T≤T u If yes, proceed to step 3; otherwise, proceed to step 6 or 7. It is recommended that -2 ≤ T. d ≤0℃, 0≤T u ≤3℃, T is preferred d = -1℃, T u =2℃.

[0055] Step 3: When the ambient temperature and the set temperature are detected continuously for time t0 (recommended 1≤t0≤10min, preferably t0=5min), the temperature difference ΔT = (T 内 -T 设 Satisfying T d ≤△T≤T u When that happens, the currently detected device current value is recorded as A. ij Determine whether A is satisfied. ij =0: If so, proceed to step 31; otherwise, proceed to step 42.

[0056] Among them, A ij The default value is 0A, A ij Precision B A The range is 0.1A to 5A, with 1A recommended. i represents the current outdoor ambient temperature; the accuracy of i is B. i The range is 0.5–2℃, with 1℃ recommended. j represents the current compressor operating frequency; the accuracy of j is B. j The frequency range is 1Hz to 4Hz, with 2Hz recommended.

[0057] Step 31, if A ij If it is 0, then the current A will be... ij Perform a memory update, then proceed to step 4.

[0058] Step 32, if A ij If it is not 0, then take the currently detected A. ij With memory A ij The average value is used as the new memory value, and then step 4 is executed.

[0059] Hall effect sensors or mutual inductance coils can be added to the power supply of the equipment in the computer room to detect the power supply current of the equipment. By predicting room temperature changes through current fluctuations, the air conditioning operation mode can be adjusted in advance. The heat generation of the equipment can be predicted based on its operating current, thereby achieving load forecasting and allowing for advance adjustment of the operating frequency. This results in a higher degree of matching between the air conditioning and the environment, achieving energy savings.

[0060] Theoretically, the temperature of a computer room is directly proportional to the heat dissipation of the equipment, which in turn is directly proportional to its power consumption, which in turn is directly proportional to its operating current. In other words, the room temperature is directly proportional to the operating current of the equipment. Temperature change detection has a lag, while current change detection can be performed in real time. If an increase in the current of the equipment is detected, it can be predicted that the room temperature will rise after a certain period; conversely, if a decrease in the current is detected, it can be predicted that the room temperature will fall after a certain period.

[0061] In the present invention, the load demand of the computer room air conditioner is predicted based on the indoor ambient temperature of the computer room air conditioner, the set temperature of the computer room air conditioner, the outdoor ambient temperature of the computer room air conditioner, and the operating current of the computer room equipment. Then, the compressor frequency is controlled based on the room load demand. Under the condition of meeting the temperature drop requirements, low power consumption operation is achieved, the energy consumption of the computer room air conditioner is reduced, and energy saving effect is achieved.

[0062] In some implementations, the specific process of predicting the load demand of the computer room air conditioner based on the outdoor ambient temperature of the computer room air conditioner and the operating current of the computer room equipment in step S230, and determining the predicted load demand of the computer room air conditioner as a second demand or a third demand, is described in the following exemplary description.

[0063] The following is combined Figure 3 The schematic diagram shown is an embodiment of the method of the present invention for predicting the load demand of the air conditioner based on the outdoor ambient temperature of the air conditioner and the operating current of the equipment in the air conditioner room. The specific process of predicting the load demand of the air conditioner based on the outdoor ambient temperature of the air conditioner and the operating current of the equipment in the air conditioner room in step S230 is further explained, including steps S310 to S340.

[0064] Step S310: Within a second set time period, determine the change in the outdoor ambient temperature of the computer room air conditioner and the change in the operating current of the computer room equipment.

[0065] Step S320: Determine whether the change in the outdoor ambient temperature of the computer room air conditioner exceeds the set temperature accuracy or the change in the operating current of the computer room equipment exceeds the set current accuracy; wherein, the set temperature accuracy is, for example, temperature B. i Set the current accuracy, such as current B. A .

[0066] Step S330: If it is determined that the change in the outdoor ambient temperature of the computer room air conditioner exceeds the set temperature accuracy or the change in the operating current of the computer room equipment exceeds the set current accuracy, then the predicted load demand of the computer room air conditioner is determined as the second demand.

[0067] Step S340: If it is determined that the change in outdoor ambient temperature of the computer room air conditioner exceeds the set temperature accuracy or the change in operating current of the computer room equipment exceeds the set current accuracy, then the predicted load demand of the computer room air conditioner is determined to be the third demand.

[0068] In the present invention, the load demand of the air conditioner is predicted based on the outdoor ambient temperature of the air conditioner and the operating current of the equipment in the air conditioner. The predicted load demand of the air conditioner is determined to be a second demand or a third demand. Then, the compressor frequency is controlled based on the room load demand. While meeting the temperature drop requirements, low power consumption operation is achieved, reducing the energy consumption of the air conditioner and achieving energy saving effect.

[0069] In some implementations, the specific process of determining whether the predicted load demand of the computer room air conditioner is a first demand or a fourth demand based on the indoor temperature difference of the computer room air conditioner in step S240 is described in the following exemplary description.

[0070] The following is combined with Figure 4 The flowchart shown is a schematic diagram of an embodiment of the method of the present invention for predicting the load demand of the air conditioner in the computer room based on the indoor temperature difference of the air conditioner in the computer room. The specific process of predicting the load demand of the air conditioner in the computer room based on the indoor temperature difference in step S240 is further explained, including steps S410 to S430.

[0071] Step S410: Determine whether the indoor temperature difference of the computer room air conditioner is greater than the upper limit of the set temperature range, or determine whether the indoor temperature difference of the computer room air conditioner is less than the lower limit of the set temperature range.

[0072] Step S420: If it is determined that the indoor temperature difference of the computer room air conditioner is greater than the upper limit of the set temperature range, then the predicted load demand of the computer room air conditioner is determined as the first demand.

[0073] Step S440: If it is determined that the indoor temperature difference of the computer room air conditioner is less than the lower limit of the set temperature range, then the predicted load demand of the computer room air conditioner is determined to be the fourth demand.

[0074] In the present invention, the predicted load demand of the computer room air conditioner is determined as either a first demand or a fourth demand based on the indoor temperature difference of the computer room air conditioner. Then, the compressor frequency is controlled based on the room load demand. Under the condition of meeting the temperature drop requirements, low power consumption operation is achieved, reducing the energy consumption of the computer room air conditioner and achieving energy saving effect.

[0075] In some implementations, the specific process of adjusting the target frequency of the compressor in the computer room air conditioner in advance according to the load demand of the computer room air conditioner is described in the following exemplary description.

[0076] The following is combined with Figure 5 The flowchart shown is a schematic diagram of an embodiment of the method of the present invention for adjusting the target frequency of the compressor in the computer room air conditioner in advance. It further illustrates the specific process of adjusting the target frequency of the compressor in the computer room air conditioner in advance in step S130, including steps S510 to S550.

[0077] Step S510: When the load demand of the computer room air conditioner includes a first demand, a second demand, a third demand, and a fourth demand that decrease sequentially, determine the load size of the load demand of the computer room air conditioner.

[0078] Step S520: If the load demand of the computer room air conditioner is determined to be the first demand, then the target frequency of the compressor is determined to be the sum of the current frequency of the compressor and the set up frequency value, and the compressor is controlled to operate at the target frequency of the compressor.

[0079] Step S530: If the load demand of the computer room air conditioner is determined to be the second demand, then the target frequency of the compressor is determined based on the outdoor ambient temperature of the computer room air conditioner and the operating current of the computer room equipment; and the compressor is controlled to operate at the target frequency.

[0080] Step S540: If the load demand of the computer room air conditioner is determined to be the third demand, then the current frequency of the compressor is determined as the target frequency of the compressor, and the compressor is controlled to operate at the target frequency, that is, the compressor is controlled to maintain the current frequency of the compressor.

[0081] Step S550: If the load demand of the computer room air conditioner is determined to be the fourth demand, the target frequency of the compressor is determined to be the difference between the current frequency of the compressor and the set frequency reduction value, and the compressor is controlled to operate at the target frequency of the compressor.

[0082] like Figure 8 As shown, a frequency control method based on room load demand in a data center air conditioning energy-saving operation mode further includes:

[0083] Step 4: Determine if the detected outdoor ambient temperature change exceeds B. i When the change in the operating current of the equipment exceeds B A If yes, proceed to step 5; otherwise, proceed to step 8 to end the control of the compressor frequency adjustment, i.e., maintain the current operation.

[0084] Step 5: If the detected change in outdoor ambient temperature exceeds B... i When the change in the operating current of the equipment exceeds B A When the compressor's target operating frequency F is reached, 目标 Adjust to the current operating current A of the detected device and the closest current A recorded under the current outer loop. ij The corresponding frequency F j That is, F 目标 =F j .

[0085] Step 6: If △T > T is detected u When the compressor's target operating frequency F is reached, 目标 =F 当前 +F 升 Then, proceed to step 8 to finish adjusting the compressor frequency and maintain the current operation. Recommended value: 1 ≤ F 升 ≤4Hz, F is preferred 升 =2Hz. If the room temperature is higher than the control limit, frequency increase should be prioritized to ensure reliability.

[0086] Step 7: If △T < T is detected d When the compressor's target operating frequency F is reached, 目标 =F 当前 -F 降 Then, proceed to step 8 to finish adjusting the compressor frequency and maintain the current operation. Recommended value: 1 ≤ F 降 ≤4Hz, F is preferred 降 =2Hz. When the room temperature is below the control limit, frequency reduction is prioritized to achieve energy saving.

[0087] Step 8: Maintain the current running status.

[0088] In steps 6 and 7, when the difference between the ambient temperature and the set temperature exceeds the allowable tolerance, frequency control is prioritized to adjust the ambient temperature to within the allowable tolerance. All controls are based on ensuring reliable operation. For example, with a set temperature of 27℃ and a control accuracy of 2℃, the room temperature must first be kept within 27±2℃. If this requirement is exceeded, intervention is prioritized to bring the room temperature back to the allowable range before energy-saving adjustments are implemented.

[0089] In the solution of this invention, the above-mentioned logic control is adopted. Although in the early stage of operation after the air conditioning unit is newly installed, the number of memorized Aij values ​​is small, and the initial operation mainly relies on the difference between the ambient temperature and the set temperature to control the compressor's operating frequency, as the operating time increases, the amount of data on the frequency output matched by the air conditioner under different external loops and equipment loads increases. This allows the air conditioner to make corresponding adjustments in time when encountering changes in indoor load or outdoor ambient temperature, avoiding the impact of over-adjustment leading to energy loss. In addition, the update and recording mechanism allows the air conditioner to update its operating status even when its output capacity changes under certain conditions (e.g., dirty filter, dirty heat exchanger, refrigerant leakage), giving the air conditioner a self-learning and adaptive capability.

[0090] In related solutions, air conditioner compressor frequency control typically determines the initial target frequency based on detected inner and outer loop temperatures and the set temperature, and then adjusts it according to temperature fluctuations. Generally, compressor frequency adjustment is relatively lagging. When the room temperature drops, the air conditioner detects the temperature decrease through the return air temperature sensor before adjusting the frequency, resulting in energy waste. The solution of this invention, however, proposes a frequency control scheme based on room load demand, taking into account the operating characteristics of computer room air conditioners and the characteristics of the computer room environment. This scheme achieves low-energy operation while ensuring computer room temperature control, thus achieving energy-saving effects.

[0091] In some implementations, the operating current of the data center equipment includes: a recorded value of the operating current of the data center equipment and a detected value of the operating current of the data center equipment. The recorded value of the operating current of the data center equipment is the operating current value of the data center equipment obtained from historical records in the program, and the detected value of the operating current of the data center equipment is the operating current value of the data center equipment that is currently actually detected.

[0092] The specific process of determining the target frequency of the compressor based on the outdoor ambient temperature of the computer room air conditioner and the operating current of the computer room equipment in step S530 is illustrated in the following exemplary description.

[0093] The following is combined with Figure 6The schematic diagram shows an embodiment of the method of the present invention in which the target frequency of the compressor is determined based on the outdoor ambient temperature and the operating current of the equipment in the computer room. The specific process of determining the target frequency of the compressor based on the outdoor ambient temperature and the operating current of the equipment in the computer room in step S530 is further explained, including steps S610 to S640.

[0094] Step S610: Determine whether the historical recorded value of the operating current of the computer room equipment is 0.

[0095] Step S620: If it is determined that the historical recorded value of the operating current of the computer room equipment is 0, then set the current recorded value of the operating current of the computer room equipment to be equal to the current detected value of the operating current of the computer room equipment.

[0096] Step S630: If it is determined that the historical recorded value of the operating current of the computer room equipment is not 0, then set the current recorded value of the operating current of the computer room equipment to be equal to half of the sum of the historical recorded value of the operating current of the computer room equipment and the current detected value of the operating current of the computer room equipment.

[0097] Step S640: Based on the correspondence between the set ambient temperature, set frequency, and set operating current, determine the target frequency of the compressor as the set operating current that is the same as or within the set current error range of the current recorded value of the current operating current of the computer room equipment, and the set frequency that is the same as or within the set temperature error range of the outdoor ambient temperature of the computer room air conditioner. The correspondence between the set ambient temperature, set frequency, and set operating current is shown in Table 1.

[0098] In the solution of this invention, the correspondence between the set ambient temperature, the set frequency, and the set operating current can be determined by utilizing the memory function of the computer room air conditioner, as detailed below:

[0099] Once the data center air conditioner operates stably (i.e., the compressor frequency remains constant for a certain period, the set temperature of the air conditioner is close to the room temperature, and the room temperature fluctuations are stable within a certain range), the air conditioner's memory function can be used to record the current data of the data center equipment, the air conditioner's operating frequency, and the outdoor ambient temperature. (For model simplification, it is assumed that the data center air conditioner's settings, such as temperature and fan speed, will not change after being set, and the room temperature remains within a certain acceptable fluctuation range from the set temperature; therefore, the air conditioner's settings are not recorded. Of course, if it is assumed that the settings will change, the recording of room stability and fan speed can be added.) It can be assumed that under the current outer loop, using the current operating frequency can achieve a balance between the heat dissipation load of the data center equipment and the cooling load output by the air conditioner under this operating current.

[0100] When an increase or decrease in equipment current or a change in outdoor ambient temperature is detected, if the detected room temperature (return air temperature) remains unchanged, the air conditioner will maintain its current operating state. When the equipment current or outdoor ambient temperature changes to a certain value, causing a change in room temperature, the air conditioner will automatically adjust the compressor operating frequency to achieve rebalancing, and will record the current data of the equipment in the computer room, the air conditioner operating frequency, and the outdoor ambient temperature again. If this combination (outdoor ambient temperature, operating frequency) has already been recorded, the average of the current current value and the recorded current value will be used as the record for that combination.

[0101] The room temperature change is caused by variations in equipment current or outdoor ambient temperature. Specifically, the room temperature change depends on the heat output of the equipment and the air conditioner's output capacity. When the heat output of the equipment increases or decreases (reflected in the equipment's power consumption, which can be indirectly judged by the current consumption of the equipment), changes in the outdoor ambient temperature will affect the air conditioner's output capacity. A higher outdoor temperature will result in a relatively lower output capacity under the same control parameters. Therefore, when factors (equipment load, outdoor environment) change, the room temperature detected by the air conditioner may change. When the change exceeds a certain value (generally with an accuracy of 1°C), the air conditioner's control state will adjust accordingly to achieve a new balance between the air conditioner's output and the room load.

[0102] Adjusting the compressor's operating frequency to achieve rebalancing involves adjusting its operating state (primarily frequency) based on the ambient temperature to balance the air conditioner's output capacity with the room load, thus maintaining the room temperature within a certain range. When the air conditioner's output and room load are balanced, it can be understood that under the current outdoor ambient temperature, the air conditioner, operating at its current frequency, can maintain the room temperature at the set temperature while operating at current A. (Since server room air conditioners are generally unattended, the set state is usually not changed after being set; therefore, the default set state is unchanged here. Of course, changes to the set state can also be added to the control, such as...) Figure 9Table 1 shows the parameters obtained for one of the set states. Additional parameter tables can be added for different set states (the principle is the same). Therefore, this set of states can be recorded and updated in the corresponding table (the horizontal axis represents the outer loop, and the vertical axis represents the frequency). Theoretically, after the air conditioner has been running for a long time, different combinations of data can be obtained. Similarly, under different outer loops and different operating currents of the equipment in the computer room, it can be determined which frequency the air conditioner can operate at to stabilize the room temperature. Of course, due to temperature accuracy issues, there may be records (i.e., this state has already been stabilized) for a certain combination (frequency, outer loop), and the current value may be different. Here, updating the average of the current value and the recorded value as the recorded value allows the air conditioner to continuously update and adapt according to the latest state during actual operation.

[0103] Figure 9 Table 1 is a matrix data table of equipment operating current. For example, with an outer ring temperature accuracy of 1℃ and a compressor frequency accuracy of 2Hz, and an outer ring temperature of 33℃ and a compressor frequency of 30Hz, the recorded equipment operating current is A. 3330 After multiple runs and recordings, a matrix data table can be obtained, with the horizontal axis representing outdoor ambient temperature, the vertical axis representing compressor operating frequency, and the values ​​representing equipment operating current (e.g., ...). Figure 9 As shown in Table 1).

[0104] Under current operating conditions (outdoor ambient temperature, compressor operating frequency), if the detected equipment operating current drops to half the sum of the current operating current and the operating current at the next lower frequency, the operating frequency can be reduced. Conversely, if the detected equipment operating current increases beyond the operating current at the next higher frequency, the operating frequency can be increased. For example, currently, the outer ambient temperature is 35℃, the operating frequency is 60Hz, and the equipment current is 100A. After a while, the equipment operating current drops to 90A. If the air conditioner remains unchanged, the room temperature will likely drop. However, due to the lag in temperature changes, the room temperature detected by the air conditioner may not change until 10 minutes later. Changing the control state at this point results in control lag and is not energy-efficient. If the table shows that a compressor operating frequency of 56Hz is sufficient to maintain the load when the equipment current is 90A, the air conditioner can be controlled to operate at 56Hz in advance to achieve timely regulation and energy saving. The room temperature may briefly rise slightly, but this has minimal impact on the safe operation of the server room and can be ignored.

[0105] In the present invention, the target frequency of the compressor is determined based on the outdoor ambient temperature of the computer room air conditioner and the operating current of the computer room equipment. By using the current operating frequency, the heat dissipation load of the computer room equipment and the cooling load output by the air conditioner under the operating current can be balanced. Thus, the compressor frequency is controlled based on the room load demand, and low power consumption operation is achieved while meeting the temperature drop requirements, thereby reducing the energy consumption of the computer room air conditioner and achieving energy saving effect.

[0106] In some embodiments, the control method for a computer room air conditioner according to the present invention further includes: after adjusting the target frequency of the compressor in the computer room air conditioner, allowing the target frequency of the compressor in the computer room air conditioner to be adjusted again only after a third set time. The third set time is, for example, time t1.

[0107] See Figure 8 In the example shown, in steps 1 to 8, after adjusting the target operating frequency of the compressor, i.e., when the compressor operating frequency changes, it is recommended to maintain the frequency for a time t1 before adjusting it again. This avoids over-adjustment due to frequent adjustments caused by temperature detection lag. A timeframe of 1 min ≤ t1 ≤ 10 min is recommended, with t1 = 3 min being the preferred time.

[0108] The technical solution of this embodiment, targeting the data center air conditioner, detects the indoor ambient temperature and set temperature, the operating current of the data center equipment, and the outdoor ambient temperature under the energy-saving operation mode of the data center air conditioner. When the difference between the indoor ambient temperature and the set temperature is within the set temperature range, the recorded value of the operating current of the data center equipment is determined. Based on changes in the outdoor ambient temperature or changes in the operating current of the data center equipment, and combined with the recorded value of the operating current of the data center equipment, the target frequency of the compressor is controlled. When the difference between the indoor ambient temperature and the set temperature is not within the set temperature range, the target frequency of the compressor is controlled based on the difference between the indoor ambient temperature and the set temperature. Therefore, by combining the operating current of the data center equipment in the data center air conditioner to predict the load demand of the data center air conditioner, the compressor frequency is adjusted in advance to achieve energy-saving effects while ensuring the temperature control of the data center air conditioner.

[0109] According to an embodiment of the present invention, a control device for a data center air conditioner corresponding to a control method for a data center air conditioner is also provided. See also Figure 7 The diagram shows a structural schematic of an embodiment of the device of the present invention. The computer room air conditioner has an energy-saving operation mode, as described in the solution of the present invention. Figure 7 As shown, the control device for the computer room air conditioner includes: an acquisition unit 102 and a control unit 104.

[0110] The acquisition unit 102 is configured to acquire the indoor ambient temperature and set temperature of the computer room air conditioner, the outdoor ambient temperature of the computer room air conditioner, and the operating current of the computer room equipment in the environment where the air conditioner is located, when the air conditioner is running and in energy-saving mode. The indoor ambient temperature, set temperature, and outdoor ambient temperature of the air conditioner can all be detected by temperature sensors. The power supply to the computer room is mainly divided into three circuits: one for lighting and daily monitoring; one for dedicated air conditioning; and one for dedicated computer room equipment. The operating current of the computer room equipment, i.e., the current of the computer room equipment, is the total current of the dedicated power supply to the equipment, which can be detected by adding sensors or by communicating with the power distribution cabinet to read the data. For the specific functions and processing of the acquisition unit 102, please refer to step S110.

[0111] The control unit 104 is configured to predict the load demand of the computer room air conditioner based on the indoor ambient temperature of the computer room air conditioner, the set temperature of the computer room air conditioner, the outdoor ambient temperature of the computer room air conditioner, and the operating current of the computer room equipment; wherein, the load demand of the computer room air conditioner is the load demand of the environment in which the computer room air conditioner is located. The specific functions and processing of this control unit 104 are described in step S120.

[0112] The control unit 104 is further configured to adjust the target frequency of the compressor in the computer room air conditioner in advance according to the load demand of the computer room air conditioner, so as to achieve energy saving while ensuring the temperature control of the computer room air conditioner. The specific functions and processing of the control unit 104 are further described in step S130.

[0113] This invention proposes a frequency control scheme based on room load demand for energy-saving operation of a computer room air conditioner. By predicting the air conditioner's adjustment parameters based on the current load, the system proactively controls the air conditioner to enter a high-efficiency operating state, achieving energy-saving operation. Through this frequency control scheme, such as controlling the compressor frequency based on room load demand, low-power operation is achieved while meeting temperature drop requirements, reducing the energy consumption of the computer room air conditioner and thus achieving energy-saving effects.

[0114] In some implementations, the load demand of the computer room air conditioner includes: a first demand, a second demand, a third demand, and a fourth demand, with the load decreasing sequentially.

[0115] The control unit 104 predicts the load demand of the computer room air conditioner based on the indoor ambient temperature of the computer room air conditioner, the set temperature of the computer room air conditioner, the outdoor ambient temperature of the computer room air conditioner, and the operating current of the computer room equipment, including:

[0116] The control unit 104 is further configured to determine the difference between the indoor ambient temperature of the computer room air conditioner and the set temperature of the computer room air conditioner, denoted as the indoor temperature difference of the computer room air conditioner; wherein, the indoor temperature difference of the computer room air conditioner, such as the indoor ambient temperature T... 内 With the set temperature T 设 Temperature difference ΔT = (T 内 -T 设 For details on the specific functions and processing of the control unit 104, please refer to step S210.

[0117] The control unit 104 is further configured to determine whether the indoor temperature difference of the computer room air conditioner is within a set temperature range for a continuous first set time period; wherein, the first set time is such as time t0, and the set temperature range is such as an upper temperature limit T. u And the lower limit of the temperature range is T. d The indoor temperature difference of the computer room air conditioner is within the set temperature range, that is, the indoor temperature difference of the computer room air conditioner is greater than or equal to the lower limit of the set temperature range and less than or equal to the upper limit of the set temperature range. For the specific functions and processing of the control unit 104, please refer to step S220.

[0118] The control unit 104 is further configured to, if it is determined that the indoor temperature difference of the computer room air conditioner is within a set temperature range for a continuous first set time period, predict the load demand of the computer room air conditioner based on the outdoor ambient temperature of the computer room air conditioner and the operating current of the computer room equipment, and determine that the predicted load demand of the computer room air conditioner is a second demand or a third demand. The specific functions and processing of this control unit 104 are further described in step S230.

[0119] The control unit 104 is further configured to, if it is determined that the indoor temperature difference of the computer room air conditioner does not meet the set temperature range within a continuous first set time period, determine the predicted load demand of the computer room air conditioner as either a first demand or a fourth demand based on the indoor temperature difference of the computer room air conditioner. The specific functions and processing of this control unit 104 are further described in step S240.

[0120] Figure 8 This is a flowchart illustrating a frequency control method based on room load demand under an energy-saving operation mode for computer room air conditioning. Figure 8 As shown, a frequency control method based on room load demand in an energy-saving operation mode of a computer room air conditioner includes:

[0121] Step 1: Detect the indoor ambient temperature T over a continuous time period t0. 内 With the set temperature T 设 Temperature difference ΔT = (T 内 -T 设Then proceed to step 2. It is recommended that 1 min ≤ t0 ≤ 10 min, with t0 = 5 min being the preferred value.

[0122] Step 2: Determine if T is satisfied. d ≤△T≤T u If yes, proceed to step 3; otherwise, proceed to step 6 or 7. It is recommended that -2 ≤ T. d ≤0℃, 0≤T u ≤3℃, T is preferred d = -1℃, T u =2℃.

[0123] Step 3: When the ambient temperature and the set temperature are detected continuously for time t0 (recommended 1≤t0≤10min, preferably t0=5min), the temperature difference ΔT = (T 内 -T 设 Satisfying T d ≤△T≤T u When that happens, the currently detected device current value is recorded as A. ij Determine whether A is satisfied. ij =0: If so, proceed to step 31; otherwise, proceed to step 42.

[0124] Among them, A ij The default value is 0A, A ij Precision B A The range is 0.1A to 5A, with 1A recommended. i represents the current outdoor ambient temperature; the accuracy of i is B. i The range is 0.5–2℃, with 1℃ recommended. j represents the current compressor operating frequency; the accuracy of j is B. j The frequency range is 1Hz to 4Hz, with 2Hz recommended.

[0125] Step 31, if A ij If it is 0, then the current A will be... ij Perform a memory update, then proceed to step 4.

[0126] Step 32, if A ij If it is not 0, then take the currently detected A. ij With memory A ij The average value is used as the new memory value, and then step 4 is executed.

[0127] Hall effect sensors or mutual inductance coils can be added to the power supply of the equipment in the computer room to detect the power supply current of the equipment. By predicting room temperature changes through current fluctuations, the air conditioning operation mode can be adjusted in advance. The heat generation of the equipment can be predicted based on its operating current, thereby achieving load forecasting and allowing for advance adjustment of the operating frequency. This results in a higher degree of matching between the air conditioning and the environment, achieving energy savings.

[0128] Theoretically, the temperature of a computer room is directly proportional to the heat dissipation of the equipment, which in turn is directly proportional to its power consumption, which in turn is directly proportional to its operating current. In other words, the room temperature is directly proportional to the operating current of the equipment. Temperature change detection has a lag, while current change detection can be performed in real time. If an increase in the current of the equipment is detected, it can be predicted that the room temperature will rise after a certain period; conversely, if a decrease in the current is detected, it can be predicted that the room temperature will fall after a certain period.

[0129] In the present invention, the load demand of the computer room air conditioner is predicted based on the indoor ambient temperature of the computer room air conditioner, the set temperature of the computer room air conditioner, the outdoor ambient temperature of the computer room air conditioner, and the operating current of the computer room equipment. Then, the compressor frequency is controlled based on the room load demand. Under the condition of meeting the temperature drop requirements, low power consumption operation is achieved, the energy consumption of the computer room air conditioner is reduced, and energy saving effect is achieved.

[0130] In some embodiments, the control unit 104 predicts the load demand of the computer room air conditioner based on the outdoor ambient temperature and the operating current of the computer room equipment, and determines the predicted load demand of the computer room air conditioner as a second or third demand, including:

[0131] The control unit 104 is further configured to determine the change in outdoor ambient temperature of the computer room air conditioner and the change in operating current of the computer room equipment within a second set time period. The specific functions and processing of the control unit 104 are further described in step S310.

[0132] The control unit 104 is further configured to determine whether the change in the outdoor ambient temperature of the computer room air conditioner exceeds a set temperature accuracy or the change in the operating current of the computer room equipment exceeds a set current accuracy; wherein, the set temperature accuracy is, for example, temperature B. i Set the current accuracy, such as current B. A For details on the specific functions and processing of the control unit 104, please refer to step S320.

[0133] The control unit 104 is further configured to determine the predicted load demand of the computer room air conditioner as the second demand if it is determined that the change in the outdoor ambient temperature of the computer room air conditioner exceeds a set temperature accuracy or the change in the operating current of the computer room equipment exceeds a set current accuracy. The specific functions and processing of this control unit 104 are further described in step S330.

[0134] The control unit 104 is further configured to determine the predicted load demand of the computer room air conditioner as a third demand if it is determined that the change in the outdoor ambient temperature of the computer room air conditioner exceeds the set temperature accuracy or the change in the operating current of the computer room equipment exceeds the set current accuracy. The specific functions and processing of this control unit 104 are further described in step S340.

[0135] In the present invention, the load demand of the air conditioner is predicted based on the outdoor ambient temperature of the air conditioner and the operating current of the equipment in the air conditioner. The predicted load demand of the air conditioner is determined to be a second demand or a third demand. Then, the compressor frequency is controlled based on the room load demand. While meeting the temperature drop requirements, low power consumption operation is achieved, reducing the energy consumption of the air conditioner and achieving energy saving effect.

[0136] In some implementations, the control unit determines the predicted load demand of the computer room air conditioner as a first demand or a fourth demand based on the indoor temperature difference of the computer room air conditioner, including:

[0137] The control unit 104 is further configured to determine whether the indoor temperature difference of the computer room air conditioner is greater than the upper limit of the set temperature range, or to determine whether the indoor temperature difference of the computer room air conditioner is less than the lower limit of the set temperature range. The specific functions and processing of the control unit 104 are further described in step S410.

[0138] The control unit 104 is further configured to determine the predicted load demand of the computer room air conditioner as the first demand if it is determined that the indoor temperature difference of the computer room air conditioner is greater than the upper limit of the set temperature range. The specific functions and processing of the control unit 104 are further described in step S420.

[0139] The control unit 104 is further configured to determine the predicted load demand of the computer room air conditioner as the fourth demand if it is determined that the indoor temperature difference of the computer room air conditioner is less than the lower limit of the set temperature range. The specific functions and processing of this control unit 104 are further described in step S430.

[0140] In the present invention, the predicted load demand of the computer room air conditioner is determined as either a first demand or a fourth demand based on the indoor temperature difference of the computer room air conditioner. Then, the compressor frequency is controlled based on the room load demand. Under the condition of meeting the temperature drop requirements, low power consumption operation is achieved, reducing the energy consumption of the computer room air conditioner and achieving energy saving effect.

[0141] In some embodiments, the control unit 104 adjusts the target frequency of the compressor in the computer room air conditioner in advance according to the load demand of the computer room air conditioner, including:

[0142] The control unit 104 is further configured to determine the load size of the computer room air conditioner's load demand when the load demand includes a first demand, a second demand, a third demand, and a fourth demand that decrease sequentially. The specific functions and processing of the control unit 104 are further described in step S510.

[0143] The control unit 104 is further configured to, if the load demand of the computer room air conditioner is determined to be the first demand, determine the target frequency of the compressor as the sum of the current frequency of the compressor and the set up frequency value, and control the compressor to operate at the target frequency. The specific functions and processing of this control unit 104 are further described in step S520.

[0144] The control unit 104 is further configured to, if the load demand of the computer room air conditioner is determined to be the second demand, determine the target frequency of the compressor based on the outdoor ambient temperature of the computer room air conditioner and the operating current of the computer room equipment; and control the compressor to operate at the target frequency. The specific functions and processing of this control unit 104 are further described in step S530.

[0145] The control unit 104 is further configured to, if it is determined that the load demand of the computer room air conditioner is a third demand, determine the current frequency of the compressor as the target frequency of the compressor, and control the compressor to operate at the target frequency, that is, control the compressor to maintain the current frequency of the compressor. The specific functions and processing of this control unit 104 are further described in step S540.

[0146] The control unit 104 is further configured to, if it is determined that the load demand of the computer room air conditioner is the fourth demand, determine the target frequency of the compressor as the difference between the current frequency of the compressor and the set frequency reduction value, and control the compressor to operate at the target frequency. The specific functions and processing of this control unit 104 are further described in step S550.

[0147] like Figure 8 As shown, a frequency control method based on room load demand in a data center air conditioning energy-saving operation mode further includes:

[0148] Step 4: Determine if the detected outdoor ambient temperature change exceeds B. i When the change in the operating current of the equipment exceeds B A If yes, proceed to step 5; otherwise, proceed to step 8 to end the control of the compressor frequency adjustment, i.e., maintain the current operation.

[0149] Step 5: If the detected change in outdoor ambient temperature exceeds B... i When the change in the operating current of the equipment exceeds BA When the compressor's target operating frequency F is reached, 目标 Adjust to the current operating current A of the detected device and the closest current A recorded under the current outer loop. ij The corresponding frequency F j That is, F 目标 =F j .

[0150] Step 6: If △T > T is detected u When the compressor's target operating frequency F is reached, 目标 =F 当前 +F 升 Then, proceed to step 8 to finish adjusting the compressor frequency and maintain the current operation. Recommended value: 1 ≤ F 升 ≤4Hz, F is preferred 升 =2Hz. If the room temperature is higher than the control limit, frequency increase should be prioritized to ensure reliability.

[0151] Step 7: If △T < T is detected d When the compressor's target operating frequency F is reached, 目标 =F 当前 -F 降 Then, proceed to step 8 to finish adjusting the compressor frequency and maintain the current operation. Recommended value: 1 ≤ F 降 ≤4Hz, F is preferred 降 =2Hz. When the room temperature is below the control limit, frequency reduction is prioritized to achieve energy saving.

[0152] Step 8: Maintain the current running status.

[0153] In steps 6 and 7, when the difference between the ambient temperature and the set temperature exceeds the allowable tolerance, frequency control is prioritized to adjust the ambient temperature to within the allowable tolerance. All controls are based on ensuring reliable operation. For example, with a set temperature of 27℃ and a control accuracy of 2℃, the room temperature must first be kept within 27±2℃. If this requirement is exceeded, intervention is prioritized to bring the room temperature back to the allowable range before energy-saving control is implemented.

[0154] In the solution of this invention, the above-mentioned logic control is adopted. Although in the early stage of operation after the air conditioning unit is newly installed, the number of memorized Aij values ​​is small, and the initial operation mainly relies on the difference between the ambient temperature and the set temperature to control the compressor's operating frequency, as the operating time increases, the amount of data on the frequency output matched by the air conditioner under different external loops and equipment loads increases. This allows the air conditioner to make corresponding adjustments in time when encountering changes in indoor load or outdoor ambient temperature, avoiding the impact of over-adjustment leading to energy loss. In addition, the update and recording mechanism allows the air conditioner to update its operating status even when its output capacity changes under certain conditions (e.g., dirty filter, dirty heat exchanger, refrigerant leakage), giving the air conditioner a self-learning and adaptive capability.

[0155] In related solutions, air conditioner compressor frequency control typically determines the initial target frequency based on detected inner and outer loop temperatures and the set temperature, and then adjusts it according to temperature fluctuations. Generally, compressor frequency adjustment is relatively lagging. When the room temperature drops, the air conditioner detects the temperature decrease through the return air temperature sensor before adjusting the frequency, resulting in energy waste. The solution of this invention, however, proposes a frequency control scheme based on room load demand, taking into account the operating characteristics of computer room air conditioners and the characteristics of the computer room environment. This scheme achieves low-energy operation while ensuring computer room temperature control, thus achieving energy-saving effects.

[0156] In some implementations, the operating current of the data center equipment includes: a recorded value of the operating current of the data center equipment and a detected value of the operating current of the data center equipment. The recorded value of the operating current of the data center equipment is the operating current value of the data center equipment obtained from historical records in the program, and the detected value of the operating current of the data center equipment is the operating current value of the data center equipment that is currently actually detected.

[0157] The control unit 104 determines the target frequency of the compressor based on the outdoor ambient temperature of the computer room air conditioner and the operating current of the computer room equipment, including:

[0158] The control unit 104 is further configured to determine whether the recorded value of the historical operating current of the computer room equipment is 0. The specific functions and processing of the control unit 104 are further described in step S610.

[0159] The control unit 104 is further configured to, if it is determined that the recorded value of the historical operating current of the computer room equipment is 0, set the current recorded value of the operating current of the computer room equipment to be equal to the current detected value of the operating current of the computer room equipment. The specific functions and processing of this control unit 104 are further described in step S620.

[0160] The control unit 104 is further configured to, if it is determined that the historical recorded value of the operating current of the computer room equipment is not 0, set the current recorded value of the operating current of the computer room equipment to half the sum of the historical recorded value of the operating current of the computer room equipment and the current detected value of the operating current of the computer room equipment. The specific functions and processing of this control unit 104 are further described in step S630.

[0161] The control unit 104 is further configured to determine the target frequency of the compressor based on the correspondence between the set ambient temperature, set frequency, and set operating current. Specifically, it determines the target operating current of the compressor based on the set operating current that is the same as or within the set current error range of the current recorded value of the current operating current of the computer room equipment, and the set frequency corresponding to the set ambient temperature that is the same as or within the set temperature error range of the outdoor ambient temperature of the computer room air conditioner. The correspondence between the set ambient temperature, set frequency, and set operating current is shown in Table 1. The specific functions and processing of the control unit 104 are further described in step S640.

[0162] In the solution of this invention, the correspondence between the set ambient temperature, the set frequency, and the set operating current can be determined by utilizing the memory function of the computer room air conditioner, as detailed below:

[0163] Once the data center air conditioner operates stably (i.e., the compressor frequency remains constant for a certain period, the set temperature of the air conditioner is close to the room temperature, and the room temperature fluctuations are stable within a certain range), the air conditioner's memory function can be used to record the current data of the data center equipment, the air conditioner's operating frequency, and the outdoor ambient temperature. (For model simplification, it is assumed that the data center air conditioner's settings, such as temperature and fan speed, will not change after being set, and the room temperature remains within a certain acceptable fluctuation range from the set temperature; therefore, the air conditioner's settings are not recorded. Of course, if it is assumed that the settings will change, the recording of room stability and fan speed can be added.) It can be assumed that under the current outer loop, using the current operating frequency can achieve a balance between the heat dissipation load of the data center equipment and the cooling load output by the air conditioner under this operating current.

[0164] When an increase or decrease in equipment current or a change in outdoor ambient temperature is detected, if the detected room temperature (return air temperature) remains unchanged, the air conditioner will maintain its current operating state. When the equipment current or outdoor ambient temperature changes to a certain value, causing a change in room temperature, the air conditioner will automatically adjust the compressor operating frequency to achieve rebalancing, and will record the current data of the equipment in the computer room, the air conditioner operating frequency, and the outdoor ambient temperature again. If this combination (outdoor ambient temperature, operating frequency) has already been recorded, the average of the current current value and the recorded current value will be used as the record for that combination.

[0165] The room temperature change is caused by variations in equipment current or outdoor ambient temperature. Specifically, the room temperature change depends on the heat output of the equipment and the air conditioner's output capacity. When the heat output of the equipment increases or decreases (reflected in the equipment's power consumption, which can be indirectly judged by the current consumption of the equipment), changes in the outdoor ambient temperature will affect the air conditioner's output capacity. A higher outdoor temperature will result in a relatively lower output capacity under the same control parameters. Therefore, when factors (equipment load, outdoor environment) change, the room temperature detected by the air conditioner may change. When the change exceeds a certain value (generally with an accuracy of 1°C), the air conditioner's control state will adjust accordingly to achieve a new balance between the air conditioner's output and the room load.

[0166] Adjusting the compressor's operating frequency to achieve rebalancing involves adjusting its operating state (primarily frequency) based on the ambient temperature to balance the air conditioner's output capacity with the room load, thus maintaining the room temperature within a certain range. When the air conditioner's output and room load are balanced, it can be understood that under the current outdoor ambient temperature, the air conditioner, operating at its current frequency, can maintain the room temperature at the set temperature while operating at current A. (Since server room air conditioners are generally unattended, the set state is usually not changed after being set; therefore, the default set state is unchanged here. Of course, changes to the set state can also be added to the control, such as...) Figure 9 Table 1 shows the parameters obtained for one of the set states. Additional parameter tables can be added for different set states (the principle is the same). Therefore, this set of states can be recorded and updated in the corresponding table (the horizontal axis represents the outer loop, and the vertical axis represents the frequency). Theoretically, after the air conditioner has been running for a long time, different combinations of data can be obtained. Similarly, under different outer loops and different operating currents of the equipment in the computer room, it can be determined which frequency the air conditioner can operate at to stabilize the room temperature. Of course, due to temperature accuracy issues, there may be records (i.e., this state has already been stabilized) for a certain combination (frequency, outer loop), and the current value may be different. Here, updating the average of the current value and the recorded value as the recorded value allows the air conditioner to continuously update and adapt according to the latest state during actual operation.

[0167] Figure 9 Table 1 is a matrix data table of equipment operating current. For example, when the outer ring temperature is 33℃ and the compressor frequency is 30Hz, the recorded data of the equipment operating current is A. 3330 After multiple runs and recordings, a matrix data table can be obtained, with the horizontal axis representing outdoor ambient temperature, the vertical axis representing compressor operating frequency, and the values ​​representing equipment operating current (e.g., ...). Figure 9 As shown in Table 1).

[0168] Under current operating conditions (outdoor ambient temperature, compressor operating frequency), if the detected equipment operating current drops to half the sum of the current operating current and the operating current at the next lower frequency, the operating frequency can be reduced. Conversely, if the detected equipment operating current increases beyond the operating current at the next higher frequency, the operating frequency can be increased. For example, currently, the outer ambient temperature is 35℃, the operating frequency is 60Hz, and the equipment current is 100A. After a while, the equipment operating current drops to 90A. If the air conditioner remains unchanged, the room temperature will likely drop. However, due to the lag in temperature changes, the room temperature detected by the air conditioner may not change until 10 minutes later. Changing the control state at this point results in control lag and is not energy-efficient. If the table shows that a compressor operating frequency of 56Hz is sufficient to maintain the load when the equipment current is 90A, the air conditioner can be controlled to operate at 56Hz in advance to achieve timely regulation and energy saving. The room temperature may briefly rise slightly, but this has minimal impact on the safe operation of the server room and can be ignored.

[0169] In the present invention, the target frequency of the compressor is determined based on the outdoor ambient temperature of the computer room air conditioner and the operating current of the computer room equipment. By using the current operating frequency, the heat dissipation load of the computer room equipment and the cooling load output by the air conditioner under the operating current can be balanced. Thus, the compressor frequency is controlled based on the room load demand, and low power consumption operation is achieved while meeting the temperature drop requirements, thereby reducing the energy consumption of the computer room air conditioner and achieving energy saving effect.

[0170] In some embodiments, the control device for the computer room air conditioner according to the present invention further includes: the control unit 104 is further configured to allow adjustment of the target frequency of the compressor in the computer room air conditioner only after a third set time has elapsed since the target frequency of the compressor in the computer room air conditioner was adjusted. The third set time is, for example, time t1.

[0171] See Figure 8 In the example shown, in steps 1 to 8, after adjusting the target operating frequency of the compressor, i.e., when the compressor operating frequency changes, it is recommended to maintain the frequency for a time t1 before adjusting it again. This avoids over-adjustment due to frequent adjustments caused by temperature detection lag. A timeframe of 1 min ≤ t1 ≤ 10 min is recommended, with t1 = 3 min being the preferred time.

[0172] Since the processing and functions implemented by the device in this embodiment are basically the same as the embodiments, principles and examples of the aforementioned methods, any details not covered in the description of this embodiment can be found in the relevant descriptions in the aforementioned embodiments, and will not be repeated here.

[0173] According to an embodiment of the present invention, a data center air conditioner corresponding to a control device for a data center air conditioner is also provided. This data center air conditioner may include the control device for the data center air conditioner described above.

[0174] Since the processing and functions implemented by the computer room air conditioner in this embodiment are basically the same as the embodiments, principles and examples of the aforementioned device, any details not covered in the description of this embodiment can be found in the relevant descriptions in the aforementioned embodiments, and will not be repeated here.

[0175] According to an embodiment of the present invention, a computer program product corresponding to the control method for a computer room air conditioner is also provided, comprising a computer program that, when executed by a processor, implements the steps of the control method for a computer room air conditioner described above.

[0176] Since the processing and functions implemented by the product in this embodiment are basically the same as the embodiments, principles and examples of the aforementioned methods, any details not covered in the description of this embodiment can be found in the relevant descriptions in the aforementioned embodiments, and will not be repeated here.

[0177] According to an embodiment of the present invention, a storage medium corresponding to a control method for a computer room air conditioner is also provided. The storage medium includes a stored program, wherein, when the program is executed, the device where the storage medium is located executes the steps of the control method for the computer room air conditioner described above.

[0178] Since the processing and functions implemented by the storage medium in this embodiment are basically the same as the embodiments, principles and examples of the aforementioned methods, any details not covered in this embodiment can be found in the relevant descriptions in the aforementioned embodiments, and will not be repeated here.

[0179] In summary, it is readily understood by those skilled in the art that, without conflict, the aforementioned advantageous methods can be freely combined and superimposed.

[0180] The above description is merely an embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A control method for a computer room air conditioner, characterized in that, include: When the computer room air conditioner is running, the indoor ambient temperature of the computer room air conditioner and the set temperature of the computer room air conditioner are obtained, the outdoor ambient temperature of the computer room air conditioner is obtained, and the operating current of the computer room equipment in the environment where the computer room air conditioner is located is obtained. Based on the indoor ambient temperature of the computer room air conditioner, the set temperature of the computer room air conditioner, the outdoor ambient temperature of the computer room air conditioner, and the operating current of the computer room equipment, the load demand of the computer room air conditioner is predicted. Based on the load requirements of the computer room air conditioner, adjust the target frequency of the compressor in the computer room air conditioner in advance; When the difference between the indoor ambient temperature and the set temperature is within the set temperature range, the recorded value of the operating current of the equipment in the computer room is determined. Based on the changes in the outdoor ambient temperature or the changes in the operating current of the equipment in the computer room, the target frequency of the compressor is controlled in conjunction with the recorded value of the operating current of the equipment in the computer room. When the difference between the indoor ambient temperature and the set temperature is not within the set temperature range, the target frequency of the compressor is controlled based on the difference between the indoor ambient temperature and the set temperature.

2. The control method for a computer room air conditioner according to claim 1, characterized in that, The load requirements of the computer room air conditioning include: a first requirement, a second requirement, a third requirement, and a fourth requirement, with the load decreasing sequentially. Based on the indoor ambient temperature of the computer room air conditioner, the set temperature of the computer room air conditioner, the outdoor ambient temperature of the computer room air conditioner, and the operating current of the computer room equipment, the load demand of the computer room air conditioner is predicted, including: The difference between the indoor ambient temperature of the computer room air conditioner and the set temperature of the computer room air conditioner is determined and recorded as the indoor temperature difference of the computer room air conditioner. Determine whether the indoor temperature difference of the computer room air conditioner is within the set temperature range within a continuous first set time period; If it is determined that the indoor temperature difference of the computer room air conditioner is within the set temperature range within a continuous first set time period, then the load demand of the computer room air conditioner is predicted based on the outdoor ambient temperature of the computer room air conditioner and the operating current of the computer room equipment, and the predicted load demand of the computer room air conditioner is determined to be the second demand or the third demand. If it is determined that the indoor temperature difference of the computer room air conditioner does not meet the set temperature range within a continuous first set time period, then the predicted load demand of the computer room air conditioner is determined as either the first demand or the fourth demand based on the indoor temperature difference of the computer room air conditioner.

3. The control method for a computer room air conditioner according to claim 2, characterized in that, Based on the outdoor ambient temperature of the computer room air conditioner and the operating current of the computer room equipment, the load demand of the computer room air conditioner is predicted, and the predicted load demand of the computer room air conditioner is determined to be a second demand or a third demand, including: Within a second set time period, the change in outdoor ambient temperature of the computer room air conditioner is determined, and the change in operating current of the computer room equipment is also determined. Determine whether the change in the outdoor ambient temperature of the computer room air conditioner exceeds the set temperature accuracy or the change in the operating current of the computer room equipment exceeds the set current accuracy. If it is determined that the change in the outdoor ambient temperature of the computer room air conditioner exceeds the set temperature accuracy or the change in the operating current of the computer room equipment exceeds the set current accuracy, then the predicted load demand of the computer room air conditioner is determined as the second demand. If it is determined that the change in outdoor ambient temperature of the computer room air conditioner exceeds the set temperature accuracy or the change in operating current of the computer room equipment exceeds the set current accuracy, then the predicted load demand of the computer room air conditioner is determined to be the third demand.

4. The control method for a computer room air conditioner according to claim 2, characterized in that, Based on the indoor temperature difference of the computer room air conditioner, determine the predicted load demand of the computer room air conditioner as either the first demand or the fourth demand, including: Determine whether the indoor temperature difference of the computer room air conditioner is greater than the upper limit of the set temperature range, or determine whether the indoor temperature difference of the computer room air conditioner is less than the lower limit of the set temperature range. If it is determined that the indoor temperature difference of the computer room air conditioner is greater than the upper limit of the set temperature range, then the predicted load demand of the computer room air conditioner is determined as the first demand. If it is determined that the indoor temperature difference of the computer room air conditioner is less than the lower limit of the set temperature range, then the predicted load demand of the computer room air conditioner is determined to be the fourth demand.

5. The control method for a computer room air conditioner according to any one of claims 1 to 4, characterized in that, Based on the load demand of the computer room air conditioning, the target frequency of the compressor in the computer room air conditioning is adjusted in advance, including: When the load demand of the computer room air conditioner includes a first demand, a second demand, a third demand, and a fourth demand that decrease sequentially, determine the load size of the load demand of the computer room air conditioner. If the load demand of the computer room air conditioner is determined to be the first demand, then the target frequency of the compressor is determined to be the sum of the current frequency of the compressor and the set frequency increase value, and the compressor is controlled to operate at the target frequency of the compressor. If the load demand of the computer room air conditioner is determined to be the second demand, then the target frequency of the compressor is determined based on the outdoor ambient temperature of the computer room air conditioner and the operating current of the computer room equipment; and the compressor is controlled to operate at the target frequency. If the load demand of the computer room air conditioner is determined to be the third demand, then the current frequency of the compressor is determined as the target frequency of the compressor, and the compressor is controlled to operate at the target frequency. If the load requirement of the computer room air conditioner is determined to be the fourth requirement, the target frequency of the compressor is determined to be the difference between the current frequency of the compressor and the set frequency reduction value, and the compressor is controlled to operate at the target frequency.

6. The control method for a computer room air conditioner according to claim 5, characterized in that, The operating current of the computer room equipment includes: the recorded value of the operating current of the computer room equipment, and the detected value of the operating current of the computer room equipment; The target frequency of the compressor is determined based on the outdoor ambient temperature of the computer room air conditioner and the operating current of the computer room equipment, including: Determine whether the recorded value of the operating current of the equipment in the computer room in the past was 0; If it is determined that the historical recorded value of the operating current of the computer room equipment is 0, then the current recorded value of the operating current of the computer room equipment is set to be equal to the current detected value of the operating current of the computer room equipment. If it is determined that the historical recorded value of the operating current of the computer room equipment is not 0, then the current recorded value of the operating current of the computer room equipment is set to half the sum of the historical recorded value of the operating current of the computer room equipment and the current detected value of the operating current of the computer room equipment. Based on the correspondence between the set ambient temperature, set frequency, and set operating current, the set operating current that is the same as or within the set current error range of the current recorded value of the current operating current of the computer room equipment, and the set frequency that is the same as or within the set temperature error range of the outdoor ambient temperature of the computer room air conditioner, are determined as the target frequency of the compressor.

7. The control method for a computer room air conditioner according to any one of claims 1 to 4 and 6, characterized in that, Also includes: After adjusting the target frequency of the compressor in the computer room air conditioner, the target frequency of the compressor in the computer room air conditioner can only be adjusted again after a third set time.

8. The control method for a computer room air conditioner according to claim 5, characterized in that, Also includes: After adjusting the target frequency of the compressor in the computer room air conditioner, the target frequency of the compressor in the computer room air conditioner can only be adjusted again after a third set time.

9. A control device for a computer room air conditioner, wherein the control method for a computer room air conditioner as described in any one of claims 1 to 8 is used for control, characterized in that, include: The acquisition unit is configured to acquire the indoor ambient temperature of the computer room air conditioner and the set temperature of the computer room air conditioner, acquire the outdoor ambient temperature of the computer room air conditioner, and acquire the operating current of the computer room equipment in the environment where the computer room air conditioner is located, when the computer room air conditioner is running. The control unit is configured to predict the load demand of the computer room air conditioner based on the indoor ambient temperature of the computer room air conditioner, the set temperature of the computer room air conditioner, the outdoor ambient temperature of the computer room air conditioner, and the operating current of the computer room equipment. The control unit is also configured to adjust the target frequency of the compressor in the computer room air conditioner in advance according to the load demand of the computer room air conditioner.

10. A computer room air conditioner, characterized in that, include: The control device for the computer room air conditioner as described in claim 9.

11. A storage medium, characterized in that, The storage medium includes a stored program, wherein, when the program is executed, it controls the device containing the storage medium to perform the control method for the computer room air conditioner as described in any one of claims 1 to 8.

12. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps of the control method for the computer room air conditioner as described in any one of claims 1 to 8.

Images