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

Abstract

The invention discloses a machine room air conditioner and a control method and device thereof, a storage medium and a computer program product.The method comprises the steps that under the condition that the machine room air conditioner operates, the indoor environment temperature of the machine room air conditioner and the set temperature of the machine room air conditioner are obtained, and the outdoor environment temperature of the machine room air conditioner is obtained; the working current of machine room equipment in the environment where the machine room air conditioner is located is obtained; according to the indoor environment temperature of the machine room air conditioner, the set temperature of the machine room air conditioner, the outdoor environment temperature of the machine room air conditioner and the working current of the machine room equipment, the load requirement of the machine room air conditioner is predicted; and according to the load requirement of the machine room air conditioner, the target frequency of a compressor in the machine room air conditioner is adjusted in advance. According to the scheme, the load demand of the machine room air conditioner is predicted by combining the working current of the machine room equipment in the machine room air conditioner, the frequency of the compressor is adjusted in advance, and the energy-saving effect is achieved under the condition that temperature control of the machine room air conditioner is guaranteed.

Description

Technical Field

[0001] The present invention belongs to the technical field of computer room air conditioners, and specifically relates to a control method, device, computer room air conditioner, storage medium and computer program product for a computer room air conditioner, and more particularly to a frequency control method, device, computer room air conditioner, storage medium and computer program product based on room load demand in an energy-saving operation mode of a computer room air conditioner. Background Art

[0002] Computer room air conditioners are primarily used to cool the equipment within the room, primarily communications servers. Because these devices typically generate constant heat, computer room air conditioners operate continuously. Computer room air conditioners consume significant amounts of electricity, accounting for approximately 40% to 60% of the total power consumption, posing significant potential for energy savings.

[0003] The above content is only used to assist in understanding the technical solution of the present invention and does not constitute an admission that the above content is prior art. Summary of the Invention

[0004] The object of the present invention is to provide a control method, device, computer room air conditioner, storage medium and computer program product for a computer room air conditioner to solve the problem that the power consumption of the computer room air conditioner is huge and energy-saving measures need to be taken to save power consumption. The method achieves the effect of predicting the load demand of the computer room air conditioner by combining the working current of the computer room equipment in the computer room air conditioner, adjusting the frequency of the compressor in advance, and achieving energy saving while ensuring the temperature control of the computer room air conditioner.

[0005] The present invention provides a control method for a computer room air conditioner. When the computer room air conditioner is running, the method comprises: obtaining an indoor ambient temperature of the computer room air conditioner, a set temperature of the computer room air conditioner, an outdoor ambient temperature of the computer room air conditioner, and an operating current of computer room equipment in an environment where the computer room air conditioner is located; predicting a 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; and adjusting a target frequency of a compressor in the computer room air conditioner in advance based on the load demand of the computer room air conditioner.

[0006] In some embodiments, the load demand of the computer room air conditioner includes: a first demand, a second demand, a third demand, and a fourth demand with load amounts decreasing in sequence; predicting 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: determining the difference between the indoor ambient temperature of the computer room air conditioner and the set temperature of the computer room air conditioner, recorded as the indoor temperature difference of the computer room air conditioner; determining whether the indoor temperature difference of the computer room air conditioner is within a 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, then the load demand of the computer room air conditioner is predicted according to 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, then the predicted load demand of the computer room air conditioner is determined to be the first demand or the fourth demand according to the indoor temperature difference of the computer room air conditioner.

[0007] In some embodiments, 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, including: determining 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 within a second set time; determining 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 determining that the predicted load demand of the computer room air conditioner is the second 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, then determining that the predicted load demand of the computer room air conditioner is the third demand.

[0008] In some embodiments, determining whether the predicted load demand of the computer room air conditioner is the first demand or the 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 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, determining that the predicted load demand of the computer room air conditioner is 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, determining that the predicted load demand of the computer room air conditioner is the fourth demand.

[0009] In some embodiments, adjusting the target frequency of the compressor in the computer room air conditioner in advance based on the load demand of the computer room air conditioner includes: determining the load magnitude of the load demand of the computer room air conditioner when the load demand of the computer room air conditioner includes a first demand, a second demand, a third demand, and a fourth demand in descending order; if the load demand of the computer room air conditioner is determined to be the first demand, determining the target frequency of the compressor as the sum of the current frequency of the compressor and a set frequency increase value, and controlling the compressor 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, 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; and controlling the compressor to operate at the target frequency of the compressor; if the load demand of the computer room air conditioner is determined to be the third demand, determining the current frequency of the compressor as the target frequency of the compressor, and controlling the compressor to operate at the target frequency of the compressor; if the load demand of the computer room air conditioner is determined to be the fourth demand, determining the target frequency of the compressor as the difference between the current frequency of the compressor and the set frequency reduction value, and controlling the compressor to operate at the target frequency of the compressor.

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

[0011] In some implementations, the method 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 after a third set time has passed.

[0012] Matching the above method, the present invention further provides a control device for a computer room air conditioner, comprising: an acquisition unit, configured to, when the computer room air conditioner is running, 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; a control unit, 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 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.

[0013] In some embodiments, the load demand of the computer room air conditioner includes: a first demand, a second demand, a third demand, and a fourth demand with a load amount decreasing in sequence; the control unit predicts the load demand of the computer room air conditioner according to 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 working current of the computer room equipment, including: determining the difference between the indoor ambient temperature of the computer room air conditioner and the set temperature of the computer room air conditioner, recorded as the indoor temperature difference of the computer room air conditioner; determining whether the indoor temperature of the computer room air conditioner is met within a continuous first set time. the temperature difference between the indoor and outdoor environments of the computer room air conditioner and the operating current of the computer room equipment is within the set temperature range; if it is determined that the temperature difference between the indoor and outdoor environments of the computer room air conditioner is within the set temperature range for a continuous first set time, the load demand of the computer room air conditioner is predicted according to 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 temperature difference between the indoor and outdoor environments of the computer room air conditioner is not within the set temperature range for a continuous first set time, the predicted load demand of the computer room air conditioner is determined to be the first demand or the fourth demand according to the indoor temperature difference of the computer room air conditioner.

[0014] In some embodiments, the control unit predicts 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 determines that the predicted load demand of the computer room air conditioner is the second demand or the third demand, including: determining 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 within a second set time; determining 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 determining that the predicted load demand of the computer room air conditioner is the second 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, then determining that the predicted load demand of the computer room air conditioner is the third demand.

[0015] In some embodiments, the control unit determines whether the predicted load demand of the computer room air conditioner is the first demand or the 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 the set temperature range, or determining 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 determining that the predicted load demand of the computer room air conditioner is 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 determining that the predicted load demand of the computer room air conditioner is 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 based on the load demand of the computer room air conditioner, including: determining the load magnitude of the load demand of the computer room air conditioner when the load demand of the computer room air conditioner includes a first demand, a second demand, a third demand, and a fourth demand in descending order; if the load demand of the computer room air conditioner is determined to be the first demand, determining the target frequency of the compressor as the sum of the current frequency of the compressor and a set frequency increase value, and controlling the compressor 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, 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; and controlling the compressor to operate at the target frequency of the compressor; if the load demand of the computer room air conditioner is determined to be the third demand, determining the current frequency of the compressor as the target frequency of the compressor, and controlling the compressor to operate at the target frequency of the compressor; if the load demand of the computer room air conditioner is determined to be the fourth demand, determining the target frequency of the compressor as the difference between the current frequency of the compressor and the set frequency reduction value, and controlling the compressor to operate at the target frequency of the compressor.

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

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

[0019] Matching the above device, the present invention further provides a computer room air conditioner, including: the control device of the computer room air conditioner described above.

[0020] In accordance with the above method, the present invention further provides a storage medium comprising a stored program, wherein when the program is running, the device where the storage medium is located is controlled to execute the steps of the above-mentioned method for controlling the computer room air conditioner.

[0021] In accordance with the above method, the present invention further provides a computer program product, comprising a computer program, which implements the steps of the above method for controlling the computer room air conditioner when executed by a processor.

[0022] Therefore, the solution of the present invention, for a computer room air conditioner, in the energy-saving operation mode of the computer room air conditioner, detects the indoor ambient temperature and the set temperature of the computer room air conditioner, detects the working current of the computer room equipment, and detects the outdoor ambient temperature of the computer room air conditioner; when the difference between the indoor ambient temperature and the set temperature is within the set temperature range, determines the recorded value of the working current of the computer room equipment, and controls the target frequency of the compressor based on the change in the outdoor ambient temperature or the change in the working current of the computer room equipment in combination with the recorded value of the working current of the computer room equipment; when the difference between the indoor ambient temperature and the set temperature is not within the set temperature range, controls the target frequency of the compressor based on the difference between the indoor ambient temperature and the set temperature; thereby, by predicting the load demand of the computer room air conditioner in combination with the working current of the computer room equipment in the computer room air conditioner, the frequency of the compressor is adjusted in advance to achieve energy saving effects while ensuring the temperature control of the computer room air conditioner.

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

[0024] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A flow chart of an embodiment of a method for controlling a computer room air conditioner according to the present invention;

[0026] Figure 2 A flow chart of an embodiment of the method of the present invention for predicting the load demand of the computer room air conditioner according to the indoor ambient temperature, set temperature, outdoor ambient temperature and operating current of the computer room equipment of the computer room air conditioner;

[0027] Figure 3 A flow chart of an embodiment of the method of the present invention for predicting the load demand of the computer room air conditioner according to the outdoor ambient temperature of the computer room air conditioner and the operating current of the equipment in the computer room;

[0028] Figure 4 1. A flow chart of an embodiment of the method of the present invention for predicting the load demand of the computer room air conditioner according to the indoor temperature difference of the computer room air conditioner;

[0029] Figure 5 This is a flow chart of 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 flow chart of an embodiment of the method of the present invention for determining the target frequency of the compressor according to the outdoor ambient temperature and the operating current of the equipment in the computer room;

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

[0032] Figure 8 Schematic diagram of a flow chart of a frequency control method based on room load demand in energy-saving operation mode of a computer room air conditioner;

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

[0034] In conjunction with the accompanying drawings, the reference numerals in the embodiments of the present invention are as follows:

[0035] 102 - acquisition unit; 104 - control unit. DETAILED DESCRIPTION

[0036] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and corresponding drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] Considering the significant power consumption of computer room air conditioners, energy-saving measures are necessary to reduce this consumption. In related solutions, computer room air conditioner output control (primarily compressor frequency control) typically uses the difference between the return air temperature detected by the computer room air conditioner and the set temperature, combined with the room temperature rise and fall rates, to control the compressor operating frequency. This passive adjustment method can easily lead to temperature overshoot and energy waste.

[0038] Computer room air conditioners, however, operate in a relatively simple environment. Load fluctuations are primarily affected by the heat generated by the equipment, which is generally proportional to its operating power. Therefore, load forecasting based on the equipment's operating current allows for pre-emptive frequency adjustments, achieving a better match between the air conditioner and the environment and ultimately saving energy.

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

[0040] According to an embodiment of the present invention, a method for controlling a computer room air conditioner is provided. Figure 1 The flow chart of an embodiment of the method of the present invention is shown in FIG. The computer room air conditioner has an energy-saving operation mode. In the solution of the present invention, Figure 1 As shown, the control method of the computer room air conditioner includes: steps S110 to S130.

[0041] In step S110, when the computer room air conditioner is running and in the energy-saving operation mode of the computer room air conditioner, 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 working current of the computer room equipment in the environment where the computer room air conditioner is located is obtained; wherein, the indoor ambient temperature of the computer room air conditioner, the set temperature of the computer room air conditioner, and the outdoor ambient temperature of the computer room air conditioner can all be detected by temperature sensors. The power supply of the computer room is mainly divided into three routes: one is for lighting and monitoring daily electricity; one is for air conditioning-only power supply; and one is for computer room equipment-only power supply. The working current of the computer room equipment, that is, the current of the computer room equipment, is the total current of the dedicated power supply current of the detection equipment, which can be detected by installing a sensor or communicating with the distribution cabinet to read 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 effect while ensuring the temperature control of the computer room air conditioner.

[0044] The present invention proposes a frequency control scheme based on room load demand for energy-saving operation of computer room air conditioners. This scheme predicts air conditioning adjustment parameters based on current load, preemptively controlling the air conditioner to enter a high-efficiency operating state and achieving energy-saving operation. This frequency control scheme, such as controlling the compressor frequency based on room load demand, achieves low-power operation while meeting temperature drop requirements, reducing energy consumption and achieving energy savings for the computer room air conditioner.

[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 amounts decreasing in sequence.

[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 embodiment.

[0047] The following combination Figure 2The flowchart of 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 is further illustrated, which further illustrates the specific process of 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 in step S120, including: steps S210 to S240.

[0048] Step S210, determining the difference between the indoor ambient temperature of the computer room air conditioner and the set temperature of the computer room air conditioner, which is recorded 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 The temperature difference △T=(T 内 -T 设 ).

[0049] Step S220, determining whether the indoor temperature difference of the computer room air conditioner is within the set temperature range within the continuous first set time; wherein the first set time is time t0, and the set temperature range is temperature upper 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 for a continuous first set time, 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 the continuous first set time, 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.

[0052] Figure 8 The figure is a flow chart of a frequency control method based on room load demand in energy-saving operation mode of computer room air conditioner. Figure 8 As shown, a frequency control method based on room load demand in the energy-saving operation mode of the computer room air conditioner includes:

[0053] Step 1: Detect the indoor ambient temperature T for a continuous time of t0 内 With the set temperature T设 The temperature difference △T=(T 内 -T 设 ), and then proceed to step 2. Wherein, it is recommended that 1min≤t0≤10min, preferably t0=5min.

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

[0055] Step 3: When the temperature difference between the ambient temperature and the set temperature is detected for a continuous time t0 (recommended 1≤t0≤10min, preferably t0=5min), △T=(T 内 -T 设 ) satisfies T d ≤△T≤T u When the current value of the device detected is A, the memory ij , determine whether A is satisfied ij =0: If yes, go to step 31; otherwise, go to step 42.

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

[0057] Step 31: If A ij If it is 0, the current A ij Perform memory update and then proceed to step 4.

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

[0059] Hall sensors or mutual inductance coils can be added to the power supply of equipment in the computer room to detect the supply current. Current changes can be used to predict room temperature trends, allowing for proactive adjustment of the air conditioning operating mode. Using the equipment's operating current to predict heat generation and load, the system can adjust the operating frequency in advance, achieving a better match between the air conditioner and the environment and 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 operating power consumption, which in turn is directly proportional to its operating current. Therefore, the room temperature is directly proportional to the operating current of the equipment. While detecting changes in room temperature has a lag, detecting changes in current can be done in real time. If an increase in the current of equipment is detected, it can be predicted that the room temperature will rise after a certain period of time. Conversely, if a decrease in the current is detected, it can be predicted that the room temperature will drop after a certain period of time.

[0061] In the solution of 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. The compressor frequency is then controlled based on the room load demand. While meeting the temperature drop requirements, low-power operation is achieved, the energy consumption of the computer room air conditioner is reduced, and energy-saving effects are achieved.

[0062] In some embodiments, in step S230, 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 specific process of determining whether the predicted load demand of the computer room air conditioner is the second demand or the third demand is described in the following exemplary embodiment.

[0063] The following combination Figure 3 The flowchart of 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 further illustrates 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, including: steps S310 to S340.

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

[0065] Step S320, determining whether the change in the outdoor ambient temperature of the computer room air conditioner exceeds the set temperature accuracy or the change in the working current of the computer room equipment exceeds the set current accuracy; wherein the set temperature accuracy is such as temperature B i , set the current accuracy 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, the predicted load demand of the computer room air conditioner is determined to be the second demand.

[0067] Step S340: 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 predicted load demand of the computer room air conditioner is determined to be the third demand.

[0068] In the solution of the present invention, 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. Then, the compressor frequency is controlled based on the room load demand. While meeting the temperature drop requirement, low-power operation is achieved, the energy consumption of the computer room air conditioner is reduced, and energy-saving effects are achieved.

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

[0070] The following combination Figure 4 The flowchart of an embodiment of the method of the present invention for predicting the load demand of the computer room air conditioner according to the indoor temperature difference of the computer room air conditioner further illustrates the specific process of predicting the load demand of the computer room air conditioner according to the indoor temperature difference of the computer room air conditioner in step S240, including: steps S410 to S430.

[0071] Step S410: 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 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, the predicted load demand of the computer room air conditioner is determined to be 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, the predicted load demand of the computer room air conditioner is determined to be the fourth demand.

[0074] In the solution of the present invention, based on the indoor temperature difference of the computer room air conditioner, the predicted load demand of the computer room air conditioner is determined to be the first demand or the fourth demand, and then the compressor frequency is controlled based on the room load demand. While meeting the temperature drop requirement, low-power operation is achieved, the energy consumption of the computer room air conditioner is reduced, and energy-saving effects are achieved.

[0075] In some embodiments, 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 embodiment.

[0076] The following combination Figure 5 The flowchart of an embodiment of the method of the present invention for pre-adjusting the target frequency of the compressor in the computer room air conditioner further illustrates the specific process of pre-adjusting the target frequency of the compressor in the computer room air conditioner 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 whose load amounts decrease in sequence, determines the load amounts of the load demand of the computer room air conditioner.

[0078] Step S520: If it is determined that the load demand of the computer room air conditioner is the first demand, 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.

[0079] Step S530: If it is determined that the load demand of the computer room air conditioner is the second demand, the target frequency of the compressor is determined according to 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 of the compressor.

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

[0081] Step S550: If it is determined that the load demand of the computer room air conditioner is 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 an energy-saving operation mode of a computer room air conditioner further includes:

[0083] Step 4: Determine whether the outdoor ambient temperature change value exceeds B i When the change in the equipment operating current exceeds B A If yes, execute step 5; otherwise, execute step 8 to end the control of adjusting the compressor frequency and maintain the current operation.

[0084] Step 5: If the outdoor ambient temperature is detected to be greater than B i When the change in the equipment operating current exceeds B A When the compressor target operating frequency F 目标 Adjust to the current working current A of the detected device and the current A closest to the recorded 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 target operating frequency F 目标 =F 当前 +F 升 Then, execute step 8 to end the control of adjusting the compressor frequency and maintain the current operation. Recommended 1≤F 升 ≤4Hz, preferably F 升 =2Hz. If the room temperature is higher than the upper control limit, the frequency needs to be increased to ensure reliability.

[0086] Step 7: If △T<T d When the compressor target operating frequency F 目标 =F 当前 -F 降 Then, execute step 8 to end the control of adjusting the compressor frequency and maintain the current operation. Recommended 1≤F 降 ≤4Hz, preferably F 降 =2Hz. When the room temperature is lower than the lower control limit, the frequency is reduced first to achieve energy saving.

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

[0088] In steps 6 and 7, if the difference between the ambient temperature and the set temperature exceeds the allowable tolerance, frequency control is prioritized to bring the ambient temperature and the set temperature within the allowable tolerance. All control measures are premised on ensuring reliable operation. For example, if the set temperature is 27°C and the control accuracy is 2°C, the first requirement is to ensure that the room temperature is controlled within 27±2°C. If this requirement is exceeded, regulatory intervention is prioritized to return the room temperature to the allowable range before energy-saving regulation is implemented.

[0089] In the solution of the present invention, the above-mentioned logical control is adopted. Although in the early stage of the newly installed and operated air-conditioning unit, due to the small number of memorized Aij values, the initial operation mainly controls the operating frequency of the compressor based on the difference between the ambient temperature and the set temperature, as the operation time increases, the air-conditioning unit continuously updates and records the increase in the amount of data on the frequency output that matches the air-conditioning under different external loops and different equipment load conditions. This allows the air-conditioning unit to make corresponding adjustments in the first place when encountering changes in indoor load or outdoor ambient temperature, avoiding the impact of over-adjustment that leads to energy loss. In addition, the update record mechanism allows the air-conditioning unit to update its operating status even when the output capacity changes under certain conditions (such as dirty filters, dirty two devices, and refrigerant leakage), giving the air-conditioning unit the ability to self-learn and adapt.

[0090] In related solutions, air conditioner compressor frequency control typically determines an initial target frequency based on the detected inner and outer loops and the set temperature, and then adjusts the frequency based on temperature fluctuations. Generally, this results in a relatively delayed frequency adjustment. When the room temperature drops, the air conditioner detects the temperature drop through the return air temperature sensor and then adjusts the frequency, resulting in a relatively delayed adjustment and energy waste. The present invention, however, proposes a frequency control scheme based on room load demand, taking into account the operational characteristics of the computer room air conditioner and the room environment. This achieves low-energy operation while ensuring room temperature control, thus achieving energy-saving results.

[0091] In some embodiments, the working current of the computer room equipment includes: the recorded value of the working current of the computer room equipment, and the detected value of the working current of the computer room equipment. The recorded value of the working current of the computer room equipment is the working current value of the computer room equipment obtained from the historical records in the program, and the detected value of the working current of the computer room equipment is the working current value of the computer room equipment obtained by actual detection.

[0092] For a specific process of determining the target frequency of the compressor according to the outdoor ambient temperature of the computer room air conditioner and the operating current of the computer room equipment in step S530, see the following exemplary description.

[0093] The following combination Figure 6The flowchart of an embodiment of the method of the present invention for determining the target frequency of the compressor according to the outdoor ambient temperature and the operating current of the equipment in the computer room is shown, further illustrating the specific process of determining the target frequency of the compressor according to the outdoor ambient temperature and the operating current of the equipment in the computer room in step S530, including: steps S610 to S640.

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

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

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

[0097] In step S640, based on the correspondence between the set ambient temperature, the set frequency, and the set operating current, a set operating current that is equal to or within a set current error range of the current recorded operating current of the equipment in the computer room, and a set ambient temperature that is equal to or within a set temperature error range of the outdoor ambient temperature of the computer room air conditioner are determined as the target frequency of the compressor. The correspondence between the set ambient temperature, the set frequency, and the set operating current is shown in Table 1.

[0098] In the solution of the present 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 follows:

[0099] When the computer room air conditioner is operating stably (i.e., the compressor frequency remains constant for a certain period of time, the computer room air conditioner set temperature is close to the room temperature, and the room temperature fluctuation is stable within a certain range), the air conditioner's memory function can be used to record the current data of the computer room equipment, the air conditioner operating frequency, and the outdoor ambient temperature. (To simplify the model, it is assumed that the computer room air conditioner's set states, such as temperature and fan speed, will not change after setting, and the room temperature remains within a certain acceptable fluctuation range with the set temperature. Therefore, the air conditioner's set state is not recorded. Of course, if it is assumed that the set state will change, records of room stability and fan speed can also be added. It can be assumed that under the current outer loop and using the current operating frequency, the heat dissipation load of the computer room equipment under this operating current can be balanced with the cooling load output by the air conditioner.

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

[0101] Changes in the device current or outdoor ambient temperature to a certain value can cause room temperature changes. Specifically, room temperature changes depend on the device's heat output and the air conditioner's output capacity. When the device's heat output increases or decreases (as reflected in the device's operating power consumption, which can be indirectly determined by the device's current draw), changes in the outdoor ambient temperature can affect the air conditioner's output capacity. With rising outdoor temperatures, output capacity decreases relatively under the same control parameters. Therefore, changes in any factor (device load, outdoor environment) can cause the room temperature detected by the air conditioner to change. When the change exceeds a certain value (generally with an accuracy of 1°C), the air conditioner's control state is adjusted accordingly to achieve a new balance between air conditioner output and room load.

[0102] Adjust the compressor operating frequency to achieve balance again, specifically: adjust its own operating state (mainly frequency) according to the ambient temperature, so that the air conditioner output capacity and the room load are balanced, so that the room is maintained within a certain temperature range. When the air conditioner output and the room load are balanced, it can be understood that at the current outdoor ambient temperature, the air conditioner uses the current operating frequency, which can keep the room temperature at the set temperature when the equipment is in the working state of operating current A (since the air conditioner in the computer room is generally unattended, the set state will generally not be changed after it is set, so the default set state here is unchanged. Of course, the set state change can also be added to the control, such as Figure 9As shown in Table 1, Table 1 is a parameter table obtained for one of the setting states. Different setting states can add more parameter tables, and the principle is the same). Therefore, this group of states can be recorded and updated to the corresponding table (the horizontal axis is the outer ring, and the vertical axis is the frequency). After the air conditioner has been running for a long time, different combination data can be obtained in theory. Similarly, under different outer rings, the air conditioner can be operated at which frequency under different operating currents of the equipment in the computer room, so that the air conditioner output can stabilize the room temperature. Of course, in the process, due to the precision temperature, it may cause a certain combination (frequency, outer ring) to have a record (that is, this state has been stabilized before), and the current value may be different. Updating the average of the current value and the recorded value here as the recorded value allows the air conditioner to continuously update and adapt according to the latest status during actual operation.

[0103] Figure 9 Table 1 is the matrix data table of the equipment working current. For example, if the accuracy of the outer ring temperature is 1°C and the accuracy of the compressor frequency is 2Hz, the outer ring temperature is 33°C and the compressor frequency is 30Hz, the recorded data of the equipment working current is A 3330 After multiple operation records, a matrix data table can be obtained with the horizontal axis being the outdoor ambient temperature, the vertical axis being the compressor operating frequency, and the value being the equipment operating current (e.g. Figure 9 shown in Table 1).

[0104] Under current operating conditions (outdoor ambient temperature, compressor operating frequency), if the device's operating current is detected to have dropped to half the sum of the current in the current range and the current at the next lower frequency, the frequency can be reduced. If the device's operating current is detected to have increased beyond the current at the next higher frequency, the frequency can be increased to the next higher frequency. For example, in the current state, the outer ring temperature is 35°C, the operating frequency is 60Hz, and the device current is 100A. After a while, the device's operating current drops to 90A. If the air conditioner remains unchanged, the room temperature will soon drop. Due to the lag in temperature changes, it may take 10 minutes for the room temperature detected by the air conditioner to change. If the control state is changed at this time, the control lag will occur and energy savings will not be achieved. If the table shows that a compressor operating frequency of 56Hz can meet the load when the device current is 90A, the air conditioner can be controlled to operate at 56Hz in advance to achieve timely control and energy savings. This may cause a slight, temporary increase in room temperature, but the impact on the safe operation of the computer room is minimal and can be ignored.

[0105] In the solution of 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 under the operating current and the cooling load output by the air conditioner can be balanced. Thus, the compressor frequency is controlled based on the room load demand, and low-power operation is achieved while meeting the temperature drop requirements, thereby reducing the energy consumption of the computer room air conditioner and achieving energy-saving effects.

[0106] In some embodiments, the control method for a computer room air conditioner according to the solutions of 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 after a third set time has passed. The third set time may be time t1.

[0107] See also Figure 8 In the example shown, in steps 1 through 8, after adjusting the compressor's target operating frequency, i.e., when the compressor's operating frequency changes, it is recommended to maintain the t1 period before adjusting the frequency again to avoid frequent adjustments and over-adjustment due to temperature detection lag. A recommended range is 1 min ≤ t1 ≤ 10 min, with t1 = 3 min being preferred.

[0108] By adopting the technical solution of this embodiment, the indoor ambient temperature and the set temperature of the computer room air conditioner are detected in the energy-saving operation mode of the computer room air conditioner, the working current of the computer room equipment is detected, and the outdoor ambient temperature of the computer room air conditioner is detected; when the difference between the indoor ambient temperature and the set temperature is within the set temperature range, the recorded value of the working current of the computer room equipment is determined, and the target frequency of the compressor is controlled according to the change of the outdoor ambient temperature or the change of the working current of the computer room equipment in combination with the recorded value of the working current of the computer room equipment; 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 according to the difference between the indoor ambient temperature and the set temperature; thereby, 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 to achieve energy saving effect while ensuring the temperature control of the computer room air conditioner.

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

[0110] The acquisition unit 102 is configured to, when the computer room air conditioner is operating and in energy-saving operation mode, acquire 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 in the environment where the computer room air conditioner is located; wherein the indoor ambient temperature of the computer room air conditioner, the set temperature of the computer room air conditioner, and the 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 routes: one is for daily electricity consumption such as lighting and monitoring; one is for power supply dedicated to air conditioning; and one is for power supply dedicated to 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 current of the detection equipment, and can be detected by installing a sensor or reading data by communicating with the power distribution cabinet. The specific functions and processing of the acquisition unit 102 are shown in 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 equipment in the computer room. 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 the 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 also shown in step S130.

[0113] The present invention proposes a frequency control scheme based on room load demand for energy-saving operation of computer room air conditioners. This scheme predicts air conditioning adjustment parameters based on current load, preemptively controlling the air conditioner to enter a high-efficiency operating state and achieving energy-saving operation. This frequency control scheme, such as controlling the compressor frequency based on room load demand, achieves low-power operation while meeting temperature drop requirements, reducing energy consumption and achieving energy savings for the computer room air conditioner.

[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 amounts decreasing in sequence.

[0115] The control unit 104 predicts the load demand of the computer room air conditioner according to 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, which is recorded 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 The temperature difference △T=(T 内 -T 设 ). The specific functions and processing of the control unit 104 are also shown in 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 within a continuous first set time; wherein the first set time is such as time t0, and the set temperature range is such as the temperature upper 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. The specific functions and processing of the control unit 104 are also shown in 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 whether the predicted load demand of the computer room air conditioner is the second demand or the third demand. The specific functions and processing of the 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 is not within the set temperature range for the first consecutive set time period, determine, based on the indoor temperature difference of the computer room air conditioner, whether the predicted load demand of the computer room air conditioner is the first demand or the fourth demand. The specific functions and processing of the control unit 104 are further described in step S240.

[0120] Figure 8 The figure is a flow chart of a frequency control method based on room load demand in energy-saving operation mode of computer room air conditioner. Figure 8 As shown, a frequency control method based on room load demand in the energy-saving operation mode of the computer room air conditioner includes:

[0121] Step 1: Detect the indoor ambient temperature T for a continuous time of t0 内 With the set temperature T 设 The temperature difference △T=(T 内 -T 设), and then proceed to step 2. Wherein, it is recommended that 1min≤t0≤10min, preferably t0=5min.

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

[0123] Step 3: When the temperature difference between the ambient temperature and the set temperature is detected for a continuous time t0 (recommended 1≤t0≤10min, preferably t0=5min), △T=(T 内 -T 设 ) satisfies T d ≤△T≤T u When the current value of the device detected is A, the memory ij , determine whether A is satisfied ij =0: If yes, go to step 31; otherwise, go to step 42.

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

[0125] Step 31: If A ij If it is 0, the current A ij Perform memory update and then proceed to step 4.

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

[0127] Hall sensors or mutual inductance coils can be added to the power supply of equipment in the computer room to detect the supply current. Current changes can be used to predict room temperature trends, allowing for proactive adjustment of the air conditioning operating mode. Using the equipment's operating current to predict heat generation and load, the system can adjust the operating frequency in advance, achieving a better match between the air conditioner and the environment and 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 operating power consumption, which in turn is directly proportional to its operating current. Therefore, the room temperature is directly proportional to the operating current of the equipment. While detecting changes in room temperature has a lag, detecting changes in current can be done in real time. If an increase in the current of equipment is detected, it can be predicted that the room temperature will rise after a certain period of time. Conversely, if a decrease in the current is detected, it can be predicted that the room temperature will drop after a certain period of time.

[0129] In the solution of 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. The compressor frequency is then controlled based on the room load demand. While meeting the temperature drop requirements, low-power operation is achieved, the energy consumption of the computer room air conditioner is reduced, and energy-saving effects are 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 of the computer room air conditioner and the operating current of the computer room equipment, and determines whether the predicted load demand of the computer room air conditioner is the second demand or the third demand, including:

[0131] The control unit 104 is further configured to 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 within the second set time. The specific functions and processing of the control unit 104 are also 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 the set temperature accuracy or the change in the working current of the computer room equipment exceeds the set current accuracy; wherein the set temperature accuracy is such as temperature B i , set the current accuracy as current B A The specific functions and processing of the control unit 104 are also described in step S320.

[0133] The control unit 104 is further configured to determine that the predicted load demand of the computer room air conditioner is 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 the control unit 104 are further described in step S330.

[0134] The control unit 104 is further configured to determine that the predicted load demand of the computer room air conditioner is a third 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 the control unit 104 are further described in step S340.

[0135] In the solution of the present invention, 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. Then, the compressor frequency is controlled based on the room load demand. While meeting the temperature drop requirement, low-power operation is achieved, the energy consumption of the computer room air conditioner is reduced, and energy-saving effects are achieved.

[0136] In some embodiments, the control unit determines, based on the indoor temperature difference of the computer room air conditioner, whether the predicted load demand of the computer room air conditioner is the first demand or the fourth demand, 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 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 also described in step S410.

[0138] The control unit 104 is further configured to determine that the predicted load demand of the computer room air conditioner is 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 also shown in step S420.

[0139] The control unit 104 is further configured to determine that the predicted load demand of the computer room air conditioner is 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 the control unit 104 are also shown in step S430.

[0140] In the solution of the present invention, based on the indoor temperature difference of the computer room air conditioner, the predicted load demand of the computer room air conditioner is determined to be the first demand or the fourth demand, and then the compressor frequency is controlled based on the room load demand. While meeting the temperature drop requirement, low-power operation is achieved, the energy consumption of the computer room air conditioner is reduced, and energy-saving effects are achieved.

[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 magnitude of the load demand of the computer room air conditioner when the load demand of the computer room air conditioner includes a first demand, a second demand, a third demand, and a fourth demand, the load magnitudes of which decrease in sequence. 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 frequency increase value, and control the compressor to operate at the target frequency. The specific functions and processing of the 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 a target frequency for 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 the 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 the 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, to control the compressor to maintain the current frequency. The specific functions and processing of the 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 the 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 an energy-saving operation mode of a computer room air conditioner further includes:

[0148] Step 4: Determine whether the outdoor ambient temperature change value exceeds B i When the change in the equipment operating current exceeds B A If yes, execute step 5; otherwise, execute step 8 to end the control of adjusting the compressor frequency and maintain the current operation.

[0149] Step 5: If the outdoor ambient temperature is detected to be greater than B i When the change in the equipment operating current exceeds BA When the compressor target operating frequency F 目标 Adjust to the current working current A of the detected device and the current A closest to the recorded 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 target operating frequency F 目标 =F 当前 +F 升 Then, execute step 8 to end the control of adjusting the compressor frequency and maintain the current operation. Recommended 1≤F 升 ≤4Hz, preferably F 升 =2Hz. If the room temperature is higher than the upper control limit, the frequency needs to be increased to ensure reliability.

[0151] Step 7: If △T<T d When the compressor target operating frequency F 目标 =F 当前 -F 降 Then, execute step 8 to end the control of adjusting the compressor frequency and maintain the current operation. Recommended 1≤F 降 ≤4Hz, preferably F 降 =2Hz. When the room temperature is lower than the lower control limit, the frequency is reduced first to achieve energy saving.

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

[0153] In steps 6 and 7, if the difference between the ambient temperature and the set temperature exceeds the allowable tolerance, frequency control is prioritized to bring the ambient temperature and the set temperature within the allowable tolerance. All control measures are premised on ensuring reliable operation. For example, if the set temperature is 27°C and the control accuracy is 2°C, the first requirement is to ensure that the room temperature is controlled within 27±2°C. If this requirement is exceeded, regulatory intervention is prioritized to return the room temperature to the allowable range before energy-saving regulation is implemented.

[0154] In the solution of the present invention, the above-mentioned logical control is adopted. Although in the early stage of the newly installed and operated air-conditioning unit, due to the small number of memorized Aij values, the initial operation mainly controls the operating frequency of the compressor based on the difference between the ambient temperature and the set temperature, as the operation time increases, the air-conditioning unit continuously updates and records the increase in the amount of data on the frequency output that matches the air-conditioning under different external loops and different equipment load conditions. This allows the air-conditioning unit to make corresponding adjustments in the first place when encountering changes in indoor load or outdoor ambient temperature, avoiding the impact of over-adjustment that leads to energy loss. In addition, the update record mechanism allows the air-conditioning unit to update its operating status even when the output capacity changes under certain conditions (such as dirty filters, dirty two devices, and refrigerant leakage), giving the air-conditioning unit the ability to self-learn and adapt.

[0155] In related solutions, air conditioner compressor frequency control typically determines an initial target frequency based on the detected inner and outer loops and the set temperature, and then adjusts the frequency based on temperature fluctuations. Generally, this results in a relatively delayed frequency adjustment. When the room temperature drops, the air conditioner detects the temperature drop through the return air temperature sensor and then adjusts the frequency, resulting in a relatively delayed adjustment and energy waste. The present invention, however, proposes a frequency control scheme based on room load demand, taking into account the operational characteristics of the computer room air conditioner and the room environment. This achieves low-energy operation while ensuring room temperature control, thus achieving energy-saving results.

[0156] In some embodiments, the working current of the computer room equipment includes: the recorded value of the working current of the computer room equipment, and the detected value of the working current of the computer room equipment. The recorded value of the working current of the computer room equipment is the working current value of the computer room equipment obtained from the historical records in the program, and the detected value of the working current of the computer room equipment is the working current value of the computer room equipment obtained by actual detection.

[0157] The control unit 104 determines the target frequency of the compressor according to 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 historical recorded value of the operating current of the equipment in the computer room is 0. The specific functions and processing of the control unit 104 are also shown in step S610.

[0159] The control unit 104 is further configured to, if it is determined that the historical recorded value of the operating current of the equipment in the computer room is 0, set the current recorded value of the operating current of the equipment in the computer room to be equal to the current detected value of the operating current of the equipment in the computer room. The specific functions and processing of the 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 equipment in the computer room is not zero, set the current recorded value of the operating current of the equipment in the computer room to be equal to half the sum of the historical recorded value of the operating current of the equipment in the computer room and the current detected value of the operating current of the equipment in the computer room. The specific functions and processing of the control unit 104 are further described in step S630.

[0161] The control unit 104 is further configured to determine, based on the correspondence between the set ambient temperature, the set frequency, and the set operating current, a set operating current that is equal to or within a set current error range of the current recorded operating current of the equipment in the computer room, and a set frequency that is equal to or within a set temperature error range of the outdoor ambient temperature of the computer room air conditioner, as the target frequency of the compressor. The correspondence between the set ambient temperature, the set frequency, and the 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 the present 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 follows:

[0163] When the computer room air conditioner is operating stably (i.e., the compressor frequency remains constant for a certain period of time, the computer room air conditioner set temperature is close to the room temperature, and the room temperature fluctuation is stable within a certain range), the air conditioner's memory function can be used to record the current data of the computer room equipment, the air conditioner operating frequency, and the outdoor ambient temperature. (To simplify the model, it is assumed that the computer room air conditioner's set states, such as temperature and fan speed, will not change after setting, and the room temperature remains within a certain acceptable fluctuation range with the set temperature. Therefore, the air conditioner's set state is not recorded. Of course, if it is assumed that the set state will change, records of room stability and fan speed can also be added. It can be assumed that under the current outer loop and using the current operating frequency, the heat dissipation load of the computer room equipment under this operating current can be balanced with the cooling load output by the air conditioner.

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

[0165] Changes in the device current or outdoor ambient temperature to a certain value can cause room temperature changes. Specifically, room temperature changes depend on the device's heat output and the air conditioner's output capacity. When the device's heat output increases or decreases (as reflected in the device's operating power consumption, which can be indirectly determined by the device's current draw), changes in the outdoor ambient temperature can affect the air conditioner's output capacity. With rising outdoor temperatures, output capacity decreases relatively under the same control parameters. Therefore, changes in any factor (device load, outdoor environment) can cause the room temperature detected by the air conditioner to change. When the change exceeds a certain value (generally with an accuracy of 1°C), the air conditioner's control state is adjusted accordingly to achieve a new balance between air conditioner output and room load.

[0166] Adjust the compressor operating frequency to achieve balance again, specifically: adjust its own operating state (mainly frequency) according to the ambient temperature, so that the air conditioner output capacity and the room load are balanced, so that the room is maintained within a certain temperature range. When the air conditioner output and the room load are balanced, it can be understood that at the current outdoor ambient temperature, the air conditioner uses the current operating frequency, which can keep the room temperature at the set temperature when the equipment is in the working state of operating current A (since the air conditioner in the computer room is generally unattended, the set state will generally not be changed after it is set, so the default set state here is unchanged. Of course, the set state change can also be added to the control, such as Figure 9 As shown in Table 1, Table 1 is a parameter table obtained for one of the setting states. Different setting states can add more parameter tables, and the principle is the same). Therefore, this group of states can be recorded and updated to the corresponding table (the horizontal axis is the outer ring, and the vertical axis is the frequency). After the air conditioner has been running for a long time, different combination data can be obtained in theory. Similarly, under different outer rings, the air conditioner can be operated at which frequency under different operating currents of the equipment in the computer room, so that the air conditioner output can stabilize the room temperature. Of course, in the process, due to the precision temperature, it may cause a certain combination (frequency, outer ring) to have a record (that is, this state has been stabilized before), and the current value may be different. Updating the average of the current value and the recorded value here as the recorded value allows the air conditioner to continuously update and adapt according to the latest status during actual operation.

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

[0168] Under current operating conditions (outdoor ambient temperature, compressor operating frequency), if the device's operating current is detected to have dropped to half the sum of the current in the current range and the current at the next lower frequency, the frequency can be reduced. If the device's operating current is detected to have increased beyond the current at the next higher frequency, the frequency can be increased to the next higher frequency. For example, in the current state, the outer ring temperature is 35°C, the operating frequency is 60Hz, and the device current is 100A. After a while, the device's operating current drops to 90A. If the air conditioner remains unchanged, the room temperature will soon drop. Due to the lag in temperature changes, it may take 10 minutes for the room temperature detected by the air conditioner to change. If the control state is changed at this time, the control lag will occur and energy savings will not be achieved. If the table shows that a compressor operating frequency of 56Hz can meet the load when the device current is 90A, the air conditioner can be controlled to operate at 56Hz in advance to achieve timely control and energy savings. This may cause a slight, temporary increase in room temperature, but the impact on the safe operation of the computer room is minimal and can be ignored.

[0169] In the solution of 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 under the operating current and the cooling load output by the air conditioner can be balanced. Thus, the compressor frequency is controlled based on the room load demand, and low-power operation is achieved while meeting the temperature drop requirements, thereby reducing the energy consumption of the computer room air conditioner and achieving energy-saving effects.

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

[0171] See also Figure 8 In the example shown, in steps 1 through 8, after adjusting the compressor's target operating frequency, i.e., when the compressor's operating frequency changes, it is recommended to maintain the t1 period before adjusting the frequency again to avoid frequent adjustments and over-adjustment due to temperature detection lag. A recommended range is 1 min ≤ t1 ≤ 10 min, with t1 = 3 min being preferred.

[0172] Since the processing and functions implemented by the device of this embodiment basically correspond to the embodiments, principles and examples of the aforementioned method, for any details not fully described in this embodiment, please refer to the relevant descriptions in the aforementioned embodiments and will not be repeated here.

[0173] According to an embodiment of the present invention, a computer room air conditioner corresponding to the control device of the computer room air conditioner is also provided. The computer room air conditioner may include: the control device of the computer room air conditioner described above.

[0174] Since the processing and functions implemented by the computer room air conditioner of this embodiment basically correspond to the embodiments, principles and examples of the aforementioned devices, for any details not fully described in this embodiment, please refer to 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 of a computer room air conditioner is also provided, including a computer program. When the computer program is executed by a processor, the steps of the control method of the computer room air conditioner described above are implemented.

[0176] Since the processing and functions implemented by the product of this embodiment basically correspond to the embodiments, principles and examples of the aforementioned method, for any details not fully described in this embodiment, please refer to 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 the control method of the computer room air conditioner is also provided, wherein the storage medium includes a stored program, wherein when the program is running, the device where the storage medium is located is controlled to execute the steps of the control method of the computer room air conditioner described above.

[0178] Since the processing and functions implemented by the storage medium of this embodiment basically correspond to the embodiments, principles and examples of the aforementioned method, for any details not fully described in this embodiment, please refer to the relevant descriptions in the aforementioned embodiments and will not be repeated here.

[0179] In summary, it is easy for those skilled in the art to understand that, under the premise of no conflict, the above-mentioned advantageous methods can be freely combined and superimposed.

[0180] The foregoing description is merely an embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of the claims.

Claims

1. A control method for a computer room air conditioner, characterized in that: include: When the computer room air conditioner is running, obtaining the indoor ambient temperature of the computer room air conditioner and the set temperature of the computer room air conditioner, obtaining the outdoor ambient temperature of the computer room air conditioner, and obtaining the operating current of the computer room equipment in the environment where the computer room air conditioner is located; Predicting 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; According to the load demand of the computer room air conditioner, the target frequency of the compressor in the computer room air conditioner is adjusted in advance.

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 conditioner include: a first requirement, a second requirement, a third requirement, and a fourth requirement, with the load amount decreasing in sequence; Predicting the load demand of the computer room air conditioner according to 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 includes: 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; Determining whether the indoor temperature difference of the computer room air conditioner is within a set temperature range for a continuous first set time; 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, 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, and determining that the predicted load demand of the computer room air conditioner is 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 within the continuous first set time, 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.

3. The control method of the computer room air conditioner according to claim 2, characterized in that: Predicting a load demand of the computer room air conditioner according to an outdoor ambient temperature of the computer room air conditioner and an operating current of the computer room equipment, and determining whether the predicted load demand of the computer room air conditioner is a second demand or a third demand, including: Determining a change in the outdoor ambient temperature of the computer room air conditioner and a change in the operating current of the computer room equipment within a second set time; Determine whether the change in the outdoor ambient temperature of the computer room air conditioner exceeds a set temperature precision or the change in the operating current of the computer room equipment exceeds a set current precision; 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 determining the predicted load demand of the computer room air conditioner to be the second 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 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: Determining, based on the indoor temperature difference of the computer room air conditioner, whether the predicted load demand of the computer room air conditioner is the first demand or the fourth demand includes: Determining whether the indoor temperature difference of the computer room air conditioner is greater than the upper limit of the set temperature range, or determining 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, determining 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 less than the lower limit of the set temperature range, 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: 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 magnitudes of the load demands of the computer room air conditioner when the load demand of the computer room air conditioner includes a first demand, a second demand, a third demand, and a fourth demand, the load magnitudes of which decrease in sequence; If it is determined that the load demand of the computer room air conditioner is the first demand, determining the target frequency of the compressor as the sum of the current frequency of the compressor and the set frequency increase value, and controlling the compressor to operate at the target frequency of the compressor; If it is determined that the load demand of the computer room air conditioner is the second demand, determining the target frequency of the compressor according to the outdoor ambient temperature of the computer room air conditioner and the operating current of the computer room equipment; and controlling the compressor to operate at the target frequency of the compressor; If it is determined that the load demand of the computer room air conditioner is the third demand, determining the current frequency of the compressor as the target frequency of the compressor, and controlling the compressor to operate according to the target frequency of the compressor; If it is determined that the load demand of the computer room air conditioner is 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.

6. The control method for a computer room air conditioner according to claim 5, characterized in that: The working current of the equipment in the computer room includes: a recorded value of the working current of the equipment in the computer room, and a detected value of the working current of the equipment in the computer room; Determining a target frequency of the compressor according to an outdoor ambient temperature of the computer room air conditioner and an operating current of the computer room equipment includes: Determine whether a historical recorded value of the operating current of the equipment in the computer room is 0; If it is determined that the historical recorded value of the working current of the equipment in the computer room is 0, then the current recorded value of the working current of the equipment in the computer room is equal to the current detected value of the working current of the equipment in the computer room; If it is determined that the historical recorded value of the working current of the computer room equipment is not 0, then setting the current recorded value of the working current of the computer room equipment to be equal to half of the sum of the historical recorded value of the working current of the computer room equipment and the current detected value of the working current of the computer room equipment; According to the correspondence between the set ambient temperature, the set frequency, and the set working current, the set working current in the correspondence that is the same as the recorded value of the current working current of the computer room equipment or the error is within the set current error range, and the set frequency corresponding to the set ambient temperature that is the same as the outdoor ambient temperature of the computer room air conditioner or the error is within the set temperature error range, 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 5, characterized in that: Also includes: After the target frequency of the compressor in the computer room air conditioner is adjusted, the target frequency of the compressor in the computer room air conditioner is allowed to be adjusted again only after a third set time.

8. A control device for a computer room air conditioner, characterized in that: include: an acquiring unit configured to acquire, when the computer room air conditioner is in operation, an indoor ambient temperature of the computer room air conditioner, a set temperature of the computer room air conditioner, an outdoor ambient temperature of the computer room air conditioner, and an operating current of a computer room device in an environment where the computer room air conditioner is located; a control unit configured to predict a load demand of the computer room air conditioner based on an indoor ambient temperature of the computer room air conditioner, a set temperature of the computer room air conditioner, an outdoor ambient temperature of the computer room air conditioner, and an operating current of the computer room equipment; The control unit 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.

9. A computer room air conditioner, characterized in that: include: The control device for the computer room air conditioner according to claim 8.

10. A storage medium, characterized in that: The storage medium includes a stored program, wherein when the program is executed, the device where the storage medium is located is controlled to execute the control method for the computer room air conditioner according to any one of claims 1 to 7.

11. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method for controlling the computer room air conditioner according to any one of claims 1 to 7 are implemented.

Images