Control method, device and equipment of double-fluorine-pump refrigerating system and medium

Abstract

The invention discloses a control method, device and equipment of a double-fluorine-pump refrigerating system and a medium. The double-fluorine-pump refrigerating system comprises a first compressor, a first fluorine pump, a second compressor and a second fluorine pump, and the method comprises the steps that the return air temperature and the target set temperature are obtained, and the first compressor, the first fluorine pump, the second compressor and the second fluorine pump are controlled to operate according to the return air temperature, the target set temperature and a preset return air temperature threshold value; and the return air temperature is monitored, and when the return air temperature approaches the target set temperature, the first compressor is controlled to be closed and the operation frequency of the first fluorine pump is increased, or the second compressor is controlled to be closed and the operation frequency of the second fluorine pump is increased. The running frequency of the fluorine pump is increased while the compressor is closed, the refrigerating effect can be improved by increasing the running frequency of the fluorine pump, the situation that the compressor is started again due to the fact that the environment temperature fluctuation is large when one compressor is closed is prevented, frequent starting and stopping of the compressor are avoided, and the service life of the compressor is prolonged.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of air conditioners, and in particular to a control method, device, equipment and medium for a double fluorine pump refrigeration system. Background Art

[0002] In the field of refrigeration technology, the fluorine pump refrigeration system has been widely used as an efficient and energy-saving refrigeration solution. At present, the system mainly has three operating modes: compressor operation mode, compressor and fluorine pump mixed operation mode, and fluorine pump operation mode. The switching mechanism of these three modes mainly depends on the judgment of ambient temperature or indoor and outdoor temperature difference to achieve a balance between refrigeration effect and energy consumption. In particular, when the environmental conditions are suitable for the dual-system unit to enter the mixed refrigeration mode, the variable frequency fluorine pump can dynamically adjust its operating frequency according to the changes in ambient temperature, thereby optimizing the refrigeration efficiency. However, in the prior art, if the working status of the fixed-frequency compressor and the variable frequency fluorine pump is not effectively scheduled, the fixed-frequency compressor in the dual system will be frequently started and stopped, which will not only seriously shorten the service life of the compressor, but also cause large fluctuations in ambient temperature, affecting the stability and reliability of the refrigeration system. Summary of the invention

[0003] The present invention provides a control method, device, equipment and medium for a dual fluorine pump refrigeration system, aiming to solve the problem of frequent start and stop of a fixed-frequency compressor in an existing fluorine pump refrigeration system.

[0004] In a first aspect, an embodiment of the present invention provides a control method for a dual fluorine pump refrigeration system, wherein the dual fluorine pump refrigeration system comprises: a first compressor, a first fluorine pump, a second compressor and a second fluorine pump, and the method comprises:

[0005] Acquire the return air temperature and the target setting temperature, and control the operation of the first compressor, the first fluorine pump, the second compressor and the second fluorine pump according to the return air temperature, the target setting temperature and the preset return air temperature threshold;

[0006] Monitor the return air temperature and when the return air temperature approaches the target set temperature, control the first compressor to shut down and increase the operating frequency of the first fluorine pump, or control the second compressor to shut down and increase the operating frequency of the second fluorine pump.

[0007] In a second aspect, the present invention further provides a control device for a dual fluorine pump refrigeration system, comprising a unit for executing the method of the first aspect.

[0008] In a third aspect, an embodiment of the present invention further provides a computer device, comprising a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the method of the first aspect when executing the computer program.

[0009] In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium, wherein the storage medium stores a computer program, and the computer program, when executed by a processor, can implement the method of the first aspect.

[0010] The present invention provides a control method, device, equipment and medium for a dual fluorine pump refrigeration system. The dual fluorine pump refrigeration system includes: a first compressor, a first fluorine pump, a second compressor and a second fluorine pump. The method includes: obtaining a return air temperature and a target set temperature, and controlling the operation of the first compressor, the first fluorine pump, the second compressor and the second fluorine pump according to the return air temperature, the target set temperature and a preset return air temperature threshold; monitoring the return air temperature and when the return air temperature approaches the target set temperature, controlling the first compressor to shut down and increasing the operating frequency of the first fluorine pump, or controlling the second compressor to shut down and increasing the operating frequency of the second fluorine pump. The present application timely shuts down the first compressor or the second compressor after entering the mixed operation mode, and increases the operating frequency of the first fluorine pump while shutting down the first compressor, or increases the operating frequency of the second fluorine pump while shutting down the second compressor. Increasing the operating frequency of the fluorine pump can improve the refrigeration effect, prevent the compressor from restarting due to large fluctuations in ambient temperature caused by shutting down one compressor, avoid frequent start and stop of the compressor, extend the service life of the compressor, and improve reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0012] Figure 1 A schematic flow chart of the steps of a control method for a dual fluorine pump refrigeration system according to an embodiment of the present invention;

[0013] Figure 2 It is a schematic diagram of sub-steps of a control method of a dual fluorine pump refrigeration system according to an embodiment of the present invention;

[0014] Figure 3 A schematic diagram of another sub-step of the control method of the dual fluorine pump refrigeration system according to an embodiment of the present invention;

[0015] Figure 4 A schematic diagram of sub-steps of a control method for a dual fluorine pump refrigeration system according to another embodiment of the present invention;

[0016] Figure 5A schematic diagram of another sub-step of a control method for a dual fluorine pump refrigeration system according to another embodiment of the present invention;

[0017] Figure 6 A schematic diagram of sub-steps of a control method for a dual fluorine pump refrigeration system according to another embodiment of the present invention;

[0018] Figure 7 A schematic diagram of another sub-step of a control method for a dual fluorine pump refrigeration system according to another embodiment of the present invention;

[0019] Figure 8 This is a control logic diagram of a dual fluorine pump refrigeration system according to an embodiment of the present invention;

[0020] Fig. 9 A schematic block diagram of a control device for a double fluorine pump refrigeration system provided in an embodiment of the present invention;

[0021] Fig.10 A schematic block diagram of a computer device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0024] It should also be understood that the terms used in this specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the specification of the present invention and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0025] It should be further understood that the term "and / or" used in the present description and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0026] As used in this specification and the appended claims, the term "if" may be interpreted as "when" or "upon" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrases "if it is determined" or "if [described condition or event] is detected" may be interpreted as meaning "upon determination" or "in response to determining" or "upon detection of [described condition or event]" or "in response to detecting [described condition or event]," depending on the context.

[0027] The embodiment of the present invention provides a control method for a dual fluorine pump refrigeration system, which is a dual-system refrigeration unit, including a first fluorine pump refrigeration system and a second fluorine pump refrigeration system. The two fluorine pump refrigeration systems have the same structure and share a set of controllers. Each fluorine pump refrigeration system includes: a compressor, a condenser, a liquid storage tank, a fluorine pump, an expansion valve and an evaporator. The compressor, the condenser, the liquid storage tank, the fluorine pump, the expansion valve and the evaporator are connected in sequence to form a refrigeration cycle. The compressor and the fluorine pump are respectively connected in parallel with branches, and a check valve A and a check valve B are respectively arranged on the two branches. The check valve A is connected in parallel with the compressor, and the check valve B is connected in parallel with the fluorine pump. For the convenience of description, the compressor and the fluorine pump in the first fluorine pump refrigeration system are referred to as the first compressor and the first fluorine pump, and the compressor and the fluorine pump in the second fluorine pump refrigeration system are referred to as the second compressor and the second fluorine pump. The dual fluorine pump refrigeration system of this embodiment is mainly used in an environment that requires a large amount of refrigeration, such as a computer room air conditioner. Of course, it can be understood that it can also be other application environments.

[0028] See also Figure 1 , Figure 1 The flowchart of the control method of the double fluorine pump refrigeration system provided by the embodiment of the present invention is as follows. The control method of the double fluorine pump refrigeration system is described in detail. Fig.10 As shown, the method includes the following steps: S110-S120.

[0029] S110, obtaining a return air temperature and a target setting temperature, and controlling the operation of the first compressor, the first fluorine pump, the second compressor, and the second fluorine pump according to the return air temperature, the target setting temperature, and a preset return air temperature threshold;

[0030] In this embodiment, the return air temperature refers to the temperature value detected by the return air of the indoor unit, and the return air temperature can also be identified as the room temperature, which is detected by the temperature sensor. The target setting temperature refers to the temperature set by the user, for example, the standard room temperature of 22 degrees Celsius set in the controller, and the target setting temperature can be changed according to the needs of the room. The preset return air temperature threshold refers to the alarm value of the room temperature, for example, 28 degrees Celsius. When the temperature is reached, the machine in the room will have a heat dissipation problem, the heat dissipation effect is poor and the temperature is too high, resulting in unstable operation of the machine, so it is necessary to preset the return air temperature threshold to prevent the temperature in the room from being too high. The first compressor and the first fluorine pump are the compressors and fluorine pumps in the first fluorine pump refrigeration system, and the second compressor and the second fluorine pump are the compressors and fluorine pumps in the second fluorine pump refrigeration system. In order to ensure a suitable room temperature, it is necessary to reasonably control the first compressor, the first fluorine pump, the second compressor and the second fluorine pump to operate through the three parameters of return air temperature, target setting temperature and return air temperature threshold, accurately control the room temperature, and ensure the reliability of the operation of the machine in the room. Specifically, different action controls can be made by comparing the return air temperature with the target setting temperature and the preset return air temperature threshold separately, or by comparing the return air temperature with the target setting temperature and the preset return air temperature threshold together. Of course, it is understandable that other judgment methods can also be used. Generally speaking, depending on the return air temperature, the dual fluorine pump refrigeration system will perform different actions to adjust the refrigeration effect so that the return air temperature is maintained at an appropriate temperature. Among them, in principle, the higher the return air temperature, the higher the temperature in the machine room and the greater the refrigeration demand, then the first compressor, the first fluorine pump, the second compressor and the second fluorine pump will all be turned on to release a large amount of cold to meet the refrigeration demand. If the return air temperature is close to the target setting temperature, it means that the temperature in the machine room is suitable and the refrigeration demand is small, then there is no need to turn on all the refrigeration components. Only one or more of them need to be turned on to meet the corresponding refrigeration capacity, and the remaining refrigeration components can be turned off to save energy. Therefore, based on the definition of the return air temperature based on the target set temperature and the preset return air temperature threshold, the cooling capacity currently required by the computer room can be determined, and then the corresponding number of refrigeration components can be turned on according to the current required cooling capacity to match the current cooling demand, thereby accurately controlling the temperature of the computer room and improving the safety and reliability of the computer room operation.

[0031] S120, monitoring the return air temperature and when the return air temperature approaches the target set temperature, controlling the first compressor to shut down and increasing the operating frequency of the first fluorine pump, or controlling the second compressor to shut down and increasing the operating frequency of the second fluorine pump.

[0032] In this embodiment, after controlling the operation of the above-mentioned refrigeration components, the return air temperature is continuously monitored. After a period of operation, the return air temperature will gradually decrease until it drops to the vicinity of the target set temperature, indicating that the temperature of the machine room has dropped at this time, and the cooling capacity generated by the unit is greater than the heat generated in the machine room. When the return air temperature approaches the target set temperature, one of the compressors can be turned off, that is, the first compressor or the second compressor is turned off. The first compressor and the second compressor of this embodiment are fixed-frequency compressors, and the fixed-frequency compressor usually shuts down after reaching the set temperature. In this embodiment, when the return air temperature approaches the target set temperature, it means that the temperature of the machine room is suitable, one of the compressors is turned off, and the other compressor does not stop and keeps running, and the operating frequency of the fluorine pump is increased while the compressor is turned off. In the fluorine pump refrigeration system, the fluorine pump can assist or replace the functions of some compressors, especially under certain working conditions, such as when the outdoor temperature is low (light load refrigeration scenarios at night or in winter), using a fluorine pump to drive the refrigerant circulation can reduce the workload of the compressor, thereby saving energy consumption. In short, the fluorine pump can also be used for refrigeration, but its refrigeration effect is not as good as that of the compressor. Then, by increasing the operating frequency of the fluorine pump, the refrigeration effect can be improved. Turning off the compressor may cause large temperature fluctuations (temperature increase). Then, by increasing the operating frequency of the fluorine pump, the refrigeration effect is improved, the loss of cold caused by turning off the compressor is offset, and the temperature fluctuation is reduced, thereby avoiding the situation where the compressor is restarted due to temperature rise, and reducing the number of compressor starts and stops. It should be noted that in this embodiment, the first compressor can be turned off and the operating frequency of the first fluorine pump can be increased at the same time, and the operating frequency of the second fluorine pump can be turned off and the operating frequency of the second fluorine pump can be increased at the same time, depending on the current operating situation. For example, currently only the first compressor and the first fluorine pump are working, then the first compressor is turned off and the operating frequency of the first fluorine pump is increased; currently the first compressor and the first fluorine pump and the second compressor and the second fluorine pump are all working, then the first compressor can be turned off and the operating frequency of the first fluorine pump can be increased, or the second compressor can be turned off and the operating frequency of the second fluorine pump can be increased, which is not limited here. By increasing the operating frequency of the fluorine pump while turning off the compressor, the large temperature fluctuation caused by turning off the compressor is offset, thereby preventing the compressor from starting again, avoiding frequent starts and stops of the compressor, extending the service life of the compressor, and improving reliability.

[0033] In one embodiment, if Figure 2 As shown, the step S110 includes: S111-S112.

[0034] S111, determining whether the return air temperature is greater than or equal to the preset return air temperature threshold;

[0035] S112: If yes, control the first compressor and the first fluorine pump to start and operate at rated frequencies, and control the second compressor and the second fluorine pump to start and operate at rated frequencies.

[0036] In this embodiment, the preset return air temperature threshold is the alarm value of the room temperature. When the return air temperature is higher than the preset return air temperature threshold, it means that the room is overheated and needs a large amount of cooling to cool down. 回 and preset return air temperature threshold T 报 , if T 回 ≥T 报 , indicating that the current computer room is overheated, all refrigeration components are turned on for cooling, so the first compressor, the first fluorine pump, the second compressor and the second fluorine pump are all turned on and run at the rated frequency. Among them, the first compressor and the first fluorine pump are turned on first, and after an interval of one minute, the second compressor and the second fluorine pump are turned on to release a large amount of cold air as soon as possible to cool the computer room, so that the temperature of the computer room drops below the preset return air temperature threshold as soon as possible, avoiding overheating of the machines in the computer room and improving safety and reliability.

[0037] In one embodiment, if Figure 3 As shown, the step S120 includes: S121-S124.

[0038] S121, determining whether the return air temperature is less than the sum of the target setting temperature and the preset accuracy value and greater than the difference between the target setting temperature and the preset accuracy value;

[0039] S122: If yes, obtain a first accumulated running time of the first compressor and a second accumulated running time of the second compressor, and compare the first accumulated running time with the second accumulated running time;

[0040] S123, if the first accumulated operating time is greater than the second accumulated operating time, controlling the first compressor to shut down and controlling the first fluorine pump to operate at a maximum operating frequency;

[0041] S124: If the second accumulated operating time is greater than the first accumulated operating time, the second compressor is controlled to be turned off and the second fluorine pump is controlled to operate at a maximum operating frequency.

[0042] In this embodiment, the preset accuracy value is used to define the temperature range, which is a constant. For example, the preset accuracy value is set to 1°C, and the current set temperature is 24°C. Then, a temperature range of 23°C-25°C can be defined by the preset accuracy value. After the refrigeration component is running, the unit begins to release cold air. At this time, the return air temperature is continuously monitored, and the return air temperature will gradually decrease until it approaches the target set temperature. It should be noted that the compressor is not shut down until the return air temperature is equal to or lower than the target set temperature. Instead, the compressor can be shut down when the return air temperature is close to the target set temperature. For example, the compressor can be shut down when it is slightly higher than the target set temperature. Specifically, the preset accuracy value T 精 To adjust, the sum of the target set temperature and the preset accuracy value is T 设 +T 精 The difference between the target set temperature and the preset accuracy value is T 设 -T 精 , when T 设 -T 精 <T 回 <T 设 +T 精 , it means that the current return air temperature has dropped to near the target set temperature, and the compressor can be shut down. Among them, when shutting down the compressor, you can choose to shut down the first compressor or the second compressor. In this embodiment, the compressor with a longer cumulative running time is shut down. Specifically, the first cumulative running time t1 of the first compressor is obtained, and the second cumulative running time t2 of the second compressor is obtained. Compare t1 and t2, and select the larger one. If t1>t2, it means that the cumulative running time of the first compressor is longer, then the first compressor is shut down and the first fluorine pump is operated at the maximum operating frequency; if t2>t1, it means that the cumulative running time of the second compressor is longer, then the second compressor is shut down and the second fluorine pump is operated at the maximum operating frequency. By comparing the cumulative running time and shutting down the compressor with a longer cumulative running time, the running time of the two compressors can be balanced, so that the use time of the two compressors is as similar as possible, avoiding the situation of using the same compressor for a long time, and extending the service life of the compressor; and the running frequency of the fluorine pump is adjusted to the maximum, the refrigeration effect is improved as much as possible, and large temperature fluctuations caused by shutting down the compressor are avoided, and the compressor is prevented from starting again, solving the problem of frequent start and stop of the compressor.

[0043] In another embodiment, if Figure 4 As shown, the step S110 includes: S211-S212.

[0044] S211, determining whether the return air temperature is less than the preset return air temperature threshold and greater than the sum of the target setting temperature and a preset accuracy value;

[0045] S212: If yes, control the first compressor and the first fluorine pump to start and operate at rated frequency, and control the second fluorine pump to start and operate at rated frequency.

[0046] In this embodiment, the target setting temperature is the temperature set by the user. If the temperature of the computer room is at the target setting temperature, it means that the current temperature of the computer room is suitable. However, if the temperature of the computer room is greater than the target setting temperature, it means that the temperature of the computer room is high and a larger cooling capacity is required for cooling. Specifically, by comparing the return air temperature T 回 and the target set temperature T 设 And preset return air temperature threshold T 报 , if T 设 +T 精 <T 回 <T 报 , indicating that although the current room temperature is not overheated, the room temperature is high. It is not necessary to turn on all refrigeration components for cooling, but a compressor still needs to be turned on to provide sufficient cooling capacity. Therefore, the first compressor and the first fluorine pump are controlled to be turned on and run at the rated frequency. The second compressor can be turned off, and only the second fluorine pump is turned on and runs at the rated frequency. By turning on these refrigeration components, sufficient cooling capacity is provided for cooling, so that the room temperature drops to the target set temperature as soon as possible, avoiding excessive room temperature and improving the stability and reliability of the machine operation.

[0047] In another embodiment, if Figure 5 As shown, the step S120 includes: S221-S222.

[0048] S221, determining whether the return air temperature is less than the sum of the target setting temperature and a preset accuracy value and greater than the target setting temperature;

[0049] S222: If yes, control the first compressor to be turned off and control the first fluorine pump to operate at the maximum operating frequency.

[0050] In this embodiment, after the refrigeration component is running, the unit starts to release cold air. At this time, the return air temperature is continuously monitored and the return air temperature gradually decreases. The sum of the target set temperature and the preset accuracy value is T 设 +T 精 , when T 设 <T 回 <T 设 +T 精, it means that the current return air temperature has dropped to near the target set temperature, and the compressor can be shut down. In this embodiment, since only the first compressor was running before, and the second compressor was not turned on, this embodiment shuts down the first compressor and runs the first fluorine pump at the maximum operating frequency to maximize the refrigeration effect, avoid large temperature fluctuations caused by shutting down the compressor, prevent the compressor from starting again, and solve the problem of frequent start and stop of the compressor.

[0051] In yet another embodiment, Figure 6 As shown, the step S110 includes: S311-S312.

[0052] S311, determining whether the return air temperature is less than the sum of the target setting temperature and the preset accuracy value and greater than the difference between the target setting temperature and the preset accuracy value;

[0053] S312: If yes, control the first fluorine pump and the second fluorine pump to operate at rated frequency.

[0054] In this embodiment, if the temperature of the computer room is near the target set temperature, it means that the current temperature of the computer room is suitable and only a small amount of cooling is needed for cooling. 回 and the target set temperature T 设 The sum of the target set temperature and the preset accuracy value is T 设 +T 精 The difference between the target set temperature and the preset accuracy value is T 设 -T 精 , if T 设 -T 精 <T 回 <T 设 +T 精 , indicating that the current room temperature is already near the target set temperature, and there is no need to turn on the compressor for cooling. Only the fluorine pump needs to be turned on to provide enough cooling to lower the temperature. Therefore, the first fluorine pump and the second fluorine pump are turned on and run at the rated frequency. Among them, the first fluorine pump is turned on first, and after an interval of 30 seconds, the second fluorine pump is turned on to make the room temperature reach the target set temperature, ensure that the room temperature is appropriate, and improve safety and reliability.

[0055] In yet another embodiment, Figure 7 As shown, after the step S312, the following further includes: S321-S322. S321, determining whether the return air temperature is less than the difference between the target setting temperature and the preset accuracy value;

[0056] S322: If yes, control the first fluorine pump to be turned off and control the second fluorine pump to operate at the lowest operating frequency.

[0057] In this embodiment, after the refrigeration component is running, the unit starts to release cold air. At this time, the return air temperature is continuously monitored and the return air temperature gradually decreases. The difference between the target set temperature and the preset accuracy value is T 设 -T 精 , when T 回 <T 设 -T 精 , indicating that the current room temperature has dropped to slightly below the target set temperature. One of the fluorine pumps can be turned off. Only one fluorine pump is needed to provide enough cooling capacity to maintain the current temperature. You can choose to turn off the first fluorine pump or the second fluorine pump. In this embodiment, the first fluorine pump is turned off, and the operating frequency of the second fluorine pump is adjusted to the maximum at the same time, so that the second fluorine pump runs at the lowest operating frequency to prevent large temperature fluctuations caused by turning off all cooling capacity at once.

[0058] In other embodiments, if T 回 <T 设 -T 精 , indicating that the current room temperature is slightly lower than the target set temperature, indicating that the room does not currently need to be cooled and there is no need to turn on the cooling components. You only need to turn on the two internal fans to ensure air circulation in the room.

[0059] In addition, in order to illustrate the method of the embodiment of the present invention, as shown in FIG. Figure 8 , which is explained below through a specific control process.

[0060] First, turn on the computer and load the application program, initialize the program and check whether the load is normal, then determine whether the outdoor unit ambient temperature is lower than H0 continuously within T0, because the fluorine pump can only have a good cooling effect when the outdoor unit ambient temperature is lower than H0. H0 is generally 5°C. If it is not lower than H0, turn off the fluorine pump. If it is lower than H0, turn on the internal fan and start to detect the ambient temperature of the indoor unit of the unit, that is, the return air temperature.

[0061] To T 回 Perform a step-by-step judgment of the temperature from high to low. First, perform the first-level judgment to determine T 回 ≥T 报 If yes, it means that the required refrigeration capacity is large, turn on the first compressor and the first fluorine pump and turn on the second compressor and the second fluorine pump for refrigeration, T 回 Gradually reduce and continue to monitor T 回 , and then judge T 设 -T 精 <T 回 <T 设 +T 精 If so, shut down the compressor with the longest cumulative running time and simultaneously increase the operating frequency of the corresponding fluorine pump to the maximum.

[0062] If T is not satisfied回 ≥T 报 , then proceed to the next level of temperature judgment, judging T 设 +T 精 <T 回 <T 报 If yes, it means that the required refrigeration capacity is large, so turn on the first compressor and the first fluorine pump and turn on the second fluorine pump for refrigeration, T 回 Gradually reduce and continue to monitor T 回 , and then judge T 设 <T 回 <T 设 +T 精 If yes, shut down the first compressor and simultaneously increase the operating frequency of the first fluorine pump to the maximum.

[0063] If T is not satisfied 设 +T 精 <T 回 <T 报 , then proceed to the next level of temperature judgment, judging T 设 -T 精 <T 回 <T 设 +T 精 If yes, it means the required refrigeration capacity is small. Turn on the first fluorine pump and the second fluorine pump for refrigeration. 回 Gradually reduce and continue to monitor T 回 , and then judge T 回 <T 设 -T 精 If yes, turn off the first fluorine pump and lower the operating frequency of the second fluorine pump to the lowest.

[0064] If T is not satisfied 设 -T 精 <T 回 <T 设 +T 精 , then proceed to the next level of temperature judgment, judging T 回 <T 设 -T 精 If yes, it means that refrigeration is not needed at present. Turn off the two compressors and two fluorine pumps, and only turn on the two internal fans to ensure air circulation.

[0065] In summary, the embodiment of the present application presets the return air temperature threshold T 报 , Target setting temperature T 设 , preset precision value T 精Establish a dynamic temperature gradient judgment, and judge the current required cooling capacity of the computer room step by step from high to low. By judging the required cooling capacity, the corresponding number of refrigeration components can be controlled to operate. The greater the required cooling capacity, the more refrigeration components will be turned on, and vice versa. The required cooling capacity can be matched as much as possible to accurately control the temperature of the computer room. At the same time, the redundant refrigeration components are turned off in time. It is important to increase the operating frequency of the fluorine pump while turning off the compressor. This can improve the refrigeration effect, offset the cooling loss caused by turning off the compressor, avoid large temperature fluctuations, and prevent the compressor from starting again. This solves the problem of frequent start and stop of the compressor and improves the safety and stability of the dual fluorine pump refrigeration system.

[0066] Fig. 9 FIG. 4 is a schematic block diagram of a control device 400 of a dual fluorine pump refrigeration system provided by an embodiment of the present invention. Fig. 9 As shown, corresponding to the control method of the double fluorine pump refrigeration system, the present invention also provides a control device 400 of the double fluorine pump refrigeration system. The control device 400 of the double fluorine pump refrigeration system includes a unit for executing the control method of the double fluorine pump refrigeration system, and the device can be configured in a computer device. Fig. 9 The control device 400 of the double fluorine pump refrigeration system includes: a control unit 401 and a closing unit 402.

[0067] Among them, the control unit 401 is used to obtain the return air temperature and the target setting temperature, and control the operation of the first compressor, the first fluorine pump, the second compressor and the second fluorine pump according to the return air temperature, the target setting temperature and the preset return air temperature threshold; the shutdown unit 402 is used to monitor the return air temperature and when the return air temperature approaches the target setting temperature, control the first compressor to shut down and increase the operating frequency of the first fluorine pump, or control the second compressor to shut down and increase the operating frequency of the second fluorine pump.

[0068] In one embodiment, the control unit 401 includes: a first judgment unit and a first control subunit.

[0069] Among them, the first judgment unit is used to judge whether the return air temperature is greater than or equal to the preset return air temperature threshold; the first control subunit is used to control the first compressor and the first fluorine pump to start and run at the rated frequency if so, and to control the second compressor and the second fluorine pump to start and run at the rated frequency.

[0070] In one embodiment, the closing unit 402 includes: a second judgment unit, a comparison unit, a first closing sub-unit and a second closing sub-unit.

[0071] Among them, the second judgment unit is used to judge whether the return air temperature is less than the sum of the target setting temperature and the preset accuracy value and greater than the difference between the target setting temperature and the preset accuracy value; the comparison unit is used to obtain the first cumulative operating time of the first compressor and the second cumulative operating time of the second compressor, and compare the first cumulative operating time with the second cumulative operating time; the first closing subunit is used to control the first compressor to close and control the first fluorine pump to run at the maximum operating frequency if the first cumulative operating time is greater than the second cumulative operating time; the second closing subunit is used to control the second compressor to close and control the second fluorine pump to run at the maximum operating frequency if the second cumulative operating time is greater than the first cumulative operating time.

[0072] In another embodiment, the control unit 401 further includes: a third judgment unit and a second control subunit.

[0073] Among them, the third judgment unit is used to judge whether the return air temperature is less than the preset return air temperature threshold and greater than the sum of the target setting temperature and the preset accuracy value; the second control subunit is used to control the first compressor and the first fluorine pump to start and run at the rated frequency if so, and to control the second fluorine pump to start and run at the rated frequency.

[0074] In another embodiment, the closing unit 402 further includes: a fourth judgment unit and a third closing sub-unit.

[0075] Among them, the fourth judgment unit is used to judge whether the return air temperature is less than the sum of the target setting temperature and the preset accuracy value and greater than the target setting temperature; the third closing subunit is used to control the first compressor to close and control the first fluorine pump to operate at the maximum operating frequency if so.

[0076] In yet another embodiment, the control unit 401 further includes: a fifth judgment unit and a third control subunit.

[0077] Among them, the fifth judgment unit is used to judge whether the return air temperature is less than the sum of the target setting temperature and the preset accuracy value and greater than the difference between the target setting temperature and the preset accuracy value; the third control subunit is used to control the first fluorine pump and the second fluorine pump to operate at rated frequency if so.

[0078] In yet another embodiment, the closing unit 402 further includes: a sixth judgment unit and a fourth closing sub-unit.

[0079] Among them, the sixth judgment unit is used to judge whether the return air temperature is less than the difference between the target setting temperature and the preset accuracy value; the fourth closing subunit is used to control the first fluorine pump to close and control the second fluorine pump to operate at the lowest operating frequency if so.

[0080] The control device 400 of the dual fluorine pump refrigeration system can be implemented in the form of a computer program. The computer program can be used in Fig.10 Runs on the computer device shown.

[0081] See also Fig.10 , Fig.10 5 is a schematic block diagram of a computer device provided in an embodiment of the present application. The computer device 500 may be a terminal.

[0082] See also Fig.10 The computer device 500 includes a processor 502 , a memory and a network interface 505 connected via a system bus 501 , wherein the memory may include a non-volatile storage medium 503 and an internal memory 504 .

[0083] The non-volatile storage medium 503 can store an operating system 5031 and a computer program 5032. The computer program 5032 includes program instructions, and when the program instructions are executed, the processor 502 can execute a control method for a dual fluorine pump refrigeration system.

[0084] The processor 502 is used to provide computing and control capabilities to support the operation of the entire computer device 500 .

[0085] The internal memory 504 provides an environment for the operation of the computer program 5032 in the non-volatile storage medium 503. When the computer program 5032 is executed by the processor 502, the processor 502 can execute a control method for a dual fluorine pump refrigeration system.

[0086] The network interface 505 is used to communicate with other devices over the network. Fig.10 The structure shown in the figure is merely a block diagram of a portion of the structure related to the solution of the present application, and does not constitute a limitation on the computer device 500 to which the solution of the present application is applied. The specific computer device 500 may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0087] The processor 502 is used to run a computer program 5032 stored in the memory to implement the steps of the above method.

[0088] It should be understood that in the embodiment of the present application, the processor 502 may be a central processing unit (CPU), and the processor 502 may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. Among them, the general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0089] It can be understood by those skilled in the art that all or part of the processes in the method for implementing the above embodiment can be completed by instructing the relevant hardware through a computer program. The computer program includes program instructions, and the computer program can be stored in a storage medium, which is a computer-readable storage medium. The program instructions are executed by at least one processor in the computer system to implement the process steps of the embodiment of the above method.

[0090] Therefore, the present invention also provides a storage medium. The storage medium may be a computer-readable storage medium. The storage medium stores a computer program, wherein the computer program includes program instructions. When the program instructions are executed by a processor, the processor executes the steps of the above method.

[0091] The storage medium may be a USB flash drive, a mobile hard disk, a read-only memory (ROM), a magnetic disk, or an optical disk, etc., which are computer-readable storage media that can store program codes.

[0092] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in terms of function in the above description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0093] In the several embodiments provided by the present invention, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of each unit is only a logical function division, and there may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed.

[0094] The steps in the method of the embodiment of the present invention can be adjusted in order, combined and deleted according to actual needs. The units in the device of the embodiment of the present invention can be combined, divided and deleted according to actual needs. In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0095] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a storage medium. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including several instructions for a computer device to execute all or part of the steps of the method described in each embodiment of the present invention.

[0096] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0097] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

[0098] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A control method for a double fluorine pump refrigeration system, characterized in that: The dual fluorine pump refrigeration system comprises: a first compressor, a first fluorine pump, a second compressor and a second fluorine pump, and the method comprises: Acquire the return air temperature and the target setting temperature, and control the operation of the first compressor, the first fluorine pump, the second compressor and the second fluorine pump according to the return air temperature, the target setting temperature and the preset return air temperature threshold; Monitor the return air temperature and when the return air temperature approaches the target set temperature, control the first compressor to shut down and increase the operating frequency of the first fluorine pump, or control the second compressor to shut down and increase the operating frequency of the second fluorine pump.

2. The method according to claim 1, characterized in that: The step of obtaining the return air temperature and the target setting temperature, and controlling the operation of the first compressor, the first fluorine pump, the second compressor, and the second fluorine pump according to the return air temperature, the target setting temperature, and a preset return air temperature threshold, comprises: Determining whether the return air temperature is greater than or equal to the preset return air temperature threshold; If so, the first compressor and the first fluorine pump are controlled to be turned on and run at rated frequencies, and the second compressor and the second fluorine pump are controlled to be turned on and run at rated frequencies.

3. The method according to claim 2, characterized in that The step of monitoring the return air temperature and controlling the first compressor to shut down and increasing the operating frequency of the first fluorine pump when the return air temperature approaches the target set temperature, or controlling the second compressor to shut down and increasing the operating frequency of the second fluorine pump, comprises: Determine whether the return air temperature is less than the sum of the target setting temperature and the preset accuracy value and greater than the difference between the target setting temperature and the preset accuracy value; If yes, obtaining a first accumulated running time of the first compressor and a second accumulated running time of the second compressor, and comparing the first accumulated running time with the second accumulated running time; If the first accumulated operation time is greater than the second accumulated operation time, controlling the first compressor to be turned off and controlling the first fluorine pump to operate at a maximum operating frequency; If the second accumulated operating time is greater than the first accumulated operating time, the second compressor is controlled to be turned off and the second fluorine pump is controlled to operate at a maximum operating frequency.

4. The method according to any one of claims 1 to 3, characterized in that: The step of obtaining the return air temperature and the target setting temperature, and controlling the operation of the first compressor, the first fluorine pump, the second compressor, and the second fluorine pump according to the return air temperature, the target setting temperature, and a preset return air temperature threshold, comprises: Determine whether the return air temperature is less than the preset return air temperature threshold and greater than the sum of the target setting temperature and the preset accuracy value; If so, the first compressor and the first fluorine pump are controlled to be turned on and run at rated frequency, and the second fluorine pump is controlled to be turned on and run at rated frequency.

5. The method according to claim 4, characterized in that The step of monitoring the return air temperature and controlling the first compressor to shut down and increasing the operating frequency of the first fluorine pump when the return air temperature approaches the target set temperature, or controlling the second compressor to shut down and increasing the operating frequency of the second fluorine pump, comprises: Determine whether the return air temperature is less than the sum of the target setting temperature and a preset accuracy value and greater than the target setting temperature; If so, the first compressor is controlled to be turned off and the first fluorine pump is controlled to operate at the maximum operating frequency.

6. The method according to claim 4, characterized in that The step of obtaining the return air temperature and the target setting temperature, and controlling the operation of the first compressor, the first fluorine pump, the second compressor, and the second fluorine pump according to the return air temperature, the target setting temperature, and a preset return air temperature threshold, comprises: Determine whether the return air temperature is less than the sum of the target setting temperature and the preset accuracy value and greater than the difference between the target setting temperature and the preset accuracy value; If so, the first fluorine pump and the second fluorine pump are controlled to operate at rated frequency.

7. The method according to claim 6, characterized in that After the step of controlling the first fluorine pump and the second fluorine pump to operate at rated frequencies, the method further includes: Determining whether the return air temperature is less than the difference between the target set temperature and a preset accuracy value; If so, the first fluorine pump is controlled to be turned off and the second fluorine pump is controlled to operate at the lowest operating frequency.

8. A control device for a double fluorine pump refrigeration system, characterized in that: The apparatus comprises means for executing the method according to any one of claims 1 to 7 above.

9. A computer device, characterized in that: The computer device comprises a memory and a processor, the memory stores a computer program, and the processor implements the method according to any one of claims 1 to 7 when executing the computer program.

10. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, and when the computer program is executed by a processor, the method according to any one of claims 1 to 7 can be implemented.

Images