Control method, device, equipment and storage medium for fluorine pump dual-circulation precision air conditioning

Abstract

The present invention provides a control method, device, equipment and storage medium for a fluorine pump dual-circulation precision air conditioner, which includes: obtaining the external ambient temperature; adjusting the operating mode of the unit to an operating mode corresponding to the ambient temperature range according to the correspondence between the unit's multiple operating modes and a preset ambient temperature range for the external ambient temperature and the external ambient temperature; linearly adjusting the target high-pressure temperature of the condenser according to the unit's operating mode, the external ambient temperature and the operating frequency of the refrigerant power source. Since the unit linearly adjusts the target high-pressure temperature of the condenser according to the external ambient temperature and the operating frequency of the refrigerant power source when operating in any mode, there is a smaller target high-pressure temperature change when the mode is switched, thereby ensuring the stable operation of the unit; at the same time, it can be adjusted to a suitable target high-pressure temperature according to the external ambient temperature and the operating frequency of the refrigerant power source, which has a more significant energy-saving effect than the existing technology.

Description

Technical Field

[0001] The present invention relates to the field of precision air-conditioning control, and in particular to a control method, device, equipment and storage medium for a fluorine pump dual-circulation precision air-conditioning. Background Art

[0002] Computer room air conditioning requires year-round cooling and 24 / 7 uninterrupted operation. With the growing market and industry changes driven by the digital economy, the energy efficiency of precision air conditioning is gaining increasing attention. High energy efficiency in the market means low carbon emissions and economic benefits. Fluorine pump dual-circulation air conditioning has an increasing share of precision air conditioning due to its inherent installation and energy efficiency advantages in data center energy-saving retrofits.

[0003] Currently, in the fluorine pump dual-circulation air conditioner, in the compressor mode or the fluorine pump mode, the target high-pressure temperature of the condenser (i.e., the saturation temperature corresponding to the condenser high pressure) is set to a fixed value. However, due to the different properties of the refrigerant power source in the compressor mode and the fluorine pump mode, even under the same external ambient temperature, the difference in the target high-pressure temperature between the two modes is still too large. Therefore, when the mode is switched, the operating status of some equipment in the system will fluctuate significantly due to the excessive change in the condenser high-pressure saturation temperature, which will seriously affect the smooth operation of the unit. Summary of the Invention

[0004] The main purpose of the present invention is to provide a control method, device, equipment and storage medium for a fluorine pump dual-circulation precision air conditioner, aiming to solve the problem that the target high-pressure temperature of the condenser of the fluorine pump dual-circulation precision air conditioner changes too much when the mode is switched, thereby affecting the operation of the unit.

[0005] In a first aspect, the present invention provides a

[0006] A control method for a fluorine pump dual-circulation precision air conditioner, comprising:

[0007] Get the external ambient temperature;

[0008] adjusting the operating mode of the unit to an operating mode corresponding to the ambient temperature range according to the corresponding relationship between the multiple operating modes of the unit and the preset ambient temperature range for the external ambient temperature and the external ambient temperature;

[0009] The target high-pressure temperature of the condenser is linearly adjusted according to the operating mode of the unit, the external ambient temperature and the operating frequency of the refrigerant power source.

[0010] In some embodiments, as the external ambient temperature continuously increases, the unit sequentially includes a fluorine pump mode in which the fluorine pump operates independently, a fluorine pump-compressor mode in which the fluorine pump and the compressor operate simultaneously, and a compressor mode in which the compressor operates independently.

[0011] In some embodiments, the target high-pressure temperature of the condenser is linearly adjusted according to the operating mode of the unit, the external ambient temperature and the operating frequency of the refrigerant power source. In the compressor mode or the fluorine pump mode, the target high-pressure temperature is linearly adjusted in a positive correlation with both the external ambient temperature and the operating frequency of the refrigerant power source.

[0012] In some embodiments, the target high-pressure temperature of the condenser is linearly adjusted according to the operating mode of the unit, the external ambient temperature and the operating frequency of the refrigerant power source. In the compressor-fluorine pump mode, the target high-pressure temperature is positively correlated with the external ambient temperature and the operating frequency of the compressor, and is linearly adjusted in a negative correlation with the operating frequency of the fluorine pump.

[0013] In some embodiments, the target high-pressure temperature of the condenser is linearly adjusted according to the operating mode of the unit, the external ambient temperature and the operating frequency of the refrigerant power source, and the target high-pressure temperature is obtained according to the external ambient temperature, the operating frequency of the refrigerant power source and the minimum heat exchange temperature difference of the condenser.

[0014] In some embodiments, the target high-pressure temperature is obtained according to the external ambient temperature, the operating frequency of the refrigerant power source, and the minimum heat exchange temperature difference of the condenser.

[0015] Tc=T4+k1*f 压 +k2*f 泵 +k3

[0016] Tc is the target high pressure temperature of the condenser;

[0017] T4 is the current external ambient temperature;

[0018] k1 is the set frequency-temperature coefficient of the compressor, and it corresponds to different coefficient values ​​in different operating modes of the unit;

[0019] k2 is the set frequency-temperature coefficient of the fluorine pump, and it corresponds to different coefficient values ​​in different operating modes of the unit;

[0020] fpressure is a linear function that is positively correlated with the operating frequency of the compressor;

[0021] f pump is a linear function that is positively correlated with the operating frequency of the fluorine pump;

[0022] k3 is the minimum heat exchange temperature difference of the condenser.

[0023] In some embodiments, two adjacent operating modes in the ambient temperature range partially overlap to form a transition temperature range;

[0024] The operating mode of the unit is adjusted to the operating mode corresponding to the external ambient temperature. If the external ambient temperature changes to within the transition temperature range, the unit maintains the operating mode unchanged until the external ambient temperature exceeds the transition temperature range, and then adjusts to the operating mode corresponding to the external ambient temperature.

[0025] In a second aspect, the present invention further provides a control device for a fluorine pump dual-circulation precision air conditioner, which adopts the following technical solution:

[0026] A control device for a fluorine pump dual-circulation precision air conditioner, comprising:

[0027] The acquisition module is configured to acquire the external environment temperature.

[0028] An adjustment module is configured to adjust the operating mode of the unit to an operating mode corresponding to the ambient temperature range according to the correspondence between the multiple operating modes of the unit and the preset ambient temperature range for the external ambient temperature and the external ambient temperature; and linearly adjust the target high-pressure temperature of the condenser according to the operating mode of the unit, the external ambient temperature and the operating frequency of the refrigerant power source.

[0029] In a third aspect, the present invention further provides a control device for a fluorine pump dual-circulation precision air conditioner, which adopts the following technical solution:

[0030] A control device for a fluorine pump dual-circulation precision air conditioner includes a processor, a memory, and a control program for the fluorine pump dual-circulation precision air conditioner stored in the memory and executable by the processor. When the control program for the fluorine pump dual-circulation precision air conditioner is executed by the processor, the steps of the control method for the fluorine pump dual-circulation precision air conditioner as described above are implemented.

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

[0032] A storage medium stores a control program for a fluorine pump dual-circulation precision air conditioner. When the control program for the fluorine pump dual-circulation precision air conditioner is executed by a processor, the steps of the control method for the fluorine pump dual-circulation precision air conditioner as described above are implemented.

[0033] The control method, device, equipment and storage medium of the fluorine pump dual-circulation precision air conditioner provided by the present invention, since the target high-pressure temperature of the condenser is linearly adjusted according to the external ambient temperature and the operating frequency of the refrigerant power source when the unit is operating in any mode, the target high-pressure temperature will be linearly adjusted according to the change of the external ambient temperature, and the front and rear target high-pressure temperatures during mode switching can continue to approach each other according to the change of the external ambient temperature, thereby effectively reducing the difference in the target high-pressure temperature between the two modes at the switching moment. Compared with the prior art in which each unit has one or more fixed target high-pressure temperatures in each operating mode, the present invention can have a smaller target high-pressure temperature change during mode switching, thereby ensuring the stable operation of the unit; at the same time, it also makes it possible for the unit to adjust to a suitable target high-pressure temperature according to the external ambient temperature and the operating frequency of the refrigerant power source when operating in any mode, which has a more significant energy-saving effect than the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the hardware structure of the control device of the fluorine pump dual-circulation precision air conditioner involved in the embodiment of the present invention;

[0035] Figure 2 This is a flow chart of a first embodiment of a control method for a fluorine pump dual-circulation precision air conditioner according to the present invention;

[0036] Figure 3 Schematic diagram of the change of target high-pressure temperature with respect to ambient temperature in the control method of the fluorine pump dual-circulation precision air conditioner of the present invention;

[0037] Figure 4 This is a functional module diagram of the first embodiment of the control device for the fluorine pump dual-circulation precision air conditioner of the present invention.

[0038] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

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

[0040] Computer room air conditioning requires year-round cooling and 24 / 7 uninterrupted operation. With the growing market and industry changes driven by the digital economy, the energy efficiency of precision air conditioning is gaining increasing attention. High energy efficiency in the market means low carbon emissions and economic benefits. Fluorine pump dual-circulation air conditioning has an increasing share of precision air conditioning due to its inherent installation and energy efficiency advantages in data center energy-saving retrofits.

[0041] Currently, in the fluorine pump dual-circulation air conditioner, in the compressor mode or the fluorine pump mode, the target high-pressure temperature of the condenser (i.e., the saturation temperature corresponding to the condenser high pressure) is set to a fixed value. However, due to the different properties of the refrigerant power source in the compressor mode and the fluorine pump mode, even under the same external ambient temperature, the difference in the target high-pressure temperature between the two modes is still too large. Therefore, when the mode is switched, the operating status of some equipment in the system will fluctuate significantly due to the excessive change in the condenser high-pressure saturation temperature, which will seriously affect the smooth operation of the unit.

[0042] The control method, device, equipment and storage medium of the fluorine pump dual-circulation precision air conditioner provided by the present invention have the following invention points: since the target high-pressure temperature of the condenser is linearly adjusted according to the external ambient temperature and the operating frequency of the refrigerant power source when the unit is operating in any mode, the target high-pressure temperature will be linearly adjusted according to the change of the external ambient temperature, and the front and rear target high-pressure temperatures during mode switching can continue to approach each other according to the change of the external ambient temperature, thereby effectively reducing the difference in the target high-pressure temperature between the two modes at the switching moment. Compared with the prior art in which each unit has one or more fixed target high-pressure temperatures in each operating mode, the present invention can have a smaller target high-pressure temperature change during mode switching, thereby ensuring the stable operation of the unit; at the same time, it also makes the unit adjustable to the appropriate target high-pressure temperature according to the external ambient temperature and the operating frequency of the refrigerant power source when operating in any mode, which has a more significant energy-saving effect than the prior art.

[0043] In a first aspect, an embodiment of the present invention provides a control device for a fluorine pump dual-circulation precision air conditioner, which can be a personal computer (PC), a laptop computer, a server, or other device with data processing capabilities.

[0044] Reference Figure 1 , Figure 1This is a schematic diagram of the hardware structure of the control device of the fluorine pump dual-circulation precision air conditioner involved in the embodiment of the present invention. In the embodiment of the present invention, the control device of the fluorine pump dual-circulation precision air conditioner may include a processor 1001 (such as a central processing unit, CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Among them, the communication bus 1002 is used to realize the connection and communication between these components; the user interface 1003 may include a display (Display), an input unit such as a keyboard (Keyboard); the network interface 1004 may optionally include a standard wired interface, a wireless interface (such as wireless fidelity WIreless-FIdelity, WI-FI interface); the memory 1005 may be a high-speed random access memory (random access memory, RAM), or a stable memory (non-volatile memory), such as a disk memory. The memory 1005 may optionally be a storage device independent of the aforementioned processor 1001. Those skilled in the art will understand that Figure 1 The hardware structure shown in the figure does not constitute a limitation of the present invention, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0045] Continue to refer to Figure 1 , Figure 1 The memory 1005, which serves as a computer storage medium, may include an operating system, a network communication module, a user interface module, and a control program for a fluorine pump dual-circulation precision air conditioner. The processor 1001 may call the control program for a fluorine pump dual-circulation precision air conditioner stored in the memory 1005 and execute the control method for a fluorine pump dual-circulation precision air conditioner provided in an embodiment of the present invention.

[0046] In a second aspect, an embodiment of the present invention provides a control method for a fluorine pump dual-circulation precision air conditioner.

[0047] Reference Figure 2 A control method for a fluorine pump double-circulation precision air conditioner, characterized in that it includes:

[0048] S100, obtaining the external ambient temperature;

[0049] S200, adjusting the operating mode of the unit to an operating mode corresponding to the ambient temperature range according to the correspondence between the multiple operating modes of the unit and the preset ambient temperature range for the external ambient temperature and the external ambient temperature;

[0050] S300 , linearly adjusting the target high-pressure temperature of the condenser according to the operating mode of the unit, the external ambient temperature, and the operating frequency of the refrigerant power source.

[0051] Specifically, in step S300, refer to Figure 3 In any operating mode, the target high-pressure temperature of the condenser is linearly related to the external ambient temperature and the operating frequency of the refrigerant power source, and is adjusted dynamically without limit. Furthermore, in the normal operating state where the indoor temperature of the data center is close to the target cooling temperature, when the mode is not switched, the target high-pressure temperature of the condenser will be gradually and synchronously adjusted linearly as the temperature rises. Therefore, after the mode is switched, the target high-pressure temperature is only affected by the change of the refrigerant power source. Compared with the existing technology in which the difference between the fixed target high-pressure temperature before and after the switch is too large, the difference between the target high-pressure temperature before and after the switch of the present invention is significantly reduced. At the same time, the target high-pressure temperature can also be dynamically adjusted to a more appropriate temperature value as the external ambient temperature changes, which has a significant energy-saving effect.

[0052] At the same time, since the target high-pressure temperature is still linearly adjusted by the operating frequency of the refrigerant power source when the external ambient temperature remains unchanged, the target high-pressure temperature can also be dynamically adjusted steplessly according to the difference between the current indoor temperature and the target cooling temperature when the unit is running, so that the condenser has a larger target high-pressure temperature when the difference between the indoor temperature and the target cooling temperature is large, and has a smaller target high-pressure temperature when the difference is small, so that the unit can operate more efficiently and energy-saving.

[0053] Furthermore, in some preferred embodiments, as the external ambient temperature continuously increases, the unit sequentially includes a fluorine pump mode in which the fluorine pump operates independently, a fluorine pump-compressor mode in which the fluorine pump and the compressor operate simultaneously, and a compressor mode in which the compressor operates independently.

[0054] In this way, by setting up a fluorine pump-compressor mode in which the fluorine pump and the compressor run simultaneously within the ambient temperature range between the fluorine pump mode and the compressor mode, it is possible to avoid directly switching the fluorine pump mode to the compressor mode when switching modes at the same external ambient temperature, which would cause the target high-pressure temperature of the condenser to jump too much. At the same time, it is also possible to compensate for the target high-pressure temperature of the condenser by utilizing the ambient cold source of the external environment through the fluorine pump within the ambient temperature range. This is more beneficial in terms of energy saving than the compressor mode, and faster in terms of cooling effect than the fluorine pump mode.

[0055] Furthermore, in some preferred embodiments, in the step S300, the target high-pressure temperature of the condenser is linearly adjusted according to the operating mode of the unit, the external ambient temperature and the operating frequency of the refrigerant power source. In the compressor mode or the fluorine pump mode, the target high-pressure temperature is linearly adjusted in a positive correlation with both the external ambient temperature and the operating frequency of the refrigerant power source.

[0056] Furthermore, in some preferred embodiments, in the step S300, the target high-pressure temperature of the condenser is linearly adjusted according to the operating mode of the unit, the external ambient temperature and the operating frequency of the refrigerant power source. In the compressor-fluorine pump mode, the target high-pressure temperature is positively correlated with the external ambient temperature and the operating frequency of the compressor, and is linearly adjusted in a negative correlation with the operating frequency of the fluorine pump.

[0057] Furthermore, in some preferred embodiments, the step S300 linearly adjusts the target high-pressure temperature of the condenser according to the operating mode of the unit, the external ambient temperature and the operating frequency of the refrigerant power source, and the target high-pressure temperature is obtained according to the external ambient temperature, the operating frequency of the refrigerant power source and the minimum heat exchange temperature difference of the condenser.

[0058] With this setting, the significance of the minimum heat exchange temperature difference is to ensure that in any mode, there is a minimum limit value for the difference between the target high-pressure temperature Tc and the external ambient temperature (i.e. the heat exchange temperature difference of the condenser), and the condenser will not be unable to operate due to the target high-pressure temperature of the condenser being too low due to the frequency of the refrigerant power source and the external ambient temperature being too low, thereby ensuring the operation and heat exchange effect of the condenser.

[0059] Furthermore, the target high-pressure temperature is obtained according to the external ambient temperature, the operating frequency of the refrigerant power source and the minimum heat exchange temperature difference of the condenser.

[0060] Tc=T4+k1*f 压 +k2*f 泵 +k3

[0061] Tc is the target high pressure temperature of the condenser;

[0062] T4 is the current external ambient temperature;

[0063] k1 is the set frequency-temperature coefficient of the compressor, and it corresponds to different coefficient values ​​in different operating modes of the unit;

[0064] k2 is the set frequency-temperature coefficient of the fluorine pump, and it corresponds to different coefficient values ​​in different operating modes of the unit;

[0065] fpressure is a linear function that is positively correlated with the operating frequency of the compressor;

[0066] f pump is a linear function that is positively correlated with the operating frequency of the fluorine pump;

[0067] k3 is the minimum heat exchange temperature difference of the condenser.

[0068] In this embodiment, the value of k3 in the above formula is fixed to 7. The specific coefficient values ​​of k1 and k2 in different modes are shown in the following table:

[0069] k1 k2 k3 Compressor mode 8 0 7 Compressor-Fluorine Pump Mode 8 -0.5 7 Fluorine pump mode 0 5 7

[0070] f pressure: (compressor operating frequency - [compressor minimum speed]) / ([compressor maximum speed] - [compressor minimum speed])

[0071] f pump: (Fluorine pump operating frequency - [Fluorine pump minimum speed]) / ([Fluorine pump maximum speed] - [Fluorine pump minimum speed])

[0072] Furthermore, in some preferred embodiments, two adjacent operating modes in the ambient temperature range partially overlap to form a transition temperature range;

[0073] The operating mode of the unit is adjusted to the operating mode corresponding to the external ambient temperature. If the external ambient temperature changes to within the transition temperature range, the unit maintains the operating mode unchanged until the external ambient temperature exceeds the transition temperature range, and then adjusts to the operating mode corresponding to the external ambient temperature.

[0074] This setting allows mode switching to be performed only when the external ambient temperature fluctuates over a large range, so as to avoid frequent switching of the unit's operating mode when the external ambient temperature changes too quickly within a small range, which in turn makes the unit's operating status prone to problems.

[0075] In a third aspect, an embodiment of the present invention further provides a control device for a fluorine pump dual-circulation precision air conditioner.

[0076] Reference Figure 4 , a functional module diagram of the first embodiment of the control device of the fluorine pump dual-circulation precision air conditioner.

[0077] In this embodiment, the control device of the fluorine pump dual-circulation precision air conditioner includes:

[0078] The acquisition module is configured to acquire the external environment temperature.

[0079] The adjustment module is configured to adjust the unit's operating mode to an operating mode corresponding to a preset ambient temperature range for the external ambient temperature based on the correspondence between the unit's various operating modes and the external ambient temperature, and the external ambient temperature; and linearly adjust the target high-pressure temperature of the condenser based on the unit's operating mode, the external ambient temperature, and the operating frequency of the refrigerant power source.

[0080] Among them, the functional implementation of each module in the control device of the above-mentioned fluorine pump dual-circulation precision air conditioner corresponds to the various steps in the control method embodiment of the above-mentioned fluorine pump dual-circulation precision air conditioner, and its functions and implementation processes will not be repeated here one by one.

[0081] In a fourth aspect, an embodiment of the present invention further provides a storage medium.

[0082] The storage medium of the present invention stores a control program for a fluorine pump dual-circulation precision air conditioner, wherein when the control program for the fluorine pump dual-circulation precision air conditioner is executed by a processor, the steps of the control method for the fluorine pump dual-circulation precision air conditioner as described above are implemented.

[0083] Among them, the method implemented when the control program of the fluorine pump dual-circulation precision air conditioner is executed can refer to the various embodiments of the control method of the fluorine pump dual-circulation precision air conditioner of the present invention, and will not be repeated here.

[0084] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or system comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or system. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or system comprising the element.

[0085] The serial numbers of the above embodiments of the present invention are for description only and do not represent the advantages or disadvantages of the embodiments.

[0086] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, or of course by hardware, but in many cases the former is a better embodiment. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes a number of instructions for enabling a terminal device to execute the methods described in various embodiments of the present invention.

[0087] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A control method for a fluorine pump double-circulation precision air conditioner, characterized in that: It includes: Get the external ambient temperature; adjusting the operating mode of the unit to an operating mode corresponding to the ambient temperature range according to the corresponding relationship between the multiple operating modes of the unit and the preset ambient temperature range for the external ambient temperature and the external ambient temperature; linearly adjusting the target high-pressure temperature of the condenser according to the operating mode of the unit, the external ambient temperature, and the operating frequency of the refrigerant power source; During the continuous increase of the external ambient temperature, the unit sequentially includes a fluorine pump mode in which the fluorine pump operates independently, a fluorine pump-compressor mode in which the fluorine pump and the compressor operate simultaneously, and a compressor mode in which the compressor operates independently; The target high-pressure temperature of the condenser is linearly adjusted according to the operating mode of the unit, the external ambient temperature and the operating frequency of the refrigerant power source. In the compressor-fluorine pump mode, the target high-pressure temperature is positively correlated with the external ambient temperature and the operating frequency of the compressor, and is linearly adjusted in a negative correlation with the operating frequency of the fluorine pump.

2. The control method of the fluorine pump double-circulation precision air conditioner according to claim 1, characterized in that: The target high-pressure temperature of the condenser is linearly adjusted according to the operating mode of the unit, the external ambient temperature and the operating frequency of the refrigerant power source. In the compressor mode or the fluorine pump mode, the target high-pressure temperature is linearly adjusted in a positive correlation with both the external ambient temperature and the operating frequency of the refrigerant power source.

3. The control method of the fluorine pump double-circulation precision air conditioner according to claim 1 or 2, characterized in that: The target high-pressure temperature of the condenser is linearly adjusted according to the operating mode of the unit, the external ambient temperature and the operating frequency of the refrigerant power source. The target high-pressure temperature is obtained according to the external ambient temperature, the operating frequency of the refrigerant power source and the minimum heat exchange temperature difference of the condenser.

4. The control method of the fluorine pump double-circulation precision air conditioner as claimed in claim 3, characterized in that: The target high-pressure temperature is obtained according to the external ambient temperature, the operating frequency of the refrigerant power source and the minimum heat exchange temperature difference of the condenser. Tc is the target high pressure temperature of the condenser; T4 is the current external ambient temperature; k1 is the set frequency-temperature coefficient of the compressor, and it corresponds to different coefficient values ​​in different operating modes of the unit; k2 is the set frequency-temperature coefficient of the fluorine pump, and it corresponds to different coefficient values ​​in different operating modes of the unit; fpressure is a linear function that is positively correlated with the operating frequency of the compressor; f pump is a linear function that is positively correlated with the operating frequency of the fluorine pump; k3 is the minimum heat exchange temperature difference of the condenser.

5. The control method of the fluorine pump double-circulation precision air conditioner according to claim 1, characterized in that: Two adjacent operating modes partially overlap in the ambient temperature range to form a transition temperature range; The operating mode of the unit is adjusted to the operating mode corresponding to the external ambient temperature. If the external ambient temperature changes to within the transition temperature range, the unit maintains the operating mode unchanged until the external ambient temperature exceeds the transition temperature range, and then adjusts to the operating mode corresponding to the external ambient temperature.

6. A control device for a fluorine pump double-circulation precision air conditioner, characterized in that: It includes: an acquisition module configured to acquire an external ambient temperature; an adjustment module configured to adjust the operating mode of the unit to an operating mode corresponding to a preset ambient temperature range for the external ambient temperature based on a correspondence between the multiple operating modes of the unit and the preset ambient temperature range for the external ambient temperature and the external ambient temperature; and linearly adjust a target high-pressure temperature of the condenser based on the operating mode of the unit, the external ambient temperature, and an operating frequency of a refrigerant power source; During the continuous increase of the external ambient temperature, the unit sequentially includes a fluorine pump mode in which the fluorine pump operates independently, a fluorine pump-compressor mode in which the fluorine pump and the compressor operate simultaneously, and a compressor mode in which the compressor operates independently; The target high-pressure temperature of the condenser is linearly adjusted according to the operating mode of the unit, the external ambient temperature and the operating frequency of the refrigerant power source. In the fluorine pump-compressor mode, the target high-pressure temperature is positively correlated with the external ambient temperature and the operating frequency of the compressor, and is linearly adjusted in a negative correlation with the operating frequency of the fluorine pump.

7. A control device for a fluorine pump double-circulation precision air conditioner, characterized in that: It includes a processor, a memory, and a control program for a fluorine pump dual-circulation precision air conditioner stored in the memory and executable by the processor. When the control program for the fluorine pump dual-circulation precision air conditioner is executed by the processor, the steps of the control method for the fluorine pump dual-circulation precision air conditioner as described in any one of claims 1 to 5 are implemented.

8. A storage medium, characterized in that: The storage medium stores a control program for a fluorine pump dual-circulation precision air conditioner, wherein when the control program for the fluorine pump dual-circulation precision air conditioner is executed by a processor, the steps of the control method for the fluorine pump dual-circulation precision air conditioner as described in any one of claims 1 to 5 are implemented.

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