Fluorine pump air conditioner control method and device, medium, fluorine pump air conditioner and program product

Abstract

The invention discloses a control method and device of a fluorine pump air conditioner, a medium, the fluorine pump air conditioner and a program product, and relates to the technical field of air conditioners, the fluorine pump air conditioner comprises a condenser and an outer draught fan, and the method comprises the steps that under the condition that the fluorine pump air conditioner is in a fluorine pump mode, a target starting value and a target closing value of the outer draught fan are obtained, a first difference value between the target starting value and the target closing value is smaller than a second difference value between an initial starting value and an initial closing value; the real-time condensation pressure of the condenser is obtained; when the real-time condensation pressure reaches the target starting value, the outer fan is started; and when the real-time condensation pressure reaches the target turn-off value, the outer fan is turned off. Under the condition that the fluorine pump air conditioner is in the fluorine pump mode, the forced heat dissipation time of the fluorine pump air conditioner can be shortened by utilizing the target starting value and the target closing value of the outer fan, and then the problem of excessive condensation of a refrigerant can be avoided.

Description

Technical Field

[0001] This disclosure relates to the field of air conditioning technology, specifically to a control method, device, medium, refrigerant pump air conditioner, and program product. Background Technology

[0002] With the rapid development of data center server rooms, their high energy consumption has become increasingly prominent. As the core infrastructure providing massive computing power, data centers typically house a large number of heat-generating devices such as high-density servers, storage arrays, and network switches. Therefore, achieving efficient heat dissipation while ensuring equipment reliability has become a key technical challenge for energy conservation and consumption reduction in data centers. Refrigerant pump air conditioners are widely used in data centers due to their simple structure and significant energy-saving effects. Therefore, how to better control refrigerant pump air conditioners is an urgent technical problem to be solved. Summary of the Invention

[0003] This summary section is provided to briefly introduce the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solution, nor is it intended to limit the scope of the claimed technical solution.

[0004] In a first aspect, this disclosure provides a control method for a refrigerant pump air conditioner, the refrigerant pump air conditioner including a condenser and an outdoor fan, the method comprising: When the refrigerant pump air conditioner is in refrigerant pump mode, the target start value and target stop value of the outdoor fan are obtained, and the first difference between the target start value and the target stop value is less than the second difference between the initial start value and the initial stop value; Obtain the real-time condensing pressure of the condenser; When the real-time condensing pressure reaches the target start-up value, the external fan is turned on; When the real-time condensing pressure reaches the target shut-off value, the external fan is shut down.

[0005] Secondly, this disclosure provides a control device for a refrigerant pump air conditioner, the device comprising: The first acquisition module is configured to acquire a target start value and a target stop value of the outdoor fan when the refrigerant pump air conditioner is in refrigerant pump mode, wherein a first difference between the target start value and the target stop value is less than a second difference between the initial start value and the initial stop value; The second acquisition module is configured to acquire the real-time condensing pressure of the condenser. The activation module is configured to activate the external fan when the real-time condensing pressure reaches the target activation value. The shutdown module is configured to shut down the external fan when the real-time condensing pressure reaches the target shutdown value.

[0006] Thirdly, this disclosure provides a computer-readable medium having a computer program stored thereon, which, when executed by a processing device, implements the steps of the method described in the first aspect.

[0007] Fourthly, this disclosure provides a refrigerant pump air conditioner, comprising: A storage device on which computer programs are stored; A processing device for executing the computer program in the storage device to implement the steps of the method described in the first aspect.

[0008] Fifthly, this disclosure provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the method described in the first aspect.

[0009] This disclosure effectively avoids the problem of excessive condensation in air conditioners by shortening the operating time of the outdoor fan of the refrigerant pump air conditioner using target start-up and target shut-off values. Specifically, when the refrigerant pump air conditioner is in refrigerant pump mode, the real-time condensing pressure of the condenser in the outdoor unit of the refrigerant pump air conditioner is obtained. Based on this, the relationship between the real-time condensing pressure and the target start-up and target shut-off values ​​is monitored. When the real-time condensing pressure reaches the target start-up value, the outdoor fan is turned on; when the real-time condensing pressure reaches the target shut-off value, the outdoor fan is turned off. Based on the relationship between the real-time condensing pressure and the target start-up and shut-off values, the start-up of the outdoor fan can be delayed, and / or the outdoor fan can be turned off earlier, thereby shortening the operating time of the outdoor fan. Since the overall operating time of the outdoor fan is shortened, the forced cooling function of the refrigerant pump air conditioner is also shortened, which can, to a certain extent, avoid the problem of excessive refrigerant condensation in the condenser.

[0010] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0011] The above and other features, advantages, and aspects of the embodiments of this disclosure will become more apparent from the accompanying drawings and the following detailed description. Throughout the drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the originals and elements are not necessarily drawn to scale. In the drawings: Figure 1 This is a flowchart illustrating a control method for a refrigerant pump air conditioner according to an embodiment of this disclosure.

[0012] Figure 2 This is an example diagram illustrating the operating principle of a refrigerant pump air conditioner in refrigerant pump mode, as shown in an embodiment of the present disclosure.

[0013] Figure 3 This is a comparative example diagram showing the control method of a refrigerant pump air conditioner according to an embodiment of the present disclosure, comparing the control of the outdoor fan with the existing outdoor fan control.

[0014] Figure 4 This is a block diagram of a control device for a refrigerant pump air conditioner according to an embodiment of the present disclosure.

[0015] Figure 5 This is a schematic diagram of the structure of a refrigerant pump air conditioner according to an embodiment of the present disclosure. Detailed Implementation

[0016] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0017] It should be understood that the steps described in the method embodiments of this disclosure may be performed in different orders and / or in parallel. Furthermore, the method embodiments may include additional steps and / or omit the steps shown. The scope of this disclosure is not limited in this respect.

[0018] The term "comprising" and its variations as used herein are open-ended inclusions, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the description below.

[0019] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0020] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0021] The names of messages or information exchanged between multiple devices in the embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of such messages or information.

[0022] It is understood that before using the technical solutions disclosed in the various embodiments of this disclosure, users should be informed of the types, scope of use, and usage scenarios of the personal information involved in this disclosure in an appropriate manner in accordance with relevant laws and regulations, and user authorization should be obtained.

[0023] For example, upon receiving a user's active request, a prompt message is sent to the user to explicitly inform them that the requested operation will require the acquisition and use of the user's personal information. This allows the user to independently choose whether to provide personal information to the software or hardware, such as the electronic device, application, server, or storage medium performing the operations of this disclosed technical solution, based on the prompt message.

[0024] As an optional but non-limiting implementation, in response to a user's active request, sending a prompt message to the user can be done via a pop-up window, where the prompt message can be presented in text format. Furthermore, the pop-up window can also include a selection control allowing the user to choose "agree" or "disagree" to provide personal information to the electronic device.

[0025] It is understood that the above notification and user authorization process are merely illustrative and do not constitute a limitation on the implementation of this disclosure. Other methods that comply with relevant laws and regulations may also be applied to the implementation of this disclosure.

[0026] Meanwhile, it is understood that the data involved in this technical solution (including but not limited to the data itself, the acquisition or use of the data) shall comply with the requirements of relevant laws, regulations and related provisions.

[0027] Common cooling methods for data centers include water-cooled chilled water systems, indirect evaporative cooling units, nitrogen pump air conditioning, and cold plate liquid cooling. Among these, nitrogen pump air conditioning is widely used in cold regions. When the outdoor ambient temperature is low, nitrogen pump air conditioning can use a small-power nitrogen pump to replace the compressor as the power source to drive the refrigerant circulation, making full use of natural cold sources. It has advantages such as energy saving, low installation and maintenance costs, strong environmental adaptability, and water saving. In other words, when the outdoor ambient temperature is below the temperature threshold, the nitrogen pump air conditioning can be switched to nitrogen pump mode, that is, the compressor is shut down and a small-power nitrogen pump is used to force the refrigerant to circulate for heat exchange. This meets the cooling needs of the computer room while reducing power consumption, resulting in significant energy-saving advantages.

[0028] However, when a refrigerant pump air conditioner is operating in pure refrigerant pump mode, if the outdoor temperature is extremely low in winter, the refrigerant is very likely to over-condense in the condenser. Over-condensation will cause the condensing pressure of the condenser to drop continuously, leading to frequent low-pressure alarms from the refrigerant pump air conditioner. During this process, the refrigerant pump air conditioner may misjudge that the refrigerant is insufficient and thus shut down for protection, causing a cooling interruption. Over-condensation will also cause the refrigerant volume to shrink. If maintenance personnel do not pay enough attention in this situation, the liquid level in the receiver tank may drop excessively, and the refrigerant pump air conditioner may also judge that the refrigerant is insufficient and shut down for protection. If monitoring is inadequate or problems such as startup failure occur, the data center may be at risk of temperature rise, which may affect the stability of business operations.

[0029] To address the aforementioned issues, two solutions have been proposed: The first is to temporarily charge the refrigerant to increase the condenser's condensing pressure. However, this method can cause high-pressure alarms in refrigerant pump air conditioners during the summer, typically requiring refrigerant to be released to lower the pressure. The second solution involves directly shutting down the refrigerant pump air conditioner when the condenser's condensing pressure continues to drop, and then restarting it once the room temperature reaches a certain limit. Here, repeated charging and discharging of refrigerant introduces problems such as pipeline pressure fluctuations, refrigerant leaks, and increased costs, while repeated start-ups and shutdowns can lead to continuous cooling interruptions in the room. Therefore, both methods essentially rely on manual intervention and cannot automatically resolve these problems.

[0030] To address the aforementioned issues, this disclosure proposes a control method for a refrigerant pump air conditioner. This method, by introducing target start-up and target shutdown values ​​for the outdoor fan, can shorten the operating time of the outdoor fan, thereby effectively preventing excessive condensation. Specifically, when the refrigerant pump air conditioner is in refrigerant pump mode, the target start-up and target shutdown values ​​are obtained, along with the real-time condensing pressure of the condenser in the outdoor unit. Based on this, the relationship between the real-time condensing pressure and the target start-up and target shutdown values ​​is monitored. Based on this relationship, the outdoor fan can be delayed in starting and / or shut down earlier to shorten its operating time. Since the overall operating time of the outdoor fan is shortened, the forced cooling function of the refrigerant pump air conditioner is also shortened, thus preventing excessive condensation of the refrigerant (condensate) in the condenser to a certain extent.

[0031] Figure 1 This is a flowchart illustrating a control method for a refrigerant pump air conditioner according to an embodiment of this disclosure. This control method can be applied to refrigerant pump air conditioners with processing capacity. Furthermore, the control method can be executed by a control device for the refrigerant pump air conditioner, wherein the control device can be implemented by software and / or hardware, and the software and / or hardware can be configured within the refrigerant pump air conditioner. (Refer to...) Figure 1The control method for this refrigerant pump air conditioner may include the following steps.

[0032] In step S110, when the refrigerant pump air conditioner is in refrigerant pump mode, the target start value and target shut-off value of the outdoor fan are obtained.

[0033] Refrigerant pump air conditioners typically operate in refrigerant pump mode during winter, stopping the compressor and using the refrigerant pump to drive the refrigerant for cooling. This significantly reduces operating costs. Refrigerant pump mode is a highly efficient and energy-saving operating mode for refrigerant pump air conditioners. Its core principle is that when the outdoor ambient temperature is low, the air conditioner automatically shuts off or significantly reduces compressor operation, instead using a dedicated refrigerant pump as a power source to drive the refrigerant to circulate between the indoor evaporator and the outdoor condenser, thus fully utilizing the outdoor natural cold source for indoor cooling.

[0034] As an example, this disclosure embodiment can obtain the outdoor ambient temperature and determine whether the outdoor ambient temperature is lower than a temperature threshold. If it is determined that the outdoor ambient temperature is lower than the temperature threshold, the mode of the refrigerant pump air conditioner can be switched from compressor mode to refrigerant pump mode.

[0035] As an example, this embodiment of the disclosure can obtain the indoor heat load demand and determine whether the indoor heat load demand is lower than the preset demand. If it is determined that the indoor heat load demand is lower than the preset demand, this embodiment of the disclosure can switch the mode of the refrigerant pump air conditioner from compressor mode to refrigerant pump mode.

[0036] As an example, this embodiment of the disclosure can obtain the outdoor ambient temperature and the indoor heat load demand, and determine whether the outdoor ambient temperature is lower than a temperature threshold and whether the indoor heat load demand is lower than a preset demand. If it is determined that the outdoor ambient temperature is lower than the temperature threshold and the indoor heat load demand is lower than the preset demand, then this embodiment of the disclosure can switch the mode of the refrigerant pump air conditioner from compressor mode to refrigerant pump mode.

[0037] Here, the driving force of heat exchange is evaluated by focusing on the difference between the outdoor temperature and the refrigerant temperature. The larger the difference, the stronger the natural cooling capacity. This ensures that the refrigerant pump mode has sufficient capacity, meaning that the natural cooling source is not only available but also very strong. Switching to the operating mode at this time can, to a certain extent, ensure the efficient and stable operation of the refrigerant pump system.

[0038] This embodiment of the disclosure can determine whether to switch from compressor mode to refrigerant pump mode using any of the above methods, or it can combine multiple of the above methods to determine whether to switch from compressor mode to refrigerant pump mode. The specific method used for judgment is not explicitly limited here, and can be selected according to the actual situation.

[0039] Please refer to Figure 2 When a refrigerant pump air conditioner operates in refrigerant pump mode, its main components may include a condenser 210, an outdoor fan 220, a refrigerant pump 230, an electronic expansion valve 240, and an evaporator 250. The outdoor fan 220 can be installed on the outdoor unit and can be directly opposite the fin array of the condenser 210. The first end of the refrigerant pump 230 can be connected to the condenser 210, and the second end of the refrigerant pump 230 can be connected to the first end of the electronic expansion valve 240. The second end of the electronic expansion valve 240 can be connected to the evaporator 250.

[0040] The condenser 210, located in the outdoor unit, is primarily used to cool and condense the high-temperature, low-pressure refrigerant gas into a low-temperature, low-pressure liquid. In refrigerant pump mode, the condenser 210 can utilize the low-temperature outdoor air to cool the refrigerant. The outdoor fan 220 drives airflow across the fins of the condenser 210, enhancing heat exchange between the condenser 210 and the outdoor air. In refrigerant pump mode, the outdoor fan 220 can adjust the airflow as needed to control the condensing pressure of the condenser. The refrigerant pump 230 can be a liquid pump, which can propel liquid refrigerant through the pipeline in refrigerant pump mode. Unlike the compressor, the refrigerant pump 230 does not compress gas; it is mainly used to increase the pressure of the liquid, overcome pipeline resistance, and reduce energy consumption. The electronic expansion valve 240 is located between the condenser 210 and the evaporator 250. It can control the flow of refrigerant entering the evaporator by changing its opening degree, and also has the function of reducing pressure and throttling, so that the low-temperature, high-pressure liquid refrigerant becomes a low-temperature, low-pressure two-phase mixture. The evaporator 250 is located in the indoor unit. It is mainly used to absorb the heat of the indoor air with the low-temperature, low-pressure liquid refrigerant and evaporate it into gas, thereby cooling the indoor air.

[0041] As an optional approach, when the refrigerant pump air conditioner is detected to be in refrigerant pump mode, embodiments of this disclosure can obtain target start-up values ​​and target shutdown values ​​for the outdoor fan. Here, the pressure range formed by the target start-up value and the target shutdown value can be referred to as the pressure setting range, which is smaller than the default pressure setting range. The default pressure setting range can be composed of an initial start-up value and an initial shutdown value. It is evident that the first difference between the target start-up value and the target shutdown value in embodiments of this disclosure is smaller than the second difference between the initial start-up value and the initial shutdown value; therefore, the start-up time of the outdoor fan can be shortened by using the target start-up value and the target shutdown value.

[0042] In this embodiment of the disclosure, the initial start-up value can be a pre-set first pressure value for starting the outdoor fan, which can be the condensing pressure setting value of the condenser. Optionally, the initial start-up value can also be the initial pressure value when the refrigerant enters the condenser. Here, the first pressure value can be referred to as the default start-up value.

[0043] The initial shut-off value can be a pre-set second pressure value used to shut down the outdoor fan. Similar to the first pressure value, the second pressure value can also be the condensing pressure setting value of the condenser. Here, the second pressure value can be called the default shut-off value, which can be lower than the default open value.

[0044] In this embodiment of the disclosure, the target start-up value can be equal to the initial start-up value. The initial start-up value can be the initial pressure value when the refrigerant enters the condenser, or it can be a first pressure value (default start-up value) preset for starting the outdoor fan. The first pressure value can be a fixed pressure value for defaulting to start the outdoor fan, and the first pressure value can be less than the initial pressure value of the refrigerant entering the condenser.

[0045] Optionally, the target start-up value can be less than the initial start-up value. That is, the target start-up value can be a target start-up threshold obtained based on the actual situation and less than the initial start-up value. The target start-up threshold can be the outdoor fan start-up value obtained based on the actual environment of the refrigerant pump air conditioner. The target start-up threshold can be less than the first pressure value.

[0046] The target shutdown value can be equal to the initial shutdown value. Optionally, the target shutdown value can be greater than the initial shutdown value, that is, it can be a target shutdown threshold obtained based on the actual situation and greater than the initial shutdown value. The target shutdown threshold can be the outdoor fan shutdown value obtained based on the actual environment of the refrigerant pump air conditioner, and this target shutdown threshold can be greater than the second pressure value.

[0047] In this embodiment of the disclosure, the target start-up value (target start-up threshold) and the target shut-off value (target shut-off threshold) can be pressure thresholds obtained based on empirical values, or they can be pressure thresholds obtained in real time based on the environment in which the refrigerant pump air conditioner is located.

[0048] For example, embodiments of this disclosure can obtain the outdoor ambient temperature of the refrigerant pump air conditioner, and based on this, determine the corresponding target start-up value (target start-up threshold) and target shutdown value (target shutdown threshold) according to the outdoor ambient temperature. There is a positive correlation between the outdoor ambient temperature and the target start-up value; for example, the lower the outdoor ambient temperature, the lower the target start-up value. Conversely, the higher the outdoor ambient temperature, the higher the target start-up value. Furthermore, there is a negative correlation between the outdoor ambient temperature and the target shutdown value; that is, the lower the outdoor ambient temperature, the higher the target shutdown value, and vice versa.

[0049] In other words, there is a corresponding relationship between the outdoor ambient temperature and the target activation and target deactivation values. This embodiment of the disclosure can obtain the target activation and target deactivation values ​​corresponding to the outdoor ambient temperature by looking up a map table. Here, the target activation value can be the aforementioned target activation threshold, and the target deactivation value can be the aforementioned target deactivation threshold.

[0050] For example, the target startup value can be less than the initial startup value, and the target shutdown value can be equal to the initial shutdown value; the target startup value can be equal to the initial startup value, and the target shutdown value can be greater than the initial shutdown value.

[0051] It should be noted that, when the refrigerant pump air conditioner is detected to be in refrigerant pump mode, this embodiment can also obtain the outdoor ambient temperature of the refrigerant pump air conditioner, and based on this, determine whether the outdoor ambient temperature is lower than a preset temperature. If it is determined that the outdoor ambient temperature is lower than the preset temperature, this embodiment can obtain the target start value and target shutdown value of the outdoor fan. That is to say, when the refrigerant pump air conditioner is in refrigerant pump mode, if the refrigerant pump air conditioner is in an extreme low temperature condition, the execution of this embodiment can be triggered. This not only ensures accurate control of the outdoor fan's start and stop, but also avoids affecting the heat dissipation of the refrigerant pump air conditioner under normal operating conditions, that is, ensures the heat dissipation capacity of the outdoor fan under normal operating conditions.

[0052] In step S120, the real-time condensing pressure of the condenser is obtained.

[0053] In this embodiment of the disclosure, the real-time condensing pressure can be the pressure of the refrigerant (condenser) after it enters the condenser from the compressor. As the refrigerant enters the condenser, its real-time condensing pressure continuously decreases. That is, the real-time condensing pressure can be the initial pressure of the refrigerant after it enters the condenser from the compressor, or it can be the pressure after a certain period of time in the condenser. The specific pressure value at which stage is referred to is not explicitly defined here.

[0054] In step S130, when the real-time condensing pressure reaches the target start-up value, the external fan is turned on.

[0055] In step S140, when the real-time condensing pressure reaches the target start-up value, the external fan is turned on.

[0056] As an optional approach, after obtaining the target start-up value, target stop-down value, and real-time condensing pressure, this embodiment of the present disclosure can control the start-up and stop-down of the external fan based on the relationship between the real-time condensing pressure and the target start-up value and target stop-down value. Since the first difference between the target start-up value and the target stop-down value in this embodiment of the present disclosure is less than the second difference between the initial start-up value and the initial stop-down value, the start-up time of the external fan can be significantly shortened.

[0057] In one specific implementation, the target start-up value can be less than the initial start-up value, and the target shutdown value can be equal to the initial shutdown value. When the real-time condensing pressure is at the initial start-up value, this embodiment of the present disclosure can keep the outdoor fan off. Then, when it is determined that the real-time condensing pressure has decreased to the target start-up value, the refrigerant pump air conditioner can turn on the outdoor fan. Based on this, this embodiment of the present disclosure can monitor whether the real-time condensing pressure has decreased to the initial shutdown value. If it is determined that the real-time condensing pressure of the condenser has decreased to the initial shutdown value, this embodiment of the present disclosure can turn off the outdoor fan.

[0058] As described above, the initial start-up value can be either the initial pressure value or the first pressure value (the default start-up value). That is, the initial start-up value can be the first pressure value, or it can be the initial pressure value of the condenser when the refrigerant enters the condenser from the evaporator. In this embodiment, when the real-time condensing pressure is detected to be the initial start-up value, the outdoor fan can be kept in the off state, i.e., it will not be switched from the off state to the on state.

[0059] As an example, when refrigerant is detected entering the condenser, embodiments of this disclosure may keep the outdoor fan off, and then turn it on when it is determined that the real-time condensing pressure has dropped to the target start-up value.

[0060] As another example, when refrigerant is detected entering the condenser, this embodiment of the present disclosure can keep the outdoor fan off. Afterward, the real-time condensing pressure will continuously decrease. When the real-time condensing pressure is detected to have dropped to a first pressure value (default start value), this embodiment of the present disclosure can keep the outdoor fan off, i.e., not perform the on / off state switching operation of the outdoor fan. Then, when it is determined that the real-time condensing pressure has dropped to a target start value, the outdoor fan is turned on. Here, the first pressure value can be a pressure threshold for monitoring whether the outdoor fan is started in related technologies. The target start value is less than the first pressure value, and the first pressure value can be less than the initial pressure value.

[0061] After the outdoor fan is turned on, the real-time condensing pressure will continuously decrease. When the real-time condensing pressure is detected to have dropped to the initial shutdown value, the outdoor fan can be turned off in this embodiment of the present disclosure, that is, the state of the outdoor fan is switched from the on state to the off state.

[0062] As another specific implementation, the target start-up value can be equal to the initial start-up value, and the target shut-off value can be greater than the initial shut-off value. When the real-time condensing pressure is equal to the initial start-up value, this embodiment of the present disclosure can turn on the external fan, that is, switch the external fan from the off state to the on state / on state. Based on this, this embodiment of the present disclosure can monitor whether the real-time condensing pressure has dropped to the target shut-off value. If it is determined that the real-time condensing pressure of the condenser has dropped to the target shut-off value, this embodiment of the present disclosure can turn off the external fan.

[0063] This embodiment of the disclosure can switch the outdoor fan from the off state to the on state when the real-time condensing pressure is detected to be at the initial start-up value. In other words, when the real-time condensing pressure reaches the initial start-up value, this embodiment of the disclosure can turn on the outdoor fan.

[0064] As an example, when refrigerant is detected entering the condenser, this embodiment of the disclosure can directly turn on the outdoor fan, that is, switch the outdoor fan from the off state to the on state. Here, the initial start-up value can be the initial pressure value.

[0065] As another example, when refrigerant is detected entering the condenser, this embodiment of the present disclosure can keep the outdoor fan off. Afterward, the real-time condensing pressure will continuously decrease. When it drops to the initial start-up value, this embodiment of the present disclosure can turn on the outdoor fan, switching it from the off state to the on state. Here, the initial start-up value can be a first pressure value, which can be less than the initial pressure value.

[0066] After the outdoor fan is turned on, the real-time condensing pressure will continuously decrease. When the real-time condensing pressure drops to the target shut-off value, the embodiment of this disclosure can shut down the outdoor fan, that is, switch the state of the outdoor fan from the on state to the off state. Here, the target shut-off value can be greater than the initial shut-off value of the outdoor fan, which can be a default pressure threshold (second pressure value) for monitoring the shutdown of the outdoor fan in related technologies.

[0067] As another specific implementation, the target start-up value can be less than the initial start-up value, and the target shutdown value can be greater than the initial shutdown value. When the real-time condensing pressure is at the initial start-up value, this embodiment of the present disclosure can keep the outdoor fan in the off state, that is, not perform the on / off state switching operation. Subsequently, the real-time condensing pressure will continuously decrease with the natural heat dissipation pressure. When it is determined that the real-time condensing pressure of the condenser has decreased to the target start-up value, this embodiment of the present disclosure can turn on the outdoor fan, that is, switch the outdoor fan from the off state to the on / off state. Based on this, this embodiment of the present disclosure can monitor whether the real-time condensing pressure has decreased to the target shutdown value. If it is determined that the real-time condensing pressure of the condenser has decreased to the target shutdown value, this embodiment of the present disclosure can turn off the outdoor fan.

[0068] To better understand the relationship between initial startup values, target startup values, initial shutdown values, and target shutdown values, the embodiments of this disclosure provide, as follows: Figure 3 The example diagram shown is as follows. Figure 3This is a pressure-enthalpy diagram of the refrigeration cycle when an air conditioner with a refrigerant pump is running in pure refrigerant pump mode. The process from B to C in the diagram represents the refrigerant in the evaporator. During this stage, the refrigerant exists in both the gas-liquid two-phase region and the gas phase. Through continuous evaporation, reaching point C, the refrigerant switches to the gas phase, becoming gaseous. The process from C to F represents the refrigerant in the condenser. During this stage, the refrigerant changes from a gaseous state to a liquid state, continuously releasing heat to transfer heat from the indoor environment to the outdoor environment. The process from F to A represents the stage after the refrigerant enters the refrigerant pump. In this stage, the refrigerant pump increases the refrigerant pressure to provide power for the refrigerant to flow through the pipes. The final stage from A to B represents the refrigerant passing through the electronic expansion valve. This process reduces the refrigerant pressure, and the electronic expansion valve allows for adjustment of the refrigerant flow rate. Here, the refrigerant flow rate can be flexibly adjusted according to the required indoor heat. If the required indoor heat is low, the flow rate is reduced through the electronic expansion valve.

[0069] in addition, Figure 3 In this context, P1 can be the condensing pressure when the refrigerant enters the condenser from the evaporator, i.e., P1 can be the initial start-up value. Related technologies allow the outdoor fan to be turned on directly when the real-time condensing pressure is at this P1 value. P1 can also be the first pressure value, and the outdoor fan can be turned on when the real-time condensing pressure of the condenser drops to this first pressure value. P2 can be the initial shutdown value, and related technologies allow the outdoor fan to be turned off when the real-time condensing pressure is at this P2 value.

[0070] In other words, C-E' can be the thermodynamic state change process of the refrigerant in the condenser when the outdoor fan is running at the normal start and stop pressure. That is, when the real-time condensing pressure reaches P1 (point C), the outdoor fan starts, and then the refrigerant undergoes forced heat exchange with the outside air. At this time, the real-time condensing pressure can drop to P2 (point E') at a relatively fast speed, and then the outdoor fan is turned off. The refrigerant pressure then drops slowly due to natural heat dissipation, and finally reaches the condenser outlet (point F'), where the real-time condensing pressure is P3.

[0071] Optionally, CE can be an example of a process that reduces the starting pressure of the outdoor fan and increases its stopping pressure. Specifically, it represents the thermodynamic state change of the refrigerant after the outdoor fan starts late and stops early. When the refrigerant enters the condenser (point C), the pressure is P1, and the outdoor fan does not start but instead undergoes natural heat dissipation. When the real-time condensing pressure slowly decreases to P4 (point D), the outdoor fan starts, and then the refrigerant undergoes forced heat exchange with the outside air. At this point, the condensing pressure drops rapidly to P5 (point E), after which the outdoor fan is turned off. Based on this, the refrigerant pressure will slowly decrease due to natural heat dissipation, eventually reaching the condenser outlet (point F), where the real-time condensing pressure is P6.

[0072] Since the stronger the heat exchange between the refrigerant and the outside air, the faster the condensation rate, and the faster the condensation pressure of the condenser drops, the embodiments of this disclosure can delay the start-up and stop the outdoor fan by lowering the condensation pressure setting value when the outdoor fan starts and increasing the condensation pressure setting value when the outdoor fan stops. This reduces forced heat dissipation and prolongs natural heat dissipation, thereby slowing down the rate of condensation pressure drop and avoiding frequent low-pressure alarms in the system.

[0073] Through the above control, the outdoor fan can be started late and stopped early. Since this control can reduce forced heat dissipation, it can slow down the drop in refrigerant condensing pressure. That is, the minimum pressure P6 in the condenser is significantly lower than the minimum pressure P3 under normal conditions. It can be seen that the embodiments of this disclosure can effectively solve the problem of frequent low-pressure alarms in refrigerant pump air conditioners.

[0074] As described above, the target start-up value and target shut-off value can be obtained based on the outdoor ambient temperature. That is, different outdoor ambient temperatures will result in different target start-up and target shut-off values. Optionally, the target start-up value can also be determined based on the refrigerant's state. In other words, this embodiment can monitor the refrigerant's state, and when it detects that the refrigerant has switched from a gaseous state (gas phase region) to a gas-liquid mixed state (gas-liquid two-phase region), the pressure corresponding to this transition point can be used as the target start-up value. In other words, this embodiment can activate the outdoor fan when it detects that the refrigerant has switched from the gaseous phase region to the gas-liquid two-phase region.

[0075] The root cause of excessive refrigerant condensation and low pressure is usually excessive heat exchange with the outside air. The forced cooling effect created by the outdoor fan of a refrigerant pump air conditioner, which drives the flow of outside air, contributes the most to refrigerant cooling. Since the outdoor fan is generally controlled by condensing pressure, this embodiment can control the start and stop of the outdoor fan by selecting appropriate condensing pressure setpoints (target start value and target stop value). This shortens the outdoor fan's operating time, thereby reducing forced cooling and prolonging natural cooling, thus preventing excessive refrigerant condensation. This embodiment, from the perspective of automatic outdoor fan control, maintains the condensing pressure within a safe and reasonable range by rationally combining natural and forced cooling times, rather than repeatedly relying on manual intervention. This has significant advantages in enhancing infrastructure operation and maintenance stability and reducing operating costs.

[0076] As an alternative approach, after turning on the outdoor fan, this embodiment of the disclosure can obtain the outdoor ambient temperature of the refrigerant pump air conditioner. Based on this, the rotational speed of the outdoor fan corresponding to that outdoor ambient temperature is determined, and the outdoor fan is controlled to operate at that speed. The outdoor ambient temperature and the outdoor fan rotational speed are positively correlated. That is, the lower the outdoor ambient temperature, the lower the outdoor fan rotational speed. Conversely, the higher the outdoor ambient temperature, the higher the outdoor fan rotational speed. For example, when the outdoor ambient temperature is -10℃, the outdoor fan frequency can be 50%; when the outdoor ambient temperature is -15℃, the outdoor fan frequency can be 40%; and when the outdoor ambient temperature is -30℃, the outdoor fan frequency can be 30%. It is evident that the lower the outdoor ambient temperature, the lower the corresponding outdoor fan rotational speed can be, thus avoiding low-pressure problems caused by excessively rapid heat dissipation.

[0077] Optionally, when the outdoor fan is on, this embodiment of the present disclosure can obtain the rate of decrease in the condensing pressure of the refrigerant in the condenser and determine whether the rate of decrease is greater than a preset rate. If it is determined that the rate of decrease in the condensing pressure is greater than the preset rate, this embodiment of the present disclosure can adjust the rotational speed of the outdoor fan, such as adjusting the rotational speed of the outdoor fan based on the outdoor ambient temperature, to further avoid the problem of excessive condensation of the refrigerant. Here, the rotational speed of the outdoor fan can be adjusted based on the rate of decrease in the condensing pressure; the faster the rate of decrease in the condensing pressure, the lower the corresponding rotational speed of the outdoor fan.

[0078] Optionally, when the external fan switches from the on state to the off state and dissipates heat through the natural heat dissipation function for a preset time, the present invention can determine the real-time condensing pressure of the refrigerant at that moment, and determine whether the real-time condensing pressure at this moment is lower than the set pressure value. If it is lower than the set pressure value, the present invention can activate the auxiliary electric heating function to prevent the refrigerant from excessively condensing.

[0079] In summary, by selecting appropriate start / stop setpoints (target start value and target stop value) for the outdoor fan of the refrigerant pump air conditioner, this embodiment of the present disclosure can ensure that the outdoor fan starts late and / or stops early. This can reduce forced heat dissipation and prolong natural heat dissipation to a certain extent, thereby avoiding the problem of excessively low condensing pressure in the condenser due to excessive refrigerant condensation. For example, this embodiment of the present disclosure can lower the condensing pressure setpoint for starting the outdoor fan to obtain the target start value, and / or can increase the condensing pressure setpoint for stopping the outdoor fan to obtain the target stop value. That is, controlling the outdoor fan to start late and / or stop early weakens the heat exchange between the refrigerant and the outside air, thereby slowing down the drop in condensing pressure. This can solve the problem of frequent low-pressure alarms in refrigerant pump air conditioners and, to a certain extent, effectively avoid the risk of the unit misjudging and shutting down due to low-pressure alarms.

[0080] This disclosure achieves delayed start-up and earlier shutdown of the outdoor fan in refrigerant pump air conditioners by lowering the outdoor fan start-up condensing pressure setpoint and / or increasing the outdoor fan shutdown condensing pressure setpoint. This effectively reduces refrigerant heat dissipation and slows down the rate of condensing pressure drop, thus resolving the problem of frequent low-pressure alarms in winter and eliminating the risk of the unit misjudging low-pressure protection and shutting down. Furthermore, charging refrigerant in winter and releasing it in summer are temporary manual emergency measures. This disclosure, by setting reasonable outdoor fan start-up and shutdown condensing pressure values, can, to some extent, avoid excessive refrigerant condensation, thereby resolving issues such as pipeline pressure fluctuations, refrigerant leakage, and increased operating costs associated with manual charging and releasing. Moreover, shutting down the air conditioner after the condensing pressure drops too low and restarting it after the pressure recovers is essentially a temporary emergency measure. This disclosure effectively solves the problems of interrupted cooling in the computer room and increased risk of temperature rise associated with manual start-up and shutdown.

[0081] Based on the same inventive concept, this disclosure also provides a control device for a refrigerant pump air conditioner. Figure 4 This is a block diagram illustrating a control device 400 for a refrigerant pump air conditioner according to an exemplary embodiment, such as... Figure 4 As shown, the control device 400 of the refrigerant pump air conditioner may include a first acquisition module 410, a second acquisition module 420, an activation module 430, and a deactivation module 440.

[0082] The first acquisition module 410 is configured to acquire a target start value and a target stop value of the outdoor fan when the refrigerant pump air conditioner is in refrigerant pump mode, wherein a first difference between the target start value and the target stop value is less than a second difference between the initial start value and the initial stop value; The second acquisition module 420 is configured to acquire the real-time condensing pressure of the condenser; The activation module 430 is configured to activate the external fan when the real-time condensing pressure reaches the target activation value; The shutdown module 440 is configured to shut down the external fan when the real-time condensing pressure reaches the target shutdown value.

[0083] In some implementations, the target startup value is less than the initial startup value, and the target shutdown value is equal to the initial shutdown value.

[0084] In some implementations, the target startup value is equal to the initial startup value, and the target shutdown value is greater than the initial shutdown value.

[0085] In some implementations, the target startup value is less than the initial startup value, and the target shutdown value is greater than the initial shutdown value.

[0086] In some embodiments, the first acquisition module 410 may also be configured to acquire the outdoor ambient temperature of the refrigerant pump air conditioner; determine the target start-up value and the target shut-off value corresponding to the outdoor ambient temperature, wherein the outdoor ambient temperature is positively correlated with the target start-up value and negatively correlated with the target shut-off value.

[0087] In some embodiments, the activation module 430 may also be configured to acquire the outdoor ambient temperature of the refrigerant pump air conditioner; determine the rotational speed of the outdoor fan corresponding to the outdoor ambient temperature; and control the outdoor fan to operate based on the rotational speed, wherein the outdoor ambient temperature is positively correlated with the rotational speed.

[0088] In some embodiments, the first acquisition module 410 may also be configured to acquire the outdoor ambient temperature of the refrigerant pump air conditioner when the refrigerant pump air conditioner is in refrigerant pump mode; and acquire the target start value and the target shut-off value when the outdoor ambient temperature is lower than a preset temperature.

[0089] In some embodiments, the initial start-up value is a preset first pressure value for starting the outdoor fan, or the initial pressure value when the refrigerant enters the condenser; the initial shut-off value is a preset second pressure value for shutting off the outdoor fan, and the first pressure value and the second pressure value are the condensing pressure setting values ​​of the condenser.

[0090] This embodiment of the invention effectively avoids the problem of excessive condensation in air conditioners by shortening the operating time of the outdoor fan of the refrigerant pump air conditioner using target start-up and target stop-down values. Specifically, when the refrigerant pump air conditioner is in refrigerant pump mode, the real-time condensing pressure of the condenser in the outdoor unit of the refrigerant pump air conditioner is obtained. Based on this, the relationship between the real-time condensing pressure and the target start-up and target stop-down values ​​is monitored. When the real-time condensing pressure reaches the target start-up value, the outdoor fan is turned on; when the real-time condensing pressure reaches the target stop-down value, the outdoor fan is turned off. Based on the relationship between the real-time condensing pressure and the target start-up and stop-down values, the start-up of the outdoor fan can be delayed, and / or the outdoor fan can be turned off earlier to shorten the operating time of the outdoor fan. Since the overall operating time of the outdoor fan is shortened, the forced cooling function of the refrigerant pump air conditioner is also shortened, which can, to a certain extent, avoid the problem of excessive condensation of refrigerant in the condenser.

[0091] The following is for reference. Figure 5The diagram illustrates a structural schematic suitable for implementing the refrigerant pump air conditioner 500 according to embodiments of the present disclosure. The terminal devices in embodiments of the present disclosure may include, but are not limited to, mobile terminals such as mobile phones, laptops, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), in-vehicle terminals (e.g., in-vehicle navigation terminals), and fixed terminals such as digital TVs and desktop computers. Figure 5 The illustrated refrigerant pump air conditioner is merely an example and should not be construed as limiting the functionality and scope of use of the embodiments disclosed herein.

[0092] like Figure 5 As shown, the refrigerant pump air conditioner 500 may include a processing device (e.g., a central processing unit, a graphics processor, etc.) 501, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 502 or a program loaded from a storage device 508 into a random access memory (RAM) 503. The RAM 503 also stores various programs and data required for the operation of the refrigerant pump air conditioner 500. The processing device 501, ROM 502, and RAM 503 are interconnected via a bus 504. An input / output (I / O) interface 505 is also connected to the bus 504.

[0093] Typically, the following devices can be connected to I / O interface 505: input devices 506 including, for example, touchscreens, touchpads, keyboards, mice, cameras, microphones, accelerometers, gyroscopes, etc.; output devices 507 including, for example, liquid crystal displays (LCDs), speakers, vibrators, etc.; storage devices 508 including, for example, magnetic tapes, hard disks, etc.; and communication devices 509. Communication device 509 allows the refrigerant pump air conditioner 500 to communicate wirelessly or wiredly with other devices to exchange data. Although Figure 5 A refrigerant pump air conditioner 500 with various devices is shown; however, it should be understood that implementation or possession of all the devices shown is not required. More or fewer devices may be implemented or possessed alternatively.

[0094] In particular, according to embodiments of this disclosure, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of this disclosure include a computer program product comprising a computer program carried on a non-transitory computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via a communication device 509, or installed from a storage device 508, or installed from a ROM 502. When the computer program is executed by the processing device 501, it performs the functions defined in the methods of embodiments of this disclosure.

[0095] It should be noted that the computer-readable medium described in this disclosure can be a computer-readable signal medium or a computer-readable storage medium, or any combination thereof. A computer-readable storage medium can be, for example,—but not limited to—an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of a computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this disclosure, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. In this disclosure, a computer-readable signal medium can include a data signal propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium can be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device. The program code contained on the computer-readable medium can be transmitted using any suitable medium, including but not limited to: wires, optical fibers, RF (radio frequency), etc., or any suitable combination thereof.

[0096] In some implementations, the refrigerant pump air conditioner can communicate using any currently known or future-developed network protocol such as HTTP (Hypertext Transfer Protocol) and can interconnect with digital data communication (e.g., communication networks) of any form or medium. Examples of communication networks include local area networks (“LANs”), wide area networks (“WANs”), the Internet (e.g., the Internet), and end-to-end networks (e.g., ad hoc end-to-end networks), as well as any currently known or future-developed networks.

[0097] The aforementioned computer-readable medium may be included in the aforementioned refrigerant pump air conditioner; or it may exist independently and not installed in the refrigerant pump air conditioner.

[0098] The aforementioned computer-readable medium carries one or more programs that, when executed by the refrigerant pump air conditioner, cause the refrigerant pump air conditioner to: When the refrigerant pump air conditioner is in refrigerant pump mode, the target start value and target stop value of the outdoor fan are obtained. The first difference between the target start value and the target stop value is less than the second difference between the initial start value and the initial stop value. Obtain the real-time condensing pressure of the condenser; When the real-time condensing pressure reaches the target start-up value, the outdoor fan will be turned on. When the real-time condensing pressure reaches the target shut-off value, the outdoor fan is turned off.

[0099] Computer program code for performing the operations of this disclosure can be written in one or more programming languages ​​or a combination thereof, including but not limited to object-oriented programming languages ​​such as Java, Smalltalk, and C++, as well as conventional procedural programming languages ​​such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0100] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0101] The modules described in the embodiments of this disclosure can be implemented in software or hardware. The names of the modules are not, in some cases, intended to limit the functionality of the module itself.

[0102] The functions described above in this document can be performed at least in part by one or more hardware logic components. For example, exemplary types of hardware logic components that can be used, without limitation, include: field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), system-on-a-chip (SoCs), complex programmable logic devices (CPLDs), and so on.

[0103] In the context of this disclosure, a machine-readable medium can be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, apparatus, or device. A machine-readable medium can be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium can be, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0104] The above description is merely a preferred embodiment of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features disclosed in this disclosure that have similar functions.

[0105] Furthermore, while the operations are described in a specific order, this should not be construed as requiring these operations to be performed in the specific order shown or in a sequential order. In certain environments, multitasking and parallel processing may be advantageous. Similarly, while several specific implementation details are included in the above discussion, these should not be construed as limiting the scope of this disclosure. Certain features described in the context of individual embodiments may also be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment may also be implemented individually or in any suitable sub-combination in multiple embodiments.

[0106] Although the subject matter has been described using language specific to structural features and / or methodological logic, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. Rather, the specific features and actions described above are merely illustrative forms of implementing the claims. Regarding the apparatus in the above embodiments, the specific manner in which the various modules perform their operations has been described in detail in the embodiments relating to the method, and will not be elaborated upon here.

Claims

1. A control method of a fluorine pump air conditioner, characterized by, The fluorine pump air conditioner comprises a condenser and an external fan, and the method comprises: In the case that the fluorine pump air conditioner is in a fluorine pump mode, a target starting value and a target closing value of the external fan are acquired, a first difference between the target starting value and the target closing value is smaller than a second difference between an initial starting value and an initial closing value; An instant condensing pressure of the condenser is acquired; When the instant condensing pressure reaches the target starting value, the external fan is started; When the instant condensing pressure reaches the target closing value, the external fan is closed.

2. The control method of a fluoro-pump air conditioner according to claim 1, characterized in that, The target starting value is smaller than the initial starting value, and the target closing value is equal to the initial closing value.

3. The control method of a fluoro-pump air conditioner according to claim 1, characterized by, The target starting value is equal to the initial starting value, and the target closing value is greater than the initial closing value.

4. The control method of a fluoro-pump air conditioner according to claim 1, characterized in that, The target starting value is smaller than the initial starting value, and the target closing value is greater than the initial closing value.

5. The control method of a fluoro-pump air conditioner according to claim 4, characterized in that, The acquisition of the target starting value and the target closing value of the external fan comprises: An outdoor environment temperature of the fluorine pump air conditioner is acquired; The target starting value and the target closing value corresponding to the outdoor environment temperature are determined, the outdoor environment temperature is positively correlated with the target starting value, and the outdoor environment temperature is negatively correlated with the target closing value.

6. The control method of a fluoro-pump air conditioner according to any one of claims 2 to 5, characterized in that, After the starting of the external fan, the following steps are included: An outdoor environment temperature of the fluorine pump air conditioner is acquired; A rotating speed of the external fan corresponding to the outdoor environment temperature is determined, and the external fan is controlled to operate based on the rotating speed, the outdoor environment temperature is positively correlated with the rotating speed.

7. The control method of a fluorine pump air conditioner according to any one of claims 1 to 5, characterized by, The acquisition of the target starting value and the target closing value of the external fan in the case that the fluorine pump air conditioner is in a fluorine pump mode comprises: In the case that the fluorine pump air conditioner is in a fluorine pump mode, an outdoor environment temperature of the fluorine pump air conditioner is acquired; When the outdoor environment temperature is lower than a preset temperature, the target starting value and the target closing value are acquired.

8. The control method of the fluorine pump air conditioner according to any one of claims 1 to 5, characterized in that, The initial starting value is a first pressure value preset for starting the external fan, or is an initial pressure value when refrigerant enters the condenser; The initial closing value is a second pressure value preset for closing the external fan, and the first pressure value and the second pressure value are condensing pressure setting values of the condenser.

9. A control device for a fluorine pump air conditioner, characterized by comprising: The device comprises: A first acquisition module configured to acquire a target starting value and a target closing value of the external fan in the case that the fluorine pump air conditioner is in a fluorine pump mode, a first difference between the target starting value and the target closing value being smaller than a second difference between an initial starting value and an initial closing value; A second acquisition module configured to acquire an instant condensing pressure of the condenser; A starting module configured to start the external fan when the instant condensing pressure reaches the target starting value; A closing module configured to close the external fan when the instant condensing pressure reaches the target closing value.

10. A computer readable medium having stored thereon a computer program, characterized in that, The computer program is executed by a processing device to implement the steps of the method according to any one of claims 1 to 8.

11. A fluorine pump air conditioner characterized by comprising: Comprise: A storage device having a computer program stored thereon; processing means for executing the computer program in the storage means to implement the steps of the method of any of claims 1-8.

12. A computer program product comprising a computer program, characterized in that, The computer program which, when executed by the processor, carries out the steps of the method of any of claims 1-8.

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